SIST EN 303 347-3 V2.1.1:2021

ETSI EN 303 347-3 V2.1.1 (2021-06)






HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 3: Meteorological Radar Sensor operating
in the frequency band 9 300 MHz to 9 500 MHz (X band)

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2 ETSI EN 303 347-3 V2.1.1 (2021-06)

Reference
DEN/ERM-TGAERO-42-3
Keywords
harmonised standard, radar, radio

ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
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If you find errors in the present document, please send your comment to one of the following services:
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Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2021.
All rights reserved.

ETSI

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3 ETSI EN 303 347-3 V2.1.1 (2021-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter requirements . 11
4.2.1.1 Frequency Tolerance . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter output power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 12
4.2.1.2.3 Conformance . 12
4.2.1.3 Measured B Bandwidth . 12
-40
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-Band emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 13
4.2.1.4.3 Conformance . 14
4.2.1.5 Spurious emissions . 14
4.2.1.5.1 Definition. 14
4.2.1.5.2 Limits . 15
4.2.1.5.3 Conformance . 15
4.2.1.6 Stand-by Mode emissions . 16
4.2.1.6.1 Definition. 16
4.2.1.6.2 Limits . 16
4.2.1.6.3 Conformance . 16
4.2.2 Receiver Requirements . 16
4.2.2.1 Noise Figure . 16
4.2.2.1.1 Definition. 16
4.2.2.1.2 Limits . 16
4.2.2.1.3 Conformance . 16
4.2.2.2 Receiver Selectivity . 16
4.2.2.2.1 Definition. 16
4.2.2.2.2 Limits . 16
4.2.2.2.3 Conformance . 18
4.2.2.3 Receiver Compression Level . 18
4.2.2.3.1 Definition. 18
4.2.2.3.2 Limits . 19
4.2.2.3.3 Conformance . 19
5 Testing for compliance with technical requirements . 19
5.1 General requirements . 19
ETSI

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4 ETSI EN 303 347-3 V2.1.1 (2021-06)
5.2 Environmental conditions for testing . 20
5.2.1 Test Conditions . 20
5.2.2 Normal temperature and humidity . 20
5.2.3 Normal test power supply . 20
5.3 Radio test suites . 20
5.3.1 Transmitter test specification . 20
5.3.1.1 Frequency Tolerance . 20
5.3.1.2 Transmitter Power . 21
5.3.1.3 Measured B Bandwidth . 21
-40
5.3.1.4 Out-of-Band emissions . 21
5.3.1.5 Spurious emissions . 23
5.3.1.6 Stand-by Mode Emissions . 25
5.3.2 Receiver Test specification . 25
5.3.2.1 Noise Figure . 25
5.3.2.2 Receiver Selectivity . 26
5.3.2.2.1 General . 26
5.3.2.2.2 Receiver unwanted Signal Selectivity . 26
5.3.2.3 Receiver Compression Level . 27
5.3.2.3.1 General . 27
5.3.2.3.2 Receiver Compression Level . 27
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (normative): Calculation of the -40 dB Bandwidth . 29
Annex C (normative): Operating frequency and transmitter power measurement setup . 31
Annex D (normative): Spurious and OoB emission measurement setup . 32
Annex E (normative): Receiver selectivity and compression level measurement setup . 33
Annex F (informative): Maximum Measurement Uncertainty . 34
Annex G (informative): WR90/WG16 waveguide characteristics . 35
Annex H (informative): Checklist . 37
History . 39


ETSI

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5 ETSI EN 303 347-3 V2.1.1 (2021-06)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering meteorological radar systems for different frequency
bands, as identified below:
Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz (S band)";
Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";
Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz
(X band)".

ETSI

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6 ETSI EN 303 347-3 V2.1.1 (2021-06)
National transposition dates
Date of adoption of this EN: 31 May 2021
Date of latest announcement of this EN (doa): 31 August 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2022
Date of withdrawal of any conflicting National Standard (dow): 28 February 2023

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

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7 ETSI EN 303 347-3 V2.1.1 (2021-06)
1 Scope
The present document specifies technical characteristics and methods of measurements for X band meteorological radar
systems intended for the surveillance and classification of hydrometeors with the following characteristics:
• Operating in the following frequency range:
- 9 300 MHz to 9 500 MHz.
• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.
• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).
• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.
• The antenna rotates and can be changed in elevation.
• The used waveguide is WR90/WG16 waveguide according to IEC 60153-2 [i.2] with a minimum length
between the output of the transmitter and the input of the antenna of 915 mm (20 times the wavelength of the
waveguide cut-off frequency).
• The antenna feed is waveguide based and the antenna is passive.
• The orientation of the transmitted field from the antenna can be vertical or horizontal polarized or it can be
both simultaneously.
• At the transceiver output an RF circulator is used.
NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 2: According to provision 5.475B of the ITU Radio Regulations [i.7], ground-based radars used for
meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other radiolocation
uses.
NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in
Recommendation ITU-R M.1849-1 [i.3].
NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
ETSI

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8 ETSI EN 303 347-3 V2.1.1 (2021-06)
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based
meteorological radars".
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.6] ETSI EG 203 336 (V1.2.1) (05-2020): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.7] ITU Radio Regulations (2020).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or
secondary basis
NOTE: A table of national frequency allocations are normally available from the radio authority for each national
state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].
assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
assigned frequency band: frequency band within which the emission of a station is authorized
NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency
tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum
Doppler shift that may occur in relation to any point of the Earth's surface.
ETSI

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9 ETSI EN 303 347-3 V2.1.1 (2021-06)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
characteristic frequency: frequency which can be easily identified and measured in a given emission
NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
declared band: band or bands within which the product under test is declared to operate in the applicable operating
modes
NOTE: The declared band for a given region or country is always contained within the allocated band.
frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an
emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency
6
NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
idle/standby state: state where the transmitter is available for operation but is not in the active state
necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of
N
information at the rate and with the quality required under specified conditions for a given class of emission
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a
transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating
conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage) in seconds
receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted
interfering signal outside the B bandwidth
-40
ETSI

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10 ETSI EN 303 347-3 V2.1.1 (2021-06)
reference frequency: frequency having a fixed and specified position with respect to the assigned frequency
NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value
and sign that the displacement of the characteristic frequency has with r
...

Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)






HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 3: Meteorological Radar Sensor operating
in the frequency band 9 300 MHz to 9 500 MHz (X band)

---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)



Reference
DEN/ERM-TGAERO-42-3
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2021.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter requirements . 11
4.2.1.1 Frequency Tolerance . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter output power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 12
4.2.1.2.3 Conformance . 12
4.2.1.3 Measured B Bandwidth . 12
-40
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-Band emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 13
4.2.1.4.3 Conformance . 14
4.2.1.5 Spurious emissions . 14
4.2.1.5.1 Definition. 14
4.2.1.5.2 Limits . 15
4.2.1.5.3 Conformance . 15
4.2.1.6 Stand-by Mode emissions . 16
4.2.1.6.1 Definition. 16
4.2.1.6.2 Limits . 16
4.2.1.6.3 Conformance . 16
4.2.2 Receiver Requirements . 16
4.2.2.1 Noise Figure . 16
4.2.2.1.1 Definition. 16
4.2.2.1.2 Limits . 16
4.2.2.1.3 Conformance . 16
4.2.2.2 Receiver Selectivity . 16
4.2.2.2.1 Definition. 16
4.2.2.2.2 Limits . 16
4.2.2.2.3 Conformance . 18
4.2.2.3 Receiver Compression Level . 18
4.2.2.3.1 Definition. 18
4.2.2.3.2 Limits . 19
4.2.2.3.3 Conformance . 19
5 Testing for compliance with technical requirements . 19
5.1 General requirements . 19
ETSI

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4 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
5.2 Environmental conditions for testing . 20
5.2.1 Test Conditions . 20
5.2.2 Normal temperature and humidity . 20
5.2.3 Normal test power supply . 20
5.3 Radio test suites . 20
5.3.1 Transmitter test specification . 20
5.3.1.1 Frequency Tolerance . 20
5.3.1.2 Transmitter Power . 21
5.3.1.3 Measured B Bandwidth . 21
-40
5.3.1.4 Out-of-Band emissions . 22
5.3.1.5 Spurious emissions . 23
5.3.1.6 Stand-by Mode Emissions . 25
5.3.2 Receiver Test specification . 25
5.3.2.1 Noise Figure . 25
5.3.2.2 Receiver Selectivity . 26
5.3.2.2.1 General . 26
5.3.2.2.2 Receiver unwanted Signal Selectivity . 26
5.3.2.3 Receiver Compression Level . 27
5.3.2.3.1 General . 27
5.3.2.3.2 Receiver Compression Level . 27
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (normative): Calculation of the -40 dB Bandwidth . 29
Annex C (normative): Operating frequency and transmitter power measurement setup . 31
Annex D (normative): Spurious and OoB emission measurement setup . 32
Annex E (normative): Receiver selectivity and compression level measurement setup . 33
Annex F (informative): Maximum Measurement Uncertainty . 34
Annex G (informative): WR90/WG16 waveguide characteristics . 35
Annex H (informative): Checklist . 37
History . 39


ETSI

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5 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the
ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering meteorological radar systems for different frequency
bands, as identified below:
Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz (S band)";
Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";
Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz
(X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI

---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
1 Scope
The present document specifies technical characteristics and methods of measurements for X band meteorological radar
systems intended for the surveillance and classification of hydrometeors with the following characteristics:
• Operating in the following frequency range:
- 9 300 MHz to 9 500 MHz.
• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.
• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).
• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.
• The antenna rotates and can be changed in elevation.
• The used waveguide is WR90/WG16 waveguide according to IEC 60153-2 [i.2] with a minimum length
between the output of the transmitter and the input of the antenna of 915 mm (20 times the wavelength of the
waveguide cut-off frequency).
• The antenna feed is waveguide based and the antenna is passive.
• The orientation of the transmitted field from the antenna can be vertical or horizontal polarized or it can be
both simultaneously.
• At the transceiver output an RF circulator is used.
NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 2: According to provision 5.475B of the ITU Radio Regulations [i.7], ground-based radars used for
meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other radiolocation
uses.
NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in
Recommendation ITU-R M.1849-1 [i.3].
NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
ETSI

---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based
meteorological radars".
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.6] ETSI EG 203 336 (V1.2.1) (2020-05): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.7] ITU Radio Regulations (2020).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or
secondary basis
NOTE: A table of national frequency allocations are normally available from the radio authority for each national
state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].
assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
assigned frequency band: frequency band within which the emission of a station is authorized
NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency
tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum
Doppler shift that may occur in relation to any point of the Earth's surface.
ETSI

---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
characteristic frequency: frequency which can be easily identified and measured in a given emission
NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
declared band: band or bands within which the product under test is declared to operate in the applicable operating
modes
NOTE: The declared band for a given region or country is always contained within the allocated band.
frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an
emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency
6
NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
idle/standby state: state where the transmitter is available for operation but is not in the active state
necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of
N
information at the rate and with the quality required under specified conditions for a given class of emission
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a
transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating
conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage) in seconds
receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted
interfering signal outside the B bandwidth
-40
ETSI

---------------------- Page: 9 ----------------------
10 Final draft ETSI EN 303 347-3 V1.1.5 (2021-03)
reference frequency: frequency having a fixed and specified position with respect to the assigned frequency
NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value
and sign that the displacement of the characteristic frequency has with respect to the centre of the
frequency band occupied by the emission.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of
which may be reduced without affecting the corresponding transmission of information
NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and
frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
system coupler: directional waveguide coupler with forward and reverse port or only a forward port
NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not
directly located behind the antenna. Usually it is located very close behind the circulator.
trapezoidal pulse: pulse which linearly rise
...

Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)






HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 3: Meteorological Radar Sensor operating
in the frequency band 9 300 MHz to 9 500 MHz (X band)

---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)



Reference
DEN/ERM-TGAERO-42-3
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
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Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter requirements . 11
4.2.1.1 Frequency Tolerance . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter output power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 12
4.2.1.2.3 Conformance . 12
4.2.1.3 Measured B Bandwidth . 12
-40
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-Band emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 13
4.2.1.4.3 Conformance . 14
4.2.1.5 Spurious emissions . 14
4.2.1.5.1 Definition. 14
4.2.1.5.2 Limits . 15
4.2.1.5.3 Conformance . 15
4.2.1.6 Stand-by Mode emissions . 16
4.2.1.6.1 Definition. 16
4.2.1.6.2 Limits . 16
4.2.1.6.3 Conformance . 16
4.2.2 Receiver Requirements . 16
4.2.2.1 Noise Figure . 16
4.2.2.1.1 Definition. 16
4.2.2.1.2 Limits . 16
4.2.2.1.3 Conformance . 16
4.2.2.2 Receiver Selectivity . 16
4.2.2.2.1 Definition. 16
4.2.2.2.2 Limits . 16
4.2.2.2.3 Conformance . 18
4.2.2.3 Receiver Compression Level . 18
4.2.2.3.1 Definition. 18
4.2.2.3.2 Limits . 19
4.2.2.3.3 Conformance . 19
5 Testing for compliance with technical requirements . 19
5.1 General requirements . 19
ETSI

---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
5.2 Environmental conditions for testing . 20
5.2.1 Test Conditions . 20
5.2.2 Normal temperature and humidity . 20
5.2.3 Normal test power supply . 20
5.3 Radio test suites . 20
5.3.1 Transmitter test specification . 20
5.3.1.1 Frequency Tolerance . 20
5.3.1.2 Transmitter Power . 21
5.3.1.3 Measured B Bandwidth . 21
-40
5.3.1.4 Out-of-Band emissions . 22
5.3.1.5 Spurious emissions . 23
5.3.1.6 Stand-by Mode Emissions . 25
5.3.2 Receiver Test specification . 25
5.3.2.1 Noise Figure . 25
5.3.2.2 Receiver Selectivity . 26
5.3.2.2.1 General . 26
5.3.2.2.2 Receiver unwanted Signal Selectivity . 26
5.3.2.3 Receiver Compression Level . 27
5.3.2.3.1 General . 27
5.3.2.3.2 Receiver Compression Level . 27
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (normative): Calculation of the -40 dB Bandwidth . 29
Annex C (normative): Operating frequency and transmitter power measurement setup . 31
Annex D (normative): Spurious and OoB emission measurement setup . 32
Annex E (normative): Receiver selectivity and compression level measurement setup . 33
Annex F (informative): Maximum Measurement Uncertainty . 34
Annex G (informative): WR90/WG16 waveguide characteristics . 35
Annex H (informative): Checklist . 37
History . 39


ETSI

---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the
ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering meteorological radar systems for different frequency
bands, as identified below:
Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz (S band)";
Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";
Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz
(X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI

---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
1 Scope
The present document specifies technical characteristics and methods of measurements for X band meteorological radar
systems intended for the surveillance and classification of hydrometeors with the following characteristics:
• Operating in the following frequency range:
- 9 300 MHz to 9 500 MHz.
• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.
• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).
• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.
• The antenna rotates and can be changed in elevation.
• The used waveguide is WR90/WG16 waveguide according to IEC 60153-2 [i.2] with a minimum length
between the output of the transmitter and the input of the antenna of 915 mm (20 times the wavelength of the
waveguide cut-off frequency).
• The antenna feed is waveguide based and the antenna is passive.
• The orientation of the transmitted field from the antenna can be vertical or horizontal polarized or it can be
both simultaneously.
• At the transceiver output an RF circulator is used.
NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 2: According to provision 5.475B of the ITU Radio Regulations [i.7], ground-based radars used for
meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other radiolocation
uses.
NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in
Recommendation ITU-R M.1849-1 [i.3].
NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
ETSI

---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based
meteorological radars".
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.6] ETSI EG 203 336 (V1.2.1) (2020-05): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.7] ITU Radio Regulations (2020).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or
secondary basis
NOTE: A table of national frequency allocations are normally available from the radio authority for each national
state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].
assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
assigned frequency band: frequency band within which the emission of a station is authorized
NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency
tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum
Doppler shift that may occur in relation to any point of the Earth's surface.
ETSI

---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
characteristic frequency: frequency which can be easily identified and measured in a given emission
NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
declared band: band or bands within which the product under test is declared to operate in the applicable operating
modes
NOTE: The declared band for a given region or country is always contained within the allocated band.
frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an
emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency
6
NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
idle/standby state: state where the transmitter is available for operation but is not in the active state
necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of
N
information at the rate and with the quality required under specified conditions for a given class of emission
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a
transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating
conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage) in seconds
receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted
interfering signal outside the B bandwidth
-40
ETSI

---------------------- Page: 9 ----------------------
10 Final draft ETSI EN 303 347-3 V1.1.4 (2020-12)
reference frequency: frequency having a fixed and specified position with respect to the assigned frequency
NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value
and sign that the displacement of the characteristic frequency has with respect to the centre of the
frequency band occupied by the emission.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of
which may be reduced without affecting the corresponding transmission of information
NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and
frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
system coupler: directional waveguide coupler with forward and reverse port or only a forward port
NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not
directly located behind the antenna. Usually it is located very close behind the circulator.
trapezoidal pulse: pulse which linearly ris
...

Draft ETSI EN 303 347-3 V1.1.3 (2020-06)






HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 3: Meteorological Radar Sensor operating
in the frequency band 9 300 MHz to 9 500 MHz (X band)

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)



Reference
DEN/ERM-TGAERO-42-3
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter requirements . 11
4.2.1.1 Frequency Tolerance . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter output power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 11
4.2.1.3 Measured B Bandwidth . 12
-40
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-Band emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 13
4.2.1.4.3 Conformance . 14
4.2.1.5 Spurious emissions . 14
4.2.1.5.1 Definition. 14
4.2.1.5.2 Limits . 15
4.2.1.5.3 Conformance . 15
4.2.1.6 Stand-by Mode emissions . 16
4.2.1.6.1 Definition. 16
4.2.1.6.2 Limits . 16
4.2.1.6.3 Conformance . 16
4.2.2 Receiver Requirements . 16
4.2.2.1 Noise Figure . 16
4.2.2.1.1 Definition. 16
4.2.2.1.2 Limits . 16
4.2.2.1.3 Conformance . 16
4.2.2.2 Receiver Selectivity . 16
4.2.2.2.1 Definition. 16
4.2.2.2.2 Limits . 16
4.2.2.2.3 Conformance . 18
4.2.2.3 Receiver Compression Level . 18
4.2.2.3.1 Definition. 18
4.2.2.3.2 Limits . 19
4.2.2.3.3 Conformance . 19
5 Testing for compliance with technical requirements . 19
5.1 General requirements . 19
ETSI

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4 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
5.2 Environmental conditions for testing . 20
5.2.1 Test Conditions . 20
5.2.2 Normal temperature and humidity . 20
5.2.3 Normal test power supply . 20
5.3 Interpretation of the measurements results . 20
5.4 Radio test suites . 20
5.4.1 Transmitter test specification . 20
5.4.1.1 Frequency Tolerance . 20
5.4.1.2 Transmitter Power . 21
5.4.1.3 Measured B Bandwidth . 21
-40
5.4.1.4 Out-of-Band emissions . 22
5.4.1.5 Spurious emissions . 23
5.4.1.6 Stand-by Mode Emissions . 25
5.4.2 Receiver Test specification . 25
5.4.2.1 Noise Figure . 25
5.4.2.2 Receiver Selectivity . 26
5.4.2.2.1 General . 26
5.4.2.2.2 Receiver unwanted Signal Selectivity . 26
5.4.2.3 Receiver Compression . 27
5.4.2.3.1 General . 27
5.4.2.3.2 Receiver Compression Level . 27
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (normative): Calculation of the -40 dB Bandwidth . 29
Annex C (normative): Operating frequency and transmitter power measurement setup . 31
Annex D (normative): Spurious and OoB emission measurement setup . 32
Annex E (normative): Receiver selectivity and compression level measurement setup . 33
Annex F (informative): Maximum Measurement Uncertainty . 34
Annex G (informative): WR90/WG16 waveguide characteristics . 35
Annex H (informative): Checklist . 37
History . 39


ETSI

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5 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering meteorological radar systems for different frequency
bands, as identified below:
Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz (S band)";
Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";
Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz
(X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI

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6 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

---------------------- Page: 6 ----------------------
7 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
1 Scope
The present document specifies technical characteristics and methods of measurements for X-band meteorological radar
systems intended for the surveillance and classification of hydrometeors with the following characteristics:
• Operating in the following frequency range:
- 9 300 MHz to 9 500 MHz
• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.
• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).
• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.
• The antenna rotates and can be changed in elevation.
• The used waveguide is WR90/WG16 waveguide according to IEC 60153-2 [i.2].
• The antenna feed is waveguide based and the antenna is passive.
• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be
both simultaneously.
• At the transceiver output an RF circulator is used.
NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 2: According to provision 5.475B of the ITU Radio Regulations [i.7], ground-based radars used for
meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other radiolocation
uses.
NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in
Recommendation ITU-R M.1849-1 [i.3].
NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
ETSI

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8 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based
meteorological radars".
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.6] ETSI EG 203 336 (V1.2.1) (2020-05): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.7] ITU Radio Regulations (2016).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or
secondary basis
NOTE: A table of national frequency allocations are normally available from the radio authority for each national
state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].
assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
assigned frequency band: frequency band within which the emission of a station is authorized
NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency
tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum
Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
ETSI

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9 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
characteristic frequency: frequency which can be easily identified and measured in a given emission
NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
declared band: band or bands within which the product under test is declared to operate in the applicable operating
modes
NOTE: The declared band for a given region or country is always contained within the allocated band.
frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an
emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency
6
NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
idle/standby state: state where the transmitter is available for operation but is not in the active state
necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of
N
information at the rate and with the quality required under specified conditions for a given class of emission
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a
transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating
conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage) in seconds
receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted
interfering signal outside the B bandwidth
-40
reference frequency: frequency having a fixed and specified position with respect to the assigned frequency
NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value
and sign that the displacement of the characteristic frequency has with respect to the centre of the
frequency band occupied by the emission.
ETSI

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10 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of
which may be reduced without affecting the corresponding transmission of information
NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and
frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
system coupler: directional waveguide coupler with forward and reverse port or only a forward port
NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not
directly located behind the antenna. Usually it is located very close behind the circulator.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB
...

Draft ETSI EN 303 347-3 V1.1.0 (2019-04)






HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 3: X band Meteorological Radar Sensor operating
in the frequency band 9 300 MHz to 9 500 MHz

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)



Reference
DEN/ERM-TGAERO-42-3
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter requirements . 11
4.2.1.1 Frequency Tolerance . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter output power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 11
4.2.1.3 Measured B Bandwidth . 12
-40
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-Band emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 13
4.2.1.4.3 Conformance . 14
4.2.1.5 Spurious emissions . 14
4.2.1.5.1 Definition. 14
4.2.1.5.2 Limits . 15
4.2.1.5.3 Conformance . 15
4.2.1.6 Stand-by Mode Emissions . 16
4.2.1.6.1 Definition. 16
4.2.1.6.2 Limits . 16
4.2.1.6.3 Conformance . 16
4.2.2 Receiver Requirements . 16
4.2.2.1 Noise Figure . 16
4.2.2.1.1 Definition. 16
4.2.2.1.2 Limits . 16
4.2.2.1.3 Conformance . 16
4.2.2.2 Receiver selectivity . 16
4.2.2.2.1 Definition. 16
4.2.2.2.2 Limits . 16
4.2.2.2.3 Conformance . 18
4.2.2.3 Receiver Compression Level . 18
4.2.2.3.1 Definition. 18
4.2.2.3.2 Limits . 19
4.2.2.3.3 Conformance . 19
5 Testing for compliance with technical requirements . 19
5.1 General requirements . 19
ETSI

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4 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
5.2 Environmental conditions for testing . 20
5.2.1 Test Conditions . 20
5.2.2 Normal temperature and humidity . 20
5.2.3 Normal test power supply . 20
5.3 Interpretation of the measurements results . 20
5.4 Radio test suites . 20
5.4.1 Transmitter test specification . 20
5.4.1.1 Frequency Tolerance . 20
5.4.1.2 Transmitter Power . 21
5.4.1.3 Measured B Bandwidth . 21
-40
5.4.1.4 Out-of-Band emissions . 22
5.4.1.5 Spurious emissions . 23
5.4.1.6 Stand-by Mode Emissions . 24
5.4.2 Receiver Test specification . 25
5.4.2.1 Noise Figure . 25
5.4.2.2 Receiver Selectivity . 25
5.4.2.2.1 General . 25
5.4.2.2.2 Receiver OoB selectivity . 25
5.4.2.3 Receiver Compression . 27
5.4.2.3.1 General . 27
5.4.2.3.2 Receiver Compression Level . 27
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (normative): Calculation of the -40 dB Bandwidth . 29
Annex C (normative): Operating frequency, transmitter power and OoB measurement
setup . 31
Annex D (normative): Spurious emission measurement setup . 32
Annex E (normative): Receiver selectivity measurement setup . 33
Annex F (informative): Maximum Measurement Uncertainty . 34
History . 35


ETSI

---------------------- Page: 4 ----------------------
5 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering meteorological radar systems for different frequency
bands, as identified below:
Part 1: "S band Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz";
Part 2: "C band Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz";
Part 3: "X band Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI

---------------------- Page: 5 ----------------------
6 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

---------------------- Page: 6 ----------------------
7 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
1 Scope
The present document specifies technical characteristics and methods of measurements for X-band meteorological radar
systems intended for the surveillance and classification of hydrometeors with the following characteristics:
• Operating in the following frequency range:
- 9 300 MHz to 9 500 MHz
• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.
• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).
• The transceiver antenna connection and its feeding RF line are using a hollow metallic rectangular or elliptic
waveguide.
• The antenna is rotating and can be changed in elevation.
• The antenna feed is waveguide based and the antenna is passive.
• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be
both simultaneously.
• At the transceiver output a RF circulator is used.
NOTE 1: Since transceiver and antenna are based on hollow metallic rectangular waveguide the frequency range
for measurements that needs to be addressed covers 6 556 MHz to 26 GHz. The lower limit of this
frequency range is obtained as the cut-off frequency of the generally used WR90/WG16 waveguide
according to IEC 60153-2 [i.2]. The upper limit corresponds to the upper limit stated in
ERC/Recommendation 74-01 [1], Table 1.
NOTE 2: Since at the transceiver output a RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 3: Meteorological radar systems covered by the present document are expected to use the band 9 300 MHz
to 9 500 MHz. According to provision 5.475B of the ITU Radio Regulations [4], ground-based radars
used for meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other
radiolocation uses.
NOTE 4: Further technical and operational characteristics of meteorological radar systems can be found in
Recommendation ITU-R M.1849-1 [i.3].
NOTE 5: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references
References are specific, identified by date of publication and/or edition number or version number. Only the cited
version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ERC/Recommendation 74-01 (2011): "Unwanted emissions in the spurious domain".
ETSI

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8 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
[4] ITU Radio Regulations (2016).
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based
meteorological radars".
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or
secondary basis
NOTE: A table of national frequency allocations are normally available from the radio authority for each national
state. A generic frequency allocation table is also available in the ITU Radio Regulations [4].
assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [4].
assigned frequency band: frequency band within which the emission of a station is authorized
NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency
tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum
Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
ETSI

---------------------- Page: 8 ----------------------
9 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
characteristic frequency: frequency which can be easily identified and measured in a given emission
NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
declared band: band or bands within which the product under test is declared to operate in the applicable operating
modes
NOTE: The declared band for a given region or country is always contained within the allocated band.
frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an
emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency
6
NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
idle/standby state: state where the transmitter is available for traffic but is not in the active state
necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of
N
information at the rate and with the quality required under specified conditions for a given class of emission
NOTE: This definition is taken from the ITU Radio Regulations [4].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious
NOTE: This definition is taken from the ITU Radio Regulations [4].
peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a
transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating
conditions
NOTE: This definition is taken from the ITU Radio Regulations [4].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage) in seconds
receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted
interfering signal which is usually in the adjacent band
reference frequency: frequency having a fixed and specified position with respect to the assigned frequency
NOTE 1: The displacement of this frequency with respect to the assigned frequency has the same absolute value
and sign that the displacement of the characteristic frequency has with respect to the centre of the
frequency band occupied by the emission.
ETSI

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10 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of
which may be reduced without affecting the corresponding transmission of information
NOTE 1: Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and
frequency conversion products, but exclude out-of-band emissions.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
system coupler: high power directional waveguide coupler with forward and reverse port or only a forward port
NOTE: The system coupler is inserted in the waveguide run between the circulator and the antenna but not
directly located behind the antenna. Usually it is located very close behind the circulator.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
B -40 dB band
...

SLOVENSKI STANDARD
oSIST prEN 303 347-3 V1.1.0:2019
01-junij-2019
0HWHRURORãNLUDGDUML+DUPRQL]LUDQLVWDQGDUG]DGRVWRSGRUDGLMVNHJDVSHNWUD
GHO0HWHRURORãNLUDGDUVNLVHQ]RU;SDVXNLGHOXMHYIUHNYHQþQHPSDVXRG
0+]GR0+]
Meteorological Radars - Harmonised Standard for access to radio spectrum - Part 3: X
band Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500
MHz
Ta slovenski standard je istoveten z: ETSI EN 303 347-3 V1.1.0 (2019-04)
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
oSIST prEN 303 347-3 V1.1.0:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 303 347-3 V1.1.0:2019

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oSIST prEN 303 347-3 V1.1.0:2019
Draft ETSI EN 303 347-3 V1.1.0 (2019-04)






HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 3: X band Meteorological Radar Sensor operating
in the frequency band 9 300 MHz to 9 500 MHz

---------------------- Page: 3 ----------------------
oSIST prEN 303 347-3 V1.1.0:2019

2 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)



Reference
DEN/ERM-TGAERO-42-3
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
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ETSI

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3 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter requirements . 11
4.2.1.1 Frequency Tolerance . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter output power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 11
4.2.1.3 Measured B Bandwidth . 12
-40
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-Band emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 13
4.2.1.4.3 Conformance . 14
4.2.1.5 Spurious emissions . 14
4.2.1.5.1 Definition. 14
4.2.1.5.2 Limits . 15
4.2.1.5.3 Conformance . 15
4.2.1.6 Stand-by Mode Emissions . 16
4.2.1.6.1 Definition. 16
4.2.1.6.2 Limits . 16
4.2.1.6.3 Conformance . 16
4.2.2 Receiver Requirements . 16
4.2.2.1 Noise Figure . 16
4.2.2.1.1 Definition. 16
4.2.2.1.2 Limits . 16
4.2.2.1.3 Conformance . 16
4.2.2.2 Receiver selectivity . 16
4.2.2.2.1 Definition. 16
4.2.2.2.2 Limits . 16
4.2.2.2.3 Conformance . 18
4.2.2.3 Receiver Compression Level . 18
4.2.2.3.1 Definition. 18
4.2.2.3.2 Limits . 19
4.2.2.3.3 Conformance . 19
5 Testing for compliance with technical requirements . 19
5.1 General requirements . 19
ETSI

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4 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
5.2 Environmental conditions for testing . 20
5.2.1 Test Conditions . 20
5.2.2 Normal temperature and humidity . 20
5.2.3 Normal test power supply . 20
5.3 Interpretation of the measurements results . 20
5.4 Radio test suites . 20
5.4.1 Transmitter test specification . 20
5.4.1.1 Frequency Tolerance . 20
5.4.1.2 Transmitter Power . 21
5.4.1.3 Measured B Bandwidth . 21
-40
5.4.1.4 Out-of-Band emissions . 22
5.4.1.5 Spurious emissions . 23
5.4.1.6 Stand-by Mode Emissions . 24
5.4.2 Receiver Test specification . 25
5.4.2.1 Noise Figure . 25
5.4.2.2 Receiver Selectivity . 25
5.4.2.2.1 General . 25
5.4.2.2.2 Receiver OoB selectivity . 25
5.4.2.3 Receiver Compression . 27
5.4.2.3.1 General . 27
5.4.2.3.2 Receiver Compression Level . 27
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (normative): Calculation of the -40 dB Bandwidth . 29
Annex C (normative): Operating frequency, transmitter power and OoB measurement
setup . 31
Annex D (normative): Spurious emission measurement setup . 32
Annex E (normative): Receiver selectivity measurement setup . 33
Annex F (informative): Maximum Measurement Uncertainty . 34
History . 35


ETSI

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5 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering meteorological radar systems for different frequency
bands, as identified below:
Part 1: "S band Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz";
Part 2: "C band Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz";
Part 3: "X band Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

ETSI

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6 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

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7 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
1 Scope
The present document specifies technical characteristics and methods of measurements for X-band meteorological radar
systems intended for the surveillance and classification of hydrometeors with the following characteristics:
• Operating in the following frequency range:
- 9 300 MHz to 9 500 MHz
• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.
• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).
• The transceiver antenna connection and its feeding RF line are using a hollow metallic rectangular or elliptic
waveguide.
• The antenna is rotating and can be changed in elevation.
• The antenna feed is waveguide based and the antenna is passive.
• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be
both simultaneously.
• At the transceiver output a RF circulator is used.
NOTE 1: Since transceiver and antenna are based on hollow metallic rectangular waveguide the frequency range
for measurements that needs to be addressed covers 6 556 MHz to 26 GHz. The lower limit of this
frequency range is obtained as the cut-off frequency of the generally used WR90/WG16 waveguide
according to IEC 60153-2 [i.2]. The upper limit corresponds to the upper limit stated in
ERC/Recommendation 74-01 [1], Table 1.
NOTE 2: Since at the transceiver output a RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 3: Meteorological radar systems covered by the present document are expected to use the band 9 300 MHz
to 9 500 MHz. According to provision 5.475B of the ITU Radio Regulations [4], ground-based radars
used for meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other
radiolocation uses.
NOTE 4: Further technical and operational characteristics of meteorological radar systems can be found in
Recommendation ITU-R M.1849-1 [i.3].
NOTE 5: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references
References are specific, identified by date of publication and/or edition number or version number. Only the cited
version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ERC/Recommendation 74-01 (2011): "Unwanted emissions in the spurious domain".
ETSI

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oSIST prEN 303 347-3 V1.1.0:2019

8 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
[4] ITU Radio Regulations (2016).
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] IEC 60153-2 (Edition 2.0, 1974): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based
meteorological radars".
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or
secondary basis
NOTE: A table of national frequency allocations are normally available from the radio authority for each national
state. A generic frequency allocation table is also available in the ITU Radio Regulations [4].
assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [4].
assigned frequency band: frequency band within which the emission of a station is authorized
NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency
tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum
Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
ETSI

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9 Draft ETSI EN 303 347-3 V1.1.0 (2019-04)
characteristic frequency: frequency which can be easily identified and measured in a given emission
NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
declared band: band or bands within which the product under test is declared to operate in the applicable operating
modes
NOTE: The declared band for a given region or country is always contained within the allocated band.
frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an
emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency
6
NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
idle/standby state: state where the transmitter is available for traffic but is not in the active state
necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of
N
information at the rate and with the quality required under specified conditions for a given class of emission
NOTE: This definition is taken from the ITU Radio Regulations [4].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [4].
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious
NOTE: This definition is taken from the ITU Radio Regulations [4].
peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a
transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating
conditions
NOTE: This definition is taken from the ITU Radio Regulations [4].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage) in seconds
receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted
interfering signal which is usually in the adjacent band
reference frequency: frequency having a fixed and specified position with respect to the assigned frequency
NOTE 1:
...

SLOVENSKI STANDARD
oSIST prEN 303 347-3 V1.1.3:2020
01-julij-2020
Meteorološki radarji - Harmonizirani standard za dostop do radijskega spektra - 3.
del: Meteorološki radarski senzor, ki deluje v frekvenčnem pasu od 9300 MHz do
9500 MHz (pas X)
Meteorological Radars - Harmonised Standard for access to radio spectrum - Part 3:
Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz
(X band)
Ta slovenski standard je istoveten z: ETSI EN 303 347-3 V1.1.3 (2020-06)
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
oSIST prEN 303 347-3 V1.1.3:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 303 347-3 V1.1.3:2020

---------------------- Page: 2 ----------------------
oSIST prEN 303 347-3 V1.1.3:2020
Draft ETSI EN 303 347-3 V1.1.3 (2020-06)






HARMONISED EUROPEAN STANDARD
Meteorological Radars;
Harmonised Standard for access to radio spectrum;
Part 3: Meteorological Radar Sensor operating
in the frequency band 9 300 MHz to 9 500 MHz (X band)

---------------------- Page: 3 ----------------------
oSIST prEN 303 347-3 V1.1.3:2020

2 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)



Reference
DEN/ERM-TGAERO-42-3
Keywords
harmonised standard, radar, radio
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

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ETSI

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3 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Technical requirements specifications . 11
4.1 Environmental profile . 11
4.2 Conformance requirements . 11
4.2.1 Transmitter requirements . 11
4.2.1.1 Frequency Tolerance . 11
4.2.1.1.1 Definition. 11
4.2.1.1.2 Limits . 11
4.2.1.1.3 Conformance . 11
4.2.1.2 Transmitter output power . 11
4.2.1.2.1 Definition. 11
4.2.1.2.2 Limits . 11
4.2.1.2.3 Conformance . 11
4.2.1.3 Measured B Bandwidth . 12
-40
4.2.1.3.1 Definition. 12
4.2.1.3.2 Limits . 12
4.2.1.3.3 Conformance . 12
4.2.1.4 Out-of-Band emissions . 12
4.2.1.4.1 Definition. 12
4.2.1.4.2 Limits . 13
4.2.1.4.3 Conformance . 14
4.2.1.5 Spurious emissions . 14
4.2.1.5.1 Definition. 14
4.2.1.5.2 Limits . 15
4.2.1.5.3 Conformance . 15
4.2.1.6 Stand-by Mode emissions . 16
4.2.1.6.1 Definition. 16
4.2.1.6.2 Limits . 16
4.2.1.6.3 Conformance . 16
4.2.2 Receiver Requirements . 16
4.2.2.1 Noise Figure . 16
4.2.2.1.1 Definition. 16
4.2.2.1.2 Limits . 16
4.2.2.1.3 Conformance . 16
4.2.2.2 Receiver Selectivity . 16
4.2.2.2.1 Definition. 16
4.2.2.2.2 Limits . 16
4.2.2.2.3 Conformance . 18
4.2.2.3 Receiver Compression Level . 18
4.2.2.3.1 Definition. 18
4.2.2.3.2 Limits . 19
4.2.2.3.3 Conformance . 19
5 Testing for compliance with technical requirements . 19
5.1 General requirements . 19
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4 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
5.2 Environmental conditions for testing . 20
5.2.1 Test Conditions . 20
5.2.2 Normal temperature and humidity . 20
5.2.3 Normal test power supply . 20
5.3 Interpretation of the measurements results . 20
5.4 Radio test suites . 20
5.4.1 Transmitter test specification . 20
5.4.1.1 Frequency Tolerance . 20
5.4.1.2 Transmitter Power . 21
5.4.1.3 Measured B Bandwidth . 21
-40
5.4.1.4 Out-of-Band emissions . 22
5.4.1.5 Spurious emissions . 23
5.4.1.6 Stand-by Mode Emissions . 25
5.4.2 Receiver Test specification . 25
5.4.2.1 Noise Figure . 25
5.4.2.2 Receiver Selectivity . 26
5.4.2.2.1 General . 26
5.4.2.2.2 Receiver unwanted Signal Selectivity . 26
5.4.2.3 Receiver Compression . 27
5.4.2.3.1 General . 27
5.4.2.3.2 Receiver Compression Level . 27
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 28
Annex B (normative): Calculation of the -40 dB Bandwidth . 29
Annex C (normative): Operating frequency and transmitter power measurement setup . 31
Annex D (normative): Spurious and OoB emission measurement setup . 32
Annex E (normative): Receiver selectivity and compression level measurement setup . 33
Annex F (informative): Maximum Measurement Uncertainty . 34
Annex G (informative): WR90/WG16 waveguide characteristics . 35
Annex H (informative): Checklist . 37
History . 39


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5 Draft ETSI EN 303 347-3 V1.1.3 (2020-06)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C (2015) 5376 final [i.5] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering meteorological radar systems for different frequency
bands, as identified below:
Part 1: "Meteorological Radar Sensor operating in the frequency band 2 700 MHz to 2 900 MHz (S band)";
Part 2: "Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)";
Part 3: "Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz
(X band)".

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

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Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

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1 Scope
The present document specifies technical characteristics and methods of measurements for X-band meteorological radar
systems intended for the surveillance and classification of hydrometeors with the following characteristics:
• Operating in the following frequency range:
- 9 300 MHz to 9 500 MHz
• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.
• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).
• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.
• The antenna rotates and can be changed in elevation.
• The used waveguide is WR90/WG16 waveguide according to IEC 60153-2 [i.2].
• The antenna feed is waveguide based and the antenna is passive.
• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be
both simultaneously.
• At the transceiver output an RF circulator is used.
NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 2: According to provision 5.475B of the ITU Radio Regulations [i.7], ground-based radars used for
meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other radiolocation
uses.
NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in
Recommendation ITU-R M.1849-1 [i.3].
NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in Annex A.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ERC/Recommendation 74-01 (2019): "Unwanted emissions in the spurious domain".
[2] ECC/Recommendation (02)05 (2012): "Unwanted emissions".
[3] Recommendation ITU-R M.1177-4 (04/2011): "Techniques for measurement of unwanted
emissions of radar systems".
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2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] IEC 60153-2 (Edition 3.0, 2016): "Hollow metallic waveguides. Part 2: Relevant specifications for
ordinary rectangular waveguides".
[i.3] Recommendation ITU-R M.1849-1 (09/2015): "Technical and operational aspects of ground-based
meteorological radars".
[i.4] Recommendation ITU-R SM.1541-6 (08/2015): "Unwanted emissions in the out-of-band domain".
[i.5] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.6] ETSI EG 203 336 (V1.2.1) (2020-05): "Guide for the selection of technical parameters for the
production of Harmonised Standards covering article 3.1(b) and article 3.2 of Directive
2014/53/EU".
[i.7] ITU Radio Regulations (2016).
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active state: state which produces the authorized emission
allocated band: frequency span that regionally or nationally is allocated to one or more radio services on a primary or
secondary basis
NOTE: A table of national frequency allocations are normally available from the radio authority for each national
state. A generic frequency allocation table is also available in the ITU Radio Regulations [i.7].
assigned frequency: centre of the frequency band assigned to a station
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
assigned frequency band: frequency band within which the emission of a station is authorized
NOTE 1: The width of the band equals the necessary bandwidth plus twice the absolute value of the frequency
tolerance. Where space stations are concerned, the assigned frequency band includes twice the maximum
Doppler shift that may occur in relation to any point of the Earth's surface.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
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characteristic frequency: frequency which can be easily identified and measured in a given emission
NOTE 1: A carrier frequency may, for example, be designed as the characteristic frequency.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
declared band: band or bands within which the product under test is declared to operate in the applicable operating
modes
NOTE: The declared band for a given region or country is always contained within the allocated band.
frequency tolerance: maximum permissible departure by the centre frequency of the frequency band occupied by an
emission from the assigned frequency or, by the characteristic frequency of an emission from the reference frequency
6
NOTE 1: The frequency tolerance is expressed in parts in 10 or in Hertz.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
idle/standby state: state where the transmitter is available for operation but is not in the active state
necessary bandwidth B : width of the frequency band which is just sufficient to ensure the transmission of
N
information at the rate and with the quality required under specified conditions for a given class of emission
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the
mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission
NOTE 1: Unless otherwise specified in a Recommendation ITU-R for the appropriate class of emission, the value
of β/2 should be taken as 0,5 %.
NOTE 2: This definition is taken from the ITU Radio Regulations [i.7].
operating mode: predefined configuration for a given service accessible to the operator of the radar system
NOTE 1: Several operating modes may be available.
NOTE 2: Changing operating mode might affect the radio characteristics of the radar system.
out-of-band emission: emission on a frequency or frequencies immediately outside the necessary bandwidth which
results from the modulation process, but excluding spurious emissions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
peak envelope power (of a radio transmitter): average power supplied to the antenna transmission line by a
transmitter during one radio frequency cycle at the crest of the modulation envelope taken under normal operating
conditions
NOTE: This definition is taken from the ITU Radio Regulations [i.7].
product configuration: hardware variant of the same typology of system under test (e.g. different power outputs,
magnetrons)
pulse duration: time in seconds between the 50 % amplitude (voltage) points of a transmitted pulse
pulse rise time: time taken for the leading edge of the pulse to increase from 10 % to 90 % of the maximum amplitude
(voltage) in seconds
receiver selectivity: ability of a receiver to detect and decode a desired signal in the presence of an unwanted
interfering signal outside the B bandwidth
-40
reference frequency: frequency having a fixed and specified position with respect to the assigned fre
...