SIST EN 303 753 V1.1.1:2024

Final draft ETSI EN 303 753 V1.1.0 (2024-03)

HARMONISED EUROPEAN STANDARD
Wideband Data Transmission Systems (WDTS)
for Mobile and Fixed Radio Equipment
operating in the 57 - 71 GHz band;
Harmonised Standard for access to radio spectrum

2 Final draft ETSI EN 303 753 V1.1.0 (2024-03)

Reference
DEN/BRAN-230026
Keywords
60 GHz, access, broadband, radio, SRD
ETSI
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Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

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Sous-Préfecture de Grasse (06) N° w061004871

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ETSI
3 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
Contents
Intellectual Property Rights . 6
Foreword. 6
Modal verbs terminology . 7
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
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 Occupied channel bandwidth . 11
4.2.1.1 Definition . 11
4.2.1.2 Limit . 11
4.2.1.3 Conformance . 11
4.2.2 RF output power . 11
4.2.2.1 Definition . 11
4.2.2.2 Limit . 11
4.2.2.3 Conformance . 12
4.2.3 Power Spectral Density . 12
4.2.3.1 Definition . 12
4.2.3.2 Limit . 12
4.2.3.3 Conformance . 12
4.2.4 Transmitter unwanted emissions . 12
4.2.4.1 Transmitter unwanted emissions in the out-of-band domain . 12
4.2.4.1.1 Definition . 12
4.2.4.1.2 Limit . 12
4.2.4.1.3 Conformance . 13
4.2.4.2 Transmitter unwanted emissions in the spurious domain . 13
4.2.4.2.1 Definition . 13
4.2.4.2.2 Limit . 13
4.2.4.2.3 Conformance . 14
4.2.5 Receiver spurious emissions . 14
4.2.5.1 Definition . 14
4.2.5.2 Limit . 14
4.2.5.3 Conformance . 14
4.2.6 Spectrum sharing mechanisms . 14
4.2.6.0 General . 14
4.2.6.1 Beamforming . 15
4.2.6.1.1 Definition . 15
4.2.6.1.2 Limit . 15
4.2.6.1.3 Conformance . 15
4.2.6.2 Automatic Transmit Power Control and Automatic Link Adaptation . 15
4.2.6.2.1 Definition . 15
4.2.6.2.2 Limit . 15
4.2.6.2.3 Conformance . 15
4.2.7 Receiver sensitivity . 16
4.2.7.1 Definition . 16
4.2.7.2 Performance Criteria. 16
4.2.7.3 Limit . 16
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4 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
4.2.7.4 Conformance . 16
4.2.8 Receiver Adjacent Channel Selectivity . 16
4.2.8.1 Definition . 16
4.2.8.2 Limit . 16
4.2.8.3 Conformance . 16
5 Testing for compliance with technical requirements. 17
5.1 Environmental conditions for testing . 17
5.1.1 General . 17
5.1.2 Normal test conditions . 17
5.1.2.1 Normal temperature and humidity . 17
5.1.2.2 Normal power source. 17
5.1.3 Extreme test conditions . 17
5.2 Interpretation of the measurement results . 17
5.3 Test procedure for the essential radio test suites . 17
5.3.0 General . 17
5.3.0a Product Information . 18
5.3.0b Test modulation, frequency and configuration . 18
5.3.1 Occupied channel bandwidth . 18
5.3.1.1 Test conditions. 18
5.3.1.2 Test method . 19
5.3.2 RF output power . 19
5.3.2.1 Test conditions. 19
5.3.2.2 Test method . 19
5.3.3 Power Spectral Density . 20
5.3.3.1 Test conditions. 20
5.3.3.2 Test method . 20
5.3.4 Transmitter unwanted emissions . 21
5.3.4.1 Transmitter unwanted emissions in the out-of-band domain . 21
5.3.4.1.1 Test conditions . 21
5.3.4.1.2 Test method . 21
5.3.4.2 Transmitter unwanted emissions in spurious domain . 22
5.3.4.2.1 Test conditions . 22
5.3.4.2.2 Test method (general) . 22
5.3.4.2.3 Pre-scan . 22
5.3.4.2.4 Identified frequencies . 23
5.3.5 Receiver spurious emissions . 23
5.3.5.1 Test conditions. 23
5.3.5.2 Test method . 24
5.3.5.2.1 Pre-scan . 24
5.3.5.2.2 Identified emissions . 24
5.3.6 Spectrum sharing mechanism . 25
5.3.6.1 Test conditions. 25
5.3.6.2 Test method (beamforming) . 25
5.3.6.3 Test method (ATPC) . 25
5.3.6.4 Test method (ALA) . 26
5.3.7 Receiver sensitivity . 27
5.3.7.1 Test conditions. 27
5.3.7.2 Test method . 28
5.3.8 Receiver Adjacent Channel Selectivity . 28
5.3.8.1 Test conditions. 28
5.3.8.2 Test method . 28
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 30
Annex B (informative): Maximum measurement uncertainty . 32
Annex C (normative): Test sites and arrangements for radiated measurements . 33
C.1 Test sites . 33
C.1.0 General . 33
C.1.1 Open air test sites . 33
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5 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
C.1.2 Anechoic chamber . 34
C.1.2.1 General . 34
C.1.2.2 Description . 34
C.1.2.3 Influence of parasitic reflections . 34
C.1.2.4 Calibration and mode of use . 35
C.2 Test antenna . 36
C.3 Substitution antenna . 37
Annex D (normative): General description of measurement . 38
D.1 Radiated measurements . 38
D.2 Substitution measurement . 39
Annex E (informative): Measurements procedure for verification of maximum power limits . 40
E.0 Radiated metrics and compliance with the harmonised technical conditions . 40
E.1 Metrics for radiated measurements . 40
E.2 TRP estimation . 41
E.2.1 General . 41
E.2.2 Pre-scan . 41
E.2.3 Methods based on spherical grid sampling . 41
E.2.4 Beam-based directions . 42
E.2.5 Peak method. 42
E.2.6 Equal sector with peak average . 42
Annex F (informative): Bibliography . 43
Annex G (informative): Change history . 44
History . 45

ETSI
6 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
Intellectual Property Rights
Essential patents
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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.
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Foreword
This final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Broadband
Radio Access Networks (BRAN), and is now submitted for the Vote phase of the ETSI Standardisation Request
deliverable Approval Procedure.
The present document has been prepared under the Commission Implementing Decision C(2015) 5376 final [i.1] 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.2].
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.
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
7 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
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.
Introduction
Radio equipment operating in the 60 GHz band are capable of supporting data rates of multiple-gigabit per second.
The spectrum usage conditions for this equipment are set in ERC Recommendation 70-03 [i.3], annex 3 frequency
band c2, frequency band c3 and Commission Decision 2019/1345/EU [i.4] bands 75a and 75b.
ETSI
8 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
1 Scope
The present document specifies technical characteristics and methods of measurements for Wideband Data
Transmission Systems (WDTS) fixed equipment installations intended for mobile network applications and mobile
equipment operating indoor and outdoor in the 57 GHz to 71 GHz frequency range.
The scope of the present document includes equipment in this frequency range in compliance with ERC
Recommendation 70-03 [i.3], annex 3 frequency band c2, frequency band c3 and Commission
Decision 2019/1345/EU [i.4] bands 75a and 75b.
Radio equipment within the scope of the present document are capable of operating in all or any part of the frequency
bands given in table 1.
Table 1: Radiocommunications service frequency band
Transmit/Receive Radiocommunications service frequency band
Transmit 57 GHz to 71 GHz
Receive 57 GHz to 71 GHz
NOTE: The relationship between the present document and essential requirements of article 3.2 of
Directive 2014/53/EU [i.2] 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.
Not applicable.
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] 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.
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9 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
[i.2] 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.3] ERC Recommendation 70-03 (Tromsø 1997 and subsequent amendments): "Relating to the use of
Short Range Devices (SRD)".
[i.4] Commission Implementing Decision (EU) 2019/1345 of 2 August 2019 amending Decision
2006/771/EC updating harmonised technical conditions in the area of radio spectrum use for
short-range devices.
[i.5] ERC Recommendation 74-01 (Approved 1998 and subsequent amendments): "Unwanted
emissions in the spurious domain".
[i.6] ETSI TS 138 141-2 (V16.10.0): "5G; NR; Base Station (BS) conformance testing; Part 2: Radiated
conformance testing (3GPP TS 38.141-2 version 16.10.0 Release 16)".
[i.7] ECC Report 288 (approved 25 January 2019): "Conditions for the coexistence between Fixed
Service and other envisaged outdoor uses/applications in the 57 - 66 GHz range".
[i.8] ETSI TS 138 521-2 (V17.3.0): "5G; NR; User Equipment (UE) conformance specification; Radio
transmission and reception; Part 2: Range 2 standalone (3GPP TS 38.521-2 version 17.3.0
Release 17)".
[i.9] ETSI TS 138 141-2 (V17.10.0): "5G; NR; Base Station (BS) conformance testing; Part 2: Radiated
conformance testing (3GPP TS 38.141-2 version 17.10.0 Release 17)".
[i.10] ETSI TR 138 903 (V17.2.0): "5G; NR; Derivation of test tolerances and measurement uncertainty
for User Equipment (UE) conformance test cases (3GPP TR 38.903 version 17.2.0 Release 17)".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in Directive 2014/53/EU [i.2] and the following apply:
60 GHz band: frequency range from 57 GHz to 71 GHz
antenna assembly: combination of the antenna (integral or dedicated), its coaxial cable and if applicable, its antenna
connector and associated switching components
NOTE 1: This term (antenna assembly) refers to an antenna connected to one transmit chain.
NOTE 2: The gain of an antenna assembly does not include the additional gain that may result out of beamforming.
beamforming gain: additional (antenna) gain realized by using beamforming techniques in smart antenna systems
NOTE: Beamforming gain as used in the present document does not include the gain of the antenna assembly.
channel separation: minimum separation (in MHz) between the centre frequencies of two adjacent channels in the
channel plan of the radio equipment
integral antenna: antenna designed as a part of the equipment, without the use of an external connector, which cannot
be disconnected from the equipment by a user with the intent to connect another antenna
NOTE 1: In some cases, it may not be possible to remove an integral antenna or expose an antenna connector
without changing the output characteristics of the radio equipment.
NOTE 2: Even with an integral antenna, it might still be possible to separate the antenna from the equipment using
a special tool.
mean power: (transmitted or received) power averaged during the on-time of the signal
ETSI
10 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
nominal channel bandwidth: bandwidth assigned to a single channel
NOTE: The nominal channel bandwidth is part of the product information as outlined in clause 5.3.0a.
occupied bandwidth: bandwidth of the signal containing 99 % of the transmitted mean power
NOTE: Both below the lower and above the upper frequency limits, the mean power emitted is equal to 0,5 % of
the total mean power of the emission.
smart antenna system: equipment that combines multiple transmit and/or receive antenna elements with a signal
processing function to increase its radiation and/or reception capabilities
3.2 Symbols
For the purposes of the present document, the following symbols apply:
D directivity
dB decibel
dBc decibels relative to the maximum power spectral density of the transmitted signal
dBi decibels relative to the gain of an isotropic antenna
dBm decibel relative to one milliwatt
dBr decibel relative to a given maximum power level
G gain of the antenna assembly
GHz gigahertz
kHz kilohertz
MHz megahertz
η antenna efficiency
μs microsecond
W watt
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AAS Active Antenna Systems
ACM Adaptive Code and Modulation
ALA Automatic Link Adaptation
ATPC Automatic Transmit Power Control
BW BandWidth
CATR Compact Antenna Test Range
CW Continuous Wave
DC Duty Cycle
EFTA European Free Trade Association
EIRP Equivalent Isotropically Radiated Power
EIRP Equivalent Isotropically Radiated Power spectral density
EUT Equipment Under Test
f nominal centre frequency of the transmission
C
FER Frame Error Rate
MCS Modulation and Coding Scheme
OTA Over The Air
PSD Power Spectral Density
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Devices
TP ThroughPut
TRP Total Radiated Power
UUT Unit Under Test
WDTS Wideband Data Transmission Systems
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11 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use. The equipment shall comply with all the technical
requirements of the present document at all times when operating within the boundary limits of the operational
environmental profile defined by its intended use. Conformance tests shall be carried out under environmental
conditions as defined in clause 5.1.
4.2 Conformance requirements
4.2.1 Occupied channel bandwidth
4.2.1.1 Definition
The occupied channel bandwidth is the bandwidth containing 99 % of the power of the signal.
4.2.1.2 Limit
The occupied channel bandwidth shall be less than the nominal channel bandwidth for any transmission. The device
shall support a mode of transmission with a necessary bandwidth at least 70 % of the nominal channel bandwidth. In
case of smart antenna systems (devices with multiple transmit chains) each of the transmit chains shall meet this
requirement.
When equipment has simultaneous transmissions in adjacent channels, these transmissions may be considered as one
signal with a nominal channel bandwidth of "n" times the individual nominal channel bandwidth where "n" is the
number of adjacent channels. When equipment has simultaneous transmissions in non-adjacent channels, each power
envelope shall be considered separately.
4.2.1.3 Conformance
Conformance tests as defined in clause 5.3.1 shall be carried out and result compared to the limit.
4.2.2 RF output power
4.2.2.1 Definition
The RF output power is defined by the mean Equivalent Isotropically Radiated Power (EIRP) and Total Radiated Power
(TRP) for the equipment during a transmission burst.
4.2.2.2 Limit
The maximum RF output power shall not exceed the applicable limit indicated in table 2. The limit applies to a device
including its antenna assembly. For a smart antenna system, the limit applies to any supported antenna configuration. In
case of multiple (adjacent or non-adjacent) channels the total RF output power of all channels shall be less than or equal
to the applicable limit in table 2.
Table 2: RF output power limit
Maximum power level EIRP Maximum power level TRP Additional conditions
40 dBm 25 dBm
Only fixed outdoor installations with
55 dBm 25 dBm
≥ 30 dB transmit directivity
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12 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
NOTE: Radiated measurements are used in all cases given the use of integral antennas and the lack of suitable
methods for conducted measurements for this type of equipment. As a consequence, the requirement at
antenna port or ports is verified with the test metric of TRP, and the requirement of transmit antenna gain
with the test metric of directivity. See annex E for information regarding the relationship between
conducted power and TRP, and transmit antenna gain and directivity.
4.2.2.3 Conformance
Conformance tests as defined in clause 5.3.2 shall be carried out and results compared to the limits.
4.2.3 Power Spectral Density
4.2.3.1 Definition
The power spectral density is the mean Equivalent Isotropically Radiated Power (EIRP) density during a transmission
burst.
4.2.3.2 Limit
The maximum power spectral density shall not exceed the applicable limit indicated in table 3. The limit applies to a
device including its antenna assembly. For a smart antenna system, the limit applies to any supported antenna
configuration.
Table 3: Power Spectral Density limit
Maximum power spectral density (EIRP0) Additional conditions
23 dBm/MHz
Only fixed outdoor installations with
38 dBm/MHz
≥ 30 dB transmit directivity
4.2.3.3 Conformance
Conformance tests as defined in clause 5.3.3 shall be carried out and result compared to the limit.
4.2.4 Transmitter unwanted emissions
4.2.4.1 Transmitter unwanted emissions in the out-of-band domain
4.2.4.1.1 Definition
Transmitter unwanted emissions in the out-of-band domain are emissions when the equipment is in transmit mode, on
frequencies immediately outside the nominal bandwidth which results from the modulation process but excluding
spurious emissions.
4.2.4.1.2 Limit
The mean power level of transmitter unwanted emissions in the out-of-band domain as measured with a 1 MHz
reference bandwidth shall be less than or equal to the relative limits specified in figure 1 or an absolute TRP level
of -30 dBm, whichever is greater. The abscissa is the ratio of relative frequency (F - f ) to nominal channel bandwidth
C
(BW), where fC is the nominal centre frequency of the transmission.
In case of multiple adjacent channels, the transmit spectrum mask in figure 1 shall apply for the nominal channel
bandwidth of the multiple adjacent channels.
The boundary between the out-of-band domain and spurious emission domain shall be as specified in clause 4.2.4.2.2.
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13 Final draft ETSI EN 303 753 V1.1.0 (2024-03)

Figure 1: Transmit spectral power mask
4.2.4.1.3 Conformance
Conformance tests as defined in clause 5.3.4.1 shall be carried out and result compared to the limit.
4.2.4.2 Transmitter unwanted emissions in the spurious domain
4.2.4.2.1 Definition
Transmitter unwanted emissions in the spurious domain are emissions when the equipment is in transmit mode, on
frequencies below F and above F defined in clause 4.2.4.2.2.
L H
4.2.4.2.2 Limit
The level of unwanted emissions in the spurious domain shall be less than or equal to the limits specified in table 4.
The lower boundary between the spurious domain and the out-of-band domain shall be at frequency
F = min {57 000; f - min(2,5 × nominal channel bandwidth, 1,5 × nominal channel bandwidth + 500)}[MHz]
L C
and the upper boundary between the spurious domain and the out-of-band domain shall be at frequency
F = max {71 000; f + min(2,5 × nominal channel bandwidth, 1,5 × nominal channel bandwidth + 500)}[MHz]
H C
where f is the nominal centre frequency of the transmission and with all notions in units of MHz.
C
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14 Final draft ETSI EN 303 753 V1.1.0 (2024-03)
Table 4: Transmitter unwanted emissions in the spurious domain
Frequency range Emission limit TRP Measurement bandwidth
30 MHz ≤ f < 87,5 MHz -36 dBm 100 kHz
87,5 MHz ≤ f ≤ 118 MHz -54 dBm 100 kHz
118 MHz < f < 174 MHz -36 dBm 100 kHz
174 MHz ≤ f ≤ 230 MHz -54 dBm 100 kHz
230 MHz < f < 470 MHz -36 dBm 100 kHz
470 MHz ≤ f ≤ 694 MHz -54 dBm 100 kHz
694 MHz < f ≤ 1 GHz -36 dBm 100 kHz
1 GHz < f < FL GHz -30 dBm 1 MHz
FH GHz < f ≤ 142 GHz -30 dBm 1 MHz
NOTE: The limits for transmitter unwanted emissions in the spurious domain are based on ERC
Recommendation 74-01 [i.5].
4.2.4.2.3 Conformance
Conformance tests as defined in clause 5.3.4.2 shall be carried out and result compared to the limit.
4.2.5 Receiver spurious emissions
4.2.5.1 Definition
These are unwanted emissions in the spurious domain while the equipment is receiving a transmission.
4.2.5.2 Limit
The level of unwanted emissions in the spurious domain shall be less than or equal to the limits given in table 5.
Table 5: Receiver spurious emissions
Frequency band Emission Limit TRP Measurement bandwidth
30 MHz ≤ f ≤ 1 GHz -36 dBm 100 kHz
1 GHz < f ≤ 142 GHz -30 dBm 1 MHz
NOTE: The limits for receiver unwanted emissions in the spurious domain are based on
ERC Recommendation 74-01 [i.5] for transmitter unwanted emissions for SRD and for
equipment using AAS and beamforming with integrated antennas for which spe
...

ETSI EN 303 753 V1.1.1 (2024-05)

HARMONISED EUROPEAN STANDARD
Wideband Data Transmission Systems (WDTS)
for Mobile and Fixed Radio Equipment
operating in the 57 - 71 GHz band;
Harmonised Standard for access to radio spectrum

2 ETSI EN 303 753 V1.1.1 (2024-05)

Reference
DEN/BRAN-230026
Keywords
60 GHz, access, broadband, radio, SRD
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:
https://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.
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© ETSI 2024.
All rights reserved.
ETSI
3 ETSI EN 303 753 V1.1.1 (2024-05)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 7
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
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 Occupied channel bandwidth . 11
4.2.1.1 Definition . 11
4.2.1.2 Limit . 11
4.2.1.3 Conformance . 11
4.2.2 RF output power . 11
4.2.2.1 Definition . 11
4.2.2.2 Limit . 11
4.2.2.3 Conformance . 12
4.2.3 Power Spectral Density . 12
4.2.3.1 Definition . 12
4.2.3.2 Limit . 12
4.2.3.3 Conformance . 12
4.2.4 Transmitter unwanted emissions . 12
4.2.4.1 Transmitter unwanted emissions in the out-of-band domain . 12
4.2.4.1.1 Definition. 12
4.2.4.1.2 Limit . 12
4.2.4.1.3 Conformance . 13
4.2.4.2 Transmitter unwanted emissions in the spurious domain . 13
4.2.4.2.1 Definition. 13
4.2.4.2.2 Limit . 13
4.2.4.2.3 Conformance . 14
4.2.5 Receiver spurious emissions . 14
4.2.5.1 Definition . 14
4.2.5.2 Limit . 14
4.2.5.3 Conformance . 14
4.2.6 Spectrum sharing mechanisms . 14
4.2.6.0 General . 14
4.2.6.1 Beamforming . 15
4.2.6.1.1 Definition. 15
4.2.6.1.2 Limit . 15
4.2.6.1.3 Conformance . 15
4.2.6.2 Automatic Transmit Power Control and Automatic Link Adaptation . 15
4.2.6.2.1 Definition. 15
4.2.6.2.2 Limit . 15
4.2.6.2.3 Conformance . 15
4.2.7 Receiver sensitivity . 16
4.2.7.1 Definition . 16
4.2.7.2 Performance Criteria . 16
4.2.7.3 Limit . 16
ETSI
4 ETSI EN 303 753 V1.1.1 (2024-05)
4.2.7.4 Conformance . 16
4.2.8 Receiver Adjacent Channel Selectivity. 16
4.2.8.1 Definition . 16
4.2.8.2 Limit . 16
4.2.8.3 Conformance . 16
5 Testing for compliance with technical requirements . 17
5.1 Environmental conditions for testing . 17
5.1.1 General . 17
5.1.2 Normal test conditions . 17
5.1.2.1 Normal temperature and humidity . 17
5.1.2.2 Normal power source . 17
5.1.3 Extreme test conditions . 17
5.2 Interpretation of the measurement results . 17
5.3 Test procedure for the essential radio test suites . 17
5.3.0 General . 17
5.3.0a Product Information . 18
5.3.0b Test modulation, frequency and configuration . 18
5.3.1 Occupied channel bandwidth . 18
5.3.1.1 Test conditions . 18
5.3.1.2 Test method . 19
5.3.2 RF output power . 19
5.3.2.1 Test conditions . 19
5.3.2.2 Test method . 19
5.3.3 Power Spectral Density . 20
5.3.3.1 Test conditions . 20
5.3.3.2 Test method . 20
5.3.4 Transmitter unwanted emissions . 21
5.3.4.1 Transmitter unwanted emissions in the out-of-band domain . 21
5.3.4.1.1 Test conditions . 21
5.3.4.1.2 Test method . 21
5.3.4.2 Transmitter unwanted emissions in spurious domain . 22
5.3.4.2.1 Test conditions . 22
5.3.4.2.2 Test method (general) . 22
5.3.4.2.3 Pre-scan . 22
5.3.4.2.4 Identified frequencies . 23
5.3.5 Receiver spurious emissions . 23
5.3.5.1 Test conditions . 23
5.3.5.2 Test method . 24
5.3.5.2.1 Pre-scan . 24
5.3.5.2.2 Identified emissions . 24
5.3.6 Spectrum sharing mechanism . 25
5.3.6.1 Test conditions . 25
5.3.6.2 Test method (beamforming) . 25
5.3.6.3 Test method (ATPC) . 25
5.3.6.4 Test method (ALA) . 26
5.3.7 Receiver sensitivity . 27
5.3.7.1 Test conditions . 27
5.3.7.2 Test method . 28
5.3.8 Receiver Adjacent Channel Selectivity. 28
5.3.8.1 Test conditions . 28
5.3.8.2 Test method . 28
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 30
Annex B (informative): Maximum measurement uncertainty . 32
Annex C (normative): Test sites and arrangements for radiated measurements . 33
C.1 Test sites . 33
C.1.0 General . 33
C.1.1 Open air test sites . 33
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5 ETSI EN 303 753 V1.1.1 (2024-05)
C.1.2 Anechoic chamber . 34
C.1.2.1 General . 34
C.1.2.2 Description . 34
C.1.2.3 Influence of parasitic reflections . 34
C.1.2.4 Calibration and mode of use . 35
C.2 Test antenna . 36
C.3 Substitution antenna . 37
Annex D (normative): General description of measurement . 38
D.1 Radiated measurements . 38
D.2 Substitution measurement . 39
Annex E (informative): Measurements procedure for verification of maximum power limits. 40
E.0 Radiated metrics and compliance with the harmonised technical conditions . 40
E.1 Metrics for radiated measurements . 40
E.2 TRP estimation . 41
E.2.1 General . 41
E.2.2 Pre-scan . 41
E.2.3 Methods based on spherical grid sampling . 41
E.2.4 Beam-based directions . 42
E.2.5 Peak method . 42
E.2.6 Equal sector with peak average . 42
Annex F (informative): Bibliography . 43
Annex G (informative): Change history . 44
History . 45

ETSI
6 ETSI EN 303 753 V1.1.1 (2024-05)
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 Broadband Radio Access
Networks (BRAN).
The present document has been prepared under the Commission Implementing Decision C(2015) 5376 final [i.1] 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.2].
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.
National transposition dates
Date of adoption of this EN: 20 May 2024
Date of latest announcement of this EN (doa): 31 August 2024
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2025
Date of withdrawal of any conflicting National Standard (dow): 28 February 2026

ETSI
7 ETSI EN 303 753 V1.1.1 (2024-05)
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.
Introduction
Radio equipment operating in the 60 GHz band are capable of supporting data rates of multiple-gigabit per second.
The spectrum usage conditions for this equipment are set in ERC Recommendation 70-03 [i.3], annex 3 frequency
band c2, frequency band c3 and Commission Decision 2019/1345/EU [i.4] bands 75a and 75b.
ETSI
8 ETSI EN 303 753 V1.1.1 (2024-05)
1 Scope
The present document specifies technical characteristics and methods of measurements for Wideband Data
Transmission Systems (WDTS) fixed equipment installations intended for mobile network applications and mobile
equipment operating indoor and outdoor in the 57 GHz to 71 GHz frequency range.
The scope of the present document includes equipment in this frequency range in compliance with ERC
Recommendation 70-03 [i.3], annex 3 frequency band c2, frequency band c3 and Commission
Decision 2019/1345/EU [i.4] bands 75a and 75b.
Radio equipment within the scope of the present document are capable of operating in all or any part of the frequency
bands given in table 1.
Table 1: Radiocommunications service frequency band
Transmit/Receive Radiocommunications service frequency band
Transmit 57 GHz to 71 GHz
Receive 57 GHz to 71 GHz
NOTE: The relationship between the present document and essential requirements of article 3.2 of
Directive 2014/53/EU [i.2] 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.
Not applicable.
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] 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.
ETSI
9 ETSI EN 303 753 V1.1.1 (2024-05)
[i.2] 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.3] ERC Recommendation 70-03 (Tromsø 1997 and subsequent amendments): "Relating to the use of
Short Range Devices (SRD)".
[i.4] Commission Implementing Decision (EU) 2019/1345 of 2 August 2019 amending Decision
2006/771/EC updating harmonised technical conditions in the area of radio spectrum use for
short-range devices.
[i.5] ERC Recommendation 74-01 (Approved 1998 and subsequent amendments): "Unwanted
emissions in the spurious domain".
[i.6] ETSI TS 138 141-2 (V16.10.0): "5G; NR; Base Station (BS) conformance testing; Part 2: Radiated
conformance testing (3GPP TS 38.141-2 version 16.10.0 Release 16)".
[i.7] ECC Report 288 (approved 25 January 2019): "Conditions for the coexistence between Fixed
Service and other envisaged outdoor uses/applications in the 57 - 66 GHz range".
[i.8] ETSI TS 138 521-2 (V17.3.0): "5G; NR; User Equipment (UE) conformance specification; Radio
transmission and reception; Part 2: Range 2 standalone (3GPP TS 38.521-2 version 17.3.0
Release 17)".
[i.9] ETSI TS 138 141-2 (V17.10.0): "5G; NR; Base Station (BS) conformance testing; Part 2: Radiated
conformance testing (3GPP TS 38.141-2 version 17.10.0 Release 17)".
[i.10] ETSI TR 138 903 (V17.2.0): "5G; NR; Derivation of test tolerances and measurement uncertainty
for User Equipment (UE) conformance test cases (3GPP TR 38.903 version 17.2.0 Release 17)".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in Directive 2014/53/EU [i.2] and the following apply:
60 GHz band: frequency range from 57 GHz to 71 GHz
antenna assembly: combination of the antenna (integral or dedicated), its coaxial cable and if applicable, its antenna
connector and associated switching components
NOTE 1: This term (antenna assembly) refers to an antenna connected to one transmit chain.
NOTE 2: The gain of an antenna assembly does not include the additional gain that may result out of beamforming.
beamforming gain: additional (antenna) gain realized by using beamforming techniques in smart antenna systems
NOTE: Beamforming gain as used in the present document does not include the gain of the antenna assembly.
channel separation: minimum separation (in MHz) between the centre frequencies of two adjacent channels in the
channel plan of the radio equipment
integral antenna: antenna designed as a part of the equipment, without the use of an external connector, which cannot
be disconnected from the equipment by a user with the intent to connect another antenna
NOTE 1: In some cases, it may not be possible to remove an integral antenna or expose an antenna connector
without changing the output characteristics of the radio equipment.
NOTE 2: Even with an integral antenna, it might still be possible to separate the antenna from the equipment using
a special tool.
mean power: (transmitted or received) power averaged during the on-time of the signal
ETSI
10 ETSI EN 303 753 V1.1.1 (2024-05)
nominal channel bandwidth: bandwidth assigned to a single channel
NOTE: The nominal channel bandwidth is part of the product information as outlined in clause 5.3.0a.
occupied bandwidth: bandwidth of the signal containing 99 % of the transmitted mean power
NOTE: Both below the lower and above the upper frequency limits, the mean power emitted is equal to 0,5 % of
the total mean power of the emission.
smart antenna system: equipment that combines multiple transmit and/or receive antenna elements with a signal
processing function to increase its radiation and/or reception capabilities
3.2 Symbols
For the purposes of the present document, the following symbols apply:
D directivity
dB decibel
dBc decibels relative to the maximum power spectral density of the transmitted signal
dBi decibels relative to the gain of an isotropic antenna
dBm decibel relative to one milliwatt
dBr decibel relative to a given maximum power level
G gain of the antenna assembly
GHz gigahertz
kHz kilohertz
MHz megahertz
η antenna efficiency
μs microsecond
W watt
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AAS Active Antenna Systems
ACM Adaptive Code and Modulation
ALA Automatic Link Adaptation
ATPC Automatic Transmit Power Control
BW BandWidth
CATR Compact Antenna Test Range
CW Continuous Wave
DC Duty Cycle
EFTA European Free Trade Association
EIRP Equivalent Isotropically Radiated Power
EIRP Equivalent Isotropically Radiated Power spectral density
EUT Equipment Under Test
f nominal centre frequency of the transmission
C
FER Frame Error Rate
MCS Modulation and Coding Scheme
OTA Over The Air
PSD Power Spectral Density
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Devices
TP ThroughPut
TRP Total Radiated Power
UUT Unit Under Test
WDTS Wideband Data Transmission Systems
ETSI
11 ETSI EN 303 753 V1.1.1 (2024-05)
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use. The equipment shall comply with all the technical
requirements of the present document at all times when operating within the boundary limits of the operational
environmental profile defined by its intended use. Conformance tests shall be carried out under environmental
conditions as defined in clause 5.1.
4.2 Conformance requirements
4.2.1 Occupied channel bandwidth
4.2.1.1 Definition
The occupied channel bandwidth is the bandwidth containing 99 % of the power of the signal.
4.2.1.2 Limit
The occupied channel bandwidth shall be less than the nominal channel bandwidth for any transmission. The device
shall support a mode of transmission with a necessary bandwidth at least 70 % of the nominal channel bandwidth. In
case of smart antenna systems (devices with multiple transmit chains) each of the transmit chains shall meet this
requirement.
When equipment has simultaneous transmissions in adjacent channels, these transmissions may be considered as one
signal with a nominal channel bandwidth of "n" times the individual nominal channel bandwidth where "n" is the
number of adjacent channels. When equipment has simultaneous transmissions in non-adjacent channels, each power
envelope shall be considered separately.
4.2.1.3 Conformance
Conformance tests as defined in clause 5.3.1 shall be carried out and result compared to the limit.
4.2.2 RF output power
4.2.2.1 Definition
The RF output power is defined by the mean Equivalent Isotropically Radiated Power (EIRP) and Total Radiated Power
(TRP) for the equipment during a transmission burst.
4.2.2.2 Limit
The maximum RF output power shall not exceed the applicable limit indicated in table 2. The limit applies to a device
including its antenna assembly. For a smart antenna system, the limit applies to any supported antenna configuration. In
case of multiple (adjacent or non-adjacent) channels the total RF output power of all channels shall be less than or equal
to the applicable limit in table 2.
Table 2: RF output power limit
Maximum power level EIRP Maximum power level TRP Additional conditions
40 dBm 25 dBm
Only fixed outdoor installations with
55 dBm 25 dBm
≥ 30 dB transmit directivity
ETSI
12 ETSI EN 303 753 V1.1.1 (2024-05)
NOTE: Radiated measurements are used in all cases given the use of integral antennas and the lack of suitable
methods for conducted measurements for this type of equipment. As a consequence, the requirement at
antenna port or ports is verified with the test metric of TRP, and the requirement of transmit antenna gain
with the test metric of directivity. See annex E for information regarding the relationship between
conducted power and TRP, and transmit antenna gain and directivity.
4.2.2.3 Conformance
Conformance tests as defined in clause 5.3.2 shall be carried out and results compared to the limits.
4.2.3 Power Spectral Density
4.2.3.1 Definition
The power spectral density is the mean Equivalent Isotropically Radiated Power (EIRP) density during a transmission
burst.
4.2.3.2 Limit
The maximum power spectral density shall not exceed the applicable limit indicated in table 3. The limit applies to a
device including its antenna assembly. For a smart antenna system, the limit applies to any supported antenna
configuration.
Table 3: Power Spectral Density limit
Maximum power spectral density (EIRP0) Additional conditions
23 dBm/MHz
Only fixed outdoor installations with
38 dBm/MHz
≥ 30 dB transmit directivity
4.2.3.3 Conformance
Conformance tests as defined in clause 5.3.3 shall be carried out and result compared to the limit.
4.2.4 Transmitter unwanted emissions
4.2.4.1 Transmitter unwanted emissions in the out-of-band domain
4.2.4.1.1 Definition
Transmitter unwanted emissions in the out-of-band domain are emissions when the equipment is in transmit mode, on
frequencies immediately outside the nominal bandwidth which results from the modulation process but excluding
spurious emissions.
4.2.4.1.2 Limit
The mean power level of transmitter unwanted emissions in the out-of-band domain as measured with a 1 MHz
reference bandwidth shall be less than or equal to the relative limits specified in figure 1 or an absolute TRP level
of -30 dBm, whichever is greater. The abscissa is the ratio of relative frequency (F - f ) to nominal channel bandwidth
C
(BW), where f is the nominal centre frequency of the transmission.
C
In case of multiple adjacent channels, the transmit spectrum mask in figure 1 shall apply for the nominal channel
bandwidth of the multiple adjacent channels.
The boundary between the out-of-band domain and spurious emission domain shall be as specified in clause 4.2.4.2.2.
ETSI
13 ETSI EN 303 753 V1.1.1 (2024-05)

Figure 1: Transmit spectral power mask
4.2.4.1.3 Conformance
Conformance tests as defined in clause 5.3.4.1 shall be carried out and result compared to the limit.
4.2.4.2 Transmitter unwanted emissions in the spurious domain
4.2.4.2.1 Definition
Transmitter unwanted emissions in the spurious domain are emissions when the equipment is in transmit mode, on
frequencies below F and above F defined in clause 4.2.4.2.2.
L H
4.2.4.2.2 Limit
The level of unwanted emissions in the spurious domain shall be less than or equal to the limits specified in table 4.
The lower boundary between the spurious domain and the out-of-band domain shall be at frequency
F = min {57 000; f - min(2,5 × nominal channel bandwidth, 1,5 × nominal channel bandwidth + 500)}[MHz]
L C
and the upper boundary between the spurious domain and the out-of-band domain shall be at frequency
F = max {71 000; f + min(2,5 × nominal channel bandwidth, 1,5 × nominal channel bandwidth + 500)}[MHz]
H C
where f is the nominal centre frequency of the transmission and with all notions in units of MHz.
C
ETSI
14 ETSI EN 303 753 V1.1.1 (2024-05)
Table 4: Transmitter unwanted emissions in the spurious domain
Frequency range Emission limit TRP Measurement bandwidth
30 MHz ≤ f < 87,5 MHz -36 dBm 100 kHz
87,5 MHz ≤ f ≤ 118 MHz -54 dBm 100 kHz
118 MHz < f < 174 MHz -36 dBm 100 kHz
174 MHz ≤ f ≤ 230 MHz -54 dBm 100 kHz
230 MHz < f < 470 MHz -36 dBm 100 kHz
470 MHz ≤ f ≤ 694 MHz -54 dBm 100 kHz
694 MHz < f ≤ 1 GHz -36 dBm 100 kHz
1 GHz < f < FL GHz -30 dBm 1 MHz
FH GHz < f ≤ 142 GHz -30 dBm 1 MHz
NOTE: The limits for transmitter unwanted emissions in the spurious domain are based on ERC
Recommendation 74-01 [i.5].
4.2.4.2.3 Conformance
Conformance tests as defined in clause 5.3.4.2 shall be carried out and result compared to the limit.
4.2.5 Receiver spurious emissions
4.2.5.1 Definition
These are unwanted emissions in the spurious domain while the equipment is receiving a transmission.
4.2.5.2 Limit
The level of unwanted emissions in the spurious domain shall be less than or equal to the limits given in table 5.
Table 5: Receiver spurious emissions
Frequency band Emission Limit TRP Measurement bandwidth
30 MHz ≤ f ≤ 1 GHz -36 dBm 100 kHz
1 GHz < f ≤ 142 GHz -30 dBm 1 MHz
NOTE: The limits for receiver unwanted emissions in the spurious domain are based on
ERC Recommendation 74-01 [i.5] for transmitter unwanted emissions for SRD and for
equipment using AAS and beamforming with integrated antennas for which specific limits for
receiver spurious emissions are not defined, and the same limits apply separately for the
transmitting and receiving phases of operation (see ERC Recommendation 74-01 [i.5], table 6).
...

SLOVENSKI STANDARD
01-oktober-2024
Širokopasovni sistemi za prenos podatkov (WDTS) za mobilno in fiksno radijsko
opremo, ki delujejo v pasu od 57 GHz do 71 GHz - Harmonizirani standard za
dostop do radijskega spektra
Wideband Data Transmission Systems (WDTS) for Mobile and Fixed Radio Equipment
operating in the 57 - 71 GHz band - Harmonised Standard for access to radio spectrum
Ta slovenski standard je istoveten z: ETSI EN 303 753 V1.1.1 (2024-05)
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI EN 303 753 V1.1.1 (2024-05)

HARMONISED EUROPEAN STANDARD
Wideband Data Transmission Systems (WDTS)
for Mobile and Fixed Radio Equipment
operating in the 57 - 71 GHz band;
Harmonised Standard for access to radio spectrum

2 ETSI EN 303 753 V1.1.1 (2024-05)

Reference
DEN/BRAN-230026
Keywords
60 GHz, access, broadband, radio, SRD
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

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The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
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No recommendation as to products and services or vendors is made or should be implied.
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ETSI
3 ETSI EN 303 753 V1.1.1 (2024-05)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 7
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
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 Occupied channel bandwidth . 11
4.2.1.1 Definition . 11
4.2.1.2 Limit . 11
4.2.1.3 Conformance . 11
4.2.2 RF output power . 11
4.2.2.1 Definition . 11
4.2.2.2 Limit . 11
4.2.2.3 Conformance . 12
4.2.3 Power Spectral Density . 12
4.2.3.1 Definition . 12
4.2.3.2 Limit . 12
4.2.3.3 Conformance . 12
4.2.4 Transmitter unwanted emissions . 12
4.2.4.1 Transmitter unwanted emissions in the out-of-band domain . 12
4.2.4.1.1 Definition. 12
4.2.4.1.2 Limit . 12
4.2.4.1.3 Conformance . 13
4.2.4.2 Transmitter unwanted emissions in the spurious domain . 13
4.2.4.2.1 Definition. 13
4.2.4.2.2 Limit . 13
4.2.4.2.3 Conformance . 14
4.2.5 Receiver spurious emissions . 14
4.2.5.1 Definition . 14
4.2.5.2 Limit . 14
4.2.5.3 Conformance . 14
4.2.6 Spectrum sharing mechanisms . 14
4.2.6.0 General . 14
4.2.6.1 Beamforming . 15
4.2.6.1.1 Definition. 15
4.2.6.1.2 Limit . 15
4.2.6.1.3 Conformance . 15
4.2.6.2 Automatic Transmit Power Control and Automatic Link Adaptation . 15
4.2.6.2.1 Definition. 15
4.2.6.2.2 Limit . 15
4.2.6.2.3 Conformance . 15
4.2.7 Receiver sensitivity . 16
4.2.7.1 Definition . 16
4.2.7.2 Performance Criteria . 16
4.2.7.3 Limit . 16
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4 ETSI EN 303 753 V1.1.1 (2024-05)
4.2.7.4 Conformance . 16
4.2.8 Receiver Adjacent Channel Selectivity. 16
4.2.8.1 Definition . 16
4.2.8.2 Limit . 16
4.2.8.3 Conformance . 16
5 Testing for compliance with technical requirements . 17
5.1 Environmental conditions for testing . 17
5.1.1 General . 17
5.1.2 Normal test conditions . 17
5.1.2.1 Normal temperature and humidity . 17
5.1.2.2 Normal power source . 17
5.1.3 Extreme test conditions . 17
5.2 Interpretation of the measurement results . 17
5.3 Test procedure for the essential radio test suites . 17
5.3.0 General . 17
5.3.0a Product Information . 18
5.3.0b Test modulation, frequency and configuration . 18
5.3.1 Occupied channel bandwidth . 18
5.3.1.1 Test conditions . 18
5.3.1.2 Test method . 19
5.3.2 RF output power . 19
5.3.2.1 Test conditions . 19
5.3.2.2 Test method . 19
5.3.3 Power Spectral Density . 20
5.3.3.1 Test conditions . 20
5.3.3.2 Test method . 20
5.3.4 Transmitter unwanted emissions . 21
5.3.4.1 Transmitter unwanted emissions in the out-of-band domain . 21
5.3.4.1.1 Test conditions . 21
5.3.4.1.2 Test method . 21
5.3.4.2 Transmitter unwanted emissions in spurious domain . 22
5.3.4.2.1 Test conditions . 22
5.3.4.2.2 Test method (general) . 22
5.3.4.2.3 Pre-scan . 22
5.3.4.2.4 Identified frequencies . 23
5.3.5 Receiver spurious emissions . 23
5.3.5.1 Test conditions . 23
5.3.5.2 Test method . 24
5.3.5.2.1 Pre-scan . 24
5.3.5.2.2 Identified emissions . 24
5.3.6 Spectrum sharing mechanism . 25
5.3.6.1 Test conditions . 25
5.3.6.2 Test method (beamforming) . 25
5.3.6.3 Test method (ATPC) . 25
5.3.6.4 Test method (ALA) . 26
5.3.7 Receiver sensitivity . 27
5.3.7.1 Test conditions . 27
5.3.7.2 Test method . 28
5.3.8 Receiver Adjacent Channel Selectivity. 28
5.3.8.1 Test conditions . 28
5.3.8.2 Test method . 28
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 30
Annex B (informative): Maximum measurement uncertainty . 32
Annex C (normative): Test sites and arrangements for radiated measurements . 33
C.1 Test sites . 33
C.1.0 General . 33
C.1.1 Open air test sites . 33
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5 ETSI EN 303 753 V1.1.1 (2024-05)
C.1.2 Anechoic chamber . 34
C.1.2.1 General . 34
C.1.2.2 Description . 34
C.1.2.3 Influence of parasitic reflections . 34
C.1.2.4 Calibration and mode of use . 35
C.2 Test antenna . 36
C.3 Substitution antenna . 37
Annex D (normative): General description of measurement . 38
D.1 Radiated measurements . 38
D.2 Substitution measurement . 39
Annex E (informative): Measurements procedure for verification of maximum power limits. 40
E.0 Radiated metrics and compliance with the harmonised technical conditions . 40
E.1 Metrics for radiated measurements . 40
E.2 TRP estimation . 41
E.2.1 General . 41
E.2.2 Pre-scan . 41
E.2.3 Methods based on spherical grid sampling . 41
E.2.4 Beam-based directions . 42
E.2.5 Peak method . 42
E.2.6 Equal sector with peak average . 42
Annex F (informative): Bibliography . 43
Annex G (informative): Change history . 44
History . 45

ETSI
6 ETSI EN 303 753 V1.1.1 (2024-05)
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 Broadband Radio Access
Networks (BRAN).
The present document has been prepared under the Commission Implementing Decision C(2015) 5376 final [i.1] 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.2].
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.
National transposition dates
Date of adoption of this EN: 20 May 2024
Date of latest announcement of this EN (doa): 31 August 2024
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2025
Date of withdrawal of any conflicting National Standard (dow): 28 February 2026

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7 ETSI EN 303 753 V1.1.1 (2024-05)
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.
Introduction
Radio equipment operating in the 60 GHz band are capable of supporting data rates of multiple-gigabit per second.
The spectrum usage conditions for this equipment are set in ERC Recommendation 70-03 [i.3], annex 3 frequency
band c2, frequency band c3 and Commission Decision 2019/1345/EU [i.4] bands 75a and 75b.
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8 ETSI EN 303 753 V1.1.1 (2024-05)
1 Scope
The present document specifies technical characteristics and methods of measurements for Wideband Data
Transmission Systems (WDTS) fixed equipment installations intended for mobile network applications and mobile
equipment operating indoor and outdoor in the 57 GHz to 71 GHz frequency range.
The scope of the present document includes equipment in this frequency range in compliance with ERC
Recommendation 70-03 [i.3], annex 3 frequency band c2, frequency band c3 and Commission
Decision 2019/1345/EU [i.4] bands 75a and 75b.
Radio equipment within the scope of the present document are capable of operating in all or any part of the frequency
bands given in table 1.
Table 1: Radiocommunications service frequency band
Transmit/Receive Radiocommunications service frequency band
Transmit 57 GHz to 71 GHz
Receive 57 GHz to 71 GHz
NOTE: The relationship between the present document and essential requirements of article 3.2 of
Directive 2014/53/EU [i.2] 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.
Not applicable.
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] 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.
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9 ETSI EN 303 753 V1.1.1 (2024-05)
[i.2] 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.3] ERC Recommendation 70-03 (Tromsø 1997 and subsequent amendments): "Relating to the use of
Short Range Devices (SRD)".
[i.4] Commission Implementing Decision (EU) 2019/1345 of 2 August 2019 amending Decision
2006/771/EC updating harmonised technical conditions in the area of radio spectrum use for
short-range devices.
[i.5] ERC Recommendation 74-01 (Approved 1998 and subsequent amendments): "Unwanted
emissions in the spurious domain".
[i.6] ETSI TS 138 141-2 (V16.10.0): "5G; NR; Base Station (BS) conformance testing; Part 2: Radiated
conformance testing (3GPP TS 38.141-2 version 16.10.0 Release 16)".
[i.7] ECC Report 288 (approved 25 January 2019): "Conditions for the coexistence between Fixed
Service and other envisaged outdoor uses/applications in the 57 - 66 GHz range".
[i.8] ETSI TS 138 521-2 (V17.3.0): "5G; NR; User Equipment (UE) conformance specification; Radio
transmission and reception; Part 2: Range 2 standalone (3GPP TS 38.521-2 version 17.3.0
Release 17)".
[i.9] ETSI TS 138 141-2 (V17.10.0): "5G; NR; Base Station (BS) conformance testing; Part 2: Radiated
conformance testing (3GPP TS 38.141-2 version 17.10.0 Release 17)".
[i.10] ETSI TR 138 903 (V17.2.0): "5G; NR; Derivation of test tolerances and measurement uncertainty
for User Equipment (UE) conformance test cases (3GPP TR 38.903 version 17.2.0 Release 17)".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in Directive 2014/53/EU [i.2] and the following apply:
60 GHz band: frequency range from 57 GHz to 71 GHz
antenna assembly: combination of the antenna (integral or dedicated), its coaxial cable and if applicable, its antenna
connector and associated switching components
NOTE 1: This term (antenna assembly) refers to an antenna connected to one transmit chain.
NOTE 2: The gain of an antenna assembly does not include the additional gain that may result out of beamforming.
beamforming gain: additional (antenna) gain realized by using beamforming techniques in smart antenna systems
NOTE: Beamforming gain as used in the present document does not include the gain of the antenna assembly.
channel separation: minimum separation (in MHz) between the centre frequencies of two adjacent channels in the
channel plan of the radio equipment
integral antenna: antenna designed as a part of the equipment, without the use of an external connector, which cannot
be disconnected from the equipment by a user with the intent to connect another antenna
NOTE 1: In some cases, it may not be possible to remove an integral antenna or expose an antenna connector
without changing the output characteristics of the radio equipment.
NOTE 2: Even with an integral antenna, it might still be possible to separate the antenna from the equipment using
a special tool.
mean power: (transmitted or received) power averaged during the on-time of the signal
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10 ETSI EN 303 753 V1.1.1 (2024-05)
nominal channel bandwidth: bandwidth assigned to a single channel
NOTE: The nominal channel bandwidth is part of the product information as outlined in clause 5.3.0a.
occupied bandwidth: bandwidth of the signal containing 99 % of the transmitted mean power
NOTE: Both below the lower and above the upper frequency limits, the mean power emitted is equal to 0,5 % of
the total mean power of the emission.
smart antenna system: equipment that combines multiple transmit and/or receive antenna elements with a signal
processing function to increase its radiation and/or reception capabilities
3.2 Symbols
For the purposes of the present document, the following symbols apply:
D directivity
dB decibel
dBc decibels relative to the maximum power spectral density of the transmitted signal
dBi decibels relative to the gain of an isotropic antenna
dBm decibel relative to one milliwatt
dBr decibel relative to a given maximum power level
G gain of the antenna assembly
GHz gigahertz
kHz kilohertz
MHz megahertz
η antenna efficiency
μs microsecond
W watt
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AAS Active Antenna Systems
ACM Adaptive Code and Modulation
ALA Automatic Link Adaptation
ATPC Automatic Transmit Power Control
BW BandWidth
CATR Compact Antenna Test Range
CW Continuous Wave
DC Duty Cycle
EFTA European Free Trade Association
EIRP Equivalent Isotropically Radiated Power
EIRP Equivalent Isotropically Radiated Power spectral density
EUT Equipment Under Test
f nominal centre frequency of the transmission
C
FER Frame Error Rate
MCS Modulation and Coding Scheme
OTA Over The Air
PSD Power Spectral Density
RF Radio Frequency
RMS Root Mean Square
SRD Short Range Devices
TP ThroughPut
TRP Total Radiated Power
UUT Unit Under Test
WDTS Wideband Data Transmission Systems
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11 ETSI EN 303 753 V1.1.1 (2024-05)
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be in accordance with its intended use. The equipment shall comply with all the technical
requirements of the present document at all times when operating within the boundary limits of the operational
environmental profile defined by its intended use. Conformance tests shall be carried out under environmental
conditions as defined in clause 5.1.
4.2 Conformance requirements
4.2.1 Occupied channel bandwidth
4.2.1.1 Definition
The occupied channel bandwidth is the bandwidth containing 99 % of the power of the signal.
4.2.1.2 Limit
The occupied channel bandwidth shall be less than the nominal channel bandwidth for any transmission. The device
shall support a mode of transmission with a necessary bandwidth at least 70 % of the nominal channel bandwidth. In
case of smart antenna systems (devices with multiple transmit chains) each of the transmit chains shall meet this
requirement.
When equipment has simultaneous transmissions in adjacent channels, these transmissions may be considered as one
signal with a nominal channel bandwidth of "n" times the individual nominal channel bandwidth where "n" is the
number of adjacent channels. When equipment has simultaneous transmissions in non-adjacent channels, each power
envelope shall be considered separately.
4.2.1.3 Conformance
Conformance tests as defined in clause 5.3.1 shall be carried out and result compared to the limit.
4.2.2 RF output power
4.2.2.1 Definition
The RF output power is defined by the mean Equivalent Isotropically Radiated Power (EIRP) and Total Radiated Power
(TRP) for the equipment during a transmission burst.
4.2.2.2 Limit
The maximum RF output power shall not exceed the applicable limit indicated in table 2. The limit applies to a device
including its antenna assembly. For a smart antenna system, the limit applies to any supported antenna configuration. In
case of multiple (adjacent or non-adjacent) channels the total RF output power of all channels shall be less than or equal
to the applicable limit in table 2.
Table 2: RF output power limit
Maximum power level EIRP Maximum power level TRP Additional conditions
40 dBm 25 dBm
Only fixed outdoor installations with
55 dBm 25 dBm
≥ 30 dB transmit directivity
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12 ETSI EN 303 753 V1.1.1 (2024-05)
NOTE: Radiated measurements are used in all cases given the use of integral antennas and the lack of suitable
methods for conducted measurements for this type of equipment. As a consequence, the requirement at
antenna port or ports is verified with the test metric of TRP, and the requirement of transmit antenna gain
with the test metric of directivity. See annex E for information regarding the relationship between
conducted power and TRP, and transmit antenna gain and directivity.
4.2.2.3 Conformance
Conformance tests as defined in clause 5.3.2 shall be carried out and results compared to the limits.
4.2.3 Power Spectral Density
4.2.3.1 Definition
The power spectral density is the mean Equivalent Isotropically Radiated Power (EIRP) density during a transmission
burst.
4.2.3.2 Limit
The maximum power spectral density shall not exceed the applicable limit indicated in table 3. The limit applies to a
device including its antenna assembly. For a smart antenna system, the limit applies to any supported antenna
configuration.
Table 3: Power Spectral Density limit
Maximum power spectral density (EIRP0) Additional conditions
23 dBm/MHz
Only fixed outdoor installations with
38 dBm/MHz
≥ 30 dB transmit directivity
4.2.3.3 Conformance
Conformance tests as defined in clause 5.3.3 shall be carried out and result compared to the limit.
4.2.4 Transmitter unwanted emissions
4.2.4.1 Transmitter unwanted emissions in the out-of-band domain
4.2.4.1.1 Definition
Transmitter unwanted emissions in the out-of-band domain are emissions when the equipment is in transmit mode, on
frequencies immediately outside the nominal bandwidth which results from the modulation process but excluding
spurious emissions.
4.2.4.1.2 Limit
The mean power level of transmitter unwanted emissions in the out-of-band domain as measured with a 1 MHz
reference bandwidth shall be less than or equal to the relative limits specified in figure 1 or an absolute TRP level
of -30 dBm, whichever is greater. The abscissa is the ratio of relative frequency (F - f ) to nominal channel bandwidth
C
(BW), where f is the nominal centre frequency of the transmission.
C
In case of multiple adjacent channels, the transmit spectrum mask in figure 1 shall apply for the nominal channel
bandwidth of the multiple adjacent channels.
The boundary between the out-of-band domain and spurious emission domain shall be as specified in clause 4.2.4.2.2.
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13 ETSI EN 303 753 V1.1.1 (2024-05)

Figure 1: Transmit spectral power mask
4.2.4.1.3 Conformance
Conformance tests as defined in clause 5.3.4.1 shall be carried out and result compared to the limit.
4.2.4.2 Transmitter unwanted emissions in the spurious domain
4.2.4.2.1 Definition
Transmitter unwanted emissions in the spurious domain are emissions when the equipment is in transmit mode, on
frequencies below F and above F defined in clause 4.2.4.2.2.
L H
4.2.4.2.2 Limit
The level of unwanted emissions in the spurious domain shall be less than or equal to the limits specified in table 4.
The lower boundary between the spurious domain and the out-of-band domain shall be at frequency
F = min {57 000; f - min(2,5 × nominal channel bandwidth, 1,5 × nominal channel bandwidth + 500)}[MHz]
L C
and the upper boundary between the spurious domain and the out-of-band domain shall be at frequency
F = max {71 000; f + min(2,5 × nominal channel bandwidth, 1,5 × nominal channel bandwidth + 500)}[MHz]
H C
where f is the nominal centre frequency of the transmission and with all notions in units of MHz.
C
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14 ETSI EN 303 753 V1.1.1 (2024-05)
Table 4: Transmitter unwanted emissions in the spurious domain
Frequency range Emission limit TRP Measurement bandwidth
30 MHz ≤ f < 87,5 MHz -36 dBm 100 kHz
87,5 MHz ≤ f ≤ 118 MHz -54 dBm 100 kHz
118 MHz < f < 174 MHz -36 dBm 100 kHz
174 MHz ≤ f ≤ 230 MHz -54 dBm 100 kHz
230 MHz < f < 470 MHz -36 dBm 100 kHz
470 MHz ≤ f ≤ 694 MHz -54 dBm 10
...