ETSI EN 302 288-1 V1.1.1 (2005-01)

SLOVENSKI STANDARD
SIST EN 302 288-1 V1.1.1:2006
01-marec-2006
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Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices;
Road Transport and Traffic Telematics (RTTT); Short range radar equipment operating in
the 24 GHz range; Part 1: Technical requirements and methods of measurement
Ta slovenski standard je istoveten z: EN 302 288-1 Version 1.1.1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
35.240.60 Uporabniške rešitve IT v IT applications in transport
transportu in trgovini and trade
SIST EN 302 288-1 V1.1.1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 302 288-1 V1.1.1:2006

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SIST EN 302 288-1 V1.1.1:2006

ETSI EN 302 288-1 V1.1.1 (2005-01)
European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices;
Road Transport and Traffic Telematics (RTTT);
Short range radar equipment operating in the 24 GHz range;
Part 1: Technical requirements and methods of measurement

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SIST EN 302 288-1 V1.1.1:2006
 2 ETSI EN 302 288-1 V1.1.1 (2005-01)



Reference
DEN/ERM-TG31B-002-1
Keywords
radar, radio, testing, SRD, RTTT
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SIST EN 302 288-1 V1.1.1:2006
 3 ETSI EN 302 288-1 V1.1.1 (2005-01)
Contents
Intellectual Property Rights.6
Foreword.6
1 Scope.7
2 References.7
3 Definitions, symbols and abbreviations .8
3.1 Definitions.8
3.2 Symbols.10
3.3 Abbreviations.10
4 Technical requirements specifications.11
4.1 Presentation of equipment for testing purposes.11
4.1.1 Choice of model for testing .11
4.2 Mechanical and electrical design.11
4.3 Auxiliary test equipment .11
4.4 Interpretation of the measurement results .12
5 Test conditions, power sources and ambient temperatures .12
5.1 Normal and extreme test conditions .12
5.2 External test power source.12
5.3 Normal test conditions.12
5.3.1 Normal temperature and humidity.12
5.3.2 Normal test power source .12
5.3.2.1 Mains voltage.13
5.3.2.2 Other power sources.13
5.4 Extreme test conditions .13
5.4.1 Extreme temperatures.13
5.4.1.1 Procedure for tests at extreme temperatures.13
5.4.1.2 Extreme temperature ranges.13
5.4.2 Extreme test source voltages.13
5.4.2.1 Mains voltage.13
5.4.2.2 Other power sources.13
6 General conditions.13
6.1 Test fixture.14
6.1.1 Requirements.14
6.1.2 Calibration.14
6.1.3 General requirements for RF cables.16
6.1.4 Shielded anechoic chamber.17
7 Methods of measurement and limits for transmitter parameters .18
7.1 Methods of measurement and limits for transmitters in the 22,000 GHz to 26,625 GHz band.18
7.1.1 Permitted range of operating frequencies .18
7.1.1.1 Definition.18
7.1.1.2 Method of measurement.18
7.1.1.3 Limits.19
7.1.2 Maximum radiated average power density (e.i.r.p.) .19
7.1.2.1 Definition.19
7.1.2.2 Method of measurement.19
7.1.2.3 Limits.21
7.1.3 Maximum radiated peak power density (e.i.r.p.) .21
7.1.3.1 Definition.21
7.1.3.2 Method of measurement.21
7.1.3.3 Standard procedure and setup extensions.22
7.1.3.4 Limits.22
7.1.4 Methods of measurement and limits for emissions in the 24,050 GHz to 24,250 GHz band .23
7.1.4.1 Equivalent isotropically radiated power (e.i.r.p.).23
ETSI

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SIST EN 302 288-1 V1.1.1:2006
 4 ETSI EN 302 288-1 V1.1.1 (2005-01)
7.1.4.1.1 Definition.23
7.1.4.1.2 Method of measurement.23
7.1.4.1.2.1 Transmitters with a -6 dB bandwidth up to 20 MHz.23
7.1.4.1.3 Limits.25
7.1.4.2 Permitted range of operating frequencies.25
7.1.4.2.1 Definition.25
7.1.4.2.2 Method of measurement for equipment not using FH modulation.25
7.1.4.2.3 Method of measurement for equipment using pulsed FH modulation.26
7.1.4.2.4 Limit.26
7.1.5 Vertical plane transmitter emissions in the 23,6 GHz to 24 GHz range .27
7.1.5.1 Definition.27
7.1.5.2 Measurement procedure.27
7.1.5.3 Vertical emission limits in the 23,6 GHz to 24,0 GHz range.27
7.2 Radiated spurious and out-of-band emissions .27
7.2.1 Definition.27
7.2.2 Measuring receiver.28
7.2.3 Method of measurement for radiated spurious or out-of-band emissions.28
7.2.4 Limits.29
8 Methods of measurement and limits for receiver parameters.29
8.1 Receiver spurious emissions.29
8.1.1 Definition.29
8.1.2 Method of measurement - radiated spurious emissions .29
8.1.3 Limit.30
9 Measurement uncertainty.30
Annex A (normative): Radiated measurements .31
A.1 Test sites and general arrangements for measurements involving the use of radiated fields.31
A.2 Guidance on the use of radiation test sites .31
A.2.1 Substitution antenna.31
A.3 Indoor test site using a fully anechoic RF chamber .31
A.3.1 Example of the construction of a shielded anechoic chamber.31
A.3.2 Influence of parasitic reflections in anechoic chambers.33
A.3.3 Calibration of the shielded RF anechoic chamber.33
Annex B (normative): General description of measurement methods.34
B.1 Radiated measurements.34
B.2 Performance requirements for preamplifier and horn antenna.35
B.3 Measurement of the residual carrier.35
Annex C (informative): Example of modulation schemes.36
C.1 Pseudo Noise Pulse Position Modulation (PN PPM).36
C.1.1 Definition.36
C.1.2 Typical operation parameters .37
C.2 Pulsed FH (Pulsed Frequency hopping).37
C.2.1 Definition.37
C.2.2 Typical operation parameters .38
C.2.3 Additional requirements for pulsed FH equipment measurement .38
C.2.3.1 Pulsed FH modulation.38
C.2.3.2 Measurement requirements.38
C.3 PN-2-PSK (Pseudo noise binary coded phase shift keying).39
C.3.1 Definition.39
C.3.2 Typical operation parameters .40
Annex D (normative): Installation requirements of 24 GHz Short Range Radar (SRR)
systems .41
ETSI

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SIST EN 302 288-1 V1.1.1:2006
 5 ETSI EN 302 288-1 V1.1.1 (2005-01)
Annex E (informative): Conversion of power density to e.i.r.p.42
E.1 Assumptions.42
E.2 Example.42
Annex F (informative): Bibliography.43
History .44

ETSI

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SIST EN 302 288-1 V1.1.1:2006
 6 ETSI EN 302 288-1 V1.1.1 (2005-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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 (http://webapp.etsi.org/IPR/home.asp).
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.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
For non EU countries the present document may be used for regulatory (Type Approval) purposes.
Equipment compliant with the present document is intended for fitment into road vehicles, therefore it is subject to
automotive EMC type approval and has to comply with Directive 95/54/EC [8]. For use on vehicles outside the scope of
Directive 95/54/EC [8] compliance with an EMC directive/standard appropriate for that use is required.
The present document is part 1 of a multi-part deliverable covering Electromagnetic compatibility and Radio spectrum
Matters (ERM); Short Range Devices, Road Transport and Traffic Telematics (RTTT); Short range radar equipment
operating in the 24 GHz range, as identified below:
Part 1: "Technical requirements and methods of measurement";
Part 2: "Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive".

National transposition dates
Date of adoption of this EN: 21 January 2005
Date of latest announcement of this EN (doa): 30 April 2005
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 October 2005
Date of withdrawal of any conflicting National Standard (dow): 31 October 2005

ETSI

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SIST EN 302 288-1 V1.1.1:2006
 7 ETSI EN 302 288-1 V1.1.1 (2005-01)
1 Scope
The present document specifies the technical requirements and methods of measurement for Short Range Devices
(SRD) working as broadband devices with at least 500 MHz bandwidth in the 22,000 GHz to 26,625 GHz frequency
range intended for Road Transport and Traffic Telematics (RTTT) applications, such as automotive 24 GHz
Short Range Radar (SRR) for e.g. obstacle detection, stop and go, blind spot detection, parking aid, backup aid,
precrash and other automotive applications.
The present document covers transmitters intended to operate in a temporary frequency designation as defined in a
forthcoming decision of CEPT/ECC. The application is also subject to a forthcoming EU Commission decision on
24 GHz SRR. The present document applies to:
a) Transmitters in the range from 22,000 GHz to 26,625 GHz operating as broadband devices over the specific
bandwidth defined for the individual devices.
b) Receivers operating in the range from 22,000 GHz to 26,625 GHz.
c) Integrated transceivers.
The present document contains the technical characteristics and test methods for short range radar equipment fitted with
integral antennas operating in the 24 GHz range.
The present document does not necessarily include all the characteristics which may be required by a user, nor does it
necessarily represent the optimum performance achievable.
The present document covers short range radar mobile applications in the 24 GHz range. It covers integrated
transceivers and separate transmit/receive modules.
The present document covers only 24 GHz SRR equipment for road vehicles.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] ERC/REC 70-03: "Relating to the use of Short Range Devices (SRD)".
[2] CISPR 16 (parts 1-1, 1-4 and 1-5): "Specifications for radio disturbance and immunity measuring
apparatus and methods; Part 1: Radio disturbance and immunity measuring apparatus".
[3] ERC/REC 01-06: "Procedure for mutual recognition of type testing and type approval for radio
equipment".
[4] ETSI TR 102 273-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 2: Anechoic chamber".
[5] Council Recommendation 1999/519/EC on the limitation of exposure of the general public to
electromagnetic fields O Hz - 300 GHz.
ETSI

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SIST EN 302 288-1 V1.1.1:2006
 8 ETSI EN 302 288-1 V1.1.1 (2005-01)
[6] ETSI EN 300 440-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short
Range Devices (SRD); Radio equipment to be used in the 1 GHz to 40 GHz frequency range;
Part 1: Technical characteristics and test methods".
[7] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics".
[8] Commission Directive 95/54/EC of 31 October 1995 adapting to technical progress Council
Directive 72/245/EEC on the approximation of the laws of the Member States relating to the
suppression of radio interference produced by spark-ignition engines fitted to motor vehicles and
amending Directive 70/156/EEC on the approximation of the laws of the Member States relating
to the type-approval of motor vehicles and their trailers.
[9] ETSI EN 302 288-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short
Range Devices; Road Transport and Traffic Telematics (RTTT); Short range Radar equipment
operating in the 24 GHz range; Part 2: Harmonized EN covering essential requirements of
article 3.2 of the R&TTE Directive".
[10] ERC/REC 74-01: "Spurious Emissions".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
activity factor: actual on-the-air time divided by active session time or actual on-the-air emission time within a given
time window
antenna scan duty factor: ratio of the area of the beam (measured at its -3 dB point) to the total area scanned by the
antenna (as measured at its -3 dB point)
assigned frequency band: frequency band within which the device is authorized to operate
associated antenna: antenna and all its associated components which are designed as an indispensable part of the
equipment
average time: time interval on which a mean measurement is integrated
blanking period: time period where either no waveform or a constant waveform within the 24 GHz SRD band occurs
boresight: axis of the main beam in a directional antenna
channel dwell duty cycle: ratio of the time of uninterrupted continuous transmission within a given frequency channel
to the channel repetition interval
NOTE: Channel dwell time/channel repetition interval.
channel dwell time: accumulated amount of transmission time of uninterrupted continuous transmission within a single
given frequency channel and within one channel repetition interval
duty cycle: the ratio of the total on time of the "message" to the total off-time in any one hour period
NOTE: The device may be triggered either automatically or manually and depending on how the device is
triggered will also depend on whether the duty cycle is fixed or random. The duty cycle is categorized in
4 different duty cycle classes.
Equipment Under Test (EUT): radar sensor including the integrated antenna together with any external antenna
components which affect or influence its performance
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SIST EN 302 288-1 V1.1.1:2006
 9 ETSI EN 302 288-1 V1.1.1 (2005-01)
equivalent isotropically radiated power (e.i.r.p.): total power or power density transmitted, assuming an isotropic
radiator
NOTE: e.i.r.p. is conventionally the product of "power or power density into the antenna" and "antenna gain".
e.i.r.p. is used for both peak or average power and peak or average power density.
equivalent pulse power duration: duration of an ideal rectangular pulse which has the same content of energy
compared with the pulse shape of the EUT with pulsed modulation or on-off gating
2
far field measurements: measurement at a distance "X" of at least 2d /λ , where d is the largest dimension of the
antenna aperture of the EUT
maximum safe level for radiated power density: level which can be transmitted in accordance with the current
recommended safety levels in Council Recommendation 1999/519/EC [5]
on-off gating: methods of transmission with fixed or randomly quiescent period that is much larger than the PRF
operating frequency (operating centre frequency): nominal frequency at which equipment is operated
NOTE: Equipment may be able t
...