ETSI EN 303 883 V1.1.1 (2016-09)
Short Range Devices (SRD) using Ultra Wide Band (UWB); Measurement Techniques
Short Range Devices (SRD) using Ultra Wide Band (UWB); Measurement Techniques
DEN/ERM-TGUWB-125
Naprave kratkega dosega (SRD), ki uporabljajo ultra širok frekvenčni pas (UWB) - Merilne tehnike
Ta dokument povzema razpoložljive informacije možnih merilnih tehnik in postopkov za skladnost meritve različnih formatov signalov ultra širokega frekvenčnega pasa (UWB), da se zagotovi skladnost z omejitvami prenosov iz trenutnih predpisov.
Ta dokument se bo uporabljal kot referenca za obstoječe in prihodnje standarde ETSI, ki obravnavajo tehnologije z ultra širokim frekvenčnim pasom.
General Information
Overview
ETSI EN 303 883 V1.1.1 (2016-09) (identical to ETSI EN 303 883 V1.1.1:2016) defines measurement techniques for Short Range Devices (SRD) using Ultra Wide Band (UWB). The standard summarizes available measurement techniques and procedures for conformance testing of various UWB signal formats so manufacturers and test houses can verify compliance with applicable transmission limits in current regulation. It serves as a reference for existing and future ETSI standards covering UWB technologies.
Key topics and requirements
The document provides comprehensive guidance on UWB measurement techniques, including:
- Scope and terminology: Definitions, symbols and abbreviations for UWB/SRD testing.
- Test conditions and environmental requirements: Normal temperature, humidity and power-supply conditions for reproducible measurements.
- Product information and presentation: Requirements for model selection, multiple operating bandwidths and test presentation.
- Radiated and conducted measurement setups:
- Use of anechoic chambers, chambers with conductive ground planes, and externally prepared radiation test sites.
- Guidance on test antennas, substitution antennas and measuring antennas.
- Calibration and measurement methods:
- Calibrated setups, substitution methods and standard calibration approaches to control measurement uncertainty.
- Essential radio test suites:
- Operating bandwidth characterization.
- Mean Power Spectral Density (PSD) measurements (multiple methods referenced).
- Peak power measurement methods and signal acquisition/post-processing approaches.
- Receiver spurious emissions and other emissions tests.
- Control and safety features:
- Power control, detect-and-avoid mechanisms and duty cycle considerations.
- Measurement interpretation: Treatment of measurement uncertainty, acceptance criteria and reporting.
Practical applications and users
This standard is intended for:
- Product manufacturers developing UWB SRD devices (consumer, industrial, automotive).
- Accredited test laboratories performing conformity testing and certification.
- Regulatory and certification bodies that evaluate compliance with transmission limits.
- R&D and test engineers implementing measurement setups (anechoic chambers, antennas, calibration routines).
Benefits include consistent, repeatable UWB conformance testing, reduced measurement uncertainty, and a harmonized reference for future ETSI standards.
Related standards and keywords
- Related reference: ETSI EN 303 883 V1.1.1 (2016-09).
- SEO-relevant keywords: SRD, UWB, Ultra Wide Band, measurement techniques, conformance testing, ETSI, power spectral density, peak power measurement, radiated measurements, anechoic chamber, calibration, substitution method, receiver spurious emissions.
Frequently Asked Questions
ETSI EN 303 883 V1.1.1 (2016-09) is a standard published by the European Telecommunications Standards Institute (ETSI). Its full title is "Short Range Devices (SRD) using Ultra Wide Band (UWB); Measurement Techniques". This standard covers: DEN/ERM-TGUWB-125
DEN/ERM-TGUWB-125
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Standards Content (Sample)
Draft ETSI EN 303 883 V1.1.0 (2016-02)
EUROPEAN STANDARD
Short Range Devices (SRD) using Ultra Wide Band (UWB);
Measurement Techniques
2 Draft ETSI EN 303 883 V1.1.0 (2016-02)
Reference
DEN/ERM-TGUWB-125
Keywords
SRD, testing, UWB
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3 Draft ETSI EN 303 883 V1.1.0 (2016-02)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
3.2 Symbols . 10
3.3 Abbreviations . 11
4 Overview . 12
4.1 Basic information . 12
4.2 Impulse derived (carrier-less) . 12
4.3 Frequency modulated/carrier-based . 13
5 General Consideration and test requirements . 13
5.1 Overview . 13
5.2 Product information . 14
5.3 Requirements for the test modulation . 15
5.4 Test conditions, power supply and ambient temperatures . 15
5.4.1 Test conditions . 15
5.4.2 Power sources . 15
5.4.2.1 Power sources for stand-alone equipment . 15
5.4.2.2 Power sources for plug-in radio devices . 16
5.4.3 Normal test conditions . 16
5.4.3.1 Normal temperature and humidity . 16
5.4.3.2 Normal power source . 16
5.4.3.2.1 Mains voltage . 16
5.4.3.2.2 Lead-acid battery power sources used on vehicles . 16
5.4.3.2.3 Other power sources . 16
5.5 Choice of equipment for test suites . 16
5.5.1 Choice of model . 16
5.5.2 Presentation. 16
5.5.3 Multiple operating bandwidths . 17
5.6 Testing of host connected equipment and plug-in radio devices . 17
5.6.1 General . 17
5.6.2 The use of a host or test fixture for testing plug-In radio devices . 17
5.7 Interpretation of the measurement results . 17
5.7.1 General points on interpretation of the measurement results . 17
5.7.2 Measurement uncertainty is equal to or less than maximum acceptable uncertainty . 18
5.7.3 Measurement uncertainty is greater than maximum acceptable uncertainty . 18
5.8 Other emissions . 19
6 Test setups and procedures . 19
6.1 Introduction . 19
6.2 Initial Measurement steps . 19
6.3 Radiated measurements . 19
6.3.1 General . 19
6.3.2 Test sites and general arrangements for measurements involving the use of radiated fields . 20
6.3.2.1 General . 20
6.3.2.2 Anechoic chamber . 20
6.3.2.3 Anechoic chamber with a conductive ground plane . 21
6.3.2.4 Test antenna . 22
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4 Draft ETSI EN 303 883 V1.1.0 (2016-02)
6.3.2.5 Substitution antenna . 22
6.3.2.6 Measuring antenna . 22
6.3.3 Guidance on the use of a radiation test site . 23
6.3.3.1 General on guidance on the use of a radiation test site . 23
6.3.3.2 Verification of the test site . 23
6.3.3.3 Preparation of the EUT . 23
6.3.3.4 Power supplies to the EUT . 23
6.3.3.5 Range length . 23
6.3.3.5 Site preparation . 24
6.3.4 Coupling of signals . 24
6.3.4.1 General . 24
6.3.4.2 Data Signals . 24
6.3.5 Standard test methods . 24
6.3.5.1 General information on test methods . 24
6.3.5.2 Calibrated setup . 24
6.3.5.3 Substitution method . 25
6.3.6 Standard calibration method . 26
6.4 Conducted measurements . 28
7 Test procedures for essential radio test suites . 29
7.1 General . 29
7.2 Definitions . 29
7.2.1 Introduction. 29
7.2.2 Operating bandwidth. 29
7.2.3 Maximum mean power spectral density . 29
7.2.4 Maximum peak power . 29
7.2.5 Emissions . 29
7.2.6 Receiver spurious emissions . 30
7.2.7 Power control . 30
7.2.8 Detect and avoid . 30
7.2.9 Duty Cycle . 30
7.3 Method of measurements of the UE . 31
7.3.1 Introduction. 31
7.3.2 Emission Measurements steps . 31
7.3.2.1 First step . 31
7.3.2.2 Second step . 31
7.4 Detailed measurement procedure . 32
7.4.1 Introduction. 32
7.4.2 Operating bandwidth. 32
7.4.3 Mean power spectral density measurements . 33
7.4.3.1 General on mean power spectral density measurement. 33
7.4.3.2 Mean power spectral density measurement: Method 1 . 34
7.4.3.3 Mean power spectral density measurement: Method 2 . 35
7.4.3.4 Mean power spectral density measurement: Method 3 . 36
7.4.4 Peak power measurements . 37
7.4.4.1 General on peak power measurement . 37
7.4.4.2 Peak power measurement: Method 1 . 38
7.4.4.3 Peak power measurement: Method 2 . 39
7.4.4.4 Peak power measurement: Method 3 . 40
7.4.4.4.1 Description . 40
7.4.4.4.2 Signal acquisition . 41
7.4.4.4.3 Post-Processing. 41
7.4.4.4.4 Limit . 42
7.4.5 Receiver spurious emissions . 42
7.4.6 Power control . 43
7.4.7 Test procedures for detect and avoid mechanisms . 43
7.4.7.1 Introduction . 43
7.4.7.2 Initial start-up test . 45
7.4.7.2.1 Start up precedure . 45
7.4.7.2.2 Test without a victim test signal during the Minimum Initial Channel Availability Check
Time, T . 45
avail_time_min
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5 Draft ETSI EN 303 883 V1.1.0 (2016-02)
7.4.7.2.3 Test with a victim test signal at the beginning of the Minimum Initial Channel Availability
Check Time, T . 46
avail_time_min
7.4.7.2.4 Test with a victim test signal at the end of the Minimum Initial Channel Availability Check
Time, T . 48
avail_time_min
7.4.7.3 In-operation test . 49
7.4.7.3.1 General points for In-operation test . 49
7.4.7.3.2 In-operation test procedure . 50
7.4.8 Test procedures for Low Duty Cycle . 51
7.4.8.1 Test procedure for T /T , Method 1 . 51
on off
7.4.8.2 Test procedure for T /T , Method 2 . 53
on off
7.4.8.2.1 Description . 53
7.4.8.2.2 General test setup . 53
7.4.8.2.3 Time domain procedure for DC measurement . 53
7.5 Limits . 55
7.6 Maximum allowable measurement uncertainty . 55
Annex A (normative): Frequency domain measurements using spectrum analyser . 56
A.1 Spectrum analyser internal operation . 56
A.2 UWB power measurement procedures . 57
A.2.1 Introduction . 57
A.2.2 Maximum mean power spectral density . 57
A.2.2.1 General . 57
A.2.2.2 Average mean power: Finding highest . 58
A.2.3 Maximum peak power (e.i.r.p.) measurement procedure . 59
A.3 Calculation of peak limit for 3 MHz measurement bandwidth . 61
A.4 Detailed Information to standard test methods . 62
A.4.1 Spherical scan with automatic test antenna placement . 62
A.4.1.1 General . 62
A.4.1.2 Calibrated setup . 63
A.4.1.3 Substitution method . 63
A.4.1.4 Spherical scan with rotating device . 64
A.4.1.4.1 General . 64
A.4.1.4.2 Calibrated setup . 64
A.4.1.4.3 Substitution method . 65
A.4.1.5 Spherical scan other methods. 65
Annex B (informative): Measurement antenna and preamplifier specifications . 66
Annex C (informative): Bibliography . 67
History . 70
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6 Draft ETSI EN 303 883 V1.1.0 (2016-02)
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 (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.
Foreword
This draft 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.
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): 6 months after doa
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
Ultra Wide Band (UWB) radio technology enables a new generation of high-speed data devices for short-range
communication purposes as well as location tracking and Sensor devices and opens new markets with a variety of
innovative applications.
UWB devices may form an integral part of other portable electronic equipment such as future generation cellular
phones or laptops equipped with UWB enabled short-range air interfaces.
In addition, UWB devices with an operating bandwidth of several hundreds of MHz up to several GHz allow tens of
centimetre-level accuracy real time localization and positioning even in the presence of severe multipath effects caused
by walls, furniture or any other harsh radio propagation environments.
Based on the broad variety of different applications and the broad possible frequency range of operation the number of
possible deployed physical signal formats can be very large. The existing range of physical signal and modulation
formats range from traditional carrier based systems like OFDM over spread spectrum based system to carrier less
systems based on base band pulses. The frequency regulation on the other side only defines a single set of transmission
limits and values, which have to be fulfilled by all systems under the UWB regulation. Furthermore, the very high
channel bandwidth of a UWB signal gives a specific challenge to the needed measurement setup and the procedures.
Existing measurement methods need to be extended and new possible techniques should be described in the present
document.
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7 Draft ETSI EN 303 883 V1.1.0 (2016-02)
1 Scope
The present document summarizes the available information of possible measurement techniques and procedures for the
conformance measurement of various UWB signal formats in order to comply with the given transmission limits given
in the current regulation.
The present document will be used as a reference for existing and future ETSI standards covering UWB technologies.
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
http://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] ETSI TR 100 028 (V1.4.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[2] ANSI C63.5 (2006): "American National Standard for Calibration of Antennas Used for Radiated
Emission Measurements in Electro Magnetic Interference".
[3] ETSI TS 102 321 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Normalized Site Attenuation (NSA) and validation of a fully lined anechoic chamber up to
40 GHz".
[4] ETSI TS 102 754 (V1.2.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Short Range Devices (SRD); Technical characteristics of Detect-And-Avoid (DAA) mitigation
techniques for SRD equipment using Ultra Wideband (UWB) technology".
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] ETSI TR 103 181-1: "Short Range Devices (SRD) using Ultra Wide Band (UWB); Technical
Report Part 1: UWB signal characteristics and overview CEPT/ECC and EC regulation".
[i.2] ETSI EN 302 065-1: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering essential requirements of article 3.2 of the Directive 2014/53/EU
Part 1: Requirements for Generic UWB applications".
[i.3] Recommendation ITU-R SM.1754 (2006): "Measurement techniques of ultra-wideband
transmissions".
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8 Draft ETSI EN 303 883 V1.1.0 (2016-02)
[i.4] ETSI TR 102 070-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Guide to
the application of harmonized standards to multi-radio and combined radio and non-radio
equipment; Part 2: Effective use of the radio frequency spectrum".
[i.5] EU Project WALTER (Project Number 216312): "Project Deliverable: WALTER report on
limitations of test methods to include calibration and measurement uncertainties", July 2009.
[i.6] ETSI TR 102 273 (V1.2.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties".
[i.7] Recommendation ITU-R SM 329-10 (2003): "Unwanted emissions in the spurious domain".
[i.8] ETSI EN 302 065-2: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering essential requirements of article 3.2 of the Directive 2014/53/EU
Part 2: Requirements for UWB location tracking".
[i.9] ETSI EN 302 065-3: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering essential requirements of article 3.2 of the Directive 2014/53/EU
Part 3: Requirements for UWB devices for ground based vehicular applications".
[i.10] ETSI EN 302 065-4: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering essential requirements of article 3.2 of the Directive 2014/53/EU
Part 4: Material Sensing devices using UWB technology below 10,6 GHz".
[i.11] ETSI EN 302 066: "Short Range Devices (SRD); Ground- and Wall- Probing Radar applications
(GPR/WPR) imaging systems; Harmonised Standard covering essential requirements of article 3.2
of the Directive 2014/53/EU".
[i.12] ETSI EN 302 372: "Short Range Devices (SRD); Equipment for Detection and Movement; Tank
Level Probing Radar (TLPR) operating in the frequency bands 5,8 GHz, 10 GHz, 25 GHz, 61 GHz
and 77 GHz; Harmonised Standard covering essential requirements of article 3.2 of the
Directive 2014/53/EU".
[i.13] ETSI EN 302 729: "Short Range Devices (SRD); Equipment for Detection and Movement; Level
Probing Radar (LPR) equipment operating in the frequency ranges 6 GHz to 8,5 GHz, 24,05 GHz
to 26,5 GHz, 57 GHz to 64 GHz, 75 GHz to 85 GHz; Harmonised Standard covering essential
requirements of article 3.2 of the Directive 2014/53/EU".
[i.14] ETSI TR 103 365: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time
Domain based Peak Power Measurement Procedure".
[i.15] ETSI TR 103 366: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time
Domain based Low Duty Cycle Measurement Procedure".
[i.16] ETSI TR 103 181-2 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Short Range Devices (SRD) using Ultra Wide Band (UWB); Transmission characteristics Part 2:
UWB mitigation techniques".
[i.17] ECC/DEC/(06)04: "The harmonised conditions for device using Ultra-Wideband (UWB)
technology in bands below 10.6 GHz", ECC Decision of 24 March 2006 amended
9 December 2011 on the harmonised conditions for devices using UWB technology in bands
below 10.6 GHz.
[i.18] ETSI TS 103 060: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short
Range Devices (SRD); Method for a harmonized definition of Duty Cycle Template (DCT)
transmission as a passive mitigation technique used by short range devices and related
conformance test methods".
[i.19] ETSI EN 301 489-33: "ElectroMagnetic Compatibility (EMC) standard for radio equipment and
services; Harmonised Standard covering the essential requirements of article 3.1b of the
Directive 2014/53/EU; Part 33: Specific conditions for Ultra Wide Band (UWB) devices".
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9 Draft ETSI EN 303 883 V1.1.0 (2016-02)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
avoidance level: maximum amplitude to which the UWB transmit power is set for the relevant protection zone
burst: emitted signal whose time duration (Ton) is not related to its bandwidth
combined equipment: any combination of non-radio equipment and a plug-in radio device that would not offer full
functionality without the radio device
cycle time: length of time between subsequent transmissions of the same system at full load
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
default avoidance bandwidth: portion of the victim service bandwidth to be protected if no enhanced service
bandwidth identification mechanisms are implemented in the DAA enabled devices
detect and avoid time: time duration between a change of the external RF environmental conditions and adaptation of
the corresponding UWB operational parameters
detection probability: probability that the DAA enabled UWB radio device reacts appropriately to a signal detection
threshold crossing within the detect and avoid time
duty cycle: percentage of the transmitter sum of all burst duration "on" relative to a given period
dwell time: duration of a transmission on a particular sub-channel
Effective Radiated Power (E.R.P.): product of the power supplied to the antenna and its gain relative to a half-wave
dipole in a given direction (RR 1.162)
Equivalent Isotropically Radiated Power (E.I.R.P.): product of the power supplied to the antenna and the antenna
gain in a given direction relative to an isotropic antenna (absolute or isotropic gain) (RR 1.161)
gating: transmission that is intermittent or of a low duty cycle referring to the use of burst transmissions where a
transmitter is switched on and off for selected time intervals
hopping: spread spectrum technique whereby individual radio links are continually switched from one subchannel to
another
hopping cycle: number of hopping positions for a full frequency hopping sequence
host equipment: any equipment which has complete user functionality when not connected to the radio equipment part
and to which the radio equipment part provides additional functionality and to which connection is necessary for the
radio equipment part to offer functionality
impulse: pulse whose width is determined by its dc step risetime and whose maximum amplitude is determined by its
dc step value
integral antenna: permanent fixed antenna, which may be built-in, designed as an indispensable part of the equipment
maximum avoidance power level: UWB transmit power assuring the equivalent protection of the victim service
minimum avoidance bandwidth: portion of the victim service bandwidth requiring protection
minimum initial channel availability check time: minimum time the UWB radio device spends searching for victim
signals after power on, Parameter: T
avail, Time
Non-Interference Mode operation (NIM): operational mode that allows the use of the radio spectrum on a
non-interference basis without active mitigation techniques
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10 Draft ETSI EN 303 883 V1.1.0 (2016-02)
plug-in radio device: radio equipment module intended to be used with or within host, combined or multi-radio
equipment, using their control functions and power supply
pulse: short transient signal whose time duration is nominally the reciprocal of its -10 dB bandwidth
rf carrier: fixed radio frequency prior to modulation
signal detection threshold: amplitude of the victim signal which defines the transition between adjacent protection
zones, Parameter: D
thresh
NOTE: The threshold level is defined to be the signal level at the receiver front end of the UWB DAA radio
device and assuming a 0 dBi receive antenna.
signal detection threshold set: set of amplitudes of the victim signal which defines the transition between adjacent
protection zones
stand-alone radio equipment: equipment intended primarily as communications equipment and that is normally used
on a stand-alone basis
sweep time: time to tune the LO across the selected span
i.18
transmission: sequence of emissions separated by intervals shorter than Tdis [ ]
transmitter timeout functionality: internal functionality that switches off the system in order to reduce power
consumption or for regulatory reasons
victim signal: signal(s) of the service to be detected and protected by the DAA mitigation technique
wideband: emission whose occupied bandwidth is greater than the test equipment measurement bandwidth
zone model: flexible DAA concept based on the definition of different zones as defined in ETSI TS 102 754 [4]
3.2 Symbols
For the purposes of the present document, the following symbols apply:
Ω ohm
λ wavelength
σ standard deviation
Θ elevation angle
Φ azimuth angle
D detection threshold
dB decibel
dBi gain in decibels relative to an isotropic antenna
dBm gain in decibels relative to one milliwatt
f frequency
centre frequency for the filter
fc
f lowest frequency of the operating bandwidth
L
fH highest frequency of the operating bandwidth
f centre frequency of the operating bandwidth
C
f frequency for peak power measurement
M
f[t] filter coefficients at time t, centred on f
M
G gain of the filter
I isolation in dB
P power in dBm
P peak power in filter bandwidth
peak,filtered
P maximum peak power in filter bandwidth
peak,max
R distance
minimum initial channel availability check time
Tavail_time_min
T detect and avoid time
avoid
NOTE: Actual Detect and Avoid time of a DUT, can be negative.
T maximum allowed Detect and avoid time
avoid_max
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11 Draft ETSI EN 303 883 V1.1.0 (2016-02)
T time
t discrete time variable
T time interval below which interruptions within a transmission are considered part of T (disregard
dis on
time)" [i.18]
T reference interval of time (observation period) [i.18]
obs
T time interval between two consecutive bursts when the UWB emission is kept idle
off
NOTE: T is defined as "the time duration between two consecutive transmissions" [i.18].
off
T duration of a burst irrespective of the number of pulses contained
on
NOTE: T is defined as "the duration of a transmission".
on
V peak voltage in filter bandwidth
peak,filtered
Z characteristic impedance
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ADC Analogue-to-Digital
BW BandWidth
BWA Broadband Wireless Access
CON Connector
DAA Detect And Avoid
DC Direct Current
DEC DECision
DUT Device Under Test
EC European Commission
ECC European Communication Committee
EIRP Equivalent Isotropically Radiated Power also called e.i.r.p., eirp, E.I.R.P.
EMC Electro Magnetic Compatibility
EN European Norm
ERM Electromagnetic compatibility and Radio spectrum Matters ®
ESA Economy Spectrum Analyzer
ESD Electro Static Discharge
ETSI European Telecommunications Standards Institute
EUT Equipment Under Test
FC Centre Frequency
FCC Federal Commission for Communications
FH Frequency Hopping
FH-UWB Frequency Hopping-UWB
FMCW Frequency Modulated Continuous Wave
HS Harmonised Standard
IF Intermediate Frequency
ITU International Telecommunications Union
LDC Low Duty Cycle
LNA Low Noise Amplifier
LO Local Oscillator
NIM Non-Interference Mode operation
OBW Operating BandWidth
OE Other Emissions of the radiated emissions
OFDM Orthogonal Frequency Division Multiple Access
PEP Peak Envelope Power
PPM Part Per Million
PRF Pulse Repetition Frequency ®
PSA Power Spectrum Analyser
PSD Power Spectral Density
RBW Resolution BandWidth
REC RECommendation
RF Radio Frequency
RMS Root Mean of Squares
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12 Draft ETSI EN 303 883 V1.1.0 (2016-02)
RX Receiver
SNR Signal to Noise Ratio
TE Total Emission
TPC Transmit Power Control
TX Transmitter
UE User Equipment
UUT Unit Under Test
UWB Ultra Wide Band
VBW Video BandWidth
VSWR Voltage Standing Wave Ratio
4 Overview
4.1 Basic information
In this clause a short overview over the existing and known UWB signal formats will be giv
...
Final draft ETSI EN 303 883 V1.1.1 (2016-07)
EUROPEAN STANDARD
Short Range Devices (SRD)
using Ultra Wide Band (UWB);
Measurement Techniques
2 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
Reference
DEN/ERM-TGUWB-125
Keywords
SRD, testing, UWB
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ETSI
3 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 6
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definitions, symbols and abbreviations . 10
3.1 Definitions . 10
3.2 Symbols . 11
3.3 Abbreviations . 12
4 Overview . 13
4.1 Basic information . 13
4.2 Impulse derived (carrier-less) . 13
4.3 Frequency modulated/carrier-based . 14
5 General Consideration and test requirements . 15
5.1 Overview . 15
5.2 Product information . 16
5.3 Requirements for the test modulation . 16
5.4 Test conditions, power supply and ambient temperatures . 17
5.4.1 Test conditions . 17
5.4.2 Power sources . 17
5.4.2.1 Power sources for stand-alone equipment . 17
5.4.2.2 Power sources for plug-in radio devices . 17
5.4.3 Normal test conditions . 17
5.4.3.1 Normal temperature and humidity . 17
5.4.3.2 Normal power source . 18
5.4.3.2.1 Mains voltage . 18
5.4.3.2.2 Lead-acid battery power sources used on vehicles . 18
5.4.3.2.3 Other power sources . 18
5.5 Choice of equipment for test suites . 18
5.5.1 Choice of model . 18
5.5.2 Presentation. 18
5.5.3 Multiple operating bandwidths . 18
5.6 Testing of host connected equipment and plug-in radio devices . 18
5.6.1 General . 18
5.6.2 The use of a host or test fixture for testing plug-In radio devices . 19
5.7 Interpretation of the measurement results . 19
5.7.1 General points on interpretation of the measurement results . 19
5.7.2 Measurement uncertainty is equal to or less than maximum acceptable uncertainty . 19
5.7.3 Measurement uncertainty is greater than maximum acceptable uncertainty . 20
5.8 Other emissions . 20
6 Test setups and procedures . 20
6.1 Introduction . 20
6.2 Initial Measurement steps . 20
6.3 Radiated measurements . 21
6.3.1 General . 21
6.3.2 Test sites and general arrangements for measurements involving the use of radiated fields . 21
6.3.2.1 General . 21
6.3.2.2 Anechoic chamber . 21
6.3.2.3 Anechoic chamber with a conductive ground plane . 22
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4 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
6.3.2.4 Test antenna . 23
6.3.2.5 Substitution antenna . 24
6.3.2.6 Measuring antenna . 24
6.3.3 Guidance on the use of a radiation test site . 24
6.3.3.1 General on guidance on the use of a radiation test site . 24
6.3.3.2 Verification of the test site . 24
6.3.3.3 Preparation of the EUT . 24
6.3.3.4 Power supplies to the EUT . 25
6.3.3.5 Range length . 25
6.3.3.6 Site preparation . 25
6.3.4 Coupling of signals . 26
6.3.4.1 General . 26
6.3.4.2 Data Signals . 26
6.3.5 Standard test methods . 26
6.3.5.1 General information on test methods . 26
6.3.5.2 Calibrated setup . 26
6.3.5.3 Substitution method . 27
6.3.6 Standard calibration method . 27
6.4 Conducted measurements . 30
7 Test procedures for essential radio test suites . 30
7.1 General . 30
7.2 Definitions . 31
7.2.1 Introduction. 31
7.2.2 Operating bandwidth. 31
7.2.3 Maximum mean power spectral density . 31
7.2.4 Maximum peak power . 31
7.2.5 Emissions . 31
7.2.6 Receiver spurious emissions . 32
7.2.7 Power control . 32
7.2.8 Detect and avoid . 32
7.2.9 Duty Cycle . 32
7.3 Method of measurements of the UE . 33
7.3.1 Introduction. 33
7.3.2 Emission Measurements steps . 33
7.3.2.1 First step . 33
7.3.2.2 Second step . 33
7.4 Detailed measurement procedure . 34
7.4.1 Introduction. 34
7.4.2 Operating bandwidth. 34
7.4.3 Mean power spectral density measurements . 35
7.4.3.1 General on mean power spectral density measurement. 35
7.4.3.2 Mean power spectral density measurement: Method 1 . 36
7.4.3.3 Mean power spectral density measurement: Method 2 . 37
7.4.3.4 Mean power spectral density measurement: Method 3 . 38
7.4.4 Peak power measurements . 39
7.4.4.1 General on peak power measurement . 39
7.4.4.2 Peak power measurement: Method 1 . 40
7.4.4.3 Peak power measurement: Method 2 . 41
7.4.4.4 Peak power measurement: Method 3 . 42
7.4.4.4.1 Description . 42
7.4.4.4.2 Signal acquisition . 43
7.4.4.4.3 Post-Processing. 43
7.4.4.4.4 Limit . 44
7.4.5 Receiver spurious emissions . 44
7.4.6 Power control . 45
7.4.7 Test procedures for detect and avoid mechanisms . 45
7.4.7.1 Introduction . 45
7.4.7.2 Initial start-up test . 47
7.4.7.2.1 Start-up procedure . 47
7.4.7.2.2 Test without a victim test signal during the Minimum Initial Channel Availability Check
Time, Tavail_time_min. 47
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5 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
7.4.7.2.3 Test with a victim test signal at the beginning of the Minimum Initial Channel Availability
Check Time, T . 48
avail_time_min
7.4.7.2.4 Test with a victim test signal at the end of the Minimum Initial Channel Availability Check
Time, T . 50
avail_time_min
7.4.7.3 In-operation test . 52
7.4.7.3.1 General points for In-operation test . 52
7.4.7.3.2 In-operation test procedure . 53
7.4.8 Test procedures for Low Duty Cycle . 54
7.4.8.1 Test procedure for T /T , Method 1 . 54
on off
7.4.8.2 Test procedure for T /T , Method 2 . 56
on off
7.4.8.2.1 Description . 56
7.4.8.2.2 General test setup . 56
7.4.8.2.3 Time domain procedure for DC measurement . 56
7.5 Limits . 58
7.6 Maximum allowable measurement uncertainty . 59
Annex A (normative): Frequency domain measurements using spectrum analyser . 60
A.1 Spectrum analyser internal operation . 60
A.2 UWB power measurement procedures . 61
A.2.1 Introduction . 61
A.2.2 Maximum mean power spectral density . 61
A.2.2.1 General . 61
A.2.2.2 Average mean power: Finding highest . 62
A.2.3 Maximum peak power (e.i.r.p.) measurement procedure . 63
A.3 Calculation of peak limit for 3 MHz measurement bandwidth . 65
A.4 Detailed Information to standard test methods . 66
A.4.1 Spherical scan with automatic test antenna placement . 66
A.4.1.1 General . 66
A.4.1.2 Calibrated setup . 67
A.4.1.3 Substitution method . 67
A.4.1.4 Spherical scan with rotating device . 68
A.4.1.4.1 General . 68
A.4.1.4.2 Calibrated setup . 69
A.4.1.4.3 Substitution method . 69
A.4.1.5 Spherical scan other methods. 70
Annex B (informative): Measurement antenna and preamplifier specifications . 71
Annex C (informative): Bibliography . 72
History . 75
ETSI
6 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
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 (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.
Foreword
This final draft 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.
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): 6 months after doa
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
Ultra Wide Band (UWB) radio technology enables a new generation of high-speed data devices for short-range
communication purposes as well as location tracking and Sensor devices and opens new markets with a variety of
innovative applications.
UWB devices may form an integral part of other portable electronic equipment such as future generation cellular
phones or laptops equipped with UWB enabled short-range air interfaces.
In addition, UWB devices with an operating bandwidth of several hundreds of MHz up to several GHz allow tens of
centimetre-level accuracy real time localization and positioning even in the presence of severe multipath effects caused
by walls, furniture or any other harsh radio propagation environments.
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7 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
Based on the broad variety of different applications and the broad possible frequency range of operation the number of
possible deployed physical signal formats can be very large. The existing range of physical signal and modulation
formats range from traditional carrier based systems like OFDM over spread spectrum based system to carrier less
systems based on base band pulses. The frequency regulation on the other side only defines a single set of transmission
limits and values, which have to be fulfilled by all systems under the UWB regulation. Furthermore, the very high
channel bandwidth of a UWB signal gives a specific challenge to the needed measurement setup and the procedures.
Existing measurement methods need to be extended and new possible techniques should be described in the present
document.
ETSI
8 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
1 Scope
The present document summarizes the available information of possible measurement techniques and procedures for the
conformance measurement of various UWB signal formats in order to comply with the given transmission limits given
in the current regulation.
The present document will be used as a reference for existing and future ETSI standards covering UWB technologies.
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
http://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] ETSI TR 100 028 (V1.4.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[2] ANSI C63.5 (2006): "American National Standard for Calibration of Antennas Used for Radiated
Emission Measurements in Electro Magnetic Interference".
[3] ETSI TS 102 321 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Normalized Site Attenuation (NSA) and validation of a fully lined anechoic chamber up to
40 GHz".
[4] ETSI TS 102 754 (V1.2.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Short Range Devices (SRD); Technical characteristics of Detect-And-Avoid (DAA) mitigation
techniques for SRD equipment using Ultra Wideband (UWB) technology".
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] ETSI TR 103 181-1: "Short Range Devices (SRD) using Ultra Wide Band (UWB); Technical
Report Part 1: UWB signal characteristics and overview CEPT/ECC and EC regulation".
[i.2] ETSI EN 302 065-1: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 1: Requirements for Generic UWB applications".
[i.3] Recommendation ITU-R SM.1754 (2006): "Measurement techniques of ultra-wideband
transmissions".
ETSI
9 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
[i.4] ETSI TR 102 070-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Guide to
the application of harmonized standards to multi-radio and combined radio and non-radio
equipment; Part 2: Effective use of the radio frequency spectrum".
[i.5] EU Project WALTER (Project Number 216312): "Project Deliverable: WALTER report on
limitations of test methods to include calibration and measurement uncertainties", July 2009.
[i.6] ETSI TR 102 273 (V1.2.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties".
[i.7] Recommendation ITU-R SM 329-10 (2003): "Unwanted emissions in the spurious domain".
[i.8] ETSI EN 302 065-2: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 2: Requirements for UWB location tracking".
[i.9] ETSI EN 302 065-3: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 3: Requirements for UWB devices for ground based vehicular applications".
[i.10] ETSI EN 302 065-4: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 4: Material Sensing devices using UWB technology below 10,6 GHz".
[i.11] ETSI EN 302 066: "Short Range Devices (SRD); Ground- and Wall- Probing Radar applications
(GPR/WPR) imaging systems; Harmonised Standard covering the essential requirements of
article 3.2 of the Directive 2014/53/EU".
[i.12] ETSI EN 302 372: "Short Range Devices (SRD); Tank Level Probing Radar (TLPR) equipment
operating in the frequency ranges 4,5 GHz to 7 GHz, 8,5 GHz to 10,6 GHz, 24,05 GHz to 27 GHz,
57 GHz to 64 GHz, 75 GHz to 85 GHz; Harmonised Standard covering the essential requirements
of article 3.2 of the Directive 2014/53/EU".
[i.13] ETSI EN 302 729: "Short Range Devices (SRD); Level Probing Radar (LPR) equipment operating
in the frequency ranges 6 GHz to 8,5 GHz, 24,05 GHz to 26,5 GHz, 57 GHz to 64 GHz, 75 GHz
to 85 GHz; Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU".
[i.14] ETSI TR 103 365: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time
Domain Based Peak Power Measurement for UWB Devices".
[i.15] ETSI TS 103 366: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time
Domain based Low Duty Cycle Measurement for UWB".
[i.16] ETSI TR 103 181-2 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Short Range Devices (SRD) using Ultra Wide Band (UWB); Transmission characteristics Part 2:
UWB mitigation techniques".
[i.17] ECC/DEC/(06)04: "The harmonised conditions for device using Ultra-Wideband (UWB)
technology in bands below 10.6 GHz", ECC Decision of 24 March 2006 amended 9 December
2011 on the harmonised conditions for devices using UWB technology in bands below 10.6 GHz.
[i.18] ETSI TS 103 060: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short
Range Devices (SRD); Method for a harmonized definition of Duty Cycle Template (DCT)
transmission as a passive mitigation technique used by short range devices and related
conformance test methods".
[i.19] ETSI EN 301 489-33: "ElectroMagnetic Compatibility (EMC) standard for radio equipment and
services; Part 33: Specific conditions for Ultra-WideBand (UWB) devices; Harmonised Standard
covering the essential requirements of article 3.1(b) of the Directive 2014/53/EU".
ETSI
10 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
avoidance level: maximum amplitude to which the UWB transmit power is set for the relevant protection zone
burst: emitted signal whose time duration (Ton) is not related to its bandwidth
combined equipment: any combination of non-radio equipment and a plug-in radio device that would not offer full
functionality without the radio device
cycle time: length of time between subsequent transmissions of the same system at full load
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
default avoidance bandwidth: portion of the victim service bandwidth to be protected if no enhanced service
bandwidth identification mechanisms are implemented in the DAA enabled devices
detect and avoid time: time duration between a change of the external RF environmental conditions and adaptation of
the corresponding UWB operational parameters
detection probability: probability that the DAA enabled UWB radio device reacts appropriately to a signal detection
threshold crossing within the detect and avoid time
duty cycle: percentage of the transmitter sum of all burst duration "on" relative to a given period
dwell time: duration of a transmission on a particular sub-channel
Effective Radiated Power (E.R.P.): product of the power supplied to the antenna and its gain relative to a half-wave
dipole in a given direction (RR 1.162)
Equivalent Isotropically Radiated Power (E.I.R.P.): product of the power supplied to the antenna and the antenna
gain in a given direction relative to an isotropic antenna (absolute or isotropic gain) (RR 1.161)
gating: transmission that is intermittent or of a low duty cycle referring to the use of burst transmissions where a
transmitter is switched on and off for selected time intervals
hopping: spread spectrum technique whereby individual radio links are continually switched from one subchannel to
another
hopping cycle: number of hopping positions for a full frequency hopping sequence
host equipment: any equipment which has complete user functionality when not connected to the radio equipment part
and to which the radio equipment part provides additional functionality and to which connection is necessary for the
radio equipment part to offer functionality
impulse: pulse whose width is determined by its dc step risetime and whose maximum amplitude is determined by its
dc step value
integral antenna: permanent fixed antenna, which may be built-in, designed as an indispensable part of the equipment
maximum avoidance power level: UWB transmit power assuring the equivalent protection of the victim service
minimum avoidance bandwidth: portion of the victim service bandwidth requiring protection
minimum initial channel availability check time: minimum time the UWB radio device spends searching for victim
signals after power on, Parameter: T
avail, Time
Non-Interference Mode operation (NIM): operational mode that allows the use of the radio spectrum on a
non-interference basis without active mitigation techniques
ETSI
11 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
plug-in radio device: radio equipment module intended to be used with or within host, combined or multi-radio
equipment, using their control functions and power supply
pulse: short transient signal whose time duration is nominally the reciprocal of its -10 dB bandwidth
rf carrier: fixed radio frequency prior to modulation
signal detection threshold: amplitude of the victim signal which defines the transition between adjacent protection
zones, Parameter: D
thresh
NOTE: The threshold level is defined to be the signal level at the receiver front end of the UWB DAA radio
device and assuming a 0 dBi receive antenna.
signal detection threshold set: set of amplitudes of the victim signal which defines the transition between adjacent
protection zones
stand-alone radio equipment: equipment intended primarily as communications equipment and that is normally used
on a stand-alone basis
sweep time: time to tune the LO across the selected span
transmission: sequence of emissions separated by intervals shorter than T , ETSI TS 103 060 [i.18]
dis
transmitter timeout functionality: internal functionality that switches off the system in order to reduce power
consumption or for regulatory reasons
victim signal: signal(s) of the service to be detected and protected by the DAA mitigation technique
wideband: emission whose occupied bandwidth is greater than the test equipment measurement bandwidth
zone model: flexible DAA concept based on the definition of different zones as defined in ETSI TS 102 754 [4]
3.2 Symbols
For the purposes of the present document, the following symbols apply:
Ω ohm
λ wavelength
standard deviation
σ
Θ elevation angle
Φ azimuth angle
C attenuation from the EUT reference plane to the spectrum analyser
ATT total
D detection threshold
dB decibel
dBi gain in decibels relative to an isotropic antenna
dBm gain in decibels relative to one milliwatt
f frequency
f centre frequency for the filter
c
f lowest frequency of the operating bandwidth
L
f highest frequency of the operating bandwidth
H
f centre frequency of the operating bandwidth
C
f frequency for peak power measurement
M
f[t] filter coefficients at time t, centred on f
M
G gain of the filter
G attenuator loss
ATT
G gain low noise amplifier
LNA
I isolation in dB
P power in dBm
P peak power in filter bandwidth
peak,filtered
P maximum peak power in filter bandwidth
peak,max
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12 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
R distance
T minimum initial channel availability check time
avail_time_min
T detect and avoid time
avoid
NOTE: Actual Detect and Avoid time of a DUT, can be negative.
T maximum allowed Detect and avoid time
avoid_max
T time
t discrete time variable
T time interval below which interruptions within a transmission are considered part of T (disregard
dis on
time), ETSI TS 103 060 [i.18]
T reference interval of time (observation period, ETSI TS 103 060) [i.18]
obs
T time interval between two consecutive bursts when the UWB emission is kept idle
off
NOTE: T is defined as "the time duration between two consecutive transmissions", ETSI TS 103 060 [i.18].
off
T duration of a burst irrespective of the number of pulses contained
on
NOTE: T is defined as "the duration of a transmission".
on
V peak voltage in filter bandwidth
peak,filtered
Z characteristic impedance
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ADC Analogue-to-Digital Converter
BW BandWidth
BWA Broadband Wireless Access
CON Connector
DAA Detect And Avoid
DC Direct Current
DEC DECision
DUT Device Under Test
EC European Commission
ECC European Communication Committee
EIRP Equivalent Isotropically Radiated Power
NOTE: also called e.i.r.p., eirp, E.I.R.P.
EMC Electro Magnetic Compatibility
EN European Norm
ERM Electromagnetic compatibility and Radio spectrum Matters ®
ESA Economy Spectrum Analyser
ESD Electro Static Discharge
ETSI European Telecommunications Standards Institute
EU European Union
EUT Equipment Under Test
FC Centre Frequency
FCC Federal Commission for Communications
FH Frequency Hopping
FH-UWB Frequency Hopping-UWB
FMCW Frequency Modulated Continuous Wave
HS Harmonised Standard
IF Intermediate Frequency
ITU International Telecommunications Union
LDC Low Duty Cycle
LNA Low Noise Amplifier
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13 Final draft ETSI EN 303 883 V1.1.1 (2016-07)
LO Local Oscillator
NIM Non-Interference Mode operation
OBW Operating BandWidth
OE Other Emissions of the radiated emissions
OFDM Orthogonal Frequency Division Multiple
PEP Peak Envelope Power
PPM Part Per Million
PRF Pulse Repetition Frequency ®
PSA Power Spectrum Analyser
PSD Power Spectral Density
RBW Resolution BandWidth
REC R
...
EUROPEAN STANDARD
Short Range Devices (SRD)
using Ultra Wide Band (UWB);
Measurement Techniques
2 ETSI EN 303 883 V1.1.1 (2016-09)
Reference
DEN/ERM-TGUWB-125
Keywords
SRD, testing, UWB
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Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
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The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
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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
3 ETSI EN 303 883 V1.1.1 (2016-09)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 6
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definitions, symbols and abbreviations . 10
3.1 Definitions . 10
3.2 Symbols . 11
3.3 Abbreviations . 12
4 Overview . 13
4.1 Basic information . 13
4.2 Impulse derived (carrier-less) . 13
4.3 Frequency modulated/carrier-based . 14
5 General Consideration and test requirements . 15
5.1 Overview . 15
5.2 Product information . 16
5.3 Requirements for the test modulation . 16
5.4 Test conditions, power supply and ambient temperatures . 17
5.4.1 Test conditions . 17
5.4.2 Power sources . 17
5.4.2.1 Power sources for stand-alone equipment . 17
5.4.2.2 Power sources for plug-in radio devices . 17
5.4.3 Normal test conditions . 17
5.4.3.1 Normal temperature and humidity . 17
5.4.3.2 Normal power source . 18
5.4.3.2.1 Mains voltage . 18
5.4.3.2.2 Lead-acid battery power sources used on vehicles . 18
5.4.3.2.3 Other power sources . 18
5.5 Choice of equipment for test suites . 18
5.5.1 Choice of model . 18
5.5.2 Presentation. 18
5.5.3 Multiple operating bandwidths . 18
5.6 Testing of host connected equipment and plug-in radio devices . 18
5.6.1 General . 18
5.6.2 The use of a host or test fixture for testing plug-In radio devices . 19
5.7 Interpretation of the measurement results . 19
5.7.1 General points on interpretation of the measurement results . 19
5.7.2 Measurement uncertainty is equal to or less than maximum acceptable uncertainty . 19
5.7.3 Measurement uncertainty is greater than maximum acceptable uncertainty . 20
5.8 Other emissions . 20
6 Test setups and procedures . 20
6.1 Introduction . 20
6.2 Initial Measurement steps . 20
6.3 Radiated measurements . 21
6.3.1 General . 21
6.3.2 Test sites and general arrangements for measurements involving the use of radiated fields . 21
6.3.2.1 General . 21
6.3.2.2 Anechoic chamber . 21
6.3.2.3 Anechoic chamber with a conductive ground plane . 22
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4 ETSI EN 303 883 V1.1.1 (2016-09)
6.3.2.4 Test antenna . 23
6.3.2.5 Substitution antenna . 24
6.3.2.6 Measuring antenna . 24
6.3.3 Guidance on the use of a radiation test site . 24
6.3.3.1 General on guidance on the use of a radiation test site . 24
6.3.3.2 Verification of the test site . 24
6.3.3.3 Preparation of the EUT . 24
6.3.3.4 Power supplies to the EUT . 25
6.3.3.5 Range length . 25
6.3.3.6 Site preparation . 25
6.3.4 Coupling of signals . 26
6.3.4.1 General . 26
6.3.4.2 Data Signals . 26
6.3.5 Standard test methods . 26
6.3.5.1 General information on test methods . 26
6.3.5.2 Calibrated setup . 26
6.3.5.3 Substitution method . 27
6.3.6 Standard calibration method . 27
6.4 Conducted measurements . 30
7 Test procedures for essential radio test suites . 30
7.1 General . 30
7.2 Definitions . 31
7.2.1 Introduction. 31
7.2.2 Operating bandwidth. 31
7.2.3 Maximum mean power spectral density . 31
7.2.4 Maximum peak power . 31
7.2.5 Emissions . 31
7.2.6 Receiver spurious emissions . 32
7.2.7 Power control . 32
7.2.8 Detect and avoid . 32
7.2.9 Duty Cycle . 32
7.3 Method of measurements of the UE . 33
7.3.1 Introduction. 33
7.3.2 Emission Measurements steps . 33
7.3.2.1 First step . 33
7.3.2.2 Second step . 33
7.4 Detailed measurement procedure . 34
7.4.1 Introduction. 34
7.4.2 Operating bandwidth. 34
7.4.3 Mean power spectral density measurements . 35
7.4.3.1 General on mean power spectral density measurement. 35
7.4.3.2 Mean power spectral density measurement: Method 1 . 36
7.4.3.3 Mean power spectral density measurement: Method 2 . 37
7.4.3.4 Mean power spectral density measurement: Method 3 . 38
7.4.4 Peak power measurements . 39
7.4.4.1 General on peak power measurement . 39
7.4.4.2 Peak power measurement: Method 1 . 40
7.4.4.3 Peak power measurement: Method 2 . 41
7.4.4.4 Peak power measurement: Method 3 . 42
7.4.4.4.1 Description . 42
7.4.4.4.2 Signal acquisition . 43
7.4.4.4.3 Post-Processing. 43
7.4.4.4.4 Limit . 44
7.4.5 Receiver spurious emissions . 44
7.4.6 Power control . 45
7.4.7 Test procedures for detect and avoid mechanisms . 45
7.4.7.1 Introduction . 45
7.4.7.2 Initial start-up test . 47
7.4.7.2.1 Start-up procedure . 47
7.4.7.2.2 Test without a victim test signal during the Minimum Initial Channel Availability Check
Time, Tavail_time_min. 47
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5 ETSI EN 303 883 V1.1.1 (2016-09)
7.4.7.2.3 Test with a victim test signal at the beginning of the Minimum Initial Channel Availability
Check Time, T . 48
avail_time_min
7.4.7.2.4 Test with a victim test signal at the end of the Minimum Initial Channel Availability Check
Time, T . 50
avail_time_min
7.4.7.3 In-operation test . 52
7.4.7.3.1 General points for In-operation test . 52
7.4.7.3.2 In-operation test procedure . 53
7.4.8 Test procedures for Low Duty Cycle . 54
7.4.8.1 Test procedure for T /T , Method 1 . 54
on off
7.4.8.2 Test procedure for T /T , Method 2 . 56
on off
7.4.8.2.1 Description . 56
7.4.8.2.2 General test setup . 56
7.4.8.2.3 Time domain procedure for DC measurement . 56
7.5 Limits . 58
7.6 Maximum allowable measurement uncertainty . 59
Annex A (normative): Frequency domain measurements using spectrum analyser . 60
A.1 Spectrum analyser internal operation . 60
A.2 UWB power measurement procedures . 61
A.2.1 Introduction . 61
A.2.2 Maximum mean power spectral density . 61
A.2.2.1 General . 61
A.2.2.2 Average mean power: Finding highest . 62
A.2.3 Maximum peak power (e.i.r.p.) measurement procedure . 63
A.3 Calculation of peak limit for 3 MHz measurement bandwidth . 65
A.4 Detailed Information to standard test methods . 66
A.4.1 Spherical scan with automatic test antenna placement . 66
A.4.1.1 General . 66
A.4.1.2 Calibrated setup . 67
A.4.1.3 Substitution method . 67
A.4.1.4 Spherical scan with rotating device . 68
A.4.1.4.1 General . 68
A.4.1.4.2 Calibrated setup . 69
A.4.1.4.3 Substitution method . 69
A.4.1.5 Spherical scan other methods. 70
Annex B (informative): Measurement antenna and preamplifier specifications . 71
Annex C (informative): Bibliography . 72
History . 75
ETSI
6 ETSI EN 303 883 V1.1.1 (2016-09)
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 (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.
Foreword
This European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and
Radio spectrum Matters (ERM).
National transposition dates
Date of adoption of this EN: 12 September 2016
Date of latest announcement of this EN (doa): 31 December 2016
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2017
Date of withdrawal of any conflicting National Standard (dow): 30 June 2017
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
Ultra Wide Band (UWB) radio technology enables a new generation of high-speed data devices for short-range
communication purposes as well as location tracking and Sensor devices and opens new markets with a variety of
innovative applications.
UWB devices may form an integral part of other portable electronic equipment such as future generation cellular
phones or laptops equipped with UWB enabled short-range air interfaces.
In addition, UWB devices with an operating bandwidth of several hundreds of MHz up to several GHz allow tens of
centimetre-level accuracy real time localization and positioning even in the presence of severe multipath effects caused
by walls, furniture or any other harsh radio propagation environments.
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7 ETSI EN 303 883 V1.1.1 (2016-09)
Based on the broad variety of different applications and the broad possible frequency range of operation the number of
possible deployed physical signal formats can be very large. The existing range of physical signal and modulation
formats range from traditional carrier based systems like OFDM over spread spectrum based system to carrier less
systems based on base band pulses. The frequency regulation on the other side only defines a single set of transmission
limits and values, which have to be fulfilled by all systems under the UWB regulation. Furthermore, the very high
channel bandwidth of a UWB signal gives a specific challenge to the needed measurement setup and the procedures.
Existing measurement methods need to be extended and new possible techniques should be described in the present
document.
ETSI
8 ETSI EN 303 883 V1.1.1 (2016-09)
1 Scope
The present document summarizes the available information of possible measurement techniques and procedures for the
conformance measurement of various UWB signal formats in order to comply with the given transmission limits given
in the current regulation.
The present document will be used as a reference for existing and future ETSI standards covering UWB technologies.
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
http://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] ETSI TR 100 028 (V1.4.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
[2] ANSI C63.5 (2006): "American National Standard for Calibration of Antennas Used for Radiated
Emission Measurements in Electro Magnetic Interference".
[3] ETSI TS 102 321 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Normalized Site Attenuation (NSA) and validation of a fully lined anechoic chamber up to
40 GHz".
[4] ETSI TS 102 754 (V1.2.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Short Range Devices (SRD); Technical characteristics of Detect-And-Avoid (DAA) mitigation
techniques for SRD equipment using Ultra Wideband (UWB) technology".
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] ETSI TR 103 181-1: "Short Range Devices (SRD) using Ultra Wide Band (UWB); Technical
Report Part 1: UWB signal characteristics and overview CEPT/ECC and EC regulation".
[i.2] ETSI EN 302 065-1: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 1: Requirements for Generic UWB applications".
[i.3] Recommendation ITU-R SM.1754 (2006): "Measurement techniques of ultra-wideband
transmissions".
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9 ETSI EN 303 883 V1.1.1 (2016-09)
[i.4] ETSI TR 102 070-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Guide to
the application of harmonized standards to multi-radio and combined radio and non-radio
equipment; Part 2: Effective use of the radio frequency spectrum".
[i.5] EU Project WALTER (Project Number 216312): "Project Deliverable: WALTER report on
limitations of test methods to include calibration and measurement uncertainties", July 2009.
[i.6] ETSI TR 102 273 (V1.2.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties".
[i.7] Recommendation ITU-R SM 329-10 (2003): "Unwanted emissions in the spurious domain".
[i.8] ETSI EN 302 065-2: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 2: Requirements for UWB location tracking".
[i.9] ETSI EN 302 065-3: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 3: Requirements for UWB devices for ground based vehicular applications".
[i.10] ETSI EN 302 065-4: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB);
Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU; Part 4: Material Sensing devices using UWB technology below 10,6 GHz".
[i.11] ETSI EN 302 066: "Short Range Devices (SRD); Ground- and Wall- Probing Radar applications
(GPR/WPR) imaging systems; Harmonised Standard covering the essential requirements of
article 3.2 of the Directive 2014/53/EU".
[i.12] ETSI EN 302 372: "Short Range Devices (SRD); Tank Level Probing Radar (TLPR) equipment
operating in the frequency ranges 4,5 GHz to 7 GHz, 8,5 GHz to 10,6 GHz, 24,05 GHz to 27 GHz,
57 GHz to 64 GHz, 75 GHz to 85 GHz; Harmonised Standard covering the essential requirements
of article 3.2 of the Directive 2014/53/EU".
[i.13] ETSI EN 302 729: "Short Range Devices (SRD); Level Probing Radar (LPR) equipment operating
in the frequency ranges 6 GHz to 8,5 GHz, 24,05 GHz to 26,5 GHz, 57 GHz to 64 GHz, 75 GHz
to 85 GHz; Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU".
[i.14] ETSI TR 103 365: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time
Domain Based Peak Power Measurement for UWB Devices".
[i.15] ETSI TS 103 366: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time
Domain based Low Duty Cycle Measurement for UWB".
[i.16] ETSI TR 103 181-2 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Short Range Devices (SRD) using Ultra Wide Band (UWB); Transmission characteristics Part 2:
UWB mitigation techniques".
[i.17] ECC/DEC/(06)04: "The harmonised conditions for device using Ultra-Wideband (UWB)
technology in bands below 10.6 GHz", ECC Decision of 24 March 2006 amended 9 December
2011 on the harmonised conditions for devices using UWB technology in bands below 10.6 GHz.
[i.18] ETSI TS 103 060: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short
Range Devices (SRD); Method for a harmonized definition of Duty Cycle Template (DCT)
transmission as a passive mitigation technique used by short range devices and related
conformance test methods".
[i.19] ETSI EN 301 489-33: "ElectroMagnetic Compatibility (EMC) standard for radio equipment and
services; Part 33: Specific conditions for Ultra-WideBand (UWB) devices; Harmonised Standard
covering the essential requirements of article 3.1(b) of the Directive 2014/53/EU".
ETSI
10 ETSI EN 303 883 V1.1.1 (2016-09)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
avoidance level: maximum amplitude to which the UWB transmit power is set for the relevant protection zone
burst: emitted signal whose time duration (Ton) is not related to its bandwidth
combined equipment: any combination of non-radio equipment and a plug-in radio device that would not offer full
functionality without the radio device
cycle time: length of time between subsequent transmissions of the same system at full load
dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part
of the equipment
default avoidance bandwidth: portion of the victim service bandwidth to be protected if no enhanced service
bandwidth identification mechanisms are implemented in the DAA enabled devices
detect and avoid time: time duration between a change of the external RF environmental conditions and adaptation of
the corresponding UWB operational parameters
detection probability: probability that the DAA enabled UWB radio device reacts appropriately to a signal detection
threshold crossing within the detect and avoid time
duty cycle: percentage of the transmitter sum of all burst duration "on" relative to a given period
dwell time: duration of a transmission on a particular sub-channel
Effective Radiated Power (E.R.P.): product of the power supplied to the antenna and its gain relative to a half-wave
dipole in a given direction (RR 1.162)
Equivalent Isotropically Radiated Power (E.I.R.P.): product of the power supplied to the antenna and the antenna
gain in a given direction relative to an isotropic antenna (absolute or isotropic gain) (RR 1.161)
gating: transmission that is intermittent or of a low duty cycle referring to the use of burst transmissions where a
transmitter is switched on and off for selected time intervals
hopping: spread spectrum technique whereby individual radio links are continually switched from one subchannel to
another
hopping cycle: number of hopping positions for a full frequency hopping sequence
host equipment: any equipment which has complete user functionality when not connected to the radio equipment part
and to which the radio equipment part provides additional functionality and to which connection is necessary for the
radio equipment part to offer functionality
impulse: pulse whose width is determined by its dc step risetime and whose maximum amplitude is determined by its
dc step value
integral antenna: permanent fixed antenna, which may be built-in, designed as an indispensable part of the equipment
maximum avoidance power level: UWB transmit power assuring the equivalent protection of the victim service
minimum avoidance bandwidth: portion of the victim service bandwidth requiring protection
minimum initial channel availability check time: minimum time the UWB radio device spends searching for victim
signals after power on, Parameter: T
avail, Time
Non-Interference Mode operation (NIM): operational mode that allows the use of the radio spectrum on a
non-interference basis without active mitigation techniques
ETSI
11 ETSI EN 303 883 V1.1.1 (2016-09)
plug-in radio device: radio equipment module intended to be used with or within host, combined or multi-radio
equipment, using their control functions and power supply
pulse: short transient signal whose time duration is nominally the reciprocal of its -10 dB bandwidth
rf carrier: fixed radio frequency prior to modulation
signal detection threshold: amplitude of the victim signal which defines the transition between adjacent protection
zones, Parameter: D
thresh
NOTE: The threshold level is defined to be the signal level at the receiver front end of the UWB DAA radio
device and assuming a 0 dBi receive antenna.
signal detection threshold set: set of amplitudes of the victim signal which defines the transition between adjacent
protection zones
stand-alone radio equipment: equipment intended primarily as communications equipment and that is normally used
on a stand-alone basis
sweep time: time to tune the LO across the selected span
transmission: sequence of emissions separated by intervals shorter than T , ETSI TS 103 060 [i.18]
dis
transmitter timeout functionality: internal functionality that switches off the system in order to reduce power
consumption or for regulatory reasons
victim signal: signal(s) of the service to be detected and protected by the DAA mitigation technique
wideband: emission whose occupied bandwidth is greater than the test equipment measurement bandwidth
zone model: flexible DAA concept based on the definition of different zones as defined in ETSI TS 102 754 [4]
3.2 Symbols
For the purposes of the present document, the following symbols apply:
Ω ohm
λ wavelength
standard deviation
σ
Θ elevation angle
Φ azimuth angle
C attenuation from the EUT reference plane to the spectrum analyser
ATT total
D detection threshold
dB decibel
dBi gain in decibels relative to an isotropic antenna
dBm gain in decibels relative to one milliwatt
f frequency
f centre frequency for the filter
c
f lowest frequency of the operating bandwidth
L
f highest frequency of the operating bandwidth
H
f centre frequency of the operating bandwidth
C
f frequency for peak power measurement
M
f[t] filter coefficients at time t, centred on f
M
G gain of the filter
G attenuator loss
ATT
G gain low noise amplifier
LNA
I isolation in dB
P power in dBm
P peak power in filter bandwidth
peak,filtered
P maximum peak power in filter bandwidth
peak,max
ETSI
12 ETSI EN 303 883 V1.1.1 (2016-09)
R distance
T minimum initial channel availability check time
avail_time_min
T detect and avoid time
avoid
NOTE: Actual Detect and Avoid time of a DUT, can be negative.
T maximum allowed Detect and avoid time
avoid_max
T time
t discrete time variable
T time interval below which interruptions within a transmission are considered part of T (disregard
dis on
time), ETSI TS 103 060 [i.18]
T reference interval of time (observation period, ETSI TS 103 060 [i.18])
obs
T time interval between two consecutive bursts when the UWB emission is kept idle
off
NOTE: T is defined as "the time duration between two consecutive transmissions", ETSI TS 103 060 [i.18].
off
T duration of a burst irrespective of the number of pulses contained
on
NOTE: T is defined as "the duration of a transmission".
on
V peak voltage in filter bandwidth
peak,filtered
Z characteristic impedance
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ADC Analogue-to-Digital Converter
BW BandWidth
BWA Broadband Wireless Access
CON Connector
DAA Detect And Avoid
DC Direct Current
DEC DECision
DUT Device Under Test
EC European Commission
ECC European Communication Committee
EIRP Equivalent Isotropically Radiated Power
NOTE: also called e.i.r.p., eirp, E.I.R.P.
EMC Electro Magnetic Compatibility
EN European Norm
ERM Electromagnetic compatibility and Radio spectrum Matters ®
ESA Economy Spectrum Analyser
ESD Electro Static Discharge
ETSI European Telecommunications Standards Institute
EU European Union
EUT Equipment Under Test
FC Centre Frequency
FCC Federal Commission for Communications
FH Frequency Hopping
FH-UWB Frequency Hopping-UWB
FMCW Frequency Modulated Continuous Wave
HS Harmonised Standard
IF Intermediate Frequency
ITU International Telecommunications Union
LDC Low Duty Cycle
LNA Low Noise Amplifier
ETSI
13 ETSI EN 303 883 V1.1.1 (2016-09)
LO Local Oscillator
NIM Non-Interference Mode operation
OBW Operating BandWidth
OE Other Emissions of the radiated emissions
OFDM Orthogonal Frequency Division Multiple
PEP Peak Envelope Power
PPM Part Per Million
PRF Pulse Repetition Frequency ®
PSA Power Spectrum Analyser
PSD Power Spectral Density
RBW Resolution BandWidth
REC RECommendation
RF Radio Frequency
RMS Root Mean of Squares
RX Receiver
SNR Signal to Noise Ratio
TE Total Emission
TPC Transmit Power Control
TX Transmitter
UE UWB Emissions
UUT Unit Under Test
UWB Ultra Wide Band
VBW Vi
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Short Range Devices (SRD) using Ultra Wide Band (UWB) - Measurement Techniques33.060.01Radijske komunikacije na splošnoRadiocommunications in generalICS:Ta slovenski standard je istoveten z:ETSI EN 303 883 V1.1.1 (2016-09)SIST EN 303 883 V1.1.1:2016en01-november-2016SIST EN 303 883 V1.1.1:2016SLOVENSKI
STANDARD
EUROPEAN STANDARD SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 2
Reference DEN/ERM-TGUWB-125 Keywords SRD, testing, UWB 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
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© European Telecommunications Standards Institute 2016. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 3 Contents Intellectual Property Rights . 6 Foreword . 6 Modal verbs terminology . 6 Introduction . 6 1 Scope . 8 2 References . 8 2.1 Normative references . 8 2.2 Informative references . 8 3 Definitions, symbols and abbreviations . 10 3.1 Definitions . 10 3.2 Symbols . 11 3.3 Abbreviations . 12 4 Overview . 13 4.1 Basic information . 13 4.2 Impulse derived (carrier-less) . 13 4.3 Frequency modulated/carrier-based . 14 5 General Consideration and test requirements . 15 5.1 Overview . 15 5.2 Product information . 16 5.3 Requirements for the test modulation . 16 5.4 Test conditions, power supply and ambient temperatures . 17 5.4.1 Test conditions . 17 5.4.2 Power sources . 17 5.4.2.1 Power sources for stand-alone equipment . 17 5.4.2.2 Power sources for plug-in radio devices . 17 5.4.3 Normal test conditions . 17 5.4.3.1 Normal temperature and humidity . 17 5.4.3.2 Normal power source . 18 5.4.3.2.1 Mains voltage . 18 5.4.3.2.2 Lead-acid battery power sources used on vehicles . 18 5.4.3.2.3 Other power sources . 18 5.5 Choice of equipment for test suites . 18 5.5.1 Choice of model . 18 5.5.2 Presentation. 18 5.5.3 Multiple operating bandwidths . 18 5.6 Testing of host connected equipment and plug-in radio devices . 18 5.6.1 General . 18 5.6.2 The use of a host or test fixture for testing plug-In radio devices . 19 5.7 Interpretation of the measurement results . 19 5.7.1 General points on interpretation of the measurement results . 19 5.7.2 Measurement uncertainty is equal to or less than maximum acceptable uncertainty . 19 5.7.3 Measurement uncertainty is greater than maximum acceptable uncertainty . 20 5.8 Other emissions . 20 6 Test setups and procedures . 20 6.1 Introduction . 20 6.2 Initial Measurement steps . 20 6.3 Radiated measurements . 21 6.3.1 General . 21 6.3.2 Test sites and general arrangements for measurements involving the use of radiated fields . 21 6.3.2.1 General . 21 6.3.2.2 Anechoic chamber . 21 6.3.2.3 Anechoic chamber with a conductive ground plane . 22 SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 4 6.3.2.4 Test antenna . 23 6.3.2.5 Substitution antenna . 24 6.3.2.6 Measuring antenna . 24 6.3.3 Guidance on the use of a radiation test site . 24 6.3.3.1 General on guidance on the use of a radiation test site . 24 6.3.3.2 Verification of the test site . 24 6.3.3.3 Preparation of the EUT . 24 6.3.3.4 Power supplies to the EUT . 25 6.3.3.5 Range length . 25 6.3.3.6 Site preparation . 25 6.3.4 Coupling of signals . 26 6.3.4.1 General . 26 6.3.4.2 Data Signals . 26 6.3.5 Standard test methods . 26 6.3.5.1 General information on test methods . 26 6.3.5.2 Calibrated setup . 26 6.3.5.3 Substitution method . 27 6.3.6 Standard calibration method . 27 6.4 Conducted measurements . 30 7 Test procedures for essential radio test suites . 30 7.1 General . 30 7.2 Definitions . 31 7.2.1 Introduction. 31 7.2.2 Operating bandwidth. 31 7.2.3 Maximum mean power spectral density . 31 7.2.4 Maximum peak power . 31 7.2.5 Emissions . 31 7.2.6 Receiver spurious emissions . 32 7.2.7 Power control . 32 7.2.8 Detect and avoid . 32 7.2.9 Duty Cycle . 32 7.3 Method of measurements of the UE . 33 7.3.1 Introduction. 33 7.3.2 Emission Measurements steps . 33 7.3.2.1 First step . 33 7.3.2.2 Second step . 33 7.4 Detailed measurement procedure . 34 7.4.1 Introduction. 34 7.4.2 Operating bandwidth. 34 7.4.3 Mean power spectral density measurements . 35 7.4.3.1 General on mean power spectral density measurement. 35 7.4.3.2 Mean power spectral density measurement: Method 1 . 36 7.4.3.3 Mean power spectral density measurement: Method 2 . 37 7.4.3.4 Mean power spectral density measurement: Method 3 . 38 7.4.4 Peak power measurements . 39 7.4.4.1 General on peak power measurement . 39 7.4.4.2 Peak power measurement: Method 1 . 40 7.4.4.3 Peak power measurement: Method 2 . 41 7.4.4.4 Peak power measurement: Method 3 . 42 7.4.4.4.1 Description . 42 7.4.4.4.2 Signal acquisition . 43 7.4.4.4.3 Post-Processing. 43 7.4.4.4.4 Limit . 44 7.4.5 Receiver spurious emissions . 44 7.4.6 Power control . 45 7.4.7 Test procedures for detect and avoid mechanisms . 45 7.4.7.1 Introduction . 45 7.4.7.2 Initial start-up test . 47 7.4.7.2.1 Start-up procedure . 47 7.4.7.2.2 Test without a victim test signal during the Minimum Initial Channel Availability Check Time, Tavail_time_min. 47 SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 5 7.4.7.2.3 Test with a victim test signal at the beginning of the Minimum Initial Channel Availability Check Time, Tavail_time_min . 48 7.4.7.2.4 Test with a victim test signal at the end of the Minimum Initial Channel Availability Check Time, Tavail_time_min. 50 7.4.7.3 In-operation test . 52 7.4.7.3.1 General points for In-operation test . 52 7.4.7.3.2 In-operation test procedure . 53 7.4.8 Test procedures for Low Duty Cycle . 54 7.4.8.1 Test procedure for Ton/Toff, Method 1 . 54 7.4.8.2 Test procedure for Ton/Toff, Method 2 . 56 7.4.8.2.1 Description . 56 7.4.8.2.2 General test setup . 56 7.4.8.2.3 Time domain procedure for DC measurement . 56 7.5 Limits . 58 7.6 Maximum allowable measurement uncertainty . 59 Annex A (normative): Frequency domain measurements using spectrum analyser . 60 A.1 Spectrum analyser internal operation . 60 A.2 UWB power measurement procedures . 61 A.2.1 Introduction . 61 A.2.2 Maximum mean power spectral density . 61 A.2.2.1 General . 61 A.2.2.2 Average mean power: Finding highest . 62 A.2.3 Maximum peak power (e.i.r.p.) measurement procedure . 63 A.3 Calculation of peak limit for 3 MHz measurement bandwidth . 65 A.4 Detailed Information to standard test methods . 66 A.4.1 Spherical scan with automatic test antenna placement . 66 A.4.1.1 General . 66 A.4.1.2 Calibrated setup . 67 A.4.1.3 Substitution method . 67 A.4.1.4 Spherical scan with rotating device . 68 A.4.1.4.1 General . 68 A.4.1.4.2 Calibrated setup . 69 A.4.1.4.3 Substitution method . 69 A.4.1.5 Spherical scan other methods. 70 Annex B (informative): Measurement antenna and preamplifier specifications . 71 Annex C (informative): Bibliography . 72 History . 75
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 6 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 (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. Foreword This European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM).
National transposition dates Date of adoption of this EN: 12 September 2016 Date of latest announcement of this EN (doa): 31 December 2016 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 June 2017 Date of withdrawal of any conflicting National Standard (dow): 30 June 2017
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 Ultra Wide Band (UWB) radio technology enables a new generation of high-speed data devices for short-range communication purposes as well as location tracking and Sensor devices and opens new markets with a variety of innovative applications.
UWB devices may form an integral part of other portable electronic equipment such as future generation cellular phones or laptops equipped with UWB enabled short-range air interfaces. In addition, UWB devices with an operating bandwidth of several hundreds of MHz up to several GHz allow tens of centimetre-level accuracy real time localization and positioning even in the presence of severe multipath effects caused by walls, furniture or any other harsh radio propagation environments. SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 7 Based on the broad variety of different applications and the broad possible frequency range of operation the number of possible deployed physical signal formats can be very large. The existing range of physical signal and modulation formats range from traditional carrier based systems like OFDM over spread spectrum based system to carrier less systems based on base band pulses. The frequency regulation on the other side only defines a single set of transmission limits and values, which have to be fulfilled by all systems under the UWB regulation. Furthermore, the very high channel bandwidth of a UWB signal gives a specific challenge to the needed measurement setup and the procedures. Existing measurement methods need to be extended and new possible techniques should be described in the present document.
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 8 1 Scope The present document summarizes the available information of possible measurement techniques and procedures for the conformance measurement of various UWB signal formats in order to comply with the given transmission limits given in the current regulation. The present document will be used as a reference for existing and future ETSI standards covering UWB technologies. 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 http://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] ETSI TR 100 028 (V1.4.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics". [2] ANSI C63.5 (2006): "American National Standard for Calibration of Antennas Used for Radiated Emission Measurements in Electro Magnetic Interference". [3] ETSI TS 102 321 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Normalized Site Attenuation (NSA) and validation of a fully lined anechoic chamber up to 40 GHz". [4] ETSI TS 102 754 (V1.2.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices (SRD); Technical characteristics of Detect-And-Avoid (DAA) mitigation techniques for SRD equipment using Ultra Wideband (UWB) technology". 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] ETSI TR 103 181-1: "Short Range Devices (SRD) using Ultra Wide Band (UWB); Technical Report Part 1: UWB signal characteristics and overview CEPT/ECC and EC regulation". [i.2] ETSI EN 302 065-1: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU; Part 1: Requirements for Generic UWB applications". [i.3] Recommendation ITU-R SM.1754 (2006): "Measurement techniques of ultra-wideband transmissions". SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 9 [i.4] ETSI TR 102 070-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Guide to the application of harmonized standards to multi-radio and combined radio and non-radio equipment; Part 2: Effective use of the radio frequency spectrum". [i.5] EU Project WALTER (Project Number 216312): "Project Deliverable: WALTER report on limitations of test methods to include calibration and measurement uncertainties", July 2009. [i.6] ETSI TR 102 273 (V1.2.1) (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Improvement on Radiated Methods of Measurement (using test site) and evaluation of the corresponding measurement uncertainties". [i.7] Recommendation ITU-R SM 329-10 (2003): "Unwanted emissions in the spurious domain". [i.8] ETSI EN 302 065-2: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU; Part 2: Requirements for UWB location tracking". [i.9] ETSI EN 302 065-3: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU; Part 3: Requirements for UWB devices for ground based vehicular applications". [i.10] ETSI EN 302 065-4: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU; Part 4: Material Sensing devices using UWB technology below 10,6 GHz". [i.11] ETSI EN 302 066: "Short Range Devices (SRD); Ground- and Wall- Probing Radar applications (GPR/WPR) imaging systems; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU". [i.12] ETSI EN 302 372: "Short Range Devices (SRD); Tank Level Probing Radar (TLPR) equipment operating in the frequency ranges 4,5 GHz to 7 GHz, 8,5 GHz to 10,6 GHz, 24,05 GHz to 27 GHz, 57 GHz to 64 GHz, 75 GHz to 85 GHz; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU". [i.13] ETSI EN 302 729: "Short Range Devices (SRD); Level Probing Radar (LPR) equipment operating in the frequency ranges 6 GHz to 8,5 GHz, 24,05 GHz to 26,5 GHz, 57 GHz to 64 GHz, 75 GHz to 85 GHz; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU". [i.14] ETSI TR 103 365: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time Domain Based Peak Power Measurement for UWB Devices". [i.15] ETSI TS 103 366: "Short Range Devices (SRD) using Ultra Wide Band technology (UWB); Time Domain based Low Duty Cycle Measurement for UWB". [i.16] ETSI TR 103 181-2 (V1.1.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices (SRD) using Ultra Wide Band (UWB); Transmission characteristics Part 2: UWB mitigation techniques". [i.17] ECC/DEC/(06)04: "The harmonised conditions for device using Ultra-Wideband (UWB) technology in bands below 10.6 GHz", ECC Decision of 24 March 2006 amended 9 December 2011 on the harmonised conditions for devices using UWB technology in bands below 10.6 GHz. [i.18] ETSI TS 103 060: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices (SRD); Method for a harmonized definition of Duty Cycle Template (DCT) transmission as a passive mitigation technique used by short range devices and related conformance test methods". [i.19] ETSI EN 301 489-33: "ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 33: Specific conditions for Ultra-WideBand (UWB) devices; Harmonised Standard covering the essential requirements of article 3.1(b) of the Directive 2014/53/EU". SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 10 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: avoidance level: maximum amplitude to which the UWB transmit power is set for the relevant protection zone burst: emitted signal whose time duration (Ton) is not related to its bandwidth combined equipment: any combination of non-radio equipment and a plug-in radio device that would not offer full functionality without the radio device cycle time: length of time between subsequent transmissions of the same system at full load dedicated antenna: removable antenna supplied and tested with the radio equipment, designed as an indispensable part of the equipment default avoidance bandwidth: portion of the victim service bandwidth to be protected if no enhanced service bandwidth identification mechanisms are implemented in the DAA enabled devices detect and avoid time: time duration between a change of the external RF environmental conditions and adaptation of the corresponding UWB operational parameters detection probability: probability that the DAA enabled UWB radio device reacts appropriately to a signal detection threshold crossing within the detect and avoid time duty cycle: percentage of the transmitter sum of all burst duration "on" relative to a given period dwell time: duration of a transmission on a particular sub-channel Effective Radiated Power (E.R.P.): product of the power supplied to the antenna and its gain relative to a half-wave dipole in a given direction (RR 1.162) Equivalent Isotropically Radiated Power (E.I.R.P.): product of the power supplied to the antenna and the antenna gain in a given direction relative to an isotropic antenna (absolute or isotropic gain) (RR 1.161) gating: transmission that is intermittent or of a low duty cycle referring to the use of burst transmissions where a transmitter is switched on and off for selected time intervals hopping: spread spectrum technique whereby individual radio links are continually switched from one subchannel to another hopping cycle: number of hopping positions for a full frequency hopping sequence host equipment: any equipment which has complete user functionality when not connected to the radio equipment part and to which the radio equipment part provides additional functionality and to which connection is necessary for the radio equipment part to offer functionality impulse: pulse whose width is determined by its dc step risetime and whose maximum amplitude is determined by its dc step value integral antenna: permanent fixed antenna, which may be built-in, designed as an indispensable part of the equipment maximum avoidance power level: UWB transmit power assuring the equivalent protection of the victim service minimum avoidance bandwidth: portion of the victim service bandwidth requiring protection minimum initial channel availability check time: minimum time the UWB radio device spends searching for victim signals after power on, Parameter: Tavail, Time Non-Interference Mode operation (NIM): operational mode that allows the use of the radio spectrum on a non-interference basis without active mitigation techniques SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 11 plug-in radio device: radio equipment module intended to be used with or within host, combined or multi-radio equipment, using their control functions and power supply pulse: short transient signal whose time duration is nominally the reciprocal of its -10 dB bandwidth rf carrier: fixed radio frequency prior to modulation signal detection threshold: amplitude of the victim signal which defines the transition between adjacent protection zones, Parameter: Dthresh NOTE: The threshold level is defined to be the signal level at the receiver front end of the UWB DAA radio device and assuming a 0 dBi receive antenna. signal detection threshold set: set of amplitudes of the victim signal which defines the transition between adjacent protection zones stand-alone radio equipment: equipment intended primarily as communications equipment and that is normally used on a stand-alone basis sweep time: time to tune the LO across the selected span transmission: sequence of emissions separated by intervals shorter than Tdis, ETSI TS 103 060 [i.18] transmitter timeout functionality: internal functionality that switches off the system in order to reduce power consumption or for regulatory reasons victim signal: signal(s) of the service to be detected and protected by the DAA mitigation technique wideband: emission whose occupied bandwidth is greater than the test equipment measurement bandwidth zone model: flexible DAA concept based on the definition of different zones as defined in ETSI TS 102 754 [4] 3.2 Symbols For the purposes of the present document, the following symbols apply: Ω ohm λ wavelength σ standard deviation Θ elevation angle Φ azimuth angle CATT total attenuation from the EUT reference plane to the spectrum analyser D detection threshold dB decibel dBi gain in decibels relative to an isotropic antenna dBm gain in decibels relative to one milliwatt f frequency fc centre frequency for the filter fL lowest frequency of the operating bandwidth fH highest frequency of the operating bandwidth fC centre frequency of the operating bandwidth fM frequency for peak power measurement f[t] filter coefficients at time t, centred on fM G gain of the filter GATT attenuator loss GLNA gain low noise amplifier I isolation in dB P power in dBm Ppeak,filtered peak power in filter bandwidth Ppeak,max maximum peak power in filter bandwidth SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 12 R distance Tavail_time_min minimum initial channel availability check time Tavoid detect and avoid time NOTE: Actual Detect and Avoid time of a DUT, can be negative. Tavoid_max maximum allowed Detect and avoid time T time t discrete time variable Tdis time interval below which interruptions within a transmission are considered part of Ton (disregard time), ETSI TS 103 060 [i.18] Tobs reference interval of time (observation period, ETSI TS 103 060 [i.18]) Toff time interval between two consecutive bursts when the UWB emission is kept idle
NOTE: Toff is defined as "the time duration between two consecutive transmissions", ETSI TS 103 060 [i.18]. Ton duration of a burst irrespective of the number of pulses contained NOTE: Ton is defined as "the duration of a transmission". Vpeak,filtered peak voltage in filter bandwidth Z0 characteristic impedance 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: AC Alternating Current ADC Analogue-to-Digital Converter BW BandWidth BWA Broadband Wireless Access CON Connector DAA Detect And Avoid DC Direct Current DEC DECision DUT Device Under Test EC European Commission ECC European Communication Committee EIRP Equivalent Isotropically Radiated Power NOTE: also called e.i.r.p., eirp, E.I.R.P. EMC Electro Magnetic Compatibility EN European Norm ERM Electromagnetic compatibility and Radio spectrum Matters ESA Economy Spectrum Analyser® ESD Electro Static Discharge ETSI European Telecommunications Standards Institute EU European Union EUT Equipment Under Test FC Centre Frequency FCC Federal Commission for Communications FH Frequency Hopping FH-UWB Frequency Hopping-UWB FMCW Frequency Modulated Continuous Wave HS Harmonised Standard IF Intermediate Frequency ITU International Telecommunications Union LDC Low Duty Cycle LNA Low Noise Amplifier SIST EN 303 883 V1.1.1:2016
ETSI ETSI EN 303 883 V1.1.1 (2016-09) 13 LO Local Oscillator NIM Non-Interference Mode operation OBW Operating BandWidth OE Other Emissions of the radiated emissions OFDM Orthogonal Frequency Division Multiple PEP Peak Envelope Power PPM Part Per Million PRF Pulse Repetition Frequency PSA Power Spectrum Analyser® PSD Power Spectral Density RBW Resolution BandWidth REC RECommendation RF Radio Frequency RMS Root Mean of Squares RX Receiver SNR Signal to Noise Ratio TE Total Emission TPC Transmit Power Control TX Transmitter UE UWB Emissions UUT Unit Under Test UWB Ultra Wide Band VBW Video BandWidth VSWR Voltage Standing Wave Ratio 4 Overview 4.1 Basic information In this clause a short overview over the existing and known UWB signal formats will be given. Based on the presented signal format the main issues of the needed measurement techniques will be derived. A more detailed description of the presented signal formats can be found in the ETSI TR 103 181-1 [i.1]. The present document describes measurements for many different types o
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