SIST-V ETSI/EG 203 336 V1.2.1:2020

ETSI GUIDE
Guide for the selection of technical parameters for the
production of Harmonised Standards
covering article 3.1(b) and article 3.2 of Directive 2014/53/EU

2 ETSI EG 203 336 V1.2.1 (2020-05)

Reference
REG/ERM-587
Keywords
harmonised standard, radio, receiver, regulation,
transmitter
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3 ETSI EG 203 336 V1.2.1 (2020-05)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Applicability of Radio Parameters . 9
4.1 General . 9
4.2 Additional Information required . 9
4.2.1 Operating frequency range . 9
4.2.2 Other information . 9
5 Technical parameters for article 3.2 of Directive 2014/53/EU . 10
5.1 General . 10
5.2 Transmitter parameters under article 3.2 of Directive 2014/53/EU . 10
5.2.1 General . 10
5.2.2 Transmitter power limits . 10
5.2.3 Transmitter power accuracy . 11
5.2.4 Transmitter Spectrum mask . 11
5.2.5 Transmitter frequency stability . 11
5.2.6 Transmitter intermodulation attenuation . 12
5.2.7 Transmitter unwanted emissions . 12
5.2.7.1 General . 12
5.2.7.2 Transmitter unwanted emissions in the out of band domain . 12
5.2.7.3 Transmitter unwanted emissions in the spurious domain . 12
5.2.8 Transmitter time domain characteristics . 12
5.2.9 Transmitter transients . 12
5.3 Receiver parameters under article 3.2 of Directive 2014/53/EU . 12
5.3.1 General . 12
5.3.2 Receiver sensitivity . 13
5.3.2.1 General . 13
5.3.2.2 Applicability considerations . 13
5.3.2.3 Desensitization . 14
5.3.3 Receiver co-channel rejection . 14
5.3.4 Receiver Selectivity . 14
5.3.4.1 General . 14
5.3.4.2 Receiver adjacent channel selectivity (adjacent band selectivity) . 14
5.3.4.2.1 Receiver adjacent channel selectivity . 14
5.3.4.2.2 Receiver adjacent band selectivity. 14
5.3.4.3 Receiver blocking . 15
5.3.4.4 Receiver spurious response rejection . 15
5.3.4.5 Receiver radio-frequency intermodulation . 15
5.3.5 Receiver unwanted emissions in the spurious domain . 16
5.3.6 Other receiver effects . 16
5.3.6.1 Receiver dynamic range . 16
5.3.6.2 Reciprocal mixing . 16
5.4 Protocol elements, interference mitigation techniques and type of modulation . 17
5.4.1 General . 17
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4 ETSI EG 203 336 V1.2.1 (2020-05)
5.4.2 Transmitter Power Control (TPC) . 17
5.4.3 Listen Before Talk (LBT) . 17
5.4.4 Equipment operating under the control of a network . 17
5.5 Antennas . 18
6 Technical parameters for article 3.1(b) (EMC) of Directive 2014/53/EU . 18
6.1 General . 18
6.2 Exclusion bands . 19
6.3 Combined equipment within the scope of Directive 2014/53/EU . 19
7 Structure of Harmonised Standards . 19
7.1 General . 19
7.2 Measurement information . 20
7.3 Scope . 20
7.4 Structure of the ETSI EN 301 489 series of EMC standards . 20
Annex A: Harmonised Standard Skeleton Document . 21
Annex B: Principles of the difference between radio and EMC requirements . 22
Annex C: Change History . 23
C.1 Differences between V1.1.1 and V1.2.1. 23
Annex D: Bibliography . 24
History . 25

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5 ETSI EG 203 336 V1.2.1 (2020-05)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This ETSI Guide (EG) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio
spectrum Matters (ERM).
Modal verbs terminology
In the present document "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
The present document reflects current understanding of this highly technical subject matter and is subject to change.
Therefore, it should be treated as guidance rather than a formal reference for judging the content of Harmonised
Standards.
It should be noted that this is not a mandatory document, transmitters and receivers should be assessed on their expected
use and appropriate parameters selected by the Technical Body.

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6 ETSI EG 203 336 V1.2.1 (2020-05)
1 Scope
The present document has been produced to help a Technical Body (TB) to produce a Harmonised Standard (HS)
covering the conformity of radio equipment with the essential requirements in articles 3.1(b) and 3.2 of the Radio
Equipment Directive (Directive 2014/53/EU [i.1]).
NOTE 1: Article 3.1(b) of Directive 2014/53/EU [i.1] states:
"Radio equipment shall be constructed so as to ensure….an adequate level of electromagnetic compatibility as set
out in Directive 2014/30/EU."
NOTE 2: Article 3.2 of Directive 2014/53/EU [i.1] states:
"Radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio
spectrum in order to avoid harmful interference."
The present document does not cover the production of HSs covering article 3.1(a) of Directive 2014/53/EU [i.1] which
is the responsibility of CENELEC and article 3.3 which requires delegated acts by the European Commission (EC).
2 References
2.1 Normative references
Normative references are not applicable in the present document.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC (OJ L153, 22.5.2014, p62).
[i.2] CEPT/ERC/Recommendation 74-01E: "Unwanted emissions in the spurious domain".
[i.3] Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the
harmonisation of the laws of the Member States relating to electromagnetic compatibility
(OJ L96 29.3.2014, p96).
[i.4] Void.
[i.5] Void.
[i.6] CEPT/ECC/Recommendation (02)05: "Unwanted emissions".
[i.7] Void.
[i.8] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (OJ L91, 7.4.1999).
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7 ETSI EG 203 336 V1.2.1 (2020-05)
[i.9] ETSI EN 300 676-1: "Ground-based VHF hand-held, mobile and fixed radio transmitters,
receivers and transceivers for the VHF aeronautical mobile service using amplitude modulation;
Part 1: Technical characteristics and methods of measurement".
[i.10] ETSI EN 301 489-1: "ElectroMagnetic Compatibility (EMC) standard for radio equipment and
services; Part 1: Common technical requirements; Harmonised Standard for ElectroMagnetic
Compatibility".
[i.11] ETSI EG 203 367: "Guide to the application of harmonised standards covering articles 3.1b and
3.2 of the Directive 2014/53/EU (RED) to multi-radio and combined radio and non-radio
equipment".
[i.12] RSPG 19-031: "RSPG Report on European Spectrum Strategy".
[i.13] ETSI TS 103 567 (V1.1.1): "Requirements on signal interferer handling".
[i.14] ETSI EN 301 489 (all parts): "ElectroMagnetic Compatibility (EMC) standard for radio equipment
and services".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in article 2 of Directive 2014/53/EU [i.1] and the following
apply:
adaptive frequency agility: technique used by some radio transmitters to avoid transmission in channels that are
already occupied by other spectrum users
adjacent channel: channel offset from the wanted channel by the channel spacing
NOTE: See figure 1.
f
c
Lower Wanted Upper Upper
Lower
Alternate Channel Adjacent Alternate
Adjacent
Figure 1: Adjacent and alternate channel/signal definitions
adjacent band: frequency band adjacent to the operating band
adjacent signal: signal adjacent to the wanted signal
alternate channels: channel(s) offset from the wanted channel by twice the channel spacing
NOTE: See figure 1.
cabinet radiation: emissions from the equipment, radiated from the enclosure port, other than those present at the
antenna port
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8 ETSI EG 203 336 V1.2.1 (2020-05)
detect and avoid: mechanism which mitigates interference potential by avoiding use of frequencies upon detection of
other transmissions on those frequencies
jitter (phase noise): short term variations of the significant instants of a digital signal from their reference positions in
time
operating band: frequency band in which the EUT is intended to transmit and/or receive
transmitter spectrum mask: maximum allowed power emitted by the transmitter as a function of frequency, either
expressed in power density versus frequency, or in total power within defined frequency band
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Carrier frequency
c
F Nominal frequency of the receiver
rx
F Intermediate frequency of the receiver
if
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ADC Analogue to Digital Converter
ADCO ADministrative COoperation groups
AFA Adaptive Frequency Agility
AM Amplitude Modulation
CENELEC European Committee for Electrotechnical Standardization
CEPT European Conference of Postal and Telecommunications Administrations
CISPR International Special Committee on Radio Interference (a subcommittee of IEC)
DAA Detect And Avoid
DDC Digital Down Conversion
DFS Dynamic Frequency Selection
EC European Commission
ECC Electronic Communications Committee
EIRP Effective Isotropic Radiated Power
EMC ElectroMagnetic Compatibility
ERP Effective Radiated Power
ESO European Standards Organization
EU European Union
EUT Equipment Under Test
HS Harmonised Standard
IEC International Electrotechnical Commission
LBT Listen Before Talk
LO Local Oscillator
OCG Operational Co-ordination Group
OOB Out Of Band
PPDR Public Protection and Disaster Relief
QoS Quality of Service
RED Radio Equipment Directive (2014/53/EU [i.1])
RF Radio Frequency
RIS Radio Interface Specifications
RLAN Radio Local Area Network
RX Receiver
SRD Short Range Device
TB Technical Body
TPC Transmitter Power Control
UWB Ultra WideBand
VHF Very High Frequency
WAS Wireless Access Systems
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9 ETSI EG 203 336 V1.2.1 (2020-05)
4 Applicability of Radio Parameters
4.1 General
The essential requirements of the Radio Equipment Directive are general and do not identify specific design criteria.
ETSI HSs define criteria for fulfilling the essential requirements by providing applicable radio parameters for the
development and manufacturing of radio equipment.
The TB should identify the parameters and/or tests necessary to be specified in an HS for the radio system under
consideration to fulfil the essential requirements in article 3.2 of Directive 2014/53/EU [i.1] by considering the radio
parameters in the following clauses of the present document.
The parameters in clause 5 of the present document are the minimal set TBs should consider including in HSs. These
parameters are relevant for most equipment, but TBs may consider including additional parameters where relevant. The
order of the parameters is not significant.
TBs not including one or more of the parameters in clause 5, or including additional parameters, should include a
technical justification of such deviation from the present document in the HS or in a referenced separate ETSI
deliverable.
The guidance in clause 6 applies when producing an HS under article 3.1(b) of Directive 2014/53/EU [i.1] covering the
ElectroMagnetic Compatibility (EMC) aspects of radio equipment.
Any differences from terminology used in the present document should be clarified in the HS or in a separate ETSI
deliverable.
When drafting HSs, relevant ETSI TBs should take into consideration all applicable CEPT/ECC deliverables.
4.2 Additional Information required
4.2.1 Operating frequency range
The operating frequency range consists of the radio frequency band(s) over which the transmitter and receiver operate
in accordance with the intended use of the equipment, as referred to in Article 10(8) of the Radio Equipment
Directive [i.1]:
"Manufacturers shall ensure that the radio equipment is accompanied by instructions and safety information in a
language which can be easily understood by consumers and other end-users, as determined by the Member State
concerned. Instructions shall include the information required to use radio equipment in accordance with its
intended use. …
The following information shall also be included in the case of radio equipment intentionally emitting radio waves:
(a) frequency band(s) in which the radio equipment operates;
(b) maximum radio-frequency power transmitted in the frequency band(s) in which the radio equipment operates."
However, this type of information is not part of the normative requirements included in the HSs covering article 3.1(b)
and article 3.2 of Directive 2014/53/EU, which are within the scope of the present document.
4.2.2 Other information
At the discretion of the TB, other information may be required, for example to facilitate testing. Informative annexes
may be included where appropriate.
TBs should not include requirements for manufacturers declarations within the normative part of HSs.
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10 ETSI EG 203 336 V1.2.1 (2020-05)
5 Technical parameters for article 3.2 of Directive
2014/53/EU
5.1 General
Harmonised Standards (HSs) are not intended to specify how products are designed but how they respond in the
presence of various external stimuli (simulating other spectrum users and interference). An EUT in an HS should be
regarded as a "black box".
Some equipment may implement features relevant to article 3.2 using embedded software. Where appropriate, TBs
should include provisions in an HS that prevent unintended configurations potentially leading to non-conformity with
article 3.2.
An "Environmental Profile" clause should be included which indicates that technical requirements should be met
throughout the environmental conditions indicated in the HS. Example text is provided in the skeleton document for
HSs available from the ETSI web site.
The Radio Equipment Directive (RED) does not contain an equivalent of "Essential Radio Test Suites" from annex III
of Directive 1999/5/EC [i.8]. Nevertheless, in order to ensure repeatability, HSs should specify, when necessary, test
procedures and corresponding test conditions.
5.2 Transmitter parameters under article 3.2 of Directive
2014/53/EU
5.2.1 General
The essential requirement in article 3.2 of Directive 2014/53/EU [i.1] states:
"Radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio spectrum in
order to avoid harmful interference."
When deciding which transmitter parameters to include in the HS, TBs should consider both in-band and adjacent-band.
Relevant Electronic Communications Committee (ECC) and/or European Union (EU) deliverables may provide useful
information.
In order to facilitate the application of HSs, the technical conditions attached to spectrum regulations (including
conditions to support a general licence) should be taken into consideration when drafting the HS compliance conditions.
Justification for the requirements in relation to transmitters is given by recital 10 of the Directive which states:
"…when the transmitter is properly installed, maintained and used for its intended purpose it generates radio waves
emissions that do not create harmful interference, while unwanted radio waves emissions generated by the transmitter
(e.g. in adjacent channels) with a potential negative impact on the goals of radio spectrum policy should be limited to
such a level that, according to the state of the art, harmful interference is avoided;"
Some equipment types may have a number of different operational transmission modes with different spectrum usages.
The HS should be developed such that compliance with the essential requirements is ensured when operating in any
operational mode.
5.2.2 Transmitter power limits
HSs may include transmitter power limits. However, TBs should note that these are defined in national Radio Interface
Specifications (RIS) and also in individual or general licence authorizations. Furthermore, TBs should be aware that
there may be relevant ECC and EU deliverables.
The transmitter power limits may include a minimum range of Transmitter Power Control (TPC) (see clause 5.4 on
interference mitigation techniques).
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11 ETSI EG 203 336 V1.2.1 (2020-05)
Transmitter power limits may be specified and measured using a "spectrum mask" (clause 5.2.4) or as a total power in
the transmit channel.
For devices without an antenna connector, the maximum power allowed may be specified as Total Radiated Power,
ERP or EIRP.
5.2.3 Transmitter power accuracy
When transmitter power is regulated, e.g. in the station licence, the ability of a transmitter to remain accurate in its
expected environment should be considered for inclusion in an HS. It should be defined as a percentage (or a ratio in
dB) of the nominal or mandated value.
When regulatory limits imply only a maximum emission limit (e.g. products that operate under a general licence
regime), this parameter need not be considered for inclusion in an HS.
5.2.4 Transmitter Spectrum mask
"Transmitter Spectrum mask" is a generic term for defining transmitter spectral power requirements by specifying
permitted power levels as a function of frequency.
Transmit requirements should be specified in terms of:
• transmit power (clause 5.2.2); and
• unwanted emissions in:
- the Out Of Band (OOB) domain (clause 5.2.7.2);
- the spurious domain (clause 5.2.7.3).
TBs may choose to specify the above parameters by the means of a transmitter spectrum mask.
A transmitter spectrum mask may be defined as absolute terms, or relative to the measured transmitter output and
should be consistent with values used in ECC spectrum studies.
In the case of emissions significantly narrower than the operating band, TBs should consider the following guidance
when setting transmitter spectrum masks:
• a transmitter spectrum mask should be consistent with the operating channel size or the occupied bandwidth of
the transmitted signal;
• should extend at least over the entire OOB domain;
• measurement bandwidths associated with the mask should be specified;
• detector modes and any other relevant spectrum analyser setting should be specified.
In the case where the bandwidth of emissions is similar to the allocated frequency band for the system/technology then
other considerations may apply. Particular attention should be paid to equipment such as multi-channel amplifiers to
ensure OOB emissions do not interfere with equipment operating in adjacent frequency bands.
5.2.5 Transmitter frequency stability
Frequency stability impacts the ability of the radio system transmitter to occupy, in all specified operating conditions, a
bandwidth minimally larger than its own assigned portion of frequency (e.g. a channel) or occupied bandwidth.
Frequency stability may be specified relative to the actual operating frequency where the system operates (e.g. in parts
per million or a percentage of the assigned/occupied bandwidth) or expressed as an absolute value, over a range of
temperature, voltage and, where appropriate, time period.
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12 ETSI EG 203 336 V1.2.1 (2020-05)
5.2.6 Transmitter intermodulation attenuation
The transmitter intermodulation attenuation is a measure of the capability of a transmitter to inhibit the generation of
signals in its non-linear elements caused by the presence of the transmitter power and an interfering signal entering the
transmitter via its antenna.
TBs should consider specifying this parameter for base stations where use on shared radio sites is foreseen. TBs should
also consider specifying this parameter for all equipment designed for use in particularly dense usage scenarios, for
example Public Protection and Disaster Relief (PPDR) where very high levels of quality of service are required.
5.2.7 Transmitter unwanted emissions
5.2.7.1 General
Transmitter unwanted emissions are specified as OOB and spurious emissions, for further details see
CEPT/ECC/Recommendation (02)05 [i.6].
5.2.7.2 Transmitter unwanted emissions in the out of band domain
The level of emissions in the OOB domain affects the ability of other equipment to operate in adjacent spectrum. TBs
may specify OOB emission limits by defining a transmitter spectrum mask (see clause 5.2.4) or adjacent and alternate
channel power requirements (see figure 1) based upon expected separation distances.
5.2.7.3 Transmitter unwanted emissions in the spurious domain
The limits specified in HSs for unwanted emissions in the spurious domain should respect those in
CEPT/ERC/Recommendation 74-01E [i.2]. Where deviation from these limits is necessary, a justification should be
provided, taking into account CEPT advice.
Where applicable, radiated limits for cabinet radiation should be specified.
NOTE: This parameter is technically different from the EMC "radiation" parameter (see annex B).
5.2.8 Transmitter time domain characteristics
The actual value(s) of time domain characteristics may have been defined in relevant coexistence studies and in
consequential relevant EC Decisions, ECC Decisions or ECC Recommendations.
Time domain characteristics (e.g. the duty cycle, turn-on and turn-off, frequency hopping cycle, dynamic changes of
modulation scheme and others) of a transmitter, may impact the ability of the EUT to share spectrum with other EUTs
of similar or dissimilar systems. Therefore, the transmitter time domain characteristics should be considered by the TB
for inclusion in the HS.
5.2.9 Transmitter transients
For transmitter systems that do not transmit continuously the TB should consider the impact of transients that occur
during the turn on and turn off of the transmission envelope. This may affect coexistence with other systems. Therefore,
the impact of transmitter transients should be considered by the TB for inclusion in the HS.
5.3 Receiver parameters under article 3.2 of Directive
2014/53/EU
5.3.1 General
The receiver parameters in this clause should be considered when producing HSs that aim to cover the essential
requirements in article 3.2 of Directive 2014/53/EU [i.1].
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13 ETSI EG 203 336 V1.2.1 (2020-05)
The intention of the essential requirements in article 3.2 of Directive 2014/53/EU [i.1] in relation to a receiver is explained in
recitals 10 and 11 of the Directive which state:
".in the case of a receiver, it has a level of performance that allows it to operate as intended and protects it against the
risk of harmful interference, in particular from shared or adjacent channels, and, in so doing, supports improvements in
the efficient use of shared or adjacent channels.
Although receivers do not themselves cause harmful interference, reception capabilities are an increasingly important
factor in ensuring the efficient use of radio spectrum by way of an increased resilience of receivers against harmful
interference and unwanted signals on the basis of the relevant essential requirements of Union harmonisation
legislation."
When selecting receiver parameters for inclusion in an HS, TBs should consider the influence of possible unwanted
signals on the receiver's performance, in particular from adjacent channels or spectrum. If a relevant ECC coexistence
study recommends a certain level of receiver performance, then this should also be taken into consideration when
drafting the HS.
In cases where it is not possible to use some or all of the parameters described in the following clauses, alternative
parameters can be used. An example is provided in ETSI TS 103 567 [i.13], which describes a concept and parameters
suitable for UWB and potentially applicable to certain types of SRD equipment. This should be addressed on a case-by-
case basis and justified by the TB (see clause 4.1).
5.3.2 Receiver sensitivity
5.3.2.1 General
Receiver sensitivity is the ability to receive a specified wanted signal level while providing a pre-determined level of
performance.
Receiver sensitivity should be considered for inclusion in HSs because:
• good sensitivity is generally valuable in minimizing interference as it allows the corresponding transmitter
power to be lower for a particular link budget (see note);
• knowledge of sensitivity may be needed to act as a performance reference point when specifying other
parameters;
• knowing the sensitivity of receivers is essential when planning coverage areas for the siting of wide area
transmitters, e.g. cellular base stations and broadcast transmitters, or the link budget calculation of fixed links
for reaching the expected availability and QoS.
NOTE: As sensitivity is often a trade-off with other receiver parameters, TBs may need to take into account that a
more sensitive receiver is not always beneficial for the application concerned. For example, a highly
sensitive receiver may result in an excessive link budget potentially resulting in increased susceptibility to
interference [i.12].
TBs should specify receiver sensitivity for integral-antenna equipment (in particular for mobile telephones and
communication equipment used in safety of life applications) to ensure that the antenna performance is included in the
assessment.
5.3.2.2 Applicability considerations
Where the HS requires equipment to operate sharing and interference mitigation techniques based on received signals,
such as (but not only) LBT, DAA, DFS, or Adaptivity, that require the receiver to be able to detect signals down to a
specified level (often derived by ECC sharing and compatibility studies), a separate sensitivity requirement may not be
relevant for assessing spectrum efficiency.
For certain other systems the TB may decide not to specify receiver sensitivity as a separate parameter where it may not
contribute to the spectrum efficiency of the system under consideration. Such decisions should be clearly justified by
the TB.
Including receiver sensitivity as a measure of spectrum efficiency may not be relevant where this is defined indirectly
by other parameters. This should be addressed on a case-by-case basis and justified by the TB (see clause 4.1).
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14 ETSI EG 203 336 V1.2.1 (2020-05)
5.3.2.3 Desensitization
Desensitization is a degradation of the receiver sensitivity caused by the presence of an unwanted signal.
As desensitization is a receiver effect addressed by other parameters, its inclusion as a separate parameter in an HS is
not required.
5.3.3 Receiver co-channel rejection
Receiver co-channel rejection is a measure of the receiver's ability to receive a wanted signal without exceeding a
pre-defined degradation, due to the presence of an unwanted signal, both signals being at the nominal frequency of the
receiver.
Receiver co-channel rejection is an essential parameter in frequency planning, in particular to enable the spatial re-use
of the same frequency, e.g. in nearby geographic areas or in other sectors/directions.
Therefore, consideration should be given to specifying receiver co-channel rejection.
NOTE: Spatial reuse is also affected by system planning factors which may include: choice of modulation
scheme, antenna diversity and antenna beam steering. Adequate co-channel rejection performance is an
important receiver parameter as it can make it possible to increase the number of communication channels
available for use and thus support a more efficient use of the spectrum.
5.3.4 Receiver Selectivity
5.3.4.1 General
Receiver selectivity is a measure of a receiver's ability to receive a wanted signal in the presence of an unwanted signal
outside its operating bandwidth, e.g. on an adjacent channel or frequency or on a frequency outside its operating band.
It is recognized that there are many ways of specifying receiver selectivity as a technical parameter which may be used
in particular cases. The choice of how to satisfy the requirements of specifying receiver selectivity in an HS is left to the
individual TB to formulate however they should identify in the HS which parameters cover receiver selectivity.
TBs may combine the requirements of receiver adjacent channel/adjacent band selectivity and blocking performance
into a single requirement, if considered appropriate.
5.3.4.2 Receiver adjacent channel selectivity (adjacent band selectivity)
5.3.4.2.1 Receiver adjacent channel selectivity
Receiver adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted signal, without
exceeding a given degradation, due to the presence of an unwanted signal, in the adjacent channel (see figure 1).
NOTE: This parameter is sometimes referred to as adjacent channel rejection.
TBs should consider the usage scenario of the receiver, for example in channelized use the requirements for selectivity
may differ from scenarios without channelization. Also mixed bandwidth scenarios may require different selectivity
measures.
5.3.4.2.2 Receiver adjacent band selectivity
Receiver adjacent band selectivity is a measure of the capability of the receiver to receive a wanted signal, without
exceeding a given degradation, due to the presence of an unwanted signal, near the band edges of the operating band but
within the adjacent band.
TBs should consider when specifying adjacent band selectivity requirements that there may be services operating in the
upper and lower adjacent bands with differing technical characteristics and as such the technical requirements for
selectivity may need to be different in each case.
ETSI
15 ETSI EG 203 336 V1.2.1 (2020-05)
5.3.4.3 Receiver blocking
Receiver blocking is a measure of the capability of the receiver to receive a wanted signal without exceeding a given
degradation due to the presence of an unwanted input signal at any frequency other than those of the spurious responses
or of the adjacent channels.
TBs should recommend practical measurement methods as testing at "any frequency" is clearly an unbounded
requirement.
Where receiver spurious response rejection and receiver blocking are both specified, receiver blocking should usually
be specified at a more stringent level than that specified (see note in clause 5.3.4.4) for receiver spurious response
rejection (clause 5.3.4.4) at frequencies relatively far removed from the operating frequency.
TBs should include a receiver blocking parameter in HSs.
5.3.4.4 Receiver spurious response rejection
Receiver spurious response rejection is a measure of the capability of the receiver to receive a wanted signal without
exceeding a given degradation due to the presence of an unwanted signal at any frequency at which a response is
obtained.
The frequencies of the adjacent signals (channels) are excluded. TBs should specify the frequency range over which this
requirement should be evaluated.
TBs may specify a frequency search method to identify the specific frequencies at which spurious responses occur.
NOTE: TBs may consider specifically identifying image-rejection and intermediate-frequency rejection as
particular cases of receiver spurious responses. This may be done as part of the method of measurement
or by setting specific limits for these particular cases. In the case of direct conversion receivers that do not
have an image respon
...

SLOVENSKI STANDARD
01-julij-2020
Vodilo za izbiro tehničnih parametrov za izdelavo harmoniziranih standardov, ki
zajemajo člen 3.1(b) in člen 3.2 direktive 2014/53/EU
Guide for the selection of technical parameters for the production of Harmonised
Standards covering article 3.1(b) and article 3.2 of Directive 2014/53/EU
Ta slovenski standard je istoveten z: ETSI EG 203 336 V1.2.1 (2020-05)
ICS:
01.120 Standardizacija. Splošna Standardization. General
pravila rules
33.020 Telekomunikacije na splošno Telecommunications in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI GUIDE
Guide for the selection of technical parameters for the
production of Harmonised Standards
covering article 3.1(b) and article 3.2 of Directive 2014/53/EU

2 ETSI EG 203 336 V1.2.1 (2020-05)

Reference
REG/ERM-587
Keywords
harmonised standard, radio, receiver, regulation,
transmitter
ETSI
650 Route des Lucioles
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Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

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ETSI
3 ETSI EG 203 336 V1.2.1 (2020-05)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Applicability of Radio Parameters . 9
4.1 General . 9
4.2 Additional Information required . 9
4.2.1 Operating frequency range . 9
4.2.2 Other information . 9
5 Technical parameters for article 3.2 of Directive 2014/53/EU . 10
5.1 General . 10
5.2 Transmitter parameters under article 3.2 of Directive 2014/53/EU . 10
5.2.1 General . 10
5.2.2 Transmitter power limits . 10
5.2.3 Transmitter power accuracy . 11
5.2.4 Transmitter Spectrum mask . 11
5.2.5 Transmitter frequency stability . 11
5.2.6 Transmitter intermodulation attenuation . 12
5.2.7 Transmitter unwanted emissions . 12
5.2.7.1 General . 12
5.2.7.2 Transmitter unwanted emissions in the out of band domain . 12
5.2.7.3 Transmitter unwanted emissions in the spurious domain . 12
5.2.8 Transmitter time domain characteristics . 12
5.2.9 Transmitter transients . 12
5.3 Receiver parameters under article 3.2 of Directive 2014/53/EU . 12
5.3.1 General . 12
5.3.2 Receiver sensitivity . 13
5.3.2.1 General . 13
5.3.2.2 Applicability considerations . 13
5.3.2.3 Desensitization . 14
5.3.3 Receiver co-channel rejection . 14
5.3.4 Receiver Selectivity . 14
5.3.4.1 General . 14
5.3.4.2 Receiver adjacent channel selectivity (adjacent band selectivity) . 14
5.3.4.2.1 Receiver adjacent channel selectivity . 14
5.3.4.2.2 Receiver adjacent band selectivity. 14
5.3.4.3 Receiver blocking . 15
5.3.4.4 Receiver spurious response rejection . 15
5.3.4.5 Receiver radio-frequency intermodulation . 15
5.3.5 Receiver unwanted emissions in the spurious domain . 16
5.3.6 Other receiver effects . 16
5.3.6.1 Receiver dynamic range . 16
5.3.6.2 Reciprocal mixing . 16
5.4 Protocol elements, interference mitigation techniques and type of modulation . 17
5.4.1 General . 17
ETSI
4 ETSI EG 203 336 V1.2.1 (2020-05)
5.4.2 Transmitter Power Control (TPC) . 17
5.4.3 Listen Before Talk (LBT) . 17
5.4.4 Equipment operating under the control of a network . 17
5.5 Antennas . 18
6 Technical parameters for article 3.1(b) (EMC) of Directive 2014/53/EU . 18
6.1 General . 18
6.2 Exclusion bands . 19
6.3 Combined equipment within the scope of Directive 2014/53/EU . 19
7 Structure of Harmonised Standards . 19
7.1 General . 19
7.2 Measurement information . 20
7.3 Scope . 20
7.4 Structure of the ETSI EN 301 489 series of EMC standards . 20
Annex A: Harmonised Standard Skeleton Document . 21
Annex B: Principles of the difference between radio and EMC requirements . 22
Annex C: Change History . 23
C.1 Differences between V1.1.1 and V1.2.1. 23
Annex D: Bibliography . 24
History . 25

ETSI
5 ETSI EG 203 336 V1.2.1 (2020-05)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This ETSI Guide (EG) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio
spectrum Matters (ERM).
Modal verbs terminology
In the present document "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
The present document reflects current understanding of this highly technical subject matter and is subject to change.
Therefore, it should be treated as guidance rather than a formal reference for judging the content of Harmonised
Standards.
It should be noted that this is not a mandatory document, transmitters and receivers should be assessed on their expected
use and appropriate parameters selected by the Technical Body.

ETSI
6 ETSI EG 203 336 V1.2.1 (2020-05)
1 Scope
The present document has been produced to help a Technical Body (TB) to produce a Harmonised Standard (HS)
covering the conformity of radio equipment with the essential requirements in articles 3.1(b) and 3.2 of the Radio
Equipment Directive (Directive 2014/53/EU [i.1]).
NOTE 1: Article 3.1(b) of Directive 2014/53/EU [i.1] states:
"Radio equipment shall be constructed so as to ensure….an adequate level of electromagnetic compatibility as set
out in Directive 2014/30/EU."
NOTE 2: Article 3.2 of Directive 2014/53/EU [i.1] states:
"Radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio
spectrum in order to avoid harmful interference."
The present document does not cover the production of HSs covering article 3.1(a) of Directive 2014/53/EU [i.1] which
is the responsibility of CENELEC and article 3.3 which requires delegated acts by the European Commission (EC).
2 References
2.1 Normative references
Normative references are not applicable in the present document.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC (OJ L153, 22.5.2014, p62).
[i.2] CEPT/ERC/Recommendation 74-01E: "Unwanted emissions in the spurious domain".
[i.3] Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the
harmonisation of the laws of the Member States relating to electromagnetic compatibility
(OJ L96 29.3.2014, p96).
[i.4] Void.
[i.5] Void.
[i.6] CEPT/ECC/Recommendation (02)05: "Unwanted emissions".
[i.7] Void.
[i.8] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (OJ L91, 7.4.1999).
ETSI
7 ETSI EG 203 336 V1.2.1 (2020-05)
[i.9] ETSI EN 300 676-1: "Ground-based VHF hand-held, mobile and fixed radio transmitters,
receivers and transceivers for the VHF aeronautical mobile service using amplitude modulation;
Part 1: Technical characteristics and methods of measurement".
[i.10] ETSI EN 301 489-1: "ElectroMagnetic Compatibility (EMC) standard for radio equipment and
services; Part 1: Common technical requirements; Harmonised Standard for ElectroMagnetic
Compatibility".
[i.11] ETSI EG 203 367: "Guide to the application of harmonised standards covering articles 3.1b and
3.2 of the Directive 2014/53/EU (RED) to multi-radio and combined radio and non-radio
equipment".
[i.12] RSPG 19-031: "RSPG Report on European Spectrum Strategy".
[i.13] ETSI TS 103 567 (V1.1.1): "Requirements on signal interferer handling".
[i.14] ETSI EN 301 489 (all parts): "ElectroMagnetic Compatibility (EMC) standard for radio equipment
and services".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in article 2 of Directive 2014/53/EU [i.1] and the following
apply:
adaptive frequency agility: technique used by some radio transmitters to avoid transmission in channels that are
already occupied by other spectrum users
adjacent channel: channel offset from the wanted channel by the channel spacing
NOTE: See figure 1.
f
c
Lower Wanted Upper Upper
Lower
Alternate Channel Adjacent Alternate
Adjacent
Figure 1: Adjacent and alternate channel/signal definitions
adjacent band: frequency band adjacent to the operating band
adjacent signal: signal adjacent to the wanted signal
alternate channels: channel(s) offset from the wanted channel by twice the channel spacing
NOTE: See figure 1.
cabinet radiation: emissions from the equipment, radiated from the enclosure port, other than those present at the
antenna port
ETSI
8 ETSI EG 203 336 V1.2.1 (2020-05)
detect and avoid: mechanism which mitigates interference potential by avoiding use of frequencies upon detection of
other transmissions on those frequencies
jitter (phase noise): short term variations of the significant instants of a digital signal from their reference positions in
time
operating band: frequency band in which the EUT is intended to transmit and/or receive
transmitter spectrum mask: maximum allowed power emitted by the transmitter as a function of frequency, either
expressed in power density versus frequency, or in total power within defined frequency band
3.2 Symbols
For the purposes of the present document, the following symbols apply:
f Carrier frequency
c
F Nominal frequency of the receiver
rx
F Intermediate frequency of the receiver
if
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ADC Analogue to Digital Converter
ADCO ADministrative COoperation groups
AFA Adaptive Frequency Agility
AM Amplitude Modulation
CENELEC European Committee for Electrotechnical Standardization
CEPT European Conference of Postal and Telecommunications Administrations
CISPR International Special Committee on Radio Interference (a subcommittee of IEC)
DAA Detect And Avoid
DDC Digital Down Conversion
DFS Dynamic Frequency Selection
EC European Commission
ECC Electronic Communications Committee
EIRP Effective Isotropic Radiated Power
EMC ElectroMagnetic Compatibility
ERP Effective Radiated Power
ESO European Standards Organization
EU European Union
EUT Equipment Under Test
HS Harmonised Standard
IEC International Electrotechnical Commission
LBT Listen Before Talk
LO Local Oscillator
OCG Operational Co-ordination Group
OOB Out Of Band
PPDR Public Protection and Disaster Relief
QoS Quality of Service
RED Radio Equipment Directive (2014/53/EU [i.1])
RF Radio Frequency
RIS Radio Interface Specifications
RLAN Radio Local Area Network
RX Receiver
SRD Short Range Device
TB Technical Body
TPC Transmitter Power Control
UWB Ultra WideBand
VHF Very High Frequency
WAS Wireless Access Systems
ETSI
9 ETSI EG 203 336 V1.2.1 (2020-05)
4 Applicability of Radio Parameters
4.1 General
The essential requirements of the Radio Equipment Directive are general and do not identify specific design criteria.
ETSI HSs define criteria for fulfilling the essential requirements by providing applicable radio parameters for the
development and manufacturing of radio equipment.
The TB should identify the parameters and/or tests necessary to be specified in an HS for the radio system under
consideration to fulfil the essential requirements in article 3.2 of Directive 2014/53/EU [i.1] by considering the radio
parameters in the following clauses of the present document.
The parameters in clause 5 of the present document are the minimal set TBs should consider including in HSs. These
parameters are relevant for most equipment, but TBs may consider including additional parameters where relevant. The
order of the parameters is not significant.
TBs not including one or more of the parameters in clause 5, or including additional parameters, should include a
technical justification of such deviation from the present document in the HS or in a referenced separate ETSI
deliverable.
The guidance in clause 6 applies when producing an HS under article 3.1(b) of Directive 2014/53/EU [i.1] covering the
ElectroMagnetic Compatibility (EMC) aspects of radio equipment.
Any differences from terminology used in the present document should be clarified in the HS or in a separate ETSI
deliverable.
When drafting HSs, relevant ETSI TBs should take into consideration all applicable CEPT/ECC deliverables.
4.2 Additional Information required
4.2.1 Operating frequency range
The operating frequency range consists of the radio frequency band(s) over which the transmitter and receiver operate
in accordance with the intended use of the equipment, as referred to in Article 10(8) of the Radio Equipment
Directive [i.1]:
"Manufacturers shall ensure that the radio equipment is accompanied by instructions and safety information in a
language which can be easily understood by consumers and other end-users, as determined by the Member State
concerned. Instructions shall include the information required to use radio equipment in accordance with its
intended use. …
The following information shall also be included in the case of radio equipment intentionally emitting radio waves:
(a) frequency band(s) in which the radio equipment operates;
(b) maximum radio-frequency power transmitted in the frequency band(s) in which the radio equipment operates."
However, this type of information is not part of the normative requirements included in the HSs covering article 3.1(b)
and article 3.2 of Directive 2014/53/EU, which are within the scope of the present document.
4.2.2 Other information
At the discretion of the TB, other information may be required, for example to facilitate testing. Informative annexes
may be included where appropriate.
TBs should not include requirements for manufacturers declarations within the normative part of HSs.
ETSI
10 ETSI EG 203 336 V1.2.1 (2020-05)
5 Technical parameters for article 3.2 of Directive
2014/53/EU
5.1 General
Harmonised Standards (HSs) are not intended to specify how products are designed but how they respond in the
presence of various external stimuli (simulating other spectrum users and interference). An EUT in an HS should be
regarded as a "black box".
Some equipment may implement features relevant to article 3.2 using embedded software. Where appropriate, TBs
should include provisions in an HS that prevent unintended configurations potentially leading to non-conformity with
article 3.2.
An "Environmental Profile" clause should be included which indicates that technical requirements should be met
throughout the environmental conditions indicated in the HS. Example text is provided in the skeleton document for
HSs available from the ETSI web site.
The Radio Equipment Directive (RED) does not contain an equivalent of "Essential Radio Test Suites" from annex III
of Directive 1999/5/EC [i.8]. Nevertheless, in order to ensure repeatability, HSs should specify, when necessary, test
procedures and corresponding test conditions.
5.2 Transmitter parameters under article 3.2 of Directive
2014/53/EU
5.2.1 General
The essential requirement in article 3.2 of Directive 2014/53/EU [i.1] states:
"Radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio spectrum in
order to avoid harmful interference."
When deciding which transmitter parameters to include in the HS, TBs should consider both in-band and adjacent-band.
Relevant Electronic Communications Committee (ECC) and/or European Union (EU) deliverables may provide useful
information.
In order to facilitate the application of HSs, the technical conditions attached to spectrum regulations (including
conditions to support a general licence) should be taken into consideration when drafting the HS compliance conditions.
Justification for the requirements in relation to transmitters is given by recital 10 of the Directive which states:
"…when the transmitter is properly installed, maintained and used for its intended purpose it generates radio waves
emissions that do not create harmful interference, while unwanted radio waves emissions generated by the transmitter
(e.g. in adjacent channels) with a potential negative impact on the goals of radio spectrum policy should be limited to
such a level that, according to the state of the art, harmful interference is avoided;"
Some equipment types may have a number of different operational transmission modes with different spectrum usages.
The HS should be developed such that compliance with the essential requirements is ensured when operating in any
operational mode.
5.2.2 Transmitter power limits
HSs may include transmitter power limits. However, TBs should note that these are defined in national Radio Interface
Specifications (RIS) and also in individual or general licence authorizations. Furthermore, TBs should be aware that
there may be relevant ECC and EU deliverables.
The transmitter power limits may include a minimum range of Transmitter Power Control (TPC) (see clause 5.4 on
interference mitigation techniques).
ETSI
11 ETSI EG 203 336 V1.2.1 (2020-05)
Transmitter power limits may be specified and measured using a "spectrum mask" (clause 5.2.4) or as a total power in
the transmit channel.
For devices without an antenna connector, the maximum power allowed may be specified as Total Radiated Power,
ERP or EIRP.
5.2.3 Transmitter power accuracy
When transmitter power is regulated, e.g. in the station licence, the ability of a transmitter to remain accurate in its
expected environment should be considered for inclusion in an HS. It should be defined as a percentage (or a ratio in
dB) of the nominal or mandated value.
When regulatory limits imply only a maximum emission limit (e.g. products that operate under a general licence
regime), this parameter need not be considered for inclusion in an HS.
5.2.4 Transmitter Spectrum mask
"Transmitter Spectrum mask" is a generic term for defining transmitter spectral power requirements by specifying
permitted power levels as a function of frequency.
Transmit requirements should be specified in terms of:
• transmit power (clause 5.2.2); and
• unwanted emissions in:
- the Out Of Band (OOB) domain (clause 5.2.7.2);
- the spurious domain (clause 5.2.7.3).
TBs may choose to specify the above parameters by the means of a transmitter spectrum mask.
A transmitter spectrum mask may be defined as absolute terms, or relative to the measured transmitter output and
should be consistent with values used in ECC spectrum studies.
In the case of emissions significantly narrower than the operating band, TBs should consider the following guidance
when setting transmitter spectrum masks:
• a transmitter spectrum mask should be consistent with the operating channel size or the occupied bandwidth of
the transmitted signal;
• should extend at least over the entire OOB domain;
• measurement bandwidths associated with the mask should be specified;
• detector modes and any other relevant spectrum analyser setting should be specified.
In the case where the bandwidth of emissions is similar to the allocated frequency band for the system/technology then
other considerations may apply. Particular attention should be paid to equipment such as multi-channel amplifiers to
ensure OOB emissions do not interfere with equipment operating in adjacent frequency bands.
5.2.5 Transmitter frequency stability
Frequency stability impacts the ability of the radio system transmitter to occupy, in all specified operating conditions, a
bandwidth minimally larger than its own assigned portion of frequency (e.g. a channel) or occupied bandwidth.
Frequency stability may be specified relative to the actual operating frequency where the system operates (e.g. in parts
per million or a percentage of the assigned/occupied bandwidth) or expressed as an absolute value, over a range of
temperature, voltage and, where appropriate, time period.
ETSI
12 ETSI EG 203 336 V1.2.1 (2020-05)
5.2.6 Transmitter intermodulation attenuation
The transmitter intermodulation attenuation is a measure of the capability of a transmitter to inhibit the generation of
signals in its non-linear elements caused by the presence of the transmitter power and an interfering signal entering the
transmitter via its antenna.
TBs should consider specifying this parameter for base stations where use on shared radio sites is foreseen. TBs should
also consider specifying this parameter for all equipment designed for use in particularly dense usage scenarios, for
example Public Protection and Disaster Relief (PPDR) where very high levels of quality of service are required.
5.2.7 Transmitter unwanted emissions
5.2.7.1 General
Transmitter unwanted emissions are specified as OOB and spurious emissions, for further details see
CEPT/ECC/Recommendation (02)05 [i.6].
5.2.7.2 Transmitter unwanted emissions in the out of band domain
The level of emissions in the OOB domain affects the ability of other equipment to operate in adjacent spectrum. TBs
may specify OOB emission limits by defining a transmitter spectrum mask (see clause 5.2.4) or adjacent and alternate
channel power requirements (see figure 1) based upon expected separation distances.
5.2.7.3 Transmitter unwanted emissions in the spurious domain
The limits specified in HSs for unwanted emissions in the spurious domain should respect those in
CEPT/ERC/Recommendation 74-01E [i.2]. Where deviation from these limits is necessary, a justification should be
provided, taking into account CEPT advice.
Where applicable, radiated limits for cabinet radiation should be specified.
NOTE: This parameter is technically different from the EMC "radiation" parameter (see annex B).
5.2.8 Transmitter time domain characteristics
The actual value(s) of time domain characteristics may have been defined in relevant coexistence studies and in
consequential relevant EC Decisions, ECC Decisions or ECC Recommendations.
Time domain characteristics (e.g. the duty cycle, turn-on and turn-off, frequency hopping cycle, dynamic changes of
modulation scheme and others) of a transmitter, may impact the ability of the EUT to share spectrum with other EUTs
of similar or dissimilar systems. Therefore, the transmitter time domain characteristics should be considered by the TB
for inclusion in the HS.
5.2.9 Transmitter transients
For transmitter systems that do not transmit continuously the TB should consider the impact of transients that occur
during the turn on and turn off of the transmission envelope. This may affect coexistence with other systems. Therefore,
the impact of transmitter transients should be considered by the TB for inclusion in the HS.
5.3 Receiver parameters under article 3.2 of Directive
2014/53/EU
5.3.1 General
The receiver parameters in this clause should be considered when producing HSs that aim to cover the essential
requirements in article 3.2 of Directive 2014/53/EU [i.1].
ETSI
13 ETSI EG 203 336 V1.2.1 (2020-05)
The intention of the essential requirements in article 3.2 of Directive 2014/53/EU [i.1] in relation to a receiver is explained in
recitals 10 and 11 of the Directive which state:
".in the case of a receiver, it has a level of performance that allows it to operate as intended and protects it against the
risk of harmful interference, in particular from shared or adjacent channels, and, in so doing, supports improvements in
the efficient use of shared or adjacent channels.
Although receivers do not themselves cause harmful interference, reception capabilities are an increasingly important
factor in ensuring the efficient use of radio spectrum by way of an increased resilience of receivers against harmful
interference and unwanted signals on the basis of the relevant essential requirements of Union harmonisation
legislation."
When selecting receiver parameters for inclusion in an HS, TBs should consider the influence of possible unwanted
signals on the receiver's performance, in particular from adjacent channels or spectrum. If a relevant ECC coexistence
study recommends a certain level of receiver performance, then this should also be taken into consideration when
drafting the HS.
In cases where it is not possible to use some or all of the parameters described in the following clauses, alternative
parameters can be used. An example is provided in ETSI TS 103 567 [i.13], which describes a concept and parameters
suitable for UWB and potentially applicable to certain types of SRD equipment. This should be addressed on a case-by-
case basis and justified by the TB (see clause 4.1).
5.3.2 Receiver sensitivity
5.3.2.1 General
Receiver sensitivity is the ability to receive a specified wanted signal level while providing a pre-determined level of
performance.
Receiver sensitivity should be considered for inclusion in HSs because:
• good sensitivity is generally valuable in minimizing interference as it allows the corresponding transmitter
power to be lower for a particular link budget (see note);
• knowledge of sensitivity may be needed to act as a performance reference point when specifying other
parameters;
• knowing the sensitivity of receivers is essential when planning coverage areas for the siting of wide area
transmitters, e.g. cellular base stations and broadcast transmitters, or the link budget calculation of fixed links
for reaching the expected availability and QoS.
NOTE: As sensitivity is often a trade-off with other receiver parameters, TBs may need to take into account that a
more sensitive receiver is not always beneficial for the application concerned. For example, a highly
sensitive receiver may result in an excessive link budget potentially resulting in increased susceptibility to
interference [i.12].
TBs should specify receiver sensitivity for integral-antenna equipment (in particular for mobile telephones and
communication equipment used in safety of life applications) to ensure that the antenna performance is included in the
assessment.
5.3.2.2 Applicability considerations
Where the HS requires equipment to operate sharing and interference mitigation techniques based on received signals,
such as (but not only) LBT, DAA, DFS, or Adaptivity, that require the receiver to be able to detect signals down to a
specified level (often derived by ECC sharing and compatibility studies), a separate sensitivity requirement may not be
relevant for assessing spectrum efficiency.
For certain other systems the TB may decide not to specify receiver sensitivity as a separate parameter where it may not
contribute to the spectrum efficiency of the system under consideration. Such decisions should be clearly justified by
the TB.
Including receiver sensitivity as a measure of spectrum efficiency may not be relevant where this is defined indirectly
by other parameters. This should be addressed on a case-by-case basis and justified by the TB (see clause 4.1).
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5.3.2.3 Desensitization
Desensitization is a degradation of the receiver sensitivity caused by the presence of an unwanted signal.
As desensitization is a receiver effect addressed by other parameters, its inclusion as a separate parameter in an HS is
not required.
5.3.3 Receiver co-channel rejection
Receiver co-channel rejection is a measure of the receiver's ability to receive a wanted signal without exceeding a
pre-defined degradation, due to the presence of an unwanted signal, both signals being at the nominal frequency of the
receiver.
Receiver co-channel rejection is an essential parameter in frequency planning, in particular to enable the spatial re-use
of the same frequency, e.g. in nearby geographic areas or in other sectors/directions.
Therefore, consideration should be given to specifying receiver co-channel rejection.
NOTE: Spatial reuse is also affected by system planning factors which may include: choice of modulation
scheme, antenna diversity and antenna beam steering. Adequate co-channel rejection performance is an
important receiver parameter as it can make it possible to increase the number of communication channels
available for use and thus support a more efficient use of the spectrum.
5.3.4 Receiver Selectivity
5.3.4.1 General
Receiver selectivity is a measure of a receiver's ability to receive a wanted signal in the presence of an unwanted signal
outside its operating bandwidth, e.g. on an adjacent channel or frequency or on a frequency outside its operating band.
It is recognized that there are many ways of specifying receiver selectivity as a technical parameter which may be used
in particular cases. The choice of how to satisfy the requirements of specifying receiver selectivity in an HS is left to the
individual TB to formulate however they should identify in the HS which parameters cover receiver selectivity.
TBs may combine the requirements of receiver adjacent channel/adjacent band selectivity and blocking performance
into a single requirement, if considered appropriate.
5.3.4.2 Receiver adjacent channel selectivity (adjacent band selectivity)
5.3.4.2.1 Receiver adjacent channel selectivity
Receiver adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted signal, without
exceeding a given degradation, due to the presence of an unwanted signal, in the adjacent channel (see figure 1).
NOTE: This parameter is sometimes referred to as adjacent channel rejection.
TBs should consider the usage scenario of the receiver, for example in channelized use the requirements for selectivity
may differ from scenarios without channelization. Also mixed bandwidth scenarios may require different selectivity
measures.
5.3.4.2.2 Receiver adjacent band selectivity
Receiver adjacent band selectivity is a measure of the capability of the receiver to receive a wanted signal, without
exceeding a given degradation, due to the presence of an unwanted signal, near the band edges of the operating band but
within the adjacent band.
TBs should consider when specifying adjacent band selectivity requirements that there may be services operating in the
upper and lower adjacent bands with differing technical characteristics and as such the technical requirements for
selectivity may need to be different in each case.
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5.3.4.3 Receiver blocking
Receiver blocking is a measure of the capability of the receiver to receive a wanted signal without exceeding a given
degradation due to the presence of an unwanted input signal at any frequency other than those of the spurious responses
or of the adjacent ch
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