SIST EN 301 390 V1.2.1:2003

• Abstract:

  To align with recent developments and agreements.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.060.30 - Radio relay and fixed satellite communications systems
• ICS: 33.100.01 - Electromagnetic compatibility in general
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 301 390 V1.2.1 (2003-11) - Fixed Radio Systems; Point-to-point and Multipoint Systems; Spurious emissions and receiver immunity limits at equipment/antenna port of Digital Fixed Radio Systems

Overview

SIST EN 301 390 V1.2.1:2003 is a European and Slovenian standard that specifies the requirements for fixed radio systems, particularly focusing on point-to-point (P-P) and point-to-multipoint (P-MP) digital fixed radio systems (DFRS). The standard outlines strict limits for spurious emissions and receiver immunity at the equipment/antenna port, aligning with recent international developments for electromagnetic compatibility (EMC) in radio communications. It helps ensure the reliable operation of DFRS in the frequency range of 9 kHz to 300 GHz and compliance with the essential requirements of European Directive 1999/5/EC (R&TTE Directive).

Key Topics

• Spurious Emissions: Defines unwanted emissions outside the assigned frequency band, including the spurious domain per ITU-R and CEPT/ERC recommendations. The standard details limits to manage interference between co-located or geographically proximate radio systems.
• Receiver Immunity: Specifies minimum immunity levels for receivers at the antenna port to prevent degradation in system performance caused by unwanted interfering signals.
• Test Methods: Establishes referenced test procedures and measurement conditions at the Tx/Rx antenna port. Emphasis is placed on feasible, cost-effective conformance testing in line with ETSI and CEPT/ERC methodologies.
• Scope and Applicability: Focuses on digital point-to-point and multipoint radio systems across frequency ranges relevant to fixed wireless applications, excluding systems operating below 30 MHz.

Applications

• Radio Relay and Fixed Satellite Communication: SIST EN 301 390 applies to a wide range of fixed wireless applications, including radio relay systems and fixed satellite communication equipment operating in regulated frequency bands.
• Network Infrastructure: The standard supports the deployment and interworking of high-capacity communication links essential for public and private telecommunications networks, cellular backhaul, and broadband access.
• Spectrum Efficiency: By enforcing spurious emission and immunity requirements, the standard enables effective use of the radio spectrum, minimizing mutual interference and facilitating coexistence with other communications services.
• Regulatory Compliance: Adherence to the defined emission and immunity limits is a critical step for manufacturers and operators to meet EMC and R&TTE Directive requirements across Europe. It helps facilitate market access and ensures robust equipment performance in diverse operational environments.

Related Standards

• ITU-R SM.329-10: Unwanted emissions in the spurious domain – foundational for definitions and limit setting.
• CEPT/ERC Recommendation 74-01: Spurious emissions – essential reference for emission limits adopted within this standard.
• CECT/ECC Recommendation 02-05: Unwanted emissions – further guidance on handling out-of-band and spurious emissions.
• ETSI EN 301 126 Series: Fixed radio systems conformance testing – referenced for approved measurement and compliance methods.
• Directive 1999/5/EC (R&TTE Directive): Essential regulatory framework for radio equipment and telecommunications terminal equipment within the European Union.

Practical Value

Implementing SIST EN 301 390 V1.2.1:2003 ensures that fixed radio systems:

• Limit harmful interference through regulated spurious emissions.
• Maintain robust receiver operation even in the presence of strong or nearby transmissions.
• Meet both European and global expectations for electromagnetic compatibility.
• Are tested using harmonized and recognized methodologies, facilitating international market acceptance.

This standard is crucial for manufacturers, operators, and integrators seeking to deploy reliable, high-performance digital fixed radio systems in today's increasingly crowded spectrum environment. By following these guidelines, stakeholders can achieve optimal spectrum utilization, enhanced system cohabitation, and assured regulatory compliance in fixed wireless communications.

Keywords: fixed radio systems, spurious emissions, receiver immunity, point-to-point radio, point-to-multipoint radio, EMC, antenna port, digital fixed radio systems, radio relay, CEPT/ERC, ITU-R, R&TTE Directive, conformance testing, spectrum efficiency.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fixed Radio Systems; Point-to-point and Multipoint Systems; Spurious emissions and receiver immunity limits at equipment/antenna port of Digital Fixed Radio Systems33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systemsICS:Ta slovenski standard je istoveten z:EN 301 390 Version 1.2.1SIST EN 301 390 V1.2.1:2003en01-december-2003SIST EN 301 390 V1.2.1:2003SLOVENSKI
STANDARD
ETSI ETSI EN 301 390 V1.2.1 (2003-11) 2
Reference REN/TM-04156 Keywords antenna, DRRS, EMC, emission, immunity ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: [e-mail] Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2003. All rights reserved.
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ETSI ETSI EN 301 390 V1.2.1 (2003-11) 3
Contents Intellectual Property Rights.4 Foreword.4 1 Scope.5 2 References.6 3 Definitions, symbols and abbreviations.7 3.1 Definitions.7 3.2 Symbols.8 3.3 Abbreviations.8 4 Transmitter spurious emissions at antenna port.9 4.1 Limits.9 4.1.1 Point-to-point equipment.9 4.1.2 Multipoint equipment with fundamental emission below 21,2 GHz.9 4.1.3 Multipoint equipment with fundamental emission above 21,2 GHz.9 5 Receiver spurious emissions at the antenna port.11 6 Spurious emissions test method.11 7 Receivers immunity at antenna port.11 7.1 Limits.11 7.2 Receiver immunity test method.12 Annex A (informative): Application of CEPT/ERC Recommendation 74-01.13 A.1 Frequency range of applicability.13 A.2 Level limits.14 A.3 Reference bandwidths.14 A.4 Detailed application of the reference bandwidths reported in table A.3.16 A.4.1 P-P and P-MP systems with fundamental emissions from 30 MHz to 1 GHz.16 A.4.2 P-P and P-MP systems with fundamental emissions from 1 GHz to 21,2 GHz.16 A.4.3 P-P systems with fundamental emissions above 21,2 GHz.17 A.4.4 P-MP systems with fundamental emissions above 21,2 GHz.17 Annex B (informative): Measurement background.18 B.1 Spectrum analyser capability.18 B.2 Application examples.19 History.25
ETSI ETSI EN 301 390 V1.2.1 (2003-11) 4
Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmission and Multiplexing (TM).
National transposition dates Date of adoption of this EN: 21 November 2003 Date of latest announcement of this EN (doa): 29 February 2004 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 August 2004 Date of withdrawal of any conflicting National Standard (dow): 31 August 2004
ETSI ETSI EN 301 390 V1.2.1 (2003-11) 5
1 Scope The term Spurious emissions is used for simplicity elsewhere in the present document but with the more broader meaning of "unwanted emissions in the spurious domain" introduced by ITU-R Recommendation SM.329-10 [1] for clarifying the Radio Regulation definitions and the application of recommended limits for all unwanted emissions; it also recommends that spurious emissions limits apply to all unwanted emissions falling in the spurious domain. Therefore the present document deals with limits for unwanted emissions in the spurious domain at antenna port of Digital Fixed Radio Systems (DFRS) as defined by ITU-R Recommendation SM.329-10 [1] and CEPT/ERC Recommendation 74-01 [4] and CEPT/ECC Recommendation 02-05 [5]. Moreover it covers immunity characteristics at receiver's antenna port. Scope of the present document is to define specific limits at antenna port for spurious emissions and receiver immunity for suitable inter-working of Digital Fixed Radio Systems (i.e. Point-to-Point and Multipoint systems) in the same or in different frequency band whenever allocated to Fixed Service in the range 9 kHz to 300 GHz. However systems with fundamental emission below 30 MHz are not considered relevant for Digital Fixed Radio Systems and are outside the scope of the present document. Spurious emissions levels and immunity performance at antenna port are also relevant to essential requirements under article 3.2 of Directive 1999/5/EC [15] on Radio equipment and Telecommunication Terminals equipment (R&TTE). The present document complements CEPT/ERC Recommendation 74-01 [4] which gives Spurious Emissions limits with particular regards to "inter Services" operations, while WG TM4 assumed that in some case more protection is required for compatibility among fixed radio systems deployed in the same geographical area. Additional considerations and background for producing the present document are: - Radio Regulations definition of spurious emissions (RR Article 1-145 [16]) is aged and give concept and applicability which do not clearly fit to digital systems; however ITU-R Recommendation SM.329-10 [1] introduced a more useful definition of "unwanted emissions in the spurious domain", which should eventually be introduced also into Radio Regulations; - ITU-R Recommendation SM.329-10 [1] considers emissions from any system, including digital modulation and allows options for the definition of the frequency boundary between out-of-band domain and spurious emissions domain. It recommends different category of level limits applicable to the Fixed Service; - ITU-R Recommendation SM.1539-1 [2] describes the application of the boundary concept between
out-of-band and spurious emission domains; - ITU-R Recommendation F.1191-2 [3] define the application of Radio Regulations and SM set of ITU-R Recommendations concepts of out-of-band, unwanted and spurious emissions to DFRS, clarify the applicability for the boundary between out-of-band and Spurious emissions domains but maintain the same possible limit options provided by ITU-R Recommendation SM.329-10 [1]; - CEPT/ERC Recommendation 74-01 [4], endorses only the more stringent Category B limits of ITU-R Recommendation SM.329-10 [1]; - after the coming into force of RTTE Directive [15] the emissions and immunity at antenna port fall under its article 3.2 requirements for "effective use of spectrum" and "avoidance of harmful interference" and they are no longer an EMC requirement; - considering the large number of TM4 deliverables it is convenient to maintain a single EN covering these parameters instead of replicating them on each single product standard, avoiding possible deviation from what required by other CEPT and ITU-R normative; - limits for spurious emissions shall be fixed in view of inter-working compatibility among various Fixed Radio Systems in same or different band exploited in the same area; - the measurement of the required limits should also be feasible in a suitable and cost effective conformance test (annex B gives also information in this field); SIST EN 301 390 V1.2.1:2003

ETSI ETSI EN 301 390 V1.2.1 (2003-11) 6
- it is necessary that DFRS receivers provide a minimum level of immunity at antenna port towards possible interference at any frequency band of practical interest; - a suitable and easy to perform criterion for DFRS receivers' immunity at antenna port may be considered the application of a CW interference. Some ETSI deliverables for DFRS, sometimes, provide limits for both "external" and "internal" spurious emissions and the latter are outside the scope of the present document. Moreover the limits for emissions given in the present document do not prevent more stringent requirement given in those deliverables for intra-system purpose (i.e. local Transmitter to Receiver interference usually referred as "internal"). In order to fix the suitable limits, in annex B, spurious emissions are analysed from the point of view of a suitable test method for conformance testing. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. [1] ITU-R Recommendation SM.329-10: "Unwanted emissions in the spurious domain". [2] ITU-R Recommendation SM.1539-1: "Variation of the boundary between the out-of-band and spurious domains required for the application of Recommendations ITU-R SM.1541 and ITU-R SM.329". [3] ITU-R Recommendation F.1191-2: "Bandwidths and unwanted emissions of digital fixed service systems". [4] CEPT/ERC Recommendation 74-01 (2002): "Spurious emissions". [5] CEPT/ECC Recommendation 02-05 (2002): "Unwanted emissions". [6] ETSI EN 301 126-1: "Fixed Radio Systems; Conformance testing; Part 1: Point-to-Point equipment - Definitions, general requirements and test procedures". [7] ETSI EN 301 126-2-1: "Fixed Radio Systems; Conformance testing; Part 2-1: Point-to-Multipoint equipment; Definitions and general requirements". [8] ETSI EN 301 126-2-2: "Fixed Radio Systems; Conformance testing; Part 2-2: Point-to-Multipoint equipment; Test procedures for FDMA systems". [9] ETSI EN 301 126-2-3: "Fixed Radio Systems; Conformance testing; Part 2-3: Point-to-Multipoint equipment; Test procedures for TDMA systems". [10] ETSI EN 301 126-2-4: "Fixed Radio Systems; Conformance testing; Part 2-4: Point-to-Multipoint equipment; Test procedures for FH-CDMA systems". [11] ETSI EN 301 126-2-5: "Fixed Radio Systems; Conformance testing; Part 2-5: Point-to-Multipoint equipment; Test procedures for DS-CDMA systems". [12] ETSI EN 301 126-2-6: "Fixed Radio Systems; Conformance testing; Part 2-6: Point-to-Multipoint equipment; Test procedures for Multi Carrier Time Division Multiple Access (MC-TDMA) systems". SIST EN 301 390 V1.2.1:2003

ETSI ETSI EN 301 390 V1.2.1 (2003-11) 7
[13] ETSI TR 101 036-1: "Fixed Radio Systems; Generic wordings for standards on DFRS (Digital Fixed Radio Systems) characteristics; Part 1: General aspects and point-to-point equipment parameters". [14] ITU-R Recommendation F.746-7: "Radio-frequency arrangements for fixed service systems". [15] 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 (R&TTE Directive). [16] ITU-R Radio Regulations (2001) Article 1. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: boundary between out-of-band and spurious domains: frequency limit that subdivides the two domains and the applicability NOTE: ITU-R Recommendations SM.329-10 [1] and SM.1539-1 [2] describe the possible application to all radio emissions. ITU-R Recommendation F.1191-2 [3] details it for Fixed Service systems. EN: European Standard (Telecommunications series) evaluation bandwidth: bandwidth where the spurious emission limits are measured (e.g. the spectrum analyser resolution bandwidth) for further normalization/integration to the reference bandwidth out-of-band domain (of an emission): the frequency range, immediately outside the necessary bandwidth but excluding the spurious domain, in which out-of-band emissions generally predominate NOTE 1: The terms "out-of-band domain" and "spurious domain" have been introduced in order to remove some inconsistency now existing between, on one hand, the definitions of the terms "out-of-band emission" and "spurious emission" in Article 1 of the RR and, on the other hand, the actual use of these terms in Appendix 3 of the RR, as revised by the World Radiocommunication Conference (WRC-2000). Out-of-band and spurious limits apply, respectively, to all unwanted emissions in the out-of-band and spurious domains. NOTE 2: Out-of-band emissions, defined based on their source, occur in the out-of-band domain and, to a lesser extent, in the spurious domain. Spurious emissions likewise may occur in the out-of-band domain as well as in the spurious domain. out-of-band emissions: ITU-R Recommendation F.1191-2 [3] defines that any unwanted emission, outside the channel bandwidth, which falls at frequencies separated from the centre frequency of the emission by less than 250 % of the relevant channel separation, where the system is intended to be used, will generally be considered out-of-band emission NOTE: See also RR Article 1-144 [16] and ITU-R Recommendation SM.329-10 [1] and CEPT/ERC Recommendation 74-01 [4]. receiver spurious emissions: spurious sent backwards to the antenna port by a receiver; sometimes they are also referenced as "spurious radiations" reference bandwidth: bandwidth where the spurious emission limits are defined, see ITU-R Recommendation SM.329-10 [1] SIST EN 301 390 V1.2.1:2003

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spurious domain (of an emission): the frequency range beyond the out-of-band domain in which spurious emissions generally predominate NOTE: The terms "out-of-band domain" and "spurious domain" have been introduced in order to remove some inconsistency now existing between, on one hand, the definitions of the terms "out-of-band emission" and "spurious emission" in Article 1 of the RR and, on the other hand, the actual use of these terms in Appendix 3 of the RR, as revised by the World Radiocommunication Conference (WRC-2000). Out-of-band and spurious limits apply, respectively, to all unwanted emissions in the out-of-band and spurious domains. spurious emissions: ITU-R Recommendation F.1191-2 [3] defines that any unwanted emission which falls at frequencies separated from the centre frequency of the emission by 250 % or more of the relevant channel separation, where the system is intended to be used, will generally be considered spurious emission NOTE: See also RR Article 1-145 [16], ITU-R Recommendation SM.329-10 [1] and CEPT/ERC Recommendation 74-01 [4]. unwanted emissions: They are composed by out-of-band and spurious emissions. See also RR Article 1-140 [16], ITU-R Recommendations SM.329-10 [1] and F.1191-2 [3]. 3.2 Symbols For the purposes of the present document, the following symbols apply: dBc deciBels to carrier mean power dBm deciBels to milliwatt GHz GigaHertz kHz kiloHertz MHz MegaHertz 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: ATe external ATtenuator ATi internal spectrum analyser input ATtenuator ATPC Automatic Transmission Power Control BER Bit Error Rate BWe evaluation BandWidth for spectral measurement (i.e. spectrum analyser resolution bandwidth) BWr reference BandWidth CS Channel Separation CW Continuous Wave DFRS Digital Fixed Radio Systems DUT Device Under Test Fc cut-off Frequency IM InterModulation i.m.p. intermodulation products MP MultiPoint (generic term including both P-MP and MP to MP mesh architectures) MS Master Station of a P-MP system P-MP Point-to-MultiPoint system P-P Point-to-Point system QAM Quadrature Amplitude Modulation RF Radio Frequency RR Radio Regulations RS Repeater Station (of a P-MP system) RSL Receiver Signal Level Rx Receiver TS Terminal Station (remote out-station with subscriber interface) of a P-MP system Tx Transmitter VSWR Voltage Standing Wave Ratio SIST EN 301 390 V1.2.1:2003

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4 Transmitter spurious emissions at antenna port According to ITU-R Recommendation SM.329-10 [1] and the application to fixed service provided by ITU-R Recommendation F.1191-2 [3], the spurious emissions are defined as emissions at frequencies which are ±250 % of the relevant channel separation outside the nominal carrier frequency (spurious emission domain). According ITU-R Recommendation F.1191-2 [3], the Channel Separation (CS) is taken as XS/2 for alternated frequency channel arrangements and XS for co-channel and interleaved frequency channel arrangements as defined by ITU-R Recommendation F.746-7 [14]. The emission within ±250 % of the relevant channel separation (out-of-band domain) includes only fundamental and unwanted emissions in the out-of-band domain which are outside the scope of the present document. 4.1 Limits Unless more severe requirement were reported into a specific product ETSI deliverable, the spurious emissions delivered at antenna port, of both transmitter and receiver, of Fixed Radio Systems shall be limited within the average power limits reported below. For "noise-like" emissions, the limits are intended not to be exceeded in any elementary measuring bandwidth. The limit values are defined at reference point C' shown in the general RF block diagram of figure 1. Z'A'B'C'D'DCBAZTransmitter RF Tx FilterFeederBranchingNetworkFeederBranchingNetworkRF Rx FilterReceiver Figure 1: RF block diagram 4.1.1 Point-to-point equipment The CEPT/ERC Recommendation 74-01 [4] shall apply. For reader convenience, annex A gives the details for its application to practical systems. 4.1.2 Multipoint equipment with fundamental emission below 21,2 GHz The CEPT/ERC Recommendation 74-01 [4] shall apply. For reader convenience, annex A gives the details for its application to practical systems. 4.1.3 Multipoint equipment with fundamental emission above 21,2 GHz The CEPT/ERC Recommendation 74-01 [4] shall apply as spurious emissions limit in the frequency range 9 kHz to 21,2 GHz and above 43,5 GHz. SIST EN 301 390 V1.2.1:2003

ETSI ETSI EN 301 390 V1.2.1 (2003-11) 10 For spurious emissions, falling in the range 21,2 GHz to 43,5 GHz, the tighter limits shown in figures 2 and 3 shall apply to both Central and Terminal Stations. In this frequency range, where the -40 dBm limit shown in figures 2 and 3 apply, allowance is given for no more than 10 discrete (CW) spurious emissions which are permitted to exceed the limit up to -30 dBm. In the same figures, for comparison, the less stringent limits from CEPT/ERC Recommendation 74-01 [4] are also shown. CEPT/ERC Rec.74-01limits applyChannel centre frequency±250 % CS±70 MHz (CEPT/ERC only)±112 MHzOut-of-band emission limit (TM4 Mask)CS-30 dBm/1 MHz-30 dBm/100 kHz-40 dBm/1 MHz-30 dBm/1 MHz-30 dBm/100 kHz-40 dBm/1 MHz±56 MHz43,5 GHzCEPT/ERC Recommendation 74-01 limitsAdditional requirement of the present document for all stations21,2 GHzCEPT/ERC Rec.74-01limits apply Figure 2: MP equipment for channel separation 1 < CS ≤≤≤≤ 10 MHz Channel centre frequency±250 % CS±112 MHz or 450 % CS (whichever is greater)Out-of-band emission limit (Spectrum Mask)CS-30 dBm/1 MHz-40 dBm/1 MHz-30 dBm/1 MHz-40 dBm/1 MHz43,5 GHzCEPT/ERC Recommendation 74-01 limitsAdditional requirement of the present document for all stations21,2 GHzCEPT/ERC Rec.74-01limits applyCEPT/ERC Rec.74-01limits apply Figure 3: MP equipment for channel separation CS > 10 MHz SIST EN 301 390 V1.2.1:2003

ETSI ETSI EN 301 390 V1.2.1 (2003-11) 11 5 Receiver spurious emissions at the antenna port Receiver spurious emissions are defined in the same frequency range of transmitters spurious emissions, without any exclusion band (such as the 250 % of the relevant channel separation) and are applicable at the reference point C of figure 1. The CEPT/ERC Recommendation 74-01 [4] shall apply. 6 Spurious emissions test method The measurement shall be referenced at the Tx/Rx common antenna port (reference points C-C' of figure 1). According to the equipment physical construction, the test shall be carried on with the methodologies given in EN 301 126-1 [6] and EN 301 126-2-1 [7], EN 301 126-2-2 [8], EN 301 126-2-3 [9], EN 301 126-2-4 [10], EN 301 126-2-5 [11] and EN 301 126-2-6 [12]. The measurement shall be carried out with transmitters set
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