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IEC 61000-4-41:2024

(Main)

Electromagnetic compatibility (EMC) - Part 4-41: Testing and measurement techniques - Broadband radiated immunity tests

Electromagnetic compatibility (EMC) - Part 4-41: Testing and measurement techniques - Broadband radiated immunity tests

IEC 61000-4-41:2024 relates to broadband radiated disturbances generated by, for example, communication devices or services, transmitters or industrial electromagnetic sources or any other devices capable of generating such a signal.
The object of this document is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to broadband radiated electromagnetic fields.
This document specifies testing in the frequency ranges above 80 MHz, limited only by the capabilities of commercially available test instrumentation.
It forms Part 4-41 of IEC 61000. It has the status of a basic EMC publication in accordance with IEC Guide 107.

Compatibilité électromagnétique (CEM) - Partie 4-41: Techniques d'essai et de mesure - Essais d'immunité aux rayonnements à large bande

IEC 61000-4-41:2024 concerne les perturbations rayonnées à large bande générées, par exemple, par des dispositifs ou des services de communication, des émetteurs ou des sources électromagnétiques industrielles, ou tout autre dispositif capable de générer un tel signal.
Le présent document a pour objet d'établir une référence commune d'évaluation des performances en matière d'immunité des matériels électriques et électroniques soumis à des champs électromagnétiques rayonnés à large bande.
Le présent document spécifie les essais dans les plages de fréquences au-dessus de 80 MHz, limitées uniquement par les capacités des instruments d'essai disponibles dans le commerce.
Elle constitue la Partie 4-41 de l'IEC 61000. Elle a le statut d'une publication fondamentale en CEM conformément au Guide 107 de l'IEC.

General Information

Status
Published
Publication Date
21-Nov-2024
ICS
33.100.20 - Immunity
Technical Committee
SC 77B - High frequency phenomena
Drafting Committee
WG 10 - TC 77/SC 77B/WG 10
Current Stage
PPUB - Publication issued
Start Date
13-Dec-2024
Completion Date
22-Nov-2024
Ref Project

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IEC 61000-4-41:2024 - Electromagnetic compatibility (EMC) - Part 4-41: Testing and measurement techniques - Broadband radiated immunity tests Released:22. 11. 2024 Isbn:9782832700198IEC 61000-4-41:2024 - Electromagnetic compatibility (EMC) - Part 4-41: Testing and measurement techniques - Broadband radiated immunity tests Released:22. 11. 2024 Isbn:9782832700198
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IEC 61000-4-41:2024 - Electromagnetic compatibility (EMC) - Part 4-41: Testing and measurement techniques - Broadband radiated immunity tests Released:22. 11. 2024 Isbn:9782832700198
English and French language
103 pages
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IEC 61000-4-41 ®
Edition 1.0 2024-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-41: Testing and measurement techniques – Broadband radiated immunity
tests
Compatibilité électromagnétique (CEM) –
Partie 4-41: Techniques d'essai et de mesure – Essais d'immunité aux
rayonnements à large bande
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 61000-4-41 ®
Edition 1.0 2024-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electromagnetic compatibility (EMC) –

Part 4-41: Testing and measurement techniques – Broadband radiated immunity

tests
Compatibilité électromagnétique (CEM) –

Partie 4-41: Techniques d'essai et de mesure – Essais d'immunité aux

rayonnements à large bande
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20  ISBN 978-2-8327-0019-8

– 2 – IEC 61000-4-41:2024 © IEC 2024
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 10
4 General . 11
5 Test levels and test signal . 11
5.1 Test levels . 11
5.2 Test signal . 12
5.3 Frequency range and test signal bandwidth . 14
5.4 Spectrum mask . 15
5.5 Frequency stepping . 16
5.6 Selection of level . 17
6 Test equipment and level adjustment procedure . 17
6.1 Test instrumentation . 17
6.2 Description of the test facility . 18
6.3 UFA and validation of the spectrum shape . 18
6.3.1 General . 18
6.3.2 Saturation check and spectrum validation . 18
7 Test setup . 20
8 Test procedure . 20
8.1 Step size and test signal bandwidth . 20
8.2 Test signal and level setting . 20
9 Evaluation of the test results . 20
10 Test report . 21
Annex A (informative) Information on test signal generation . 22
A.1 General . 22
A.2 True noise generation . 22
A.3 Pseudo-random noise sequence . 23
Annex B (informative) Field generating antennas . 26
Annex C (informative) 4G and 5G signals . 27
C.1 Overview of the radio interface technology of 4G and 5G . 27
C.1.1 General . 27
C.1.2 Overview of the component RIT: E-UTRA/LTE . 27
C.1.3 Overview of the component RIT: NR . 30
C.2 Simulation of the 5G signal . 30
C.3 Application of a test model signal . 33
Annex D (informative) Guidelines for selecting test levels . 35
D.1 General . 35
D.2 Test levels related to general purposes . 36
D.3 Test levels related to the protection against RF emissions from 4G/5G
communications . 36
D.4 Guidelines to derive a test level from a field distribution . 39

Annex E (informative) Measurement uncertainty due to test instrumentation . 42
Annex F (informative) Test signal characterization . 43
F.1 General . 43
F.2 Test signal generation . 43
F.3 Definition of the crest factor . 43
F.4 Crest factor determination . 44
F.4.1 Mathematical determination for arbitrary waveform generator use . 44
F.4.2 Complementary cumulative distribution function (CCDF) . 44
F.5 Amplifier saturation . 45
F.6 Measurement methods . 46
F.6.1 General . 46
F.6.2 Spectrum analyser method . 46
F.6.3 Time domain measurement with a fast oscilloscope . 47
F.6.4 Power meter method . 48
F.7 Comparison of crest factor measurement results . 49
Bibliography . 50

Figure 1 – Example of the envelope of a 100 MHz wide test signal in frequency domain . 13
Figure 2 – Example of the envelope of a 100 MHz wide test signal in time domain . 13
Figure 3 – Pulse modulated test signal, with a period of 10 ms, and 50 % duty cycle . 14
Figure 4 – Spectrum mask of the broadband test signal at the output of the power

amplifier . 16
Figure A.1 – Principle of true noise generation . 22
Figure A.2 – Example of a 100 MHz wide band-limited true noise signal at a centre
frequency of 1 GHz . 22
Figure A.3 – Principle of band-limited broadband signal generation with an arbitrary
waveform generator . 23
Figure A.4 – Example signal spectrum of a band-limited pseudo random noise signal
(measured with 120 kHz bandwidth) .
...

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