1、 IEC 61000-4-3 Edition 4.0 2020-09 INTERNATIONAL STANDARD Electromagnetic compatibility(EMC)Part 4-3:Testing and measurement techniques Radiated,radio-frequency electromagnetic field immunity test IEC 61000-4-3:2020-09(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2020 IEC,Geneva
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9、s and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC 61000-4-3 Edition 4.0 2020-09 INTERNATIONAL STANDARD Electromagnetic compatibility(EMC)Part 4-3:Testing and measurement techniques Radiated,radio
10、-frequency electromagnetic field immunity test INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.100.20 ISBN 978-2-8322-8678-4 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinside 2 IEC 6
11、1000-4-3:2020 IEC 2020 CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 2 Normative references.9 3 Terms,definitions and abbreviated terms.9 3.1 Terms and definitions.9 3.2 Abbreviated terms.13 4 General.14 5 Test levels and frequency ranges.14 5.1 Selection of test level.14 5.2 Test frequency ranges.16
12、 6 Test equipment.17 6.1 Test instrumentation.17 6.2 Description of the test facility.17 6.3 Uniform field area(UFA).18 6.3.1 Characteristics of the UFA.18 6.3.2 Constant field strength level setting method.23 6.3.3 Constant power level setting method.24 7 Test setup.25 7.1 General.25 7.2 Arrangemen
13、t of table-top equipment.26 7.3 Arrangement of floor-standing equipment.28 7.4 Arrangement of wiring.29 7.5 Arrangement of human body-mounted equipment.30 8 Test procedure.30 8.1 General.30 8.2 Laboratory reference conditions.30 8.2.1 General.30 8.2.2 Climatic conditions.30 8.2.3 Electromagnetic con
14、ditions.30 8.3 Execution of the test.30 8.4 Step sizes.32 9 Evaluation of test results.32 10 Test report.32 Annex A (informative)Rationale for the choice of modulation for tests related to the protection against RF emissions from digital radio services.34 A.1 Summary of available modulation methods.
15、34 A.2 Experimental results.35 A.3 Secondary modulation effects.38 A.4 Conclusion.38 Annex B(informative)Field generating antennas.39 B.1 Biconical antenna.39 B.2 Log-periodic antenna.39 B.3 Combination antennas.39 B.4 Horn antenna and double ridge wave guide antenna.39 IEC 61000-4-3:2020 IEC 2020 3
16、 Annex C(informative)Use of anechoic chambers.40 C.1 General anechoic chamber information.40 C.2 Use of ferrite-lined chambers at frequencies above 1 GHz.40 C.2.1 Problems caused by the use of ferrite-lined chambers for radiated field immunity tests at frequencies above 1 GHz.40 C.2.2 Solutions to reduce reflections.41 Annex D(informative)Amplifier compression and non-linearity.42 D.1 Objective of limiting amplifier distortion.42 D.2 Possible problems caused by harmonics and saturation.42 D.3 Li