1、 IEC 62037-1 Edition 1.0 2012-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Passive RF and microwave devices, intermodulation level measurement Part 1: General requirements and measuring methods Dispositifs RF et micro-ondes passifs, mesure du niveau dintermodulation Partie 1: Exigences gnrales et
2、mthodes de mesure IEC 62037-1:2012-05(EN-FR) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,
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19、6 et CISPR de lIEC. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62037-1 Edition 1.0 2012-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Passive RF and microwave devices, intermodu
20、lation level measurement Part 1: General requirements and measuring methods Dispositifs RF et micro-ondes passifs, mesure du niveau dintermodulation Partie 1: Exigences gnrales et mthodes de mesure INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE Q ICS 33.040.20 P
21、RICE CODE CODE PRIX ISBN 978-2-8322-1350-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vo
22、us avez obtenu cette publication via un distributeur agr. colour inside 2 62037-1 IEC:2012 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references 5 3 Abbreviations 5 4 Characteristics of intermodulation products . 5 5 Principle of test procedure 6 6 Test set-up . 6 6.1 General . 6 6.2 Test equipme
23、nt 6 6.2.1 General . 6 6.2.2 Set-up 1 . 7 6.2.3 Set-up 2 . 8 7 Preparation of DUT and test equipment . 8 7.1 General . 8 7.2 Guidelines for minimizing generation of passive intermodulation. 8 8 Test procedure . 10 9 Reporting 10 9.1 Results 10 9.2 Example of results . 10 10 Measurement error . 11 An
24、nex A (informative) Configuration of low-PIM termination 15 Annex B (informative) Test procedure considerations . 17 Figure 1 Set-up 1; reverse IM-test set-up 12 Figure 2 Set-up 2; forward IM-test set-up 13 Figure 3 Passive intermodulation (PIM) measurement error caused by residual system error . 14
25、 Figure A.1 Long cable termination 15 Figure A.2 Lumped termination with a linear attenuator . 16 Table 1 Guide for the design, selection of materials and handling of components that may be susceptive to PIM generation 9 Table 2 Test set-up conditions 10 62037-1 IEC:2012 3 INTERNATIONAL ELECTROTECHN
26、ICAL COMMISSION _ PASSIVE RF AND MICROWAVE DEVICES, INTERMODULATION LEVEL MEASUREMENT Part 1: General requirements and measuring methods FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees
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36、Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such paten
37、t rights. International Standard IEC 62037-1 has been prepared by technical committee 46: Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and accessories. This bilingual version (2014-01) corresponds to the monolingual English version, published in 2012-05. This fir
38、st edition of IEC 62037-1 replaces IEC 62037, published in 1999. It constitutes a technical revision. The text of this standard is based on the following documents: FDIS Report on voting 46/402/FDIS 46/416/RVD 4 62037-1 IEC:2012 Full information on the voting for the approval of this standard can be
39、 found in the report on voting indicated in the above table. The French version of this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts in the IEC 62037 series, published under the general title Passive RF
40、 and microwave devices intermodulation level measurement, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific pu
41、blication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its content
42、s. Users should therefore print this document using a colour printer. 62037-1 IEC:2012 5 PASSIVE RF AND MICROWAVE DEVICES, INTERMODULATION LEVEL MEASUREMENT Part 1: General requirements and measuring methods 1 Scope This part of IEC 62037 deals with the general requirements and measuring methods for
43、 intermodulation (IM) level measurement of passive RF and microwave components, which can be caused by the presence of two or more transmitting signals. The test procedures given in this standard give the general requirements and measurement methods required to characterize the level of unwanted IM
44、signals using two transmitting signals. The standards in this series address the measurement of PIM, but do not cover the long term reliability of a product with reference to its performance. This standard is to be used in conjunction with other appropriate part(s) of IEC 62037. 2 Normative referenc
45、es None. 3 Abbreviations CATV Community antenna television DUT Device under test IM Intermodulation PIM Passive intermodulation 4 Characteristics of intermodulation products PIM interference is caused by sources of non-linearity of mostly unknown nature, location and behaviour. A few examples are in
46、ter-metallic contacts, choice of materials, corrosion products, dirt, etc. Most of these effects are subject to changes over time due to mechanical stress, temperature changes, variations in material characteristics (cold flow, etc.) and climatic changes, etc. The generation of intermodulation produ
47、cts originates from point-sources inside a DUT and propagate equally in all available directions. The generation of passive intermodulation products (PIM) does not necessarily follow the law of the usual non-linear equation of quadratic form. Therefore, accurate calculation to other power levels cau
48、sing the intermodulation is not possible and PIM comparisons should be made at the same power level. Furthermore, PIM generation can be frequency-dependent. When PIM generation is frequency- dependant, the PIM performance shall be investigated over the specified frequency band. 6 62037-1 IEC:2012 5
49、Principle of test procedure Test signals of frequencies f 1 and f 2 with equal specified test port power levels are combined and fed to the DUT. The test signals should contain at least 10 dB less harmonic or self- intermodulation signal level than the expected level generated in the DUT. The PIM is measured over the specified frequency range. The intermodulation products of order (2f 1 f 2 ), (2f 2 f 1 ) etc.
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