1、 IEC TR 63018 Edition 1.0 2015-12 TECHNICA L R EPOR T Flex ible printed circuit boards(FPCBs)Method to decrease signal loss by using noise suppression materials IEC T R 63018:2015-12(en)c olourinsideCopyright International Electrotechnical Commission THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright
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11、 printed circuit boards(FPCBs)Method to decrease signal loss by using noise suppression materials INTER NA TIONAL ELECTROTECHNICAL COMMISSION ICS 31.180 ISBN 978-2-8322-3082-4 Registered t rademark of t he Int ernational Electrot echnical Commission W arning!Make sure that you obtained this publicat
12、ion from an authorized distributor.c olourinsideCopyright International Electrotechnical Commission 2 IEC TR 63018:2015 IEC 2015 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Test guideline.6 3.1 Apparatus.6 3.1.1 Network analyzer.6 3.1.2 Block diagram for signal loss measu
13、ring.6 3.2 Test specimen.7 3.2.1 Structure.7 3.2.2 Preparation.8 3.2.3 Test method.8 3.2.4 Calculation.9 3.2.5 Test result.9 3.2.6 Analysis.12 3.3 Improvement method of signal loss for a shield FPCB.13 Annex A(normative)Block diagram of signal loss test system.14 Figure 1 Bare/shield FPCB.5 Figure 2
14、 Increment of signal loss using NSMs.5 Figure 3 Signal loss test system.6 Figure 4 Schematic diagram for two type of test specimen.7 Figure 5 Cross-section of shield FPCB.8 Figure 6 Difference of signal loss between bare and shield FPCBs.9 Figure 7 Signal loss value of the bare and shield FPCB.10 Fi
15、gure 8 Signal loss variation according to the Cu conductive layer thickness.11 Figure 9 Signal loss variation according to the Cu signal line width.11 Figure 10 Two types of structure for FPCB.12 Figure 11 Electric field diagram for two types of shield FPCB.13 Figure A.1 Block diagram of signal loss
16、 test system.14 Figure A.2 Signal loss test system according to the Agilent network analyzer N5230A.14 Table 1 Comparison of cut-off frequency with bare/shild FPCB.10 Copyright International Electrotechnical Commission IEC TR 63018:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FLEXIBLE PRINTED CIRCUIT BOARDS(FPCBs)METHOD TO DECREASE SIGNAL LOSS BY USING NOISE SUPPRESSION MATERIALS FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardi
