A study on transmission characteristics and shielding effectiveness of shielded-flexible printed circuits for differential-signaling

Yoshiki Kayano, Hiroshi Inoue

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    To provide basic considerations for the realization of method for suppressing the EMI from differential-paired lines on flexible printed circuits (FPC), the characteristics of the SI performance and shielding effectiveness (SE) of shielded-flexible printed circuits for differential-signaling are investigated in this paper experimentally and by a numerical modeling. Firstly, transmission characteristics of TDR measurement and frequency response of Sdd21 are discussed, from view point of signal integrity. Secondly, as the characteristics of the SE performance for EMI, frequency responses of magnetic field are investigated. Although placement of conductive shield near the paired-lines decreases characteristics impedance, Sdd21 for the 'with Cu 5.5um-thickness copper shield' is not deteriorated compared with 'without shield' and sufficient SE performance for magnetic fields can be established. But, thin-shield deteriorates SI as well as SE performances.

    Original languageEnglish
    Title of host publication2015 IEEE International Symposium on Electromagnetic Compatibility, EMC 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages80-85
    Number of pages6
    ISBN (Electronic)9781479966158
    DOIs
    Publication statusPublished - 2015 Sep 10
    EventIEEE International Symposium on Electromagnetic Compatibility, EMC 2015 - Dresden, Germany
    Duration: 2015 Aug 162015 Aug 22

    Publication series

    NameIEEE International Symposium on Electromagnetic Compatibility
    Volume2015-Septmber
    ISSN (Print)1077-4076
    ISSN (Electronic)2158-1118

    Other

    OtherIEEE International Symposium on Electromagnetic Compatibility, EMC 2015
    CountryGermany
    CityDresden
    Period15/8/1615/8/22

    Keywords

    • Differential-signaling
    • common-mode
    • differential-mode
    • electromagnetic shield
    • flexible printed circuits

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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