Radiated emission from a PCB with an attached cable resulting from a nonzero ground plane impedance

Yoshiki Kayano, Motoshi Tanaka, Hiroshi Inoue

    研究成果: Conference contribution

    5 被引用数 (Scopus)

    抄録

    In this paper, radiated emission from a PCB with an attached cable resulting from a nonzero ground plane impedance is studied experimentally and with FDTD modeling. Frequency responses of the CM current, the electric field near the PCB, and the electric far field are investigated. First, the effect of a thin wire to mimic an interconnected ground wire is discussed. Comparing the cases with and without the thin wire, the difference is only at the resonance frequency, and there is no change on the magnitude of the CM current. Second, the effect of a termination on EMI coupling-path that results from the nonzero ground plane impedance is discussed. When the terminating resistor is smaller than the nonzero impedance, EMI antenna is driven as currentdriven. Therefore, for relatively low impedance load such as 51 Ω, EMI antenna is driven as voltage-driven at lower frequency. As the terminating resistor is larger, the CM current becomes larger at lower frequencies (10∼100 MHz). This indicates that a high impedance load such as a logic IC results in larger radiation at lower frequency.

    本文言語English
    ホスト出版物のタイトル2005 International Symposium on Electromagnetic Compatibility, EMC 2005
    ページ955-960
    ページ数6
    DOI
    出版ステータスPublished - 2005 12 1
    イベント2005 International Symposium on Electromagnetic Compatibility, EMC 2005 - Chicago, IL, United States
    継続期間: 2005 8 82005 8 12

    出版物シリーズ

    名前IEEE International Symposium on Electromagnetic Compatibility
    3
    ISSN(印刷版)1077-4076

    Conference

    Conference2005 International Symposium on Electromagnetic Compatibility, EMC 2005
    国/地域United States
    CityChicago, IL
    Period05/8/805/8/12

    ASJC Scopus subject areas

    • 凝縮系物理学
    • 電子工学および電気工学

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