車載用プリント配線基板のグラウンドパターンサイズが平行2配線間のFM帯クロストークにおよぼす影響

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/10/01

タイトル(英語): Effect of Ground Patterns Size on FM-Band Cross-Talks between Two Parallel Signal Traces of Printed Circuit Boards for Vehicles

著者名: 飯田　導平（(株) デンソー），前野　剛（(株) デンソー），藤原　修（名古屋工業大学大学院）

著者名(英語): Michihira Iida (DENSO CORPORATION), Tsuyoshi Maeno (DENSO CORPORATION), Osamu Fujiwara (Graduate School of Engineering, Nagoya Institute of Technology)

キーワード: 車載ラジオ妨害，簡易プリント回路基板，スリット，平行2配線，クロストーク雑音　　electromagnetic disturbances in vehicle-mounted radios，simple printed circuit boards，slits，two parallel signal traces，cross-talk noise

要約(英語): It is well known that electromagnetic disturbances in vehicle-mounted radios are mainly caused by conducted noise currents flowing through wiring-harnesses from vehicle-mounted printed circuit boards (PCBs) with common ground patterns containing slits. To suppress the noise currents outflow from PCBs of these kinds, we previously measured noise currents outflow from simple two-layer PCBs having two parallel signal traces and different ground patterns with/without slits to reveal that making slits with open ends on the ground patterns in parallel with the traces can reduce the conducted noise currents. In the present study, with FDTD simulation, we investigated reduction effects of ground patterns size on the FM-band cross-talk noise levels between two parallel signal traces, by using four types of simple PCB models having different ground patterns formed in different numbers but containing the same planar dimension slits parallel to the traces, in addition to two types of PCB models with different ground patterns divided into two parts parallel to the traces. As a result, we found that the cross-talk noise currents for the above six types of PCBs decrease by 6.9-8.5dB compared to the PCB which has a plain ground with no slits. From this study, we got the finding that the contributing factor for the above mentioned cross-talk reduction relies on the reduction of mutual inductance between the two parallel traces. In addition, in case of this study, it is interesting to note that the noise currents outflow from PCBs can rather be suppressed when the size of the return ground of each signal trace is small.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.10 （2011） 特集：液体中の放電と基礎現象および液体応用技術

本誌掲載ページ: 832-837 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/10/131_10_832/_article/-char/ja/