著者

大内 二郎 伊藤 健一

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.118, no.7-8, pp.1082-1088, 1998-07-01 (Released:2009-10-02)

参考文献数

8

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The ground area of print pattern is important for the reduction of EMI. But until now the ground area of the print pattern was not quantitativery examined. In this report we present three parameters relating to ground/power-source patterns which are important for the EMI reduction. One of them is a “BETA” ratio which is defined as the ground pattern ratio to the print board size. Our experiment shows that these ratios are greatly affect to the radiation noise.So we developed the CAD, which is useful for print pattern design, to caluculate these parameters.