Journal of the Magnetics Society of Japan
Online ISSN : 1882-2932
Print ISSN : 1882-2924
計測・高周波デバイス
信号線路に無電解Ni-P合金めっき膜を被覆した低クロストーク高密度プリント回路基板の作製と特性評価
曽根原 誠加山 慎二佐藤 敏郎山沢 清人三浦 義正
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ジャーナル オープンアクセス

35 巻 (2011) 2 号 p. 82-87

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  High-density printed circuit boards (PCBs) with less than 50 μm/50 μm line/space has been developed. Since the spacing between adjacent signal lines becomes very narrow in the PCBs, the crosstalk from electromagnetic interference in adjacent lines becomes serious. The authors have proposed a magnetic method of reducing the crosstalk. PCBs with electroless-plated Ni-P alloy film on the signal lines were fabricated. From an experiment using a PCB-TEG with a 130 μm/50 μm line/space and 25-mm line length, crosstalk was suppressed throughout a wide frequency range. In using 6-μm thick Ni98P2.0 (wt.%) alloy film, the suppressed crosstalk was up to 12 dB around 1 GHz. However, the influence of transmission and reflection in the main signal line was very small.

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© 2011 (社)日本磁気学会
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