过孔激起反谐振对信号传输的影响

doi:10.3969/j.issn.1001-2400.2013.05.022

J4 ›› 2013, Vol. 40 ›› Issue (5): 135-140.doi: 10.3969/j.issn.1001-2400.2013.05.022

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Analysis of the effect of the anti-resonance inspired by via on PCB on signal transmission

CHU Xiuqin;LU Shan;QIN Jun;LIN Yongjia

(Research Inst. of Electronic CAD, Xidian Univ., Xi'an 710071， China)

Received:2012-07-23 Online:2013-10-20 Published:2013-11-27
Contact: CHU Xiuqin E-mail:xqchu@mail.xidian.edu.cn

Abstract

Abstract:

The anti-resonant effect of the plane inspired by the via has a serious impact on the transmission effect. To overcome this shortcoming, a novel method, based on the combination of the via and plane resonance, is proposed. The two ports have the same anti-resonant frequency, which don't be discussed in suppressing modal impedances. By introducing the impedance parameter Z of the linear network, the new method can accurately predict whether the transmission effect of two vias which have the same anti resonant frequency is better than that of a single via. Different kinds of vias are tested and discussed. Our extensive experiments lead to two useful finding. First, the through via should be employed when the plane's anti-resonant effects are taken into account. Second, when the signal's path alters twice due to vias, the return path just changes at the via nearest to the plane's edge.

Key words: the position of vias, different types of vias, anti-resonant modal, Z parameter, insertion loss

CHU Xiuqin;LU Shan;QIN Jun;LIN Yongjia. Analysis of the effect of the anti-resonance inspired by via on PCB on signal transmission[J].J4, 2013, 40(5): 135-140.

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Analysis of the effect of the anti-resonance inspired by via on PCB on signal transmission

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