确定多层平板屏蔽体屏蔽效能的简便方法

doi:10.13190/jbupt.200802.54.098

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (2): 54-58.doi: 10.13190/jbupt.200802.54.098

确定多层平板屏蔽体屏蔽效能的简便方法

石丹，沈远茂，高攸纲

北京邮电大学电信工程学院, 北京 100876

收稿日期:2007-05-08 修回日期:1900-01-01 出版日期:2008-04-28 发布日期:2008-04-28
通讯作者: 石丹

An Efficient Method for Analysis of Multilayer Plate Shielding Effectiveness

SHI Dan, SHEN Yuan-mao, GAO You-gang

School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2007-05-08 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
Contact: SHI Dan

摘要/Abstract

摘要：

利用非均匀传输线模拟了多层平板屏蔽体，并进一步采用矩阵原理得到了屏蔽体的屏蔽效能。由于非均匀传输线本身的非均匀性，用它模拟多层屏蔽体不需再分析板间的多次来回反射，大大简化了计算过程；矩阵表达有利于计算机运算。最后给出了可用于计算任意层平板屏蔽体屏蔽效能的一般公式，用其计算了双层板和4层板2种特例的屏蔽效能，与已有的精确公式计算结果完全吻合，而过程较之简单。

关键词: 非均匀传输线, 屏蔽效能, 网络参量, 矩阵原理

Abstract:

A nonuniform transmission line is modeled for multilayer plates and an effective shielding is obtained by matrix theory. Owing to discontinuity of nonuniform transmission line, it is suited for modeling multilayer plates regardless of re-reflection between plates. Matrix presentation can benefit calculation using programming. A general formula applicable to analyze arbitrary multiplayer plates shielding is proposed. Special cases of double and fourfold shield are investigated. The accuracy of this method has been validated by comparison to other analytical methods.

Key words: nonuniform transmission line, shielding effectiveness, network parameter, matrix theory

中图分类号:

TN911.22

石丹，沈远茂，高攸纲. 确定多层平板屏蔽体屏蔽效能的简便方法[J]. 北京邮电大学学报, 2008, 31(2): 54-58.

SHI Dan, SHEN Yuan-mao, GAO You-gang. An Efficient Method for Analysis of Multilayer Plate Shielding Effectiveness[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(2): 54-58.

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确定多层平板屏蔽体屏蔽效能的简便方法

An Efficient Method for Analysis of Multilayer Plate Shielding Effectiveness

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