| 多层平板屏效计算中的等效传输线法 |
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| 引用本文： | 马双武,高攸纲.多层平板屏效计算中的等效传输线法[J].电波科学学报,1999,14(4):384-389. |
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| 作者姓名： | 马双武 高攸纲 |
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| 作者单位： | 北京邮电大学171信箱!北京100876 |
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| 基金项目： | 国家自然科学基金资助项目!（69671026） |
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| 摘 要： | 讨论了多层平板屏效计算中的等效传输线法。定义了不同传输线间的反射系数与透射系数，求出了反射系数和透射系数表达式。文中透射系数的定义是对传线基本理论的有益补充。
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| 关 键 词： | 电磁屏蔽 屏蔽效能 等效传输线法 传输线 |
The equivalent transmission line method for calculating multi layer plane shielding effectiveness |
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| MA Shuang wu,GAO You gang.The equivalent transmission line method for calculating multi layer plane shielding effectiveness[J].Chinese Journal of Radio Science,1999,14(4):384-389. |
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| Authors: | MA Shuang wu GAO You gang |
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| Abstract: | In electromagnetic compatibility field, calculating the shielding effectiveness of shield body is a important subject. In order to calculate shielding effectiveness, the field distribution in shielding region should be determined. In general, it is very complicated to calculate field distribution utilizing field method. This paper presented the equivalent transmission line method for calculating the shielding effectiveness. The transmission coefficient between transmission lines with different characteristic impedance and propagation constant were defined. With this definition, this paper easily gave the field distribution in any shield body and solved the shielding effectiveness of multi layer plane shield for normally incident plane wave. Compared with previous theory, this paper gave simpler and clearer formulae. |
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| Keywords: | Electromagnetic shielding Shielding effectiveness Equivalent transmission line method |
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