内部窗口结构对开孔矩形腔体近场屏蔽效能的影响

范杰清; 郝建红; 柒培华

doi:10.7498/aps.63.014104

摘要

针对开孔屏蔽腔体内置窗口的结构特点，采用扩展的传输线方法理论，建立了电偶极子天线照射下计算近场屏蔽效能的等效电路模型，推导了近似计算解析式，并计算分析了内部窗口结构对开孔腔体近场屏蔽效能的影响. 结果表明：含内置窗口结构腔体的近场电场屏蔽效能小于远场屏蔽效能，腔体屏蔽效能随窗口宽度的减小而增大，电感窗口使得腔体谐振频率向上偏移，电容窗口使其谐振频率向下偏移. 分析结果与CST仿真结果进行了对比，证实本文采用的等效电路方法是有效的.

关键词:

Abstract

Influence of the inner windows on the shielding effectiveness of a cavity with apertures is investigated by using the adjusted transmission line method (TLM). Electric shielding effectiveness is calculated as a function of the opening width of metal windows. It is shown that the electric near-field shielding effectiveness of a cavity with inner windows and apertures is far inferior to that of far-field. Results also show that the near-filed shielding effectiveness increases with the decrease of the opening width of the inner window, and the capacitive windows may lower the resonance frequency while the inductive windows may enhance. Results of the adjusted TLM are in good agreement with the CST simulation results.

Keywords:

作者及机构信息

1.
华北电力大学, 电气与电子工程学院, 北京 102206

基金项目: 国家自然科学基金（批准号：61372050，61250008）资助的课题.

Authors and contacts

1.
School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 61372050, 61250008).

参考文献

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[10]	Wang J G, Liu G Z, Zhou J S 2003High Power Laser and Particle Beams 15 1093 (in Chinese) [王建国, 刘国治, 周金山 2003 强激光与粒子束 15 1093]
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[13]	Moser J R 1988 IEEE Trans. Electromagn. Compat. 30 202
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[15]	Chiu H K, Lin M S, Chen C H 1997 IEEE Trans. Electromagn. Compat. 39 332
[16]	Ali S, Weile D, Clupper T 2005 IEEE Trans. Electromagn. Compat. 47 367
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[19]	Audone B, Balma M 1989 IEEE Trans. Electromagn. Compat. 31 102
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施引文献

[1]	Chen J, Wang J G 2007 IEEE Trans. Electromagn. Compat. 49 354
[2]	Audone B, Balma M 1989 IEEE Trans. Electromagn. Compat. 31 102
[3]	WallynW, Zutter D D, Rogier H 2002IEEE Trans. Electromagn. Compat. 44 130
[4]	Robinson M P, Benson T M, Christopoulos C, Dawson J F, Ganley M D, Marvin A C, Porter S J, Thomas D W P 1998 IEEE Trans. Electromagn. Compat. 40 240
[5]	Dehkhoda P, Tavakoli A, Moini R 2008 IEEE Trans. Electromagn. Compat. 50 208
[6]	Jongjoo S, Dong G K, Jong H K, Joungho K 2010 IEEE Trans. Electromagn. Compat. 52 566
[7]	Belokour I, LoVetri J, Kashyap S 2001 IEEE Trans. Electromagn. Compat. 2 702
[8]	Dehkhoda P, Tavakoli A, Moini R 2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Sciences Meeting Banff, Canada, February 15–18, 2009, p1
[9]	Hao J H, Qi P H, Fan J Q, Guo Y Q 2013 PIER M 32 73
[10]	Wang J G, Liu G Z, Zhou J S 2003High Power Laser and Particle Beams 15 1093 (in Chinese) [王建国, 刘国治, 周金山 2003 强激光与粒子束 15 1093]
[11]	Lu X C, Wang J G, Liu Y, Li S, Han F 2013Acta Phys. Sin. 62 070504 (in Chinese) [陆希成, 王建国, 刘钰, 李爽, 韩峰 2013 62 070504]
[12]	Jiao C Q, Qi L 2012Acta Phys. Sin. 61 134104 (in Chinese) [焦重庆, 齐磊 2012 61 134104]
[13]	Moser J R 1988 IEEE Trans. Electromagn. Compat. 30 202
[14]	Bannister P R 1968 IEEE Trans. Electromagn. Compat. 10 2
[15]	Chiu H K, Lin M S, Chen C H 1997 IEEE Trans. Electromagn. Compat. 39 332
[16]	Ali S, Weile D, Clupper T 2005 IEEE Trans. Electromagn. Compat. 47 367
[17]	Criel S, Martens L, Zutter D D 1994 IEEE Trans. Electromagn. Compat. 36 161
[18]	Wilson P 1995 IEEE Trans. Electromagn. Compat. 37 126
[19]	Audone B, Balma M 1989 IEEE Trans. Electromagn. Compat. 31 102
[20]	Jiao C Q, Niu S 2013Acta Phys. Sin. 62 114102 (in Chinese) [焦重庆, 牛帅2013 62 114102]
[21]	Paul C R 2006 Introduction to Electromagnetic Compatibility (2nd Edn) New Jersey: John Wiley & Sons, Inc.
[22]	Ren L 1980 Antenna Theory Foundations (Beijing: Posts & Telecom Press) (in Chinese) [任朗1980 天线理论基础(北京: 人民邮电出版社)]
[23]	Marcuvitz N 1986 Waveguide Handbook(Vol.10) (UK: IET) p219

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