Transactions of China Electrotechnical Society  2018, Vol. 33 Issue (9): 2139-2147    DOI: 10.19595/j.cnki.1000-6753.tces.170311
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An Analytical Model for Electromagnetic Leakage from Double Cascaded Enclosures Based on Bethe’s Small Aperture Coupling Theory and Mirror Procedure
Gong Yanfei, Hao Jianhong, Jiang Luhang, Fan Jieqing
School of Electrical and Electronic Engineering North China Electric Power University Beijing 102206 China

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Abstract  An efficient and accurate analytical model has been developed for the electromagnetic leakage from two multiple apertured cascaded metallic rectangular enclosures connected by a metallic plate excited by an electric dipole located in the enclosure. The slot coupling of electromagnetic interference are represented by the equivalent electric and magnetic dipoles through the Bethe’s small aperture coupling theory, so the leakage fields through the multiple apertures are obtained by using the mirror procedure. Comparison with the full wave simulation software CST has verified the model over a wide frequency band. The model then is employed to analyze the influences of the excitation source location, aperture location, and the apertures in different shapes on the shielding effectiveness in the high frequency domain. This analytical model is helpful for evaluating the electromagnetic leakage from complex shielding enclosures.
Key wordsDouble cascaded metallic enclosures      electromagnetic leakage      Bethe's small aperture coupling theory      mirror procedure      shielding effectiveness     
Received: 22 March 2017      Published: 08 May 2018
PACS: TM15  
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Gong Yanfei
Hao Jianhong
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Fan Jieqing
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Gong Yanfei,Hao Jianhong,Jiang Luhang等. An Analytical Model for Electromagnetic Leakage from Double Cascaded Enclosures Based on Bethe’s Small Aperture Coupling Theory and Mirror Procedure[J]. Transactions of China Electrotechnical Society, 2018, 33(9): 2139-2147.
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