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| An Efficient Method for the Shielding Effectiveness of Metallic Enclosure with Electrically Large Aperture Based on Scalar Wave Function and Cohn Model |
| Gong Yanfei, Hao Jianhong, Jiang Luhang |
| School of Electrical and Electronic Engineering North China Electric Power University Beijing 102206 China |
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Abstract A complex cavity generally has an electrically large aperture based on which a fast and accurate algorithm has been developed for the shielding effectiveness from a metallic rectangular enclosure excited by plane wave out of the shielding enclosure. The electromagnetic fields from the plane wave into the enclosure through the electrically large aperture are calculated based on the Cohn model and the scalar wave function, so the shielding effectiveness of the target point is calculated. At the same time the algorithm then is employed to analyze the effect of the positions of target point on the shielding effectiveness when the position the aperture is unvaried. Comparison with the full wave simulation software CST (Computer Simulation Technology) has verified the model over a wide frequency band, which can provide the reference for the shielding effectiveness of metallic enclosure with an electrically large aperture.
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Received: 25 August 2017
Published: 14 September 2018
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2018, Vol. 33 
