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Electromagnetic coupling and shielding effectiveness of apertured rectangular cavity under plane wave illumination

Jiao Chong-Qing Qi Lei

Electromagnetic coupling and shielding effectiveness of apertured rectangular cavity under plane wave illumination

Jiao Chong-Qing, Qi Lei
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  • Based on the Bethe's theory for small aperture coupling and the eigen-mode expansion method, an approximate analytic model for the field distribution inside a rectangular cavity with apertures under plane wave illumination is presented. The effects of aperture shape, dimensions, number, position, and the wave incidence and polarization angles on cavity mode excitation can be taken into consideration in this model with clear physical explanation. The calculation results from this model are in better agreement with experimental data than those from the equivalent circuit model. The effects of various factors on the shielding effectiveness of the cavity are analyzed, and the obtained results are useful for guiding the design of electromagnetic shielding enclosures.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51037001), and the Fundamental Research Funds for the Central Universities in China (Grant No.10MG01).
    [1]

    Zhang K Q, Li D J 2001 Electromagnetic Theory for Microwave and Optoelectronics (2nd Ed) (Beijing: Electronic Industry Press) p250 (in Chinese) [张克潜, 李德杰 2001 微波与光电子学中的电磁理论(第二版) (北京: 电子工业出版社) 第250页]

    [2]

    Fang J Y, Huang H J, Zhang Z Q, Huang W H, Jiang W H 2011 Acta Phys. Sin. 60 048404 (in Chinese) [方进勇, 黄惠军, 张治强, 黄文华, 江伟华 2011 物理学报 60 048404]

    [3]

    Wu Y, Jin X, Ma Q S, Li Z H, Ju B Q, Su C, Xu Z, Tang C X 2011 Acta Phys. Sin. 60 084101 (in Chinese) [吴洋, 金晓, 马乔生, 李正红, 鞠炳全, 苏昶, 许州, 唐传祥 2011 物理学报 60 084101]

    [4]

    Sirigiri J R, Kreischer K E, Machuzak J, Mastovsky I, Shapiro M A, Temkin R J 2001 Phys. Rev. Lett. 86 5628

    [5]

    Song K H 2009 Chin. Phys. Lett. 26 120302

    [6]

    Chen J, Wang J G 2007 IEEE Trans. Electromagn. Compat. 49 354

    [7]

    Audone B, Balma M 1989 IEEE Trans. Electromagn. Compat. 31 102

    [8]

    Wallyn W, Zutter D D, Rogier H 2002 IEEE Trans. Electromagn. Compat. 44 130

    [9]

    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

    [10]

    Dehkhoda P, Tavakoli A, Moini R 2008 IEEE Trans. Electromagn. Compat. 50 208

    [11]

    Azaro R, Caorsi S, Donelli M 2001 Microwave and Optical Tech. Lett. 28 289

    [12]

    Bethe H A 1944 Phys. Rev. 66 163

    [13]

    Collin R E 1990 Field Theory of Guided Waves (2nd Ed) (New York: Wiley-IEEE Press) p507

    [14]

    Mendez H A 1978 IEEE Trans. Electromagn. Compat. 20 296

    [15]

    Frederick M T, Michel V I, Torbjorn K 1996 EMC Analysis Methods and Computational Models (New York: Wiley-Interscience Press) p210

  • [1]

    Zhang K Q, Li D J 2001 Electromagnetic Theory for Microwave and Optoelectronics (2nd Ed) (Beijing: Electronic Industry Press) p250 (in Chinese) [张克潜, 李德杰 2001 微波与光电子学中的电磁理论(第二版) (北京: 电子工业出版社) 第250页]

    [2]

    Fang J Y, Huang H J, Zhang Z Q, Huang W H, Jiang W H 2011 Acta Phys. Sin. 60 048404 (in Chinese) [方进勇, 黄惠军, 张治强, 黄文华, 江伟华 2011 物理学报 60 048404]

    [3]

    Wu Y, Jin X, Ma Q S, Li Z H, Ju B Q, Su C, Xu Z, Tang C X 2011 Acta Phys. Sin. 60 084101 (in Chinese) [吴洋, 金晓, 马乔生, 李正红, 鞠炳全, 苏昶, 许州, 唐传祥 2011 物理学报 60 084101]

    [4]

    Sirigiri J R, Kreischer K E, Machuzak J, Mastovsky I, Shapiro M A, Temkin R J 2001 Phys. Rev. Lett. 86 5628

    [5]

    Song K H 2009 Chin. Phys. Lett. 26 120302

    [6]

    Chen J, Wang J G 2007 IEEE Trans. Electromagn. Compat. 49 354

    [7]

    Audone B, Balma M 1989 IEEE Trans. Electromagn. Compat. 31 102

    [8]

    Wallyn W, Zutter D D, Rogier H 2002 IEEE Trans. Electromagn. Compat. 44 130

    [9]

    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

    [10]

    Dehkhoda P, Tavakoli A, Moini R 2008 IEEE Trans. Electromagn. Compat. 50 208

    [11]

    Azaro R, Caorsi S, Donelli M 2001 Microwave and Optical Tech. Lett. 28 289

    [12]

    Bethe H A 1944 Phys. Rev. 66 163

    [13]

    Collin R E 1990 Field Theory of Guided Waves (2nd Ed) (New York: Wiley-IEEE Press) p507

    [14]

    Mendez H A 1978 IEEE Trans. Electromagn. Compat. 20 296

    [15]

    Frederick M T, Michel V I, Torbjorn K 1996 EMC Analysis Methods and Computational Models (New York: Wiley-Interscience Press) p210

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    [2] Jiao Chong-Qing, Li Yue-Yue. Analytical formulation for electromagnetic leakage from an apertured rectangular cavity. Acta Physica Sinica, 2014, 63(21): 214103. doi: 10.7498/aps.63.214103
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    [6] Kan Yong, Yan Li-Ping, Zhao Xiang, Zhou Hai-Jing, Liu Qiang, Huang Ka-Ma. Electromagnetic topology based fast algorithm for shielding effectiveness estimation of multiple enclosures with apertures. Acta Physica Sinica, 2016, 65(3): 030702. doi: 10.7498/aps.65.030702
    [7] Fan Jie-Qing, Hao Jian-Hong, Qi Pei-Hua. Influence of inner windows on near-field shielding effectiveness of rectangular cavity with apertures. Acta Physica Sinica, 2014, 63(1): 014104. doi: 10.7498/aps.63.014104
    [8] Hao Jian-Hong, Gong Yan-Fei, Fan Jie-Qing, Jiang Lu-Hang. An analytical model for shielding effectiveness of double layer rectangular enclosure with inner strip-shaped metallic plate. Acta Physica Sinica, 2016, 65(4): 044101. doi: 10.7498/aps.65.044101
    [9] Zhang Guo-Ping, Zou Ming, Liu Min-Min. Electromagnetic theory of enhanced diffraction for a binary metallic grating. Acta Physica Sinica, 2006, 55(9): 4608-4612. doi: 10.7498/aps.55.4608
    [10] Li Jing-de, Li Zhi- qiang, Lu Xia-lian, Shen Han. The Shielding Theory of Ferroelectricity. Acta Physica Sinica, 2000, 49(1): 160-163. doi: 10.7498/aps.49.160
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Publishing process
  • Received Date:  22 August 2011
  • Accepted Date:  07 December 2011
  • Published Online:  05 July 2012

Electromagnetic coupling and shielding effectiveness of apertured rectangular cavity under plane wave illumination

  • 1. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;
  • 2. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 51037001), and the Fundamental Research Funds for the Central Universities in China (Grant No.10MG01).

Abstract: Based on the Bethe's theory for small aperture coupling and the eigen-mode expansion method, an approximate analytic model for the field distribution inside a rectangular cavity with apertures under plane wave illumination is presented. The effects of aperture shape, dimensions, number, position, and the wave incidence and polarization angles on cavity mode excitation can be taken into consideration in this model with clear physical explanation. The calculation results from this model are in better agreement with experimental data than those from the equivalent circuit model. The effects of various factors on the shielding effectiveness of the cavity are analyzed, and the obtained results are useful for guiding the design of electromagnetic shielding enclosures.

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