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A BLT equation-based approach for calculating the shielding effectiveness of enclosures with apertures

Luo Jing-Wen Du Ping-An Ren Dan Nie Bao-Lin

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A BLT equation-based approach for calculating the shielding effectiveness of enclosures with apertures

Luo Jing-Wen, Du Ping-An, Ren Dan, Nie Bao-Lin
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  • A calculation method based on BLT equation is proposed for analyzing the shielding effectiveness of enclosures containing apertures. This method can accurately and quickly obtain the shielding effectiveness of oblique incidence and polarization, off-centered apertures, and multi-apertures in two walls of enclosures. Aperture scattering matrix can be obtained according to equivalent circuit theory. Then, propagation relationships and reflection relationships are established, and finally the general BLT equation is derived, including the coupling to apertures. In order to verify the validity, the results are compared with these from equivalent circuit theory and CST. With the same aperture impedance, the aperture scattering matrix contains the interaction of the electromagnetic field so that the method proposed in this paper owns higher precision and can predict more resonant modes compared with the equivalent circuit theory. This method takes less time and computer resource compared with CST which cannot easily get the influence of enclosure parameters.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51175068).
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    Yenikaya S 2011 Iranian Journal of Electrical and Computer Engineering. 10 70

    [2]

    Chen J, Wang J G 2007 IEEE Transactions on Electromagnetic Compatibility 49 354

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    Zhou G Q 2011 Chin. Phys. B 20 074203

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    Wang J G, Liu G Z, Zhou J S 2003 High Power Laser and Particle Beams 15 1093 [王建国, 刘国治, 周金山. 2003 强激光与粒子束 15 1093]

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    Kang W J, Lee V O, Mun S K, Chung Y S, Cheon C Y 2010 IEEE Antennas and Propagation Society International Symposium. July 11-17 2010 p1-4

    [13]

    Tesche F M 2007 IEEE Trans on Electromagn Compat. 49 427

    [14]

    Baum C E 2005 Electromagnetics 25 623

    [15]

    Xie H Y, Wang J G, Fan R Y, Liu Y N 2011 IEEE Trans on Electromagnetic Compatibility 53 185

    [16]

    Zhang Y P, Da X Y, Xie T C 2014 High Power Laser and Particle Beams 02 234 [张亚普, 达新宇, 谢铁城 2014 强激光与粒子束 02 234]

    [17]

    Tesche F M, Butler C M 2003 Interaction Notes 588

    [18]

    Azaro R, Caorsi S, Donelli, M, Gragnani, G L 2002 Microwave Theory and Techniques, IEEE Transactions 50 2259

    [19]

    Shi D, Shen Y M, Ruan F M, Wei Z G, Gao Y G 2008 IEEE International Symposium on. Aug. 18-22 2008 p1-5

    [20]

    Mao X Y, Du P A 2010 Science China Technological Sciences 07 1993

    [21]

    Dehkhoda P, Tavakoli A, Moini R 2008 IEEE Transactions 50 208

  • [1]

    Yenikaya S 2011 Iranian Journal of Electrical and Computer Engineering. 10 70

    [2]

    Chen J, Wang J G 2007 IEEE Transactions on Electromagnetic Compatibility 49 354

    [3]

    Zhou G Q 2011 Chin. Phys. B 20 074203

    [4]

    Martin T, Backstrom M, Loren J 2003 IEEE Transactions on Electromagnetic Compatibility 45 229

    [5]

    Niu S, Jiao C Q, Li L 2013 Acta Phys. Sin. 62 214102 (in Chinese) [牛帅, 焦重庆, 李琳 2013 物理学报 62 214102]

    [6]

    Shim J, Kam D G, Kwon J H, Kim J 2010 IEEE Transactions on Electromagnetic Compatibility 52 566

    [7]

    Jiao C Q, Qi L 2012 Acta Phys. Sin. 61 114102 (in Chinese) [焦重庆, 齐磊 2012 物理学报 61 114102]

    [8]

    Bethe H A 1944 Phys. Rev. 66 163

    [9]

    Jiao C Q, Niu S 2013 Acta Phys. Sin 62 134104 (in Chinese) [焦重庆, 牛帅 2013 物理学报 62 134104]

    [10]

    Robinson M P, Benson T M, Christopoulos C 1998 IEEE Trans on Electromagne Compat. 40 240

    [11]

    Wang J G, Liu G Z, Zhou J S 2003 High Power Laser and Particle Beams 15 1093 [王建国, 刘国治, 周金山. 2003 强激光与粒子束 15 1093]

    [12]

    Kang W J, Lee V O, Mun S K, Chung Y S, Cheon C Y 2010 IEEE Antennas and Propagation Society International Symposium. July 11-17 2010 p1-4

    [13]

    Tesche F M 2007 IEEE Trans on Electromagn Compat. 49 427

    [14]

    Baum C E 2005 Electromagnetics 25 623

    [15]

    Xie H Y, Wang J G, Fan R Y, Liu Y N 2011 IEEE Trans on Electromagnetic Compatibility 53 185

    [16]

    Zhang Y P, Da X Y, Xie T C 2014 High Power Laser and Particle Beams 02 234 [张亚普, 达新宇, 谢铁城 2014 强激光与粒子束 02 234]

    [17]

    Tesche F M, Butler C M 2003 Interaction Notes 588

    [18]

    Azaro R, Caorsi S, Donelli, M, Gragnani, G L 2002 Microwave Theory and Techniques, IEEE Transactions 50 2259

    [19]

    Shi D, Shen Y M, Ruan F M, Wei Z G, Gao Y G 2008 IEEE International Symposium on. Aug. 18-22 2008 p1-5

    [20]

    Mao X Y, Du P A 2010 Science China Technological Sciences 07 1993

    [21]

    Dehkhoda P, Tavakoli A, Moini R 2008 IEEE Transactions 50 208

Metrics
  • Abstract views:  5474
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Publishing process
  • Received Date:  17 July 2014
  • Accepted Date:  20 August 2014
  • Published Online:  05 January 2015

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