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2013 (Vol. 6, Issue: 17)
Article Information:

The Effect of Apertures Position on Shielding Effectiveness of Metallic Enclosures based on Modal Method of Moments

Chao Zhou and Ling Tong
Corresponding Author:  Chao Zhou 

Key words:  Apertures, greenís function, MoM, rectangular enclosure, Shielding Effectiveness (SE), ,
Vol. 6 , (17): 3125-3136
Submitted Accepted Published
January 12, 2013 February 07, 2013 September 20, 2013
Abstract:

In this study, an effective numerical method suitable for determination of electric field Shielding Effectiveness (SE) of rectangular enclosure with multiple rectangular apertures is presented. Assuming appropriate electric field distribution on the aperture, Electromagnetic fields inside the enclosure are determined using rectangular cavity Greenís function. Electromagnetic fields outside the enclosure and scattered due to the aperture are obtained using the free space Greenís function. Matching the tangential magnetic field across the apertures, the integral equation with aperture fields as unknown variables is obtained. The integral equation is solved for unknown aperture fields using the Method of Moments. From the aperture fields the electromagnetic SE of the rectangular enclosure is determined. The numerical results of the proposed technique are in very good agreement with data available in the literature and experimental results. It is shown that aperturesí position and shape, apertureí number, polarization have noticeable effect on the electric field SE.
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  Cite this Reference:
Chao Zhou and Ling Tong, 2013. The Effect of Apertures Position on Shielding Effectiveness of Metallic Enclosures based on Modal Method of Moments.  Research Journal of Applied Sciences, Engineering and Technology, 6(17): 3125-3136.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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