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Abstract
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Article Information:
Study of Shielding Properties of a Rectangular Enclosure with Apertures Having Different Shapes but Same Area Using Modal Method of Moments
Chao Zhou and Ling Tong
Corresponding Author: Chao Zhou
Submitted: May 30, 2012
Accepted: June 21, 2012
Published: January 11, 2013 |
Abstract:
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In this study, electric field Shielding Effectiveness (SE) of rectangular enclosure with apertures
illuminated by vertical polarization plane wave has been studied by using modal method of moment technique.
Electric field SE of enclosure with different shape apertures but same area has been c alculated at three different
points inside enclosure. To achieve this, assuming appropriate electric field distribution on the aperture, fields inside
the cavity are determined using rectangular cavity Green’s function. Electromagnetic fields outside the cavity and
scattered due to the aperture are obtained using the free space Green’s function. Matching the tangential magnetic
field across the apertures, the integral equation with aperture fields as unknown variables is obtained. A very good
agreement among the results of the proposed technique, results available in the literature and experimental results is
observed. The simulation results show that the electric field SE is seriously affected by calculation points, aperture
shape and the number of aperture. It has been shown that usual assumption made in EMC literature that lower
electric field SE near the aperture than at location inside the enclosure farther away from the aperture is not always
true to square aperture at some frequency and square aperture has higher electric field SE than rectangular aperture
even though they have same area.
Key words: Green’s function, MoM, rectangular enclosure, Shielding Effectiveness (SE), single aperture, ,
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Abstract
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Cite this Reference:
Chao Zhou and Ling Tong, . Study of Shielding Properties of a Rectangular Enclosure with Apertures Having Different Shapes but Same Area Using Modal Method of Moments. Research Journal of Applied Sciences, Engineering and Technology, (02): 680-688.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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