DocumentCode :
818099
Title :
Effect of near field radiators on the radiation leakage through perforated shields
Author :
Ali, Shabista ; Weile, Daniel S. ; Clupper, Thomas
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Delaware, Newark, DE, USA
Volume :
47
Issue :
2
fYear :
2005
fDate :
5/1/2005 12:00:00 AM
Firstpage :
367
Lastpage :
373
Abstract :
The electromagnetic coupling through an infinite conducting sheet perforated with a finite array of apertures excited by a metal radiator placed in its near field is investigated. The coupling is analyzed numerically by the method of moments (MoM) with an emphasis on understanding the effect of the interactions between the array of apertures and the metal radiator placed in its proximity. The radiation leakage through the array of apertures is found to be significant due to the proximity to the antenna, even if the apertures are electrically small. The effect of a number of other factors like antenna size, antenna type, aperture spacing, and aperture sizes on the extent of radiation leakage occurring due to coupling between the array of apertures and the radiator is also investigated. Numerical results confirm that plane wave theory underestimates the electromagnetic coupling through small apertures by antennas placed in their near field.
Keywords :
antenna arrays; antenna radiation patterns; aperture antennas; conducting bodies; electromagnetic coupling; electromagnetic fields; electromagnetic shielding; method of moments; MoM; antenna size; antenna type; aperture sizes; aperture spacing; apertures finite array; electromagnetic coupling; infinite conducting sheet; metal radiator; method of moments; near field radiators; perforated shields; plane wave theory; radiation leakage; Antenna arrays; Aperture antennas; Aperture coupled antennas; Electromagnetic analysis; Electromagnetic coupling; Electromagnetic interference; Electromagnetic radiation; Electromagnetic scattering; Electromagnetic shielding; Near-field radiation pattern; Apertures; electromagnetic coupling; electromagnetic interference (EMI); electromagnetic shielding; integral equations;
fLanguage :
English
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9375
Type :
jour
DOI :
10.1109/TEMC.2005.847372
Filename :
1433062
Link To Document :
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