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Tytuł pozycji:

Modeling Electromagnetic Field Coupling Through Apertures for Radio-Frequency Interference Applications.

Tytuł :
Modeling Electromagnetic Field Coupling Through Apertures for Radio-Frequency Interference Applications.
Autorzy :
Ren, Liehui
Fan, Jun
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Temat :
MAGNETIC couplings
RADIO interference
GREEN'S functions
PORTS (Electronic computer system)
Źródło :
IEEE Transactions on Electromagnetic Compatibility; Oct2015, Vol. 57 Issue 5, p1037-1048, 12p
Czasopismo naukowe
Electromagnetic field coupling between a digital platform and a radio-frequency antenna through an aperture represents one of the typical coupling paths responsible for radio-frequency interference (RFI) issues in mixed-signal systems. Conventional approaches of modeling radiation through an aperture and evaluating the shielding effectiveness of a metallic enclosure with apertures for classic electromagnetic interference (EMI) applications are not sufficient to handle modern RFI challenges. This paper discusses a segmentation method, together with impedance network representation, employed to divide the enclosure EMI problem into exterior and interior problems. With a port definition based on the vector roof-top basis function, the impedance network for the exterior domain was rigorously formulated using a method of moments solution for mixed potential integral equations. The impedance network for the interior domain was computed using the cavity method based on the analytical formula of 3-D Green's functions in a rectangular cavity. Connecting a pair of impedance networks yielded the overall impedance relationship between the interior port and the exterior port. Ewald's transform was used to accelerate the computation of Green's functions in a cavity with metallic walls, which yielded fast convergence of the series summation in Green's functions. Good agreement with a commercial full-wave tool validated the proposed approach. [ABSTRACT FROM AUTHOR]
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