NDLI: Assessment of Shielding Effectiveness of Gaskets by Means of the Modified Bethe's Coupling Theory

Content Provider	IEEE Xplore Digital Library
Author	Pouhe, D. Monich, G.
Copyright Year	1964
Abstract	This paper investigates estimates for the shielding effectiveness (SE) of finger stock gaskets. Valuable insight into the nature of the openings principally responsible for coupling between gasket and mating surfaces are gained via a dipole characterization. It is shown that through visualization of the real contact area, the overall length of the engaged active contact region between fingers and their mating surfaces is generally smaller than the finger's width, thus leading to an additional ldquoellipse-like'' shape opening between two adjacent fingertips, which is much greater than the spacing slot. As a consequence, the dipole moment exhibited by the elliptic aperture is dominant and is responsible for the radiated fields into or from a shielding enclosure. Modified Bethe's coupling theory for small apertures is applied to derive these fields and assess the SE of the gaskets. The validity and accuracy of the analysis become obvious in view of the good correlation with measurements.
Sponsorship	IEEE Electromagnetic Compatibility Society
Starting Page	305
Ending Page	315
Page Count	11
File Size	1045614
File Format	PDF
ISSN	00189375
Volume Number	50
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	visualization of active contact regions Aperture coupling Bethe's theory dipole moments gasket shielding effectiveness (SE)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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