NDLI: A Uniform Asymptotic Solution for the Diffraction by a Right-Angled Dielectric Wedge

Content Provider	IEEE Xplore Digital Library
Author	Gennarelli, G. Riccio, G.
Copyright Year	1963
Abstract	We propose a uniform asymptotic solution for the field diffracted by a lossless right-angled dielectric wedge illuminated by a plane wave at normal incidence. The diffraction problem is solved by splitting the observation domain in the inner region of the wedge and the surrounding free-space. The scattered electric field in each region is assumed to be originated by a set of equivalent electric and magnetic surface currents involved in the well-known radiation integral. Such currents are localized on the interior and exterior faces of the wedge, and expressed in terms of the corresponding geometrical optics field. Useful analytical manipulations and asymptotic evaluations of the resulting integrals allow one to obtain the diffraction coefficients in terms of the Fresnel's reflection and transmission coefficients of the structure and the transition function of the uniform geometrical theory of diffraction. The related diffracted field compensates the discontinuities of the geometrical optics field and gives total field levels in good agreement with finite difference time domain results.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	898
Ending Page	903
Page Count	6
File Size	413162
File Format	PDF
ISSN	0018926X
Volume Number	59
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diffraction Dielectrics Finite difference methods Time domain analysis Surface waves Approximation methods Electric fields uniform asymptotic physical optics solution Dielectric wedge diffraction
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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