The dyadic diffraction coefficient for a perfectly conducting wedge
P. H. Pathak,R. G. Kouyoumjian +1 more
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In this article, a ray-fixed coordinate system is introduced and used to derive a new, compact form of the dyadic diffraction coefficient for an electromagnetic wave incident on a perfectlyconducting wedge.Abstract:
: A ray-fixed coordinate system is introduced and used to derive a new, compact form of the dyadic diffraction coefficient for an electromagnetic wave incident on a perfectly-conducting wedge. This diffraction coefficient is merely the sum of two dyads; furthermore, with the use of simple correction factors which have the same form for plane, cylindrical, conical or spherical waves incident on the edge, the dyadic diffraction coefficient is valid in the transition regions of the shadow and reflection boundaries.read more
Citations
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Book ChapterDOI
Techniques for High-Frequency Problems
TL;DR: In this article, the authors employ approximations based on high-frequency techniques for performing an efficient analysis of electromagnetic radiating systems that are large in terms of the wavelength, which is not the case for most of the existing techniques.
Journal ArticleDOI
A uniform GTD solution for the diffraction by strips illuminated at grazing incidence
R. Tiberio,R. G. Kouyoumjian +1 more
TL;DR: In this article, an asymptotic solution for the electromagnetic diffraction by a perfectly conducting strip illuminated at grazing incidence is obtained by an extension of the uniform GTD for plane, cylindrical, and spherical wave illuminations.
Journal ArticleDOI
Ray-optical prediction of radio-wave propagation characteristics in tunnel environments. 1. Theory
TL;DR: In this paper, a right-angle wedge with different impedance boundary conditions at its two surfaces is considered, where a functional transformation is used to simplify the boundary conditions, and the eigenfunction solutions for the transformed functions are replaced by integral representations, which are then evaluated by the modified Pauli-Clemmow method of steepest descent.
Journal ArticleDOI
High-frequency scattering from a wedge with impedance faces illuminated by a line source. I. Diffraction
TL;DR: In this paper, the authors considered the problem of evaluating the scattered field at a finite distance from the edge of an impedance wedge which is illuminated by a line source, and derived an exact expression for the diffracted field and the surface wave contributions.
References
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Book
Time-harmonic electromagnetic fields
TL;DR: In this paper, a revised version of the Revised edition of the book has been published, with a new introduction to the concept of plane wave functions and spherical wave functions, as well as a detailed discussion of the properties of these functions.
Journal ArticleDOI
Geometrical Theory of Diffraction
TL;DR: The mathematical justification of the theory on the basis of electromagnetic theory is described, and the applicability of this theory, or a modification of it, to other branches of physics is explained.
Journal ArticleDOI
Diffraction by an Aperture
TL;DR: In this paper, the geometrical theory of diffraction was introduced to account for diffraction by introducing new rays called diffracted rays, which are produced when incident rays hit the aperture edge.