The geometrical theory of diffraction for axially symmetric reflectors
W. Rusch,O. Sorensen +1 more
TLDR
In this article, the authors present analytical, computational, and experimental results for commonly encountered reflector geometries, both to illustrate the general principles and to present a compact summary of generally applicable formulas.Abstract:
The geometrical theory of diffraction (GTD) (cf. [1], for example) may be applied advantageously to many axially symmetric reflector antenna geometries. The material in this communication presents analytical, computational, and experimental results for commonly encountered reflector geometries, both to illustrate the general principles and to present a compact summary of generally applicable formulas.read more
Citations
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Journal ArticleDOI
Diffraction by an arbitrary subreflector: GTD solution
TL;DR: Rahmat-Samii, Mittra, and Galindo-Israel as discussed by the authors studied the high-frequency asymptotic solution of diffraction by a conducting subreflector using Keller's geometrical theory.
Journal ArticleDOI
Rim loaded reflector antennas
O. Bucci,G. Franceschetti +1 more
TL;DR: A general theory of reflector antennas loaded by surface impedances is presented in this paper, where the spatial variation of primary illumination is taken into account using a generalized slope diffraction coefficient.
Proceedings ArticleDOI
Fusion of radar and optical sensors for space robotic vision
TL;DR: The results indicate that a microwave/optical sensor fusion system is possible, given sufficient computing power and accurate radar cross section measuring systems.
Journal ArticleDOI
Caustics and caustic corrections to the field diffracted by a curved edge
TL;DR: In this paper, the caustics for the singly diffracted rays from a circular disk are investigated when the rays emanate from a source which is placed off the axis of the disk.
Journal ArticleDOI
Aperture integration and GTD techniques used in the NEC reflector antenna code
Shu Lee,R. Rudduck +1 more
TL;DR: The numerical electromagnetics code (NEC) reflector antenna code has been sent to over 50 companies, government agencies, and universities and is known to be in extensive use by several of these organizations.
References
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Journal ArticleDOI
A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface
R.G. Kouyoumjian,P.H. Pathak +1 more
TL;DR: In this article, a compact dyadic diffraction coefficient for electromagnetic waves obliquely incident on a curved edse formed by perfectly conducting curved plane surfaces is obtained, which is based on Keller's method of the canonical problem, which in this case is the perfectly conducting wedge illuminated by cylindrical, conical, and spherical waves.
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.
Journal ArticleDOI
Reflector antenna radiation pattern analysis by equivalent edge currents
G. James,V. Kerdemelidis +1 more
TL;DR: In this paper, the edge currents derived from the edge diffraction theory for a halfplane were used to obtain the radiation patterns of a parabeloidal reflector antenna when illuminated by a source at the focus.
Book
Asymptotic evaluation of the field at a caustic
Irvin Kay,Joseph B. Keller +1 more
TL;DR: In this article, the geometrical optics field is obtained for a plane wave incident on a parabolic cylinder, where the wave is obtained in its lowest order at the focus and in the neighborhood of the focus.
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A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface
R.G. Kouyoumjian,P.H. Pathak +1 more
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