Focal region fields of distorted reflectors

Author

Buris, N.E. ; Christodoulou, C.G. ; Kauffman, J.F.

Author_Institution

Motorola, Boynton Beach, FL, USA

Volume

43

Issue

12

fYear

1995

fDate

12/1/1995 12:00:00 AM

Firstpage

1478

Lastpage

1482

Abstract

The problem of the focal region fields scattered by an arbitrary surface reflector under uniform plane wave illumination is solved. The physical-optics (PO) approximation is used to calculate the current induced on the reflector. The surface of the reflector is described by a number of triangular domain-wise fifth-degree bivariate polynomials. A two-dimensional Gaussian quadrature is employed to numerically evaluate the integral expressions of the scattered fields. No Fresnel or Fraunhofer approximations are made. The relation of the focal fields problem to surface compensation techniques and other applications are mentioned. Several examples of distorted parabolic reflectors are presented and discussed

Keywords

antenna theory; electromagnetic induction; electromagnetic wave reflection; electromagnetic wave scattering; physical optics; polynomials; reflector antennas; antennas; arbitrary surface reflector; distorted parabolic reflectors; distorted reflectors; focal region fields; integral expressions; physical-optics approximation; scattered fields; surface compensation techniques; triangular domain-wise fifth-degree bivariate polynomials; two-dimensional Gaussian quadrature; uniform plane wave illumination; Apertures; Current density; Feeds; Lighting; Optical scattering; Optical surface waves; Pattern matching; Polynomials; Shape; Surface waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.475941

Filename

475941