Numerical Analysis of Quasioptical Multireflector Antennas in 2-D With the Method of Discrete Singularities: E-Wave Case

Author

Nosich, Andrey A. ; Gandel, Yuriy V.

Author_Institution

Sch. of Math., Kharkiv Nat. Univ.

Volume

55

Issue

2

fYear

2007

Firstpage

399

Lastpage

406

Abstract

Numerical method for modeling the E-polarized wave scattering by electrically large quasioptical two-dimensional (2-D) reflectors is presented. Reflectors are assumed zero-thickness and perfectly electrically conducting. Efficient numerical solution is obtained from the coupled singular integral equations discretized using new quadrature formulas of interpolation type. It has controlled accuracy and deals with small-size matrices. To simulate a small-horn feeding, the incident field is taken as a beam generated by a complex-source-point (CSP) current. Presented numerical results validate empirical rule of -10 dB edge illumination needed to provide the best electromagnetic performance of reflector

Keywords

electromagnetic wave scattering; horn antennas; integral equations; interpolation; numerical analysis; reflector antenna feeds; 2-D reflector; CSP; E-polarized wave scattering; E-wave case; complex-source-point current; discrete singularity method; interpolation; numerical analysis; quasioptical multireflector antennas; singular integral equation; small-horn feeding; Electromagnetic scattering; Geometrical optics; Integral equations; Interpolation; Numerical analysis; Optical scattering; Physical optics; Physical theory of diffraction; Reflector antennas; Two dimensional displays; Boundary integral equations; method of discrete singularities (MDS); reflector antennas; scattering;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2006.889811

Filename

4084797