Integral equation formulation of cylindrical feed-axisymmetric reflector coupling

Author

Parkinson, J.R. ; Mehler, M.J.

Author_Institution

C&S Antennas Ltd., Rochester, UK

Volume

137

Issue

1

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

11

Lastpage

17

Abstract

The problem of a cylindrical feed radiating in the presence of an axisymmetric reflector formulated in terms of a combined electric and magnetic field integral equation. This equation is simplified by means of an optical approximation and numerical solutions are obtained using the method of moments. The field radiated by the combination of feed and reflector is computed using a hybrid physical optics and moment method approach, where the effects of feed-reflector coupling are taken into account. Examples are given of the method applied to the analysis of a splash-plate feed and a dual-mode coaxial feed illuminating a paraboloidal reflector.

Keywords

antenna feeders; integral equations; reflector antennas; antenna feed; axisymmetric reflector; cylindrical feed; dual-mode coaxial feed; electric field integral equation; feed-reflector coupling; hybrid method; magnetic field integral equation; method of moments; numerical solutions; optical approximation; paraboloidal reflector; physical optics; reflector antenna; splash-plate feed;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings H

Publisher

iet

ISSN

0950-107X

Type

jour

Filename

52815