GO Shaping of Omnidirectional Dual-Reflector Antennas for a Prescribed Equi-Phase Aperture Field Distribution

Author

Moreira, Fernando José da Silva ; Prata, Aluizio, Jr. ; Bergmann, José Ricardo

Author_Institution

Dept. of Electron. Eng., Univ. Fed. de Minas Gerais, Belo Horizonte

Volume

55

Issue

1

fYear

2007

Firstpage

99

Lastpage

106

Abstract

A formulation is presented for shaping dual-reflector antennas designed to offer an omnidirectional coverage. The shaping procedure is based on geometrical optics (GO) principles and assumes a uniform phase distribution for the aperture field. Two distinct dual-reflector arrangements, based on the axis-displaced Cassegrain (ADC) and ellipse (ADE) configurations, are investigated. The GO shaping results are validated using the accurate analysis provided by the method-of-moments technique

Keywords

aperture antennas; geometrical optics; method of moments; reflector antennas; ADC; GO shaping; axis-displaced Cassegrain; equiphase aperture field distribution; geometrical optics; method-of-moments technique; omnidirectional dual-reflector antennas; Aperture antennas; Feeds; Geometrical optics; Geometry; Lighting; Microwave antennas; Microwave communication; Moment methods; Radar antennas; Reflector antennas; Omnidirectional antennas; reflector antennas; reflector shaping;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2006.888396

Filename

4052621