Title :
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
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.888396
