Title :
Omnidirectional dual-reflector shaping by concatenating conic sections
Author :
Moreira, Fernando J S ; Bergmann, José R.
Author_Institution :
Dept. Electron. Eng., Fed. Univ. of Minas Gerais, Belo Horizonte, Brazil
Abstract :
This work presents the shaping of axis-symmetric omnidirectional dual-reflector antennas. The shaping procedure is based on the consecutive concatenation of conic sections, in order to provide a uniform phase distribution together with a prescribed amplitude distribution over the antenna cylindrical aperture under geometrical optics (GO) principles. To illustrate the shaping procedure, an axis-displaced Cassegrain is designed to provide a uniform aperture illumination. The GO shaping results are validated using accurate method-of-moments analysis.
Keywords :
Antenna radiation patterns; Aperture antennas; Differential equations; Feeds; Geometrical optics; Lighting; Moment methods; Nonlinear equations; Reflector antennas; Tin;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
