Title :
Shaping Axis-Symmetric Dual-Reflector Antennas by Combining Conic Sections
Author :
Moreira, Fernando J S ; Bergmann, José R.
Author_Institution :
Dept. of Electron. Eng., Fed. Univ. of Minas Gerais, Belo Horizonte, Brazil
fDate :
3/1/2011 12:00:00 AM
Abstract :
A simple procedure for the shaping of axis-symmetric dual-reflector antennas is described. The shaping procedure is based on the consecutive concatenation of local conic sections suited to provide, under geometrical optics (GO) principles, an aperture field with uniform phase, together with a prescribed amplitude distribution. The procedure has fast numerical convergence and is valid for any circularly symmetric dual-reflector configuration. To illustrate the procedure two representative configurations are investigated. The GO shaping results are validated using accurate method-of-moments analysis.
Keywords :
convergence of numerical methods; geometrical optics; method of moments; reflector antennas; aperture field; axis symmetric dual reflector antenna; conic sections; consecutive concatenation; geometrical optics principle; method-of-moments analysis; numerical convergence; Geometrical optics; reflector antennas; reflector shaping;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2010.2103028
