Pattern optimization of a reflector antenna with planar-array feeds and cluster feeds

Author

Saka, Birsen ; Yazgan, Erdem

Author_Institution

Dept. of Electr. & Electron. Eng., Hacettepe Univ., Ankara, Turkey

Volume

45

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

93

Lastpage

97

Abstract

We study pattern optimization of a parabolic reflector with planar-array feeds and cluster feeds. The optimization is carried out within the conjugate gradient method (CGM) in which the optimum weight vector of a linearly constrained minimum variance (LCMV) beam former is used as the initial condition. Optimization with the CGM to determine element weights is found to yield better sidelobe suppression and true settlement of desired scan direction compared to the LCMV beam former and conjugate field matching (CFM) techniques for the continuous beam-scanning case. The proposed method is also applied to multibeam reflector-antenna design

Keywords

antenna feeds; antenna radiation patterns; conjugate gradient methods; interference suppression; multibeam antennas; optimisation; reflector antenna feeds; scanning antennas; CGM; LCMV beam former; cluster feeds; conjugate gradient method; continuous beam-scanning case; linearly constrained minimum variance beam former; multibeam reflector-antenna design; optimum weight vector; parabolic reflector; pattern optimization; planar-array feeds; reflector antenna; scan direction; sidelobe suppression; Antenna feeds; Electromagnetic scattering; Geometry; Gradient methods; Iterative methods; Lenses; Optimization methods; Phased arrays; Reflector antennas; User-generated content;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.554245

Filename

554245