Title :
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
fDate :
1/1/1997 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
