Geometry and Weight Optimization for Minimizing Sidelobes in Wideband Planar Arrays

被引：34
|
作者：
Bevelacqua, Peter J. [1 ]
Balanis, Constantine A. [1 ]
机构：
[1] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2009年 / 57卷 / 04期
关键词：
Array optimization; minimizing sidelobes; PSO; wideband arrays;
D O I：
10.1109/TAP.2009.2015853
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Arrays are often analyzed using a narrowband or single-frequency assumption for simplicity. However, for arrays used in wideband applications this simplification is not valid. In this paper, a sidelobe-minimizing method is presented that efficiently determines the optimal weights given a specified beamwidth for wideband planar arrays of elements scanned to broadside. This method can be executed significantly faster than optimal wideband weighting methods developed previously. This speedup in computation time allows for simultaneous weight-geometry optimization. Optimal array geometries are determined using the Particle Swarm Optimization (PSO) algorithm in conjunction with the optimal weights in order to minimize sidelobe levels in wideband arrays. Results (optimal positions, weights and sidelobe levels) are presented for wideband arrays of 4-7 elements.
引用
收藏
页码：1285 / 1289
页数：5
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