Geometry and Weight Optimization for Minimizing Sidelobes in Wideband Planar Arrays
- 7 April 2009
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 57 (4), 1285-1289
- https://doi.org/10.1109/TAP.2009.2015853
Abstract
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.Keywords
This publication has 13 references indexed in Scilit:
- Minimum Sidelobe Levels for Linear ArraysIEEE Transactions on Antennas and Propagation, 2007
- Linear array geometry synthesis with minimum sidelobe level and null control using particle swarm optimizationIEEE Transactions on Antennas and Propagation, 2005
- A Hybrid Approach for the Optimal Synthesis of Pencil Beams Through Array AntennasIEEE Transactions on Antennas and Propagation, 2004
- Particle swarm optimization in electromagneticsIEEE Transactions on Antennas and Propagation, 2004
- Convex OptimizationPublished by Cambridge University Press (CUP) ,2004
- Broadband DOA estimation using frequency invariant beamformingIEEE Transactions on Signal Processing, 1998
- Antenna array pattern synthesis via convex optimizationIEEE Transactions on Signal Processing, 1997
- Synthesis of unequally spaced arrays by simulated annealingIEEE Transactions on Signal Processing, 1996
- Eigenstructure techniques for 2-D angle estimation with uniform circular arraysIEEE Transactions on Signal Processing, 1994
- On properties and design of nonuniformly spaced linear arrays (antennas)IEEE Transactions on Acoustics, Speech, and Signal Processing, 1988