Concurrent PSO and FDR-PSO based reconfigurable phase-differentiated antenna array design

This work describes a method of designing a reconfigurable dual-beam antenna array using a novel concurrent PSO (CONPSO) and different variants of FDR-PSO algorithms. The design problem is to find element excitations that will result in a sector pattern main beam with low side lobes with additional requirement that the same excitation amplitudes applied to the array with zero-phase should result in a high directivity, low side lobe and pencil shaped main beam. In order to test the performances of various PSO algorithms, the results of real-coded genetic algorithm is considered, for the purpose of comparison. Experiment results clearly indicate the better performance of various FDR-PSO and proposed CONPSO algorithms over simple PSO and genetic algorithms in terms of solution quality, and consistency. The proposed CONPSO algorithm is very much suitable for implementation in parallel computer.