Binary bat swarm algorithm for thinning antenna elements in linear array

Binary bat swarm optimization algorithm (BBSO) has been utilized to the synthesis of a large antenna array having linear geometry. Thinning technique is adopted to synthesize the large array. This thinning is difficult to achieve using traditional stochastic algorithms as they fall short in optimizing large number of discrete parameters. The work in the paper depicts how efficiently a large, optimized array can be derived by using thinning. The BBSO is utilized to derive the optimal positions of the periodic array to achieve a peak sidelobe level (PSLL) below -20dB. Reduced PSLL is requisite for modern communications systems that help them in avoiding interference from unwanted directions. A linear array having 40 elements is considered for synthesis.