Side Lobe and Side Band Reduction of Time Modulated Circular Antenna Array Using Novel Particle Swarm Optimization Algorithm

This paper presents an approach to design 16-elements time modulated asymmetric circular antenna array (TMASCAA) for optimum far-field radiation pattern synthesis. By minimizing the sidelobe levels (SLLs), the far-field radiation pattern is designed to minimize the interference of TMASCAA. For achieving the ultra-low SLLs, an optimal combination of switch-ON time sequence and progressive phase delay is determined using a proposed meta-heuristics technique which is novel particle swarm optimization (NPSO). TMASCAA is also considered for the practical antenna at fundamental frequency f
0
= 2.4 GHz to calculate sideband levels (SBLs), feed network efficiency, and directivity using the NPSO technique.