Abstract
This paper illustrates optimization and comparative analysis for rectangular microstrip patch antenna loaded with ‘T’-shape slot utilizing manual (conventional) optimization and particle swarm optimization (PSO) with curve fitting. Initially, a conventional antenna has been designed by cutting ‘T’-shape slot in rectangular radiating patch and manually optimized by selecting some parameters of patch as variable. The bandwidth and resonant frequency data obtained from IE3D simulation tool by varying distinct parameters of the conventional ‘T’-shape slot loaded antenna have been used for generating the curve in Graphmatica (curve fitting software) and developing the PSO program in MATLAB for optimization purpose. Finally, the PSO-optimized antenna has been attained and its performance has been compared with both initial conventional ‘T’-shape slot loaded antenna and manually optimized antenna. Fragmentary bandwidth of PSO-optimized ‘T’-shape slot loaded antenna has been increased by 16.86% as compared to initial conventional ‘T’-shape slot loaded antenna and kept the resonant frequency at 2.477 GHz near the desired frequency of 2.45 GHz.
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