Bandwidth enhancement of microstrip patch antenna using Curve fitting based Differential Evolution and Cuckoo Search optimization - a comparative study

Microstrip patch antenna has extensive applications in areas requiring light weight and low profile antenna sub system. Differential Evolution (DE) algorithm and Cuckoo Search (CS) algorithm are modern optimization algorithms used here for determining the design parameters of microstrip antenna. In literature, there does not exist any direct relation between the bandwidth of a microstrip patch antenna with its design parameters. In this paper, a relationship between bandwidth and geometrical parameters of co-ax fed microstrip patch antenna has been established using Curve fitting model. The investigation is performed for microwave frequencies over a certain range. A comparative study is performed between the results obtained for bandwidth enhancement by optimizing the patch length, patch width and the position of feed using DE and CS algorithms.