Design optimization of microstrip fed rectangular microstrip antenna using differential evolution algorithm

Microstrip Antenna (MSA) found widespread applications in satellite communications, wireless and microwave systems, direct broadcast systems; due to their reduced cost and compact-planar structure. Differential Evolution (DE) algorithm is a recent evolutionary computing technique. In this paper, we have implemented DE algorithm to optimize the resonant frequencies of the inset line fed rectangular microstrip patch antenna considering their geometrical design parameters like patch length, patch width and the length of the inset fed as an unknown variables. Simulations have been done for different microwave frequencies (3 to 18 GHz) for the optimized antennas.