Resonant frequency optimization of coaxially fed rectangular microstrip antenna using Particle Swarm Optimization algorithm

Coaxial probe fed rectangular microstrip antenna is a popular type of patch antenna having applications in communication and radar systems. Particle Swarm Optimization (PSO) is a popular optimization algorithm and recently it is being used for design optimization of microstrip patch antennas. In this paper PSO has been used for optimization of resonant frequency of coaxial probe fed rectangular microstrip antenna. Investigation is made at different microwave frequencies and ranging between 3 GHz and 18 GHz. The optimization problem has three variables namely, patch length, patch width and position of the feed. Results encourage the use of PSO for optimal design.