Design of a circular patch antenna with admittance measurement for wireless communication

A circular microstrip patch antenna is designed and analyzed. Concentric vias are inserted into the patch, as a method for improving the antenna parameters, mainly admittance of the patch antenna. The various effects of increasing the number of vias are studied and analyzed - using FEKO software. The advantage of a circular patch over rectangular patch is that it has more directivity. An optimization technique is then proposed for the design of a circular microstrip antenna. The designed circular patch antenna is optimized using Particle Swarm Optimization, a technique that can find out the optimized value of the design parameters for a desired resonant frequency.