Microstrip antennas are one of the most popular antenna types, since they are lightweight, have simple geometries and are inexpensive to fabricate. In a circular microstrip antenna designing, it is important to determine the resonant frequency of the antenna accurately because the antenna has narrow bandwidth and can only operate in the vicinity of the resonant frequency. So, a theory to determine the resonant frequency is helpful in antenna design.Neural Network Model (NNM) is an emerging field of mathematical analysis which has acquired major role in recent times as a powerful tool for...