A simple enhanced cavity model for microstrip patch antennas, and, Calculations of optimized parameters using a genetic algorithm

There is a need in today's industry to model the resonant frequency of the rectangular microstrip patch antenna very accurately because of its narrow bandwidth and increased use in communication applications. In this thesis, the cavity model is presented and updated in order to accurately analyze microstrip patch antennas. Also a genetic algorithm (GA) is used to optimize the patch for length and width so that in turn the maximum resonant frequency could be determined. The enhanced cavity model is shown to give more accurate results than another popular model while still being quite a simple model. It is further demonstrated that the GA can provide the global maximum for resonant frequency given a range for length and width of the patch.