Bandwidth Enhancement of Microstrip Patch Antenna Using Jerusalem Cross-Shaped Frequency Selective Surfaces by Invasive Weed Optimization Approach
In this paper, the authors present a novel approach for improving the bandwidth of a microstrip patch antenna using Jerusalem Cross-shaped Frequency Selective Surfaces (JC-FSSs) as an artificial magnetic ground plane. The Invasive Weed Optimization (IWO) algorithm is employed to derive optimal dimensions of the patch antenna and JC-FSS element in order for the whole structure to work at 5.8GHz with consideration of gain. For the most efficient design, the antenna and FSS ground plane are optimized together, rather than as separate components. Simulation results demonstrate that this optimum configuration (the microstrip patch antenna over the artificial magnetic ground plane) have a broad bandwidth of about 10.44%.