Bandwidth enhancement of modified square fractal microstrip patch antenna using gap-coupling

Narrow bandwidth is a major constraint of microstrip antennas. This paper illustrates the design of a gap coupled modified square fractal microstrip patch antenna which has been designed to overcome this limitation. The intended design has an impedance bandwidth of 85.42% around the resonant frequency of 1.844 GHz. This antenna can be simultaneously used for Bluetooth, WLAN and WiMAX applications. IE3D Zeland simulation software has been used for the simulation of the proposed design.