Design of Modified Grounded Microstrip Antenna for Dual Band Operation in Wireless Communication

A design of a dual-band rectangular microstrip antenna using a modified ground plane has been presented in this article. The ground plane has been shifted to an optimum position and a strip has been attached to the ground. Modified ground plane changes the effective capacitance and inductance in the equivalent circuit of microstrip patch and thus a lower frequency has been resonated. The overall size of the presented antenna is 25×23mm
²
. The resonating frequencies of the designed antenna have been found as 2.6GHz and 5.5GHz. The compactness of the designed antenna has been obtained as 81.2% with respect to the lowest resonant frequency and the proposed antenna has been found to be applicable for WiMAX and HiperLAN-2 applications.