A Compact Dual Band Printed Antenna for WiMAX & HIPERLAN Applications

A single feed compact rectangular microstrip antenna for dual band application is proposed in this paper. Two T slits are introduced at the right edge of the patch to reduce the resonant frequency. For the proposed antenna two resonant frequencies are obtained at 3.51 GHz and 4.9 GHz with bandwidth of 15.8 MHz, return loss –31 dB and bandwidth of 35.19 MHz, return loss -13.5 dB respectively. An extensive analysis of the return loss, radiation pattern, gain and efficiency of the proposed antenna is presented. The size of the antenna has been reduced by 62.70% when compared to a conventional microstrip patch. The simple configuration and low profile nature of the proposed antenna make it suitable for the applications in Wireless communication system.