A Frequency Reconfigurable X-shaped Antenna for WiMAX/ WLAN Band

A compact (
$20\times 20\times 1.6\ \text{mm}^{3}$
) dual band x-shaped frequency reconfigurable antenna with slot and stubs on the ground plane is proposed. The simulated result for return loss, gain and far field pattern are presented in this communication. By controlling the switching state of p-i-n diode, reconfigurability in the resonant frequency between WLAN (5.64 GHz) and WiMAX (3.66 GHz) is achieved.