Frequency reconfigurable dielectric resonator antenna for WiMAX/WLAN applications

A CPW-fed frequency reconfigurable dielectric resonator antenna (DRA) is studied and presented for WiMAX and wireless local area network applications. The frequency tunable DRA is able to alter the frequency at three different dual bands frequency. The rectangular dielectric resonator has a permittivity of 10. Two PIN diode switches are located on the connecting lines of the network, which feeds the three dielectric resonator elements. Three dual-band modes with center frequency of 2.4 and 5 GHz in ON-ON state, 2.5 and 5.2 GHz in OFF-ON state, 3.5 and 5.8 GHz in ON-OFF state by switching of the diodes are achieved. The proposed dielectric resonator (DR) antenna has a compact size of 33 x 45 mm(2) with a DR thickness of 2.8 mm. the simulation and measurement results are compared to prove the good agreement and performance of the proposed antenn