Design of a new multiband dielectric resonator antenna for WLAN/WiMAX applications

A novel and petite edge fed dielectric resonator antenna (DRA) is achieved by cutting the right portion of rhombic DRA with a rhombic slot at the centre and also with partial ground plane is presented for wireless communication applications. A strip line is used as feeding structure for the dielectric resonator. Parametric analysis on the antenna is performed using HFSS solver by varying the height of the DR, lengths of the feed line and partial ground structure are presented. From the results it is observed that the proposed DRA has wide frequency range from 4.50GHz to 6.23GHz with an impedance bandwidth of 32.72%. The presented DRA has multiple bands and it resonates at 3GHz (Center frequency of S-Band), 5GHz (IEEE 802.11ac) and 5.8GHz (IEEE 802.16d). The peak gain of the proposed DRA is 4.66dBi and bandwidth offered is 1.73GHz.