A compact dual resonance dielectric resonator antenna array with partial ground plane

Design of Triangular shaped two element dielectric resonator antenna (DRA) array is presented for wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications. In this paper, the DRA array is excited by conformal patch connected to microstrip line which is an effective feed mechanism and more efficient in energy coupling than other type of feeding techniques. The result shows that the proposed antenna achieves an impedance bandwidth from 2.16 GHz to 2.94 GHz and 3.22 to 3.63 GHz covering 2.4 GHz WLAN band and 3.5 GHz WiMAX band. Parametric studies are carried out by varying the height of the triangular DRA array and conformal patches. The proposed antenna gives appreciable gain and better radiation patterns at dual resonant frequencies.