A wideband plus shaped split dielectric resonator antenna for wireless applications

In this work, a plus shaped splitted dielectric resonator antenna (DRA) is introduced for wideband applications. The designed antenna structure is excited by using a simple co-axial probe feed. The input impedance bandwidth of proposed antenna below -10 dB is 95.7% (3.05 GHz-8.65 GHz) with a center frequency 5.85 GHz. This antenna provides average gain and approximate radiation efficiency of 5.18 dBi and 78% respectively in the working frequency range of 3.05 GHz to 8.65 GHz. Wideband operation is obtained due to the combination of fundamental mode TE
_δ11
with higher order mode TE
_δ21
at 3.6 GHz and 6.1 GHz respectively. Parametric analysis was performed to get the optimum values to design proposed antenna. The proposed antenna could be used for Wi-Max and WLAN application.