Triple band hybrid cylindrical dielectric resonator antenna for WiMAX/WLAN applications

In this paper, triple band cylindrical dielectric resonator antenna with a novel mirostrip line feed is examined. Triangular shaped mirostrip line generates two different modes (i.e. HE_11δ and TM_01δ) in CDRA at 3.20 GHz and 5.37 GHz respectively. The proposed antenna design operates in three different frequency bands i.e. 2.55-2.68 GHz; 2.96-3.59 GHz; 5.19-6.19 GHz with the fractional bandwidth of 4.9%; 19.23% and 17.57% respectively. Proposed antenna design is applicable WLAN (5.2/5.8 GHz) and WiMAX (2.5/3.5/5.5 GHz) applications. Proposed design has been investigated, optimized using Ansoft HFSS simulation software and results have also been verified using CST Microwave Studio.