Abstract
The main objective of the present study is to achieve the reconfigurability of a cylindrical dielectric resonator antenna (CDRA). The CDRA is excited with two different modes; the HEMjjg mode is excited via an aperture etched on the ground under the center of the CDRA, where the TM 01δ mode is excited from an etched slot under the side of the CDRA, the reconflgurabilty is realized using two PIN diodes. Two different cases of PIN diode (D1-ON/D2-OFF and vice versa) are investigated and analyzed. The proposed cylindrical dielectric resonator antenna (CDRA) can provides two bands around 3.77 GHz and 5.5 GHz with a reflection coefficient below than −10dB which is appropriate for WiMAX and WLAN applications, respectively. The antenna gain is stable in the two bands 3.77GHz/5.5GHz with 3.8 dBi and 4.43dBi, respectively. The simulation is performed using two simulators; the CST Microwave Studio and the HFSS Ansoft package.
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