Reduced ground plane aperture-coupled DRA fed by slotted microstrip for ultra-wideband application

Two dielectric resonators antenna (DRA) fed through slotted microstrip line for a wideband application is proposed. The two cylindrical DRs are asymmetrically situated with respect to the rectangular coupling aperture center with a defected ground plane. By optimizing the design parameters, two antenna configurations have been achieved: the first covering an impedance bandwidth of about 57%, from 8.02GHz to 14.55 GHz with power gain of 10dBi, and the second having an impedance bandwidth of about 54%, from 8.5GHz to 14.7 GHz, and a power gain of 12dBi. Results of the proposed antennas are presented and discussed.