New hybrid design for a broadband high gain 60-GHz Dielectric Resonator Antenna

Underground mines is a special environment which features severe multipath fading and high attenuation rate requiring that antennas have low profile, simple structure, polarization diversity, directivity and high gain. A new broadband and high gain stacked pyramid Dielectric Resonator Antenna (DRA) with a superstrate has been designed for this particular application. The proposed antenna is composed of a superstrate, an aperture coupled feed, a stacked pyramid dielectric resonator and FSS-metallic strips stacked on the lower side of the superstrate. This antenna is designed to cover the unlicensed ISM frequency band at 60 GHz (57 GHz-65 GHz). To analyze the proposed antenna, numerical simulations is carried out with CST microwave studio, which is based on the finite integration method. For comparison and validation of the optimized results, Ansoft HFSS based on the finite element method is also used.