A broadband and high gain millimeter-wave hybrid dielectric resonator antenna

A new high gain hybrid dielectric resonator antenna (HDRA) is proposed for millimeter-wave (mm-wave) communication systems operating in the frequency range of 57-64 GHz. A ring-shape dielectric resonator (DR) is excited by an aperture-coupled patch antenna to achieve multiple resonances and widen the antenna bandwidth. To enhance the antenna gain, the HDRA is surrounded with a metallic dented-cavity. In addition, the performance of its radiation pattern is improved by using grounded-metallic rings. The simulation results demonstrate a good performance in terms of bandwidths, gain, and radiation patterns.