A Dualband Dielectric Resonator Antenna over a Metasurface with Circular Polarization

摘要

Ahstract-A dualband rectangular dielectric resonator antenna (DRA) with a circular patch over a metasurface for achieving circularly polarized radiation is proposed. The proposed antenna is comprised of a substrate with ground plane, a rectangular dielectric resonator (DR), a metasurface, a circle patch, and a coaxial probe. The metasurface upon the substrate can realize the circular polarization. The circle patch upon the rectangular DR can increase the reflection coefficient and realize the dual-band working mode. Simulation results show that the proposed DRA has a dual band of operating frequency which is 24.7% (4.23 GHz - 5.42 GHz) and 8.5% (5.60 GHz - 6.10 GHz), respectively. Also, the antenna has a circular polarization in the frequency range 5.60 GHz - 6.10 GHz and it could be widely used for 5G wireless communication. The antenna proposed in this paper has achieved dualband and circular polarization of dielectric resonator antenna simultaneously.