A Novel Dielectric Resonator Antenna for Antenna-In-Package in Mobile Communication System

A dielectric resonator antenna (DRA) for antenna-in-package (AIP) is proposed for 4G/5G band communication, which is composed of DRA, probe, cavity, microstrip line and metal via. In order to expand the bandwidth, the antenna is optimized with stacked dielectric radiators. The stacked DRAs is adopted, and the base DRA is grooved to improve the antenna performance. The antenna gain is enhanced by loading metal parasitic elements. The rectangular cavity on the right side of the antenna is used for the integration and packaging of RF circuits. The packaging circuit is temporarily replaced by a microstrip patch. The simulation results show that the relative bandwidth of the proposed antenna is 14.3%. In general, the proposed DRA has achieved considerable performance in the 2.55-2.9GHz band, and can be used in mobile communication system.