Dielectric Resonator Antenna Arrays for Microwave Energy Harvesting and Far-Field Wireless Power Transfer
In this paper, the authors present Dielectric Resonator Antennas (DRAs) for efficient energy harvesting or wireless power transfer in the microwaves regime. A single DRA and 1x3 arrays were used to build foundation profiles for DRAs as energy absorbers. The proposed structures were designed and fabricated to resonate around 5.5GHz. The study examined different factors that affect the absorbed power efficiency. The size of ground plane and coupling between Dielectric Resonators (DRs) elements in an array were studied, highlighting their effects on the overall efficiency of the antenna structure for different incident polarizations.