Coaxial fed hexagonal dielectric resonator antenna for multifrequency operation

Abstract

Hexagonal dielectric resonator antenna (HDRA) for multifrequency operation is proposed and investigated experimentally. The proposed antenna, excited by a single coaxial feed, resonates at four frequencies centered at 2.215, 2.784, 3.445, and 3.955 GHz with identical polarization. The return loss, VSWR, bandwidth, radiation patterns and half-power beam width are measured and discussed. Multiple resonances with the same polarization and broad radiation patterns suggest the suitability of the antenna for multifrequency wireless applications.