A Wideband Rectangular DRA Excited by a Differential Power Divider

Abstract

A differentially fed rectangular dielectric resonator antenna is presented. In this paper, a balanced power divider (PD) is used to feed the proposed DRA. The rectangular DRA can be excited by a wide bandwidth with two modes which are $\mathrm{TE}_{\mathbf{11\delta}}$ and $\mathrm{TE}_{\mathbf{11(\delta +1)}}$, using the differential feed. The differential impedance bandwidth is successfully simulated as about 43.3% (2.48 - 3.8 GHz). The designed differential DRA has a broadside radiation pattern with a max gain of 5.8 dB.