A new dual C-shaped rectangular dielectric resonator based antenna for wideband circularly polarized radiation

摘要

This article presents a new dual C-shaped rectangular dielectric resonator (DR) based antenna for generation of wideband circularly polarized (CP) radiation. The proposed antenna comprises of a pair of C-shaped rectangular dielectric DR and a metal strip with a coaxial probe. By utilization of a metal strip at the side surface of C-shaped rectangular DR, the wideband CP radiation is achieved from the proposed dielectric resonator antenna (DRA). Fundamental orthogonal modes (TE11x and TE11y) are excited using the rectangular DRA with a metal strip for the generation of CP fields. The proposed antenna with dual C-shaped rectangular CP DRA provides the measured -10 dB reflection coefficient bandwidth of 30.07% (3.22GHz-4.36GHz) with measured 3-dB axial ratio bandwidth of 14.81% (3.25GHz-3.77GHz) at the boresight. The proposed antenna covers the useful Wi-MAX band.