Single feed aperture-coupled wideband dielectric resonator antenna with circular polarization for Ku-band applications

Abstract

A novel single feed aperture-coupled wideband dielectric resonator antenna (DRA) exhibiting righ-handed circular polarization (RHCP) operating in the Ku-band frequency range is presented. The aperture-coupled single feed design utilizes back-side microstrip excitation through a novel bow-tie-shaped cross-slots in the ground plane. Extensive simulation parametric studies resulted in a 3dB axial ratio (AR) bandwidth of 17.24 at a center frequency of 13GHz, where the dielectric resonator is excited in its HEM11 resonant mode. A prototype DRA was fabricated with some limitations and experimentally verified for the impedance matching and radiation patterns showing circular polarization. Copyright 2012 Joshua M. Patin and Satish K. Sharma. Copyright © 2012 J. M. Patin and S. K. Sharma.