Bandwidth Enhancement of Rectangular Dielectric Resonator Antenna with and Without a Parasitic Patch

Abstract

This literature investigates the model of wideband Circularly Polarized (CP) Rectangular Dielectric Resonator Antenna (RDRA) which has been energized through a novel shaped feed (Roman Three) and results have been enhanced by introducing the parasitic patch. The novel feed has been comprised of five metallic strips, which have been optimized to generate two orthogonal modes to produce a CP. The suggested RDRA produced CP over a bandwidth of ~ 8.50% in conjunction with impedance Bandwidths (ǀS11ǀ < -10 dB) of ~ 8.95% after introducing the parasitic patch the impedance bandwidth-enhanced to ~11.25% and axial ratio jumps to ~11% All other parameters i.e. Gain and beam width are compared with and without a parasitic patch, it has been found that through parasitic patch mostly all parameters enhanced significantly. The proposed design has been simulated in computer simulation technology (CST) software by using the transient solver which is based on the finite integration technique (FIT)