A REVIEW PAPER ON PERFORMANCE IMPROVEMENT OF DIELECTRIC RESONATOR ANTENNAS (DRA)

Abstract

This review paper outlines a compressive analysis of research performed in the domain of dielectric resonator antenna (DRA) targeting gain, circular polarisation (CP) and mutual coupling reduction. Due to its adept features, namely wide bandwidth, high performance parameters, lower losses, and mainly 3Dimensional-design versatility, that is rarely available in traditional antennas, the DRAs has already produced a distinct role in the antenna engineering sector. In this situation, the research that has been done during the last two decades on gain, circular polarisation, and mutual coupling is very much essential. The main objective of this review paper is to describe an overview on multiple methods adopted in the context of reducing gain, circular polarization (CP), and mutual coupling. Another objective is to give a compressive review of remarkable research performed to address these diverse characteristics; and at last to determine the concentration of the research gap for the promotion of the same.