A Comprehensive Review on Dielectric Resonator Antennas (DRA)

Abstract

In an application-oriented approach, this survey paper describes a systematic investigation of research carried out on dielectric resonator antennas (DRAs) in the last three and half decades. For their adept features such as high performance, low loss, large bandwidth, compact size, 3-dimensional modelling versatility etc. DRAs have established a remarkable role in antenna engineering. In this article, the use of DRAs for various commercial and defence applications linked to wireless communication is highlighted.All the application-oriented DRAs available in the open literature are grouped into five different categories, such as microwave bands, basic frequency, technology, millimetre-wave, and various forms, to make a smooth and efficient survey post.This paper also addresses the comparative study of various dielectric resonator antenna design approaches used by researchers.