Investigations on Various Designs of Dielectric Resonator Antennas (DRA) for C Band Applications

Abstract

The overall growth of wireless communication is going on at such a rapid pace that a lot has been going on day to day basis leading to a number of changes in antenna designs to make their performance as per the required parameters. In this communication, various dielectric resonator antenna designs and their performance parameters like size, shape, feeding mechanism, bandwidth, substrate material and peak gain are discussed in the C band. DRA antenna has emerged as a good option in the microwave and millimeter frequency range due to the use of low loss dielectric material which reduces surface wave losses and metallic losses and in turn increases antenna efficiency. DRA due to its advantages like small size, wider bandwidth, much better efficiency, higher dielectric strength, low profile, higher power handling capacity, easy fabrication and low cost is widely used antenna.