Design and analysis of dielectric resonator antenna

Abstract

Present scenario of communication, all wired ones becoming as wireless. So, to achieve efficient and affordable communication in wireless technology, compact and efficient radiators required. One of the efficient radiators is dielectric resonator antenna (DRA). Almost all the applied power will be lost in the radiated fields only, with this attractive feature DRAs become much popular in wireless communication field at microwave frequencies. In this project, new type of DRAs designed for popular wireless applications like Wireless Interoperability Microwave Access (WIMAX), Wireless Local Area Network (WLAN) and Wireless Fidelity (Wi-Fi). This project covers the design of DRA which including all parametric studies of the return loss, radiation patterns, gain and directivity for specific wireless application. Due to this flexibility in DRAs, they can be designed with different shapes as per coverage requirements depending upon the applications in the wireless communication industries. Here, all the designed DRAs are excited by using Co-planar waveguide (CPW) feeding technique, having advantageous features (less radiation leakage, operating at extremely high frequencies). Among four designed DRAs, first two DRAs having single Dielectric Resonator (DR) element and radiating at 2.4 GHz and 5.8 GHz and rest of two designs having stacked method. Here, the concept of stacking is used to get the multiple resonant frequencies and wide bandwidths. The first stacked DRA is covering the resonant frequencies at 5.20GHz, 5.84GHz which covers WLAN bands and second stacked DRA resonating at 3.5GHz and 5.5GHz, which covers Wi-MAX and WLAN bands respectively. This project work concludes that, the designed DRAs efficiently radiates at IEEE 802.11a/b/g and IEEE-802.16 bands.