Design And Development Of Cylindrical Dielectric Resonator Antenna Cdra Array For Wireless Communications

Abstract

In recent decades, broadband and multi-band high-frequency communication newlinesystems have developed enormously. In addition to other essential newlinerequirements, a compact size, high-performance antenna with low conductor newlineloss is required to enable a high-speed communication system. Dielectric newlineResonance Antenna (DRA) has been recognized as a lightweight antenna that newlineoffers wide and multi-band functionality with low dissipation loss comparison newlinewith simple microstrip patch antennas. Additionally, by implementing array newlinearchitecture in DRA, antenna performance parameter such as gain, impedance newlinebandwidth, and radiation patterns can be improved. newlineThis research propose DRA Array having cylindrical and hexagonal shapes newlineDielectric Resonator (DR). To receive optimum antenna performance, various newlinepower divider techniques such as microstrip power dividers, quarter wavelength newlinetransformer power dividers, and unequal power dividers are utilized. The first newlinephase of research includes the properties of various dielectric resonators. The newlinenext phase of research includes literature survey of existing DR antenna and newlineDRA Array. The systematic approach has been followed to fix the DR material, newlinesubstrate material and feeding techniques. newlineIn the first design a new tri-band CDRA array has been proposed using a newlinemicrostrip power divider network that works at 2.4 GHz, 4.1 GHz, and 5.4 GHz newlinefrequencies, which has potential to cover WiFi, wireless LAN, and satellite newlineapplications bands. The designed antenna array obtains wide bandwidth of newline1.14 GHz (40%) and gain of 9 dBi. The second geometry includes an innovative newlinequarter wavelength transformer with a power divider network. By utilizing the newlineaforesaid geometry, tri-band response has been achieved for various frequency newlineranges from 0.87 GHz to 1.04 GHz with 18% bandwidth, 2.37 GHz to 2.78 GHz newlinewith 17% bandwidth and 4.17 GHz to 5.21 GHz with 22% bandwidth, having newlinepeak gain of 2.43dBi, 7.72dBi, and 8.39dBi respectively. The effective antenna newlinevolume is 113.0 X 96.0 X 1.6 mm3. The propose