Title :
Design of a single circular soft surface applied to an aperture fed Dielectric Resonator antenna for gain and bandwidth improvement
Author :
Coulibaly, Y. ; Nedil, M. ; Denidni, T. ; Talbi, L.
Author_Institution :
Abitibi-Temiscamingue & Underground Commun. Res. Lab. (LRTCS), Univ. de Quebec, Val-d´´Or, QC, Canada
Abstract :
In this paper, a novel design of a new broadband and high gain hybrid antenna is presented. The proposed antenna structure consists of a Dielectric Resonator (DR), an intermediate substrate a microstrip fed slot, and a circular soft surface. With the integration of these different elements, a wide bandwidth response and a high gain are achieved. The cylindrical soft structure is composed of a single metallic strip that is shorted to the ground through two sets of periodic vias. CST Microwave Studio software package is used to investigate the antenna. The input impedance, the gain, and the far field patterns have been analyzed. Furthermore, the proposed antenna is compared to another one which has three rings ant three sets of vias. It is accessed that the electromagnetic characteristics of a dielectric resonator antenna (DRA) can be improved by adding an intermediate substrate and a circular soft surface. The gain can be enhanced to near 6 dBi.
Keywords :
antenna feeds; antenna radiation patterns; aperture antennas; broadband antennas; dielectric resonator antennas; CST Microwave Studio software package; DRA; aperture-fed dielectric resonator antenna; bandwidth improvement; broadband antenna; electromagnetic characteristics; far field patterns; gain improvement; high-gain hybrid antenna; intermediate substrate; metallic strip; microstrip fed slot; single-circular soft surface; Antenna radiation patterns; Bandwidth; Dielectric resonator antennas; Dielectrics; Substrates; Surface impedance; Dielectric Soft Surface; Dielectric resonator Antenna; Gain enhancement; Hybrid structure;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996631