Ultra wideband stacked rectangular dielectric resonator antenna.

Bizan, Mohamed Sedigh (2018). Ultra wideband stacked rectangular dielectric resonator antenna. Mémoire. Québec, Université du Québec, Institut national de la recherche scientifique, Maîtrise en télécommunications, 95 p.

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Résumé

This thesis is a presentation of a design and fabrication of ultra-wideband stacked rectangular dielectric resonator antenna (UWB-RDRA), where the effect of position perturbations on the bandwidth of an aperture coupled dielectric resonator antenna (DRA) is studied. The proposed antenna takes advantage of two low-Q modes which have overlapping bandwidths so as to achieve an ultra-wideband operation. This can be achieved by using two combinations of stacked DRAs for the analysis: larger over smaller (LOS), and smaller over larger (SOL). Different position perturbations on the transmission line (TL), LOS, and SOL are applied to widen the matching bandwidth of the antenna. The performance of the proposed antenna is compared with the conventional antenna designed with no perturbations. The proposed antenna not only provides 5:1 ultra-wide matching bandwidth (from 2.7 GHz to 13.6 GHz), but also results in the highest gain of 9 dBi, which is 2 dBi more than the antenna designed with conventional method with no perturbation. The proposed antenna, therefore, consists of the dielectric constant of 6.15 and 9.8 that are stacked vertically in order to acquire a bandwidth that is more improved as compared to the conventional RDRA. A use of 50 Ω microstrip line is required in the proposed antenna to act as a feeding mechanism. The physical parameters of stacked RDRA are also optimized by extensive simulations using Computer Simulation Technology (CST) software. The parameters of this antenna are 65x50x5 mm³ and its grounded substrate size is 108x90 mm². The prototype is fabricated and measured. The measured results and simulated results show a good agreement. This prototype antenna is designed to cover the band from 2.7 GHz to 13.6 GHz. This proposed antenna is therefore suitable for wireless (Wi-MAX) and (WLAN) application bands.

Type de document:	Thèse Mémoire
Directeur de mémoire/thèse:	Denidni, Tayeb A.
Mots-clés libres:	Télécommunications
Centre:	Centre Énergie Matériaux Télécommunications
Date de dépôt:	09 avr. 2019 21:14
Dernière modification:	09 avr. 2019 21:14
URI:	https://espace.inrs.ca/id/eprint/8004

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