Etude et conception de nouvelles topologies d’antennes à résonateur diélectrique dans les bandes UHF et SHF

Abstract : This thesis proposes the study and design of new topologies of dielectrics resonators antennas in the UHF and SHF bands. The first part is devoted to the state of the art and to the fundamental characteristics of these antennas. The second part is focused on the design of new types of antennas from the canonical shapes in order to expand their bandwidth for multi-standard applications without changing the distribution of their radiation pattern in free space. Then our interest is focused on the realization of multiband antennas. The first structure is based on the excitation of two modes of a rectangular dielectric resonator antenna, at two different frequencies. The second one is a dielectric resonator antenna (DRAs) with two concentric resonators with different permittivities. They are excited each one on its fundamental mode to obtain a bi-band behavior. In the last part of the study, we are interested in the design of miniature DRAs for UHF RFID applications. We use in this case, materials with high permittivity and we place a layer of metamaterial over the resonator to improve the gain.
Liste complète des métadonnées

Cited literature [33 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/tel-01104850
Contributor : Sandrine Charlier <>
Submitted on : Monday, January 19, 2015 - 12:31:08 PM
Last modification on : Wednesday, December 19, 2018 - 3:26:05 PM
Document(s) archivé(s) le : Friday, September 11, 2015 - 7:09:53 AM

Licence


Public Domain

Identifiers

  • HAL Id : tel-01104850, version 1

Citation

Hedi Ragad. Etude et conception de nouvelles topologies d’antennes à résonateur diélectrique dans les bandes UHF et SHF . Sciences de l'ingénieur [physics]. UNIVERSITE DE NANTES; UNIVERSITE DE TUNIS EL MANAR, Tunisie, 2013. Français. ⟨tel-01104850⟩

Share

Metrics

Record views

958

Files downloads

8929