Contribution à la conception d'antennes composées de structures CRLH (Composite Right Left-Handed)

Abstract : Metamaterials are artificial structures with unusual electromagnetic properties. Composite Right-Left Handed (CRLH) radiating structures are very attractive antennas because of their scanning capability and wideband performances. However crlh lines must contain a large number of cells in order to have sufficient radiation efficiency. Due to the recurring request of having small antennas in new communication systems, new designs based on crlh structures must be found. The first objective of this thesis is to have full knowledge of electromagnetic properties of crlh structures. To take advantages of atypical electromagnetic behavior of CRLH structures, new CRLH based antennas designs are proposed. These new inspired antennas could produce different radiation patterns (with large beamwidth, narrow beam, double polarization). Analytical model, previously validated by electromagnetic simulator, is used to characterize the new proposed antennas.
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Aïta Thior. Contribution à la conception d'antennes composées de structures CRLH (Composite Right Left-Handed). Sciences de l'information et de la communication. Télécom ParisTech, 2012. Français. ⟨NNT : 2012ENST0059⟩. ⟨tel-01130347⟩

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