Contribution à la conception d'antennes ultra large bande impulsionnelles d'encombrement réduit

Houda Nadir 1
1 XLIM-SRF - Systèmes RF
XLIM - XLIM : SRF
Abstract : This thesis presents the design of small form factor Ultra Wide Band antennas with progressive waves shape, which is dedicated to ultra-short pulses radiation in a frequency band ranging from 300MHz to 3GHz. The aim is to combine a wide band of radiated frequencies and good performance while limiting the size of antennas. The insertion of a dielectric material has been associated with the design of Ultra Wide Band antennas to reduce their dimensions. This has led to the synthesis and characterization of innovative dielectric materials based on geopolymers, whose mastering of the value of the permittivity is possible. An antenna prototype has been manufactured and measurements of the different radiation characteristics were made and compared to the simulation results to ensure its good functioning. This antenna has also been associated with radar applications for the detection of targets in different environments (air and soil). The impulse responses obtained for the different tested radar scenes have been compared with the results obtained with other known antennas.
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Theses
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Houda Nadir. Contribution à la conception d'antennes ultra large bande impulsionnelles d'encombrement réduit. Electronique. Université de Limoges, 2018. Français. ⟨NNT : 2018LIMO0062⟩. ⟨tel-01935924⟩

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