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Contribution à l'étude d'antennes discrètes pour porteurs métalliques. Application à l'automobile du concept "Car-antenna"

Abstract : The presented work in this PhD Thesis is a contribution done in wide band antenna especially in the automotive domain. The main goal is to propose efficient and discrete antennas. So, a study is done on the existent antennas in this domain. This permits us to reorient our work to the new concept of "carantenna". It consists to use the metallic structure of a vehicle as a radiated element. At first, the principle is tested on simple structures like parallelepiped or a simplified representation of a vehicle with a size scaled ½ before applying it on the real vehicle like the Citroën C2 on the FM band. The impedances and the radiated diagrams calculated and measured show that a reasonable amplification of the car-antenna can permit to approach the referent whip antenna. We denote too the radiated diagram is oriented by the localization of the exciter. In the last part, this property is exploited to do a diversity of diagram. The calculation and the measurements let us see that with this method, the amplifier gain can be considerably decreased.
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Submitted on : Wednesday, February 9, 2011 - 2:36:46 PM
Last modification on : Thursday, January 7, 2021 - 4:33:09 PM
Long-term archiving on: : Thursday, March 30, 2017 - 6:48:19 AM

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  • HAL Id : tel-00564618, version 1

Citation

Demba Niang. Contribution à l'étude d'antennes discrètes pour porteurs métalliques. Application à l'automobile du concept "Car-antenna". Traitement du signal et de l'image [eess.SP]. Université Rennes 1, 2010. Français. ⟨tel-00564618⟩

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