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Développements de nouvelles architectures d’antennes reconfigurables pour les applications de télécommunications de 5ème génération

Abstract : The fast development of wireless communication led to an increasing demand for new developments on antennas. These developments were backed by an urgent need for more complex architectures due to the need of reconfigurability in terms of frequency, reliability, radiation pattern and power consumption. In order to cover those needs, this work is based on an original reconfigurable antenna with a simplified feed network developed by XLIM laboratory, to offer an attractive tradeoff in terms of performances, complexity and cost. This new architecture is based on previous works from the laboratory (2012-2015) and a first proof of concept working at 2.45 GHz. The work proposed for this PhD is based on the development of this new architecture to manage the problems of periodic antenna arrays. Two main axes were developed during this work. The first axis consists to demonstrate the interest of this concept to manage the active VSWR of each excited element using loads connected to the parasitic elements, avoiding the need for circulators, while reducing the complexity of feed network. The second part of our work is dedicated to illustrating the potentialities of these antennas to reduce the grating lobes, while defining a constraint on the level of sidelobes. A manufactured prototype is presented in order to experimentally validate the potentialities of these antennas.
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Submitted on : Monday, August 31, 2020 - 11:47:10 AM
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  • HAL Id : tel-02926011, version 1

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Hala Alzein. Développements de nouvelles architectures d’antennes reconfigurables pour les applications de télécommunications de 5ème génération. Electronique. Université de Limoges, 2020. Français. ⟨NNT : 2020LIMO0014⟩. ⟨tel-02926011⟩

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