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Conception d'antennes miniatures, multi-bandes et à polarisation circulaire à base de matériaux ferrites polarisés

Abstract : The rapid growth of wireless communication systems over several past decades has increased the need for more efficient microwave devices. Antennas are a fundamental part of the development and the improvement of these systems performances. The application diversity requires that these devices meet many communication standards, therefore multi-band character is highly demanded. Furthermore, in order to ensure a good link quality between transmitter and receiver, the criterion of circularly polarized radiation is often requested. The miniature character of these antennas is also essential to facilitate their integration and reduce the systems bulkiness. Developing antennas combining these three criteria: miniaturization, circular polarization and multi-band operation, is a real challenge. The main objective of this thesis is to take advantage of the magnetic characteristics of ferrite materials, under the influence of a static magnetic field, in order to implement antennas combining these three criteria. The adopted strategy is to establish a complete methodology to study the electromagnetic response of a ferrite antenna regarding the characteristics of these materials. This approach is based on a modal analysis followed by numerical modelling and experimental validation. The different constraints encountered during this work are discussed and appropriate solutions are proposed.
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Submitted on : Wednesday, January 19, 2022 - 2:48:08 PM
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  • HAL Id : tel-03534521, version 1

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Sarra Jemmeli. Conception d'antennes miniatures, multi-bandes et à polarisation circulaire à base de matériaux ferrites polarisés. Electronique. Université de Limoges, 2021. Français. ⟨NNT : 2021LIMO0077⟩. ⟨tel-03534521⟩

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