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Synthèse analytique de panneaux réflecteurs imprimés : Utilisation de circuits équivalents et de techniques de synthèse de filtres

Abstract : Reflectarrays antennas are a promising alternative to reflector antennas in order to produce focused and contoured beams especially for aeronautics and space applications. A reflectarray antenna is made up of ah array of unit cell that provide a pre-adjusted phasing to form the desired beam.The synthesis of a reflectarray consists in fixing the geometrical dimensions of each unit cell to generate the desired phase law. This thesis focuses on the synthesis of reflectarray. The current methods are mostly based on full­wave analysis and so they are time consuming.The purpose of this thesis is to answer at the following question: a reflectarray can be fully analytically synthesized? We answer it by using the multimodal method. The unit cell is then represented by an equivalent circuit. Using its remarkable properties, the reflected phase can be analytically predicted according to the geometrical dimensions of the unit cell. We used it firstly to synthesize a reflector where the unit cell is composed or a metallic strip. This study has validated this method in order to synthesize reflectarray, Then three reflectarrays have been synthesized based on three specifications. Finally, the multimodal method is promising but the precision has to be improving in order to fully synthesize a reflectarray.
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https://theses.hal.science/tel-01867188
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Submitted on : Tuesday, September 4, 2018 - 10:09:07 AM
Last modification on : Wednesday, April 27, 2022 - 4:01:55 AM
Long-term archiving on: : Wednesday, December 5, 2018 - 1:37:51 PM

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  • HAL Id : tel-01867188, version 1

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Alexandre Grossetete. Synthèse analytique de panneaux réflecteurs imprimés : Utilisation de circuits équivalents et de techniques de synthèse de filtres. Electronique. INSA de Rennes, 2018. Français. ⟨NNT : 2018ISAR0008⟩. ⟨tel-01867188⟩

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