Design and direct optimization of spatially fed metasurfaces: software defined highly shaped coverage Reflectarray antenna - Université de Rennes Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Design and direct optimization of spatially fed metasurfaces: software defined highly shaped coverage Reflectarray antenna

Résumé

As a result of a decade-long collaboration between Thales Alenia Space and IETR (Institut d'Electronique et des Technologies du numéRique) through their joint laboratory, Merlin, a versatile tool for designing and optimizing spatially fed metasurfaces has been developed. This tool, known as DOMES (Direct Optimization of MEtaSurface), is a multi-modular system that integrates modified physical optics and periodic surface analysis tools from Thales Alenia Space, along with advancements in unit cell design and optimization from various research projects conducted within the Merlin framework. DOMES employs a general methodology to enhance the efficiency of direct optimization for radiated co-polarization and cross-polarization in large aperture antennas composed of quasiperiodic reflective surfaces (QPRS). It achieves this by ensuring layout continuity without abrupt geometrical variations. This is accomplished through the utilization of the properties of Phoenix cells (PC), efficient parametrization and interpolation of PC databases, and the description of QPRS using continuous B-spline functions. This approach reduces the dimensions of the largescale optimization problem and naturally ensures smoothness in the layout. The purpose of this work is to illustrate the general principles of the design and optimization tool, with a focus on two applications involving highly shaped coverage for large deployable Reflectarray (RA) antennas. Each of these use cases involves a problem at a large to very-large electrical size scale. The performance of the RA antennas is compared to equivalent theoretically shaped reflectors, demonstrating that RAs can be highly competitive or even superior in terms of performance.
Fichier principal
Vignette du fichier
Design and direct optimization of spatially fed metasurfaces software defined highly shaped coverage Reflectarray antenna last.pdf (4.97 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04249580 , version 1 (19-10-2023)

Identifiants

  • HAL Id : hal-04249580 , version 1

Citer

Andrea Guarriello, Daniele Bresciani, Renaud Loison, Hervé Legay. Design and direct optimization of spatially fed metasurfaces: software defined highly shaped coverage Reflectarray antenna. 41st ESA Antenna Workshop on Large Deployable Antennas, European Space Agency, Sep 2023, Noordwijk, Netherlands. pp.1-9. ⟨hal-04249580⟩
31 Consultations
46 Téléchargements

Partager

Gmail Facebook X LinkedIn More