Inverse design of sub-wavelength metadeflectors for an ultra-flat antenna system in Ka-Band
- Others:
- Modélisation et méthodes numériques pour le calcul d'interactions onde-matière nanostructurée (ATLANTIS) ; Inria Sophia Antipolis - Méditerranée (CRISAM) ; Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (LJAD) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA)
- Thales Research and Technology [Palaiseau] ; THALES [France]
- RAPID AEROCOM project No. 2022 29 0954
Description
inverse design methodology is developed to optimize a sub-wavelength metadeflector structure used on an ultra-flat antenna system in Ka-band. The strategy adopted combines two ingredients : a high order HDGFD (Hybrid Discontinuous Galerkin Frequency-Domain) solver of the frequency-domain Maxwell equations coupled to a Floquet modes decomposition for the numerical characterization of the infinite periodic Macro-cell design of the deflector and the EGO algorithm for the optimization of the geometrical characteristics of constituting dielectric pillars. The deflector was specifically designed for Ka-band operation, achieving a 30°deflection at 29GHz, which enables a maximum scan angle of 66°by employing two deflectors using the Risley scanning concept.
Abstract
International audience
Additional details
- URL
- https://hal.science/hal-04850084
- URN
- urn:oai:HAL:hal-04850084v1
- Origin repository
- UNICA