Metal-only Reflecting Luneburg Lens Design for Sub-THz Applications
| Autor: | Enrica Martini, Ronan Sauleau, C. Bilitos, David Gonzalez-Ovejero, S. Maci, Jorge Ruiz-Garcia |
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| Přispěvatelé: | Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), European Regional Development Fund, Ministry of Higher Education |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | 2021 International Symposium on Antennas and Propagation (ISAP) 2021 International Symposium on Antennas and Propagation (ISAP), Oct 2021, Taipei, France. pp.1-2, ⟨10.23919/ISAP47258.2021.9614591⟩ |
| Popis: | International audience; This paper presents a metasurface (MTS) beamformer based on Reflecting Luneburg Lenses (RLLs) operating in the sub-THz range. RLLs consist of two circular parallel plate waveguides (PPWs) vertically stacked. The bottom wall of the lower PPW is loaded with a MTS with an axially symmetric modulation. The wave launched by a primary feed in the bottom PPW is collimated in the top one, so that a plane wave is identically generated for any azimuthal position of the source. The proposed solution uses a bed of nails, wellsuited to fabrication by Si micromachining, to implement the RLL refractive index profile. Simulation results yield a 30%-3dB directivity bandwidth around the center frequency (280 GHz). This device can be used as a beam-former for multi-beam antennas for Earth observation or for front-and back-hauling in beyond 5G wireless. |
| Databáze: | OpenAIRE |
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