Reconfigurable and Broadband Analog Computing With Terahertz Metasurface Based on Electrical Tuning of Vanadium-Dioxide Resonators

Year: 2024

Authors: Shameli M.A., Magarotto M., Capobianco A.D., Schenato L., Santagiustina M., Vincenti M.A., De Ceglia D.

Autors Affiliation: KN Toosi Univ Technol, Fac Elect Engn, Tehran 1541849611, Iran; Univ Padua, Dept Informat Engn, I-35131 Padua, Italy; CNIT, Natl Interuniv Consortium Telecommun, I-43124 Parma, Italy; Univ Brescia, Dept Informat Engn, I-25123 Brescia, Italy; CNR, Natl Inst Opt, I-25123 Brescia, Italy.

Abstract: A architecture of reconfigurable analog computing devices is proposed for image processing and advanced wireless communication systems, such as those required for self-driving cars. This architecture is designed to work in the terahertz frequency range, and it is based on a metasurface made of VO2 brick resonators as metaatoms. The system is capable of performing first-order and second-order derivative, or it may act as a mirror for impinging signals in a broad range of terahertz frequencies. The reconfigurability between these functions is achieved by tuning the temperature of the VO2 resonators, which can be switched between the metallic and the insulator state with an electric current passed through a back metal layer. Following this approach, we present two dynamically controlled metasurfaces, one designed in k-space and the other in real-space.

Journal/Review: IEEE Access

Volume: 12      Pages from: 170478  to: 170486

More Information: This work was supported in part by the Ministero dell’Istruzione e del Merito (MIUR) through the project Progetti di Rilevante Interesse Nazionale (PRIN) 2022 PILLARS;in part by the European Union under the Italian National Recovery and Resilience Plan (NRRP) Mission 4, Component 2, Investment 1.3, partnership on Telecommunicatio ns of the Future[program RESearch and innovation on future Telecommunications systems and networks, to make Italy more smART (RESTART)] under Grant CUP C93C22005250001 and Grant PE00000001; and in part by the Italian Ministry of University and Research (MUR) through eFficient pLasmA Intelligent Reflecting Surface (FLAIRS) under Grant PRIN 2022 PNRR P2022RFF9K.
KeyWords: Wireless communication; Resonant frequency; Computer architecture; Switches; Metasurfaces; Insulators; Broadband communication; Mirrors; Resonators; Tuning; Analog computing; reconfigurable devices; vanadium dioxide; first and second-order derivative; nonlocal metasurface; wide bandwidth
DOI: 10.1109/ACCESS.2024.3497664