Wavefront Control of Millimeter Waves With a VO2-Based Reconfigurable Meta-Reflectarray

Year: 2023

Authors: Shameli MA., Capobianco AD., Schenato L., Santagiustina M., De Ceglia D.

Autors Affiliation: Univ Padua, Dept Informat Engn, I-35131 Padua, Italy; Univ Brescia, Dept Informat Engn, I-25123 Brescia, Italy; Natl Interuniv Consortium Telecommun CNIT, I-43124 Parma, Italy; Natl Inst Opt, Natl Res Council, I-25123 Brescia, Italy.

Abstract: In this paper, a novel architecture of a reconfigurable metasurface is proposed and numerically assessed for wavefront control in wireless systems working in the millimeter-wave range. We show that a metasurface made of engineered silicon bricks covered with a thin film of vanadium dioxide provides anomalous reflection with an efficiency of 93% at 60 GHz and a relative bandwidth of 15%. After applying a thermal stimulus that triggers the transition of vanadium dioxide from the insulator phase to the metallic phase, the metasurface abruptly changes its response and provides specular reflection. The device shows high efficiency and broadband operation in both VO2 states, allowing dynamic control of millimeter waves. Therefore, it finds applications in imaging, sensing, and intelligent wireless communications in 5G and 6G systems, especially for beam-shaping and beam-steering. Moreover, the proposed reconfigurable metasurface has a simple configuration that lends itself to standard fabrication tools, and it has a subwavelength size for integrated and compact communication systems.

Journal/Review: IEEE Access

Volume: 11      Pages from: 56509  to: 56515

More Information: This work was partially supported by the European Union under the Italian National Recovery and Resilience Plan (NRRP) of NextGenerationEU, partnership on Telecommunications of the Future(PE0000001 -program RESearch and innovation on future Telecommunications systems and networks, to make Italy more smART (RESTART)), by University of Padova (SEED-BIRD2020) and by the Ministero dell’Istruzione, dell’Universita e della Ricerca [Italian Ministry for Education, Universities and Research (MIUR)] (PRIN 2017HP5KH7_003 -FIRST).
KeyWords: INDEX TERMS Millimeter waves; reconfigurable structures; reflective metasurface; controlling phase front; phase-transition materials
DOI: 10.1109/ACCESS.2023.3282163

Citations: 4
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here