For the upcoming 6G wireless networks, reconfigurable intelligent surfaces are an essential technology, enabling dynamic beamforming and signal manipulation in both reflective and transmissive modes. It is expected to utilize frequency bands in the millimeter-wave and THz, which presents unique opportunities but also significant challenges. The selection of switching technologies that can support high-frequency operation with minimal loss and high efficiency is particularly complex. In this work, we demonstrate the potential of advanced components such as Schottky diodes, memristor switches, liquid metal-based switches, phase change materials, and RF-SOI technology in RIS designs as an alternative to overcome limitations inherent in traditional technologies in D-band (110-170 GHz).
@article{arxiv.2504.20175,
title = {Evaluation of Switching Technologies for Reflective and Transmissive RISs at Sub-THz Frequencies},
author = {Sofia I. Inácio and Yihan Ma and Qi Luo and Luca Lucci and Awanish Kumar and José Luis Gonzalez Jimenez and Bruno Reig and Alexandre Siligaris and Denis Mercier and Jonas Deuermeier and Asal Kiazadeh and Verónica Lain-Rubio and Oleg Cojocari and Tung D. Phan and Ping Jack Soh and Sérgio Matos and George C. Alexandropoulos and Luís M. Pessoa and Antonio Clemente},
journal= {arXiv preprint arXiv:2504.20175},
year = {2025}
}
Comments
6 pages, 12 figures, to be presented in EuCNC & 6G Summit 2025