2021/07/05 by Vladislav Popov, Popov, Vladislav, Mikhaïl Odit +13 · 2 citations
Engineering · #Advanced Antenna and Metasurface Technologies #Advanced Wireless Communication Technologies #Antenna Design and Analysis #Applied Physics (physics.app-ph) #FOS: Physical sciences
paper · pdf · doi:10.48550/arxiv.2107.02087
openalex publication_date 2021/07/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
As data rates demands are exploding, 5G will soon rely on mmWaves that offer\nmuch higher bandwidths. Yet at these frequencies, attenuation and diffraction\nof waves require point to point communications with beamforming base stations\nthat are complex and power greedy. Furthermore, since any obstacle at these\nfrequencies completely blocks the waves, the networks must be extremely dense,\nresulting in dramatic increase of its cost. One way to avoid this problem is to\nredirect beams coming from base stations at many locations with Reconfigurable\nIntelligent Surfaces, in order to increase their coverage even in cluttered\nenvironments. Here we describe and experimentally demonstrate a binary tunable\nmetasurface operating at 28~GHz, based on standard PCB and off the shelves PIN\ndiodes. We show that it can be used as a Reconfigurable Intelligent Surface\nthat beamforms an incoming plane wave at a given angle to one or several\noutgoing plane waves at angles reconfigurable in real time. Most importantly we\nuse this 20~cm\×20~cm reconfigurable Intelligent Surface alongside\nsoftware defined radio and up/down converters at 28~GHz, and demonstrate a\nwireless link between an emitter and a receiver 10~meters away, in a non line\nof sight configuration, hence proving the validity of the approach.\n