Over 70 Gb/s data transmission rate with 300-GHz-band transmission-type beamforming metasurface for beyond-5G wireless communication

This study presents multilayer beamforming metasurface devices at 300-GHz-band with continuous $2 \pi$ phase designability. The fabricated devices showed beam steering angles between 18° and 38°. The first-ever wireless data transmission with beam steering at 300 GHz using metasurfaces is demonstrated, achieving over $72 \mathrm{~Gb} / \mathrm{s}$ data rate over a $25-\mathrm{cm}$ link distance in 16QAM modulation.