An Integrated Substrate Gap Waveguide Filter Metalens Antenna for 6G THz Band

Terahertz (THz) technology has become one of the key technologies of future wireless communications. In this paper, combining Through-Silicon Via (TSV) with Integrated Substrate Gap Wave-guide (ISGW), a terahertz filter metalens antenna suitable for 6G wireless communication is proposed. Based on TSV based ISGW that is capable of suppressing surface waves and reducing antenna losses, ultra-wideband filtering function is formed by circular ring resonators with different impedance branches, broadband radiation characteristics are obtained by interdigital slots, and Huygens meta-surface lens is used to improve antenna gain. A 46.1% relative bandwidth in 142-227 GHz and more than 14 dBi gain are achieved with a small footprint. This antenna is suitable for 6G THz communications.