mmWave MIMO with beam-forming (at base stations) to play a critical role toward 6G RIS critical for the urban environment: individual phase control In-band full-duplex is an enabling technology that will play a key role in building 6G UWB antennas with different antenna designs, coupled with broadband feeding networks Embedded filters, power dividers, isolation via arrays and solid copper surfaces, impedancematched interconnects: advanced design rules are needed Tunable FSS for attaining selective isolation and beamsteering effects.
