▎ 摘　　要

NOVELTY - The super-surface has a first medium substrate (1) whose upper surface is printed with a square graphene patch (11). A lower surface of a second medium substrate (2) is printed on a square vanadium dioxide shaped patch (21) when the square graphene patches and a group of square annular metal patches (31) are set in an insulating state. A Fermi level of the square graphene patch is adjusted to realize a dual-frequency line-line polarization conversion function and a wide-line polarized conversion function between switching. The polarization conversion super-surface is reconstructed into a wave-absorbing super-surface when the state of a square-vanadium dioxide annular patch (12) and the square-vanadium dioxide shaped patch are changed from an insulation state to a metal state. The square graphene patch and multiple square-vanadium dioxide patches are resonated together to generate a wave absorption effect. USE - Broadband and multi-frequency switchable wave-absorbing and polarization conversion reconfigurable super-surface used in terahertz communication field. ADVANTAGE - The super-surface realizes broadband and multi-frequency switching of working bandwidth and reconstruction of wave-absorbing and polarization conversion. The unit can realize double-frequency line-line polarization conversion function and wide line line-polarization conversion function between switching when a state of the square vanadium dioxide annular patch and the square graphene patch and a group of square ring-shaped metal patch of diagonal gap resonance is changed from insulating state to metal state. DESCRIPTION OF DRAWING(S) - The drawing shows an exploded view of a broadband and multi-frequency switchable wave-absorbing and polarization conversion reconfigurable super-surface. 1First medium substrate 2Second medium substrate 3Third medium substrate 4Fourth medium substrate 11Square graphene patch 12Square vanadium dioxide annular patch 21Square vanadium dioxide shaped patch 31Square annular metal patch 41Square metal bottom plate