▎ 摘　　要

NOVELTY - Reconfigurable ultra-widebandultra-surface unit has a first medium substrate (1) with a graphene patch (6) printed on an upper surface, a first vanadium dioxide annular patch printed on a lower surface, a second medium substrate (2) with a second vanadium dioxide annular patch printed on lower surface, a third medium substrate (3) with a third vanadium dioxide annular patch printed on lower surface and a fourth medium substrate (4) with a fourth vanadium dioxide annular patch printed on lower surface. An I-shaped graphene patch in the intersecting graphene patch forms a high frequency band polarization conversion resonance and a strip graphene patch forms a low frequency band line-circular polarization conversion resonance. A large-sized resonant ring adjusts the low-frequency absorbing resonance point, and a small-sized resonant ring adjusts the high-level wave-absorbing resonance point to realize the ultra-widebandwave-absorbing characteristics of the ultra-surface. USE - Reconfigurable ultra-wideband ultra-surface unit with dual functions of wave absorption and polarization conversion for terahertz wave absorption and terahertz communication. ADVANTAGE - The reconfigurable ultra-wideband ultra-surface unit solves the technical problem of narrow bandwidth in existing technology, utilizes the large-sized resonant ring to adjust the low-frequency absorbing resonance point, and utilizes the small-sized resonant ring to adjust the high-level wave-absorbing resonance point to realize the ultra-wideband wave-absorbing characteristics of the ultra-surface, forms the high frequency section line-circular polarization conversion resonance by the transverse I-shaped graphene patch in the mutually crossed graphene patch, thus realizing the ultra-wideband strip line circular polarization conversion characteristics through the four vanadium dioxide annular patches laminated with each other. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the reconfigurable ultra-wideband ultra-surface unit with dual functions of wave absorption and polarization conversion for terahertz wave absorption and terahertz communication. 1First medium substrate 2Second medium substrate 3Third medium substrate 4Fourth medium substrate 6Graphene patch