A wideband frequency reconfigurable FSS radome

The invention discloses a wideband frequency reconfigurable FSS radome, belonging to the technical field of electromagnetic wave control. A FSS ultra-thin unit is compactly combined as a unit, and that FSS ultra-thin unit is periodically arranged as M*N; FSS ultra-thin element comprise a special-shaped resonant square ring, a fractal square patch and a dielectric substrate; The fractal square patch is located in the inside of the special-shaped resonant square ring. A gap is left between the special-shaped resonant square ring and the fractal square patch, and a varactor is loaded in the center of the gap around the ring. The radome of the invention has the characteristics of high transmittance, wide angle incidence and polarization insensitivity, and can be used in the fields of radar, ultra-wideband antenna, aircraft skin, multi-channel communication, high-purity radiation and the like. 本发明公开了种宽带频率可重构FSS天线罩，属于电磁波调控技术领域。本发明以FSS超薄单元作为单元紧凑结合，呈M*N周期性排布；FSS超薄单元包括异形谐振方环、分形方贴片和介质基板；分形方贴片位于异形谐振方环的内部；异形谐振方环和分形方贴片之间留