复合机理超宽带太赫兹柔性透明RCS减缩超表面OA

To address the challenge of simultaneously achieving transparency,flexibility,and balanced absorption and scattering suppression performance in conventional terahertz(THz)stealth materials,a composite-mechanism flexible transparent terahertz metasurface combining absorption,polarization conversion,and phase cancellation mechanisms is proposed,enabling broadband and wide-angle Radar Cross Section(RCS)reduction.Through equivalent circuit simulation optimization algorithms,theoretical absorption rates and dielectric thicknesses are calculated.Subsequently,Particle Swarm Optimization(PSO)is employed to optimize the anisotropic structure of Indium Tin Oxide(ITO)resistive films,integrating absorption and polarization conversion mechanisms to design a flexible transparent RCS reduction metasurface with THz wave absorption and polarization conversion capabilities.This metasurface achieves monostatic and bistatic RCS reductions exceeding-10 dB within the frequency ranges of 83.2～350.8 GHz and 84.4～347.9 GHz,respectively.Furthermore,the metasurface maintains excellent RCS reduction performance under oblique incidence and bending conditions with various curvatures,demonstrating broad application potential in THz wave absorption and RCS reduction