摘要
Abstract
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关键词
太赫兹/超表面/雷达散射截面(RCS)减缩/极化转换/电磁吸收/柔性光学透明超表面Key words
terahertz/metasurface/RCS reduction/polarization conversion/electromagnetic absorption/Flexible Optically Transparent Metasurface(FOTM)分类
信息技术与安全科学
