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从传统的频率选择选择表面(frequency selective surface,简称FSS)Jerusalem十字形单元出发,提出了一种新单元。经优化设计,给出了Jerusalem十字形单元和新单元的FSS结构参数,运用谱域Galerkin法和等效电路法对两种单元FSS的频率响应特性进行了分析。并对太赫兹波段带通频率选择表面滤波器进行了仿真研究。通过仿真技术分别研究了入射波角度及极化方式对其频率响应特性的影响。结果表明该结构对入射波极化方式的敏感性很低,并且在小于30范围内频率响应特性非常稳定。
Based on the traditional frequency selective surface (FSS) Jerusalem cruciform unit, a new unit is proposed. The FSS structural parameters of Jerusalem cross unit and new unit are given through the optimization design. The frequency response characteristics of the two unit FSS are analyzed by using the spectral Galerkin method and the equivalent circuit method. The terahertz band bandpass frequency selective surface filter is simulated. The influence of incident wave angle and polarization on the frequency response characteristics of them is studied respectively by simulation technique. The results show that the structure of the incident wave polarization mode sensitivity is very low, and less than 30 in the range of frequency response characteristics are very stable.