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基于电磁局域谐振的路谐振理论,将集总LC器件加载到工字形周期阵列中,设计了一种新型频率选择表面极化分离结构.利用等效电路法分析了不同极化时该结构的作用机制,并采用全波分析法研究了极化方式、入射角度和集总参数对其传输特性的影响.结果表明:所设计的结构在6.37GHz附近具有良好的极化分离特性;在0°—40°扫描范围内,横电(TE)和横磁(TM)极化下结构传输特性均保持稳定;通过调控集总元件LC值,该结构在保持TE极化方向传输特性不变的同时,可以实现对TM传输特性的独立调节,使设计更加灵活.该结构为极化分离器以及极化波产生器的设计提供了借鉴.
Based on the resonant theory of the electromagnetic local resonance, the LC device is loaded into the H-shaped periodic array, and a new type of frequency selective surface polarization separation structure is designed. The equivalent circuit method is used to analyze the polarization of the structure The effect of polarization mode, incident angle and lumped parameter on the transmission characteristics were studied by full wave analysis.The results show that the designed structure has good polarization separation characteristics at 6.37GHz, In the range of -40 ° to 25 °, the transmission characteristics of the structure under both transverse (TE) and transverse (TM) polarization remain stable. By adjusting the LC value of the lumped element, the structure maintains the transmission characteristics in the TE polarization direction , Which can realize the independent adjustment of TM transmission characteristics and make the design more flexible.This structure provides reference for the design of polarization separators and polarization wave generators.