双频带宽通带毫米波滤波器设计

选取Y 环和Y 组成的复合图形为基本图形单元，采用密集三角形排布方式，设计了
一种密集型组合单元频率选择表面（FSS）结构。基于谱域法，通过重新选取新的分析单元的方法，从理论上进行了频谱分析。分析结果表明，该FSS 结构能够实现双频的宽通带特性，并且具有很好的极化稳定性和角度稳定性。
关键词：滤波器；频率选择表面；谱域法；极化稳定性；角度稳定性

Abstract: Frequency Selective Surface (FSS) of complex dense elements is presented in this
paper. The complex elements composed of Y loop and Y geometries are closely packed in
triangle form. Based on the spectral-domain method, this FSS structure was analyzed by
selecting a new analytical unit. It is shown that this complex dense FSS structure has
dual-frequency and wide pass-band properties with better performance of polarization and
incident angles independence.
Key words: Filter; frequency selective surface (FSS); the spectral-domain method; polarization
independence; independence of incident angles