一种新型双阻带频率选择表面的设计

摘要

提出一种新型双阻带 FSS 结构。新结构采用圆环贴片与叠加 Y 环贴片作为基本单元，利用2种贴片单元之间的耦合实现双阻带特性，应用谱域法对新型 FSS 单元进行分析设计，仿真验证不同角度不同极化方式的电磁波入射时新结构的传输特性，结果表明：该型 FSS 结构分别在13.4~16.3 GHz(Ku波段)和19.3~28.4 GHz(K波段)内形成2个-5 dB的传输禁带，并且具有较好的角度和极化稳定性。%A novel monolayer frequency selective surface with dual-stop-band is presented,and this new structure is composed of circular aperture element and overlapping Y loop element to obtain these dual-stop-band characteristics by utilizing the coupling of the two elements .The spectrum domain approach and the electromagnetic simulation software are used to analyze the characteristics of the structure.The results show that the structure FSS forms two transmission prohibited bands with -5 dB within a lower stop band (between 13.4 GHz and 16.3 GHz)and a higher stop band (between 19.3 GHz and 28.4 GHz)respec-tively,and the new structure is good in angle stability and polarization stability.The novel FSS structure has a great application potential in the antenna multiplexer of different-frequency,radar anti-j amming and the realization of stealth of the antenna radome.