一种基于传输零点插入的多通带频率选择表面  

A surface for zero-insertion transmission multi-passband frequency selection

作　　者：唐旭英 万国宾[1] 付斌 韩先锋[1] 赵志颖 TANG Xuying;WAN Guobin;FU Bin;HAN Xianfeng;ZHAO Zhiying(School of Electronics and Information,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西北工业大学电子信息学院,陕西西安710072

出　　处：《中国舰船研究》2020年第5期79-84,共6页Chinese Journal of Ship Research

摘　　要：[目的]针对目前多频段频率选择表面存在的通/阻带选择性能有限、调控效果差的缺点,基于传输零点插入方法,设计一种多通带频率选择表面(FSS)。[方法]FSS单元由2层相同的组合结构和1层环形贴片结构组成,具有多个传输零点,可以通过调整物理尺寸实现对通/阻带频率的独立控制。基于FSS的等效电路法,按照其物理结构建立等效电路模型并进行分析,全波仿真与等效电路法(ECM)计算结果可以很好地拟合。[结果]仿真结果表明,所设计的三通带FSS可在C,X,Ku频段内形成3个传输通带,位于通带两侧的零点形成了陡峭的边沿,缩短了过渡带,高频零点形成了宽传输阻带,进一步提升了带外选择性能。[结论]所设计的FSS在工作频段内具有良好的极化稳定性和角度稳定性,且通/阻带独立性较好。[Objectives]Focusing on the shortcomings of limited band selection and poor control effectiveness of the current multi-band frequency selective surface,this paper designs a multi-passband frequency selection surface based on the transmission zero insertion method.[Methods]The FSSs consist of two layers of the same combined structure and a ring-shaped patch structure.It has multiple transmission zeroes and can control the pass/stop-band independently by adjusting physical parameters.The equivalent circuit model is established according to FSS's physical structure through the equivalent circuit method.The full-wave simulation and ECM(equivalent circuit method)calculation results can be well fitted.[Results]The simulation results show that the designed tri-passband FSS can form passbands in the C,X and Ku bands.The zero points on both sides of the passband form steep edges and a high-frequency stop band.The stop band enhances the outof-band selection performance.[Conclusions]The operating frequency band sees a fine polarization stability and angular stability,and the pass/stop bands have a high level of independence.

关 键 词：频率选择表面 多通带 传输零点插入 等效电路模型 角度稳定性 

分 类 号：U665.22[交通运输工程—船舶及航道工程]