宽带大功率频率选择表面设计  

Design of Wide-band High-power Frequency Selective Surface

作　　者：贾丹[1] 何应然[1] 韩国栋[1] 杨国栋[1] JIA Dan;HE Yingran;HAN Guodong;YANG Guodong(The 54th Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050000,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄050000

出　　处：《现代雷达》2021年第2期72-76,共5页Modern Radar

摘　　要：频率选择面可在开放空间将不同频段的电磁波分开,为反射面天线系统实现多频共用提供一种有效方法。文中研究了矩形孔全金属频率选择结构的传输特性,将阵列天线的周期理论用于指导频率选择结构设计,通过优化设计得到一种在Ka频段透波的宽带大功率频率选择副面。基于该频率选择结构的副反射面可用于Ka频段大功率波束波导天线系统中,实现天线系统的收发共用。文中仿真分析了该副反射面对天线系统的影响,并对矩形孔径副反射面进行了加工和插入损耗测试。实测结果显示,在27.5GHz~31GHz频段内,该大功率副反射面对圆极化电磁波的插入损耗小于0.65dB,具有宽带低损耗的优点,满足现代大功率天线系统多频共用需求。Electromagnetic wave with different frequencies can be divided by frequency selective surface(FSS), which provides an effective method for the multi-frequency band reflector antenna system. The transmission of the rectangular aperture FSS is studied, and the array theory is used as the guide of the FSS design. The size of the rectangular aperture FSS is optimized to obtain wide-band transmission in Ka band. High-power antenna system working in both Ka receive and transmit bands can be realized by using the FSS sub-reflector. The influence on the radiation properties of the antenna system is analyzed. The FSS sub-reflector is fabricated and measured. The experiment result shows that the insert loss of the sub-reflector is smaller than 0.65 dB from 27.5 GHz to 31 GHz for circular polarized wave. This high-power sub-reflector has the advantages of wide band and low loss, which will fullfill the multi-frequency requirement of the modern high-power antenna system.

关 键 词：频率选择面 副反射面 波束波导天线系统 多频段 

分 类 号：TN82[电子电信—信息与通信工程]