摘要
通过星载低无源互调(PIM)馈源的创新设计,结合某型号大功率馈源产品实例,详细阐述了低PIM馈源设计的仿真分析方法和试验验证结果。利用低PIM扼流法兰抑制连接面处产生三阶交调频率的传导电流来抑制PIM产物,可降低PIM值40dB以上;对于其他非三阶频率点的交调性能则通过传统的增强法兰压强的方式来改善。并与国外同类产品性能进行了比较,充分证明了该设计的正确性和技术水平。
The spaceborne low Passive Intermodulation(PIM) feed is designed for some type of high-power feed product. The simulation analysis method and the test results are given in detail. The proposed design utilizes choke flange with low PIM to depress the conduction current with third-order intermodulation frequency on the joint face in order to reduce the product of PIM, and the PIM value can be decreased by more than 40 dB. To decrease PIM for other non-third-order frequencies, the pressure of flange can be enhanced. The performance is compared with those of similar foreign products, which fully shows the validity of the design and its technical level.
作者
李瑜华
景莉莉
张明涛
张乔杉
弓金刚
LI Yuhua;JING Lili;ZHANG Mingtao;ZHANG Qiaoshan;GONG Jingang(China Academy of Space Technology(Xi’an),Xi’an Shaanxi 710000,China)
出处
《太赫兹科学与电子信息学报》
北大核心
2020年第4期633-638,共6页
Journal of Terahertz Science and Electronic Information Technology
关键词
大功率馈源
低PIM
结构设计
high-power feed
low Passive Intermodulation
structural design
