面向卫星通信的内导体非接触同轴接头设计方法  

Design method of coaxial connector with noncontact inner conductors for satellite communication

作　　者：张欣[1] 李金凤 刘长军[1] 陈翔[2] 崔万照[2] ZHANG Xin;LI Jinfeng;LIU Changjun;CHEN Xiang;CUI Wanzhao(School of Electronic and Information,Sichuan University,Chengdu Sichuan 610064,China;National Key Laboratory of Science and Technology on Space Microwave,China Academy of Space Technology(Xi'an),Xi'an Shaanxi 710000,China)

机构地区：[1]四川大学电子信息学院,四川成都610064 [2]中国空间技术研究院西安分院空间微波技术重点实验室,陕西西安710000

出　　处：《太赫兹科学与电子信息学报》2023年第7期845-849,863,共6页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(62071316);国际合作项目资助项目(2021YFH0152)。

摘　　要：针对无源互调(PIM)严重影响卫星通信系统性能和稳定性问题,提出了一种利用内导体非接触式结构实现低PIM的同轴接头设计方法。设计并实现了2款分别工作在S波段和C波段的内导体非接触式同轴接头:S波段的内导体非接触式同轴接头在2.1~2.7 GHz下实测|S_(11)|<-30 dB,通带内插入损耗小于0.3 dB;C波段的内导体非接触式同轴接头在3.5~4.2 GHz下实测|S_(11)|<-30 dB,通带内插入损耗小于0.2 dB。该改进型同轴接头设计方法为卫星通信系统的微波连接器的设计提供了重要的参考价值和新的研究思路。A design method of low Passive Intermodulation(PIM)coaxial connectors using noncontact inner conductors is proposed in this paper.Coaxial connectors are widely used in satellite communication systems,and their PIMs seriously affect the communication performance.Two coaxial connectors with noncontact inner conductors in S-band and C-band are designed and implemented,respectively.The measured|S_(11)|of the proposed coaxial connectors is less than-30 dB from 2.1 GHz to 2.7 GHz in S band,and the insertion loss is better than 0.3 dB.The measured|S_(11)|of the C band connector is less than-30 dB from 3.5 GHz to 4.2 GHz,and the insertion loss is better than 0.2 dB.The proposed coaxial connector design method with noncontact inner conductors may lower the PIM of a coaxial connector and has bright future applications in satellite communication systems.

关 键 词：内导体非接触式同轴接头 卫星通信系统 S波段 C波段 等效电路 

分 类 号：TN61[电子电信—电路与系统]