Ku/Ka双频段微波网络设计  

Design of microwave network operated in Ku/Ka-band

作　　者：张博[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《现代电子技术》2015年第16期23-25,共3页Modern Electronics Technique

摘　　要：双频共用和多频共用技术是目前卫星通信地球站天线的一个重要发展方向,其可以扩大通信容量,实现一站多用,大大降低成本。基于微波网络理论,提出一种Ku/Ka双频段微波网络的设计方案。通过分波器实现双频共用,在Ka波段工作于圆极化,Ku波段工作于线极化。Ku/Ka双频共用微波网络的核心器件有:分波器、低通滤波器等。该网络具有良好的驻波特性、较高的端口隔离度、旋转对称和良好的轴比特性的辐射方向图。最后给出了微波网络的实测结果,测试结果与技术要求吻合很好。The dual-band and multiband sharing technologies are the important development directions of satellite communication antenna in ground station, which can enlarge the communication capacity, realize multi-function station and decrease cost dramatically. Based on the theory of microwave network, a design scheme of Ka/Ku dual-band microwave network is presented here. It has a function of frequency sharing which is implemented by wave separator. The network operates circular polarization at Ka band, and linear polarization at Ku band. The design method of essential components （wave separator and low-pass filter） in Ku/Ka dual-band sharing microwave network system is elaborated. This network possesses good matching, high isolation be- tween ports, radiation pattern with good main circularity and axial ratio. The measured results of the microwave network are given. The measured results meet the technique requirement very well.

关 键 词：微波网络 分波器 低通滤波器 双频段 

分 类 号：TN820-34[电子电信—信息与通信工程]