一种宽带Ku/Ka频段馈源网络的设计  

Design of a Broadband Ku/Ka-band Feed Network

作　　者：张博[1] 李振生 ZHANG Bo;LI Zhensheng(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四所,河北石家庄050081

出　　处：《无线电通信技术》2025年第2期419-426,共8页Radio Communications Technology

摘　　要：针对Ku与Ka工作频带距离较近的问题,给出了一种宽带Ku/Ka频段馈源网络的设计方法。设计了一种Ku/Ka双频段分波器,采用曲线过渡形式,既满足了低频段的耦合性能又实现了对高次模的抑制,对Ku频段网络进行了级联仿真和一体化优化,有效提升了馈源网络的整体性能。设计了一种紧凑型Ka频段四端口圆极化网络,其由隔板极化器和两个频率双工器组成,频率双工器由E面T形节连接两个滤波器。加工了样机并进行了测试,测试结果表明馈源网络性能指标优良,且测试与仿真结果吻合良好。In order to meet the requirement of short frequency interval,a broadband design method of feed network for Ku/Ka-band is presented.In the design of the frequency divider,the profile of the circular waveguide changes gradually.The coupling effect and the suppression of the higher order modes in the lower frequency band can also be taken into account at the same time.Cascade simulation and integrated optimization of Ku-band network are carried out to effectively improve the overall performance of feed network.A compact four-port dual circular polarization network for Ka-band is described.It consists of a septum polarizer and two identical duplexers formed by an E-plane T-junction and of two filters.A prototype is manufactured and tested.Test results show that the performance index of the feed network is excellent,and test and simulation results are in good agreement.

关 键 词：Ku/Ka频段 分波器 隔板极化器 级联仿真 

分 类 号：TN820.1[电子电信—信息与通信工程]