一种星载天线前端滤波功分组件设计  

Design of a Filtering Power Divider Module for Satellite Antenna Front-End

作　　者：戈海清[1] 何建平[1] 卢晓鹏[1] GE Hai-qing;HE Jian-ping;LU Xiao-peng(The 38th Research Institute of CETC,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,合肥230088

出　　处：《微波学报》2020年第6期48-51,60,共5页Journal of Microwaves

摘　　要：为抑制一颗卫星中多付天线之间的射频干扰,设计了一种用于天线前端的、采用滤波器与功分网络相串联原理的滤波功分组件。文中分析了低通原型滤波器和功分网络的等效电路,介绍了滤波功分组件的电性能和环境适应性设计方法。利用HFSS仿真软件进行了模型仿真和参数优化,并制作了实物进行数据测试。滤波功分组件的实物测试结果为:总口驻波VSWR<1.06,通道插入损耗小于0.21 dB,带内幅度起伏0.05 dB,通道间幅度一致性±0.1 dB,通道间相位一致性±1°,带外抑制(X波段)大于33dB。实际测试结果与仿真结果相一致。To suppress the radio frequency interference among multiple antennas in a satellite system,a filtering power divider module for satellite antenna front-end is designed.This module adopts the principle of series connection between the filter and the power divider network.Through the analysis of the equivalent circuit of the low-pass prototype filter and the power divider network,the design method of electrical performance and environmental adaptability of the filtering power divider module is introduced.Model simulation and parameter optimization are performed using HFSS simulation software,and physical objects are made for data testing.The physical test results are as follows:VSWR<1.06,channel insertion loss<0.21 dB,in-band amplitude fluctuation is 0.05 dB,amplitude consistency between channels is±0.1 dB,phase consistency between channels is±1°,out-of-band rejection>33 dB(X-band).The actual test results are consistent with the simulation results.

关 键 词：滤波功分组件 带外抑制 抗辐照 微放电 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计] TN713[电子电信—电路与系统] TN626