W波段波束波导天线系统的设计  

Design of W-band Beam Waveguide Antenna System

作　　者：谷胜明[1] 刘昊 张凤林 刘少斌[1] 

机构地区：[1]南京航空航天大学,南京210016 [2]北京遥测技术研究所,北京100076

出　　处：《遥测遥控》2009年第5期49-53,共5页Journal of Telemetry,Tracking and Command

摘　　要：介绍W波段波束波导天线系统,包括双模圆锥喇叭馈源、双抛物面波束波导和偏置卡塞格仑天线。设计的24dB增益且易于加工的双模圆锥喇叭馈源具有圆周对称的辐射方向图。在此喇叭馈源的基础上,设计出双抛物面波束波导和偏置卡塞格仑天线。仿真结果表明,设计的双抛物面波束波导可以很好地将喇叭馈源映射到偏置卡塞格仑天线副镜的焦点。采用物理光学法对整个天线系统的幅度方向图进行仿真分析,结果显示该波束波导天线具有高增益、低旁瓣和较高的极化纯度。This paper presents a W-band beam waveguide antenna system including dual-mode conical horn,dual parabolic beam waveguide and offset Cassegrain antenna.A 24dB gain and easy to fabricate dual-mode conical horn with circular symmetry radiation patterns is designed as the feed.On the basis of the feed,a dual parabolic beam waveguide and offset Cassegrain antenna are designed.A perfect image of the feed can be generated at the Cassegrain focus by the beam waveguide.Then the physical optics method is used to analyze the whole antenna system.The simulation results indicate that the antenna has high gain,low side lobe and high polarization purity.

关 键 词：W波段 双模圆锥喇叭 波束波导 偏置卡塞格仑天线 

分 类 号：TN821[电子电信—信息与通信工程]