副反射面再赋形技术在环焦天线中的应用  

The Application of Technology for Reshaping Subreflector in Ringfocus Antenna

作　　者：刘亮[1] 王珂[1] Liu Liang;Wang Ke(The 39th Research Institute of China Electronics Technology Group Corporation)

机构地区：[1]中国电子科技集团公司第39研究所,西安710065

出　　处：《测控与通信》2024年第3期1-4,共4页

摘　　要：本文提出了1种基于光学射线追踪和等光程原理,重新赋形环焦天线副反射面的方法。该方法利用已有的环焦天线主反射面曲线,建立光程路径方程,求解出新的副反射面曲线和馈源照射角,实现了同一主反射面适配不同照射角馈源的功能。本文还通过设计两种不同照射角的大口径波纹喇叭,分别结合副反射面再赋形前后的环焦天线进行性能计算,用实例验证副反射面再赋形技术在改变天线副反射面形状和喇叭照射角的情况下仍可保证天线性能不受影响。A method of reshaping subreflector in ringfocus antenna which based on optical ray's tracking and principle of equal optical path is presented in this paper.This method utilizes the existing data of the main reflector in ringfocus antenna,establishing an equation system for optical path,solving the new subreflector's curve and feed's irradiation angle,realizing the function of adapting the same main reflector to feed network which has different irradiation angle.By designing two large caliber corrugated horns with different irradiation angles,this paper emulates ringfocus antenna with different feed's irradiation angle,verifies the fact that subreflector reshaping technology in ringfocus antenna can still maintain antenna performance.

关 键 词：副反射面再赋形 等光程原理 环焦天线 波纹喇叭 

分 类 号：TN8[电子电信—信息与通信工程]