卡塞格伦天线副面赋形的设计与仿真  

Design and Simulation of a Shaped Subreflector for Cassegrain Antenna

作　　者：于海[1,2] 赵波 刘昊 刘淑芳 

机构地区：[1]西安电子科技大学,西安710071 [2]北京遥测技术研究所,北京100076

出　　处：《遥测遥控》2013年第1期44-47,共4页Journal of Telemetry,Tracking and Command

摘　　要：改造已有的卡塞格伦天线,使其具有低副瓣特性。对特定口面分布函数应用数值分析方法,对天线进行副面赋形设计,并对赋形副面应用FEKO软件进行仿真。仿真结果证实了赋形副面对天线方向图副瓣性能有明显改善,且天线增益及效率无明显下降。由于赋形仅仅改变副面形状,因此在工程应用中成本较低、易于实现。The designed Cassegrain antenna is reformed for a low sidelobe level in this paper.A specific aperture distribution is selected and the numerical analysis method is used to shape the subreflector of the antenna.The shaped subreflector model is built by the FEKO software for simulation.The simulation results show that the shaped subreflector can reduce the sidelobe level obviously without much gain loss or efficiency loss.Without any other change,the Cassegrain antenna with shaped subreflector can be realized easily and its cost is low.

关 键 词：卡塞格伦 副面 赋形 FEKO 

分 类 号：TN820.1[电子电信—信息与通信工程]