构架式可展开网状抛物面天线反射器设计和分析  

Design and Analysis of Deployable Parabolic Truss-Mesh Reflector Antenna

作　　者：韦娟芳[1] 关富玲[1] 周丽萍[2] 王勇[2] 刘天林 

机构地区：[1]浙江大学,杭州310027 [2]西安空间无线电技术研究所,西安710000

出　　处：《中国空间科学技术》2002年第5期61-66,共6页Chinese Space Science and Technology

摘　　要：介绍了一种构架式网状可展开抛物面天线 ,它具有展缩比大 ,质量轻和频段宽等特点 ,可用作小卫星合成孔径雷达天线和其它S、L频段星载通信天线。设计天线的展开尺寸为 2 8m× 6m ,工作在S频段 ,带宽大于 10 0MHz。介绍了天线反射器的结构总体方案和关键部件的结构设计 ,同时对反射器的形面精度、热变形以及刚度等指标进行了分析计算。初步试验结果表明 。A deployable parabolic reflector of truss mesh antenna i s described.The antenna has the characters of high deployed/stowed ratio,small a rea mass density and broadband frequency.It can be used for Synthetic Aperture R ader(SAR)antenna of small satellite and other S or L band antenna such as mobile satellite antenna.Deployable dimension of the parabolic reflector is 6m×2 8m. The frequency is S band with bandwidth greater than 100MHz.The antenna configura tions and structure design of the key parts are introduced,and the shape error a ssigning,thermal distortion and stiffness is analyzed.The test results of labora tory model show the structure design is practicable and feasible.

关 键 词：反射器 合成孔径雷达 抛物面天线 结构设计 星载设备 

分 类 号：V443.2[航空宇航科学与技术—飞行器设计]