宽频段真空透波天线罩优化设计  

Optimal Design of Broadband Radome at Vacuum

作　　者：王海东[1] 董长胜[1] 伍洋[1] 白龙斌 WANG Haidong;DONG Changsheng;WU Yang;BAI Longbin(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2021年第7期649-654,共6页Radio Engineering

基　　金：国家科技部重点研发计划项目(2018YFE0207500)。

摘　　要：为满足杜瓦系统对天线罩的低温、真空环境和宽频段的使用需求,提高天线在天文领域的宇宙成像能力、降低外界噪声,选用石英纤维/氰酸酯复合材料作为其蒙皮材料,该材料低温下具有良好的拉伸、弯曲和压缩强度性能,-60℃比120℃力学性能提高了约35%,拉伸、弯曲和压缩模量随温度变化不大。通过结构和电气仿真,在1~30 GHz范围内,单层结构天线罩透波率仅优于79%;优化后的C夹层结构天线罩透波率优于90%,失稳载荷为0.12 MPa。In order to meet the requirement of low temperature,vacuum and broadband in the dewar system,the Quartz/CE composite was chosen as the skin to improve the imaging capability and reduce the noise.The Quartz/CE composite has well mechanical and electrical property.The tensile,bending and compressive strength of the Quartz/CE composite increased 35%from 120℃to-60℃.The modulus showed no obvious variation with the temperature.Through the optimization,the transmission efficiency of the radome with single structure was beyond 79%at the range from 1 to 30 GHz.The transmission efficiency of the radome with C structure was beyond 90%at the range from 1 to 30 GHz,while the buckling load is 0.12 MPa.

关 键 词：真空 天线罩 宽频段 透波率 

分 类 号：TG174.461[金属学及工艺—金属表面处理]