| 摘要: |
| 提出一种偏照馈电的X/Ka双频段极化扭转式卡塞格伦天线形式，实现了气象和防撞雷达
系统共用一副天线，达到降低气象和防撞雷达设备体积和重量的目的。天线的试验结果表明
，天线波束扫描范围内，在X频段，天线的副瓣电平优于-20.2 dB，天线效率优于448
%；在Ka频段，天线的副瓣电平优于-20.1 dB，天线效率优于402%。该天线能兼顾满
足气象和防撞雷达系统的技术要求,具有一定的工程应用价值。 |
| 关键词: 防撞雷达 气象雷达 共口径天线 极化扭转式卡塞格伦天线 |
| DOI：doi:10.3969/j.issn.1001-893x.2013.06.022 |
|
| 基金项目:中国电子科技集团公司第十研究所基础技术基金项目（H10001.5） |
|
| An X-band and Ka-band common-aperture antenna for helicopter-borne weather radar and collision avoidance radar |
| GUAN Zheng-tao |
| () |
| Abstract: |
| An offset feed X-band and Ka-band polarization torsi
on cassegrain antenna is proposed in this paper. To reduce
the size and weight of helicopter-borne weather radar and collision avoidance
radar, the dual-band common-aperture antenna is used in the two radar syste
ms. The test results indicate that the side-lobe level of the antenna is no l
ess than -20.2 dB in X-band and -20.6 dB in Ka-band, and that
the efficiency of the antenna is no less than 44.8% in X-band and 40.2% in
Ka-band in scan range of the beam.The antenna meets the requirement of both
weather radar and collision avoidance radar,and has engineering application value. |
| Key words: collision avoidance radar weather radar common-aperture antenna polarization torsion cassegrain antenna |
《电讯技术》编辑部 