双频段双极化星载降水测量雷达天线设计

方刚; 张玉梅

doi:10.11999/JEIT160016

双频段双极化星载降水测量雷达天线设计

doi: 10.11999/JEIT160016

方刚¹,
张玉梅¹

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出版历程
- 收稿日期: 2016-01-04
- 修回日期: 2016-05-30
- 刊出日期: 2016-08-19

Design of Dual-band Dual-polarized Spaceborne Precipitation Radar Antenna

FANG Gang¹,
ZHANG Yumei¹

摘要

摘要: 为了解决双频段双极化星载降水测量雷达的波束宽度匹配和波束指向匹配问题，该文提出双频双极化共孔径馈源照射抛物柱反射面天线的方案。共孔径馈源Ku频段采用微带天线，Ka频段采用波导缝隙天线，两者层叠交错排列在一起。实测结果表明，波束宽度匹配指标和波束指向匹配指标与美国国家航空航天局正在研发的第2代星载降水测量雷达的指标相当。相对于第2代星载降水测量雷达天线采用的分置式馈源，该文给出的共孔径馈源具有占用空间小的优点，适用于星载平台。
- 共孔径天线 /
- 星载降水测量雷达 /
- 双频段 /
- 双极化 /
- 抛物柱反射面
Abstract: In order to achieve the matched beams goal of the dual-band dual-polarized spaceborne precipitation radar, the solution that a shared aperture feeding array illuminates the parabolic cylindrical reflector is proposed. The shared aperture feeding array using of microstrip patches for Ku band and waveguide slots for Ka band is proposed. The interleaved layout is selected to configurate the shared aperture feeding array. The measured results reveal that the beam width and the beam point are similar with that of the Second Generation Precipitation Radar, which is supported by National Aeronautics and Space Administration. The second generation precipitation radar antenna is a reflector offset-fed by two separated arrays. The volume of the shared aperture feeding array is smaller than that of two separated arrays, which is more applicable to the satellites.
- Shared aperture antenna /
- Spaceborne precipitation radar /
- Dual-band /
- Dual-polarization /
- Parabolic cylindrical reflector

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参考文献(23)

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