雙頻段雙極化星載降水測(cè)量雷達(dá)天線設(shè)計(jì)

方剛; 張玉梅

doi:10.11999/JEIT160016

雙頻段雙極化星載降水測(cè)量雷達(dá)天線設(shè)計(jì)

doi: 10.11999/JEIT160016

方剛¹,
張玉梅¹

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出版歷程
- 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: 為了解決雙頻段雙極化星載降水測(cè)量雷達(dá)的波束寬度匹配和波束指向匹配問(wèn)題，該文提出雙頻雙極化共孔徑饋源照射拋物柱反射面天線的方案。共孔徑饋源Ku頻段采用微帶天線，Ka頻段采用波導(dǎo)縫隙天線，兩者層疊交錯(cuò)排列在一起。實(shí)測(cè)結(jié)果表明，波束寬度匹配指標(biāo)和波束指向匹配指標(biāo)與美國(guó)國(guó)家航空航天局正在研發(fā)的第2代星載降水測(cè)量雷達(dá)的指標(biāo)相當(dāng)。相對(duì)于第2代星載降水測(cè)量雷達(dá)天線采用的分置式饋源，該文給出的共孔徑饋源具有占用空間小的優(yōu)點(diǎn)，適用于星載平臺(tái)。
- 共孔徑天線 /
- 星載降水測(cè)量雷達(dá) /
- 雙頻段 /
- 雙極化 /
- 拋物柱反射面
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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參考文獻(xiàn)(23)

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