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Design of Dual-band Dual-polarized Spaceborne Precipitation Radar Antenna |
FANG Gang ZHANG Yumei |
(The 38th Research Institute of China Electronic Technology Group Corporation, Hefei 230088, China) |
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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.
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Received: 04 January 2016
Published: 24 June 2016
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Corresponding Authors:
FANG Gang
E-mail: fang_gang@126.com
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