| 关于双反射面天线的两个优化问题 |
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| 引用本文： | 王爵骐,柳灏.关于双反射面天线的两个优化问题[J].宇航学报,1991(4):83-88. |
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| 作者姓名： | 王爵骐 柳灏 |
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| 作者单位： | 中国空间技术研究院总体部 北京
(王爵骐)，中国空间技术研究院总体部 北京(柳灏) |
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| 摘 要： | 在航天器上和地面站中,广泛采用着双反射面天线。本文探讨了双面天线的两个优化问题。当主面为现存的抛物面时,使副面优化赋形,从而比之经典双面(抛物面——双曲面)的增益提高(0.48～0.40)~(dB)(对应于D/λ=20～100)。寻求偏置柱形双反射面系统的最佳设计,使其在馈源方向图变化时,口径场分布最接近同相等幅。
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| 关 键 词： | 航天器 天线 地面站 反射面 赋形 |
TWO OPTIMIZATION PROBLEMS FOR DUAL-REFLECTOR ANTENNAS |
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| Wang Jueqi Liu Hao.TWO OPTIMIZATION PROBLEMS FOR DUAL-REFLECTOR ANTENNAS[J].Journal of Astronautics,1991(4):83-88. |
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| Authors: | Wang Jueqi Liu Hao |
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| Abstract: | In spacecraft and Earth-station,the dual-reflector antennas are widely used nowadays. This paper discusses two optimization problems for dual-reflector antennas. As the main reflector is an existing paraboloid, the secondary reflector is shaped optimally so that as compared with the classical dual-reflectors (paraboloid-hyperboloid) the gain is increased by 0.48-0.40 dB (for D/A = 20-100). The optimal design of offset cylindrical dualreflector system is sought, so as to make the aperture distribution to be most approximate to that of uniform phase and amplitude when the feed pattern changes. |
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| Keywords: | Spacecraft antenna Earth-station antenna Gain Optimization Reflector shaping |
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