| 一种星载扫描天线的分析与设计 |
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| 引用本文： | 崔广斌,苗俊刚.一种星载扫描天线的分析与设计[J].宇航学报,2012,33(9):1308-1313. |
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| 作者姓名： | 崔广斌 苗俊刚 |
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| 作者单位： | 北京航空航天大学电子信息工程学院,北京,100191 |
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| 摘 要： | 为适应卫星平台的需要,达到卫星天线能够实现角度扫描(正负5度)和机械扫描结构尽可能简单的要求,本文设计了一种三反射镜配置结构的角度扫描天线。首先利用几何光学法设计了赋形面,然后确定了在不同的扫描角度时,平面镜移动到的位置点。最后,利用高斯衍射波束分析方法(Diffraction Guassian Beam Analysis)进行了电性能的仿真验证。结果显示,在所需角度的扫描范围内,其具有较高的主面孔径利用效率和扫描机械结构简单的特点。在兼顾角度扫描和机械扫描结构简单的条件下,天线达到了所需的性能要求。
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| 关 键 词： | 反射面天线 赋形面 几何光学法 物理光学法 |
Triple-Reflector Antenna Design and Performance Analysis for Geostationary Satellite Platform |
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| CUI Guang-bin
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MIAO Jun-gang.Triple-Reflector Antenna Design and Performance Analysis for Geostationary Satellite Platform[J].Journal of Astronautics,2012,33(9):1308-1313. |
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| Authors: | CUI Guang-bin MIAO Jun-gang |
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| Institution: | (School of Electronics and Information Engineering,Beihang University,Beijing 100191,China) |
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| Abstract: | A triple-reflector configuration for the scanning antenna with scanning angle of±5°for the geostationary satellite platform is presented in this paper.Within the scanning range,this configuration has high aperture efficiency realized by a simple mechanical structure.First,the geometrical optics method is used to design the reflector shaped surfaces.Second,the location of the planar reflector is determined at different scanning angles.Finally,the Diffraction Gaussian Beam Analysis(DGBA) method is used to simulate and determine the electrical properties of the reflectors.The simulation results show that the triple-reflector antenna configuration satisfies the requirement for wide-angle scanning,and its simple mechanical configuration is suitable for practical use. |
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| Keywords: | Reflector antenna Shaped surface Geometrical optics method Physical optics method |
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