| 毫米波赋形聚焦双反射面天线设计 |
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| 引用本文： | 薛长江,余川,屈劲,施美友.毫米波赋形聚焦双反射面天线设计[J].强激光与粒子束,2016,28(8):083003. |
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| 作者姓名： | 薛长江 余川 屈劲 施美友 |
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| 作者单位： | 1.中国工程物理研究院 电子工程研究所, 四川 绵阳 621 900; |
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| 摘 要： | 为实现一种具有近场聚焦、斜波束出射能力的偏馈口径天线，采用几何光学方法设计了一种赋形聚焦双反射面天线。基于光线传播的能量守恒定律、Snell定律及光径长度相等三个光学定律开展了天线主反射面赋形设计，副反射面的设计采用 Snell 定理作为约束条件。 通过理论公式和实验测试研究，实现了一种出射波束口径为 110 cm、波束出射方向与竖直方向成 20夹角的赋形聚焦偏馈双反射面天线。在中心频率 95 GHz 下，实测相位实现近场聚焦，出射波束与垂直方向成20夹角。
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| 关 键 词： | 聚焦天线 双反射面天线 几何光学 赋形天线 |
| 收稿时间： | 2015-11-30 |
Design of shaped millimeter wave focus antenna with dual-reflector |
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| Institution: | 1.Institute of Electronic Engineering,CAEP,Mianyang 621900,China;2.Science and Technology on High Power Microwave Laboratory,Institute of Applied Electronics,CAEP,Mianyang 621900,China |
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| Abstract: | A shaped scheme based on geometric optics for offset-fed dual-reflector focus antenna is presented. The main reflector is a shaped antenna based on conservation of energy along a ray tube, Snells law, uniform phase and equal path length. Only Snells law is imposed on the sub-reflector. Based on this design solution, theoretical analysis, numerical simulation and experimental test are carried out for a 110 cm dish baseline system with an angle of 20 between x axis and the beam. The experiment shows that at 95 GHz, the antenna has a well focusing through phase measurement with an angle of 20 between x axis and the beam. |
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