| 有限元方法设计赋形波束缝隙面阵馈电网络 |
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| 引用本文： | 王杰,吕善伟.有限元方法设计赋形波束缝隙面阵馈电网络[J].北京航空航天大学学报,2002,28(5):574-577. |
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| 作者姓名： | 王杰 吕善伟 |
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| 作者单位： | 1. 中国航天科工集团25所,北京,100854;2. 北京航空航天大学,电子工程系 |
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| 摘 要： | 采用缝隙倾角变化实现幅度加权,采用等高但不等宽的波导实现相位加权,并设计了过渡段以减少反射,可以对赋形波束方向图面阵实现所需要的馈电.为了获得需要的幅度和相位,用有限元方法对缝隙单元尺寸、幅度激励和移相网络进行了数值仿真.通过调整几何尺寸来实现所需要的幅度与相位要求及阻抗匹配.最后给出了1个缝隙阵列天线的设计实例,发现理论计算的赋形方向图与实际测试结果在赋形波束主瓣内吻合很好.
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| 关 键 词： | 天线阵 馈线 有限元法 赋形波束 |
| 文章编号： | 1001-5965(2002)05-0574-04 |
| 收稿时间： | 2001-03-05 |
| 修稿时间： | 2001年3月5日 |
Feed Network Design of Shaped Beam Slotted Array by Finite Element Method |
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| WANG Jie,Lü,Shan-wei.Feed Network Design of Shaped Beam Slotted Array by Finite Element Method[J].Journal of Beijing University of Aeronautics and Astronautics,2002,28(5):574-577. |
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| Authors: | WANG Jie Lü Shan-wei |
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| Institution: | Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering |
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| Abstract: | Changing the angles of the centered inclined slots was used to design the array feed's amplitude distribution. Changing the widths and lengths of the waveguides was used to design the array feed's phase distribution. A new design method of the feed network of shaped beam slotted array by finite element method was presented. In order to obtain the amplitudes and phases needed, the feed slot sizes, the feed excitation amplitudes and the phase network were calculated by finite element method. An example of design indicates the theoretical and experimental results are consistent well in the main shaped beam. |
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| Keywords: | antenna arrays feed lines finite element method shaped pattern |
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