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高功率平板波导螺旋阵列天线设计

秦洪才 袁成卫 宁辉 孙云飞 张强 许亮 严鹏

秦洪才, 袁成卫, 宁辉, 等. 高功率平板波导螺旋阵列天线设计[J]. 强激光与粒子束, 2021, 33: 023002. doi: 10.11884/HPLPB202133.200252
引用本文: 秦洪才, 袁成卫, 宁辉, 等. 高功率平板波导螺旋阵列天线设计[J]. 强激光与粒子束, 2021, 33: 023002. doi: 10.11884/HPLPB202133.200252
Qin Hongcai, Yuan Chengwei, Ning Hui, et al. Design of high power helical array antenna fed from planar waveguide[J]. High Power Laser and Particle Beams, 2021, 33: 023002. doi: 10.11884/HPLPB202133.200252
Citation: Qin Hongcai, Yuan Chengwei, Ning Hui, et al. Design of high power helical array antenna fed from planar waveguide[J]. High Power Laser and Particle Beams, 2021, 33: 023002. doi: 10.11884/HPLPB202133.200252

高功率平板波导螺旋阵列天线设计

doi: 10.11884/HPLPB202133.200252
基金项目: 国家自然科学基金项目(61771481)
详细信息
    作者简介:

    秦洪才(1990—),男,硕士研究生,工程师,从事高功率微波技术研究;qin_h_c@163.com

    通讯作者:

    袁成卫(1974—),男,博士生导师,研究员,从事高功率微波技术研究;cwyuan163@163.com

  • 中图分类号: TN811; TN814

Design of high power helical array antenna fed from planar waveguide

  • 摘要: 提出了一种工作在C波段的高功率平板波导螺旋阵列天线。以平板波导馈电,降低了馈电复杂性和馈电结构高度;对基本的电探针结构进行改进,通过控制扇形缝隙的圆心角大小来调整耦合量,并采用上下脊结构消除反射;设计了短螺旋天线结构,通过分离的参数分别优化轴比和反射,得到天线的轴比在−7°~7°的范围内小于0.5 dB;构建了一个20单元的直线馈电阵列,通过电探针结构从平板波导中耦合能量,实现了20单元的等幅馈电。最后仿真了一个工作在4.3 GHz,包含20×20个单元的螺旋阵列天线,结果表明:该天线的增益为31.6 dB,口径效率为74%,在4.11~4.43 GHz的频带范围内反射小于−16 dB,功率容量3.6 GW。
  • 图  1  平板波导螺旋阵列天线结构示意图

    Figure  1.  Schematic diagram of planar waveguide helical array antenna structure

    图  2  改进型电探针结构示意图

    Figure  2.  Schematic diagram of improved electric probe structure

    图  3  10单元等效电参数提取模型

    Figure  3.  Model for extracting equivalent electrical parameters of 10 units

    图  4  扇形圆心角随等效电导的变化关系

    Figure  4.  Sector central angle along with the change of equivalent conductance g

    图  5  脊参数随等效电导的变化关系

    Figure  5.  Ridge parameters along with the change of equivalent conductance

    图  6  短螺旋天线结构

    Figure  6.  Short helical antenna structure

    图  7  短螺旋天线轴比图

    Figure  7.  Short helical axial ratio

    图  8  20单元归一化等效电导图

    Figure  8.  Diagram of 20 units normalized equivalent conductance

    图  9  20单元直线阵列图

    Figure  9.  Picture of 20 units linear array

    图  10  20单元直线阵列端口S参数曲线

    Figure  10.  S-parameters of defferent ports of 20 units linear array

    图  11  阵列天线反射曲线

    Figure  11.  Reflection curve of the array antenna

    图  12  阵列天线三维方向图

    Figure  12.  3D directional pattern of the array antenna

    图  13  阵列天线局部电场图

    Figure  13.  Local electric field diagram of array antenna

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    [9] 李相强. 高功率径向线螺旋阵列天线研究[D]. 成都: 西南交通大学, 2008: 27-29.

    Li Xiangqiang. Investigations of high-power radial line helical array antenna[D]. Chengdu: Southwest Jiaotong University, 2008: 27-29
    [10] 杨一明. 高功率微波可扫描波导缝隙阵列天线技术研究[D]. 长沙: 国防科技大学, 2014: 46-47.

    Yang Yiming. Investigation on beam steering slotted waveguide array antenna for high power applications[D]. Changsha: National University of Defense Technology, 2014: 46-47
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    Yu Longzhou. Novel high power microwave scanning array antenna[D]. Changsha: National University of Defense Technology, 2019: 24-27
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出版历程
  • 收稿日期:  2020-08-29
  • 修回日期:  2020-12-16
  • 刊出日期:  2021-01-07

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