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基于矩形波导缝隙馈电的阵列天线设计

余龙舟 袁成卫 贺军涛 张强

余龙舟, 袁成卫, 贺军涛, 等. 基于矩形波导缝隙馈电的阵列天线设计[J]. 强激光与粒子束, 2018, 30: 043004. doi: 10.11884/HPLPB201830.170443
引用本文: 余龙舟, 袁成卫, 贺军涛, 等. 基于矩形波导缝隙馈电的阵列天线设计[J]. 强激光与粒子束, 2018, 30: 043004. doi: 10.11884/HPLPB201830.170443
Yu Longzhou, Yuan Chengwei, He Juntao, et al. Design of array antenna based on slots coupling of rectangular wave-guide[J]. High Power Laser and Particle Beams, 2018, 30: 043004. doi: 10.11884/HPLPB201830.170443
Citation: Yu Longzhou, Yuan Chengwei, He Juntao, et al. Design of array antenna based on slots coupling of rectangular wave-guide[J]. High Power Laser and Particle Beams, 2018, 30: 043004. doi: 10.11884/HPLPB201830.170443

基于矩形波导缝隙馈电的阵列天线设计

doi: 10.11884/HPLPB201830.170443
基金项目: 

国家自然科学基金项目 61401485

详细信息
    作者简介:

    余龙舟(1988—), 男,博士研究生,从事高功率微波传输与辐射技术研究;cqycq1988@sina.com

  • 中图分类号: TN814

Design of array antenna based on slots coupling of rectangular wave-guide

  • 摘要: 提出一种具有高功率容量的直线阵列天线,该天线阵基于矩形波导缝隙馈电,馈电耦合结构采用新型的弧形耦合缝隙,利用小螺旋天线作为辐射单元,通过旋转螺旋线内导体来调整各个辐射单元相位,从而实现一维波束扫描。采用等效传输法进行理论设计,数值模拟结果表明,该长度为3200 mm的单元天线在中心频率8.40 GHz上可获得的增益为27.50 dB,主瓣轴比为0.51 dB。功率容量约90 MW,辐射效率为97.10%,反射低于-24 dB,波束扫描范围±38°。
  • 图  1  弧形缝隙耦合结构示意图

    Figure  1.  Configuration of cambered slot

    图  2  耦合腔结构示意图

    Figure  2.  Configuration of the coupling cavity

    图  3  等效电导随缝隙转角的变化

    Figure  3.  Relationship between equivalent g and θ(ϕ=200°)

    图  4  等效电导随缝隙圆心角的变化

    Figure  4.  Relationship between equivalent g and ϕ(θ=16°)

    图  5  口径等效电导分布

    Figure  5.  Distribution of aperture equivalent conductance

    图  6  阵列天线模型

    Figure  6.  Configuration of array antenna

    图  7  φ=0°的远场方向图

    Figure  7.  Far field pattern of φ=0°

    图  8  Θ=0.6°的远场方向图

    Figure  8.  Far field pattern of Θ=0.6°

    图  9  波束偏转

    Figure  9.  Beam steering

    表  1  工作状态缝隙结构尺寸与波长的关系(θ=15°)

    Table  1.   Relationship between dimension of slot and wavelength (θ=15°)

    r1/mm r2/mm ϕ/(°) average arc length/mm (λ/2-average arc length)/mm g
    3.00 5.00 225 15.71 0.26 0.032 4
    3.50 5.50 200 15.71 0.26 0.032 7
    4.00 6.00 181 15.80 0.17 0.032 4
    下载: 导出CSV

    表  2  天线结构参数

    Table  2.   Parameters of antenna structure

    R1/mm R2/mm r1/mm r2/mm a/mm b/mm s/mm d/mm h/mm
    12.50 8.60 4.50 6.50 30.00 16.00 3.00 22.00 4.00
    下载: 导出CSV
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    Xie Yanping, Guo Qinggong. Design and implementation of C-band omnidirectional waveguide-slot antenna. Information and Electronic Engineering, 2007, 5(2): 119-122 doi: 10.3969/j.issn.1672-2892.2007.02.009
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出版历程
  • 收稿日期:  2017-11-08
  • 修回日期:  2017-12-07
  • 刊出日期:  2018-04-15

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