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高功率谐振式波导缝隙阵宽角扫描技术

马嘉雯 孙云飞 宛建峰 张强 袁成卫

马嘉雯, 孙云飞, 宛建峰, 等. 高功率谐振式波导缝隙阵宽角扫描技术[J]. 强激光与粒子束. doi: 10.11884/HPLPB202133.210307
引用本文: 马嘉雯, 孙云飞, 宛建峰, 等. 高功率谐振式波导缝隙阵宽角扫描技术[J]. 强激光与粒子束. doi: 10.11884/HPLPB202133.210307
Ma Jiawen, Sun Yunfei, Wan Jianfeng, et al. Investigationon wide-angle scanning technology for high power resonant waveguide slot array antenna[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202133.210307
Citation: Ma Jiawen, Sun Yunfei, Wan Jianfeng, et al. Investigationon wide-angle scanning technology for high power resonant waveguide slot array antenna[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202133.210307

高功率谐振式波导缝隙阵宽角扫描技术

doi: 10.11884/HPLPB202133.210307
详细信息
    作者简介:

    马嘉雯,jiawenm98@163.com

  • 中图分类号: TN45

Investigationon wide-angle scanning technology for high power resonant waveguide slot array antenna

  • 摘要: 在传统高功率缝隙波导阵列中,缝隙间的相互耦合严重影响了阵列的宽角扫描能力。以实现阵列宽角波束扫描为目标,通过分析阵列扫描特性,从提高缝隙阵元间隔离度的角度出发,提出在阵列中引入隔离栅结构,降低了阵元间耦合对阵列大角度扫描时的影响。在此基础上,设计了基于波导窄边斜缝的谐振式阵列天线,采用电磁仿真软件优化阵列。数值模拟结果表明,未采取措施前阵列的最大扫描范围为±34°,引入隔离栅后扫描范围可扩大至±46°,波导端口S11≤−10 dB,增益仅下降了2.3 dB,单根缝隙波导功率容量达330 MW,有应用于高功率微波领域的潜质。
  • 图  1  窄边波导缝隙阵及其等效电路模型

    Figure  1.  Narrow waveguide slot array and equivalent circuit

    图  2  窄边斜缝交叉极化

    Figure  2.  Cross polarization of inclined slot

    图  3  3种常见扼制交叉极化的结构

    Figure  3.  Three kinds of cross-polarization suppressing structure

    图  4  倒向放置波导阵列波束扫描方向图

    Figure  4.  Pattern of symmetrical slotted waveguide array

    图  5  三种阵列波束扫描时的S11

    Figure  5.  S11 with different beam scanning angle

    图  6  加载隔离栅波导缝隙阵

    Figure  6.  Slotted waveguide array with isolation barrier

    图  7  缝隙等效电导随阵列扫描角的变化

    Figure  7.  The equivalent conductance with beam scanning

    图  8  天线辐射阵面示意图

    Figure  8.  Schematic diagram of antenna array radiation surface

    图  9  最大辐射方向上交叉极化

    Figure  9.  Cross polarization in the direction of maximum radiation

    图  10  H面波束扫描

    Figure  10.  H-plane beam scanning pattern

    图  11  线阵S11随波束扫描变化

    Figure  11.  S11 with different beam scanning angle

    图  12  阵列扫描角为0°三维方向图

    Figure  12.  Array pattern when scanning angle is 0

    图  13  阵列扫描角为0°三维方向图

    Figure  13.  Array pattern when scanning angle is 45

    图  14  单根缝隙波导电场分布

    Figure  14.  Electric field distribution of slot waveguide

    图  15  介质窗大气侧表面电场分布

    Figure  15.  Surface electric field distribution on the atmosphere side of the dielectric window

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出版历程
  • 收稿日期:  2021-07-22
  • 修回日期:  2021-09-04
  • 网络出版日期:  2021-09-15

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