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G波段扩展互作用速调管宽带注波互作用系统研究

曾鑫 曲兆伟 薛谦忠

曾鑫, 曲兆伟, 薛谦忠. G波段扩展互作用速调管宽带注波互作用系统研究[J]. 强激光与粒子束, 2021, 33: 033007. doi: 10.11884/HPLPB202133.200313
引用本文: 曾鑫, 曲兆伟, 薛谦忠. G波段扩展互作用速调管宽带注波互作用系统研究[J]. 强激光与粒子束, 2021, 33: 033007. doi: 10.11884/HPLPB202133.200313
Zeng Xin, Qu Zhaowei, Xue Qianzhong. Research of G-band extended interaction klystron broadband beam-wave interaction system[J]. High Power Laser and Particle Beams, 2021, 33: 033007. doi: 10.11884/HPLPB202133.200313
Citation: Zeng Xin, Qu Zhaowei, Xue Qianzhong. Research of G-band extended interaction klystron broadband beam-wave interaction system[J]. High Power Laser and Particle Beams, 2021, 33: 033007. doi: 10.11884/HPLPB202133.200313

G波段扩展互作用速调管宽带注波互作用系统研究

doi: 10.11884/HPLPB202133.200313
基金项目: 国家重点研发计划项目(2019YFA0210201);国家自然科学基金项目(11475182)
详细信息
    作者简介:

    曾 鑫(1996—),男,硕士研究生,主要研究方向为新型太赫兹辐射源技术;zengxin199609@163.com

    通讯作者:

    薛谦忠(1962—),男,研究员,博士生导师,长期从事新型太赫兹毫米波源与技术、天线理论及其应用研究;Qianzhong_xue@mail.ie.ac.cn

  • 中图分类号: TN122

Research of G-band extended interaction klystron broadband beam-wave interaction system

  • 摘要: 扩展互作用速调管采用多间隙分布作用谐振腔和全金属平面结构,互作用电路短、单位长度增益高,其平面化结构特征与现代微加工工艺相兼容,已成为发展太赫兹高功率源的研究热点,进一步展宽扩展互作用速调管放大器的带宽成为拓展其应用的关键技术问题。设计了一种G波段5腔多间隙注波互作用电路,采用参差调谐技术扩展群聚段带宽和滤波器加载技术扩展输出段带宽,通过CST软件对结构参数优化和输出特性模拟仿真,结果表明:在电子注电压19 kV,电流300 mA,输入功率120 mW时,获得输出功率222 W,电子效率3.89%,增益32.67 dB,3 dB瞬时带宽达到了1.5 GHz。
  • 图  1  多间隙谐振腔结构示意图

    Figure  1.  Schematic diagrams of multi-gap resonantor

    图  2  多间隙谐振腔内的电场分布

    Figure  2.  Electric field distribution in multi-gap resonantor

    图  3  间隙纵向电场沿漂移管的分布

    Figure  3.  Gap axial electric field distribution along drifting tube

    图  4  2π模与相邻模式的频率间隔

    Figure  4.  Frequency separation of 2π mode with adjacent mode

    图  5  2π模频率随间隙宽边w的变化

    Figure  5.  Variation of 2π mode frequency with gap broadside

    图  6  滤波器加载输出回路模型

    Figure  6.  Model of filter loading output circuit

    图  7  输出回路群时延特性

    Figure  7.  Group delay time of output circuit

    图  8  220.1 GHz和220.9 GHz处的电场分布

    Figure  8.  Electric field distribution at 220.1 GHz and 220.9 GHz

    图  9  输出腔频率响应曲线

    Figure  9.  Frequency response curves of output cavity

    图  10  注波互作用系统仿真模型

    Figure  10.  Simulation model of beam-wave interaction system

    图  11  输出功率及信号频谱

    Figure  11.  Output power and signal spectrum

    图  12  电子注相空间图

    Figure  12.  Image of the electron beam in phase space

    图  13  输入输出转换特性曲线

    Figure  13.  Input-output characteristic curve

    图  14  注波互作用系统频率响应曲线

    Figure  14.  Frequency response of beam-wave interaction system

    表  1  各腔间隙宽边、频率、R/QQ

    Table  1.   Gap broadside,frequency,R/Q and Q of each cavity

    cavityw/mmf/GHzR/Q)/ΩQ
    1 0.700 219.96 235.8 89.4
    2 0.707 219.59 174.5 401.6
    3 0.703 220.64 173.9 402.9
    4 0.701 221.16 173.5 402.7
    5 0.700 219.96 211.7 95.2
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-11-18
  • 修回日期:  2021-02-08
  • 网络出版日期:  2021-03-30
  • 刊出日期:  2021-03-05

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