系统工程与电子技术 ›› 2024, Vol. 46 ›› Issue (7): 2220-2227.doi: 10.12305/j.issn.1001-506X.2024.07.06

• 电子技术 • 上一篇    

C波段高效率同轴渡越时间振荡器的仿真研究

朱丹妮1,2, 孟进1, 邓秉方1, 王海涛1, 崔言程1,*, 袁玉章1   

  1. 1. 海军工程大学军用电气科学与技术研究所, 湖北 武汉 430033
    2. 湖北东湖实验室, 湖北 武汉 430033
  • 收稿日期:2023-03-30 出版日期:2024-06-28 发布日期:2024-07-02
  • 通讯作者: 崔言程
  • 作者简介:朱丹妮(1989—), 女, 副研究员, 硕士研究生导师, 博士, 主要研究方向为高功率微波技术、强流相对论真空电子学
    孟进(1977—), 男, 教授, 博士研究生导师, 博士, 主要研究方向为电磁攻防、电磁兼容
    邓秉方(1992—), 男, 讲师, 博士, 主要研究方向为高功率微波技术
    王海涛(1990—), 男, 讲师, 博士, 主要研究方向为高功率微波技术
    崔言程(1994—), 男, 讲师, 博士, 主要研究方向为高功率微波技术、脉冲功率技术
    袁玉章(1989—), 男, 讲师, 博士, 主要研究方向为高功率微波技术
  • 基金资助:
    湖北省面上基金(2022CFB526);国家自然科学基金青年基金(61201582)

Simulation research on C-band high-efficiency coaxial transit-time oscillator

Danni ZHU1,2, Jin MENG1, Bingfang DENG1, Haitao WANG1, Yancheng CUI1,*, Yuzhang YUAN1   

  1. 1. Military Electrical Science and Technology Institute, Naval University of Engineering, Wuhan 430033, China
    2. Hubei East Lake Laboratory, Wuhan 430033, China
  • Received:2023-03-30 Online:2024-06-28 Published:2024-07-02
  • Contact: Yancheng CUI

摘要:

C波段高功率微波产生器件在通信、雷达等领域具有重要的应用前景,工业部门对其紧凑化和轻量化的需求越来越迫切。本文采用理论分析和2.5维粒子模拟方法,设计了一个基于三腔调制双腔提取结构的C波段高效率同轴渡越时间振荡器(coaxial transit-time oscillator, CTTO),有利于实现低频段高功率微波器件的轻小型化。在调制腔前设计合适的反射腔可以有效预防横电磁波模式(transverse electromagnetic mode, TEM)反向传输到阴极区域,同时能预调制电子束,有效提升器件转化效率。经模拟优化后的典型结果表明:当二极管电压458 kV、电流9.6 kA及外加导引磁场1.05 T时,在中心频率6.37 GHz处获得了功率1.83 GW、转化效率41.6%的微波输出。

关键词: 同轴渡越时间振荡器, C波段, 高效率, 粒子模拟

Abstract:

C-band high-power microwave devices have important application prospects in communication, radar and other fields, and the demand for compact and lightweight devices is becoming more and more urgent in the industrial sector. A C-band high-efficiency coaxial transit-time oscillator (CTTO) with three-cavity buncher and dual-cavity extractor is proposed and investigated in theory and 2.5-dimensional particle-in-cell simulations, which is good for high power microwave generation devices at low frequency towards miniaturization and compactness. In order to avoid the transverse electromagnetic mode (TEM) leaking to the diode region, the reflector is designed and adopted in front of the buncher, which also can pre-modulate the beams and lead to the higher conversion efficiency.In this simulation, the typical performance of the CTTO reveals that microwaves with a power of 1.83 GW are generated at a frequency of 6.37 GHz when the beam voltage and current are 458 kV and 9.6 kA respectively, under a guiding magnetic field of 1.05 T. The corresponding power conversion efficiency is as high as 41.6%.

Key words: coaxial transit-time oscillator, C-band, high-efficiency, particle simulation

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