C波段高效率同轴渡越时间振荡器的仿真研究
Simulation research on C-band high-efficiency coaxial transit-time oscillator
朱丹妮 1孟进 2邓秉方 2王海涛 2崔言程 2袁玉章2
作者信息
- 1. 海军工程大学军用电气科学与技术研究所,湖北武汉 430033;湖北东湖实验室,湖北武汉 430033
- 2. 海军工程大学军用电气科学与技术研究所,湖北武汉 430033
- 折叠
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.
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％.
关键词
同轴渡越时间振荡器/C波段/高效率/粒子模拟Key words
coaxial transit-time oscillator/C-band/high-efficiency/particle simulation引用本文复制引用
基金项目
湖北省面上基金(2022CFB526)
国家自然科学基金青年基金(61201582)
出版年
2024
NETL
NSTL
万方数据