摘要
在三腔渡越管的基础上设计了一种工作在C波段的新型低阻轴向六腔渡越管,其阻抗为15Ω左右,采用同轴输出。该器件采用大面积发射阴极,无须外加磁场,结构简单紧凑。采用2.5维PIC软件对该器件进行了2维数值模拟,在输入电压为483 kV、电流为32.5 kA的条件下,输出微波平均功率达到3.0 GW,主频为3.75 GHz,微波模式为TEM模。微波功率效率大于19%,比普通低阻抗器件有明显提高。
A new low-impedance axial transit-time oscillator with six cavities at C-band was designed, based on three-cavity transit time oscillator（TTO）. The impedance of this oscillator is about 15 Ω, the microwave is exported in coaxial wave-guide. The oscillator possesses a large area cathode without extra magnetics. The oscillator is simulated in 2D model by 2.5-dimentional PIC code, the peak values of input voltage and current are 483 kV and 32.5 kA respectively; the average peak value of output microwave is over 3.0 GW, the main frequency is 3.75 GHz. The power efficiency of microwave is above 19% and better than that of the normal low-impedance osillators.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2007年第8期1343-1346,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
关键词
高功率微波
渡越时间振荡器
低阻抗
数值模拟
High power microwave
Transit time oscillator
Low-impedance
numerical simulation
