摘要
为了实现高功率微波器件的小型化,文中设计了一款在低磁场条件下高效率工作的S波段同轴输出的相对论磁控管。采用“荷叶型”输出结构直接提取高频场能量,使得器件在径向尺寸上结构更加紧凑,并在输入端引入阴极帽,进一步约束了高频场区域的轴向漂移电子,使得高频场能量充分转换,从而获得较高的输出功率及转换效率,同时增强了器件工作的稳定性。在全电磁粒子模拟软件CHIPIC中建立三维模型,分析了不同尺寸的“荷叶型”输出结构对磁控管输出性能的影响。经优化设计后,模拟仿真结果显示,该相对论磁控管在工作电压180 kV,外加磁场0.27 T的条件下,具有200 MW的输出功率和44.3%的功率转换效率,其工作频率为2.425 GHz,输出模式为TEM模。
A relativistic magnetron with a coaxial output in the S-band that operates efficiently under low magnetic field conditions has been designed for miniaturized high-power microwave devices.The lotus leaf-type output structure is used to directly extract high-frequency field energy,making the device more compact in radial size.A cathode cap is introduced at the input side to further constrain the axial drift electrons in the high-frequency field region,allowing for sufficient conversion of high-frequency field energy and achieving higher output power and conversion efficiency,while enhancing the stability of the device′s operation.A three-dimensional model is built in CHIPIC,a full electromagnetic particle simulation software,to analyze the effects of different sizes of the lotus leaf-type output structure on the output performance of the magnetron.After the optimized design,the simulation results show that this relativistic magnetron has an output power of 200 MW and a power conversion efficiency of 44.3%at an operating voltage of 180 kV and an applied magnetic field of 0.27 T.It operates at an operating frequency of 2.425 GHz,with an output mode of TEM mode.
作者
姜山易
毛晓军
吕朋杰
江云
蔡芳盛
陈子翀
尹蕊
JIANG Shanyi;MAO Xiaojun;L Pengjie;JIANG Yun;CAI Fangsheng;CHEN Zichong;YIN Rui(Hunan Vanguard Group Co.,Ltd.,Changsha 410100,China)
出处
《微波学报》
CSCD
北大核心
2024年第6期26-31,共6页
Journal of Microwaves
基金
湖南省科技创新计划(2023RC3265)。
关键词
高功率微波
相对论磁控管
“荷叶型”输出结构
TEM模式
全电磁粒子模拟
high power microwave
relativistic magnetron
lotus leaf-type output structure
TEM mode
full electromagnetic particle simulation
