基于铁氧体传输线的脉冲陡化技术仿真研究  

Simulation research on pulse steepening technology based on ferrite transmission line

作　　者：江进波 曹宇 罗正 蔡宛辰 王佳栋 程廷强 Jiang Jinbo;Cao Yu;Luo Zheng;Cai Wanchen;Wang Jiadong;Cheng Tingqiang(Hubei Provincial Engineering Research Center for Power Transmission Line(China Three Gorges University),Yichang 443002,China;College of Engineering and New Energy,China Three Gorges University,Yichang 443002,China)

机构地区：[1]湖北省输电线路工程技术研究中心(三峡大学),湖北宜昌443002 [2]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《强激光与粒子束》2022年第9期57-64,共8页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51707105);国家重点实验室开放基金项目(SKLIPR2008)。

摘　　要：铁氧体传输线的脉冲陡化技术能够实现高频高功率快前沿脉冲输出,且具有固态化和紧凑化优点,已广泛应用于高功率微波源。关于铁氧体传输线脉冲陡化特性的仿真计算缺乏较为精确的模型,因此利用COMSOL仿真软件建立了铁氧体传输线仿真模型,考虑电磁波传播与磁芯磁化进动之间的相互影响,将Maxwell方程与Landau-Lifshitz-Gilbert(LLG)方程结合进行仿真计算,与实验结果进行对比验证了仿真模型的准确性。再在此模型基础上,研究了不同传输线长度、不同电压幅值,以及不同外加偏置磁场对脉冲波形的影响。结果表明:脉冲前沿随传输线长度的增大及电压幅值的增大而减小;外加偏置磁场对脉冲前沿有影响,选择合适的外加偏置磁场可以实现最小脉冲前沿输出。The pulse steepening technology of ferrite transmission lines can realize high-frequency and highpower fast front pulse output and has the advantages of solid-state and compactness.It has been widely used in highpower microwave sources.The simulation calculation of pulse steepening characteristics of ferrite transmission lines lacks a more accurate model.Therefore,this paper establishes the simulation model of the ferrite transmission line by using COMSOL simulation software,considering the interaction between electromagnetic wave propagation and magnetic core magnetization precession.The Maxwell equation and Landau-Lifshitz-Gilbert(LLG)equation are combined for simulative calculation.Compared with the experimental results,the accuracy of the simulation model is verified.Based on this model,simultaneous interpreting of the effect of different transmission line lengths,voltage amplitude,and external bias magnetic field on pulse waveform is studied.The results show that the pulse front decreases with the increase of transmission line length and the increase of voltage amplitude;The output of the minimum pulse front can be realized by selecting an appropriate external bias magnetic field.

关 键 词：铁氧体传输线 COMSOL MAXWELL方程 LLG方程 脉冲前沿陡化 

分 类 号：TM836[电气工程—高电压与绝缘技术]