折叠型平板Blumlein线的理论与实验研究  

Theoretical and experimental research of a folded parallel-plates Blumlein line

作　　者：欧阳佳[1] 刘永贵[1] 刘金亮[1] 王明星[1] 冯加怀[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2007年第6期1044-1048,共5页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：对折叠型平板Blumlein线的特征参数进行了理论分析,采用模拟软件对传输线中的电磁场分布和波的传播过程进行了计算。根据理论分析和计算结果设计并制作了耐压600 kV、延时40 ns、特征阻抗为5Ω的折叠型平板Blumlein线,该Blumlein线以Kapton薄膜为介质、以铜板为导体,腔体尺寸为1.2 m×40cm×40 cm,初步实验在水电阻匹配负载上得到幅值为400 kV、脉宽36 ns的电压波形和幅值为40 kA的电流波形。在同样体积下进一步设计制作了耐压600 kV、延时150 ns、特征阻抗为15Ω的折叠Blumlein线,得到幅值为450 kV、脉宽150 ns的电压波形和幅值为18 kA的电流波形。In this paper a Blumlein line in folded parallel-plates configuration using Kapton film as dielectrics is investigated. The characteristic parameters of this Blumlein line were analyzed theoretically, and the electromagnetic field distribution and the process of the wave transmitting in the transmission line are simulated. According to the results of the theoretic analysis and simulation, a Blumlein line in folded parallel-plates configuration with output voltage of 600 kV, pulse duration of 40 ns, characteristic impedance of 5Ω was designed and manufactured. The chamber of the Blumlein line is 1.2 m long, 0. 4 m wide and 0.4 m high. The experimental results demonstrated the wave transmitting process in Blumlein line and gave the voltage waveform of 400 kV and the current waveform of 40 kA with a pulse duration of 36 ns. Another folded Blumlein line with output voltage of 600 kV, pulse duration of 150 ns, characteristic impedance of 15 Ω was designed and set in the same chamber. The experimental results gave the voltage waveform of 450 kV and the current waveform of 18 kA with a pulse duration of 150 ns. Engineering problems such as the edge electric breakdown and the measurement precision by a resistance divider were revealed, which must be solved in later work to manufacture more compact transmission line.

关 键 词：脉冲功率源 折叠型平板BLUMLEIN线 Kapton薄膜 电场分布 固体介质击穿 

分 类 号：TM834[电气工程—高电压与绝缘技术]