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
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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5 Ω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×40 cm×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15 Ω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。
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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
Abstract: 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 5 Ω 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 -
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