Application of forming-line pulse-compression in ultra-wide-spectrum technology
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摘要: 分析了基于同轴Blumlein线的高功率脉冲源对低阻抗短形成线充电、实现脉冲压缩的基本原理，给出了理想情况下，脉冲压缩后输出的高功率超宽谱脉冲电压、功率增益及能量效率计算公式。利用电路仿真软件建立了脉冲压缩电路模型，通过模拟验证了理论分析。模拟了实际主脉冲波形对输出脉冲的影响，结果表明：低阻抗压缩线充电时间变长、充电电压峰值降低；通过在前级脉冲源与脉压形成线之间增加一定长度传输线，可以有效提高压缩线充电电压。针对典型的同轴Blumlein线高功率脉冲源紧凑Tesla型高功率脉冲源CKP-1000，设计了脉冲压缩装置和测量系统，建立了完整的脉冲压缩实验系统，开展了脉冲压缩试验。该脉压系统可将4.5 ns输入脉冲压缩为前沿940 ps、半高宽约1 ns的亚纳秒脉冲，实现了约2.2倍的功率增益。实验数据与理论分析基本吻合。Abstract: The principle of charging low impedance forming line with ultra-wide-spectrum pulser based on Blumlein line to compress pulse is analysed in this paper. The voltage of the output pulse, the gain of the power and the energy efficiency have been figured out. A circuit model has been created with analyzing software, the simulation has verified the analysis. An experiment upon CKP-1000 has been made with complete pulse compression system. The results show that when the input pulse width is 4.5 ns, the output pulse can be compressed to be 1 ns in half-width and the front edge is only 940 ps. The power gain is up to 2.2.
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Key words:
- ultra-wide-spectrum pulse /
- pulse compression /
- Blumlein line /
- power gain
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