High-Voltage Nanosecond Pulse Generator Based on Non-balanced Blumlein Type Multilayered Microstrip Transmission Line
Mi Yan1, Zhang Yanyuan1, 2, Chu Yi-dao 1, Yao Chen-guo1, Li Cheng-xiang1
1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400044 China 2.Changshou Power Supply Company Chongqing City Power Company of State Grid Chongqing 401220 China
Abstract:For the requirement of the small and compact nanosecond pulse generator in biomedical field, the unbalanced Blumlein type multilayered microstrip transmission lines and the solid-state switching technology are combined to develop a high-voltage nanosecond pulse generator.Wave propagation analysis is used to explain the principle of the system when forming a square wave.Besides, the control timing sequenceof the related solid-state switches and the cutting-offwave strategy are adopted, so as to realize the adjustable 50~100 ns square wave pulse widths.The principle of the variable load impedance inthe unbalanced Blumlein type multilayered microstrip transmission line system is also interpreted.And a small testingsystem is established to testify the performance of the generator.The testing nanosecond pulse generator, with an amplitude of 0~2 kV, pulse width arrange from 50 ns to 100 ns, rising time about 20 ns and repetition frequency of 0~1 kHz, outputs the square pulse on the 50 Ω resistor load.Moreover, the nanosecond pulse voltage output is about twice as the charging voltage when a 500 Ω resistor is used as the load.
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