Design of a coaxial fast rising edge solid-state Marx generator

英文作者

doi:10.11884/HPLPB202638.260001

Article Contents

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英文作者, et al. Design of a coaxial fast rising edge solid-state Marx generator[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.260001

Citation:

英文作者, et al. Design of a coaxial fast rising edge solid-state Marx generator[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.260001

英文作者, et al. Design of a coaxial fast rising edge solid-state Marx generator[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.260001

Citation:

英文作者, et al. Design of a coaxial fast rising edge solid-state Marx generator[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.260001

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Design of a coaxial fast rising edge solid-state Marx generator

doi: 10.11884/HPLPB202638.260001

英文作者,

英文单位

Received Date: 2026-01-04
Accepted Date: 2026-03-17
Rev Recd Date: 2026-03-20

Available Online: 2026-04-18

Abstract

Abstract

Background
With the growing demand for fast-rising high-voltage pulses in industrial, medical, and plasma-related applications, solid-state Marx generators are increasingly used as pulse sources. However, the limited switching performance of semiconductor devices and constraints of circuit topology pose significant challenges for the design of solid-state Marx generators capable of producing very steep rising time.
Purpose
This study investigates the factors that determine the rise time of solid-state Marx generators and, on this basis, develops a generator that meets the performance requirements for fast-rising pulses.
Methods
A discharge-circuit model of a semiconductor-switched solid-state Marx generator was established, and simulations of parasitic elements were carried out in LTspice to identify their influence on the pulse rise time. In addition, the characteristic impedance of a coaxial output structure was incorporated into the simulations. Guided by these results, a solid-state Marx generator using dual parallel switching paths and a coaxial output structure was designed.
Results
Simulation results indicate that the series parasitic inductance of the circuit, the gate-drive resistance, and the Miller capacitance of the switches have the greatest impact on the rise time. By selecting appropriate MOSFETs and choosing a coaxial inner conductor with a characteristic impedance of 177.4 Ω for a 200 Ω load, a coaxial solid-state Marx generator was realized that delivers 10 kV/50 A pulses with a measured rise time of 7.6 ns.
Conclusions
Based on this analysis and design, a high-performance high-voltage pulse generator has been developed. The results provide a useful reference for further shortening the rise time of solid-state Marx generators, broadening their application range, and promoting their use as alternatives to conventional gas-switch Marx generators.
- solid-state marx generator,
- fast rising time,
- parasitic parameters,
- coaxial line,
- nanosecond pulse

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References(22)

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