Performance improvement for sub-nanosecond Marx generator based on avalanche transistors by considering the traveling wave process

The Marx generator is an important device in pulse power technology for generating high voltage pulses. In general, the equivalent circuit of Marx generator circuit is a lumped parameter circuit under the condition of electrically small. However, for a Marx generator generating very short pulses such as ultra-wideband pulses, it is necessary to consider the wave process of pulse forming from the original terminal to the output terminal. In this paper, the circuit model of Marx generator involved distributed transmission lines is introduced, which considering the wave process. The difference between the newly raised Marx generator circuit model and the traditional Marx circuit is demonstrated by simulation and experiment. Based on this circuit model, it is useful to explain the pulse forming process accurately and to optimize the pulser design.