Development of the high repetitive frequency solid-state pulse generator based on DSRD

This paper presents a solid-state pulse generator based on drift step recovery diode (DSRD) - a new high-power, ultra-fast semiconductor opening switch, and a saturable pulse transformer. The topology structure of circuit is designed, the operating principle of the pulse generator is analyzed theoretically. And the influence of several key circuit parameters on the output waveform of the pulse generator is studied, including the coil winding turns, the magnetic core layers, the load resistance, and the trigger pulse width. The experimental results show that the pulse generator can produce a pulse at a 50 kΩ-resistive load with amplitude 38.2 kV, rise time 7.1 ns, pulse width 14.1 ns, output peak power 29.2kW, and it could work stably at the repetition frequency of 400 kHz.