Generation of high-voltage subnanosecond pulses with a peak power of 700 MW and repetition frequency of up to 3.5 kHz

Test results of a combined subnanosecond modulator with an output impedance of 45 Omega, which incorporates an all-solid-state high-voltage nanosecond charging device (with an inductive energy storage and a semiconductor open ing switch) and a pulse sharpener with gas-filled gaps, are presented. The sharpening and cutting spark gaps filled with hydrogen at a pressure of 100 atm ensured the formation of stable pulses with amplitudes of -(180-200) k V and durations of similar to (400-700) ps at a repetition frequency of up to 3.5 kHz. An average output power of 1.4 kW was achieved for the modulato r's burst-mode operation with a number of pulses in a packet of 10(4) at a maximum pulse repetition rate.