Generation of ultra-short pulse sequences in crossed-field amplifier in self-excitation regime

A W-band amplifier with crossed fields operating under dual-frequency self-excitation conditions has been studied. It is shown that the generated frequencies correspond to the edges of the system bandwidths, at which there is a significant increase in coupling resistance. It is shown that by applying an external signal at a frequency equal to the average value between the generated frequencies, regimes of generating sequences of ultrashort pulses with a duration of about 20 ps, a repetition period of about 100 ps, and a peak instantaneous power of more than 1 kW can be obtained.