Ka-band relative backward wave oscillator driven by all-solid-state pulsed power generator

This paper reports the experiment of a Ka-band relative backward wave oscillator(RBWO) driven by the all-solid-state pulsed power generator based on semiconductor opening switch. Under working voltage of 200～360 kV and current of 2.6 kA, the generator’s output is about 20 ns in pulse width with rise time less than 9 ns. The experiment show that Ka-band RBWO can generate microwaves with peak power about 50 MW, frequency 36～38 GHz, pulse width about 10 ns, and repetition rate 10 Hz。