On the radiation phase stability of a relativistic coaxial backward-wave oscillator at decimeter wavelengths

The stability of the microwave radiation phase of A relativistic coaxial backward-wave oscillator with a modulating reflector relative to a fixed voltage at a rising edge of the feeding high-voltage pulse is shown. At a carrying frequency of 1.3 Ghz, the standard phase deviation in a series of 50 consecutive pulses was not more than 20 ps for the microwave pulse duration of 80 ns.