Studies of a three-stage inverted gyrotwystron

We have studied by numerical simulation, a new three-stage configuration of the inverted gyrotwystron, which operates with harmonic-multiplying mechan ism. The simulations based on the analytical theory predicts a highly effic ient and high-phase stability operation of the device, and gives results co nsistent with those measured in experiment, Related investigations of elect ron bunching, output power-frequency response, drive-gain dependence, and p hase fluctuations due to beam voltage rippling are also presented.