The lens optics magnetron triodes of millimeter range

In the field of millimeter wave electronics, much attention is attracted to the pulse electromagnetic generators - the miniature surface wave magnetrons (SWM). These devices provide relatively high efficiency and output power. But such generators have the limitation which makes it impossible to control the amplitude and frequency of an output signal without power being consumed in the control circuit. To enable the SWM output signal frequency to be controlled within a pulse length with no power consumption in the control circuit, we suggest that the lens optic facilities with no metal obstacles to the electron movement should be applied. It is shown that using the electrostatic lenses one can regulate the geometric and electric parameters of that electron cloud part which is responsible for the effective interaction between the particles and the high-frequency field of a slow-wave system. The magnetron oscillators of the new class were named magnetron triodes with lens optics.