Inverted Magnetron

A radically different type of magnetron is described in which the positions of the cathode and the anode segments are inverted from those in ordinary magnetrons. The direction of curvature of the interaction space of this magnetron is therefore opposite that of conventional magnetrons. Electronic efficiencies of 50 to 80 per cent have been measured on these structures and static input impedances as low as 60 ohms have been observed on high-power pulse tubes. Sound scientific basis is provided for the use of the parallel-plane magnetron interaction space in new microwave devices.