Secmotron—A new kind of high efficient micro wave tube

Secmotron (sector beam deflection modulation tube) is a new kind of high efficient microwave tube which is developed on the basis of gyrocon, The principle of gyrocon has been analyzed and it manifests that to increase circuit efficiency is necessary for improving the properties of gyrocon. One of the key points is to increase its perveance. An idea about sector beam is proposed to reduce the effect of space charge. Also the concept and construction of transforming a column beam to a thin sector beam are presented. The numerical calculation of some specific structure demonstrates that the above idea is realizable. This project is supported by NSFC