摘要
扇调管(扇形电子束偏转调制管)是在偏调管(gyrocon)基础上发展起来的一种高效率微波管。木文分析了偏调管的基本原理及其限制,指出改善偏调管的性能必须提高其线路效率。本文论述了提高导流系数是其关键之一,从而引出了扇形束的设想以减弱空间电荷效应,并提出了使普通圆柱形电子束变成扁平的扇形束的基本概念和结构。最后给出了对具体结构进行数值计算的结果,表明以上设想是可行的。
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 properties of a 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 into a thin sector beam are presented. The numercal calculation of some specific structures demonstrates that above idea is realizable.
基金
国家自然科学基金
关键词
扇调管
微波管
Secmotron
Gyrocon
Deflection modulation
Sector beam
Perveance
