摘要
在本文的分析中 ,将任意槽形的螺旋槽的连续轮廓近似用一系列相连的矩形阶梯代替 ,利用各阶梯面上导纳的匹配 ,以及槽与中心互作用区边界场的连续和区配条件 ,获得了任意形状螺旋槽慢波结构的色散方程 :同时加工制作了一半圆形螺旋槽模型 。
The helical groove slow wave structure (SWS) is a new type of RF system of milli meter traveling wave tube (TWT).However,it has narrow passband.For the purpose o f broadening this circuit,it is necessary to study the influence of groove shape on the characteristics.In this paper,the dispersion equation of a helical arbit rary-shaped groove slow wave structure is derived by means of an approximate fi eld-theory analysis,in which the continuous profile of the groove is approximat ely replaced by a serious of steps,and the field continuity at the interface of two neighboring steps and the matching conditions at the interface between the g roove region and central region are ensured.The cold test on dispersion characte ristics of a half-circular helical groove structure shows that the theoretical results are in good agreement with the experimental results.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第7期88-90,87,共4页
Acta Electronica Sinica
基金
电子科学研究院基金资助课题
关键词
螺旋槽
慢波线
色散方程
行波管
helical corrugated waveguide
slow-wave structure
dispersion equation
travelling wave tube
approximations
