任意槽形螺旋槽慢波结构的色散方程  

The Unified Dispersion Equation of the Arbitrarily-Shaped Helical Corrugated Slow-Wave Structure

作　　者：魏彦玉[1] 王文祥[1] 宫玉彬[1] 孙嘉鸿[1] 周鹏[1] 

机构地区：[1]电子科技大学大功率微波重点实验室,成都610054

出　　处：《电子学报》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

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.

关 键 词：螺旋槽 慢波线 色散方程 行波管 

分 类 号：TN124[电子电信—物理电子学]