脊加载环板行波管高频特性的研究

脊加载环板行波管是一种频带相对较宽的大功率行波管,本文用场匹配和变分原理相结合的方法,研究了脊加载环板慢波结构的导波特性及这种行波管的小信号、大信号特性,讨论了结构的几何尺寸及电子注参量对慢波的传播特性、小信号增益及注-波互作用非线性效应的影响.本文的结果将为脊加载环板行波管的设计提供理论基础.

Study of the High Frequency Characteristics of Ridge-Loaded Ring-Plane TWT

The ridge loaded ring plane traveling wave tube (TWT) is an important type of high power broad band microwave amplifier.Making use of field matching method,combining with the variational method,the dispersion equation of the ridge loaded ring plane slow wave structure and small signal gain of this type of TWT are presented in this paper.The influences of all geometrical dimensions on the propagation characteristics,and the effects of the electron parameters on the gain are discussed,respectively.A large signal numerical calculation has also been done to investigate the nonlinear phenomena in this kind of TWT.In order to get higher power in broader operating bandwidth for this kind of TWT,the optimum opening angle,a smaller radius of the loaded ridge,and appropriate electron parameters must be chosen.This paper provides the theoretical basis for design of the ridge loaded TWT.