一种微波非线性电路建模新方法  

New modeling method for the microwave nonlinear circuit

作　　者：孙璐[1] 王家礼[1] 

机构地区：[1]西安电子科技大学机电工程学院,陕西西安710071

出　　处：《西安电子科技大学学报》2009年第2期294-297,342,共5页Journal of Xidian University

基　　金：电子测量技术国家重点实验室资助(6134903)

摘　　要：针对非线性微波电路的线性散射参数无法准确表征和设计问题,从线性网络参数的定义推广提出非线性散射函数,对其含义的描述和性质的推导建立了大信号散射函数的理论体系.在实际大信号条件下,搭建以数字示波器为核心的非线性网络测量系统,通过测量得到晶体管两端各次入射和反射波的幅度和相位信息,提取出非线性散射函数,得到了符合非线性电路规律的结果.The linear scattering parameter can not represent and design the nonlinear microwave circuit accurately.The definition of nonlinear scattering function can be introduced similar to the linear network parameter.The theoretical system of the nonlinear scattering function has been built based on the conclusions of their linearization,definition and characteristic.The nonlinear network measurement system based on the digital oscilloscope is built.To the microwave transistor,amplitude and phase of incident and reflected waves can be obtained.The nonlinear scattering function can be extracted from the measuremental result,and the experimental results conform to the rule for the nonlinear microwave circuit.This theory can be used as a new tool to character the nonlinear microwave circuit.

关 键 词：微波非线性电路 非线性散射函数 大信号网络测量系统 

分 类 号：TN385[电子电信—物理电子学]