摘要
在正弦稳态情况下,无损均匀传输线终端开路、短路或接纯电抗时,传输线上会出现驻波。无损线的特性阻抗是纯电阻,所以负载匹配时沿线任一点的电压和电流同相位。PSpice中的无损线模型与有损线模型有很大区别,无损线的长度用归一化长度表示。应用PSpice可以对无损线进行时域仿真和频域仿真,时域仿真可以获得线上任一点的电压、电流、瞬时功率随时间变化的曲线,频域仿真可以获得线上任一点的频率特性。
In sinusoidal steady-state,if the terminal of lossless uniform transmission lines is open circuit or short circuit or reactance load,the voltage and current of the transmission lines are all standing waves.If the lossless uniform transmission lines and load are match,every point＇s voltage and current are same phase.Using the model of lossless uniform transmission lines in PSpice,the time characteristic and frequency characteristic should be obtained.
出处
《电气电子教学学报》
2008年第1期95-97,109,共4页
Journal of Electrical and Electronic Education
关键词
无损均匀传输线
PSPICE模型
时域特性
频率特性
lossless uniform transmission lines
PSpice model
time characteristic
frequency characteristic
