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传输线理论与阻抗匹配，高频PCB布线必备参考。-Transmission line impedance matching theory
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distance relay- finds impedance value of transmission line
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The Smith Chart is a fantastic tool for visualizing the impedance of a transmission line and antenna system as a function of frequency. Smith Charts can be used to increase understanding of transmission lines and how they behave from an impedance vie
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史密夫图表(Smith chart，又称史密斯圆图)是在反射系散平面上标绘有归一化输入阻抗（或导纳）等值圆族的计算图。是一款用于电机与电子工程学的图表，主要用于传输线的阻抗匹配上。该图由三个圆系构成，用以在传输线和某些波导问题中利用图解法求解，以避免繁琐的运算。一条传输线(transmission line)的电阻抗力(impedance)会随其长度而改变，要设计一套匹配(matching)的线路，需要通过不少繁复的计算程序，史密夫图表的特点便是省略一些计算程序。-Smith chart
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气体放电管、放电间隙、高频二极管、压敏电阻、瞬态二极管、晶闸管、高低通滤波器等元件根据不同频率、功率、传输速率、阻抗、驻波、插损、带宽、电压、电流等要求组合成电源线、天馈线、信号线系列电涌保护器（SPD）-Gas discharge tube, discharge gap, high-frequency diode, varistors, transient diode, thyristor tube, high and low pass filters and other components
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This paper describes the opportunity of implementing a model of a Mho type distance relay with a three zones by using MATLAB/SIMULINK package. SimPowerSystem toolbox was used for detailed modeling of distance relay, transmission line and fault simula
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基于补阻抗的传布输电线路故障测距研究，I-Spread based fault locating of transmission line impedance up, IEEE
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