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在无线电工程中,常常会遇到各种线性无源四端网络,例如滤波器、传输线、变压器、移相器、衰减器等,对于这些线性四端网络来说,在分析、应用或设计时往往要求精确地知道它们的传递函数,就稳态分析来说,即幅频特性和相频特性.要想知道网络的传递函数,除了在线路结构简单和有规则时才可以用理论计算求得外,对于复杂或不规则的电路,最方便和最直接的还
In radio engineering, often encounter a variety of linear passive four-terminal network, such as filters, transmission lines, transformers, phase shifters, attenuators, etc. For these linear four-terminal network, in the analysis, application or design Often require accurate knowledge of their transfer function, in terms of steady-state analysis, that is, amplitude-frequency characteristics and phase-frequency characteristics.To get to know the network transfer function, in addition to the line structure is simple and rules can be used to calculate the theoretical For the complex or irregular circuit, the most convenient and most direct also