具有两个与外电路连接端口的网络称为双端口网络，它的一个端口连至电源，称为输入端；另一个端口连至负载，称为输出端。
传统的反馈环路增益仿真方法基于有源双端口网络，分析复杂，不利于快速得到环路的定量分析。
Traditional loop gain simulation method is based on two-port network models, which is complex to analysis and it is not suitable to get quantitative analysis of the loop gain fast.
文中提供全部网络元件值的估算和预测闭环宽频带增益、带宽和双端口的匹配值。
Thepaper presented leads to estimates of all network element values and predicts theclosed loop broad band gain, bandwidth, and quality of both ports.
传输线可以看作集中参数二端口网络的级联，其数学模型—电报方程是一阶双曲型偏微分方程组。
Telegraph equations, can be looked as cascade connection of two-port network of lumped circuit of transmission line, is a hyperbolic partial differential equations.
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