运用双口[y]参数求得三材管的不定导纳矩阵后,就能与处理无源网络一样,可以用观察法写出放大电路的节点导纳矩阵。由此矩阵能进一步推得放大电路双口[y]参数,并可用双口[y]参数求特性参数的公式来计算放大电路的主要性能指标。 本文介绍一种简易方法,用视察法写出放大电路的节点导纳矩阵作为输入到计算机的初始数据,借助计算机来计算放大器的主要性能指标。 By using the dual-port [y] parameter to obtain the triad admittance matrix, the node admittance matrix of the amplifying circuit can be written in the same way as the passive network. Therefore, the matrix can further deduce the dual-port [y] parameter of the amplifying circuit and can calculate the main performance index of the amplifying circuit by using the formula of double-port [y] parameter to obtain the characteristic parameter. This article describes a simple method, using the inspection method to write the node admittance matrix amplification circuit input to the computer as the initial data, using the computer to calculate the main performance indicators of the amplifier.