1.前言理想有源器件构成的放大器,其输入与输出呈直线关系。如图1所示,增加理想器件的输入信号,在其输出端得到一个按线性比例增加的信号。然而,非理想的有源器件,一旦激励超出线性范围将呈现不同的特性,并且当输 1. INTRODUCTION The ideal active device amplifier, the input and output of a linear relationship. As shown in Figure 1, the input signal to the ideal device is increased, and at its output a linearly scaled signal is obtained. However, non-ideal active devices will exhibit different characteristics once the excitation is out of the linear range, and when the loser