They are used to enhance the gain of amplifier and realize the impedance matching, improve the current copying precision, decrease the tolerance of voltage gain.
它们用于提高放大电路的增益和实现输出阻抗匹配，提高电流复制精度，减小电压增益误差。
2
In this paper, the traditional cascode structure of CMOS LNA is considered as a two-stage amplifier and inter-stage matching network is introduced accordingly.