The other is Active-RC filter used in RF receiver, it utilizes folded cascode operational amplifier. In order to improve stability of active filter, buffer and miller effect capacitor are added.

• 另一种是应用于射频接收机的Active-RC滤波器,其中的运算放大器采用折叠式共源共栅结构,使用了缓冲器和密勒效应电容进行频率补偿,提高了滤波器的稳定性。