I am analyzing this continuous waveform amplifier circuit for a Microwave Motion Sensor. This high gain amplifier is recommended in the datasheet as the signal output of the sensor is extremely small (~1uV). I understand that they are using an op-amp integrator and an op-amp differentiator configurations, but what are the roles/purposes of the circled parts? Could someone please kindly explain it to me as my circuit analysis is a little bit rusty.
Electronic – the purpose of these elements in this circuit
amplifiercapacitorimpedanceoperational-amplifierphase
Best Answer
Figure 1. Waveform amplifier.