Narrow Band Pass Filter Circuit Diagram. Circuit diagram of lm741 opamp ic based band reject filter. The designing of a narrow bandpass filter is done for specific values of fc or q bw.
The frequency response of a narrow bandpass filter is shown in fig b. For simplification of design calculations each of c 1 and c 2 may be taken equal to c. The main features of this filter mainly include the following.
Generally a narrow bandpass filter uses several feedbacks.
The centre frequencies fc f l x f h the characteristics of a band stop filter are exactly opposite of the band pass filter characteristics. Generally the narrow bandpass filter is designed for specific values of centre frequency f c and q or f c and bw. A sample circuit diagram of a simple passive bandpass filter is shown below. It is a combination of the high pass filter and low pass filter.
