Butterworth filter is a type of filter whose frequency response is flat over the passband region. Low-pass filter (LPF) provides a constant output from DC up to a cutoff frequency f(H) and rejects all ...
To sketch the magnitude, we let assume the values 0, 1/RC, and . Then, as for and as To sketch the phase response, we use the result of the phase angle. Then, as as for as . The magnitude and phase ...