Question

Please show steps. Thank you

Design an identical cascade unit gain active RC low pass filter of order 4. The cut frequency for the filter is 800Hz. Use 1.0uF capacitors.

a) Draw the circuit and calculate the values of R.

b) Express the transfer function of the filter H(s).

c) Plot the Bode diagram of the frequency response of the filter.

d) Estimate the output voltage if the filter is excited with an input voltage vi(t) = sin(15000t)

e) What happens with the frequency response of the filter if we increase from order 4 to 6?

f) What is the limitation of this filter and what other filter can improve this one?

Answer 1