I have been trying to solve the following problem:
Design a band pass filter with 2nd order Chebyshev filters: Low-pass to high-pass (both 2nd order in cascade.) Find the component values (resistors and capacitors.) Use Matlab.
-> Ripple[dB] = 3 -> flp = 10kHz -> fhp = 3.2kHz
From the following code I have been able to find the transfer function for the low-pass:
n = 2; ripple = 3; [z,p,k] = cheb1ap(n,ripple) H = zpk(z,p,k) bode(H), grid on, shg
The output transfer function for the low pass filter:
I only know some basic equations:
Low-pass 2nd order
High-pass 2nd order
My real trouble is knowing the equations I can use to find out the resistor and capacitor values to implement the circuit in a lab. What would you recommend?
Are there Matlab functions I can use for the highpass?