How to obtain the transfer function for Passive Bandpass Filter1?


Joined Nov 13, 2010
Have you studied Bode plots yet? They show the magnitude & phase of a transfer function for a range of signal frequency.

The first step is to evaluate the entire expression, then separate and collect the real & imaginary parts. (That is a lot of complex algebra. I use a symbolic algebra engine -Maple- to avoid collecting piles of scribble paper.) Then use the real & imaginary expressions to calculate the magnitude & phase. (A lot more complex algebra.) At some point you will need to convert the capacitive reactance to a function of frequency.