I have calculated a transfer function for a specific system (a low pass filter):
It seems to me that the standard way of plotting the frequency response of the filter is to use a Bode plot. Therefore I want to know how to do that in Matlab.
There is a function bodeplot in Matlab which for instance takes an argument calculated with
tf, which in turn takes a numerator and denominator.
I don't actually understand how I should use those functions with my already calculated formula above. Have I already calculated some part which could be done with the above mentioned Matlab functions?
So, how do I make a Bode plot from my transfer function, in Matlab?
Here is my current Matlab plot, which plots the frequency response (but not with dB on the y-scale):
f = 0:100000; R = 33e3; C = 220e-12; w = 2*pi*f; H_w = 1./(R.*C.*j.*w+1); xaxis = 0:100000; figure; semilogx(xaxis,abs(H_w));