Bode Plot of Low Pass Filter and High Pass Filter

How to plot the bode plot of a low pass filter and a second order high pass filter with the gain and frequency based on the value entered by the GUI user.

Answer 1

[Victor Wetzel]

You have two solutions here:

1: Implementing the explicit formula of your filter, and do a simple plot. It should look quite like:

w = [20: 10: 20000];
filter = 1/(1 + w^2);
plot(w, 20*log10(filter) );

2: design a filter and use the 'bode' function. The help file of this function might be more helpfull. If you just type 'bode' in the console, you'll see an example

[khoirul wakiah nasution]

Thanks for the answer

Answer 2

[poovaneshvarri nadunchalean]

• Given a Low-pass RC filter with R = 3 kΩ, C = 0.5 µF, Write out the filter’s transfer function and Draw a bode diagram of the system.

Answer 3

[mahmoud]

w = [20: 10: 20000];

filter = 1/(1 + w^2);

plot(w, 20*log10(filter) );