Discrete-Time Bode Plot – Geometric Interpretation
How are frequency responses related to the positions of zeros and poles of a discrete-time linear system?
Try it by yourself, for
$$
H(z)=\frac{0.05517241-0.01050903z^{-1}-0.01138478z^{-2}+0.05429666z^{-3}}
{1-2.62889984z^{-1}+2.51395731z^{-2}-0.86316366z^{-3}}
$$
The current frequency point is \(z=e^{j\phi}\) on the unit circle.
Zero-pole plot on the z-plane
Magnitude and phase versus \(\phi\)
Comments