- Negative infinity in s-plane ---- Origin in z-plane
- Imaginary axis in s-plane ----Unit circle in z-plane
- Positive infinity in s-plane ---- Positive infinity in z-plane
That also means:
- left half s-plane ---- Inside the unit circle in z-plane
- Right half s-plane ---- outside the unit circle in z-plane
- Imaginary axia in s-plane ---- On unit circle in z-plane
- H(s) is BIBO stable if all poles are on the left half plane
- H(z) is BIBO stable if all poles are insde UC
- Fourier transform in s-plane is evaluated along jw-axis
- Fourier transform in z-plane is evaluated along UC
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