Bilinear Transformation - Properties & Design Steps - IIR Filter Design

Bilinear Transformation:

It is a mapping method used to design IIR digital filter from an analog filter.

Properties:

The jΩ axis in the s-plane maps onto the unit circle of the z-plane

The left half of the s-plane maps into the inside of the unit circle of the z-plane

The right half of the s-plane maps into the outside of the unit circle of the z-plane

            



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