IIR Filter Design Electrical Engineering (EE) Notes | EduRev

Digital Signal Processing

Electrical Engineering (EE) : IIR Filter Design Electrical Engineering (EE) Notes | EduRev

The document IIR Filter Design Electrical Engineering (EE) Notes | EduRev is a part of the Electrical Engineering (EE) Course Digital Signal Processing.
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IIR Filter Design

  •  Butterworth, chebyshev & elliptic techniques.
  •  Impulse invariance and bilinear transformation methods are used for translating splane singularities of analog filter to z-plane.
  • Frequency transformations are employed to convert LP digital filter design into HP, BP and BR digital filters.
  •  All pass filters are employed to alter only the phase response of IIR digital filter to approximate a linear phase response over the pass band.

The system function = H(s)

The frequency transfer function = H(j Ω ) = H(s) / s=j Ω

The power transfer function =|H ( j Ω)2=H(j Ω ) H*(j Ω ) = H(s) H(-s) / s=j Ω

To obtain the stable system, the polse that lie in the left half of the s-plane are assigned to 
H(s).

 

 

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