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Optimal Use of Some Classical Approximations in Filter Design

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1 Author(s)
Hercules G. Dimopoulos ; Technol. Educ. Inst. of Piraeus, Egaleo

The classical Butter worth, Chebyshev and Elliptic (Cauer) low-pass filter approximations can be used in the design of analog and IIR digital filters in such a way as to obtain passband, stopband and transition band optimized filters at no order cost. The exact analytical relationships for such an optimal deployment of these approximations are developed and presented in this paper and their use is demonstrated through design examples.

Published in:

IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:54 ,  Issue: 9 )