On the construction of transitional filter nomographs |
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| Authors: | Claude S Lindquist Celestino A Corral |
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| Institution: | a University of Miami, P.O. Box 24-8294, Miami, FL 33124, USA
b Motorola, Inc. 1500 Gateway Blvd., M/S 71, Boynton Beach, FL, 33467, USA |
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| Abstract: | The construction of nomographs for transitional classical filters is described. Gain functions of classical filters are related to filter requirements resulting in a formulation for the general gain nomograph. The transitional filters that are products of approximating polynomials are incorporated into the general gain nomograph resulting in transitional filter nomographs that are sums of the individual nomographs. Nomographs for transitional filters using alternative forms where poles are interpolated are also considered. The resulting nomographs allow for quick optimization of transitional filter frequency response in many cases. Design examples are submitted and discussed. The proposed transitional filter nomographs provide the engineer with increased insight into the selection of classical transitional filters with optimum frequency response. |
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