Sensitivities of Band-Edge Selectivities

Authors:
Celestino A. Corral;Claude S. Lindquist;Peter B. Aronhime
Affiliations:
Motorola Land Mobile Product Sector, 8000 W. Sunrise Blvd. Plantation, FL 33322 eccØ18@email.mot.com;Department of Electrical & Computer Engineering, University of Miami, P.O. Box 248294 Coral Gables, FL 33124;Electrical Engineering Department, University of Louisville, Louisville, KY 40292
Venue:
Analog Integrated Circuits and Signal Processing - Special issue: papers from the 40th midwest symposium
Year:
1999

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Abstract

Many filters have a band-edge selectivity (BES) that is a function of parameters other than filter order. In these cases, the band-edge selectivity can be maximized without increasing the order of the filter. However, in increasing BES, we must keep track of the sensitivity of BES to the parameters. In this paper, we provide sensitivities of BES to filter parameters for a variety of classical filters, these being described by rational functions approximating the ideal filter magnitude response. The results are useful in the design of such filters.