DocumentCode
1184079
Title
An approximation of a transfer function by one with lower Q´s
Author
Filanovsky, I.M. ; Stromsmoe, K.A.
Volume
27
Issue
7
fYear
1980
fDate
7/1/1980 12:00:00 AM
Firstpage
651
Lastpage
654
Abstract
This article presents a method for interchanging a portion of a transfer function with high 
-factor poles by a more complicated transfer function that can be realized with lower -factor stages. The limit for the possible -factor lowering is determined by the root locus for the poles of this high -portion. The approximation error can be reduced in a geometric progression by increasing the number of low -factor stages. A method for determining the poles and zeros of the approximating function is described and an example of interchange of a bandpass filter transfer function is given.
-factor poles by a more complicated transfer function that can be realized with lower -factor stages. The limit for the possible -factor lowering is determined by the root locus for the poles of this high -portion. The approximation error can be reduced in a geometric progression by increasing the number of low -factor stages. A method for determining the poles and zeros of the approximating function is described and an example of interchange of a bandpass filter transfer function is given.Keywords
Approximation methods; Bandpass filters; Network functions; Transfer functions; Approximation error; Circuits; Computer science; Filters; Notice of Violation; Poles and zeros; Polynomials; Q factor; Stability; Transfer functions;
fLanguage
English
Journal_Title
Circuits and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0098-4094
Type
jour
DOI
10.1109/TCS.1980.1084858
Filename
1084858
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