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
Link To Document :
