DocumentCode
2823052
Title
Modeling frequency responses by positive rational functions
Author
Lepschy, Antonio ; Mian, Gian Antonio ; Viaro, Umberto
Author_Institution
Dept. of Electron. & Inf., Padova Univ., Italy
fYear
1991
fDate
11-14 Jun 1991
Firstpage
2737
Abstract
The problem of finding a rational function of a real variable interpolating at given points (with suitable intersection numbers) while being everywhere positive is considered. The positivity requirement is essential, e.g. in modeling the square magnitude of a frequency response. This goal is achieved by resorting to a Hermite-type approach which allows one to obtain positive interpolating functions of minimum complexity by means of an efficient numerical procedure
Keywords
frequency response; interpolation; Hermite method; frequency response; interpolating functions; modeling; polynomial; positive rational functions; square magnitude; systems theory; transfer functions; Equations; Filters; Frequency response; Informatics; Interpolation; Lagrangian functions; Polynomials; Reduced order systems; Transfer functions;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN
0-7803-0050-5
Type
conf
DOI
10.1109/ISCAS.1991.176111
Filename
176111
Link To Document