Effective approximation of transfer characteristics of low frequency amplifier

Author

Novak, Martin ; Kosek, Miloslav ; Eichler, Jakub

Author_Institution

Dept. of Mechatron. & Tech. Inf., Tech. Univ. in Liberec, Liberec, Czech Republic

fYear

2014

fDate

9-10 Sept. 2014

Firstpage

229

Lastpage

232

Abstract

A detailed knowledge of amplifier transmission characteristics is important in many technical areas, for instance in commercial modeling systems as the Simulink. The paper shows that a good approximation of measured amplitude and phase characteristics can be made numerically by a rational function. If there is enough computation time, the complex transfer characteristic can be well approximated. Then zeros and poles can be found. Preliminary calculation reveals that the tested amplifier is not a minimum phase network.

Keywords

amplifiers; approximation theory; Simulink commercial modeling systems; amplifier transfer characteristic effective approximation; amplitude characteristics; low frequency amplifier; minimum phase network; phase characteristics; rational function; zeros and poles; Frequency measurement; Function approximation; Least squares approximations; Phase measurement; Poles and zeros; Polynomials; Approximation of characteristic; Hilbert transform; Minimum phase network; Rational function; Transmission function; Zeros and poles;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Electronics (AE), 2014 International Conference on

Conference_Location

Pilsen

ISSN

1803-7232

Print_ISBN

978-8-0261-0276-2

Type

conf

DOI

10.1109/AE.2014.7011708

Filename

7011708