On the Accurate Calculation of Miller Effect

Author

Gutierrez-Cortés, E. ; Báez-López, D.

Author_Institution

Dept. de CEFI-Ingenieria Electronica, Univ. de las Americas, Puebla

fYear

2007

fDate

26-28 Feb. 2007

Firstpage

23

Lastpage

23

Abstract

Miller´s theorem has proven its usefulness in analyzing feedback amplifiers. However, it does not provide accurate results for either gain, input and output impedances. This paper presents an alternative analysis of a feedback amplifier by using the extra element theorem (EET) and the unified feedback model (UFM). The results obtained are accurate when compared to direct analysis. The paper presents an introduction to the EET and the UFM. Then an analysis of gain, input and output impedance of a capacitive feedback amplifier using both the EET and the UFM is shown. The accuracy of both algorithms is demonstrated by comparison to the results obtained by direct analysis

Keywords

electric impedance; feedback amplifiers; frequency response; EET; Miller´s theorem; UFM; capacitive feedback amplifier; extra element theorem; impedance; unified feedback model; Algorithm design and analysis; Capacitors; Circuit analysis; Feedback amplifiers; Feedback circuits; Frequency response; Impedance; Input variables; Output feedback; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Communications and Computers, 2007. CONIELECOMP '07. 17th International Conference on

Conference_Location

Cholula, Puebla

Print_ISBN

0-7695-2799-X

Electronic_ISBN

0-7695-2799-X

Type

conf

DOI

10.1109/CONIELECOMP.2007.27

Filename

4127263