DocumentCode :
1176726
Title :
High-frequency harmonic distortion in feedback amplifiers: analysis and applications
Author :
Palumbo, Gaetano ; Pennisi, Salvatore
Author_Institution :
Dipt. Elettrico Elettronico e Sistemistico, Univ. di Catania, Italy
Volume :
50
Issue :
3
fYear :
2003
fDate :
3/1/2003 12:00:00 AM
Firstpage :
328
Lastpage :
340
Abstract :
An approach for the evaluation of high-frequency harmonic-distortion factors in feedback systems is proposed and the results obtained are applied to feedback amplifiers. Under the assumption that transistors are not driven out of their linear operating regions, small-signal analysis and conventional algebra are exploited to derive understandable and compact expressions highly improving the comprehension of harmonic-distortion generation. The impact of the frequency compensation utilized (namely, dominant-pole or Miller technique) on linearity performance is evaluated and the high-frequency distortion properties of closed-loop single-stage and two-stage amplifiers are analyzed and compared. The accuracy of the analysis, also in view of the given applications, is confirmed through extensive simulations with Spectre on idealized models as well as on CMOS transistor-level circuits. Despite the approximated nature of the analytical models, predicted data are found in very close agreement with simulations in nearly all the frequency range of interest.
Keywords :
CMOS analogue integrated circuits; feedback amplifiers; frequency-domain analysis; harmonic distortion; nonlinear network analysis; CMOS transistor-level circuits; HF harmonic-distortion factors; Miller technique; Spectre; analytical models; closed-loop single-stage amplifiers; closed-loop two-stage amplifiers; dominant-pole technique; feedback amplifiers; frequency compensation; frequency-domain analysis; harmonic-distortion generation; high-frequency harmonic-distortion; linearity performance; nonlinear stages; simulations; small-signal analysis; transistor linear operating regions; Algebra; Analytical models; Circuit simulation; Feedback amplifiers; Frequency; Harmonic analysis; Harmonic distortion; Linearity; Performance analysis; Semiconductor device modeling;
fLanguage :
English
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
1057-7122
Type :
jour
DOI :
10.1109/TCSI.2003.808835
Filename :
1193015
Link To Document :
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