NUMERICAL DISTORTION ANALYSIS OF LOG-DOMAIN FILTERS BASED ON HARMONIC BALANCE TECHNIQUE

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FARSHIDI E.; SAYEDI S.M.

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Journal Paper

Paper Information

Journal: JOURNAL OF COMPUTATIONAL METHODS IN ENGINEERING (ESTEGHLAL) Year:2009 | Volume:28 | Issue:1 Page(s): 1-16

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Information Journal Paper

Title

NUMERICAL DISTORTION ANALYSIS OF LOG-DOMAIN FILTERS BASED ON HARMONIC BALANCE TECHNIQUE

Author(s)

FARSHIDI E. | SAYEDI S.M. | Issue Writer Certificate

Keywords

HARMONIC BALANCEQ3

FILTERQ3

LOG DOMAINQ3

DISTORTION ANALYSISQ3

TOTAL HARMONIC DISTORTIONQ3

COMPANDING CIRCUITSQ3

Abstract

In this paper, the HARMONIC BALANCE technique is used to develop a new computer-aided design method for analyzing nonlinear behavior of LOG DOMAIN FILTERs. Drawing upon the small signal linear model of circuits and power series expansion, previous methods commonly used the second and third terms of the series to analyze distortion. Contrary to conventional linear FILTERs. log-domain FILTERs have large signal behavior and, hence, fail to evaluate their distortions accurately. Compared with the techniques proposed elesewhere, the method proposed in this work, which is based on frequency domain analysis, is not limited by the large signal behavior of LOG DOMAIN FILTERs, and is thus capable of evaluating distortions of log-domain FILTERs more accurately, in a greater number of harmonics, and for circuits with higher complexity levels.

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