An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers

We investigate the influence of two important practical design parameters on total harmonic distortion (THD) for the design of low-voltage (0.9–1.4 V) low-power analog Class-D amplifiers: the linearity of the carrier waveform and the impedance of the output stage. We show that the carrier nonlineari...

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Main Authors:	Tan, Meng Tong, Chang, Joseph Sylvester, Chua, Hock Chuan, Gwee, Bah Hwee
Other Authors:	School of Electrical and Electronic Engineering
Format:	Article
Language:	English
Published:	2009
Subjects:	DRNTU::Engineering::Electrical and electronic engineering
Online Access:	https://hdl.handle.net/10356/90577 http://hdl.handle.net/10220/4638
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Institution:	Nanyang Technological University
Language:	English

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spelling	sg-ntu-dr.10356-905772020-03-07T14:02:37Z An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers Tan, Meng Tong Chang, Joseph Sylvester Chua, Hock Chuan Gwee, Bah Hwee School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering We investigate the influence of two important practical design parameters on total harmonic distortion (THD) for the design of low-voltage (0.9–1.4 V) low-power analog Class-D amplifiers: the linearity of the carrier waveform and the impedance of the output stage. We show that the carrier nonlinearity results in THD and propose a novel mathematical analysis method to model the nonlinearity. We recommend a range of the parameter that describes the carrier nonlinearity and that results in a good compromise to the dynamic range of the pulsewidth modulator of the Class-D amplifier. We show that the impedance of the output stage has little effect on THD. We verify our analyses by means of MATLAB and HSPICE computer simulations, and on the basis of practical measurements. Published version 2009-06-22T04:53:41Z 2019-12-06T17:50:11Z 2009-06-22T04:53:41Z 2019-12-06T17:50:11Z 2003 2003 Journal Article Tan, M. T., Chang, J. S., Chua, H. C., & Gwee, B. H. (2003). An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers. IEEE Transactions on Circuits and Systems-I: Fundamental Theory and Applications, 50(10), 1304-1315. 1057-7122 https://hdl.handle.net/10356/90577 http://hdl.handle.net/10220/4638 10.1109/TCSI.2003.817770 en IEEE transactions on circuits and systems-I: fundamental theory and applications © 2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site. 12 p. application/pdf
institution	Nanyang Technological University
building	NTU Library
country	Singapore
collection	DR-NTU
language	English
topic	DRNTU::Engineering::Electrical and electronic engineering
spellingShingle	DRNTU::Engineering::Electrical and electronic engineering Tan, Meng Tong Chang, Joseph Sylvester Chua, Hock Chuan Gwee, Bah Hwee An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers
description	We investigate the influence of two important practical design parameters on total harmonic distortion (THD) for the design of low-voltage (0.9–1.4 V) low-power analog Class-D amplifiers: the linearity of the carrier waveform and the impedance of the output stage. We show that the carrier nonlinearity results in THD and propose a novel mathematical analysis method to model the nonlinearity. We recommend a range of the parameter that describes the carrier nonlinearity and that results in a good compromise to the dynamic range of the pulsewidth modulator of the Class-D amplifier. We show that the impedance of the output stage has little effect on THD. We verify our analyses by means of MATLAB and HSPICE computer simulations, and on the basis of practical measurements.
author2	School of Electrical and Electronic Engineering
author_facet	School of Electrical and Electronic Engineering Tan, Meng Tong Chang, Joseph Sylvester Chua, Hock Chuan Gwee, Bah Hwee
format	Article
author	Tan, Meng Tong Chang, Joseph Sylvester Chua, Hock Chuan Gwee, Bah Hwee
author_sort	Tan, Meng Tong
title	An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers
title_short	An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers
title_full	An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers
title_fullStr	An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers
title_full_unstemmed	An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers
title_sort	investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-d amplifiers
publishDate	2009
url	https://hdl.handle.net/10356/90577 http://hdl.handle.net/10220/4638
_version_	1681036644852957184

An investigation into the parameters affecting total harmonic distortion in low-voltage low-power class-D amplifiers

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