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dc.contributor.author
Chierchie, Fernando
dc.contributor.author
Aase, Sven Ole
dc.date.available
2017-01-24T14:08:13Z
dc.date.issued
2015-10
dc.identifier.citation
Chierchie, Fernando; Aase, Sven Ole; Volterra Models for Digital PWM and Their Inverses; Institute Of Electrical And Electronics Engineers; Ieee Transactions On Circuits And Systems I-regular Papers; 62; 10; 10-2015; 2606-2616
dc.identifier.issn
1549-8328
dc.identifier.issn
1558-0806
dc.identifier.uri
http://hdl.handle.net/11336/11761
dc.description.abstract
In an all-digital class-D audio amplifier each signal sample is mapped into a pulse using digital pulse-width-modulation (PWM), and this intrinsically generates nonlinear distortion. This article develops discrete-time Volterra models for digital PWM. The analysis considers two types of demodulation filter, an ideal filter which provides insight into the behavior of the PWM itself, and an analog low-order demodulator filter which models the interaction of the PWM mapping with a real demodulator filter. Symmetric, trailing edge, and leading edge PWM are considered. Using the Volterra models, formulae for the inverse systems are developed. This facilitates digital precompensation of the above mentioned distortion by digitally pre-filtering the modulating signal prior to the PWM mapping. This method is first simulated and compared to pseudo-natural PWM, a well-known method for PWM distortion reduction. Moreover, the method is verified by real measurements from a physical realization of the prefilter setup using real-time digital signal processing.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Institute Of Electrical And Electronics Engineers
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Nonlinear Distortion
dc.subject
Power Amplifiers
dc.subject
Pulse-Width Modulation
dc.subject.classification
Ingeniería Eléctrica y Electrónica
dc.subject.classification
Ingeniería Eléctrica, Ingeniería Electrónica e Ingeniería de la Información
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Volterra Models for Digital PWM and Their Inverses
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-01-19T19:56:35Z
dc.journal.volume
62
dc.journal.number
10
dc.journal.pagination
2606-2616
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Chierchie, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto de Investigación En Ingeniería Eléctrica; Argentina. Universidad Nacional del Sur. Departamento de Ingenieria Electrica y de Computadoras; Argentina
dc.description.fil
Fil: Aase, Sven Ole. University of Stavanger. Department of Electrical Engineering and Computer Science; Noruega
dc.journal.title
Ieee Transactions On Circuits And Systems I-regular Papers
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://ieeexplore.ieee.org/document/7277163/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1109/TCSI.2015.2476299
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