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Design av FPGA-baserad PCM-till-PWM-modulator för klass D-audioförstärkare
Linköping University, Department of Electrical Engineering.
Linköping University, Department of Electrical Engineering.
2009 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Design of an FPGA-based PCM-to-PWM modulator for class D audio amplifier (English)
Abstract [sv]

 

I detta examensarbete har metoder för design av en FPGA-baserad PCM-till-PWM-modulator för klass D-audioförstärkare testats och utvärderats. Rapporten diskuterar med stöd av matematisk analys och simuleringar interpoleringsmetoder, pulsbreddsmodulering, samplingsprocesser och sigma-delta-modulatorer. Den föreslagna designen bygger på uppsampling, förkompensering, brusformning och pulsbreddsmodulering. Designens prestanda har verifierats genom simulering av modell och implementering i hårdvara.

 

Abstract [en]

 

This thesis experiments and evaluates methods for design of an FPGA based PCM-to-PWM modulator to be used in a class D audio amplifier. By utilizing mathematical analysis and simulations interpolation methods, pulse width modulation, cross point derivers and sigma delta modulators are discussed. The proposed design consists of upsampling, predistortion, noise shaping and pulse width modulation. The design has been validated through model based simulation and implementation in hardware.

 

Place, publisher, year, edition, pages
2009. , 125 p.
Keyword [sv]
PWM-modulator, PCM-till-PWM, Sigma-delta-modulation, Förkompensering
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-19488ISRN: LiTH-ISY-EX--09/4302--SEOAI: oai:DiVA.org:liu-19488DiVA: diva2:225326
Presentation
2009-06-12, Nollstället, Linköpings universitet, 581 83 LINKÖPING, Linköping, 10:15 (Swedish)
Uppsok
teknik
Supervisors
Examiners
Available from: 2009-06-30 Created: 2009-06-24 Last updated: 2009-06-30Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf