{"title":"Intermodulation distortion of class D audio amplifier using pulse density modulation","authors":"Svjetlana Kovačević, T. Pesic-Brdanin, J. Galic","doi":"10.1109/ZINC.2016.7513652","DOIUrl":null,"url":null,"abstract":"In this paper, an analysis of intermodulation distortion of class D audio amplifier is presented. Class D audio amplifier uses MOSFETs in switching mode is designed. The amplifier system contains a modulator and an output low-pass filter. Both modulation techniques, pulse width modulation and pulse density modulation, are used to drive class D amplifier stage. The influence of switching frequency on total second- and third-order intermodulation distortion products is examined. It is shown that for pulse density modulation, total intermodulation distortion remains within the permissible range of values.","PeriodicalId":125652,"journal":{"name":"2016 Zooming Innovation in Consumer Electronics International Conference (ZINC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 Zooming Innovation in Consumer Electronics International Conference (ZINC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ZINC.2016.7513652","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
In this paper, an analysis of intermodulation distortion of class D audio amplifier is presented. Class D audio amplifier uses MOSFETs in switching mode is designed. The amplifier system contains a modulator and an output low-pass filter. Both modulation techniques, pulse width modulation and pulse density modulation, are used to drive class D amplifier stage. The influence of switching frequency on total second- and third-order intermodulation distortion products is examined. It is shown that for pulse density modulation, total intermodulation distortion remains within the permissible range of values.
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