Multi Carrier Modulator for Switch-Mode Audio Power Amplifiers

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    While switch-mode audio power amplifiers allow compact implementations and high output power levels due to their high power efficiency, they are very well known for creating electromagnetic interference (EMI) with other electronic equipment, in particular radio receivers. Lowering the EMI of switch-mode audio power amplifiers while keeping the performance measures to excellent levels is therefore of high general interest. A modulator utilizing multiple carrier signals to generate a two level pulse train will be shown in this paper. The performance of the modulator will be compared in simulation to existing modulation topologies. The lower EMI as well as the preserved audio performance will be shown in simulation as well as in measurement results on a prototype.
    Original languageEnglish
    Title of host publication124th Audio Engineering Society Convention
    VolumePreprint no. 7439
    Publication date2008
    ISBN (Print)9780-937803-62-2
    Publication statusPublished - 2008
    Event124th Audio Engineering Society Convention - Amsterdam, Netherlands
    Duration: 17 May 200820 May 2008
    Conference number: 124


    Conference124th Audio Engineering Society Convention
    Internet address


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