Active Electromagnetic Interference Cancelation for Automotive Switch-Mode Audio Power Amplifiers

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


    Recent trends in the automotive audio industry have shown the importance of active noise cancelation (ANC) for major improvements in mobile entertainment environments. These approaches target the acoustical noise in the cabin and superimpose an inverse noise signal to cancel disturbances. Electromagnetic interference between switch-mode audio power amplifiers and receivers show the same physical obstacle as the described ANC endeavors are targeting. The principle of active electromagnetic interference cancelation (AEC) is derived in this paper on a theoretical basis with verifications in simulation and experiment. The resulting switch-mode audio power amplifier of this experiment keeps its high efficiency and is able to deliver the signal with less than 0.1 % distortion, while improving the source of electromagnetic interference by 15 dB.
    Original languageEnglish
    Title of host publicationThe Proceedings of the AES 36th International Conference : Automotive Audio - Sound in Motion
    Publication date2009
    ISBN (Print)978-0-937803-69-1
    Publication statusPublished - 2009
    EventAES 36th International Conference: Automotive Audio - Sound in Motion - Dearborn, MI, United States
    Duration: 2 Jun 20094 Jun 2009
    Conference number: 36


    ConferenceAES 36th International Conference
    Country/TerritoryUnited States
    CityDearborn, MI


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