Predistortion of a Bidirectional Cuk Audio Amplifier.

Thomas Hagen Birch, Dennis Nielsen, Arnold Knott, Michael A. E. Andersen

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Some non-linear amplifier topologies are capable of providing a larger voltage gain than one from a DC source, which could make them suitable for various applications. However, the non-linearities introduce a significant amount of harmonic distortion (THD). Some of this distortion could be reduced using predistortion. This paper suggests linearizing a nonlinear bidirectional Cuk audio amplifier using an analog predistortion approach. A prototype power stage was built and results show that a voltage gain of up to 9 dB and reduction in THD from 6% down to 3% was obtainable using this approach.
Original languageEnglish
Title of host publicationProceedings of the 137th AES Convention
Number of pages10
PublisherAudio Engineering Society
Publication date2014
Publication statusPublished - 2014
EventAES 137th Convention - Los Angeles, CA, United States
Duration: 9 Oct 201412 Oct 2014


ConferenceAES 137th Convention
CountryUnited States
CityLos Angeles, CA

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