Multi Carrier Modulator for Switch-Mode Audio Power Amplifiers

Andersen MAE, Knott A, Pfaffinger G. Multi Carrier Modulator for Switch-Mode Audio Power Amplifiers. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7439. Available from: https://aes.org/publications/elibrary-page/?id=14569

@inproceedings{Andersen2008_14569,
  author = {Andersen, Michael A.E. and Knott, Arnold and Pfaffinger, Gerhard},
  title = {{Multi Carrier Modulator for Switch-Mode Audio Power Amplifiers}},
  booktitle = {AES Convention 124},
  note = {Paper 7439},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14569}
}

TY  - CPAPER
TI  - Multi Carrier Modulator for Switch-Mode Audio Power Amplifiers
AU  - Andersen, Michael A.E.
AU  - Knott, Arnold
AU  - Pfaffinger, Gerhard
T2  - AES Convention 124
M1  - Paper 7439
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14569
PB  - Audio Engineering Society
LA  - en
AB  - 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.
ER  -