Abstract
This text gives an overview of critical technology challenges for high efficiency power amplifiers used in future mobile broadband systems. Implementation aspects of efficient wideband multi-band transmitters are discussed. Simulations of and design implications for a multi-band 1.8–2.7 GHz high efficiency power amplifier using GaN transistors are presented. Finally possible transmitter architectures with potential of meeting ambitious efficiency, flexibility and frequency range goals are briefly analyzed.
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- 1.
This is hereafter denoted as pulsed modulation (PM).
- 2.
This distortion is generally referred to as quantization noise.
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Acknowledgements
The authors would like to thank Daniel Ȧkesson (Ericsson AB) for the third order Doherty simulations and Hossein Mashad Nemati, Mattias Thorsell and Thomas Eriksson at Chalmers University of Technology for proof-reading this text.
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Berglund, B., Gustavsson, U., Thorebäck, J., Lejon, T. (2010). RBS High Efficiency Power Amplifier Research – Challenges and Possibilities. In: Roermund, A., Casier, H., Steyaert, M. (eds) Analog Circuit Design. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3083-2_14
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DOI: https://doi.org/10.1007/978-90-481-3083-2_14
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