Design of linear and efficient power amplifiers by generalization of the Doherty theory
Paper in proceeding, 2017
The Doherty power amplifier (PA) is now established as one the most widely adopted architectures for enhancement of energy efficiency in wireless communication transmitters. More than 80 years after its invention, most of today's implementations still rely on the original circuit topology. This paper describes a new Doherty solution continuum that is revealed when the original λ/4 combiner is replaced by a generic, analytically derived, lossless combiner network. As a result, novel Doherty PA solutions that in practice are both more efficient and more linear are enabled. A variety of practical design examples are included to illustrate how the presented techniques can enable enhanced performance in both traditional and emerging mm-wave 5G wireless communication transmitter applications.
gallium-nitride
linearity
Power amplifiers
energy efficiency
wireless communication
Author
Christian Fager
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
GigaHertz Centre
William Hallberg
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
MUSTAFA ÖZEN
GigaHertz Centre
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
K. Andersson
Ericsson
Koen Buisman
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
GigaHertz Centre
David Gustafsson
Ericsson
Proceedings of the 2017 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications
29-32 7875565
978-150903457-4 (ISBN)
2017 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications, PAWR 2017
Phoenix, USA,
Phoenix, USA,
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/PAWR.2017.7875565