Linearization of dual-input Doherty power amplifiers
Paper in proceedings, 2014

This paper studies the linearity of dual-input Doherty power amplifiers. We propose a linearization scheme that uses a combination of an efficiency-optimized static splitter and a vector-switched digital predistorter. The performance of the proposed linearization scheme is evaluated on a dual-input Doherty power amplifier operating at 2.0 GHz with 42 dBm peak output power. Experimental results show that the proposed linearization scheme achieves a normalized mean square error of-43.7 dB and an adjacent channel power ratio of-55.8 dBc with a power added efficiency of 42.4%.

digital predistortion

power amplifiers

linearization

dual-input Doherty

digital Doherty

Author

Jessica Chani Cahuana

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Per Landin

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

GigaHertz Centre

David Gustafsson

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

GigaHertz Centre

Thomas Eriksson

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

GigaHertz Centre

International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, INMMiC 2014

Art. no. 6815085- 6815085

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/INMMIC.2014.6815085

More information

Latest update

7/26/2019