Digital Predistortion for Dual-Input Doherty Amplifiers
Paper in proceeding, 2012
This paper presents a digital predistortion technique
for dual-input Doherty power amplifiers. The proposed
technique utilizes both RF inputs of the main and peak
amplifiers in the digital predistorter. The effectiveness of
the resulting dual-input predistorter is evaluated on a twoway
Doherty amplifier operating at 2.14 GHz with 53.5 dBm
peak output power. The experimental results demonstrate
that the dual-input approach outperforms the conventional
single-input predistortion technique by ∼3 dB in terms of
adjacent channel leakage ratio.
Author
Haiying Cao
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
GigaHertz Centre
Jawad Qureshi
Delft Institute of Microelectronics and Submicrontechnology - DIMES
Thomas Eriksson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
GigaHertz Centre
Christian Fager
GigaHertz Centre
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Leo de Vreede
Delft Institute of Microelectronics and Submicrontechnology - DIMES
RWW 2012 - Proceedings. 2012 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications, PAWR 2012. Santa Clara, CA, 15-18 January 2012
45-48 6174934
978-145771154-1 (ISBN)
Areas of Advance
Information and Communication Technology
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/PAWR.2012.6174934
ISBN
978-145771154-1