Outphasing combiner synthesis from transistor load pull data
Paper in proceeding, 2015
A novel load-pull based outphasing combiner synthesis approach is developed. The design technique is based on the derivation of combiner network parameters in terms of the optimal load impedances at the peak power level and a pre-defined back-off level. The combiner is then synthesized using transmission lines or lumped element networks. The design technique is verified in a 30 W GaN HEMT outphasing transmitter demonstrator. The prototype presents a power-added efficiency of 50% at 2.1 GHz with 9 dB peak-to-average power ratio (PAPR) 20 MHz LTE signals. The related measured adjacent channel leakage ratio is -51 dBc using a low complexity digital pre-distortion linearization algorithm.
Outphasing
efficiency
power amplifiers
combiner
Author
M Pamoin-Gonzalez
University of Cantabria
MUSTAFA ÖZEN
GigaHertz Centre
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Cesar Sanchez Perez
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Jessica Chani Cahuana
GigaHertz Centre
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Christian Fager
GigaHertz Centre
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
2015 IEEE MTT-S International Microwave Symposium, IMS 2015
7166956
978-1-4799-8275-2 (ISBN)
Areas of Advance
Information and Communication Technology
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/MWSYM.2015.7166956
ISBN
978-1-4799-8275-2