Outphasing combiner synthesis from transistor load pull data
Paper i 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
Författare
M Pamoin-Gonzalez
Universidad de Cantabria
MUSTAFA ÖZEN
Gigahertzcentrum
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
Cesar Sanchez Perez
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
Jessica Chani Cahuana
Gigahertzcentrum
Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk
Christian Fager
Gigahertzcentrum
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
2015 IEEE MTT-S International Microwave Symposium, IMS 2015
7166956
978-1-4799-8275-2 (ISBN)
Styrkeområden
Informations- och kommunikationsteknik
Ämneskategorier
Elektroteknik och elektronik
DOI
10.1109/MWSYM.2015.7166956
ISBN
978-1-4799-8275-2