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
combiner
efficiency
power amplifiers
Författare
M Pamoin-Gonzalez
Universidad de Cantabria
MUSTAFA ÖZEN
GigaHertz Centrum
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
Cesar Sanchez Perez
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
Jessica Chani Cahuana
Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner
GigaHertz Centrum
Christian Fager
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
GigaHertz Centrum
2015 IEEE MTT-S International Microwave Symposium, IMS 2015
7166956
978-1-4799-8275-2 (ISBN)
Styrkeområden
Informations- och kommunikationsteknik
Ämneskategorier (SSIF 2011)
Elektroteknik och elektronik
DOI
10.1109/MWSYM.2015.7166956
ISBN
978-1-4799-8275-2