Outphasing combiner synthesis from transistor load pull data
Paper in proceedings, 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 and Antenna Systems, Communication Systems

Christian Fager

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

2015 IEEE MTT-S International Microwave Symposium, IMS 2015

7166956

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

More information

Latest update

2/28/2018