Current scaled Doherty amplifier for high efficiency and high linearity
Paper in proceedings, 2016

In this paper, a novel Doherty power amplifier (PA) design method that enables high efficiency and high linearity simultaneously is developed. The output combiner network parameters are solved to satisfy boundary conditions required for high efficiency, and linear gain and phase responses. The proposed method is experimentally verified by a 2.14 GHz prototype PA, fabricated using two identical 15 W GaN HEMT devices. For a 8.6 dB peak to average power ratio 10 MHz LTE signal, the PA presents an average power added efficiency of 40%, and an adjacent power leakage ratio of -41 dBc without any linearization.

Author

William Hallberg

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

MUSTAFA ÖZEN

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Christian Fager

GigaHertz Centre

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

Art. no. 7540185- 7540185

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/MWSYM.2016.7540185

ISBN

978-150900698-4

More information

Created

10/7/2017