Efficient Millimeter Wave Doherty PA Design Based on a Low-Loss Combiner Synthesis Technique
Journal article, 2017
We report on a record-efficient 30-GHz 21-dBm differential Doherty PA designed in a 130-nm SiGe process. The output network is designed using a recently developed combiner synthesis technique. This technique enables impedance inversion and parasitic compensation to be integrated in one compact network. As a result, the combiner loss is reduced with 0.3-0.5 dB compared with a conventional Doherty combiner. The measured collector and power-added efficiencies at 6-dB back-off level are 30% and 24.3%, respectively, which further validates the advantages of the design technique.
Doherty
SiGe
power amplifier
Author
MUSTAFA ÖZEN
GigaHertz Centre
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Narek Rostomyan
University of California at San Diego (UCSD)
Klaus Aufinger
Infineon Technologies
Christian Fager
GigaHertz Centre
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
IEEE Microwave and Wireless Components Letters
1531-1309 (ISSN) 15581764 (eISSN)
Vol. 27 12 1143-1145Areas of Advance
Information and Communication Technology
Infrastructure
Kollberg Laboratory
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/LMWC.2017.2763739