Characterization of linear power amplifiers for LTE applications
Paper in proceeding, 2018
This paper compares the performance of and analyzes the linearity metrics with different signals for two linear PAs: A single-ended class-AB PA and a linear Doherty PA (DPA). Both PAs utilize the 6 W GaN HEMT CGH40006P at a design frequency of 3 GHz for the class-AB PA and 3.5 GHz for the DPA. Different linearity metrics are studied for a 5-MHz spaced two-tone signal and a 5-MHz Long Term Evolution signal. The DPA has a power added efficiency of 40% whereas the class-AB PA shows 27% given a-40 dBc linearity constraint on the closest adjacent channel (ACPRi). The class-AB PA, however, exhibits better linearity in terms of ACPR2. It is additionally shown that the trends of the linearity metrics for the different signals differ for the two architectures.
AM-PM
class-AB
AM-AM
Doherty
IMD3
Author
William Hallberg
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Paolo Enrico De Falco
University of Bristol
MUSTAFA ÖZEN
University of California
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Christian Fager
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Zoya Popovic
University of Colorado at Boulder
Taylor Barton
University of Colorado at Boulder
PAWR 2018 - Proceedings 2018 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications
Vol. 2018-January 32-34
978-153861289-7 (ISBN)
2018 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications, PAWR 2018
Anaheim, USA,
Anaheim, USA,
Energy efficient millimeter wave transmitters
VINNOVA (2013-03942), 2013-11-25 -- 2017-02-28.
Subject Categories
Telecommunications
Control Engineering
Signal Processing
DOI
10.1109/PAWR.2018.8310060