Open AccessTwo‐dimensional crest factor reduction for performance improvement of concurrent dual‐band power amplifiers
Author(s) -
Chen Xiaofan,
Zhang Silong,
Chen Wenhua
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.1650
Subject(s) - crest factor , predistortion , amplifier , reduction (mathematics) , power (physics) , crest , dual (grammatical number) , electronic engineering , electrical engineering , computer science , engineering , physics , mathematics , telecommunications , bandwidth (computing) , cmos , optics , art , geometry , literature , quantum mechanics
A two‐dimensional crest factor reduction (2D‐CFR) is proposed to improve the performance of concurrent dual‐band power amplifiers (PAs). Experimental measurements are performed on a 1.9–2.6 GHz concurrent dual‐band LTE PA by using the proposed 2D‐CFR and conventional 1D‐CFR, respectively. Measured results after 2D digital predistortion (2D‐DPD) show that the output power with the proposed 2D‐CFR is increased by 10%, the efficiency is improved from 28.1 to 30.6% and the error vector magnitude is reduced from 3.46 to 2.67%, indicating a significant performance improvement.