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Adaptive bias LINC transmitter design using EDA software for power efficiency improvement
Author(s) -
Lin Song,
Fathy Aly E.
Publication year - 2013
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20675
Subject(s) - baseband , predistortion , transmitter , amplifier , electronic engineering , linearity , computer science , software defined radio , electrical efficiency , signal (programming language) , rf power amplifier , radio transmitter design , power (physics) , electrical engineering , telecommunications , engineering , cmos , physics , channel (broadcasting) , quantum mechanics , programming language
In this article, a novel adaptive bias LInear amplification with Nonlinear Components (LINC) transmitter is introduced and analyzed. Predistortion is applied to the baseband signal and the bias of the high‐efficiency power amplifier is adaptively changed according to the envelope distribution of the baseband signal and the power amplifier itself. This novel transmitter can simultaneously achieve high average efficiency and linearity even with a high peak to average ratio signal. A comprehensive simulation framework has been developed using EDA software to validate this adaptive bias scheme with 16, 32, and 64 quadrature amplitude modulation signals. The simulation results show that this novel scheme can help in improving the average overall efficiency of the LINC transmitter by 15% while sustaining expected linearity. © 2012 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2013.