Asymmetric multilevel outphasing architecture for multi-standard transmitters
Name
Chung-2009-Asymmetric multilevel outphasing architecture for multi-standard transmitters.pdf
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428.95 KB
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Author(s)
Chung, SungWon
Godoy, Philip Andrew
Barton, Taylor W.
Huang, Everest W.
Perreault, David J.
Dawson, Joel L.
Date Issued
June 2009
Journal
IEEE Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009.
Publisher
Institute of Electrical and Electronics Engineers
Citation
SungWon Chung et al. “Asymmetric multilevel outphasing architecture for multi-standard transmitters.” Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE. 2009. 237-240. © 2009 Institute of Electrical and Electronics Engineers.
Version
Final published version
Abstract
We describe a new outphasing transmitter architecture in which the supply voltage for each PA can switch among multiple levels. It is based on a new asymmetric multilevel outphasing (AMO) modulation technique which increases overall efficiency over a much wider output power range than the standard LINC system while maintaining high linearity. For demonstration, the overall transmitter is simulated in a 65 nm CMOS process with HSUPA and WLAN signals. The simulation results show an efficiency improvement from 17.7% to 40.7% for HSUPA at 25.3 dBm output power and from 11.3% to 35.5% for WLAN 802.11g at 22.8 dBm while still meeting system linearity requirements.
Subjects
wideband phase modulator
Outphasing
Digital predistortion
LINC
MIT Department
Lincoln Laboratory
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Microsystems Technology Laboratories
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1109/RFIC.2009.5135530
