Proceedings of the 2nd International Symposium on Computer, Communication, Control and Automation (ISCCCA 2013)

Design of Unsymmetrical Doherty Power Amplifier for 460MHz LTE-Advanced Applications

Authors
Chuanhui Ma, Wensheng Pan, Youxi Tang, Chaojin Qing
Corresponding Author
Chuanhui Ma
Available Online February 2013.
DOI
https://doi.org/10.2991/isccca.2013.100How to use a DOI?
Keywords
unsymmetrical, Doherty power amplifier, output matching networks, LTE-Advanced
Abstract

An unsymmetrical Doherty power amplifier (DPA) at 460MHz is presented in this paper. The carrier and peaking amplifier of the DPA, which base on two equal-sized devices, are matched with different networks to mitigate the performance degradation caused by the limited load modulation. Measured with continuous wave (CW), the unsymmetrical DPA saturates at an output power of 49.2dBm and achieves a drain efficiency of 51% at 6dB back-off. Using a one-carrier long term evolution advanced (LTE-Advanced) signal with 20MHz bandwidth, the unsymmetrical DPA exhibits a drain efficiency of 48.7% at an average output power of 42.1dBm, along with adjacent channel leakage ratio (ACLR) of -34.1dBc and -53.3dBc before and after digital pre-distortion (DPD), respectively.

Copyright
© 2013, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2nd International Symposium on Computer, Communication, Control and Automation (ISCCCA 2013)
Series
Advances in Intelligent Systems Research
Publication Date
February 2013
ISBN
978-90-78677-63-5
ISSN
1951-6851
DOI
https://doi.org/10.2991/isccca.2013.100How to use a DOI?
Copyright
© 2013, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Chuanhui Ma
AU  - Wensheng Pan
AU  - Youxi Tang
AU  - Chaojin Qing
PY  - 2013/02
DA  - 2013/02
TI  - Design of Unsymmetrical Doherty Power Amplifier for 460MHz LTE-Advanced Applications
BT  - Proceedings of the 2nd International Symposium on Computer, Communication, Control and Automation (ISCCCA 2013)
PB  - Atlantis Press
SP  - 407
EP  - 410
SN  - 1951-6851
UR  - https://doi.org/10.2991/isccca.2013.100
DO  - https://doi.org/10.2991/isccca.2013.100
ID  - Ma2013/02
ER  -