Design of Unsymmetrical Doherty Power Amplifier for 460MHz LTE-Advanced Applications
- 10.2991/isccca.2013.100How to use a DOI?
- unsymmetrical, Doherty power amplifier, output matching networks, LTE-Advanced
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.
- © 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 - 10.2991/isccca.2013.100 ID - Ma2013/02 ER -