Energy-efficient doherty power amplifier MMIC and beamforming-oriented digital predistortion for 5G massive MIMO application

2017 ◽  
Author(s):  
Wenhua Chen ◽  
Guansheng Lv ◽  
Xin Liu ◽  
Zhenghe Feng
Keyword(s):  
Power Amplifier ◽  
Energy Efficient ◽  
Massive Mimo ◽  
Digital Predistortion ◽  
Doherty Power Amplifier

A 2.5GHZ-2.7GHz Unsymmetrical Doherty Power Amplifier with Digital Predistortion for LTE-Advanced Applications

2013 ◽  
Vol 760-762 ◽  
pp. 546-550 ◽  
Author(s):  
Wen Sheng Pan ◽  
Chuan Hui Ma ◽  
Shi Hai Shao ◽  
You Xi Tang
Keyword(s):  
Output Power ◽  
Power Amplifier ◽  
Power Efficiency ◽  
Continuous Wave ◽  
Digital Predistortion ◽  
Average Output ◽  
Lte Advanced ◽  
Saturation Power ◽  
Doherty Power Amplifier ◽  
Better Than

An unsymmetrical GaN based Doherty power amplifier (DPA) operating from 2.5GHz to 2.7GHz is presented in this paper. To achieve a good tradeoff among the output power, efficiency and bandwidth, the ladder-type multisection output matching networks are optimized for the carrier amplifier and the peaking amplifier, respectively. Measured with continuous wave (CW) signal, the broadband DPA provides more than 49dBm saturation power in the operating band. The drain efficiency is greater than 44% over 7dB back-off power. For a LTE-Advanced signal with 100MHz bandwidth, the drain efficiency is higher than 42% at an average output power of 41dBm, along with an adjacent channel leakage ratio (ACLR) of better than-49.9dBc after digital predistortion (DPD).

Weighted Polynomial Digital Predistortion for Low Memory Effect Doherty Power Amplifier

2007 ◽  
Vol 55 (5) ◽  
pp. 925-931 ◽  
Author(s):  
Sungchul Hong ◽  
Young Yun Woo ◽  
Jangheon Kim ◽  
Jeonghyeon Cha ◽  
Ildu Kim ◽  
...  
Keyword(s):  
Memory Effect ◽  
Power Amplifier ◽  
Digital Predistortion ◽  
Doherty Power Amplifier
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