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

2013 ◽  
Author(s):  
Chuanhui Ma ◽  
Wensheng Pan ◽  
Youxi Tang ◽  
Chaojin Qing
Keyword(s):  
Power Amplifier ◽  
Lte Advanced ◽  
Doherty Power Amplifier ◽  
Advanced Applications

A Wideband Doherty Power Amplifier With 100 MHz Instantaneous Bandwidth for LTE-Advanced Applications

2013 ◽  
Vol 23 (11) ◽  
pp. 614-616 ◽  
Author(s):  
Chuanhui Ma ◽  
Wensheng Pan ◽  
Shihai Shao ◽  
Chaojin Qing ◽  
Youxi Tang
Keyword(s):  
Power Amplifier ◽  
Lte Advanced ◽  
Doherty Power Amplifier ◽  
Advanced Applications

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).

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

2013 ◽  
Vol 347-350 ◽  
pp. 1768-1772
Author(s):  
Chuan Hui Ma ◽  
Wen Sheng Pan ◽  
You Xi Tang ◽  
Chao Jin Qing
Keyword(s):  
Output Power ◽  
Power Amplifier ◽  
Continuous Wave ◽  
Average Output ◽  
Term Evolution ◽  
Lte Advanced ◽  
Adjacent Channel ◽  
Before And After ◽  
Doherty Power Amplifier

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.

Broadband Doherty Power Amplifier Based on Coupled Phase Compensation Network

2021 ◽  
pp. 1-1
Author(s):  
Xin Yu Zhou ◽  
Wing Shing Chan ◽  
Wenjie Feng ◽  
Xiaohu Fang ◽  
Tushar Sharma ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Phase Compensation ◽  
Doherty Power Amplifier
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