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A novel method for extending the output power back-off range of an asymmetrical Doherty power amplifier
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Mingyu LI, Xiaobing CHENG, Zhijiang DAI, Kang ZHONG, Tianfu CAI, Chaoyi HUANG. A novel method for extending the output power back-off range of an asymmetrical Doherty power amplifier[J]. Frontiers of Information Technology & Electronic Engineering, 1998, -1(-1): .
@article{title="A novel method for extending the output power back-off range of an asymmetrical Doherty power amplifier",
author="Mingyu LI, Xiaobing CHENG, Zhijiang DAI, Kang ZHONG, Tianfu CAI, Chaoyi HUANG",
journal="Frontiers of Information Technology & Electronic Engineering",
volume="-1",
number="-1",
pages="",
year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.2200250"
}
%0 Journal Article
%T A novel method for extending the output power back-off range of an asymmetrical Doherty power amplifier
%A Mingyu LI
%A Xiaobing CHENG
%A Zhijiang DAI
%A Kang ZHONG
%A Tianfu CAI
%A Chaoyi HUANG
%J Journal of Zhejiang University SCIENCE C
%V -1
%N -1
%P
%@ 2095-9184
%D 1998
%I Zhejiang University Press & Springer
%DOI 10.1631/FITEE.2200250
TY - JOUR
T1 - A novel method for extending the output power back-off range of an asymmetrical Doherty power amplifier
A1 - Mingyu LI
A1 - Xiaobing CHENG
A1 - Zhijiang DAI
A1 - Kang ZHONG
A1 - Tianfu CAI
A1 - Chaoyi HUANG
J0 - Journal of Zhejiang University Science C
VL - -1
IS - -1
SP -
EP -
%@ 2095-9184
Y1 - 1998
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/FITEE.2200250
Abstract: In this paper, a novel method is proposed for extending the output power back-off (OPBO) range of the doherty power amplifier (DPA). This study reveals that the OPBO range of the DPA can be extended by tuning the output impedance of peaking stage away from infinity and changing the phase delay of the output matching network of the carrier power amplifier. Based on this theory, a large OPBO range high efficiency asymmetrical DPA working band from 1.55 GHz to 2.2 GHz (35% relative bandwidth) is designed to verify the proposed method. Experimental results show that the DPA operates from 1.6 GHz to 2.1 GHz. The range of the measured efficiency is 42.2%-52.1% in the OPBO state and 47%-62.7% in the saturation state. The OPBO range is 11.1-13.2 dB.
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