Journal of Zhejiang University

ENGINEERING Information Technology & Electronic Engineering 2026 Vol.27 No.6 P.1-13

http://doi.org/10.1631/ENG.ITEE.2026.0033

Dual-mode orthogonal Doherty power amplifier with efficiency enhancement and load mismatch adaptability

Author(s): Bingtao GAO, Ruibin GAO, Lei WANG, Jian LIU, Mingyu LI, Jingzhou PANG, Yi JIN
Affiliation(s): 1. School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 401331, China more
Corresponding email(s): jingzhou.pang@cqu.edu.cn
Key Words: Doherty power amplifier, Dual mode, High efficiency, Load mismatch, Orthogonal, Reciprocal bias

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Bingtao GAO, Ruibin GAO, Lei WANG, Jian LIU, Mingyu LI, Jingzhou PANG, Yi JIN. Dual-mode orthogonal Doherty power amplifier with efficiency enhancement and load mismatch adaptability[J]. Journal of Zhejiang University Science C, 2026, 27(6): 1-13.

@article{title="Dual-mode orthogonal Doherty power amplifier with efficiency enhancement and load mismatch adaptability",
author="Bingtao GAO, Ruibin GAO, Lei WANG, Jian LIU, Mingyu LI, Jingzhou PANG, Yi JIN",
journal="Journal of Zhejiang University Science C",
volume="27",
number="6",
pages="1-13",
year="2026",
publisher="Zhejiang University Press & Springer",
doi="10.1631/ENG.ITEE.2026.0033"
}

%0 Journal Article
%T Dual-mode orthogonal Doherty power amplifier with efficiency enhancement and load mismatch adaptability
%A Bingtao GAO
%A Ruibin GAO
%A Lei WANG
%A Jian LIU
%A Mingyu LI
%A Jingzhou PANG
%A Yi JIN
%J Frontiers of Information Technology & Electronic Engineering
%V 27
%N 6
%P 1-13
%@ 1869-1951
%D 2026
%I Zhejiang University Press & Springer
%DOI 10.1631/ENG.ITEE.2026.0033

TY - JOUR
T1 - Dual-mode orthogonal Doherty power amplifier with efficiency enhancement and load mismatch adaptability
A1 - Bingtao GAO
A1 - Ruibin GAO
A1 - Lei WANG
A1 - Jian LIU
A1 - Mingyu LI
A1 - Jingzhou PANG
A1 - Yi JIN
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 27
IS - 6
SP - 1
EP - 13
%@ 1869-1951
Y1 - 2026
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/ENG.ITEE.2026.0033

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: This study proposes an efficiency-enhanced dual-mode orthogonal Doherty power amplifier (ODPA) architecture. The operation theory, design process, and implementation of the proposed ODPA are introduced in detail. By introducing an orthogonal architecture with control signal power injection and incorporating a modified output matching network, the efficiency of Doherty power amplifiers under active load modulation can be enhanced. Furthermore, owing to the additional degrees of freedom provided by the orthogonal architecture, which enables independent amplitude and phase control and dynamic reshaping of the load modulation trajectories, and the dual-mode reciprocal bias configuration, the proposed ODPA exhibits high adaptability to load mismatch. To validate the proposed architecture, a 2.1-GHz dual-mode ODPA is designed and fabricated. With a matched load, the fabricated dual-mode ODPA exhibites over 60% drain efficiency throughout the power range from 6-dB output back-off (OBO) to saturation. For mismatched loads with a 2:1 voltage standing wave ratio, a saturated output power of 42.8–44.6 dBm and OBO efficiency of 47.2%–58.1% are obtained through mode reconfiguration.

具有效率增强与负载失配适应能力的双模正交Doherty功率放大器

高冰涛^1,2，高瑞彬¹，王磊²，刘健²，李明玉¹，庞竞舟¹，靳一³
¹重庆大学微电子与通信工程学院，中国重庆市，401331
²中国电子科技集团公司第36研究所，中国嘉兴市，314000
³西北工业大学电子信息学院，中国西安市，710072
摘要：提出一种效率增强的双模正交Doherty功率放大器（ODPA）架构，并详细阐述其工作原理、设计方法及具体实现。通过引入带有控制信号功率注入的正交结构，并采用改进的输出匹配网络，可有效提升Doherty功率放大器在有源负载调制过程中的效率。此外，正交结构提供额外自由度，能够实现幅度与相位的独立控制以及负载调制轨迹的动态重塑，再结合双模互易偏置配置，所提ODPA架构对负载失配具有高适应能力。为验证该架构，设计并制造了一款工作于2.1 GHz的双模ODPA。在匹配负载条件下，该放大器在6 dB输出功率回退至饱和的整个功率区间内，漏极效率均超过60%。对于电压驻波比为2:1的失配负载，通过模式重构可获得42.8–44.6 dBm的饱和输出功率以及47.2%–58.1%的输出回退效率。

关键词：Doherty功率放大器；双模式；高效率；负载失配；正交；互易偏置

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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