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CLC number: TN722
On-line Access: 2025-02-10
Received: 2024-01-29
Revision Accepted: 2024-05-27
Crosschecked: 2025-02-18
Cited: 0
Clicked: 1087
Design of a wideband symmetric large back-off range Doherty power amplifier based on impedance and phase hybrid optimization
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Zhongpeng NI, Jing XIA, Xinyu ZHOU, Wa KONG, Wence ZHANG, Xiaowei ZHU. Design of a wideband symmetric large back-off range Doherty power amplifier based on impedance and phase hybrid optimization[J]. Frontiers of Information Technology & Electronic Engineering, 2025, 26(1): 146-156.
@article{title="Design of a wideband symmetric large back-off range Doherty power amplifier based on impedance and phase hybrid optimization",
author="Zhongpeng NI, Jing XIA, Xinyu ZHOU, Wa KONG, Wence ZHANG, Xiaowei ZHU",
journal="Frontiers of Information Technology & Electronic Engineering",
volume="26",
number="1",
pages="146-156",
year="2025",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.2400066"
}
%0 Journal Article
%T Design of a wideband symmetric large back-off range Doherty power amplifier based on impedance and phase hybrid optimization
%A Zhongpeng NI
%A Jing XIA
%A Xinyu ZHOU
%A Wa KONG
%A Wence ZHANG
%A Xiaowei ZHU
%J Frontiers of Information Technology & Electronic Engineering
%V 26
%N 1
%P 146-156
%@ 2095-9184
%D 2025
%I Zhejiang University Press & Springer
%DOI 10.1631/FITEE.2400066
TY - JOUR
T1 - Design of a wideband symmetric large back-off range Doherty power amplifier based on impedance and phase hybrid optimization
A1 - Zhongpeng NI
A1 - Jing XIA
A1 - Xinyu ZHOU
A1 - Wa KONG
A1 - Wence ZHANG
A1 - Xiaowei ZHU
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 26
IS - 1
SP - 146
EP - 156
%@ 2095-9184
Y1 - 2025
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/FITEE.2400066
Abstract: The present paper proposes an optimization design method for the Doherty output matching network (OMN) using impedance–;phase hybrid objective function constraints, which possesses the capability of enhancing the efficiency consistency of the doherty power amplifier (DPA) using integrated enhancing reactance (IER) during the back-off power (BOP) range. By calculating the desired reactance for an extended BOP range and combining it with the two-impedance matching method, the S-parameters of the OMN are obtained. Meanwhile, the impedance and phase constraints of the OMN are proposed to narrow the distribution range of the IER. Furthermore, a fragment-type structure is employed in the OMN optimization so as to enhance the flexibility of the circuit optimization design. To validate the proposed method, a 1.7–2.5 GHz symmetric DPA with a large BOP range was designed and fabricated. Measurement results demonstrate that across the entire operating frequency band, the saturated output power is >44 dBm, and the efficiency ranges from 45% to 55% at a 9-dB BOP.
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