JZUS - Journal of Zhejiang University SCIENCE

Frontiers of Information Technology & Electronic Engineering

Accepted manuscript available online (unedited version)

Design of wideband symmetrical large back-off range Doherty power amplifier based on impedance and phase hybrid optimization

Author(s): Zhongpeng NI, Jing XIA, Xin Yu ZHOU, Wa KONG, Wence ZHANG, Xiao-Wei ZHU
Affiliation(s): School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang 212013, China; more
Corresponding email(s): jingxia@ujs.edu.cn
Key Words: Back-off power range; Doherty power amplifier; Fragment-type structure; Impedance-phase hybrid function

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Zhongpeng NI, Jing XIA, Xin Yu ZHOU, Wa KONG, Wence ZHANG, Xiao-Wei ZHU. Design of wideband symmetrical large back-off range Doherty power amplifier based on impedance and phase hybrid optimization[J]. Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/FITEE.2400066

@article{title="Design of wideband symmetrical large back-off range Doherty power amplifier based on impedance and phase hybrid optimization",
author="Zhongpeng NI, Jing XIA, Xin Yu ZHOU, Wa KONG, Wence ZHANG, Xiao-Wei ZHU",
journal="Frontiers of Information Technology & Electronic Engineering",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/FITEE.2400066"
}

%0 Journal Article
%T Design of wideband symmetrical large back-off range Doherty power amplifier based on impedance and phase hybrid optimization
%A Zhongpeng NI
%A Jing XIA
%A Xin Yu ZHOU
%A Wa KONG
%A Wence ZHANG
%A Xiao-Wei ZHU
%J Frontiers of Information Technology & Electronic Engineering
%P
%@ 2095-9184
%D in press
%I Zhejiang University Press & Springer
doi="https://doi.org/10.1631/FITEE.2400066"

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T1 - Design of wideband symmetrical large back-off range Doherty power amplifier based on impedance and phase hybrid optimization
A1 - Zhongpeng NI
A1 - Jing XIA
A1 - Xin Yu ZHOU
A1 - Wa KONG
A1 - Wence ZHANG
A1 - Xiao-Wei ZHU
J0 - Frontiers of Information Technology & Electronic Engineering
SP -
EP -
%@ 2095-9184
Y1 - in press
PB - Zhejiang University Press & Springer
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doi="https://doi.org/10.1631/FITEE.2400066"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: The present paper proposes an optimization design method for the Doherty output matching network (OMN) using impedance-phase hybrid objective function constraints, which possess the capability of enhancing the efficiency consistency of the Doherty power amplifier (DPA) using integrated enhancing reactance (IER) during the power back-off range. By calculating the desired reactance for an extended power back-off 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 reduce the distribution range of the IER. Furthermore, a fragmenttype structure was 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 symmetrical DPA with a large back-off power (BOP) range was designed and fabricated. Measurement results demonstrate that across the entire operating frequency band, the saturated output power >44 dBm, and the efficiency ranges from 45% to 55% at a 9 dB BOP.

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