A High-Relative-Bandwidth Doherty Power Amplifier with Modified Load Modulation Network for Wireless Communications

被引：2
作者：
Zhu, Haipeng [1 ]
Zhang, Zhiwei [1 ]
Gu, Chao [2 ]
Xuan, Xuefei [1 ]
机构：
[1] Hangzhou Dianzi Univ, Sch Elect & Informat, Hangzhou 310018, Peoples R China
[2] Queens Univ Belfast, ECIT Inst, Belfast BT3 9DT, North Ireland
来源：
SENSORS | 2023年 / 23卷 / 05期
基金：
中国国家自然科学基金;
关键词：
broadband; Doherty power amplifier; load modulation network; relative bandwidth; DESIGN; COMPENSATION;
D O I：
10.3390/s23052767
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This paper presents a novel load modulation network to realize a broadband Doherty power amplifier (DPA). The proposed load modulation network consists of two generalized transmission lines and a modified coupler. A comprehensive theoretical analysis is carried out to explain the operation principles of the proposed DPA. The analysis of the normalized frequency bandwidth characteristic shows that a theoretical relative bandwidth of approximately 86% can be obtained across a normalized frequency range of 0.4-1.0. The complete design process that allows the design of the large-relative-bandwidth DPA based on derived parameter solutions is presented. A broadband DPA operating between 1.0 GHz and 2.5 GHz was fabricated for validation. Measurements demonstrate that the DPA can deliver an output power of 43.9-44.5 dBm with a drain efficiency of 63.7-71.6% in the 1.0-2.5 GHz frequency band at the saturation level. Moreover, a drain efficiency of 45.2-53.7% can be obtained at the 6 dB power back-off level.
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页数：16
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共 34 条
[1]   Frequency Response Analysis and Bandwidth Extension of the Doherty Amplifier [J].
Bathich, Khaled ;
Markos, Asdesach Z. ;
Boeck, Georg .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2011, 59 (04) :934-944
[2]   New Mixed-Mode Design Methodology for High-Efficiency Outphasing Chireix Amplifiers [J].
Chang, Hsiu-Chen ;
Hahn, Yunsik ;
Roblin, Patrick ;
Barton, Taylor Wallis .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2019, 66 (04) :1594-1607
[3]   The Orthogonal LMBA: A Novel RFPA Architecture With Broadband Reconfigurability [J].
Collins, David J. ;
Quaglia, Roberto ;
Powell, Jeff R. ;
Cripps, Steve C. .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2020, 30 (09) :888-891
[4]   Modified Doherty Amplifier With Extended Bandwidth and Back-Off Power Range Using Optimized Peak Combining Current Ratio [J].
Fang, Xiao-Hu ;
Liu, Hao-Yu ;
Cheng, Kwok-Keung M. ;
Boumaiza, Slim .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2018, 66 (12) :5347-5357
[5]   An Ultra-Broadband GaN Doherty Amplifier with 83% of Fractional Bandwidth [J].
Giofre, Rocco ;
Piazzon, Luca ;
Colantonio, Paolo ;
Giannini, Franco .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2014, 24 (11) :775-777
[6]   A Doherty Architecture With High Feasibility and Defined Bandwidth Behavior [J].
Giofre, Rocco ;
Piazzon, Luca ;
Colantonio, Paolo ;
Giannini, Franco .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2013, 61 (09) :3308-3317
[7]   A Modified Doherty Power Amplifier With Extended Bandwidth and Reconfigurable Efficiency [J].
Gustafsson, David ;
Andersson, Christer M. ;
Fager, Christian .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2013, 61 (01) :533-542
[8]   Design of Broadband Modified Class-J Doherty Power Amplifier With Specific Second Harmonic Terminations [J].
Huang, Chaoyi ;
He, Songbai ;
You, Fei .
IEEE ACCESS, 2018, 6 :2531-2540
[9]   Design of Multioctave Bandwidth Power Amplifier Based on Resistive Second-Harmonic Impedance Continuous Class-F [J].
Huang, Hang ;
Zhang, Bo ;
Yu, Cuiping ;
Gao, Jinchun ;
Wu, Yongle ;
Liu, Yuanan .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2017, 27 (09) :830-832
[10]   A Series-Connected-Load Doherty Power Amplifier With Push-Pull Main and Auxiliary Amplifiers for Base Station Applications [J].
Jundi, Ayman ;
Boumaiza, Slim .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2020, 68 (02) :796-807
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