Dual-Wideband Three-Stage Doherty Power Amplifier Using Reciprocal Bias Configuration

IF 4.5 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2025-03-27 DOI:10.1109/TMTT.2025.3551738

Yi Zhang;Jingzhou Pang;Ruibin Gao;Mingyu Li;Weimin Shi;Shichang Chen;Zhijiang Dai

{"title":"Dual-Wideband Three-Stage Doherty Power Amplifier Using Reciprocal Bias Configuration","authors":"Yi Zhang;Jingzhou Pang;Ruibin Gao;Mingyu Li;Weimin Shi;Shichang Chen;Zhijiang Dai","doi":"10.1109/TMTT.2025.3551738","DOIUrl":null,"url":null,"abstract":"This article presents an innovative power amplifier (PA) architecture designed to achieve dual-mode three-stage Doherty operation through the incorporation of a reciprocal bias configuration. A modified three-stage load modulation network (LMN) is proposed with the objective of simultaneously achieving an extended high-efficiency range and dual-wideband performance. Furthermore, a detailed account of the relevant three-stage Doherty load modulation process is provided, accompanied by a theoretical bandwidth analysis. To validate the proposed architecture and design method, a three-stage Doherty PA (DPA) prototype employing commercial gallium nitride (GaN) active devices has been designed and meticulously fabricated. The prototype exhibits a bandwidth of 1.0–1.7 GHz in Mode I and 0.5–0.9 GHz in Mode II, thereby corroborating the efficacy of the proposed approach. The fabricated three-stage DPA achieves a peak output power of 43.6–44.6 dBm across the two designated bands. The drain efficiency was found to be between 41.5% and 51.6% and between 44.0% and 58.0% at 9–10-dB output power back-off (OBO) in Mode I and Mode II, respectively. When driven by a 10-MHz 64QAM signal with a 9-dB peak-to-average power ratio (PAPR), an average efficiency exceeding 40% was achieved.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 9","pages":"6209-6220"},"PeriodicalIF":4.5000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Microwave Theory and Techniques","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10944300/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

This article presents an innovative power amplifier (PA) architecture designed to achieve dual-mode three-stage Doherty operation through the incorporation of a reciprocal bias configuration. A modified three-stage load modulation network (LMN) is proposed with the objective of simultaneously achieving an extended high-efficiency range and dual-wideband performance. Furthermore, a detailed account of the relevant three-stage Doherty load modulation process is provided, accompanied by a theoretical bandwidth analysis. To validate the proposed architecture and design method, a three-stage Doherty PA (DPA) prototype employing commercial gallium nitride (GaN) active devices has been designed and meticulously fabricated. The prototype exhibits a bandwidth of 1.0–1.7 GHz in Mode I and 0.5–0.9 GHz in Mode II, thereby corroborating the efficacy of the proposed approach. The fabricated three-stage DPA achieves a peak output power of 43.6–44.6 dBm across the two designated bands. The drain efficiency was found to be between 41.5% and 51.6% and between 44.0% and 58.0% at 9–10-dB output power back-off (OBO) in Mode I and Mode II, respectively. When driven by a 10-MHz 64QAM signal with a 9-dB peak-to-average power ratio (PAPR), an average efficiency exceeding 40% was achieved.

查看原文本刊更多论文

采用反向偏置配置的双宽带三相多尔蒂功率放大器

本文介绍了一种创新的功率放大器（PA）架构，旨在通过结合互偏置配置实现双模三级Doherty操作。提出了一种改进的三级负载调制网络（LMN），其目标是同时实现扩展的高效范围和双宽带性能。此外，详细介绍了相关的三级Doherty负载调制过程，并进行了理论带宽分析。为了验证所提出的架构和设计方法，设计并精心制作了一个采用商用氮化镓（GaN）有源器件的三级Doherty PA （DPA）原型。该原型在模式I和模式II下的带宽分别为1.0-1.7 GHz和0.5-0.9 GHz，从而证实了所提出方法的有效性。制作的三级DPA在两个指定频段的峰值输出功率为43.6-44.6 dBm。在模式I和模式II下，在9 - 10db输出功率回退（OBO）时，漏极效率分别在41.5% ~ 51.6%和44.0% ~ 58.0%之间。当由10 mhz 64QAM信号驱动，峰值平均功率比（PAPR）为9 db时，平均效率超过40%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.