Performance Enhancement of Dual-Input Frequency-Periodic Load Modulated Power Amplifier at 1–5.7-GHz Bandwidth With Co-Designed Biasing Network

IF 3.6 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2025-07-24 DOI:10.1109/ACCESS.2025.3592238

Takuma Torii;Yuji Komatsuzaki;Shintaro Shinjo;Ryo Ishikawa

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引用次数: 0

Abstract

This study proposes a novel dual input power amplifier (PA) with a frequency-periodic load modulated output matching network supported by a broadband biasing network. The output matching network consists of two transmission lines which enable the dual-input PA to operate in Doherty or outphasing modes depending on the frequency. The proposed broadband biasing network simply consists of a short stub circuit that cooperates with the output matching network. The biasing network not only provides a bias to PA, but also improves the bandwidth in the back-off operation over the broadband characteristic of 145%. The two independent input signals are utilized to optimize the operation of Doherty and outphasing mode. The dual-input PA is implemented using a

$0.15~\mu $

m GaN HEMT process. The fabricated PA shows a saturated output power of 35.2 dBm to 38.1 dBm with a power added efficiency (PAE) of 36.6% to 62% for the broadband 1 GHz to 5.7 GHz. The fabricated PA demonstrated an averaged output power of 27.7 dBm to 31.8 dBm, a PAE of 35% to 56.2% and an adjacent channel power Ratio (ACPR) of -41 to -55 dBc.

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协同设计偏置网络对1 - 5.7 ghz双输入频率周期负载调制功率放大器性能的增强

本研究提出一种新型的双输入功率放大器（PA），其频率周期负载调制输出匹配网络由宽带偏置网络支持。输出匹配网络由两条传输线组成，使双输入PA根据频率在Doherty或out - phasing模式下工作。所提出的宽带偏置网络仅由与输出匹配网络配合的短存根电路组成。该偏置网络不仅提供了对PA的偏置，而且还将回退操作中的带宽提高了145%的宽带特性。利用这两个独立的输入信号来优化Doherty和同相模式的运行。双输入PA采用$0.15~\mu $ m的GaN HEMT工艺实现。在1ghz ~ 5.7 GHz频段，该放大器的饱和输出功率为35.2 ~ 38.1 dBm，功率附加效率（PAE）为36.6% ~ 62%。制作的PA平均输出功率为27.7 ~ 31.8 dBm， PAE为35% ~ 56.2%，相邻通道功率比（ACPR）为-41 ~ -55 dBc。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

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