基于新型耦合PWM发生器的耗尽模式gan包络跟踪电源调制器

IF 4 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-03-06 DOI:10.1109/TCSII.2025.3548642

Chenhao Li;Chunyue Bo;Xiaoyu Hu;Xiangcong Zhai;Ke Wei;Xinyu Liu;Weijun Luo

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引用次数: 0

摘要

本文介绍了一种基于gan的耗尽模式包络跟踪电源调制器（ETSM），该调制器采用了一种新型的耦合脉宽调制（PWM）发生器。耦合PWM发生器由一个集成的共源放大器和几个无源元件组成。利用所提出的PWM发生器，基于氮化镓的d模ETSM可以由输入包络信号而不是一对PWM信号直接控制，从而消除了对额外PWM过程的需求。测量到的ETSM的峰值输出功率为5.4 W，在100 MHz开关频率下总效率为89%。当跟踪带宽为20 MHz、峰值平均功率比（PAPR）为6.5 dB的长期演进（LTE）信号时，ETSM的总效率为81%，平均输出功率为2.32 W，标准化均方根误差（NRMSE）为3.9%。

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A Depletion-Mode GaN-Based Envelope Tracking Supply Modulator Utilizing a Novel Coupled PWM Generator

This brief presents a depletion-mode GaN-based envelope tracking supply modulator (ETSM) that employs a novel Coupled Pulse Width Modulation (PWM) Generator. The Coupled PWM Generator consists of an integrated common-source amplifier and several passive components. With the proposed PWM generator, the d-mode GaN-based ETSM can be directly controlled by an input envelope signal instead of a pair of PWM signals, thereby eliminating the demand for an extra PWM process. The measured peak output power of the ETSM is 5.4 W, with a total efficiency of 89% at 100 MHz switching frequency. When tracking a Long Term Evolution (LTE) signal with a 20 MHz bandwidth and a 6.5 dB peak-to-average power ratio (PAPR), the ETSM achieves a total efficiency of 81%, with an average output power of 2.32 W and a Normalized Root Mean Square Error (NRMSE) of 3.9%.

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.