A 28-GHz CMOS Power Amplifier With Adaptive Bias and Phase Compensation for Gain and Phase Linearity Enhancement

IF 4.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-19 DOI:10.1109/TCSII.2025.3581383

Liang-Chen Tsai;Zheng-Jie Li;Liang-Hung Lu

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引用次数: 0

Abstract

This brief presents a 28-GHz PA fabricated in the TSMC 90-nm CMOS process for 5G wireless communication phased-array transmitters. The proposed PA incorporates adaptive bias and phase compensation techniques to effectively mitigate AM-AM and AM-PM distortions, achieving high linearity and efficiency. The design features an envelope detector for dynamic bias adjustment, enhancing transconductance to reduce AM-AM distortion. Furthermore, a varactor-based phase correction mechanism is implemented to minimize AM-PM distortion. This brief improves both gain and phase control networks, resulting in significant improvements in key performance metrics, including

$OP_{1dB}$

$PAE_{P1dB}$

, and maximum phase distortion before

$P_{1dB}$

. The proposed PA achieves an

$OP_{1dB}$

of 14.4 dBm, a

$PAE_{P1dB}$

of 33.6%, and a maximum AM-PM distortion of 1.5°, demonstrating exceptional performance and scalability for phased-array applications in next-generation millimeter-wave systems.

查看原文本刊更多论文

一种具有自适应偏置和相位补偿的28 ghz CMOS功率放大器，用于增益和相位线性增强

本文介绍了采用台积电90纳米CMOS工艺制造的用于5G无线通信相控阵发射机的28 ghz PA。所提出的PA采用自适应偏置和相位补偿技术，有效地减轻AM-AM和AM-PM失真，实现高线性和高效率。该设计具有动态偏置调整的包络检测器，增强跨导以减少AM-AM失真。此外，还实现了一种基于变容的相位校正机制，以最小化AM-PM失真。该概要改进了增益和相位控制网络，从而显著改善了关键性能指标，包括$OP_{1dB}$, $PAE_{P1dB}$和$P_{1dB}$之前的最大相位失真。该放大器实现了14.4 dBm的OP_{1dB}$， 33.6%的PAE_{P1dB}$和1.5°的最大AM-PM失真，展示了下一代毫米波系统中相控阵应用的卓越性能和可扩展性。

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 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.