A 2.4V 23.9dBm 35.7%-PAE -32.1dBc-ACLR LTE20MHz Envelope-Shaping-and-Tracking System with a Multiloop-Controlled AC-Coupling Supply Modulator and a Mode-Switching PA

📋 论文概要

本文提出了一种用于LTE 20MHz信号的包络整形跟踪系统，采用多环控制交流耦合架构，在2.4V电源下实现了23.9dBm输出功率、35.7%的功率附加效率（PAE）和-32.1dBc的相邻信道泄漏比（ACLR）。该系统有效解决了传统包络跟踪技术中线性PA效率低的问题，通过包络整形和多环控制提升了整体性能。

💡 主要创新点

• 提出了一种多环控制的交流耦合包络整形跟踪架构，实现了高线性度和高效率的折中。
• 在2.4V低电源电压下实现了23.9dBm输出功率和35.7%的PAE，适用于LTE 20MHz信号，ACLR优于-32.1dBc。

🏷 关键词

📄 原文摘要

the efficiency of the power amplifiers (PAs) due to high peak-to-average power ratios of transmitted signals. Envelope tracking (ET) and envelope-eliminationand-restoration (EER) techniques have been proposed to improve the PA efficiency by adapting the PA supply voltage to the envelope. Linear PAs in ET systems are mostly implemented in non-CMOS technologies for high efficiency

👥 作者与机构

Xun Liu, Heng Zhang, Min Zhao, Xuan Chen, Philip K. T. Mok, Howard C. Luong

Hong Kong University of Science and Technology, Hong Kong, China Long-term-evolution (LTE) communication enables high data-rates but degrades