A 950ns 0.5-to-5.5V 5G NR RF PA Supply Modulator with Floating Capacitor Control for Symbol Power Tracking

📋 论文概要

本文提出了一种用于5G NR射频功率放大器（RF PA）的电源调制器，通过浮动电容控制实现符号功率跟踪，在0.5至5.5V范围内达到950ns的快速动态电压缩放，解决了传统电源调制器转换时间慢导致效率降低和误差矢量幅度恶化的问题。

💡 主要创新点

• 提出浮动电容控制技术，实现快速动态电压缩放，转换时间仅950ns。
• 支持0.5至5.5V宽输出电压范围，适用于5G NR RF PA的符号功率跟踪。
• 通过优化控制环路，在10μs过渡时间内满足5G NR要求，提升系统效率。

🏷 关键词

📄 原文摘要

in which the output power of the RF power amplifier (RF PA) changes rapidly, the fast dynamic voltage scaling (DVS) is required in the supply modulator that provides voltage to the RF PA. In 3GPP requirements, the user equipment (UE) should complete the transmitter (Tx) power change within a transition time defined as 20μs in LTE and 10μs in 5G NR. However, the slower the transition time of the supply modulator, the larger the difference between the output voltage of the supply modulator and the required voltage of the RF PA, resulting in a lower power efficiency and higher error vector magnitude (EVM). For example, because the 5G NR 60kHz sub-carrier spacing (SCS) has a cyclic-prefix (CP) of the length 1.2μs between two symbols and a symbol duration of 16.6μs, the conventional average

👥 作者与机构

Ik-Hwan Kim, Jeong-Il Seo, Younghwan Choo, Seungchan Park, Jaeyeol Han,

Woosik Kim, Sungyoub Jung, Taehyuk Ko, Dongsu Kim, Jongwoo Lee, Sungung Kwak Samsung Electronics, Hwaseong, Korea With the increasing demand for 5G new radio (NR)