A Fully Integrated Reconfigurable Wideband Envelope-Tracking SoC for High-Bandwidth WLAN Applications in a 28nm CMOS Technology

📋 论文概要

该论文提出了一款全集成可重构宽带包络跟踪SoC，用于高带宽WLAN应用，解决了现有ET系统带宽不足的问题。通过支持连续ET模式和固定电源模式之间的无缝切换，适应不同PAPR和发射功率的调制需求。

💡 主要创新点

• 提出了一种可重构的宽带包络跟踪架构，支持高达80MHz的WLAN信号带宽。
• 实现了ET模式与固定电源模式（如LDO）之间的无缝切换，提高了系统灵活性。
• 采用28nm CMOS工艺实现全集成SoC，降低了功耗和面积。

🏷 关键词

📄 原文摘要

Envelope tracking (ET) has become popular for enhancing battery life in mobile communication devices that employ high peak-to-average power ratio (PAPR) signals. Most of the published ET systems have focused either on narrowbandwidth standards, 20MHz WLAN, or LTE [1–3]. However, as the demand for higher bandwidths and data-rates increases, so does the need for wideband ET solutions. Furthermore, to support modulations with different PAPR and transmit powers, the PA will likely require seamless switching between a continuous ET mode and a fixed-supply mode (as with a low drop-out regulator, i.e. a LDO). Hence, fast reconfigurability is needed, which most published ET systems lack. This paper describes a fully integrated, reconfigurable WLAN ET system with digital baseband in a 28nm CMOS technology for bandwidths up to 40MHz. The ET modulator directly interfaces with a battery (Vbat) and is fully integrated within

👥 作者与机构

Debopriyo Chowdhury, Sraavan R. Mundlapudi, Ali Afsahi

Broadcom, San Diego, CA