A 4.5nW Wake-Up Radio with -69dBm Sensitivity

📋 论文概要

该论文提出了一款功耗仅4.5nW、灵敏度达-69dBm的唤醒接收机（WuRX），适用于无人地面传感器和智能家居等事件驱动型应用。通过优化射频前端和包络检测架构，解决了传统WuRX功耗与带宽之间的权衡问题。

💡 主要创新点

• 采用超低功耗射频前端设计，实现4.5nW的功耗水平，同时保持-69dBm的灵敏度。
• 针对不频繁唤醒场景优化信号检测机制，降低带宽需求以进一步节省功耗。

🏷 关键词

📄 原文摘要

Gabriel M. Rebeiz, Drew A. Hall, Patrick P. Mercier University of California, San Diego, CA Wake-up receivers (WuRXs) are low-power radios that continuously monitor the RF environment to wake up a higher-power radio upon detection of a predetermined RF signature. Prior-art WuRXs have 100s of kHz of bandwidth [1] with low signature-to-wake-up-signal latency to help synchronize communication amongst nominally asynchronous wireless devices. However, applications such as unattended ground sensors and smart home appliances wake-up infrequently in an event-driven manner, and thus WuRX bandwidth and latency are less critical; instead, the most important metrics are power consumption and sensitivity. Unfortunately, current state-of-the-art WuRXs utilizing direct envelope-detecting

👥 作者与机构

Haowei Jiang, Po-Han Peter Wang, Li Gao, Pinar Sen, Young-Han Kim,