A 236nW -56.5dBm-Sensitivity Bluetooth Low-Energy Wakeup Receiver with Energy Harvesting in 65nm CMOS

📋 论文概要

本文提出了一款在65nm CMOS工艺中实现的236nW功耗、-56.5dBm灵敏度的蓝牙低功耗唤醒接收机，并集成了能量收集功能，旨在实现无电池的物联网传感器节点。该设计解决了传统BLE设备持续广播导致的高功耗问题，通过超低功耗唤醒接收机大幅降低待机功耗。

💡 主要创新点

• 实现了236nW的超低功耗唤醒接收机，显著低于传统BLE接收机功耗。
• 集成能量收集模块，支持无电池自供电操作，适用于大规模物联网传感器。
• 在-56.5dBm灵敏度下仍能可靠检测BLE信号，兼顾低功耗与性能。

🏷 关键词

📄 原文摘要

Stuart N. Wooters1, Yousef Shakhsheer1, Benton H. Calhoun1, David D. Wentzloff2 PsiKick, Charlottesville, VA, 2PsiKick, Ann Arbor, MI 1 Batteryless operation and ultra-low-power (ULP) wireless communication will be two key enabling technologies as the IC industry races to keep pace with the IoE projections of 1T-connected sensors by 2025. Bluetooth Low-Energy (BLE) is used in many consumer IoE devices now because it offers the lowest average power for a radio that can communicate directly to a mobile device [1]. The BLE standard requires that the IoE device continuously advertises, which initiates the connection to a mobile device. Sub-1s advertisement intervals are common to minimize latency. However, this continuous advertising results in a typical minimum average power of 10’s of μW at low duty-cycles. This leads to the quoted 1-year lifetimes of event-driven IoE devices (e.g. tracking tags, ibeacons)

👥 作者与机构

Nathan E. Roberts1, Kyle Craig1, Aatmesh Shrivastava1,