A 14.5mm2 8nW -59.7dBm-Sensitivity Ultrasonic

📋 论文概要

该论文提出了一种用于毫米级分布式节点的超声波唤醒接收机，在14.5mm²芯片面积上实现了8nW功耗和-59.7dBm灵敏度，解决了功率、面积和干扰受限应用中的唤醒问题。

💡 主要创新点

• 通过简化信号路径、减少功耗高的增益级，并在芯片-天线接口处获得增益，从而在极低功耗下实现高灵敏度。
• 采用超声波频段替代传统射频，降低了干扰并减小了天线尺寸，适合微型化节点。

🏷 关键词

📄 原文摘要

unobtrusive, distributed mm-sized nodes capable of sensing and communicating information about their surroundings. Wake-up receivers (WuRXs) – ultra-low-power receivers that monitor their environment for a wake-up signature – are an important part of this vision, as they can extend the lifetime of a wireless node by keeping it asleep until interrogated. The state of the art in WuRXs, measured in terms of sensitivity and power, has recently been advanced by streamlining the signal path to include fewer power-hungry gain stages and instead obtaining the gain at the chip-antenna interface [1,2]. This has led to excellent power-sensitivity performance, but the accompanying increase in size hampers the applicability of these techniques in size-conscious applications, such as surveillance, asset

👥 作者与机构

Wake-Up Receiver for Power-, Area-, and, Interference-Constrained Applications

Angad Singh Rekhi, Amin Arbabian Stanford University, Stanford, CA The next generation of the Internet of Things is envisioned to include