A 220μW -85dBm Sensitivity BLE-Compliant Wake-up Receiver Achieving -60dB SIR via Single-Die MultiChannel FBAR-Based Filtering and a 4-Dimentional Wake-Up Signature

📋 论文概要

该论文提出了一种符合BLE标准的唤醒接收机，实现了220μW的超低功耗和-85dBm的灵敏度，并通过单芯片多通道FBAR滤波器实现了-60dB的信号干扰比，解决了传统唤醒接收机无法兼容标准、抗干扰能力差和缺乏多通道支持的问题。

💡 主要创新点

• 采用单芯片多通道FBAR滤波器，在低功耗下实现了多通道选择和-60dB的干扰抑制能力。
• 设计了一种符合BLE标准的唤醒接收机架构，在220μW功耗下达到-85dBm灵敏度，兼顾了标准兼容性和超低功耗。

🏷 关键词

📄 原文摘要

Wake-up receivers (WuRXs) offer an attractive low-power means to synchronize low-average-throughput wireless devices without requiring energy-expensive periodic synchronization routines between primary radios. To achieve low-power operation, most prior-art WuRXs tend to utilize custom OOK or FSK modulation schemes that are not compliant with any standards, while also forgoing important capabilities present in more powerful radios, such as the ability to operate in the presence of potentially large interferers or dynamically switch between multiple channels – both of which are very important when operating in congested bands. Since Bluetooth Low Energy (BLE) is one of the most popular standards for lowpower IoT devices, prior work has endeavored to develop BLE-compliant WuRXs that achieve low-power operation through means of back-channel (BC) communication – signals that are generated by a standard-compliant BLE TX, yet

👥 作者与机构

Po-Han Peter Wang, Patrick P. Mercier

University of California, San Diego, La Jolla, CA