A -97dBm-Sensitivity Interferer-Resilient 2.4GHz Wake-Up Receiver Using Dual-IF Multi-N-Path Architecture in 65nm CMOS

📋 论文概要

本文提出了一种采用双IF多N路径架构的2.4GHz唤醒接收器，在65nm CMOS工艺中实现，解决了低功耗无线传感器网络中的高灵敏度与干扰抑制问题。该接收器在0.5V单电源下实现了-97dBm的灵敏度（10kb/s，10^-3 BER），具有低数据速率和强干扰耐受能力。

💡 主要创新点

• 采用双IF多N路径架构，在实现高灵敏度（-97dBm）的同时增强了干扰抑制能力。
• 工作在0.5V低电压下，实现了超低功耗的唤醒接收器设计。

🏷 关键词

📄 原文摘要

University of Lille, Lille, France 1 3 Wake-up receivers are considered as practical solutions to enable ultra-lowpower (ULP) wireless sensor nodes (WSN) in a dense environment. A low data-rate (<~50kb/s) wake-up receiver (WuRX) should facilitate a long sensor lifetime, optimal network latency and strong interferer resilience. Moreover, such sensor nodes should be ultra-low-cost compact objects. This paper presents a 2.4GHz WuRX with -97dBm sensitivity for 10kb/s and 10-3 BER, operated from a single 0.5V supply. On-off keying (OOK) modulation has been chosen for its energy efficiency, with a cascaded multilayer N-path filter approach offering superb interferer rejection while avoiding expensive off-chip resonant components such as BAWs or crystals. Recently, several system architectures have been proposed for ULP WuRX, revisiting the classical heterodyne approach. [1,2] opted for an uncertain-IF

👥 作者与机构

Camilo Salazar1,2,3, Andreas Kaiser3, Andreia Cathelin1, Jan Rabaey2

STMicroelectronics, Crolles, France, 2University of California, Berkeley, CA,