A 120µW MICS/ISM-Band FSK Receiver with a 44µW Low-Power Mode Based on Injection-Locking and 9x Frequency Multiplication

📋 论文概要

该论文提出了一种120µW MICS/ISM频段FSK接收机，通过注入锁定和9倍频率乘法实现低功耗，并包含一个44µW的低功耗模式，用于短距离链路时节省功耗，解决了无线传感链路中对称性和功耗自适应的问题。

💡 主要创新点

• 采用注入锁定和9倍频率乘法技术，显著降低接收机功耗至120µW。
• 引入44µW低功耗模式，支持自适应链路距离，在短距离时以较低灵敏度换取更低功耗。
• 低功耗模式可作为唤醒接收机，在20kb/s数据率下进一步降低功耗。

🏷 关键词

📄 原文摘要

For true low-power peer-to-peer wireless links for sensing, link symmetry must be maintained unlike in [1,2] where the burden is shifted to the receiver. In addition, the transceiver power dissipation and performance should be adaptive to save power when the link distance is short. We present a 120µW MICS/ISM band receiver with -90dBm sensitivity at a data-rate of 200kb/s with BER<0.1%. The receiver incorporates a 44µW low-power (LP) mode that achieves -70dBm sensitivity at 200kb/s and 0.1% BER. At a lower data-rate of 20kb/s, the LP mode can be used as a wake-up receiver with increased sensitivity of -75dBm with 1% BER and 38µW power consumption. In traditional receiver architectures, the LO generation circuitry and the LNA typically consume the bulk of the power consumption [3]. As a result, the superregenerative architecture has been a popular choice to achieve high sensitivity at lower power dissipation [2,4,5]. The free-running LO employed in typical superregenerative receivers ne

👥 作者与机构

Jagdish Pandey, Jianlei Shi, Brian Otis

University of Washington, Seattle, WA