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JSSC 2020第5期RF & Wireless

Millimeter-Scale Node-to-Node Radio Using a Carrier Frequency-Interlocking IF Re

提出一种2.4GHz毫米级节点间通信系统,解决载波频率同步难题。
-94dBm灵敏度, 97µW功耗, -12.6dBm EIRP
毫米级物联网节点间通信2.4GHz超低功耗3D磁偶极子天线
创新点1:载波频率互锁中频架构(方法创新) - 提出一种新型中频架构,通过TX-RX载波频率互锁机制解决毫米级无线系统的频率同步难题,显著提升通信稳定性,实测灵敏度达-94dBm。
创新点2:3D磁偶极子天线与射频前端协同设计(系统创新) - 将印刷3D磁偶极天线与射频前端电路联合优化,天线同时作为发射机功率振荡器和接收机Q增强放大器,实现-12.6dBm EIRP辐射效率。
创新点3:超低功耗处理器集成(电路创新) - 在4mm³体积内集成97μW超低功耗处理器,支持完整传感器节点功能,功耗较传统方案降低一个数量级。
创新点4:全栈式微型化集成(系统创新) - 通过多层堆叠技术整合光伏电池、晶体振荡器等组件,实现4×4×4mm³全球最小独立无线传感节点,支持1米双向通信。
Abstract
Ultralow-power (ULP) mm-scale Internet-of-Things (IoT) platforms enable newly emerging applications such as pervasive agricultural monitoring and biosensing. Although there is an increasing interest in node-to-node communication as defined in Bluetooth v5.0, prior research in mm-scale wireless systems is mostly limited to asymmetric node-to-gateway com- munications. We present a 2.4-GHz node-to-node communication system for an ultra-small wireless sensor node fully integrated within a 4 × 4 × 4m