Battery-Less IoT Sensor Node with PLL-Less WiFi Backscattering Communications in a 2.5-μW Peak Power Envelope
Battery-Less IoT Sensor Node with PLL-Less WiFi Backscattering Communications in a 2.5-μW Peak Power Envelope
复制标题
无电池物联网传感器节点，采用 2.5μW 峰值功率包络，具有无 PLL WiFi 反向散射通信
DOI：
10.23919/vlsicircuits52068.2021.9492358
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
M. Alioto
中科院分区：
文献类型：
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作者：
Longyang Lin;K. Ahmed;P. Salamani;M. Alioto
引入了包含 802.11b WiFi 通信的片上系统，以演示低成本毫米级传感器节点的无电池操作。 µW 峰值功率通过无 PLL WiFi 反向散射通信和事件驱动的频率调节来实现，以补偿环境变化。 180nm 测试芯片集成了从四个传感器接口中的任何一个到与商用 WiFi 路由器进行无线通信的整个信号链，总功率为 2.5μW。
A system on chip including 802.11b WiFi communications is introduced to demonstrate battery-less operation for low-cost mm-scale sensor nodes. µW peak power is enabled by PLL-less WiFi backscattering communications and event-driven frequency regulation to compensate environmental variations. A 180nm testchip integrating the entire signal chain from any of four sensor interfaces to wireless communications with a commercial WiFi router exhibits 2.5µW total power.