{"title":"Battery-Less IoT Sensor Node with PLL-Less WiFi Backscattering Communications in a 2.5-μW Peak Power Envelope","authors":"Longyang Lin, K. Ahmed, P. Salamani, M. Alioto","doi":"10.23919/VLSICircuits52068.2021.9492358","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":106356,"journal":{"name":"2021 Symposium on VLSI Circuits","volume":"697 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 Symposium on VLSI Circuits","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/VLSICircuits52068.2021.9492358","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
Abstract
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.
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