{"title":"RF Energy Harvesting For Self Powered Sensor Platform","authors":"N. Radhika, P. Tandon, T. Prabhakar, K. Vinoy","doi":"10.1109/NEWCAS.2018.8585659","DOIUrl":null,"url":null,"abstract":"This work demonstrates a RF powered sensor platform where energy can be available either in ambient FM band or emitted from a dedicated RF source. We realized the requirement with a dedicated chip built for RF power harvesting and conditioning. A switched capacitor based ultra low power DC-DC boost converter is designed in 130nm CMOS technology as energy harvesting circuitry for ambient RF. The on-chip RF-DC resulted in a maximum efficiency of 44% with 9.75k resistive load. At input sensitivities of -16dBm over 8 dominant frequencies, the sensor platform with strain gauge as sensor advertised a BLE packet every 20 minutes. For dedicated emitted radiations, the designed hybrid system is powered using sub-1 GHz frequencies. The resulting system has an end-to-end system efficiency of 9.1% and packet transmission interval of 90 seconds.","PeriodicalId":112526,"journal":{"name":"2018 16th IEEE International New Circuits and Systems Conference (NEWCAS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 16th IEEE International New Circuits and Systems Conference (NEWCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NEWCAS.2018.8585659","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
This work demonstrates a RF powered sensor platform where energy can be available either in ambient FM band or emitted from a dedicated RF source. We realized the requirement with a dedicated chip built for RF power harvesting and conditioning. A switched capacitor based ultra low power DC-DC boost converter is designed in 130nm CMOS technology as energy harvesting circuitry for ambient RF. The on-chip RF-DC resulted in a maximum efficiency of 44% with 9.75k resistive load. At input sensitivities of -16dBm over 8 dominant frequencies, the sensor platform with strain gauge as sensor advertised a BLE packet every 20 minutes. For dedicated emitted radiations, the designed hybrid system is powered using sub-1 GHz frequencies. The resulting system has an end-to-end system efficiency of 9.1% and packet transmission interval of 90 seconds.