{"title":"Loosely Coupled Wireless Charging of Footwear-based Sensor System","authors":"N. Jeong, E. Hackett, Jun Youp Lee, E. Sazonov","doi":"10.1109/WAMICON.2019.8765466","DOIUrl":null,"url":null,"abstract":"This paper presents a wireless charging system that can power up footwear-based sensors. Loosely coupled magnetic resonant technique was applied to achieve a 20 mm-long charging distance relative to the conventional Qi charging, which requires close proximity and precise alignment. Transmitting and receiving resonators are modeled and simulated with a full-wave solver, ANSYS HFSS. Simulation results match measured results with respect to coupling coefficient (k). The resonator coupling efficiency (RCE) for the loosely coupled wireless charging system over a 20 mm gap is 65%, which seems feasible for a small battery-operated sensor system.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WAMICON.2019.8765466","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
This paper presents a wireless charging system that can power up footwear-based sensors. Loosely coupled magnetic resonant technique was applied to achieve a 20 mm-long charging distance relative to the conventional Qi charging, which requires close proximity and precise alignment. Transmitting and receiving resonators are modeled and simulated with a full-wave solver, ANSYS HFSS. Simulation results match measured results with respect to coupling coefficient (k). The resonator coupling efficiency (RCE) for the loosely coupled wireless charging system over a 20 mm gap is 65%, which seems feasible for a small battery-operated sensor system.
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