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Author Gollakota, Shyamnath ♦ Kellogg, Bryce ♦ Talla, Vamsi ♦ Ransford, Benjamin ♦ Naderiparizi, Saman ♦ Smith, Joshua R.
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Language English
Abstract We present the first power over Wi-Fi system that delivers power to low-power sensors and devices and works with existing Wi-Fi chipsets. We show that a ubiquitous part of wireless communication infrastructure, the Wi-Fi router, can provide far field wireless power without significantly compromising the network's communication performance. Building on our design, we prototype battery-free temperature and camera sensors that we power with Wi-Fi at ranges of 20 and 17 ft, respectively. We also demonstrate the ability to wirelessly trickle-charge nickel--metal hydride and lithium-ion coin-cell batteries at distances of up to 28 ft. We deploy our system in six homes in a metropolitan area and show that it can successfully deliver power via Wi-Fi under real-world network conditions without significantly degrading network performance.
Description Affiliation: University of Washington, Seattle, WA (Talla, Vamsi; Kellogg, Bryce; Ransford, Benjamin; Naderiparizi, Saman; Smith, Joshua R.; Gollakota, Shyamnath)
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-08-01
Publisher Place New York
Journal Communications of the ACM (CACM)
Volume Number 60
Issue Number 3
Page Count 9
Starting Page 83
Ending Page 91


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Source: ACM Digital Library