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arXiv · 1505.06815

Powering the Next Billion Devices with Wi-Fi

Vamsi Talla·Bryce Kellogg·Benjamin Ransford·Saman Naderiparizi·Shyamnath Gollakota·Joshua R. Smith
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Abstract

We present the first power over Wi-Fi system that delivers power and works with existing Wi-Fi chipsets. Specifically, we show that a ubiquitous piece of wireless communication infrastructure, the Wi-Fi router, can provide far field wireless power without compromising the network's communication performance. Building on our design we prototype, for the first time, battery-free temperature and camera sensors that are powered using Wi-Fi chipsets with ranges of 20 and 17 feet respectively. We also demonstrate the ability to wirelessly recharge nickel-metal hydride and lithium-ion coin-cell batteries at distances of up to 28 feet. Finally, we deploy our system in six homes in a metropolitan area and show that our design can successfully deliver power via Wi-Fi in real-world network conditions.

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Vamsi Talla, Bryce Kellogg, Benjamin Ransford, Saman Naderiparizi, Shyamnath Gollakota, Joshua R. Smith. 2015-05-26. Powering the Next Billion Devices with Wi-Fi. https://arxiv.org/abs/1505.06815

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