Powering the Next Billion Devices with Wi-Fi

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.

Cited by in corpus (5)

• BLISP: Enhancing Backscatter Radio with Active Radio for Computational RFIDs
• Communications and Signals Design for Wireless Power Transmission
• Wirelessly Powered Communication Networks with Short Packets
• On Maximizing Sampling Time of RF-Harvesting Sensor Nodes Over Random Channel Gains
• On Maximizing Energy and Data Delivery in Dense Wireless Local Area Networks