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Wireless Power Hotspot that Charges All of Your Devices

Author(s)
Shi, Lixin; Katabi, Dina; Kabelac, Zachary E.; Perreault, David J.
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Abstract
Each year, consumers carry an increasing number of gadgets on their person: mobile phones, tablets, smartwatches, etc. As a result, users must remember to recharge each device, every day. Wireless charging promises to free users from this burden, allowing devices to remain permanently unplugged. Today's wireless charging, however, is either limited to a single device, or is highly cumbersome, requiring the user to remove all of her wearable and handheld gadgets and place them on a charging pad. This paper introduces MultiSpot, a new wireless charging technology that can charge multiple devices, even as the user is wearing them or carrying them in her pocket. A MultiSpot charger acts as an access point for wireless power. When a user enters the vicinity of the MultiSpot charger, all of her gadgets start to charge automatically. We have prototyped MultiSpot and evaluated it using off-the-shelf mobile phones, smartwatches, and tablets. Our results show that MultiSpot can charge 6 devices at distances of up to 50cm.
Date issued
2015-09
URI
http://hdl.handle.net/1721.1/99110
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Journal
Proceedings of the 21st Annual International Conference on Mobile Computing and Networking (MobiCom '15)
Publisher
Association for Computing Machinery (ACM)
Citation
Lixin Shi, Zachary Kabelac, Dina Katabi, and David Perreault. 2015. Wireless Power Hotspot that Charges All of Your Devices. In Proceedings of the 21st Annual International Conference on Mobile Computing and Networking (MobiCom '15). ACM, New York, NY, USA, 2-13.
Version: Author's final manuscript
ISBN
9781450336192

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