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Wireless charger powers up devices at distance.

shriram | 26th September 2014 | Information Technology
Wireless charger powers up devices at distance.

    Magnetic MIMO was developed by a team of scientists of the Massachusetts Institute of Technology (MIT) in the US. It locates a phone from a distance of about 40 cm and fires a targeted magnetic field to charge it – anytime you come back to your place.
In just under five hours, at a distance of 30 cm a prototype of the device can charge an iPhone 4s battery from zero.
the MIT team leader Dina Katabi told New Scientist.
When a phone disrupts the field generated by an array of wire coils, the charger senses it. The focus on the phone is achieved by creating a slightly different field with each coil, and as magnetic fields tend to reinforce each other, the summarized field that reaches the phone is maximized.
MagMIMO consumes as much power as existing solutions, yet it can charge a phone remotely without being removed from the user's pocket," the team wrote in a paper presented this September at the International Conference on Mobile Computing and Networking in Maui, Hawaii.
Technology analyst Ross Rubin at Reticle Research in New York City commented on the new device: "The dream is that we'd never have to worry about charging our gadgets again. Wireless power would be like Wi-Fi, in just about every home and many public places too.


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