Coil in wall could wirelessly power multiple electronic devices
Friday, February 12, 2010 - 09:35
in Physics & Chemistry
(PhysOrg.com) -- A team of MIT physicists has developed a system that can wirelessly transfer power to multiple electronic devices simultaneously with high efficiency. The system takes advantage of electromagnetic resonance coupling, and could be implemented by embedding a large copper coil in the wall or ceiling of a room. Somewhat surprisingly, the physicists found that the overall efficiency of powering multiple devices can be significantly higher than the efficiency of powering each device by itself, as long as the system is properly tuned.