Nokia investigates wireless charging

nokia

Engineers at the Nokia Research Centre have been using the electromagnetic radiation emitted from wifi transmitters, mobile phone antennas, TV masts and the like to harvest 3-5 milliwatts using current prototypes test circuits in the lab.

The target is to hit 50 milliwatts, which would be enough to eventually re-charge a phone that has run its battery flat.

Nokia has said that the concept is based on the idea behind an RFID tag – converting electromagnetic waves into an electrical signal. Nokia  is working on increasing the range of frequencies from which power can be harvested from the ambient radio waves.

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