Nokia, the world's leading mobile phone manufacturer, is planning to introduce technology, whereby users can charge up their mobile phones and other devices with the help of radio waves. It will be a revolution in the history of mobile phone industry. The company expects by 2013 that users will be able to use electromagnetic radiation (AER) to recharge their mobile phones. The waves may come from any source such as Wi-Fi transmitters. It will be an extension to the existing technology used to power wireless sensors.

Boffins from the Nokia Research Centre in Cambridge are in a position to get 5 milliwatts from current prototypes. Current mobile phones require 10 times more power than this however before going to market. It's not about charging but to reducing battery drain. Charging will take place when the handset is switched off and is likely to take several hours. The system requires a wideband receiver to catch signals from between 500 megahertz and 10 gigahertz. Several other communication devices also use this sytem and within a few years, Nokia may come up with technology that will do away with traditional chargers. The buzz is that Nokia is planning to use AER along with other energy-harvesting approaches such as solar cells in phones. An industrial expert made a comment with a humorous tone that the company may introduce technology utilising the body's own heat instead of electrical power to charge a mobile phone.

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