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| Charge your cell phone with RF energy http://interceptradio.com/bbs/viewtopic.php?f=1&t=2865 |
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| Author: | Vizwar [ Thu Jun 11, 2009 10:15 am ] |
| Post subject: | Charge your cell phone with RF energy |
http://mobile.slashdot.org/story/09/06/ ... ing-Phones "An engineer from Nokia's UK research labs says that the company is developing technology that can harvest ambient electromagnetic radiation to keep a cellphone going. The researcher says that his group is working towards a prototype that could harvest up to 50 milliwatts of power — enough to slowly recharge a phone that is switched off. He says current prototypes can harvest 3 to 5 milliwatts. It will require a wideband receiver capable of capturing signals from between 500 megahertz and 10 gigahertz — a range that encompasses many different radio communication signals. Other researchers have developed devices that can harvest more modest power from select frequencies. A team from Intel previously developed a compact sensor capable of drawing 6 microwatts from a 1.0-megawatt TV antenna 4.1 kilometers away." I'm thinking that control channel up on Norway is looking pretty tasty.... |
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| Author: | Atomic Taco [ Thu Jun 11, 2009 11:52 am ] |
| Post subject: | Re: Charge your cell phone with RF energy |
Must've improved since this. |
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