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Nokia Developed Wireless Power-Harvesting Phones

Al writes "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."

20 of 246 comments (clear)

  1. Need More by yo_tuco · · Score: 3, Funny

    Wake me up when it can harvest 1.21 gigawatts

    1. Re:Need More by jd2112 · · Score: 5, Funny

      It's called a lightning rod, although a clock tower and a sufficient length of cable will work in a pinch. Figuring out how to get lightning to strike a DeLorian while traveling at 88mph is left as an exercise for the reader.

      --
      Any insufficiently advanced magic is indistinguishable from technology.
    2. Re:Need More by Tanktalus · · Score: 2, Funny

      is left as an exercise for the reader.

      What, I must have cheated when I watch this documentary about time travel several years ago.

      That's odd, I wasn't going to start producing any documentary until next year. I guess it works. Uh, will work. Will have worked? Damnit, I have a hard enough time trying to get regular-flow grammar right, and now I'm going to have to lear it all over again.

    3. Re:Need More by fractoid · · Score: 2, Funny

      It will be happened; it shall be going to be happening; it will be was an event that could will have been taken place in the future.

      --
      Rampant carbon sequestration destroyed the Dinosaurs' tropical paradise. I'm here to help repair the damage.
  2. Re:Crazy Idea - during his time... by sexconker · · Score: 2, Funny

    Macaroni?

  3. Re:Crazy Idea - during his time... by victim · · Score: 4, Funny

    They are asking about radio, not noodles.

  4. Re:Still waiting by FlyingBishop · · Score: 3, Funny

    They all work, they just don't cure the kind of cancer you have.

    Sorry.

  5. Charge it in the microwave oven by radionerd · · Score: 4, Funny

    10 seconds on high should be plenty

  6. Re:Crazy Idea - during his time... by MBCook · · Score: 2, Funny

    Your own reply points out the joke victim made.

    Macaroni vs. Marconi

    --
    Comment forecast: Bits of genius surrounded by a sea of mediocrity.
  7. Re:College experiments by HTH+NE1 · · Score: 4, Funny

    This is useful knowledge to have. Imagine being lost and in need of rescue. If you could create a device that siphoned sufficient power from radio signals to reduce their range, not only would you have power for a beacon but also the FCC would take care of tracking down your location so that you'd stop doing it.

    --
    Oh, say does that Star-Spangled Banner entwine / The myrtle of Venus with Bacchus's vine?
  8. Re:Crazy Idea - during his time... by Anonymous Coward · · Score: 2, Funny

    Yes, you did - but you lost all the points you made for the joke by getting into an argument about who made the joke.

  9. Re:Crystal radio by Anonymous Coward · · Score: 1, Funny

    I have geraniums but they don't act as radio receivers, nor transmitters. They don't appear to make noise either. They just grow up until they're spindly because I forget to nip the buds out. Nice red flowers though.

  10. Re:Crystal radio by geekboybt · · Score: 2, Funny

    You could transmit ads over it... ad-supported wireless power? *ducks*

  11. Re:Why not solar? by winomonkey · · Score: 2, Funny

    Um, I guess that I am technically putting it in a place where the sun doesn't shine. Are you saying that I shouldn't be doing that if I want to take advantage of your proposed solar wonder?

  12. Re:Cellphone Range by MBCook · · Score: 2, Funny

    Don't be ridiculous. This is America.

    You'll have to select a power company and only get power from them. They'll find some way to track your usage (probably an electric chip on the device which... requires power).

    Now to keep power sorted out right, each company will get their own frequency. It will be against the SDMCAaPDA (Super-DMCA and Puppy Disbursement Act) to explain to anyone the concept of an antenna or a diode, as those could be used to steal power.

    But don't worry, they'll make the power broadcast towers look like 50 foot tall lamp-posts so they will "blend in" to the scenery and not be an eyesore.

    --
    Comment forecast: Bits of genius surrounded by a sea of mediocrity.
  13. Re:Why not solar? by sznupi · · Score: 2, Funny

    Exactly my point, that's why "pseudo". I don't want to see them back, I don't want to be reminded by another thing how many people around me can be described as "douche".

    --
    One that hath name thou can not otter
  14. Re:Why not solar? by TerribleNews · · Score: 2, Funny

    The solar iPhone would be particularly galling for me, as an environmentalist: I would not longer, in good conscience, be able to tell soulpatch wearing, latté drinking ponces to stick their iPhones where the sun don't shine.

  15. Re:Why not solar? by Anonymous Coward · · Score: 1, Funny
  16. Re:Crystal radio by fractoid · · Score: 4, Funny

    I, for one, welcome our new Ad-Supported Wireless Power Ducks.

    --
    Rampant carbon sequestration destroyed the Dinosaurs' tropical paradise. I'm here to help repair the damage.
  17. Geranium powered radios by Kupfernigk · · Score: 4, Funny
    You have to extract the dye from the geranium flowers, then use it to build a continuous dye laser which you modulate with the incoming RF signal. The beam is aimed at a very fast response bolometer which provides rectification. Just amplify the signal from a small current through the bolometer to get audio output.

    This is an easy project for a 16 year old provided mummy or daddy is a full professor of physics at Stanford.

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."