• ✺roguetrick✺@lemmy.world
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    8 months ago

    https://en.m.wikipedia.org/wiki/Rectenna

    What they’ve done here is use the very old existing rectenna technology and new types of nanoscale rectenna arrays to capture very low energy radio waves without an external antenna. We’re taking -20 dBm or 10 μW.

    In the end, I welcome any rectenna advances because if we ever build an efficient optical rectenna it’ll blow photovoltaics out of the water by efficiency. Optical rectennas are like fusion power in just how revolutionary they would be to our energy economy.

  • Treczoks@lemmy.world
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    8 months ago

    Tale as old as time. And guess what will happen? Wifi signal strength will go down.

  • robber@lemmy.ml
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    8 months ago

    No radio expert here, but would’nt this at some point interfere with the transmissions if deployed at a large scale?

  • Antergo@lemmy.ml
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    8 months ago

    I know of companies who have already tested and tried this our years ago, didn’t read the article but doesn’t seam very new to me

  • wabafee@lemmy.world
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    8 months ago

    This ain’t free at all it’s more like stealing electricity with extra steps. Though if it does not degrade wifi or radio signal I’m up for it be used aside from just wasting away.