Comment on Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devices

roguetrick@lemmy.world ⁨5⁩ ⁨months⁩ ago

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.

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