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Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devices (www.tomshardware.com)

submitted 3 months ago by schizoidman@lemmy.ml to c/technology@lemmy.world

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cross-posted from: https://lemmy.ml/post/18426215

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[–] Sparky@lemmy.blahaj.zone 1 points 3 months ago* (last edited 3 months ago) (1 children)

Wouldn't this just decrease the reception for rf devices? Isn't it just stealing power from the system to power other devices?

[–] surewhynotlem@lemmy.world 8 points 3 months ago (1 children)

No more than any random objects.

Think of it like a solar panel. Yes, it blocks light from things behind it, but it doesn't suck light from nearby.

[–] Sparky@lemmy.blahaj.zone 2 points 3 months ago (1 children)

That's interesting! I thought that if you for example have a 50w RF transmitter, taking 40w from it would make it act as a 10w one for the other devices around it.

Thx for the explanation :3

[–] Chronographs@lemmy.zip 3 points 3 months ago* (last edited 3 months ago) (1 children)

It you could build a 40w antenna sure, but it’d basically have to be a dome surrounding the transmitting one at that point.