Wednesday, February 26, 2020

Getting closer to no-battery devices

IoT sensors that don't require power sources could be coming soon. Researchers from University of California, San Diego, claim they've figured out how to optimize lab-based modules to such an extent that a Wi-Fi radio, used in IoT for communications with a network, could soon be using 5,000-times less energy and yet still feature enough bandwidth to send video.

The technique being exploited takes advantage of backscattering. That's a way of parasitically using radio signals inherent in everyday environments. In this case, the chip piggybacks on existing Wi-Fi transmissions to send its data. This method of sending data is power-light, because the carrier needed for the radio transmission is already created—it doesn’t need new energy for the message to be sent.

To read this article in full, please click here


Thanks to Patrick Nelson (see source)

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