Researchers develop WiFi backscatter technology to replace batteries

Researchers at the University of Washington said that the revolution in the Internet of Things cannot be obtained on batteries, but it may be generated by wireless power. The computer science and engineering team submitted a document this month called WiFi backscatter technology, which uses RF signals as a new source of power for communication systems. The communications technology will connect billions of devices to the Internet while avoiding battery life issues.
The technology may become a potential business opportunity. Researcher Blaise Kellogg said that this is a nightmare for recharging batteries or replacing batteries. The backscattering of wireless networks can greatly reduce the dependence on batteries and even get rid of battery defects. The University of Washington research team has developed ultra-low-power device prototypes that can be connected to various electronic devices through antennas and circuits. Signals move between routers and laptops or smart phones, and encode the data by reflecting and not reflecting the signals of WiFi routers, causing them to make small changes. Laptops and smart phones can detect this small change and receive data from the device. This is the exchange of data through changes in the WiFi signal.
The research team is considering starting a company to commercialize WiFi backscatter technology. The research team's backscatter technology has been implemented to transfer 1 Kbps data between devices that are two meters away. The researchers plan to expand the scope to 20 meters, and this technology has already applied for a patent.

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