Communications of the ACM
Streaming on a Wireless Power Connection
Integrated High-Speed Data and Wireless Power Transfer
Credit: Creative Commons
Researchers at North Carolina State University (NCSU) have developed a system that can deliver watts of power while also transmitting data at rates sufficiently high to stream video over the same wireless connection. "People thought that efficient wireless power transfer requires the use of narrow bandwidth transmitters and receivers, and that this therefore limited data transfer," says NCSU professor David Ricketts. "We've shown that you can configure a wide-bandwidth system with narrow-bandwidth components, giving you the best of both worlds."
The team envisions the wireless power transfer link as a communication connection, adapting data-rate enhancement techniques to further improve the data rate and data signal quality.
The researchers tested their system with and without data transfer, and found when transferring almost 3 watts of power the system was only 2.3-percent less efficient when also transmitting 3.39 Mbits per second. At 2 watts, the difference in efficiency was only 1.3 percent.
From North Carolina State University
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