Wi-Fi charging could be the future of wireless power2015-06-08 10:15 by Daniela
It seems that power over Wi-Fi will soon allow consumers to power their handheld devices by using the built-in Wi-Fi adapter on their device.
The announcement has been made by researchers from the University of Washington, who had developed new tech called "Power over Wi-Fi." It uses existing wireless networks to eliminate the need for charging cords. The "power over Wi-Fi" system can recharge batteries through the air, from up to 28 feet away.
Though this isn't the first time researchers have managed to successfully transmit wireless electric power, it is the first time Wi-Fi signals have been harnessed in the provision of wireless power to lower power devices. The main idea is to roll together both power and communication into a single system, utilizing an already existing Wi-Fi network to do away with the inconvenience of plugging in.
Power over Wi-Fi features just two components - an access point (a router), and custom-built sensors.
"The goal of the sensors is to harvest RF (radio frequency) power and convert it into DC power," explains Vamsi Talla, a researcher on the project. "The second piece, the access point, there we actually developed a custom solution on it, just a software modification that would enable the access point to act both as a good power delivery source and, simultaneously, also as a good Wi-Fi router."
"We have a huge Wi-Fi infrastructure already in place," Talla added. "If we can repurpose existing infrastructure for power delivery as well, then we can actually enable wireless power delivery in homes and offices."
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