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Wireless Networking

Submission + - Harness electromagnetic wave for energy ( 2

zorazora writes: A team of researchers at Georgia Tech has found a way to harness electromagnetic wave for energy.
"Tentzeris and his team of researchers, including IEEE members Rushi Vyas and Vasileios Lakafosis, have created a self-powered sensor that relies on an ultrawideband antenna to capture energy from the 100 megahertz and greater frequencies generated by all those systems. The scavenged energy is converted from AC to DC, and then stored in a capacitor that gradually fills until the sensor is fully charged. The team has used the antenna to power a number of sensors, including sensors that detect heat and humidity, as well as biosensors that monitor physiological changes in humans. And Tentzeris says that as the technology advances, it has the potential to charge other devices."

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Harness electromagnetic wave for energy

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  • They said, "... relies on an ultrawideband antenna to capture energy from the 100 megahertz and greater frequencies." 100 Mhz is the bottom end of the radio spectrum. And the radio spectrum (wireless devices) is at the bottom end of the electromagnetic spectrum, even below microwaves (more wireless devices and heating rays) and infrared rays (more heating rays, from the sun or a fire), which is below the visible light. And so on, up through the radiation spectrums. That's a lot of potential energy sources.
    • Their study is very interesting and may have some value. What is lacking in the report is first of all the initiative - Why electromagnetic spectrum given that there are so many energy sources out there to be harnessed; and secondly thorough analysis on its potential interruption on the communication channel.

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