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High-Tech Antenna Harvests Electromagnetic Energy From Thin Air
Posted By Timon Singh On July 11, 2011 @ 6:20 pm In green technology,News,Recycled Materials,Renewable Energy | 2 Comments
The air around us is filled with waves of electromagnetic energy produced by telecommunication networks, satellite navigation systems, radio antennas, and mobile phone networks. Now a team from Georgia Tech’s School of Electrical and Computer Engineering  has developed a new device that is capable of harnessing this ambient energy and using it to power wireless sensors, computer processors, and other electronic devices. Lead researcher Manos Tentzeris and his team have used inkjet printers to create “energy-snaring” sensors and antennas  on paper and flexible polymers.
The team believes the technology could be used in multiple industries to draw power from thin air to help power communications devices and other electronic components. “There is a large amount of electromagnetic energy all around us, but nobody has been able to tap into it,” said Manos Tentzeris. “We are using an ultra-wideband antenna that lets us exploit a variety of signals in different frequency ranges, giving us greatly increased power-gathering capability.”
The team unveiled their research at the IEEE Antennas and Propagation Symposium  in Spokane, Washington. The research was sponsored by several major organisations including the National Science Foundation , the Federal Highway Administration  and Japan’s New Energy and Industrial Technology Development Organization (NEDO). 
Any frequency ranging from 100 megahertz (MHz) to 15 gigahertz (GHz) or higher contains a significant amount of energy, so it is possible that the team’s technology could soon be used to capture energy to be storied in capacitors and batteries for future use. While the amount of energy scavenged won’t power your microwave, energy from TV transmissions could amount to hundreds of microwatts – enough to operate smaller handheld electrical devices, like your TV remote!
+ Georgia Tech 
Via Science Daily 
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 Georgia Tech’s School of Electrical and Computer Engineering: http://www.ece.gatech.edu/
 to create “energy-snaring” sensors and antennas: http://www.sciencedaily.com/releases/2011/07/110707131545.htm
 Image: http://inhabitat.com/wp-content/blogs.dir/1/files/2011/07/Georgia-Tech-energy-scavenging.jpg
 IEEE Antennas and Propagation Symposium: http://www.apsursi2011.org/
 National Science Foundation: http://www.nsf.gov/
 Federal Highway Administration: http://www.fhwa.dot.gov/
 Japan’s New Energy and Industrial Technology Development Organization (NEDO).: http://www.nedo.go.jp/english/index.html
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