MURDER, POLITICS, AND THE END OF THE JAZZ AGE
by Michael Wolraich
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Twisted radio waves offer infinite Wifi capacity
By EmmaZahn on Sun, 03/04/2012 - 2:31pm |A new twist on radio waves could massively boost the capacity of Wifi and other wireless networks.
A team of scientists demonstrated the technique in Venice by beaming signals across the lagoon.
They exploited a property of radio waves called "orbital angular momentum" to send two signals on the same frequency. They gave the two signals different amounts of orbital angular momentum to differentiate them.
According to the scientists, their technique in principle* allows an infinite number of channels, potentially solving congestion problems in the electromagnetic spectrum....
...To create wave with different orbital angular momentum, the scientists split normal standard satellite dish-shaped transmitter along its radius and separated the two edges to create a corkscrew and twist the two signals different amounts.
Their research is described in the New Journal of Physics.
*emphasis added
URL:
http://www.telegraph.co.uk/technology/news/9119058/Twisted-radio-waves-offer-infinite-Wifi-capacity.html
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