radiodish Scientists demonstrate radio wave twisting to increase bandwidth

Scientists have demonstrated how “twisting” radio waves can significantly increase their capacity to carry information, which could free up frequency space for more radio, television, and Wi-Fi transmissions.

Scientists have demonstrated how “twisting” radio waves can significantly increase their capacity to carry information, which could free up frequency space for more radio, television, and Wi-Fi transmissions.

 
Professor Bo Thide from the Swedish Institute of Space Physics and a number of Italian colleagues shared their discovery in the New Journal of Physics, where they argued that the problem of limited bandwidth could soon be solved.
 
The technique employs what is called “orbital angular momentum” to bend the waves, a method also believed to be employed in black holes. This allows for a wave to contain more information than previously possible by expanding its potential bandwidth.
 
radiodish Scientists demonstrate radio wave twisting to increase bandwidth
 
The scientists demonstrated the theory by sending a signal from San Giorgio island to Palazzo Ducale in St. Mark's square, the location where Galileo first showed off his telescope hundreds of years ago. They employed a simple technique of adding a twist to the dish that sent the signal, resulting in it twisting and providing more bandwidth than normal.
 
The significance of this discovery cannot be understated, as the telecommunications industry is suffering from a severe lack of spectrum, particularly in the mobile sector, where Wi-Fi-capable smartphones and tablet computers are continuing to boom.
 
Source and Image Credit: BBC