'Twisted' Waves Could Boost Capacity of Wi-fi and TV

twistedradiowavesA new technique to boost the information-carrying capacity of radio waves exploits what is called the "orbital angular momentum" of the waves - imparting them with a "twist."

Varying this twist permits many data streams to fit in the frequency spread currently used for just one.

The parts of the electromagnetic spectrum that are used for all three are split up in roughly the same way, with a spread of frequencies allotted to each channel. Each one contains a certain, limited amount of information-carrying capacity: its bandwidth.

Learn more from the BBC.

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