# Vortex radio waves could boost wireless capacity “infinitely”

I am curious about and learning Vortex Maths of Marko Rodin and Double Torus Universe pattern and how they can apply to radio communications and I found someone already did.  Vortex radio waves could boost wireless capacity “infinitely”. Using this method to boost bandwidth of ground station and drone radio communication.

From the article:

After four years of incredulity and not-so-gentle mocking, Bo Thide of the Swedish Institute of Space Physics and a team in Italy have finally proven that it’s possible to simultaneously transmit multiple radio channels over exactly the same wireless frequency. In theory, according to Thide, we could potentially transmit an “infinite number” of TV, radio, WiFi, and cellular channels at the same time over the same frequency, blasting apart our highly congested wireless spectrum.

Thide’s approach is rather simple. Basically, electromagnetic waves can have both spin angular and orbital angular momentum (OAM). If you picture the Earth-Sun system, spin momentum is the Earth rotating on its axis (producing the day-night cycle), and orbital momentum is the Earth rotating around the sun (producing the seasons). In standard wireless communications — radio, TV, WiFi — we only modulate the spin angular momentum of waves. For years, Thide had theorized that orbital angular momentum could also be added to wireless signals, effectively creating a spiral signal that looks like fusilli pasta; or, in the words of Thide, a “radio vortex.”

Now, in an experiment in Venice, Thide and his Italian colleagues have transmitted two signals at the same time, on the same frequency, over a distance of 442 meters (1450ft). Pictured on the right is the antenna that the team used. No, your eyes don’t deceive you: To create these radio vortices, all you have to do is make a cut in a standard parabolic reflector and twist it slightly. If you imagine a corkscrew of radio signals being continuously transmitted from the outside edge of the antenna, that’s effectively what’s occurring. On the receiving end, there are two “normal” TV antennae (Yagi-Uda) set apart by the same angle as the break in the transmitter. These antennae “decode” the vortex, and voila: Two radio signals transmitted over the same frequency.

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Comment by Darren on December 13, 2012 at 12:53pm

Here is my adaptation of the Rodin Coil. (although unconventional :)

I always wondered if it could be utilized as an antenna, similar to a helix gps antenna.

Comment by Gisela & Joe Noci on December 13, 2012 at 10:02pm

I would really have hoped folk do some scientific research before falling for these 'factual reports' . A parabolic reflector used as part of a radio wave focusing system, when cut and 'spiralled' is no longer focusing all the  energy at the receiving LNB - in other words, you received less energy than from the original 'dish' antenna focusing element, never mind 'twice' as much.

When you dig into the schooling of the so called presenters and inventors of this theory, you very quickly find they left no trace of their education path - the varsities they claim they PHd's are from - one is in the Bahamas and does not actually exist..They have no peer reviews of their work published at all and so have not been subjected to normal peer review and scrutiny - another perpetual energy persual..

As far as your 'Rodin Coil' is concerned - I see you are very interested in antenna and antenna concepts, but do suggest some schooling on the subject, Do obtain one of the many inexpensive antenna modeling software packages and model you concepts - you will learn a lot and it is very enlightening. The Rodin Coil, due to its differential looping, is VERY effective in canceling almost all electromagnetic radiation in the near and far field - it would work very well as an energy transfer inductor for a low noise switching power supply, but naught else...

Joe

Developer
Comment by leonardthall on December 14, 2012 at 1:20am

"After four years of incredulity and not-so-gentle mocking", and may I say as an electromagnetic engineer, very appropriate mocking!

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