Vortex radio waves could boost wireless capacity infinitely

After four years of incredulity and not-so-gentle mocking, researchers have finally proven that it's possible to simultaneously transmit multiple radio channels over exactly the same wireless frequency.
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Photonics, Free Full-Text

A Novel Multi-Modal OAM Vortex Electromagnetic Wave Microstrip Array Antenna

a) Intensity and (b) phase maps of the í µí³ = −1 radio beam vortex

Generation of vector vortex wave modes in cylindrical waveguides

Generation of vector vortex wave modes in cylindrical waveguides

High-efficiency reflective metasurfaces for terahertz vortex wave generation based on completely independent geometric phase modulations at three frequencies

Are we Running out of Radio Frequency Space? - Ebuyer Blog

Sensors, Free Full-Text

High-efficiency reflective metasurfaces for terahertz vortex wave generation based on completely independent geometric phase modulations at three frequencies

Far-field radiation patterns of dual-beam vortex wave. Simulated 3D

Block diagram of EM vortex imaging system. UCA: uniform circular array.

Twisted Waves: A New Dimension in Wireless Communication - Part 1. - Frank Rayal