asteroza + emf   7

Encoding many channels on the same frequency through radio vorticity: first experimental test
New trick of adding vortex twist rather than traditional polarization to a signal to boost encoding for a single frequency. The requirement for what appears to be a directional helicoidal parabolic antenna ( does this mean the antenna needs to be a few wavelengths in depth?) means no love for mobile omnidirectional antennas though.
radio  vorticity  vortex  twisted  transmission  helical  OAM  SAM  polarization  encoding  helicoidal  parabolic  antenna  physics  EM  EMF  research  Delicious 
march 2012 by asteroza

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