Comment on 'Encoding many channels on the same frequency through radio vorticity: first experimental test'

Michele Tamagnone, Christophe Craeye, Julien Perruisseau-Carrier

We show that the public experiment held in Venice by F. Tamburini et al and reported in (2012 New J. Phys. 14 033001) can be regarded as a particular implementation of Multiple-Inp…