Originally Posted by jerrybault

On reading the paper associated with this claim, it appears that once you wade through the optical and momentum stuff you find that they have set up two transmitters (one with the twist and the other a yagi) near each other pointed to a common location where they have set up an interferometer. An RF interferometer is two antennas set up with a variable phase adjustment on one leg and both signals fed to a summing junction. Assuming the signal levels are closely matched (reasonable given the similar transmission path geometry), proper phase adjustment causes one of the signals to cancel (or nearly cancel) leaving you with a phase adjusted version of the other signal. Re-adjustment the phase shift causes the other signal to cancel and gives the second signal.
To me this does not signify an new phenomenon, it is just a simplified version of MIMO. This is already well understood in the Communications Systems world and is in use in IEEE 802.11N standard. (linksys WRT300N)

This technique can be done with out the fancy split antennas. In fact it has been done many times with simple dipole antennas.

Is this just a case of these physicists finally finding out something that the Communications Engineers have been using for years?