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Scientists develop method of twisting radio waves

Upon careful examination the technology appears to have been around a long time. First the transmitting antenna. From what I have been able to fine in the open literature a slot is cut in a parabolic reflector. The parabolic dish is stressed or separated in the z dimension to have a multiple of 1/4 rf wave length in this case 1/2 wave length. The temporal distance causes the polarity of the rf wave to rotate 360 degrees over the time of one wave length. The antenna is physically creating the circular polarization. Nothing new here - you can find instances back to he 1960's - radar antennas. The demonstrations indicates the z axis absolute distance between the two receiving antennas is necessary for the system to work. This indicates that the receiving yagi antennas are physically moved to maintain the desired received polarization angle using temporal spacing /and a frequency lock loop - nothing to do with the "l" or mode frequencies. The "l" frequencies appear to be some form of time division sampling. Right now that is simply a guess. Until a block diagram / schematic is published we do not have any methodology to determine if there is any new engineering concepts being presented here. alan - wa0avs ps. I have a bridge for sale in new york city cheap.

2 Apr 2012

0:36 am