This will not magically be overcome by constructive interference - each beam will still lose a significant amount of power as function of distance.
Higher frequency RF signals are fairly easy (especially V/UHF) to beamform into a tight area, which can compensate for the loss, by focusing your power in one direction instead of radially. You still lose power over distance as the beam's energy spreads.
I don't believe they will just be able to blob a "networked" 60Hz transmission into a 1cm area - I did not read the patent, but you may be able to do such a thing by varying the phase to induce a 60Hz wave via beat frequencies between transmitting signals, at ONLY the specified area.
Having the necessary +-1Hz resolution on a 2.4GHz carrier (especially one that is not using a hardware connected, phase locked oscillator) may prove very difficult if not impossible. I suspect they may try to use one of the lower scientific bands around 900 or less MHz. HF is also a fairly unregulated option, though tight beamforming may still be difficult. Perhaps a smart application of null steering could create the necessary oscillation - I am still working this out in a simulation.
If this method is correct, keeping everything tight enough to be within US electrical standards will be difficult - there are specific regulations related to in-band power, harmonics, frequency tolerances, etc. Regardless of all that, this technology is pretty incredible and I look forward to investigating it further!
> This will not magically be overcome by constructive interference - each beam will still lose a significant amount of power as function of distance.
Well, yes, and no.
Each beam does "lose" energy compared to the theoretical amount it'd have without interference.
But the power you can transmit into any area inside the cells coverage is nearly constant, and you do not need to put that all extra energy your beans are "losing" into the transmiters, just a tiny part of it (due to errors, delays, object interference, etc).
Higher frequency RF signals are fairly easy (especially V/UHF) to beamform into a tight area, which can compensate for the loss, by focusing your power in one direction instead of radially. You still lose power over distance as the beam's energy spreads.
I don't believe they will just be able to blob a "networked" 60Hz transmission into a 1cm area - I did not read the patent, but you may be able to do such a thing by varying the phase to induce a 60Hz wave via beat frequencies between transmitting signals, at ONLY the specified area.
Having the necessary +-1Hz resolution on a 2.4GHz carrier (especially one that is not using a hardware connected, phase locked oscillator) may prove very difficult if not impossible. I suspect they may try to use one of the lower scientific bands around 900 or less MHz. HF is also a fairly unregulated option, though tight beamforming may still be difficult. Perhaps a smart application of null steering could create the necessary oscillation - I am still working this out in a simulation.
If this method is correct, keeping everything tight enough to be within US electrical standards will be difficult - there are specific regulations related to in-band power, harmonics, frequency tolerances, etc. Regardless of all that, this technology is pretty incredible and I look forward to investigating it further!