Wireless power transmission using acoustically coupled transducers

[DF96]

I doubt if acoustic signalling can achieve the bandwidths now routine with RF.

 

[BasicHIFI1]

I doubt if acoustic signalling can achieve the bandwidths now routine with RF.

What if you transmit in ultrasound - shift the 20 -20 kHz range to 20kHz to 40 kHz?

 

[DF96]

I was assuming ultrasound, and not just by frequency shifting an audible signal. I think the problem will be transducer coupling to air, and how well air propagates ultrasound. We can routinely get a few 100MHz of RF bandwidth at GHz frequencies, over distances of some miles. I doubt if that would work with ultrasonics. IIRC air gets very lossy at higher acoustic frequencies.

 

[scott wurcer]

Is that a TV program? Never seen it. Was the original project just another attempt by industry to take money off the US military for an idea which doesn't work?

LRAD's What Is the LRAD Sound Cannon?