Japanese Researchers Extend Range and Efficiency of Wireless Power Transmission

[bananas]

http://www.greenoptimistic.com/2010/05/08/japan-wireless-power-transmission-efficiency/

Japanese Researchers Extend Range and Efficiency of Wireless Power Transmission

Since researchers from the MIT first announced that they had a working prototype of a wireless power supply in 2007, Japanese companies (and not only) sought to replicate and even surpass MIT’s results.

The Arakawa & Komurasaki Laboratory of the University of Tokyo together with DENSO Corp. of Japan released a paper discussing magnetic resonance, at the IEICE 2010 conference, held March 16-19.

<snip>

“We wanted to escape the bonds imposed by MIT,” explains Takehiro Imura, Doctor’s Degree Candidate, Graduate School, of Engineering, Institute of Industrial Science, University of Tokyo, stating that their wireless power transmission system could be implemented from kHz to GHz frequencies. Since MIT first got out with their project in 2007, they were approached by several corporations and institutions, but they all relied on a 10 MHz frequency (although MIT never got stuck to that number).

The Japanese researchers are currently studying how they could improve microwave power transmissions (which could serve well in power transmissions from orbital solar harvesting satellites). Their first efficiency result was 83.7% in simulations, and 76% in real life.

<snip>

The article links to a longer 2-page article at http://techon.nikkeibp.co.jp/article/HONSHI/20100420/181986/

[Sherman A1]

1. Interesting

[bananas]

2. Completely Wireless HDTV

From January:

http://www.engadget.com/2010/01/07/haiers-wireless-hdtv-lacks-wires-svelte-profile-video/

Haier's wireless HDTV lacks wires, svelte profile (video)
By Jacob Schulman posted Jan 7th 2010 3:16PM

If you're at CES and just can't stand wires, be sure to drop by the Haier booth where the company is showing off its completely wireless HDTV. Employing both Wireless Electricity technology developed at MIT, as well as Wireless Home Digital Interface (WHDI) this tube can supposedly stream video over 100 feet, but there's no telling if that WiTricity signal will be as far reaching. All this technology does add a good bit of heft to the panel's profile, so even though you might be avoiding that mess of tangled cables, don't think you're getting off that easy. Video of the wire-free panel is after the break.

Haier is a Chinese appliance company, they sell a lot of stuff in the US, refrigerators, everything.
WiTricity is the wireless power transmission technology developed at MIT mentioned in the OP.

[denbot]

3. Nicola Telsa should have taken the Westinghouse deal.

I wonder what would have happened..

http://en.wikipedia.org/wiki/Wardenclyffe_Tower

[OnlinePoker]

5. There's nothing about a Westinghouse deal in your link.

What deal are you talking about?

[RC]

4. PT Barnum, is that you?

I for one don't want to be anywhere near the receiving end of a microwave power Transmission facility.

And magnetic resonance suffers from the inverse square of the distance problem.