RCA Signal Energy Harvester

[Rosphere]

"RCA is going to be selling the pocket-sized 'Airnergy wi-fi signal harvester' starting this summer, for a price of $39 to $49.  The device picks up surrounding wi-fi signals (you don’t need to connect to the network) and uses them to charge an internal battery, which can then be used to recharge small devices like cell phones.  At CES they charged a BlackBerry from 30% power to full power in about an hour and a half.  RCA is also working on building this tech directly into cell phone batteries (by next year, they hope).

Tesla’s dream of wireless electricity can now fit in a pocket.  I just have to wonder how well this works in places with weaker wi-fi signals.  Can it charge a sybian in a cornfield?  I’m asking for a friend."

http://gammasquad.uproxx.com/2010/01/airnergy-is-the-coolest

[jadaro2600]

Ever wonder why a cell phone battery is 750mAh and a regular AA rechargeable is 2450mAh?

You would think they could make a longer battery life for the form factor they use.

I wonder if those batteries will have a misrepresented life?

[Paul-R]

Is RCA trying for a patent?

can anyone suggest a circuit to work on?

[jadaro2600]

It would have to be a step down? ..then rectified.

A diagram would be nice, perhaps searching for a recently filed patent application would be in order.