Analog Kid
macrumors G3
No. The problem is the radiation pattern. If you want it to work anywhere in the room, the power in the signal goes down by the square of the distance to the transmitter.gotohamish said:Question... if FireWire can power devices, and charge... can Wireless Firewire do that too? THAT would be interesting!
Imagine all the power painted on the surface of a sphere centered at the transmitter-- it's a really small sphere at the source but by the time the sphere grows to reach the receiver the paint will be pretty thin. Maybe the skin of an expanding balloon is a better analogy.
That's why you might hear your local radio station talking about mega-Watts of transmission power. They need that much at the tower so you can still get micro-Watts (actually probably much less) at your radio miles away.
You need surprisingly little power to receive data, but if you're trying to charge a battery you'll want Watts and that's just too hard to do at any distance.