Is it possible to wirelessly transmit 1920x1080 32-bit color 30fps video through VGA from laptop to HDTV?
On a side note, I believe the power is required for the analog to digital converter in wireless transmissions, and not the signal itself, since there is +5V DC power running through one of the pins. So you might actually have better luck searching for USB powered signal converters, because once the signal is digital, you're home free.  

Something like this:

http://www.atlona.com/Atlona-VGA-to-HDMI-Scaler-Converter-USB-Powered.html

Once it's digital, you could use something like this if the little bit of latency isn't a big deal:

http://www.amazon.ca/Nyrius-Transmitter-Streaming-Satellite-NPCS549/dp/B009E6R89C