Is there any way to double Canopy throughput?

HELLO TO EVERYONE HERE:
I just have buy a Canopy BP5730BH20-2 (wich has a 30 Mbps throughput) and some told me there is a way to double speed up to 60 Mbps aprox just using a software.

If the device i’m using (BP5730BH20-2) doesn’t allows to increase the throughput, wich other device does? where can i get one?
thanks !!

Look here: http://shop.wirelessguys.com/s.nl/sc.2/ … id.3045/.f