How does it–It's really fast!
Yes but how can it be faster–Why is fast good? Because of all the things you do in your life.
Okay, but what technology does—Circular antenna LOLz!1
802.11ac enables faster rates primarily by supporting wider bandwidths, more antennas, and larger symbol constellations (each symbol transmitted over the wireless channel can take on one value from a larger set of possible values, thereby conveying more information per symbol).