Seems sensible enough - it's just an automated directional antenna.
More interesting applications would surely be outside the range of phones - such as the stated WiFi example, Bluetooth, GPS, etc.
But I can't help thinking this is something that is just a miniaturisation of something already existing, say, satellite tracking antennas, etc.
License it direct to those manufacturers, let them slap it into their dies, and it'll be on £2 Bluetooth chips before you know it. Methinks patent licensing would actually be the thing that kills it, though, if anything - not battery life.