Technically, WiFi beam-forming, which is part of the standard since 802.11n and is really taking off with high-end 802.11ac routers, is a phased array to all in

Technically, WiFi beam-forming, which is part of the standard since 802.11n and is really taking off with high-end 802.11ac routers, is a phased array to all intents and purposes. The future is here.