WiFi Antenna Replace the Wireless Router Antenna Most wireless routers contain a built in antenna that broadcasts a WiFi signal equally well in all directions. Greater WiFi range can sometimes be achieved with a hi-gain directional antenna that sends a stonger signal in a particular direction. Consider replacing the wireless antenna on a router to improve wireless network performance. antennagainhighrouterwifiwireless with improvingwireless802.11rangereplacerouterantenna