The Wifi Antenna for Router is used to transmit and receive wireless signals. Wifi Antenna Indoor is a kind of converter, which transforms the guided wave propagating on the transmission line into electromagnetic wave propagating in free space, or vice versa. In Car Radio Antenna equipment, a component used to transmit or receive electromagnetic waves. 2.4G/ 5.8G Router Antenna is a router with wireless coverage function applied to users' Internet access.