Satellite Siewindos, used with a transmitter receiver In transmission, a radio transmitter supplies an electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic wave (radio waves). In reception, an antenna intercepts some of the power of an electromagnetic wave in order to produce an electric current at its terminals, that is applied to a receiver to be amplified. Antennas are essential components of all radio equipment, and are used in radio broadcasting,broadcasting,broadcast television,two-way radio,communication receivers,radar,cell phones,satellite communication and other devices. Contact us more about what you want.