Before revision: In electronics, an antenna amplifier (also: aerial eamplifier (booster), Am antennefier) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance.
After revision: In electronics, an antenna amplifier (also: aerial amplifier (booster), Am antennefier) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance.