Radio receivers are essential components of all systems that use radio. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. The antenna intercepts radio waves ( electromagnetic waves of radio frequency) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information.
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. During the golden age of radio, 1925–1955, families gathered to listen to the home radio receiver in the evening Girl listening to vacuum tube console radio in the 1940s.