Radio receiver
From The Art and Popular Culture Encyclopedia
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In radio communications, a radio receiver is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves (electromagnetic waves) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the wanted radio frequency signal from all other signals, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. The information produced by the receiver may be in the form of sound (an audio signal), images (a video signal) or data (a digital signal) A radio receiver may be a separate piece of electronic equipment, or an electronic circuit within another device. Devices that contain radio receivers include television sets, radar equipment, two-way radios, cell phones, wireless computer networks, GPS navigation devices, satellite dishes, radio telescopes, bluetooth enabled devices, garage door openers, and baby monitors.
See also
- AV receiver
- Car audio
- Crystal radio receiver
- Demodulation
- Dielectric wireless receiver
- Digital Audio Broadcast (DAB)
- Direct conversion receiver
- Minimum detectable signal
- Neutrodyne
- Radar
- Radar warning receiver
- Radiogram (furniture)
- Receiver (information theory)
- Regenerative radio receiver
- Selectivity (electronic)
- Sensitivity (electronics)
- Noise (electronics)
- Distortion
- Satnav
- Superheterodyne receiver
- Table radio
- Telecommunication
- Television receive-only
- Transistor radio
- Tuned radio frequency receiver
- Tuner (radio)
