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RF Receiver Circuits

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A radio receiver is an electronic circuit that receives its input from an antenna, uses electronic filters to separate a wanted radio signal from all other signals picked up by this antenna, amplifies it to a level suitable for further processing, and finally converts through demodulation and decoding the signal into a form usable for the consumer, such as sound, pictures, digital data, measurement values and navigational positions. Consumer audio and high fidelity audio receivers and AV receivers used by home stereo listeners and audio and home theatre system enthusiasts.

Communications receivers, used as a component of a radio communication link, characterized by high stability and reliability of performance. Simple crystal radio receivers (also known as a crystal set) which operate using the power received from radio waves. Satellite television receivers, used to receive television programming from communication satellites in geosynchronous orbit.
 
Specialized-use receivers such as telemetry receivers that allow the remote measurement and reporting of information. Measuring receivers (also: measurement receivers) are calibrated laboratory-grade devices that are used to measure the signal strength of broadcasting stations, the electromagnetic interference radiation emitted by electrical products, as well as to calibrate RF attenuators and signal generators.
 
Scanners are specialized receivers that can automatically scan two or more discrete frequencies, stopping when they find a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases. They are mainly used for monitoring VHF and UHF radio systems.
Internet radio device.
 
DSP technology, short for digital signal processing, is the use of digital means to process signals and is coming into wide use in modern shortwave receivers. It is the basis of many areas of modern technology including cell phones, CD players, video recorders and computers. A digital signal is essentially a stream or sequence of numbers that relay a message through some sort of medium such as a wire.
 
 

Circuits




The proposed system consists of transmitter and receiver circuit. The transmitter circuit transmits the commands required to operate the robot. The receiver circuit receives these commands through ...

... micro controller, simply connect the digital output of the receiver to a mosfet, which will turn the motor on and off. dont forget to add a free wheel diode to the dc motor so that the sparks d...

This Audio Receiver 433 MHz RF module using circuit diagram is very interesting, it is a module 433mhz RF common of those used in alarm or electronic gate, which was transformed into audio receiver...

Remote control switch, receiver module, motorcycles, automobile anti-theft products, home security products, electric doors, shutter doors, windows, remote control socket, remote control LED, remot...

This is even more so if we consider wireless communications, where the digital information needs to be modulated on a high-speed radio-frequency (RF) carrier in the transmitter and demodulated at t...

For part of a project, my team has decided to make an RF transmitter/receiver with networking capabilities. It would specifically need multipoint-to-point networking, preferably two ways. Anybody k...


Practical Circuits: RC Transmitters and Receivers - How to remove and play wi...


Simple RF Receiver / Transmitter Pair (27 MHz)


Basics of RF Mixers in Radio Receivers / Mixer Tutorial / Frequency Conversion


Why RF circuits need shielding - or how NOT to build a Theremin! (tnx Ben!)