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  2. RF front end - Wikipedia

    en.wikipedia.org/wiki/RF_front_end

    Block diagram of a superheterodyne receiver. The RF front end consists of the components on the left colored red. In a radio receiver circuit, the RF front end, short for radio frequency front end, is a generic term for all the circuitry between a receiver's antenna input up to and including the mixer stage. [1]

  3. File:Tuned radio frequency (TRF) receiver block diagram 2.svg

    en.wikipedia.org/wiki/File:Tuned_radio_frequency...

    It consisted of one or more tuned RF amplifiers, each consisting of a tuned circuit which functioned as a bandpass filter followed by an amplifier; a detector (demodulator) to extract the audio waveform from the radio carrier wave; followed by an audio amplifier.

  4. File:Simple TRF receiver block diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Simple_TRF_receiver...

    English: Block diagram of a tuned radio frequency (TRF) receiver, the simplest type of amplifying radio receiver circuit. It consists of one or more tuned RF amplifiers, each consisting of a tuned circuit which functioned as a bandpass filter followed by a radio frequency (RF) amplifier; a detector (demodulator) to extract the audio waveform from the radio carrier wave; followed by an audio ...

  5. Radio receiver design - Wikipedia

    en.wikipedia.org/wiki/Radio_receiver_design

    The RF signal from the antenna may have one stage of amplification to improve the receiver's noise figure, although at lower frequencies this is typically omitted. The RF signal enters a mixer, along with the output of the local oscillator, in order to produce a so-called intermediate frequency (IF) signal. An early optimization of the ...

  6. Tuned radio frequency receiver - Wikipedia

    en.wikipedia.org/wiki/Tuned_radio_frequency_receiver

    Block diagram of TRF receiver. The classic TRF receivers of the 1920s and 30s usually consisted of three sections: one or more tuned RF amplifier stages. These amplify the signal of the desired station to a level sufficient to drive the detector, while rejecting all other signals picked up by the antenna.

  7. File:Superheterodyne receiver block diagram 2.svg - Wikipedia

    en.wikipedia.org/wiki/File:Superheterodyne...

    English: Block diagram of a single conversion superheterodyne radio receiver. Invented by Edwin Armstrong in 1918 during World War 1, the superheterodyne is the design used in almost all modern radio receivers.

  8. Radio receiver - Wikipedia

    en.wikipedia.org/wiki/Radio_receiver

    The RF front end of the receiver is often cryogenically cooled to −195.79 °C (−320 °F) by liquid nitrogen to reduce radio noise in the circuit. Remote control - Remote control receivers receive digital commands that control a device, which may be as complex as a space vehicle or unmanned aerial vehicle , or as simple as a garage door opener .

  9. Antenna feed - Wikipedia

    en.wikipedia.org/wiki/Antenna_feed

    In a radio antenna, the feed line (feedline), or feeder, is the cable or other transmission line that connects the antenna with the radio transmitter or receiver.In a transmitting antenna, it feeds the radio frequency (RF) current from the transmitter to the antenna, where the energy in the current is radiated as radio waves.