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Superheterodyne receiver information


A 5-tube superheterodyne receiver manufactured by Toshiba circa 1955
Superheterodyne transistor radio circuit circa 1975

A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. It was invented by French radio engineer and radio manufacturer Lucien Lévy.[1][unreliable source?] Virtually all modern radio receivers use the superheterodyne principle.

  1. ^ Cite error: The named reference Klooster_2009 was invoked but never defined (see the help page).

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Superheterodyne receiver

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A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed...

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Radio receiver

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Advantages section below describes how the superheterodyne receiver overcomes these problems. The superheterodyne receiver, invented in 1918 by Edwin Armstrong...

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Tuned radio frequency receiver

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By the mid 1930s, it was replaced by the superheterodyne receiver patented by Edwin Armstrong. The TRF receiver was patented in 1916 by Ernst Alexanderson...

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RF front end

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be transferred to the rest of the receiver at the more easily handled intermediate frequency. For most superheterodyne architectures, the RF front end consists...

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Intermediate frequency

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There may be several such stages of intermediate frequency in a superheterodyne receiver; two or three stages are called double (alternatively, dual) or...

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Radio receiver design

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previously been available. The greatly improved selectivity of the superheterodyne receiver overtook the TRF design in almost all applications, however the...

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Shortwave radio receiver

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Wasp" line of regenerative receivers. E.H. Scott Radio Laboratories offered its superheterodyne "World's Record" shortwave receiver kit in the late 1920s,...

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Tetrode

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The principle of the modern superheterodyne (or superhet) receiver (originally named the super-sonic heterodyne receiver, because the intermediate frequency...

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Heterodyne

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heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers. In 1901, Reginald Fessenden...

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Regenerative circuit

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"reflex" receivers) and especially by another Armstrong invention - superheterodyne receivers and is largely considered obsolete.: p.190  Regeneration (now...

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Edwin Howard Armstrong

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inventor, who developed FM (frequency modulation) radio and the superheterodyne receiver system. He held 42 patents and received numerous awards, including...

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Antique radio

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manufacturers could afford to build a superheterodyne receiver (superhet). RCA had exclusive rights to the superheterodyne circuit patents and extracted high...

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Radar detector detector

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detectors are declared illegal. Radar detectors are built around a superheterodyne receiver, which has a local oscillator that radiates slightly. It is therefore...

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Neutrodyne

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Neutrodyne circuit was popular in radio receivers until the 1930s, when it was superseded by the superheterodyne receiver. The circuit was developed about 1922...

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Cascode

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cascode circuit is very useful as a multiplying mixer circuit in superheterodyne receivers. At the lower gate the RF signal is fed to the mixer, and at the...

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Spectrum analyzer

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(FFT) based spectrum analyzers: A swept-tuned analyzer uses a superheterodyne receiver to down-convert a portion of the input signal spectrum to the center...

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Frequency mixer

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or further signal processing. For example, a key component of a superheterodyne receiver is a mixer used to move received signals to a common intermediate...

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Product detector

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superheterodyne receiver, and a detector designed for RF can be combined with an RF amplifier and a low-pass filter into a direct-conversion receiver...

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Lo

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open-source office software suite Local oscillator in, for example, a superheterodyne receiver Liceum ogólnokształcące, a type of general academic high school...

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Superheterodyne transmitter

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Superheterodyne transmitter is a radio or TV transmitter which uses an intermediate frequency signal in addition to radio frequency signal. There are...

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RCA

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industry as a major manufacturer of radio receivers, and the exclusive manufacturer of the first superheterodyne sets. The company also created the first...

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Envelope detector

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filtering can be done with a tunable filter or, more practically, a superheterodyne receiver It is more susceptible to noise than a product detector If the...

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Radiofrequency MASINT

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frequency to which a receiver is tuned, from detecting the frequency of the beat frequency oscillator of the superheterodyne receiver. This may also be considered...

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