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 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.