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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 intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. It was long believed to have been invented by US engineer Edwin Armstrong, but after some controversy the earliest patent for the invention is now credited to French radio engineer and radio manufacturer Lucien Lévy. Virtually all modern radio receivers use the superheterodyne principle.

Superheterodyne receiver - Wikipedia Jump to content From Wikipedia, the free encyclopedia Type of radio receiver A five-tube superheterodyne receiver manufactured by Toshiba circa 1955 Superheterodyne transistor radio circuit circa 1975 The superheterodyne receiver , commonly called the superhet , is a radio receiver that uses heterodyning to convert incoming radio-frequency (RF) signals to a fixed intermediate frequency (IF). The signal is then amplified and filtered at that fixed frequency. This arrangement separates tuning from most of the gain and filtering: the RF circuits make an initia

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