Noun
intermediate frequency (plural intermediate frequencies)
(radio) A frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception; generally associated with superheterodyne receivers.
In this circuit, the incoming radio frequency signal from the antenna is mixed with a signal from a local oscillator and converted by the heterodyne technique to a somewhat lower fixed frequency signal called the intermediate frequency (IF). Source: Internet
Signal reception is invariably done via a superheterodyne receiver : the first stage is a tuner which selects a television channel and frequency-shifts it to a fixed intermediate frequency (IF). Source: Internet
Spreading of the spectrum line caused by phase noise must be minimised in the local oscillator for a superheterodyne receiver because it defeats the aim of restricting the receiver frequency range by filters in the IF (intermediate frequency) amplifier. Source: Internet
He termed this the " intermediate frequency " often abbreviated to "IF". Source: Internet
Image rejection is an important factor in choosing the intermediate frequency of a receiver. Source: Internet
Intermediate frequency amplifier The stages of an intermediate frequency amplifier ("IF amplifier" or "IF strip") are tuned to a fixed frequency that does not change as the receiving frequency changes. Source: Internet