Definition of intermediate frequency in US English:

intermediate frequency


  • The frequency to which a radio signal is converted during heterodyne reception.

    • ‘TV detection works by detecting leakage from the receiver of the oscillator used to convert the received frequency down to the intermediate frequency used inside the receiver.’
    • ‘The center frequency of the output range is called the intermediate frequency, or IF.’
    • ‘The components are connected using an intermediate frequency that carries both power and data.’
    • ‘In other words, depending on these intermediate frequencies, the bandpass filter circuit as well as the center frequency of the detecting circuit can be changed.’
    • ‘When it comes time to perform an alignment on a Model 90 receiver, there has been a great deal of confusion over the years concerning the proper intermediate frequency to be used.’