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intermediate frequency

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noun Radio.
  1. the middle frequency in a superheterodyne receiver, at which most of the amplification takes place. Abbreviation: if
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Origin of intermediate frequency

First recorded in 1920–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for intermediate frequency

Historical Examples

  • This is spoken of either as the “super-heterodyne” or as the “intermediate-frequency amplification” method of reception.

    Letters of a Radio-Engineer to His Son

    John Mills

  • The system of intermediate-frequency amplification solves the difficulty and we shall see how it does so.


British Dictionary definitions for intermediate frequency

intermediate frequency

noun
  1. electronics the frequency to which the signal carrier frequency is changed in a superheterodyne receiver and at which most of the amplification takes place
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012