side frequencies

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Side Frequencies

 

(in radio engineering), the frequencies of oscillations that appear along with the principal (carrier) frequency ω when the oscillations are modulated. They differ from the carrier frequency by a value that is either equal to or a multiple of the frequency of the modulating signal Ω. In the case of amplitude modulation or frequency modulation the side frequencies are symmetrically disposed on both sides of the carrier frequency.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

side frequencies

A carrier frequency plus or minus an audio frequency.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved