Sideband meaning

sīd'bănd'
Either of the two bands of frequencies, one just above and one just below a carrier frequency, that result from modulation of a carrier wave.
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The frequency or frequencies on either side of a carrier frequency that are generated by the process of modulation of the carrier.
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In radio communications, a signal that results from amplitude modulating a carrier frequency. The upper sideband is the carrier plus modulation, and the lower sideband is the carrier minus modulation, which are mirror images of each other. See single sideband.
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The band of frequencies, above or below the carrier, created by the process of modulation. The sidebands have considerable value in certain transmission techniques, such as single sideband (SSB), double sideband (DSB), and vestigial sideband (VSB). See also carrier, DSB, frequency, modulate, SSB, and VSB.
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The band of frequencies each side of the frequency of a carrier wave; formed as a result of modulation of the carrier.
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Origin of sideband