sideband

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sideband,

any frequency component of a modulated carrier wave other than the frequency of the carrier wave itself, i.e., any frequency added to the carrier as a result of modulationmodulation,
in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in accordance with an information-bearing signal wave (the modulating wave); demodulation is the process by which the original signal is recovered from the wave
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; sidebands carry the actual information while the carrier contributes none at all. Those frequency components that are higher than the carrier frequency are know as upper sidebands; those lower are called lower sidebands. The upper and lower sidebands contain equivalent information; thus only one needs to be transmitted. Such single-sideband signals are very efficient in their use of the frequency spectrum when compared to standard amplitude modulation (AM) signals. See radioradio,
transmission or reception of electromagnetic radiation in the radio frequency range. The term is commonly applied also to the equipment used, especially to the radio receiver.
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.

sideband

[′sīd‚band]
(electromagnetism)
The frequency band located either above or below the carrier frequency, within which fall the frequency components of the wave produced by the process of modulation.
The wave components lying within such bands.

sideband

sidebandclick for a larger image
sidebandclick for a larger image
A range of frequencies occupied by the spectral components resulting from the modulation of a carrier wave by a signal. The frequency of the upper sideband is the sum of the carrier frequency and the audio frequencies used to modulate the carrier, whereas the lower sideband is the difference between the carrier frequency and the audio frequencies used to modulate the carrier.

sideband

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.
References in periodicals archive ?
In the weak interaction system, one phonon process is dominant in the phonon side band absorption so that the energy difference between the zero-phonon hole and its pseudo-phonon side hole reflects the energy of a phonon mode, i.
2) Acer Smart Console to allow side band and out of band remote control of the server.
A brushed, carbon fiber finish, spun metal, and textured side band create a sleek and slim look.
Pearl Jam guitarist Stone Gossard's loose, groove-oriented side band, Brad, may make a second album this year.
Digital and HDTV signals, currently found in the UHF band, are transmitted in Eight Vestigial Side Band (8VSB) format.
Its tuner receives analog AM/FM as well as HD Radio AM/FM including side band HD channels.
Zenith, a pioneer in consumer electronics and long- time HDTV technology leader, developed the "VSB" or vestigial side band digital transmission system at the heart of the ATSC DTV broadcast standard adopted by the FCC.
ATI's NXT2003(TM) is the only single-chip vestigial side band (VSB)/unidirectional cable plug-and-play receiver in the world.
The port return loss is also low and the carrier as well as the side band suppression are excellent (down to -40 dB) whilst all I/O ports have a 50 Ohm impedance.
The system works on an FM side band radio signal which utilizes RDS (Radio Data Service) technology.
Specifications on the AOpen PA305 include 16 Mbytes synchronous memory, Direct3D acceleration, video acceleration for DirectDraw MPEG-1 and MPEG-2, plus AGP 2X with full side band function.