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 ?
Generally, a PHB hole consists of three parts (6), that is, a zero-phonon hole, which is a sharp hole emerging at the irradiation frequency and which is create by a photoreactive guest molecule whose zero-phonon line exists at the laser frequency; a phonon side hole, which possesses a broad hole emerging at the higher energy side of zero-phonon hole and which is created by the phonon side band of the same guest molecule that produces the zero-phonon hole; and finally a pseudo-phonon hole, which is a broad hole emerging at the lower energy side o the zero-phonon hole and which is created by molecules whose phonon side band exists at the laser frequency.
Mahanti, "Minimization of side lobe level and side band radiation of a uniformly excited time modulated linear antenna array by using artificial bee colony algorithm," Proceedings of IEEE Symposium on Industrial Electronics and Applications (ISIEA 2011), 247-250, Sep.
In a bid to boost communication system especially during disasters in the province, Provincial Disaster Risk Reduction & Management (PDRRM) Council moves to restore the single side band (SSB) radio system.
his side band with producer Jacknife Lee, he is reported to be working on other musical projects as well as co-producing a film about the life of Terri Hooley, the man behind the Undertones and The Outcasts.
We were involved in a side band called The Lovemongers, Nancy has done a lot of soundtrack work and released a solo album, and we both toured on our own.
m] are kept constant, and the VCO frequency is changed over its range from its low value to its high value, or vice versa, the side band level relative to the carrier will change.
NXP's KL8x family of microcontrollers, now available from Mouser Electronics, extends the Kinetis microcontroller portfolio with advanced security capabilities including support for public key cryptography and hardware Advanced Encryption Standard (AES) acceleration with side band attack protection while maintaining a high level of compatibility with previous Kinetis devices, enabling lower power and cost migration path with the same level of security.
Single side band phase noise in 1Hz bandwidth is measured relative to the carrier power at a given offset from the carrier frequency and is expressed as dBc/Hz, as illustrated in Figure 3 (Mini-Circuits models POS-1025 or JTOS-1025).