SIDEBAND Meaning and
Definition
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Sideband refers to the range of frequencies that are produced during the modulation process of a carrier signal. In telecommunications, specifically radio and television broadcasting, sideband includes frequencies that are lower or higher than the main or carrier signal. It is an essential component of amplitude modulation (AM) and frequency modulation (FM), which are commonly used methods for transmitting information over long distances.
In AM, sidebands are created by combining a carrier wave with a modulating signal, resulting in two sidebands that are symmetrical to each side of the carrier frequency. These sidebands contain the modulating information, such as the audio or video signal. The lower sideband (LSB) is located below the carrier frequency, while the upper sideband (USB) is located above it.
Similarly, in FM, sidebands are produced by varying the frequency of the carrier wave according to the modulating signal. However, in FM, an infinite number of sidebands are created on both sides of the carrier frequency. The sidebands in FM extend further from the carrier frequency when the amount of modulation increases.
Sidebands are important as they carry the encoded information during the modulation process. They are subsequently separated and decoded at the receiving end to retrieve the original signal. Understanding sideband characteristics and how they interact with the carrier frequency is crucial in designing, analyzing, and optimizing various communication systems.
Common Misspellings for SIDEBAND
- sidebond
- zideband
- xideband
- dideband
- sudeband
- sjdeband
- skdeband
- sodeband
- s9deband
- s8deband
- siseband
- sixeband
- siceband
- sifeband
- sireband
- sieeband
- sidwband
- sidsband
- siddband
- sidrband
Etymology of SIDEBAND
The word "sideband" originates from the field of telecommunications and radio engineering. It is composed of two parts: "side" and "band".
The term "side" refers to the fact that in a transmission, there are two separate frequency components or bands, one on either side of the main carrier frequency. These two bands contain the modulated signal, and their frequencies are higher and lower than the carrier frequency.
The word "band" in this context refers to a range of frequencies that are close together and form a coherent group.
So, when combined, "sideband" essentially describes the bands of frequencies situated on either side of the carrier frequency in a modulated signal.
