Bandwidth

Bandwidth refers to the width, usually measured in Hertz, of a frequency band. It can also be used to describe a signal, in which case the meaning is the width of the smallest frequency band within which the signal can fit.

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The term Bandwidth is also used, informally, and by extension from the above, to mean the amount of data that can be transferred through a connection in a given time period. Bandwidth is normally based on the frequencies used and the spectral spread of the information caried on the frequency.

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See also:

• Shannon's law
• modulation
• [signalling schemes]?
• [baud rate]?