Encyclopedia > Cutoff frequency

Article Content

Cutoff frequency

In telecommunication, the term cutoff frequency has the following meanings:

1. The frequency either above which or below which the output of a circuit, such as a line, amplifier, or filter, is reduced to a specified level.

2. The frequency below which a radio wave fails to penetrate a layer of the ionosphere at the incidence angle required for transmission between two specified points by reflection from the layer.

Source: from Federal Standard 1037C and from MIL-STD-188

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Thomas a Kempis

... Christian woman who remained steadfast under a great stress of afflictions, and biographies of Groote, Radewijns, and nine of their companions. Works similar i ...