Telecommunications. A band of frequencies above or below a carrier frequency, within which lie the frequencies produced by modulation of the carrier.
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| 单词 | θ198276 |
| 释义 | society > communication > telecommunication > [noun] > signal > frequency or band of frequencies > band of frequencies (8) sideband1921 Telecommunications. A band of frequencies above or below a carrier frequency, within which lie the frequencies produced by modulation of the carrier. frequency band1922 = band, n.2 14. passband1922 a frequency band within which signals or light rays are transmitted by a filter or other device without attenuation. waveband1923 a range of (esp. radio) wavelengths or frequencies between specified limits. S-band1946 S-band: the range of microwave frequencies between 1550 and 5200 megahertz, used for radio communication and radar. baseband1952 A frequency band with a lower frequency limit close to zero; the frequency band occupied by an unmodulated signal or by a signal used for… guard band1956 (a) Telecommunications one of the frequency bands on either side of a communication band which serve to protect it from interference from adjacent… vestigial side band1966 Telecommunications. vestigial side band, a side band which is partially attenuated (usually at the higher frequencies) before transmission… |
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