Concept information
Preferred term
millimetric wave
Definition(s)
- Extremely high frequency (EHF) is the International Telecommunication Union (ITU) designation for the band of radio frequencies in the electromagnetic spectrum from 30 to 300 gigahertz (GHz). It lies between the super high frequency band and the far infrared band, the lower part of which is the terahertz band. Radio waves in this band have wavelengths from ten to one millimetre, so it is also called the millimetre band and radiation in this band is called millimetre waves, sometimes abbreviated MMW or mmWave. Millimetre-length electromagnetic waves were first investigated by Indian physicist Jagadish Chandra Bose, who generated waves of frequency up to 60 GHz during experiments in 1894–1896. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Extremely_high_frequency)
Broader concept(s)
Synonym(s)
- EHF
- extreme high frequency
In other languages
-
French
-
EHF
-
extrême haute fréquence
URI
http://data.loterre.fr/ark:/67375/MDL-DDCLHP63-L
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