millimeter wave
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millimeter wave
[′mil·ə‚mēd·ər ′wāv] (electromagnetism)
An electromagnetic wave having a wavelength between 1 millimeter and 1 centimeter, corresponding to frequencies between 30 and 300 gigahertz. Also known as millimetric wave.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
millimeter wave
Electromagnetic waves with a wavelength from one to 10 millimeters, which corresponds to spectrum from 30 to 300 GHz. Millimeter wave applications include communications, radar, radio astronomy, military and 5G cellular. The higher the frequency, the shorter the wavelength, the narrower the beam and the smaller the antennas. Radio astronomy using millimeter waves dates back to the 1960s, and military deployment began in the 1970s. The first consumer usage was radar-based vehicle collision avoidance in the 1990s.5G Reaches Millimeter Wavelengths
Numerous frequency ranges have been allotted to the 5G cellular system, which include millimeter wave bands (see 5G frequency bands and 5G UWB). See wavelength, microwave, wideband, WiGig and WirelessHD.
FCC SANCTIONED MILLIMETER WAVE BANDSFrequency Range Wavelength Licensed 57-64 GHz V-band 5.3-4.7mm No 76-77 GHz Radar 3.9mm No 71-76 GHz E-band 4.2-4.0mm Yes 81-86 GHz E-band 3.7-3.5mm Yes 92-95 GHz W-band 3.3-3.2mm Yes
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