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K band

ITU Radio Band Numbers

4 5 6 7 8 9 10 11 12

ITU Radio Band Symbols

VLF LF MF HF VHF UHF SHF EHF

NATO Radio bands

A B C D E F G H I J K L M

IEEE Radar bands

HF VHF UHF L S C X K_u K K_a V W

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NATO K band

The NATO K band is defined as a frequency band between 20 and 40 GHz (7.5–15 mm).

IEEE K band

The IEEE K band is a portion of the electromagnetic spectrum in the microwave range of frequencies ranging between 18 and 27 GHz. K band between 18 and 26.5 GHz is absorbed easily by water vapor (H₂O resonance peak at 22.24 GHz, 1.35 cm).

Subdivisions

The IEEE K band is conventionally divided into three sub-bands:

K_a band: K-above band, 27–40 GHz, mainly used for radar and experimental communications.
K-band 18-27 GHz
K_u band: K-under band, 12–18 GHz, mainly used for satellite communications, terrestrial microwave communications, and radars, especially police traffic-speed radars.

Infrared astronomy K band

Infrared astronomers refer to the infrared region around 2.2 micrometres wavelength (136 THz) as K-band.

v • d • e The Electromagnetic Spectrum
(Sorted by wavelength, short to long) Gamma ray • X-ray • Ultraviolet • Visible spectrum • Infrared • Terahertz radiation • Microwave • Radio waves
Visible (optical) spectrum	Violet • Blue • Green • Yellow • Orange • Red
Microwave spectrum	W band • V band • K_a band • K band • K_u band • X band • C band • S band • L band
Radio spectrum	EHF • SHF • UHF • VHF • HF • MF • LF • VLF • ULF • SLF • ELF
Wavelength designations	Microwave • Shortwave • Mediumwave • Longwave

Category: Microwave bands

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "K_band". A list of authors is available in Wikipedia.