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K band

 
Sci-Tech Dictionary: K band
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(′kā ′band)

(communications) A band of radio frequencies extending from 10,900 to 36,000 megahertz, corresponding to wavelengths of 2.75 to 0.834 centimeters.
(solid-state physics) An optical absorption band which appears together with an F-band and has a lower intensity and shorter wavelength than the latter.

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Wikipedia: K band
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K band
Frequency Range NATO: 20 – 40 GHz
IEEE: 18 – 27 GHz

ITU Radio Band Numbers

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Contents

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:

  • Ka band: K-above band, 26.5–40 GHz, mainly used for radar and experimental communications.
  • K-band 18-27 GHz
  • Ku band: K-under band, 12–18 GHz, mainly used for satellite communications, terrestrial microwave communications, and radar, especially police traffic-speed detectors.

Infrared astronomy

Atmospheric windows in the infrared. The K band is the transmission window centred on 2.2 microns

In infrared astronomy, the K band refers to an atmospheric transmission window centred on 2.2 microns (in the near-infrared).

Name

The designation "K-band" stems from the German word "kurz" meaning short.[1]

See also

v • d • e
Radio spectrum

ELF
3 Hz
30 Hz

SLF
30 Hz
300 Hz

ULF
300 Hz
3 kHz

VLF
3 kHz
30 kHz

LF
30 kHz
300 kHz

MF
300 kHz
3 MHz

HF
3 MHz
30 MHz

VHF
30 MHz
300 MHz

UHF
300 MHz
3 GHz

SHF
3 GHz
30 GHz

EHF
30 GHz
300 GHz
v • d • e
Electromagnetic spectrum
← shorter wavelengths       longer wavelengths →
Gamma rays · X-rays · Ultraviolet · Visible · Infrared · Terahertz radiation · Microwave · Radio
Visible (optical)
Violet · Blue · Green · Yellow · Orange · Red
Microwaves
W band · V band · Q band · Ka band · K band · Ku band · X band · S band · C band · L band
Radio
EHF · SHF · UHF · VHF · HF · MF · LF · VLF · ULF · SLF · ELF
Wavelength types

References

  1. ^ http://www.itwissen.info/definition/lexikon/K-Band-K-band.html (german)

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

 
 
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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
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