The
Ka band (Pronounced: "Kay-A Band") covers the frequencies of 26.5-40GHz. The K
a band is part of the
K band-NATO K band:The NATO K band is defined as a frequency band between 20 and 40 GHz .-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...
of the
microwaveMicrowaves are electromagnetic waves with wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300MHz and 300 GHz. This is an extremely broad definition including both UHF and EHF , and various sources use different boundaries...
band of the
electromagnetic spectrumThe electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. The "electromagnetic spectrum" of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object....
. This symbol refers to "K-above" — in other words, the band directly above the K-band. The so-called 30/20 GHz band is used in
communications satelliteA communications satellite is an artificial satellite stationed in space for the purpose of telecommunications...
s,
uplinkA telecommunications link is generally one of several types of information transmission paths accomplished by communication satellites to connect two points on earth.-Uplink:...
in either the 27.5 GHz and 31 GHz bands, and high-resolution, close-range targeting
radarsRadar is an object detection system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. The term RADAR was coined in 1941 as an acronym for RAdio Detection And...
aboard military airplanes.
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The
Ka band (Pronounced: "Kay-A Band") covers the frequencies of 26.5-40GHz. The K
a band is part of the
K band-NATO K band:The NATO K band is defined as a frequency band between 20 and 40 GHz .-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...
of the
microwaveMicrowaves are electromagnetic waves with wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300MHz and 300 GHz. This is an extremely broad definition including both UHF and EHF , and various sources use different boundaries...
band of the
electromagnetic spectrumThe electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. The "electromagnetic spectrum" of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object....
. This symbol refers to "K-above" — in other words, the band directly above the K-band. The so-called 30/20 GHz band is used in
communications satelliteA communications satellite is an artificial satellite stationed in space for the purpose of telecommunications...
s,
uplinkA telecommunications link is generally one of several types of information transmission paths accomplished by communication satellites to connect two points on earth.-Uplink:...
in either the 27.5 GHz and 31 GHz bands, and high-resolution, close-range targeting
radarsRadar is an object detection system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. The term RADAR was coined in 1941 as an acronym for RAdio Detection And...
aboard military airplanes. Some frequencies in this radio band are used for vehicle speed detection by law enforcement.
Kepler MissionThe Kepler Mission uses a NASA space telescope designed to discover Earth-like planets orbiting other stars. With a planned mission lifetime of at least 3.5 years, Kepler will use a photometer developed by NASA to continuously monitor the brightness of over 100,000 stars in a fixed field of view...
uses this frequency range to downlink the scientific data collected by the space telescope.
The designation "K
a-band" is from Kurz-above, which stems from the German word "kurz" meaning
short.