The Ka band (kurz-above band) is a portion of the K band of the microwave band of the electromagnetic spectrum. Ka band roughly ranges from 18 to 40 GHz. The 20/30 GHz band is used in communications satellites, downlink 18.3–18.8 GHz and 19.7–20.2 GHz. The term Ka band is frequently used to refer to the recommended operating frequencies of WR-28 rectangular waveguide, which is 26.5 to 40.0 GHz.
The 20/30 GHz band is used in communications satellites, downlink 18.3–18.8 GHz and 19.7–20.2 GHz, and high-resolution, close-range targeting radars aboard military airplanes.
band” is frequently used to refer to the recommended operating frequencies of WR-28 rectangular waveguide, which is 26.5 to 40.0 GHz.
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