Ka band

Common card · No. 263375

The Ka band (pronounced as either "kay-ay band" or "ka band") is a portion of the microwave part of the electromagnetic spectrum. The designation "Ka band" is from Kurz-above, which stems from the German word kurz, meaning "short". There is no standard definition of the Ka band. IEEE Standard letter designations for Radar Bands define the nominal frequency range for the Ka band in the range 27–40 gigahertz (GHz) in Tables 1 and 2 of IEEE Standard 521 i.e. wavelengths from slightly over one centimeter down to 7.5 millimeters. The ITU however approves Ka band satellite networks in the 17.3-31 GHz frequency range, with most Ka band satellite networks having uplinks in the 27.5–31 GHz and downlinks in the 17.7–21.2 GHz range. The band is called Ka, short for "K-above" because it is the upper part of the original (now obsolete) NATO K band, which was split into three bands because of the presence of the atmospheric water vapour resonance peak at 22.24 GHz (1.35 cm), which made the centre...

Read on Wikipedia