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Q band

Waveguide Q band
Frequency range
33 to 50 GHz
Related bands

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The Q band of the microwave part of the electromagnetic spectrum ranges from 33 to 50 GHz, corresponding to the recommended frequency band of operation of WR22 waveguides. These frequencies are equivalent to wave lengths between 9 mm and 6 mm. The Q band is in the EHF range of the radio spectrum. It sits above, and partly overlaps with, the U.S. IEEE designated Ka band (26.5 to 40 GHz).[1] It sits below the U.S. IEEE designated V band (50–75 GHz) in frequency.[1]

The Q band is mainly used for satellite communications, terrestrial microwave communications and for radio astronomy studies such as the QUIET telescope. It is also used in automotive radar and in radar investigating the properties of the Earth's surface.[2]


  1. ^ a b "521-2002 - IEEE Standard Letter Designations for Radar-Frequency Bands". IEEE. 2003-01-14. doi:10.1109/IEEESTD.2003.94224. Retrieved 2014-02-03. (subscription required (help)). 
  2. ^ Atanassov, VB and Balan, MG and Haimov, SJ and Kulemin, GP and Michalev, MA and Mladenov, L.H. and Pedenko, Y.A. and Razskazovsky, VB and Savchenko, AK and Vasilev, VL (1990). "Experimental study of nonstationary X-and Q-band radar backscattering from the sea surface". Radar and Signal Processing, IEE Proceedings F 137 (2): 118–124. doi:10.1049/ip-f-2.1990.0017.