Frequency Bands Suitable for Satellite Communications
ITU defines frequency bands, which are used for satellite communications.This article UIY will introduce the frequency bands suitable for satellite communication.
UHF (Ultra High Frequency) or decimeter wave frequency band, the frequency range is 300MHz-3GHz.This frequency band corresponds to IEEE UHF (300MHz-1GHz), L (1-2GHz), and S (2-4GHz) frequency bands.
UHF frequency band radio waves are close to the line-of-sight propagation, easily blocked by mountains and buildings, etc., and indoor transmission attenuation is relatively large.
SHF (Super High Frequency) or centimeter wave frequency band, the frequency range is 3-30GH.This frequency band corresponds to IEEE S (2-4GHz), C (4-8GHz), Ku (12-18GHz), K (18-27GHz) and Ka (26.5-40GHz) frequency bands.
Decimeter waves have a wavelength of 1cm-1dm, and their propagation characteristics are close to light waves.
EHF (Extremely High Frequency) or millimeter wave frequency band, the frequency range is 30-300GHz.This frequency band corresponds to IEEE's Ka (26.5-40GHz), V (40-75GHz) and other frequency bands.
Developed countries have begun plans to use 50/40GHz Q/V frequency bands at gateways of the high-capacity fixed-satellite service (HDFSS) when Ka-band resources are also becoming tight.
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