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Ku-band vs c-band merits and demerits of Ku band,C band VSAT


This page on Ku-band vs C-band VSAT describes merits and demerits of KU band and C band VSAT systems. It compares both Ku band and C band VSAT types and mentions difference between them. Refer satellite tutorial covering following sub topics:
Main Satellite Tutorial   About satellite   Bands   Parts   Orbits   Services   Types   capacity allocations   network configurations   Applications   Remote sensing   VSAT basics  


Ku Band VSAT

The frequency band 12.5 GHz to 18 GHz is referred as Ku Band. The VSAT which operates in this band is known as Ku Band VSAT. Following frequencies are used in uplink and downlink in Ku band VSAT.

Up Link Frequency: 14 to 14.5 GHz
Down Link Frequency: 10.95 to 11.7 GHz

C Band VSAT

The frequency band 4 to 8 GHz is referred as C Band. The VSAT which operates in this band is known as C Band VSAT. Following frequencies are used in uplink and downlink in C band VSAT.

Up Link Frequency: 5.925 to 6.425 GHz
Down Link Frequency: 3.7 to 4.2 GHz

REFER VSAT article➤➤ which covers basic VSAT System Block Diagram, VSAT installation Procedure and more.

Following table mentions difference between Ku band and C band with respect to merits (benefits) and demerits (Drawbacks).


KU Band VSAT C Band VSAT
merits (benefits) • It allows use of smaller dish antennas.
• High transponder power is available.
• Incurs less terrestrial interference.
• Signals are less susceptible to rain fading. Attenuation is in the range from 0.4 to 1 dB only.
• High transponder power is widely available.
• Wider and even global beam coverage. This results into more number of C band VSATs coverage by C Band Satellite.
demerits (Drawbacks) • Signals are susceptible to fading during rain. Attenuation is in the range from 6 to 10 dB.
•  High transponder power is not available everywhere.
•  Narrower beam coverage and hence less coverage area is covered. This results into less number of Ku band VSAT coverage by Ku band Satellite.
• Needs slightly larger dishes compare to Ku band.
• Needs lower transponder power for operation.
• Higher likelihood of terrestrial interference.

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