Electronics and Communication Engineering - Satellite Communication - Discussion
Discussion Forum : Satellite Communication - Section 1 (Q.No. 23)
23.
At present, the radio-frequency band mainly used by most satellites is
Discussion:
5 comments Page 1 of 1.
Sudip nepal said:
1 decade ago
Super High Frequency Band: 3 Ghz to 30 Ghz.
Jagadish said:
9 years ago
SHF - Super High-Frequency Band: 3 Ghz to 30 Ghz.
(1)
Amul said:
9 years ago
Why not other three options?
Vignesh Ponraj said:
7 years ago
Because for a signal to escape earth it has to have frequency above 250 MHz. Anything less than that will be reflected back to earth or absorbed by the ionosphere.VHF is below 3 to 300 MHz.
Now that leaves us with three choices UHF SHF and EHF.
UHF is used for mobile communications. EHF is difficult to generate and requires lot of power to operate. So, SHF is only frequency range which is economical and viable.
Now that leaves us with three choices UHF SHF and EHF.
UHF is used for mobile communications. EHF is difficult to generate and requires lot of power to operate. So, SHF is only frequency range which is economical and viable.
Jay said:
7 years ago
Super High frequncy Band ia 3Ghz to 30Ghz.
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