Explain Satellite communication with neat diagram

Explain Satellite communication with neat diagram
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Answer :

SATELLITE COMMUNICATION: In satellite communication, signal transferring between the sender and receiver is done with the help of satellite. In this process, the signal which is basically a beam of modulated microwaves is sent towards the satellite called UPLINK (6 Ghz). Then the satellite amplifies the signal and sent it back to the receiver‟s antenna present on the earth‟s surface called as DOWNLINK (4Ghz), as shown in the diagram given 

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As the entire signal transferring is happening in space. Thus this type of communication is known as space communication. The satellite does the functions of an antenna and the repeater together. If the earth along with its ground stations is revolving and the satellite is stationery, the sending and receiving earth stations and the satellite can be out of sync over time. Therefore Geosynchronous satellites are used which move at same RPM as that of the earth in the same direction. So the relative position of the ground station with respect to the satellite never changes. However 3 satellites are needed to cover earth‟s surface entirely.


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Frequency band used in satellite communication:

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Application of satellite:

Satellite television

digital cinema

satellite radio

satellite internet access

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