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Communication satellite is an artificial satellite that relays radio telecommunications . The transponder, which is located at different places on the earth, creates an information channel between the receivers. Communications satellites are used for television , telephone , radio , internet , and military purposes. There are currently over 2,000 communications satellites in various orbits being used by various government and non-government organizations.
The wireless communication system uses electromagnetic waves to transmit signals. The origin of these waves in order to travel to the destination, both to each other seems to be the line (drgrekha - the line of the site) should be. These are then interrupted by the curvature of the spherical earth. The communications satellite receives these signals from the source (since both are in sight) and sends them back to the destination (since both are in sight). So that the information signals overcome the ground curve.
Communication satellites use a wide range of radio and microwave frequencies. There are rules for which companies can use which frequency bands to keep different signals from interfering with each other. The interference of signals is greatly reduced due to the allocation of these bands
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