Dear Students, Basically, Satellite can be defined as a heavy object which goes around another object in space due to the effect of mutual gravitational force or in other words SATELLITE is a microwave repeater in the space. One of the basic need for introducing satellite was when two stations on earth want to communicate through radio broadcast but are too far away to use conventional means. This video will help you to understand about the basic block diagram of satellite communication and basic block diagram of transmitting and receiving earth stations.