In satellite communication, a communication satellite functions as a repeater between which of the following?
Electronics and Communication Engineering
Satellite Communication
Difficulty: Easy
Choose an option
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AA transmitting station and a receiving station
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BA transmitting station and many receiving stations
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CMany transmitting stations and many receiving stations
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DNone of these
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EOnly two satellites in orbit
Answer
Correct Answer: Many transmitting stations and many receiving stations
Explanation
Introduction / Context:A communication satellite is essentially a repeater located in space, receiving signals from Earth stations and retransmitting them back over a wide area. This enables global connectivity and broadcasting.
Given Data / Assumptions:
- Satellites operate with transponders (receivers + transmitters).
- They receive uplink signals and retransmit on downlink frequencies.
- Service multiple geographically dispersed users simultaneously.
Concept / Approach:Satellites act as bent-pipe repeaters, enabling many-to-many communication. One satellite can handle numerous uplinks and distribute them to many receivers, depending on its transponder capacity.
Step-by-Step Solution:
Earth station A uplinks signal.Satellite transponder shifts frequency and amplifies.Downlink distributed to multiple receiving stations worldwide.Verification / Alternative check:
Broadcast TV via satellites confirms many-to-many role.Why Other Options Are Wrong:
Single transmitter-receiver link ignores satellite's multipoint capability.One-to-many applies to broadcasting only, not general communication.None of these: invalid since satellites clearly act as repeaters.Common Pitfalls:
Thinking satellites only support one-to-one links, ignoring multiplexing and transponders.Final Answer:
Many transmitting stations and many receiving stations