The transmitter-receiver combination in the satellite is known as a:
Correct answer: C. Transponder
- A. Up link
- B. Repeater
- C. Transponder
- D. Duplexer
Explanation
A transponder is a transmitter and receiver combination specifically designed for satellites. It receives the signal transmitted from a ground station (uplink), amplifies it, and then transmits it back down to Earth at a different frequency (downlink). This frequency difference helps to prevent interference between the uplink and downlink signals. The transponder can also perform other functions such as filtering and frequency translation to ensure compatibility with different communication protocols. In essence, the transponder acts as the heart of the communication process for a satellite, enabling it to receive, process, and retransmit signals.
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