Q: What is the purpose of a Low Noise Amplifier (LNA) in communication systems?

A To amplify weak signals with minimal added noise
B To filter out unwanted frequencies
C To convert AC to DC
D To modulate signals for transmission

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Answer: A

Explanation:

A Low Noise Amplifier (LNA) is designed to amplify weak signals received by an antenna while adding minimal noise to the signal. LNAs are crucial in enhancing signal quality and sensitivity in communication systems, especially in applications like satellite communications, radio astronomy, and wireless networks. By boosting weak signals without significantly increasing noise, LNAs improve the overall performance and reliability of communication systems, ensuring clear and strong signal reception.

Electronic Devices and Communication System

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Q: What is the purpose of a Low Noise Amplifier (LNA) in communication systems?

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