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1. You use power meter at a receiver with no signal measure a received noise power level of -110 dBm. This is the background noise. You now turn on the signal source and observe that the total power (including the noise power which is independent of the signal power) is -107 dBm. a. What is the actual signal power in dBm? b. What is the signal to noise ratio in dB? c. What is the total received signal plus noise power in W

1. You use power meter at a receiver with no signal measure a received noise power level of -110 dBm. This is the background noise. You now turn on the signal source and observe that the total power (including the noise power which is independent of the signal power) is -107 dBm. a. What is the actual signal power in dBm? b. What is the signal to noise ratio in dB? c. What is the total received signal plus noise power in W

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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1. You use power meter at a receiver with no signal measure a received noise power level of -110 dBm. This is the background noise. You now turn on the signal source and observe that the total power (including the noise power which is independent of the signal power) is -107 dBm. a. What is the actual signal power in dBm? b. What is the signal to noise ratio in dB?. c. What is the total received signal plus noise power in W d. The S+N (-107 dBm) output goes through an amplifier with a power gain of 200 (not in dB). What is the total output power of the amplifier in dBm assuming the Noise figure of the additional amplifier is 0 dB?
Transcribed Image Text:1. You use power meter at a receiver with no signal measure a received noise power level of -110 dBm. This is the background noise. You now turn on the signal source and observe that the total power (including the noise power which is independent of the signal power) is -107 dBm. a. What is the actual signal power in dBm? b. What is the signal to noise ratio in dB?. c. What is the total received signal plus noise power in W d. The S+N (-107 dBm) output goes through an amplifier with a power gain of 200 (not in dB). What is the total output power of the amplifier in dBm assuming the Noise figure of the additional amplifier is 0 dB?
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