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2.4. A receiver is made up of three cascaded stages each with a gain of 10 dB and each with a noise figure of 3 dB. a. Calculate the overall noise figure. b. Calculate the overall noise figure if only the input stage degrades so that its noise figure becomes 6 dB. c. Calculate the overall noise figure if only the output stage degrades so that its noise figure becomes 6 dB. Discuss the reason that your answer is smaller than in Part (b).

2.4. A receiver is made up of three cascaded stages each with a gain of 10 dB and each with a noise figure of 3 dB. a. Calculate the overall noise figure. b. Calculate the overall noise figure if only the input stage degrades so that its noise figure becomes 6 dB. c. Calculate the overall noise figure if only the output stage degrades so that its noise figure becomes 6 dB. Discuss the reason that your answer is smaller than in Part (b).

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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2.4. A receiver is made up of three cascaded stages each with a gain of 10 dB and each with a noise figure of 3 dB. a. Calculate the overall noise figure. b. Calculate the overall noise figure if only the input stage degrades so that its noise figure becomes 6 dB. c. Calculate the overall noise figure if only the output stage degrades so that its noise figure becomes 6 dB. Discuss the reason that your answer is smaller than in Part (b).
Transcribed Image Text:2.4. A receiver is made up of three cascaded stages each with a gain of 10 dB and each with a noise figure of 3 dB. a. Calculate the overall noise figure. b. Calculate the overall noise figure if only the input stage degrades so that its noise figure becomes 6 dB. c. Calculate the overall noise figure if only the output stage degrades so that its noise figure becomes 6 dB. Discuss the reason that your answer is smaller than in Part (b).
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