Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 9 (Q.No. 48)
48.
If each stage has a gain of 10 dB and noise figure of 10 dB, then the overall noise figure of a two stage cascade amplifier will be
10
1.09
1.0
10.9
Answer: Option
Explanation:

Overall noise figure F of the system is

F = F1 +

F1 = F2 = 10 dB = 10 in absolute units

g = 10 dB = 10 in absolute units

F = 10 + = 10.9 .

Discussion:
1 comments Page 1 of 1.

Amit kumar said:   6 years ago
Thanks for the solution.

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