A three-stage amplifier has stages with the following specifications. Calculate the power gain in decibels, noise figure in decibels, and equivalent noise temperature for the whole amplifier. Stage Power Gain (dB) Noise Factor 1 10 3 2 18 4 3 15 5 If stage 1 and 3 (in the previous problem) were interchanged, what will happen to the (a) total power gain, (b) noise figure and (c) equivalent noise temperature? Explain why these values (gain, NF, Teq) were increased, decreased or unchanged.

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A three-stage amplifier has stages with the following specifications. Calculate the power gain in
decibels, noise figure in decibels, and equivalent noise temperature for the whole amplifier.
Stage Power Gain (dB) Noise Factor
3
1
10
18
4
3
15
If stage 1 and 3 (in the previous problem) were interchanged, what will happen to the (a) total power
gain, (b) noise figure and (c) equivalent noise temperature? Explain why these values (gain, NF,
Teq) were increased, decreased or unchanged.
Transcribed Image Text:A three-stage amplifier has stages with the following specifications. Calculate the power gain in decibels, noise figure in decibels, and equivalent noise temperature for the whole amplifier. Stage Power Gain (dB) Noise Factor 3 1 10 18 4 3 15 If stage 1 and 3 (in the previous problem) were interchanged, what will happen to the (a) total power gain, (b) noise figure and (c) equivalent noise temperature? Explain why these values (gain, NF, Teq) were increased, decreased or unchanged.
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