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RECEIVER ANALYSIS
Cascade analysis
Arrange the receive chain in signal order and calculate overall gain and cascaded noise figure.
Total gain33.00 dBNoise figure2.11 dB
SIGNAL CHAIN
Stages
OrderStageGainNoise figure
01
02
03
04
FRIIS NOISE EQUATION
F = F₁ + (F₂−1)/G₁ + (F₃−1)/(G₁G₂) + …
Gains and noise factors are converted to linear values before the cascade is evaluated. Stage order matters: early gain suppresses the noise contribution of later stages.