System Noise Figure

When we add a preamplifier to our analyzer, the system noise figure and
sensitivity improve. However, we have accounted for the 2.5 dB factor in our
definition of NF SA(N), so the graph of system noise figure becomes that of
Figure 5-8. We determine system noise figure for noise the same way that we
did previously for a sinusoidal signal.




Figure 5-8. System noise figure for noise signals

Related Links

Spectrum_Noise_signal
Spectrum_System_noise_figure
Spectrum_Random_noise_Gaussian_amplitude_distribution
Spectrum_Rayleigh_distribution
Spectrum_Preamplifier_noise_measurements