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Radio Frequency (RF) basics
This is a simple tutorial to present fundamentals to characterize radio receiver performance.
Following characteristics of a receiver are discussed in detail in this section:
It is the ratio of Signal power to Noise power.
Noise Factor is ratio of input SNR to the output SNR of a receiver.
Noise Figure is a measure of degradation of SNR when a signal passes through a system.
If there is no noise (ideal) in a system then we will have following:-
F = 1
NF = 0
So, NF is always greater than or equal to 1
SNR = Signal Power / Noise
F = SNRin / SNRout
