Formulae

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Fundamental Noise Figure equations
Standard
F=1+Te/To ( Te-effective noise temp referred to input, To-290K )
Cascaded
F=F1 +(F2-1)/G1+(F3-1)/G1*G2+(F4-1)/G1*G2*G3+...
(F1,G1; F2,G2; are respectively standard noise figure and power gain for successive stages )
dB Relationships
V Gain dB =20Log Vout/Vin
P Gain dB =10n log Pout/Pin
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