Question

find the noise factor for an antenna at 27 c with equivalent noise temperature 30 k

Answer 1

Noise factor is given by ,
$\bold{F_n=\frac{T_e}{T_0}+1}$
Here $T_e$ is the equivalent noise temperature and $T_o$ is the temperature of antenna .

Here given ,
$T_o$ = 27°C = 300K
$T_e$ = 30K

Now, noise factor ,Fn = 30/300 + 1 = 0.1 + 1 = 1.1

Answer 2

Hi,

Please see the attached file !



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