GVVIN
Advanced Member level 4
One of the method of measuring NF is the gain method using a spectrum analyser. I have a few queries.
1. Will the measurement go wrong if I put internal attenuators.
2. Will spectrum analyser noise figure come in the calculation of NF of DUT.
what is the formula for NF calculation.
NF (DUT) = 10 log10 (measured noise floor with DUT)- 174 -10log10 (RBW)-10log10 (gain of DUT).
Is this correct.
Gain method has limitation like gain should be high and Measured NF should be high > 10 for accurate measurement.
Thanks in advance
Regards
GV
1. Will the measurement go wrong if I put internal attenuators.
2. Will spectrum analyser noise figure come in the calculation of NF of DUT.
what is the formula for NF calculation.
NF (DUT) = 10 log10 (measured noise floor with DUT)- 174 -10log10 (RBW)-10log10 (gain of DUT).
Is this correct.
Gain method has limitation like gain should be high and Measured NF should be high > 10 for accurate measurement.
Thanks in advance
Regards
GV