Thanks John. So if I measure lets say -100 dBm output noise power @1GHz at the output of the die and I have cable loss connected at the output of die of 3dB @1GHZ. Then the output noise power measured using cable would be -103 dBm?
One more confusion related to this is that why do we have noise figure of a passive device equal to loss of passive device, if the signal and noise both will be attenuated by same amount? won't the signal to noise ration at the input will be equal to signal to noise ratio at the output, hence noise figure unchanged. I am sure I am missing something big here?
Thanks