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Noise figure measurement from 2.4GHz to 2MHz

Question asked by Scott227 on Jan 29, 2008
Latest reply on Jan 31, 2008 by RayH
Our company had one ESA and noise figure personality.
Our new design has 2MHz IF frequency and we want to measure
the total noise of our downconverter from RF(2.4GHz) to IF(2MHz).

Because our old noise source only supports from 10MHz to 18GHz(NC346 model). Do you have any suggestion about the noise figure measurement
From 2.4GHz to 2MHz?

How to do the calibration?
Do we need additional noise source for frequency lower than 10MHz?