As part of college assignments, I've been asked to explain in detail how certain parameters - informed by the product's manufacturer - of a specific microwave radio system can be measured. Among these parameters, is the receiver's noise figure. Now, I've proposed a measurement diagram like this (from maximintegrated):
Nevertheless, I've been told that this method has a problem, which is that as my DUT is a receiver, it performs demodulation of the microwave input signal and therefore the frequency found at the input of the DUT is different from the one found at the output - I fail to see why this is a problem for this measurement.-
Anyway, the "tip" I was given was to look for the method used by the manufacturer, or the standard applied. Unfortunately, it seems that this information is not provided in the technical description, which I provide below.
Then what I would like to know is how can I overcome this problem of different frequencies at the input/output of the DUT (is it really a problem???) to perform the required measurement.
Link to technical description: Technical description
It's a long document but I believe that the only relevant information in this matter is on page 49, section 8.2.6 "Noise Figure"; and section 7.2 page 39 "Reference Points" which clarifies the points between which the noise figure was measured.
Please note that although I've found related questions to this topic, I could not find any information concerning the frequencies problem I described before.
I will appreciate any help, thanks in advance!