Can I measure NF of LNA with SA?

In theory yes but the SA noise figure must be much less than the LNA (not likely).

R&S have some SW that can be installed on their VSA , and this can measure the noise figure , but the best way is to use the NF meter for accurate results

khouly

Hi,

It's very difficult to achieve accurate NF measurements with SA only.
I suggest to use the Y factor method of noise figure measurement. For details, refer to the following link:
http://cp.literature.agilent.com/lit...5952-3706E.pdf

I hope this helps.

Yes, but you will need a low noise pre-amp.

you can measure it using SA with a SNS(small noise source)

my SA have a preAmp that with enabling it my SA can measure down to -130dBm.

Can I use this preAMP to measure NF? How can I do the measurement?

http://cp.literature.agilent.com/lit...988-8571EN.pdf

yes , y can ,and y need to do some calculation

Yes,but the results are not accurate