Hi,
I get stuck with noise calculation. Now, I am reading an application note about LNA.
Here is the link:
http://www.maximintegrated.com/app-notes/index.mvp/id/3169Could you please help me explain this part in more detail?
It is an excerpt from that note.
It is assumed that noise from the source is uncorrelated with noise from the two-port network. Thus, noise power is proportional to the mean square of the short-circuit current (denoted by active-low Isc²) at the input port of the noise-free amplifier; and noise power due to the source alone is proportional to the mean square of the source current (active-low Is²).