I now have a LNA file for s2p format , but can't judge the best point for Gain and NF . Sorry , Could you provide some
instances for it for my understanding?
Thanks.
first download a Appcadsoftware
and then select circuit design.
Open you *.s2Pfile from them
input the item you want to know.
finally you can see best point is you design target(no need to exactly meet it ,as near as you can)
I knew what you mentioned above , but what i mean is how to realize the best point ( or as near as it) on plot , such as matching according to its Z, it can be done in APPCAD ?