Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
It looks like your "linear gain" value is smaller than the actual small signal gain ?
What you observed is due to the self biasing of the transistor. Increasing the quiescent current the phenomenon should disappear.
If the Gain increases with Input Power, there are some problems such as :Yes, the gain i considered as linear gain is the one at -15dBm
View attachment 147036
Here is a graph of Gain Vs Input power.
Also, an LNA with a gain of 5dB seems hardly worth the effort.
The Output Power is relatively low,I don't think the Gain Expansion occurs.It generally occurs in higher Power Amplifiers.