I'm trying to design a LNA at GPS L1 band frequency. To stabilize the amplifier, I put a 20 ohm resistor after the transistor. The stability factor is about 1.4, which I think is close to 1.0. So should I give it more budget for real fabrication? (for example make it larger than 2) Or is it okay to just keep it like this?(Cuz I found that If I want to make the stability factor larger, I have to put a smaller resistor here and the maximum gain will drop a lot.)
Also, for a 3V Vce, I think this resistor is going to consume about 0.4 W of power, is it going to generate too much heat?(I saw people usually put 50, 100 or larger here. I don't have any idea about the heat in real case.)