Bias voltage of the LNA?

Dear all,

Actually, the LNA transistor should bias at the linear region or the saturation region?

As I know, the transistor in the linear region, it could give out a high gain and low linearity. If the transistor in the saturation region, it could give out a low gain and high linearity. Am I right? Also, why the linearity will like this?

Best Regards

wccheng

u must have the MOS in sat region as only then can u use the usual model for acheving the input impedance matching.

saturation will make your LNA stable because it's current and other parameters are fixed!

better bias the LNA at saturate region!

:D