Inductive degenration

Hi,

I have gone through a lot of material that says that inductive degeneration is the best for stability. I understand it being better than a resistive feedback because of the loss a resistor would introduce. But why is it better than a capacitive degeneration?

If you are referring to FET source degeneration, a small amount of inductance in source ground return will improve the alignment between maximum power gain input match and minimum noise figure match (at expense of some gain loss). This provides better (lower) S11 without degrading noise figure.

If you are referring to base-collector degen, additional feedback capacitance will degrade stability.