Hi,


there are many papers on IEEExplore which discuss the Q of an inductor and they are worth reading. Also, if you want the best Q factor for your inductors, you should be designing your own inductors, and modeling them using some EM tool such as ADS momentum. This will also allow you to model other critical traces surrounding the LNA etc...

As for your choice of pi network, when they say it has high Q it means that the bandwidth is narrow. It will be lossier than a simple L-match. Also, you already mentioned that the LNA tuning was off over corners, so why don't you consider a broader bandwidth matching such as a transformer.

You should also consider than the center frequency of your matching network may not be the same as the center frequency of your LNA since the input impedance is capacitive.


regards,
Aaron