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Are you trying to stabilise your transistor under DC conditions?? if thats the case then you need to introduce the real loss to the transistor rather than frequency dependant network.
Real loss means resistive loss that are not frequency dependent as long as you can compensate for the parasitics of the resistor, there is plenty of material available on this subject. try reading about stabilizing RF FETs by using resistive networks etc.
where is your transistor is not stable ?
if it "in band" you must put resistor (try first at the output network)
if it out of band , at higher freq put plr, and if it is at lower freq put prc
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