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iam sorry i didnt understand
, i would to design the power amplifier with transistor CREE CGH40006S if i want to matching impedance is always not matching ,does it affect the stabilizing circuit? because I just give arbitrary resistive value at the input?
Thanks for your explain, but iam sorry i didnt understand
is the addition of the resistive component the value free without calculation? and I have tried inserting a series resistive component but the MAG becomes small?I did not completely understand your question but I am going to go out on a limb and try to guess it.
So you had a transistor, and you found that your Rollett stability factor is less than 1. And you want to know what to do?
K>1 means unconditionally stable but K<1 does not automatically imply your amplifier is going to be unstable. It depends on your load and source impedance. If your load impedance is fixed, you can draw the load stability circle and see if your amplifier is going to be unstable for the load impedance that you are targeting. If no, then you should be fine.
But if yes, then the only thing you can do it place a series resistor with the gate of your device to reduce the gain and see at what point your load lies outside your load (in)stability circle.
is the addition of the resistive component the value free without calculation? and I have tried inserting a series resistive component but the MAG becomes small?
Its kind of hard to do hand calculation. I typically sweep the value of R until I get Kf>1 and I use that value.
But yes indeed, your maximum available gain (MAG) will come down.