How to simulate a Power Amp for PIdb and gain compression in ADS?

i am desiging C -band Power Amp so How I can simulate Power Amp FET like FLM6472-12F for PIdb and gain compresion in ADS, how to get nonlinear model for these devices or is there any other method.

Thanks

It's a C-Band internally matched HEMT GaAs MesFET.Unfortunally it does not have a nonlinear model but s-parameters.in its datasheet some parameters are given but obviously they are not sufficient.

The only thing that you may do " implement that circuit on a board and play with components"...

u can c the p1db and psat gain at p1db (and small signal gain - g1db+1).
so u can use model of "AMP" put those info and good S11 and S22

great job ,if anyone can tell me how to match the gsm power amplifier

By "Load Pull" method. Never use conjugate matching for power amplifiers with high powers.

If you have a simulator and nonlinear model of the output stages' transistors, you can "predict" the optimum load impedance for that amplifier.

If you would use "ready to use" power amplifier for this purpose, the optimum load impedance is already mentioned in its datasheet.

in fact , EUDYNA'device is easy to use,only need to adjust the recomend circuit with a few capacitor, so not worry,just try!
i use the S parameters of the FLL120 AND FLL810IQ-3C to do a power amplifier, only simulate the GAIN and adjust a few capacitor and the result is very good!
just try and not worry!

for beginer TOSHIBA transistor are beter.
when u use fujithsu - u gona have esely osilation

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