ADS load impedance matching for oscillator?

Does anyone know how to set up a simulation in order to determine the load impedance that results in maximum power delivery for an oscillator? I have been trying to use LoadPull, but I am not sure if this is the right approach.

Alternatively, is there a way to simulate the S-parameters of an oscillator?

Thanks!

Load Pull can be used, no doubt.
If you consider the oscillator as an Power Amplifier, the principal is almost same,so max. power at the right impedance.
But..
Load Impedance is also quite deterministic on other specifications of the oscillator such as Phase Noise,Drift and Pulling effect.If you would obtain max. power from the oscillator, you may also loose some good stuffs ( maybe not ).