i need help with osc!!!!!!!!!

I am having problem with the impedances parasites in my oscillator when I connect with the mixer. Summarizing the oscillator doesn't work and the program that I am using is ADS

With a problem description like this you can't expect too much valuable input here. Please be more specific what diagnose you made and what made you draw these conclusions?

u need to add buffer between VCO an the mixer
so the Mixer doesn't load the VCO
khouly

the problem is not the buffer, but the visualization of the oscillator in the harmonic balances and in the envelope

Zap and upload your ADS project file here so we can take a look.

excuse for the mistake I forgot to select an option in ADS