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[ADS] How in the world do you simulate IM2, IM3, IIP2, IIP3, etc.?

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gotenks326

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I'm have a really hard time figuring out how to use ADS to simulate a 2-tone response to find out an amplifier's IM2, IM3, IIP2, and IIP3. I can't find any good resources on the internet to explain how to do this (and any ADS guides I've found are too vague/generalized and don't go into detail for this).

So, I have an amplifier and added a V_nTone block at the input. I added the Harmonic Balance simulation block and specified the fundamental frequency and the desired order. When I try to simulate, I get an error saying that the maximum allowed frequency difference is 1 kHz (my 2 tones are each 1 MHz away from the fundamental), so ADS doesn't so the HB simulation. How do I correct this?

Also, once I get past the above error, how would I plot the IM terms? Is there a certain function to do this?

Thanks in advance.
 

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