Hi Eric, I'm really sorry I don't have time to delve into this. (I have my day job that is extremely busy right now). I suggest that you file a Case with Customer Support (https://support.cadence.com ). That way, an AE can look at this right away for you. I've not done a "4 tone IP3" measurement. Since this is a receiver and not a transmitter, I'd be inclined to look at hbac/rapidIP3, rather than a 3 (or 4) large tone hb. Things that will help the AE are: software version you are using (spectre and virtuoso), the 4 frequencies in the circuit, that this is a receiver. Also if you have a technical paper describing the 4 tone measurement, that would be extremely helpful. I admit - I could be suffering from a "severe lack of caffeine" and simply missing the obvious here. best regards, Tawna
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