I get multiple results at the same frequency in a 3-tone simulation.
I try to determine the IP3 of a mixer. I have 3 large signal tones: 0.75 GHz, 1.25 GHz and 1.26 GHz.
At the IM3 frequency of 490 MHz I observe 4 results, see also the screenshot of the table output. The frequencies are exactly the same (even when I subtract 490 MHz by using xval() ).
Which of the values do I have to use to determine the correct IP3?
Is there an option to merge these results?
