Hello,
My question from https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/38589/image-rejection-of-iq-mixer is still up :( So far I found the following hack: PSS+PAC, relative harmonic=1 and frequency sweep -100M ... 100M (for example). Then:
leafValue(v("/vodi" ?result "pac") "harmonic" -1) + (sqrt(-1) * leafValue(v("/vodq" ?result "pac") "harmonic" -1))
Similarly as combining the I/Q data in time domain I add them in frequency domain (pac data) as complex value. The problem is that this maps both the positive and negative frequencies to the same (positive) frequency values.
Question 1: When I plot this (or export to CSV/Table) one x value (e.g. 10 MHz) has 2 y values (one for positive and one for the negative frequency). How do I obtain the individual values? If I use value it just gives me the mean!
Question 2: Is there any way to modify the x-value of the pac data to include negative frequencies?
Thanks!