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IIP3 simulations: qpss/hb vs hb

Hi,


What is the difference between obtaining IIP3 of a mixer with qpss+hb engine hb itself?

I am getting signficantly different results and I thought at lea "hb" should be consistent.

See example PDF attached which compares qpss(shooting_+qpac, qpss(hb)+qpac, hb+hbac.

There are many other ways for IIP3 calculations (e.g. rapid IIP3, 3-tone with hb up to running a transient, obtaining HD3 from DFT and converting to IIP3).

What is the most reliable/consistent method for switching transistors in a modern 28nm process? (e.g. N-path filters, passive mixers, ...)

Thank you!(Please visit the site to view this file)

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