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https://designers-guide.org/forum/YaBB.pl Design >> RF Design >> IIP3 test for mixer https://designers-guide.org/forum/YaBB.pl?num=1222678687 Message started by rf_jay on Sep 29th, 2008, 1:58am |
Title: IIP3 test for mixer Post by rf_jay on Sep 29th, 2008, 1:58am what do you mean by "extrapolation point" while doing IIP3 test for mixer. What should the value be for it?? how to decide/calcuate extrapolation point? thanks n regards, JT |
Title: Re: IIP3 test for mixer Post by didac on Sep 29th, 2008, 6:57am Hi, When you look at an IIP3 simulation/measurement you will see that for medium powers the traces follow a slope of 1 and 3, for higher levels of power the mixer will go to compression. So you must choose an input power level were the slope of 3rd order is still 3 and make a linear extrapolation of the intercept point. Hope it helps, |
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