AnsweredAssumed Answered

mixer 2nd order IMD

Question asked by yanyujin on Mar 11, 2009
Hi, All,

I'm currently simulating a mixer's OIP2 performance.  

In the "Mix_Diff_TOI" example as in the design guide, the 2nd-order IMDs are defined by the mixing index of {1, -1, 1} or {1, 1, -1} when LOfreq is greater than RFfreq. However, to my knowledge, the most frequently referred 2nd-order IMD in the literature is, e.g., RFfreq[1]-RFfreq[2], without LOfreq involved. In other words, I would expect {0, -1, 1} or {0, 1, -1} for the OIP2 simulation.

Is there any good reason for using {1, -1, 1} or {1, 1, -1} as in the design guide? Or somehow they are equivalent?

Best Regards,