Home › Forums › Bug Reports › Possibilly, a bug in the log10(x) function › Reply To: Possibilly, a bug in the log10(x) function 22. May 2022 at 19:39 #2999 QucsStudioKeymaster Because s-parameters are complex-valued, log10(…) gives a complex number, too. In rectangular diagrams, the magnitude is shown, which is always positive. 20*log10(abs(S[3,3])) is what you want.
