phase on smithchart

[233114]

Hello im mesuring a filter from 8-11Ghz and (with 100mhz step) and im plotting the result on a normalized smith chart how can i calculate phase on degrees (-180 +180) ?

I try to arctan(im/real) and then convert rad to degrees but the result are not normal

[ianidas300]

If you are able to get the real and imaginary values of your smith chart points then you can utilize complex math functions within LabVIEW. Specifically, Re/Im to Polar function which takes the real and imaginary components and has the magnitude and phase as outputs. Mathematics->numeric->compex->Re/Im to Polar