dB mag calculation of S parameters is incorrect about scikit-rf

[arsenovic]

josh,
im not sure i understand exactly what you are saying. the s-parameters are stored directly, and calculated dB values for this is straightforward.

translating the reflection coefficient to impedance values requires a port impedance(z0), as does interpreting the contours on the smith chart. the port impedance is adjustable.

perhaps you are trying to generate a network from impedances values?

[arsenovic]

@josh1111 is there a problem or can i close this?

[josh1111]

Hi Alex - Sorry for the late reply. I didn't see a notification on the first message you sent. I think the issue is that I assumed your S11 -> dB conversion was the dB mag of the return loss of S11. Not just the magnitude of the complex number S11.

[arsenovic]

ok, glad it makes sense now,

keep on truckin