phase of the s-matrix in pico-second (ps)

[MrLapDong]

Hello,

        I found the property s_deg to generate plot for phase of matrix in degrees, I would like to generate plot for phase of the s-matrix in ps. Do you all know how to do that? 

Regards,

Dong

[vinc0110]

Hi,

with "phase in ps" you probably mean the phase delay? https://www.microwaves101.com/encyclopedias/phase-delay

I don't think there is a plotting function for the phase delay, but you can always calculate it yourself and then plot manually:

import skrf

import numpy as np

import matplotlib.pyplot as mplt

nw = skrf.Network('mydata.s2p')

s21 = nw.s[:, 1, 0]

f = nw.f

delay = -1 / (2 * np.pi * f) * np.unwrap(np.angle(s21))

mplt.figure()

mplt.plot(f, delay)

mplt.show()

[jeanbiego]

Hello.
If what you are looking for is group delay, the following tutorial may be helpful.

Group Delay

2022年6月23日木曜日 14:42:47 UTC+9 vinc0110:

[MrLapDong]

Hi,

          I would like to generate plot for phase delay error:

nw = skrf.Network('mydata.s4p')

phase_delay = abs(abs(nw[:,1,3].s_deg) - abs(nw[:, 2, 4].s_deg))

          Now, this is in degrees and I would like to convert it into ps.

Regards,

Dong

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