skrf.media.circularWaveguide.CircularWaveguide.v_g

property CircularWaveguide.v_g

Complex group velocity (in m/s).

\[j \cdot d \omega / d \gamma\]

where:

  • \(\omega\) is angular frequency (rad/s),

  • \(\gamma\) is complex propagation constant (rad/m)

Notes

the j is used to make propagation real, this is needed because skrf defined the gamma as \(\gamma= \alpha +j\beta\).

Returns:

v_g

Return type:

numpy.ndarray

References

https://en.wikipedia.org/wiki/Group_velocity

See also

propagation_constant, v_p, gamma