skrf.media.freespace.Freespace.v_g¶
- property Freespace.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
References