skrf.media.freespace.Freespace.ep
- property Freespace.ep: Number | Sequence[Number] | ndarray
Complex dielectric permittivity.
If \(\tan\delta_e\) is not defined:
\[\varepsilon = \varepsilon_0 \varepsilon_r\]otherwise,
\[\varepsilon = \varepsilon_0 \Re[\varepsilon_r] (1 - j\tan\delta_e)\]where \(\tan\delta_e\) is the electric loss tangent.
- Returns:
ep – Complex dielectric permittivity in F/m.
- Return type:
number or array-like