skrf.circuit.Circuit.z_active¶
- Circuit.z_active(a)[source]¶
Return the “active” Z-parameters of the circuit’s network for a defined wave excitation a.
The “active” Z-parameters are defined by:
\[\mathrm{active}(z)_{m} = z_{0,m} \frac{1 + \mathrm{active}(s)_m}{1 - \mathrm{active}(s)_m}\]where \(z_{0,m}\) is the characteristic impedance and \(\mathrm{active}(s)_m\) the active S-parameter of port \(m\).
- Parameters:
a (complex array of shape (n_ports)) – forward wave complex amplitude
- Returns:
z_act – active Z-parameters for the excitation a
- Return type:
complex array of shape (nfreqs, nports)
See also
s_active
active S-parameters
y_active
active Y-parameters
vswr_active
active VSWR