skrf.network.Network.passivity¶
- property Network.passivity: ndarray¶
passivity metric for a multi-port network.
This returns a matrix who’s diagonals are equal to the total power received at all ports, normalized to the power at a single excitement port.
mathematically, this is a test for unitary-ness of the s-parameter matrix 1.
for two port this is
\[( |S_{11}|^2 + |S_{21}|^2 \, , \, |S_{22}|^2+|S_{12}|^2)\]in general it is
\[S^H \cdot S\]where \(H\) is conjugate transpose of S, and \(\cdot\) is dot product.
- Returns
passivity
- Return type
numpy.ndarray
of shape fxnxn
References