Characteristic impedance[s] of the network ports.
This property stores the characteristic impedance of each port of the network. Because it is possible that each port has a different characteristic impedance each varying with frequency, z0 is stored internally as a fxn array.
However because z0 is frequently simple (like 50ohm), it can be set with just number as well.
Returns: z0 – characteristic impedance for network Return type:
numpy.ndarrayof shape fxn