Bus impedance matr
Impedance parameters or Z-parameters (the elements of an impedance matrix or Z-matrix) are properties used in electrical engineering, electronic engineering, and communication systems engineering to describe the electrical behavior of linear electrical networks. They are also used to describe the small-signal (linearized) response of non-linear networks. They are members of a family of similar parameters used in electronic engineering, other examples being: S-parameters, Y-parameters, H-parameters, T-parameters or ABCD-parameters.
Z-parameters are also known as open-circuit impedance parameters as they are calculated under open circuit conditions. ie., Ix=0, where x=1,2 refer to input and output currents flowing through the ports (of a two-port network in this case) respectively.