Technical Notes > S-Parameters > Alternative Matrix Characterizations           

Calculating the Z-Matrix

The impedance matrix, Z, is calculated from the S-matrix as follows:

(1)

where

• S is the n x n generalized S-matrix.

• I is an n x n identity matrix.

• Z₀ is a diagonal matrix having the characteristic impedance (Z₀ ) of each port as a diagonal value.

Under the Matrix Data tab of the Display Items Dialog, the Z-matrix can be displayed as magnitude/ phase, real/ imaginary, magnitude, phase, real, or imaginary.