When the impedance matrix, Z, or the admittance matrix,
Y, is available it is possible to calculate all other types of lumped parameter matrices from the relations below.
where L is the inductance,
C is the capacitance,
R is the resistance, and
G is the conductance.
S is the S-parameter. The relations also include the following matrices
where Z0 is the characteristic impedance.
where Q is charge,
V is voltage, and
C is the Maxwell capacitance matrix.
where CMij are elements of the Maxwell capacitance matrix and
Cmij are elements of the mutual capacitance matrix.
This conversion can also be used to transform resistance and conductance matrices obtained from the Electric Currents physics. In that context the output resistance matrix corresponds to the inverse Maxwell capacitance matrix, electrode currents correspond to charges and the mutual or SPICE conductance matrix corresponds to the mutual or SPICE capacitance matrix.
You can compute conversions between the various matrices (Z,
Y,
S,
CMax,
Cmut) in a results table using the
Settings window for the
Global Matrix Evaluation node, which you can add under
Results>Derived Values.