RLGC Parameter Matrices

This section includes information on the following matrices:

• Capacitance Matrices
• Conductance Matrices
• Resistance Matrices
• Inductance Matrices

To compute the entries of a matrix, Q3D solvers individually excite each conductor net or source terminal you have defined. Conducting objects, whether part of a net or not, influence the matrix calculations. Non-net conductive objects are grounded.

Since a model may contain many nets, the electromagnetic interaction between nets is described by a matrix, calculated as follows:

• As each source is excited, the field solution is used to compute a capacitance, inductance, or resistance for that conductor relative to the reference ground and to the other conductors. Each excitation yields one column of the matrix.
• The resistance and inductance matrices have one row for each source terminal. However, the capacitance and conductance matrices contain one row for each net.