CAPACITANCE COMPUTATION IN SYMMETRICAL MULTICONDUCTOR SYSTEMS

A systematic procedure is presented for efficient computation of the c apacitance matrix of complex 3D multiconductor systems exhibiting symm etry properties with respect to p (1, 2 or 3) orthogonal planes. The p rocedure is based on the decomposition of the whole system into a set of elementary symmetric subsystems, in such a way that the capacitance matrix is obtained by computing each auto or mutual submatrix indepen dently. The procedure is intended to drive an underlying numerical cod e (FEM or BEM) able to perform the electrical field analyses required. Explicit formulas for the boundary conditions or Green's functions, a s well as for the capacitances, are given in terms of the symmetry pro perties of the system. A concrete case of application is also shown.