1. A method for simulating a circuit element, comprising the steps of: in a computer, discretizing said circuit element into charge elements and current elements; calculating electromagnetic interaction using one or more multilayer Green's functions on said charge elements and said current elements; generating electromagnetic interaction results as a function of electromagnetic interaction and using a partial element equivalent circuit PEEC method; and simulating the circuit element by using the generated electromagnetic interaction results; wherein the discretizing step, the calculating step and the generating step provide a system matrix.