Accuracy and stability improvements of integral equation models using the partial element equivalent circuit (PEEC) approach

The partial element equivalent circuit (PEEC) technique is a formulation wh ich transforms an electric field integral equation (EFIE) into a full-wave equivalent circuit solution. In this paper, improvements are made to the PE EC model through the development of a refined method of computing both the partial inductances as wed as the coefficients of potential. The method doe s not increase the number of unknowns. In addition, damping is added to the PEEC model in order to further reduce nonphysical resonances which may occ ur above the useful frequency range. The observations and solutions present ed in this paper are especially important for time domain solvers. The effe ctiveness of the method is illustrated with several examples.