Fast calculation of PEEC macromodels using frequency derivatives

The accurate computation of partial elements plays a key role in ensuring the accuracy and the stability of the Partial Element Equivalent Circuit (PEEC) method. Inaccuracies in partial elements computation, even at very high frequencies, may generate late time instabilities. On the other side, accurate computation of partial elements becomes prohibitively cumbersome when performed at high frequencies. In this paper a macro- modeling technique is applied, which is based on the use of frequency derivatives to allow a broadband characterization of electric and magnetic field couplings at a reduced computational cost.