A new fullwave global analysis of coinplex inhomogeneous structures including passive or active, linear or non linear lumped elements is presented.Only one electromagnetic simulation of tlie distributed part, by a 3D finite element method using edge elements, is needed corresponding to the insertion of several lumped elements placed at tlie same position. Results for a resistor, a diode inserted in a niicrostrip circuit as well as a G u m diode amplifier are presented and comparisons with measurements are given for an active structure.