Parameter extraction is one of the crucial points in the Integrated Circuit Design Process. This paper describes the features of CIRCE, a Parameter Extraction program, that produces an electrical description of the network having a geometrical description of the layout as input.Parasitic effects due to the intrinsic resistances of the circuit wires and to the capacitive interactions between the wires themselves (coupling and overlapping) are taken into account. Modelling of resistive and capacitive effects are presented and the implementation into the program CIRCE is described. Examples are shown in the last part.
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