Parameter extraction for circuit models of electronic packages without optimization

In this paper, we derive circuit models for electronic packages starting from Z- or Y-matrix descriptions. If we propose a T- or a /spl Pi/-circuit, a direct relation is found between the admittance and impedance values and the circuit parameters. No optimization is needed. The T- and /spl Pi/-circuit models are valid for a general class of interconnections and packages. We illustrate the method on an example of a TAB interconnection structure.