TECHNIQUE FOR COMPUTING NON-LINEAR DRIVER MODELS FROM PRE-EXISTING INPUT-OUTPUT SIGNAL PAIR MEASUREMENTS USING FINITE ELEMENTS METHOD WITH APPLICATIONS IN COMPUTER AIDED ELECTRICAL CIRCUIT DESIGN
Original Publication Date: 2002-Jul-16
Included in the Prior Art Database: 2002-Jul-16
We are proposing a robust technique for computing non-linear driving port models that reproduce very accurately the behavior of logic electrical circuits for a specific signal propagation path between an input and an output port. The non-linear driver model is a simple pair of non-linear current or voltage sources controlled simultaneously by the input and output port signals (current and/or voltage). For a set of known input-output signal pairs, the state equations of the model are algebraically converted using the finite elements method into a system of linear equations whose solution is the parameter set for the non-linear driver sources. Our modeling technique allows the user to control the accuracy and the stability of the models, generates re-usable models, and is entirely based on pre-existing signal measurements. The models can be used primarily in automated circuit simulation and optimization, static timing analysis, and functional and delay noise analysis.