| US 7,487,078 B1 | ||
| Method and system for modeling distributed time invariant systems | ||
| Joel R. Phillips, Sunnyvale, Calif. (US); and Luca Daniel, Cambridge, Mass. (US) | ||
| Assigned to Cadence Design Systems, Inc., San Jose, Calif. (US) | ||
| Filed on Dec. 20, 2002, as Appl. No. 10/326,679. | ||
| Int. Cl. G06F 17/50 (2006.01); G06G 7/62 (2006.01) | ||
| U.S. Cl. 703—19 [703/13; 703/14] | 38 Claims |
| 1. A method of order reduction system for describing an electronic component in circuit simulation or analysis tools, the
method comprising:
determining a set of points from a representation of a distributed time invariant system of a component used in the design
of an Integrated Circuit (IC);
computing a basis for a projection operation of the set of points;
projecting system matrices to obtain smaller matrices;
performing a global interpolation of the smaller matrices;
verifying a passivity and accuracy of the interpolants of the smaller matrices and if the interpolants of the smaller matrices
are not passive and accurate, increasing an order of the global interpolant;
reformatting the interpolant projected system matrices as a state-space system;
utilizing the state-space system as a simplified model of the component in a simulation of the component in order to reduce
an amount of processing required to perform the simulation; and
storing the state-space system in a computer-readable medium.
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