Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design
Reexamination Certificate
2007-09-11
2007-09-11
Lin, Sun James (Department: 2825)
Computer-aided design and analysis of circuits and semiconductor
Nanotechnology related integrated circuit design
C716S030000, C716S030000
Reexamination Certificate
active
11163408
ABSTRACT:
The present invention is a substrate dependent circuit modeling system for substrate-mounted components. The height and dielectric constant of a substrate have a significant impact on the frequency response of such components, and these effects cannot be treated independently from the circuit model. The equivalent circuit parameters in the model must be made to vary in accordance with changes in the substrate. The invention includes the steps of selecting a substrate mounted electrical circuit component for which an equivalent circuit model is desired, determining equivalent circuit model input parameters, wherein some of which are dependent upon characteristics of the substrate upon which the component is mounted, for the selected component, representing the selected electrical circuit component mounted upon the substrate as an equivalent electrical circuit, formulating mathematical expressions based upon the input parameters, and creating a unique equivalent circuit model for the component mounted upon the given substrate, the unique equivalent circuit model representing the mounting of the component upon the given substrate wherein the equivalent circuit model provides behavior and performance predictions of the component based upon the given substrate characteristics.
REFERENCES:
patent: 6031986 (2000-02-01), Milsom
Lakshminarayanan et al., “A Substrate-Dependent CAD Model for Ceramic Multilayer Capacitors”, Oct. 2000, IEEE Transaction on Microwave Theory and Techniques, vol. 48, iss. 10, pp. 1687-1693.
Zhao et al., “S Parameter-Based Experimental Modeling of High Q MCM Inductor with Expontential Gradient Learning Algorithm”, Feb. 1997, IEEE Multi-Chip Module Conference, Paper Digest, pp. 108-113.
Lutz et al., “Modeling of Spiral Inductors on Lossy Substrates for RFIC Applications”, Jun. 1998, IEEE MTT-S International Microwave Symposium Digest, vol. 3, pp. 1855-1858.
Capwell John
Gordon Horace
Lakshminarayanan Balaji
Weller Thomas
Lin Sun James
Sauter Molly L.
Smith & Hopen , P.A.
University of South Florida
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