Signal via impedance verification tool

Details Signal via impedance verification tool Signal via impedance verification tool

2005-12-13

2005-12-13

Thompson, A. M. (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000

Reexamination Certificate

active

06976233

ABSTRACT:
A computer-implemented method is disclosed for verifying signal via impedance. Properties of a signal via and of any other vias within a given distance of the signal via are read from a circuit design database. A target characteristic impedance value for the signal via is obtained. A characteristic impedance of the signal via is calculated based on the other vias. The signal via is flagged as having an incorrect characteristic impedance if the calculated characteristic impedance does not match the target characteristic impedance value.

REFERENCES:
patent: 6038383 (2000-03-01), Young et al.
patent: 6381730 (2002-04-01), Chang et al.
patent: 6530062 (2003-03-01), Liaw et al.
patent: 6725430 (2004-04-01), Draxler et al.
patent: 6859915 (2005-02-01), Frank et al.
EDN Magazine, TDA Systems Application Note: Signal Integrity Modeling of Gigabit Backplanes, Cables and Connecotrs Using TDR, pp. 1-8, Jun. 2002.

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