Differential via pair impedance adjustment tool

Details Differential via pair impedance adjustment tool Differential via pair impedance adjustment tool

2006-01-03

2006-01-03

Whitmore, Stacy A. (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000

Reexamination Certificate

active

06983434

ABSTRACT:
A computer-implemented method is disclosed for adjusting impedance of a differential via pair in an electrical circuit layout. A differential via pair having an odd mode characteristic impedance needing adjustment is identified in a circuit design database. A region is established around the differential via pair in which circuit elements may be modified to adjust the odd mode characteristic impedance of the differential via pair. At least one of the circuit elements in the electrical circuit layout in the established region is adjusted until the odd mode characteristic impedance is closer to a desired odd mode characteristic impedance value.

REFERENCES:
patent: 6260181 (2001-07-01), Inoue
patent: 6381730 (2002-04-01), Chang et al.
patent: 6530062 (2003-03-01), Liaw et al.
patent: 6769102 (2004-07-01), Frank et al.
patent: 6807650 (2004-10-01), Lamb et al.

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