Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Reexamination Certificate
2006-04-11
2006-04-11
Nguyen, Chau N. (Department: 2831)
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
C174S1170FF
Reexamination Certificate
active
07026545
ABSTRACT:
A device and method are provided for reducing impedance, impedance discontinuities, and signal-loop area in flex cables used for a signal path. In one embodiment of the invention, a flex cable is provided for reducing the impedance and length of a return-signal path. The flex cable includes a signal conductor, and a return-signal conductor not connected to ground. The flex cable may also include a ground conductor. Such a flex cable provides a shorter- and lower-impedance return-signal path between a signal source and receiver than do conventional flex cables. In another embodiment of the invention, a method is provided that includes the steps of delivering a signal from a signal source to a signal receiver with a flexible conductor, and returning the signal from the signal receiver to the signal source with another flexible conductor other than ground.
REFERENCES:
patent: 5003273 (1991-03-01), Oppenberg
patent: 5027074 (1991-06-01), Haferstat
patent: 5120905 (1992-06-01), Cousin et al.
patent: 6495763 (2002-12-01), Eichmann et al.
patent: 6521843 (2003-02-01), Kohya
Barr Andrew Harvey
Dobbs Robert William
Wilson Jeremy Ian
Hewlett--Packard Development Company, L.P.
Nguyen Chau N.
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