Circuit board with trace configuration for high-speed...

Details Circuit board with trace configuration for high-speed... Circuit board with trace configuration for high-speed...

2005-07-05

2005-07-05

Flynn, Nathan J. (Department: 2826)

Active solid-state devices (e.g., transistors, solid-state diode

Combined with electrical contact or lead

Of specified material other than unalloyed aluminum

C257S758000, C361S792000, C174S255000

Reexamination Certificate

active

06914334

ABSTRACT:
Trace configurations for carrying high-speed digital differential signals provide for reduced conduction loss and improved signal integrity. In one embodiment, a circuit board has a first set of conductive traces disposed on non-conductive material, and a second set of conductive traces parallel to the first set and disposed within the conductive material. The second set is separated from the first set by non-conductive material. Corresponding traces of the first and second sets may be in a stacked configuration. In other embodiments, conductive material may be provided between corresponding traces of the first and second sets resulting in an “I-shaped” or “U-shaped” cross-section. In yet other embodiments, the trace configurations have “T-shaped” and “L-shaped” cross-sections.

REFERENCES:
patent: 4712161 (1987-12-01), Pryor et al.
patent: 5408053 (1995-04-01), Young
patent: 6292153 (2001-09-01), Aiello et al.

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