Method for altering the delay properties of a transmission...

Details Method for altering the delay properties of a transmission... Method for altering the delay properties of a transmission...

2004-01-30

2008-07-29

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Plural channel systems

C333S004000, C333S246000

Reexamination Certificate

active

07405634

ABSTRACT:
An improved method and apparatus for altering the effective electrical length of trace on a circuit board. In the present invention small tabs of etch are routed perpendicular to the trace in the unused areas between adjacent traces. In an embodiment of the invention, a method of tuning the delay characteristics of a transmission line is implemented by inserting compensation tabs into the unused area between the segments of adjacent straight traces or a serpentine run. Utilizing the method and apparatus of the present invention, it is possible to achieve significantly greater electrical length for an electrical trace without introducing coupling problems or utilizing large amounts of space on a circuit board.

REFERENCES:
patent: 5278524 (1994-01-01), Mullen
patent: 5448208 (1995-09-01), Honjo
patent: 5777532 (1998-07-01), Lakin
patent: 6280555 (2001-08-01), Wilbur
patent: 6347041 (2002-02-01), Hailey et al.
patent: 6582581 (2003-06-01), Goldberg
patent: 6940362 (2005-09-01), Otaki et al.

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