Layout configuration of differential signal transmission...

Details Layout configuration of differential signal transmission... Layout configuration of differential signal transmission...

2006-06-05

2009-06-09

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Plural channel systems

With balanced circuits

C333S005000

Reexamination Certificate

active

07545233

ABSTRACT:
A layout configuration of a differential pair for a printed circuit board (PCB) having a signal plane is provided. In a preferred embodiment, the layout configuration comprises: a differential pair on the signal plane; a pair of vias abutting the differential pair, and the pair of vias being mutually dissymmetrical about the differential pair; and a distance between the pair of vias along the differential pair being equal to½TV, wherein T is a signal rise time, V is a speed of the signal. Therefore, the layout configuration can meet with the requirements of impedance matching, reduce reflection, and improve signal integrity.

REFERENCES:
patent: 6710255 (2004-03-01), Ross et al.
patent: 6791429 (2004-04-01), Mikalauskas
patent: 6812803 (2004-11-01), Goergen
patent: 7151420 (2006-12-01), Brunker et al.

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