Printed circuit board and layout method thereof
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United States of America Patent
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Dec 17, 2013
Grant Date -
Apr 25, 2013
app pub date -
Dec 14, 2012
filing date -
Dec 1, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A printed circuit board includes a signal layer having a pair of differential transmission lines thereon. An eye width and an eye height of an eye diagram obtained at output terminals of the pair of differential transmission lines are variable according to a distance between the pair of differential transmission lines. The eye width and the eye height of the eye diagram are at minimum values when the distance between the pair of differential transmission lines is at a first distance. The eye width and the eye height meet requirements of the pair of differential transmission lines for the eye diagram when the distance between the pair of differential transmission lines is set at a second distance, the second distance is less than the first distance.
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