Edge fingers of multi-layer printed circuit board
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United States of America Patent
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Oct 10, 2017
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N/A
app pub date -
Nov 5, 2015
filing date -
Nov 5, 2015
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Abstract
A multi-layer printed circuit board includes an insertion end, two edge fingers provided on the insertion end, two chamfers formed at two opposite inner corners at two trailing edges of the two edge fingers, and two single-ended transmission lines extending from the two trailing edges of the two edge fingers and converging towards each other to form a differential pair. A first ground reference plane is disposed underneath the two single-ended transmission lines and the differential pair with a leading edge terminates at the trailing edges of the two edge fingers and a first cut-out portion formed at the leading edge. Other ground reference planes are disposed underneath the first ground reference plane with leading edges terminate at the trailing edges of the edge fingers and second cut-out portions are formed at the leading edges, wherein the second cut-out portions are larger than the first cut-out portion.
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