Invention Grant
US08237058B2 Printed circuit board with low propagation skew between signal traces
有权
印刷电路板,信号走线之间的传播偏差低
- Patent Title: Printed circuit board with low propagation skew between signal traces
- Patent Title (中): 印刷电路板,信号走线之间的传播偏差低
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Application No.: US12775349Application Date: 2010-05-06
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Publication No.: US08237058B2Publication Date: 2012-08-07
- Inventor: Michael C. Freda , Ricki D. Williams
- Applicant: Michael C. Freda , Ricki D. Williams
- Applicant Address: US CA Redwood Shores
- Assignee: Oracle America, Inc.
- Current Assignee: Oracle America, Inc.
- Current Assignee Address: US CA Redwood Shores
- Agency: Park, Vaughan, Fleming & Dowler LLP
- Main IPC: H05K1/00
- IPC: H05K1/00

Abstract:
A printed circuit board (PCB) is configured to minimize skew between two parallel signal trace portions. The PCB comprises a laminate layer, which includes a fiberglass weave and includes a plastic resin deposited on each face of the fiberglass weave to form a first face and second face of the laminate layer. The fiberglass weave comprises a first set of fiberglass bundles in a first orientation interwoven with a second set of fiberglass bundles in a second orientation. Moreover, the PCB comprises trace a layer that is coupled to the first face of the laminate layer, and includes two or more signal traces. Two parallel trace portions of the two or more signal traces are configured to have a matching orientation and separation distance to a neighboring fiberglass bundle of the fiberglass weave, thereby ensuring that the two parallel trace portions encounter matching dielectric constants from the laminate layer.
Public/Granted literature
- US20110272186A1 PRINTED CIRCUIT BOARD WITH LOW PROPAGATION SKEW BETWEEN SIGNAL TRACES Public/Granted day:2011-11-10
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