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公开(公告)号:US06316944B1
公开(公告)日:2001-11-13
申请号:US09562596
申请日:2000-04-29
IPC分类号: G01R2728
CPC分类号: H05K1/0248 , G06F17/5022 , G06F17/5077 , H05K3/0005 , H05K2201/09263
摘要: The invention accurately determines propagation delay for a sawtooth pattern. Through measurement, the actual delays added per bend in the sawtooth pattern are determined and the values are then used in a CAD tool. The invention can add a known amount of propagation delay to a wire length by routing net wires close together without using a large amount of board space.
摘要翻译: 本发明精确地确定锯齿图案的传播延迟。 通过测量,确定锯齿形图案中每弯曲加上的实际延迟,然后在CAD工具中使用该值。 本发明可以通过将网线靠近在一起而不使用大量的电路板空间来将已知量的传播延迟增加到电线长度。
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公开(公告)号:US07307220B2
公开(公告)日:2007-12-11
申请号:US11034072
申请日:2005-01-12
IPC分类号: H05K1/03
CPC分类号: H05K1/117 , H05K1/0237 , H05K1/0243 , H05K1/0268 , H05K3/3405 , H05K2201/093 , H05K2201/0969 , H05K2201/09809 , H05K2201/10356
摘要: Various embodiments of an apparatus, circuit board, and method are disclosed for cable termination. In one embodiment, a surface pad is disposed on a surface of the circuit board. A ground conductor is in the circuit board, the ground conductor being parallel to and collateral to the at least one surface pad. Also, at least one antipad is positioned between the at least one surface pad and the ground conductor, wherein a nonconductive volume extends from the surface pad to the ground conductor through the at least one antipad.
摘要翻译: 公开了用于电缆端接的装置,电路板和方法的各种实施例。 在一个实施例中,表面焊盘设置在电路板的表面上。 接地导体位于电路板中,接地导体与至少一个表面焊盘平行并与其抵接。 此外,至少一个止痒板位于至少一个表面垫和接地导体之间,其中非导电体通过至少一个止推片从表面垫延伸到接地导体。
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