公开(公告)号：WO2009023238A1

公开(公告)日：2009-02-19

申请号：PCT/US2008009713

申请日：2008-08-13

Applicant: FORCE10 NETWORKS INC

Inventor： GOERGEN JOEL R ,  HUNT GREG

IPC: H05K3/42 ,  H05K1/02

CPC classification number: H05K3/429 ,  H05K1/0216 ,  H05K1/0237 ,  H05K3/0047 ,  H05K2201/044 ,  H05K2201/09236 ,  H05K2201/09845 ,  H05K2203/0207 ,  H05K2203/0242 ,  H05K2203/175 ,  Y10T29/49165

Abstract: A high-speed router backplane is disclosed. The router backplane uses differential signal pairs on multiple signal layers, each sandwiched between a pair of digital ground layers. Thru- holes are used to connect the differential signal pairs to external components. To reduce routing complexity, at least some of the differential signal pairs route through a via pair, somewhere along their path, to a different signal layer. At least some of the thru-holes and vias are drilled to reduce an electrically conductive stub length portion of the hole. The drilled portion of a hole includes a transition from a first profile to a second profile to reduce radio frequency reflections from the end of the drilled hole.

Abstract translation: 公开了一种高速路由器背板。 路由器背板在多个信号层上使用差分信号对，每个信号对夹在一对数字接地层之间。 通孔用于将差分信号对连接到外部组件。 为了降低路由复杂度，差分信号对中的至少一些在其路径的某处沿着不同的信号层路由通路对。 钻出至少一些通孔和通孔以减少孔的导电短截线长度部分。 孔的钻孔部分包括从第一轮廓到第二轮廓的转变，以减少从钻孔的端部的射频反射。