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    • 10. 发明授权
    • Connector between a daughterboard and a motherboard for high-speed
single-ended electrical signals
    • 子板和主板之间的连接器用于高速单端电信号
    • US5823795A
    • 1998-10-20
    • US741088
    • 1996-10-30
    • Richard A. Schumacher
    • Richard A. Schumacher
    • H01R13/648H01R12/70H01R13/6474H01R13/658H01R24/00H01R31/06H01R9/09
    • H01R12/7082H01R13/6474H01R31/065
    • An assembly of two printed circuit boards (PCBs) mounted either perpendicular to or parallel to each other within a housing, each PCB bearing one or more low-profile high-density board-to-board commodity connectors providing equal numbers of electrical contacts. These commodity connectors mate to connectors permanently mounted on the daughterboard and backplane/sideplane. The assembly housing provides for semi-permanent attachment of the assembly to either the daughterboard or to the backplane/sideplane, as desired for a particular application. The housing may be made of conductive material in contact with earth ground to provide electromagnetic interference (EMI) shielding. Electrical continuity between the PCBs within the assembly is provided by signal conductors of specified electrical impedance and propagation delay. Each end of each signal conductor serves a pair of adjacent contacts in the connectors of both PCBs, such that each signal contact is adjacent to the shield contact of the same conductor, and adjacent only to the shield contacts served by other conductors, and not adjacent to the signal contacts served by other conductors. Multiple connector contacts may be provided for each conductor's shield, to further reduce shield (return path) inductance.
    • 两个印刷电路板(PCB)的组件,其安装在壳体内彼此垂直或平行的位置,每个印刷电路板承载一个或多个薄型高密度板对板商品连接器,提供相等数量的电触头。 这些商品连接器与永久安装在子板和背板/侧板上的连接器配合。 组件壳体可根据特定应用的要求将组件半固定地附接到子板或者底板/侧板上。 壳体可以由与地面接触的导电材料制成,以提供电磁干扰(EMI)屏蔽。 组件内PCB之间的电气连续性由具有特定电阻抗和传播延迟的信号导体提供。 每个信号导体的每个端部在两个PCB的连接器中的一对相邻触点之间,使得每个信号触点与相同导体的屏蔽触点相邻,并且仅与由其它导体所服务的屏蔽触点相邻,并且不相邻 到由其他导体提供的信号触点。 可以为每个导体的屏蔽层提供多个连接器触点,以进一步减少屏蔽(返回路径)电感。