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1. 发明授权

US4970625A Integrated module handle and chassis bulkhead for reducing electromagnetic interference emissions from circuit modules 失效
标题翻译：集成模块手柄和底盘隔板，用于减少电路模块的电磁干扰发射
公开(公告)号：US4970625A
公开(公告)日：1990-11-13
申请号：US344457
申请日：1989-04-28
申请人： Daniel L. Belanger , Ralph S. Dormitzer , David C. Moore , Donald G. Vonada , James M. Walls
发明人： Daniel L. Belanger , Ralph S. Dormitzer , David C. Moore , Donald G. Vonada , James M. Walls
IPC分类号： H05K7/14 , H05K9/00
CPC分类号： H05K9/0062 , H05K7/1414
摘要： A chassis and circuit modules for controlling electromagnetic interference in high-speed digital transceiver circuits. The impedance between a reference ground point and the transceiver circuits and a chassis wall through which the transceiver circuit signals pass is kept very low by intimate physical contact between a conductive bulkhead section of the module and the ground plane used by the transceiver. In particular, there is disclosed an arrangement whereby a plurality of modules are placed adjacent one another in a cabinet. Each of the modules contains a conductive bulkhead section or handle, which engages other adjacent bulkhead sections, and which may have an input/output connector mounted thereon. Each module also has a printed circuit board mounted to the bulkhead section so that a forward-circuit reference path reserved for use by transceiver circuits is positioned adjacent the connector and electrically connected to both the connector and the front section via a low impedance path. No partitions between the bulkhead sections are necessary since conductive springs formed on the lateral edges of the bulkheads provide electrical continuity between them.
摘要翻译：用于控制高速数字收发器电路中的电磁干扰的机箱和电路模块。通过模块的导电隔板部分和收发器使用的接地平面之间的紧密物理接触，收发器电路信号通过的基准接地点与收发器电路和机箱壁之间的阻抗将保持非常低。具体地，公开了一种在机柜中彼此相邻放置多个模块的布置。每个模块包括导电隔板部分或手柄，其接合其他相邻的隔板部分，并且可以具有安装在其上的输入/输出连接器。每个模块还具有安装到隔板部分的印刷电路板，使得保留供收发器电路使用的正向基准路径被定位在连接器附近并且经由低阻抗路径电连接到连接器和前部。在隔板部分之间没有隔板是必要的，因为形成在隔板的侧边缘上的导电弹簧在它们之间提供电连续性。

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