公开(公告)号：US06359214B1

公开(公告)日：2002-03-19

申请号：US09429201

申请日：1999-10-28

申请人： Richard N. Worley ,  Leroy Jones, Jr. ,  Steve L. Williams

发明人： Richard N. Worley ,  Leroy Jones, Jr. ,  Steve L. Williams

IPC分类号： H05K900

CPC分类号： H05K9/0015 ,  G06F1/182 ,  Y10S277/92

摘要： An EMI gasket (20) includes a plurality of serrations (34) along at least one edge (35, 36). The serrations (34) are arranged side-by-side so that each may be articulated individually. That is, one of the serrations (34) may be displaced significantly out of the plane of the gasket without affecting adjacent serrations. Thus, when the edge of the gasket (20) is compressed between two surfaces which include a discontinuity (40) such as a step or protuberance between them, the serration in contact with the discontinuity is displaced out of the plane of the gasket without displacing adjacent portions of the gasket. Allowing a portion of an EMI gasket (20) to be displaced out of the plane of the gasket without affecting adjacent portions of the gasket substantially reduces or eliminates gaps which occur due to the failure of the gasket to precisely follow the contour of a component.

摘要翻译： EMI垫片（20）包括沿着至少一个边缘（35,36）的多个锯齿（34）。 锯齿（34）并排布置，使得每个可以单独地铰接。 也就是说，锯齿（34）中的一个可以显着地偏离垫圈的平面而不影响相邻的锯齿。 因此，当垫圈（20）的边缘在两个表面之间被压缩时，这两个表面之间包括诸如它们之间的台阶或突起的不连续（40）时，与不连续接触的锯齿被移出垫圈的平面而不会移位 垫片的相邻部分。 允许EMI垫片（20）的一部分从垫圈的平面移出而不影响垫圈的相邻部分，基本上减少或消除了由于衬垫的故障而精确地跟随部件的轮廓而发生的间隙。

公开(公告)号：US06555743B1

公开(公告)日：2003-04-29

申请号：US09632478

申请日：2000-08-04

申请人： Richard N. Worley ,  Steve L. Williams ,  Leroy Jones, Jr.

发明人： Richard N. Worley ,  Steve L. Williams ,  Leroy Jones, Jr.

IPC分类号： H05K900

CPC分类号： H05K9/0049 ,  G06F1/182 ,  G06F1/184 ,  G06F1/187 ,  G11B33/1493

摘要： A computer system including a number of option bays that accommodate optional peripheral equipment, such as CD-ROM drives, DVD drives, magnetic tape backup systems and Zip drives. An unpopulated bay is segmented into compartments by a divider that extends through substantially the entire depth of the bay so that each of the compartments operates as a waveguide beyond frequency cutoff (WBFC). The resulting compartments are characterized by cross-sectional dimensions that are less than the cross-sectional dimensions of the bay, so that the compartmentalization effects substantially enhanced attenuation of electromagnetic signals having a frequency at the highest expected operating frequency of the computer system.

摘要翻译： 包括许多可选的托架的计算机系统，其容纳可选的外围设备，例如CD-ROM驱动器，DVD驱动器，磁带备份系统和Zip驱动器。 通过分隔器将未填充的隔间分隔成隔间，该分隔器延伸穿过隔间的整个深度，使得每个隔间作为超出频率截止（WBFC）的波导进行操作。 所得到的隔室的特征在于横截面尺寸小于隔间的横截面尺寸，使得隔室对基本上增加了具有在计算机系统的最高预期工作频率下的频率的电磁信号的衰减。

公开(公告)号：US06738919B2

公开(公告)日：2004-05-18

申请号：US09771094

申请日：2001-01-26

申请人： Steven L. Williams ,  Richard N. Worley ,  Satish N. Pratapneni ,  Leroy Jones, Jr.

发明人： Steven L. Williams ,  Richard N. Worley ,  Satish N. Pratapneni ,  Leroy Jones, Jr.

IPC分类号： G06F112

CPC分类号： H05K1/0248 ,  G06F1/10 ,  H05K1/0228 ,  H05K2201/09236 ,  H05K2201/09263 ,  H05K2201/10159

摘要： A technique for reducing electromagnetic interference (EMI) in electronic systems that provides a phase shift between signals having a common frequency component propagating on adjacent portions of circuit board signal traces. The phase shift is produced by a delay element in one of the adjacent signal traces. In one example, the delay element includes a serpentine delay located at the signal generating circuit side of the adjacent portion of the signal trace. Such a technique can be used to reduce EMI emissions from clock signals provided to RAM circuits of a system memory of a computer system.

摘要翻译： 一种用于减小电子系统中的电磁干扰（EMI）的技术，其在具有在电路板信号迹线的相邻部分上传播的公共频率分量的信号之间提供相移。 相移由相邻信号迹线之一中的延迟元件产生。 在一个示例中，延迟元件包括位于信号迹线的相邻部分的信号发生电路侧的蛇形延迟。 这样的技术可以用于减少提供给计算机系统的系统存储器的RAM电路的时钟信号的EMI发射。

公开(公告)号：US06252161B1

公开(公告)日：2001-06-26

申请号：US09444068

申请日：1999-11-22

申请人： Jeffrey C. Hailey ,  Richard N. Worley

发明人： Jeffrey C. Hailey ,  Richard N. Worley

IPC分类号： H05K900

CPC分类号： H05K9/0041

摘要： A data processing system including but not limited to an enclosure of the data processing system having a waveguide-below-cutoff EMI-attenuating air ventilation structure formed from a dielectric-conductor combination material, the enclosure of the data processing system containing at least one data processing system component selected from the group including but not limited to a processor, a memory, a bridge, a bus, a graphics processor, a network card, an isochronous device. A related method for manufacturing a waveguide-below-cutoff EMI-attenuating air ventilation structure including but not limited to forming at least one aperture structured to attenuate at least one specified electromagnetic energy waveform within a dielectric-conductor combination material.

摘要翻译： 一种数据处理系统，包括但不限于具有由介电导体组合材料形成的具有波导低于截止频率的EMI衰减空气通风结构的数据处理系统的外壳，数据处理系统的外壳包含至少一个数据 从包括但不限于处理器，存储器，桥接器，总线，图形处理器，网卡，等时器件的组中选择的处理系统组件。 一种用于制造低于截止频率的EMI衰减通气结构的相关方法，包括但不限于形成至少一个孔，其被构造为衰减介电导体组合材料内的至少一个特定的电磁能量波形。