PRINTED CIRCUIT BOARD AND OPTICAL TRANSMISSION DEVICE
    1.
    发明申请
    PRINTED CIRCUIT BOARD AND OPTICAL TRANSMISSION DEVICE 有权
    印刷电路板和光传输装置

    公开(公告)号:US20100124423A1

    公开(公告)日:2010-05-20

    申请号:US12618861

    申请日:2009-11-16

    IPC分类号: H04B10/04 H01P1/20

    摘要: To reduce emission of an unintentional electromagnetic wave even if a frequency of a clock signal being output is high, a printed circuit board (10) includes: a substrate (101); signal output circuits (102 and 103) formed on the substrate (101), for outputting a clock signal; power supply wirings (109 and 110) for connecting the signal output circuits (102 and 103) and a power source; and trap filters (107 and 108) provided to the power supply wirings (109 and 110), for attenuating a frequency component corresponding to a frequency of the clock signal.

    摘要翻译: 为了减少输出时钟信号的频率高的无意的电磁波的发射,印刷电路板(10)包括:基板(101); 形成在基板(101)上的信号输出电路(102和103),用于输出时钟信号; 用于连接信号输出电路(102和103)和电源的电源布线(109和110); 以及提供给电源配线(109和110)的陷波滤波器(107和108),用于衰减对应于时钟信号频率的频率分量。

    Printed Circuit Board and Optical Transmission Device
    2.
    发明申请
    Printed Circuit Board and Optical Transmission Device 有权
    印刷电路板和光传输设备

    公开(公告)号:US20130163996A1

    公开(公告)日:2013-06-27

    申请号:US13771768

    申请日:2013-02-20

    IPC分类号: H04B10/50 H04B3/02

    摘要: A printed circuit board includes a substrate, a signal output circuit formed on the substrate for outputting a clock signal, a shield for covering the signal output circuit, a power supply wiring for connecting the signal output circuit and a power source, and a trap filter provided to the power supply wiring and provided inside the shield, for attenuating a frequency component corresponding to a frequency of clock signal. The trap filter includes a resonance circuit having one portion of the power supply wiring, an inner-layer wiring of the substrate located below the one portion of the power supply wiring, an inner-layer ground wiring of the substrate located below the inner-layer wiring, and a via hole for connecting the one portion of the power supply wiring and the inner-layer wiring.

    摘要翻译: 印刷电路板包括基板,形成在基板上的用于输出时钟信号的信号输出电路,用于覆盖信号输出电路的屏蔽,用于连接信号输出电路和电源的电源布线,以及陷波滤波器 提供给电源线并设置在屏蔽内部,用于衰减对应于时钟信号频率的频率分量。 陷波滤波器包括谐振电路,其具有电源布线的一部分,位于电源布线的一部分下方的基板的内层布线,位于内层下方的基板的内层布线 布线和用于连接电源布线和内层布线的一部分的通孔。

    Printed circuit board and optical transmission device
    3.
    发明授权
    Printed circuit board and optical transmission device 有权
    印刷电路板和光传输装置

    公开(公告)号:US08385748B2

    公开(公告)日:2013-02-26

    申请号:US12618861

    申请日:2009-11-16

    IPC分类号: H04B10/00

    摘要: To reduce emission of an unintentional electromagnetic wave even if a frequency of a clock signal being output is high, a printed circuit board (10) includes: a substrate (101); signal output circuits (102 and 103) formed on the substrate (101), for outputting a clock signal; power supply wirings (109 and 110) for connecting the signal output circuits (102 and 103) and a power source; and trap filters (107 and 108) provided to the power supply wirings (109 and 110), for attenuating a frequency component corresponding to a frequency of the clock signal.

    摘要翻译: 为了减少输出时钟信号的频率高的无意的电磁波的发射,印刷电路板(10)包括:基板(101); 形成在基板(101)上的信号输出电路(102和103),用于输出时钟信号; 用于连接信号输出电路(102和103)和电源的电源布线(109和110); 以及提供给电源配线(109和110)的陷波滤波器(107和108),用于衰减对应于时钟信号频率的频率分量。

    Printed circuit board and optical transmission device
    4.
    发明授权
    Printed circuit board and optical transmission device 有权
    印刷电路板和光传输装置

    公开(公告)号:US08660434B2

    公开(公告)日:2014-02-25

    申请号:US13771768

    申请日:2013-02-20

    IPC分类号: H04B10/00

    摘要: A printed circuit board includes a substrate, a signal output circuit formed on the substrate for outputting a clock signal, a shield for covering the signal output circuit, a power supply wiring for connecting the signal output circuit and a power source, and a trap filter provided to the power supply wiring and provided inside the shield, for attenuating a frequency component corresponding to a frequency of clock signal. The trap filter includes a resonance circuit having one portion of the power supply wiring, an inner-layer wiring of the substrate located below the one portion of the power supply wiring, an inner-layer ground wiring of the substrate located below the inner-layer wiring, and a via hole for connecting the one portion of the power supply wiring and the inner-layer wiring.

    摘要翻译: 印刷电路板包括基板,形成在基板上的用于输出时钟信号的信号输出电路,用于覆盖信号输出电路的屏蔽,用于连接信号输出电路和电源的电源布线,以及陷波滤波器 提供给电源线并设置在屏蔽内部,用于衰减对应于时钟信号频率的频率分量。 陷波滤波器包括谐振电路,其具有电源布线的一部分,位于电源布线的一部分下方的基板的内层布线,位于内层下方的基板的内层布线 布线和用于连接电源布线和内层布线的一部分的通孔。

    Structure of optical passive device and assembling method therefor
    5.
    发明授权
    Structure of optical passive device and assembling method therefor 失效
    光无源器件的结构及其组装方法

    公开(公告)号:US5867314A

    公开(公告)日:1999-02-02

    申请号:US699213

    申请日:1996-08-19

    摘要: A hollow magnetic member includes a plurality of separate magnetic pieces. A parting surface between such pieces is defined by a plane parallel to or defining an angle of not more than forty-five (45) degrees with a center axis of the magnetic member. A holder for supporting a polarizer has such a cross section defined by a part of a cylinder cut away along a plane parallel to or defining an angle of not more than forty-five (45) degrees with the center axis thereof. A notched portion is formed in a cutting surface for containing the polarizer. A jig for assembly includes a base for holding the holder and a plate for positioning optical elements such as the polarizer. The holder is disposed in a recess in the base with the notched portion directed upward. A bonding material is applied to the notched portion prior to installation of the polarizer. The plate is placed on the base by inserting pins through holes, and then a screw is engaged with a tapped hole. The polarizer is inserted through an opening in the plate and is received in the notched portion positioned just below the opening.

    摘要翻译: 中空磁性部件包括多个分离的磁性部件。 这些片之间的分离表面由与磁性构件的中心轴平行或限定不超过四十五(45)度的角度的平面限定。 用于支撑偏振器的保持器具有由沿与平行于或限定与其中心轴线不超过四十五(45)度的角度的平面切割的圆柱体的一部分限定的横截面。 在用于容纳偏振器的切割表面中形成切口部分。 用于组装的夹具包括用于保持保持器的基座和用于定位诸如偏振器的光学元件的板。 保持器设置在基部的凹部中,而凹口部分朝向上方。 在安装偏振器之前,将接合材料施加到切口部分。 通过将销插入孔中将板放置在基座上,然后将螺钉与螺纹孔接合。 偏振器通过板中的开口插入并被容纳在位于开口正下方的凹口部分中。