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    • 10. 发明授权
    • Printed-circuit assembly
    • 印刷电路组件
    • US06166457A
    • 2000-12-26
    • US68763
    • 1998-08-11
    • Daisuke IguchiOsamu Ueno
    • Daisuke IguchiOsamu Ueno
    • H05K1/02H05K1/16
    • H05K1/0231H05K1/023H05K2201/09309H05K2201/10022H05K2201/10446H05K2201/10522H05K2201/10636H05K2201/10689Y02P70/611
    • A printed wiring board device used for electronic equipment, such as the information equipment, etc. A printed wiring board (10) has a power source layer (11) and a ground layer (12) and is mounted with active elements (3 and 4), such as digital ICs, etc. A first capacitor (1) which conductively couples the layers (11 and 12) with each other at a high frequency is provided in the peripheral section of one end side or the other end side of the section of the board (10) where the layers (11 and 12) are faced to each other. Second capacitors (2) which respectively supply transient currents to the active elements (3 and 4) are provided between the power supply pins (3V and 4V) of the elements (3 and 4) and the ground layer (12) near the elements (3 and 4). Therefore, the electromagnetic radiation caused by the power source layer (11) and the ground layer (12) of the printed wiring board (10) can be suppressed easily and remarkably.
    • PCT No.PCT / JP97 / 03566 Sec。 371日期:1998年8月11日 102(e)1998年8月11日PCT 1997年10月6日PCT PCT。 第WO98 / 16092号公报 日期:1998年04月16日印刷电路板(10)具有电源层(11)和接地层(12),并且安装有活性物质 诸如数字IC等的元件(3和4)等。在一端侧或另一端的周边部分设置有以高频率将层(11和12)彼此导电耦合的第一电容器(1) 其中层(11和12)彼此面对的板(10)的截面的端侧。 分别向有源元件(3和4)提供瞬态电流的第二电容器(2)设置在元件(3和4)的电源引脚(3V和4V)与​​元件附近的接地层(12)之间 3和4)。 因此,可以容易且显着地抑制由印刷电路板(10)的电源层(11)和接地层(12)引起的电磁辐射。