Printed circuit board

印刷线路板

Abstract

A signal line (17), an electric power pattern (18) and an earth layer (19) are formed in the substrate (13). An exterior via (27) and an interior via (28) are formed in the substrate (13). The exterior via (27) which is connected to the signal line (17) is used as the signal line, and the interior via (28) which is connected to the earth layer is used for earthing. The signal line in the printed circuit board can be connected to the exterior via and can not be interrupted by the earthing. The signal line can be expended in the printed circuit board with the pattern which is more complicate comparing with the conventional pattern. Besides, the impedance matching can be reliably established.
信号线(17),电源图案(18)和接地层(19)形成在基板(13)内。外部过孔(27)和内部过孔(28)形成在基板(13)内。外部过孔(27)连接到信号线(17)。内部过孔(28)连接到接地层(24)。外部过孔用作信号线。内部过孔用作接地。印刷线路板内的信号线能够被连接到外部过孔而不会被接地中断。信号线能够以和传统图案相比复杂的图案在印刷线路板内展开。而且,能够可靠地建立阻抗匹配。

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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    CN-1249121-AMarch 29, 2000西门子公司用于具有高频构件电气设备的、特别是用于移动无线电信设备的印刷电路板

NO-Patent Citations (3)

    Title
    JP平10-41630A 1998.02.13
    JP平4-62894A 1992.02.27
    JP平8-111589A 1996.04.30

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