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    • 4. 发明申请
    • PRINTED CIRCUIT BOARD
    • 印刷电路板
    • US20140247574A1
    • 2014-09-04
    • US14353185
    • 2012-12-06
    • CANON KABUSHIKI KAISHA
    • Hiroto Tamaki
    • H01L23/552H01L23/64H01L23/50
    • H01L23/552H01L23/50H01L23/642H01L23/647H01L2924/0002H05K1/0225H05K1/0227H05K1/0231H05K1/0234H05K2201/09318H01L2924/00
    • A printed circuit board includes a printed circuit board, a semiconductor device mounted on the printed circuit board, a capacitor element mounted on the printed circuit board 2, a ground conductor plane to which a ground terminal of the semiconductor device is connected, and first and second power source conductor planes which are arranged so as not to contact with each other. The second power source conductor plane and the ground conductor plane are arranged so as to oppose to each other to form a planar capacitor. The printed circuit board has a first connecting conductor which connects a power source terminal of the semiconductor device with the second power source conductor plane, and a second connecting conductor which connects the first power source conductor plane with the second power source conductor plane through a first terminal of the capacitor element. Thereby, an electromagnetic radiation noise is reduced.
    • 印刷电路板包括印刷电路板,安装在印刷电路板上的半导体器件,安装在印刷电路板2上的电容器元件,连接半导体器件的接地端子的接地导体平面,以及第一和 第二电源导体平面被布置为不彼此接触。 第二电源导体平面和接地导体平面被布置成彼此相对以形成平面电容器。 印刷电路板具有将半导体器件的电源端子与第二电源导体平面连接的第一连接导体和将第一电源导体平面与第二电源导体平面连接的第二连接导体, 端子。 由此,降低了电磁辐射噪声。
    • 7. 发明申请
    • Transmission Line Pairs with Enhanced Coupling
    • 传输线对增强耦合
    • US20120146748A1
    • 2012-06-14
    • US13400965
    • 2012-02-21
    • Mohammad Tabatabai
    • Mohammad Tabatabai
    • H01P3/08
    • H01P3/026H05K1/024H05K1/0245H05K2201/0191H05K2201/0715H05K2201/09236H05K2201/09318
    • According to one exemplary embodiment, a circuit board for reducing dielectric loss, conductor loss, and insertion loss includes a pair of transmission lines. The pair of transmission lines has sufficient thickness to cause substantial broadside electromagnetic coupling between the pair of transmission lines, where the pair of transmission lines is sufficiently separated from a ground plane of the circuit board so as to cause negligible electromagnetic coupling to the ground plane relative to the substantial broadside electromagnetic coupling. The pair of transmission lines thereby reduce dielectric loss, conductor loss, and insertion loss for signals traversing through the transmission line pair. The pair of transmission lines can be separated from the ground plane by, for example, at least 50.0 mils.
    • 根据一个示例性实施例,用于降低介质损耗,导体损耗和插入损耗的电路板包括一对传输线。 这对传输线具有足够的厚度,以在一对传输线之间产生实质的宽边电磁耦合,其中一对传输线与电路板的接地平面充分分离,从而使接地平面的电磁耦合可以忽略不计 到实质的宽边电磁耦合。 这对传输线因此减少了穿过传输线对的信号的介质损耗,导体损耗和插入损耗。 这对传输线可以通过例如至少50.0密耳从地平面分离。