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    • 3. 发明授权
    • High speed bus with radio frequency microstrip
    • 高速总线带射频微带线
    • US07249338B2
    • 2007-07-24
    • US10847507
    • 2004-05-17
    • Tze-Chuen Toh
    • Tze-Chuen Toh
    • G06F17/50
    • H01P3/081H05K1/024H05K2201/09036H05K2201/09063H05K2201/09236
    • A method for preparing a printed circuit board and an apparatus are provided to decrease losses associated with high speed signal propagation. The printed circuit board has at least two conductive layers separated by an dielectric layer formed of a dielectric material. A conductive path is formed in one of the conductive layers for propagation of the high speed signal. At least a portion of the dielectric layer is removed on both sides of and adjacent to the conductive path. The removed portion extends in the dielectric layer between the conductive layers from one to the other and includes a hole shaped portion and a trough shaped portion. The removed portion does not extend beyond the dielectric layer.
    • 提供一种用于制备印刷电路板和装置的方法,以减少与高速信号传播相关联的损耗。 印刷电路板具有由介电材料形成的电介质层分开的至少两个导电层。 在导电层之一中形成导电路径,用于传播高速信号。 电介质层的至少一部分在导电路径的两侧和邻近的导电路径上被去除。 去除部分在导电层之间的电介质层中从一个延伸到另一个,并且包括孔形部分和槽形部分。 去除的部分不延伸超过介电层。
    • 5. 发明授权
    • Electromagnetic interference reduction system
    • 电磁干扰降低系统
    • US06639144B1
    • 2003-10-28
    • US09945078
    • 2001-08-31
    • Tze-Chuen Toh
    • Tze-Chuen Toh
    • H01B500
    • G06F1/182H05K1/0233H05K9/0039H05K9/0066
    • A system and method incorporate one or more magnets affixed in proximity to a ground plane of a printed circuit board such that the magnetic flux of the magnet is operable to perturb current flow through the ground plane, resulting in a reduction in electromagnetic emissions. The invention is implemented with various types of magnets in different embodiments, including rare-earth magnets, AlNiCo magnets, Neodymium magnets, and flat-sheet magnets. A digital electronic device consistent with the present invention incorporates one or more magnets in proximity to a ground plane of a circuit board within the device, such devices including computers, set-top boxes, and personal digital assistants in various embodiments.
    • 一种系统和方法包括一个或多个固定在印刷电路板的接地平面附近的磁体,使得磁体的磁通量可操作以扰乱通过接地平面的电流,导致电磁辐射的减少。 本发明在不同实施例中的各种类型的磁体实现,包括稀土磁体,AlNiCo磁体,钕磁体和平板磁体。 符合本发明的数字电子设备包括在设备内的电路板接地平面附近的一个或多个磁体,这些设备包括计算机,机顶盒和个人数字助理。