公开(公告)号：US07345889B1

公开(公告)日：2008-03-18

申请号：US10953775

申请日：2004-09-28

Applicant: David Norte

Inventor： David Norte

IPC: H05K1/11

CPC classification number: H05K1/0216 ,  H05K1/0231 ,  H05K1/0298 ,  H05K1/162 ,  H05K2201/09318 ,  H05K2201/09781

Abstract: A method and system for reducing the release of high frequency electromagnetic energy into the environment is disclosed, wherein local regions of distributed capacitance are embedded within a printed circuit board (PCB) and adjacent the PCB conductive traces act as low pass filters and thus increase the rise and/or fall times occurring on such traces. The present invention increases very short rise and/or fall times (e.g., 200 picoseconds or less) without degrading or detrimentally affecting other signal characteristics. The present invention does not substantially affect the voltage amplitude and does not affect the bit period when lengthening the rise and/or fall time. Also, the present invention does not induce any timing jitter that may cause synchronization problems within the system.

Abstract translation: 公开了一种用于将高频电磁能释放到环境中的方法和系统，其中分布电容的局部区域嵌入在印刷电路板（PCB）中，并且邻近PCB导电迹线充当低通滤波器，因此增加 上升和/或下降时间发生在这样的痕迹上。 本发明增加非常短的上升和/或下降时间（例如，200皮秒或更少），而不降低或不利地影响其他信号特性。 本发明基本上不影响电压幅度，并且在延长上升和/或下降时间时不会影响位周期。 此外，本发明不会引起可能导致系统内的同步问题的任何定时抖动。

公开(公告)号：US07348862B1

公开(公告)日：2008-03-25

申请号：US11196658

申请日：2005-08-02

Applicant: David Norte

Inventor： David Norte

IPC: H04B3/28 ,  H01R13/66

CPC classification number: H01R13/6464 ,  H01R13/6473 ,  H01R13/66 ,  H01R13/6633 ,  H01R13/719 ,  H04L12/66

Abstract: An RJ 45 connector for unshielded CAT5 cable has electromagnetic-interference-suppression circuitry to meet the Class B conducted and radiated emissions standard. The connector comprises, in addition to signal-conditioning transformers, a current-blocking ferrite and a plurality of pairs of common-mode filters, one pair for each conductor of each active twisted pair of the cable. Each pair of filters is connected in series with each other between a conductor of an active twisted pair and a transformer winding, and meets or exceeds the impedance, reactance, and resistance curves of FIGS. 2-4. The ferrite is connected in series with each conductor of each inactive pair of the cable and across a capacitor to ground, and meets or exceeds the impedance, reactance, and resistance curves of FIGS. 5-7.

Abstract translation: 用于非屏蔽CAT5电缆的RJ 45连接器具有电磁干扰抑制电路，以满足B类传导和辐射发射标准。 该连接器除了信号调节变压器之外还包括电流阻挡铁氧体和多对共模滤波器，对于每个有源双绞线电缆的每个导体一对。 每对滤波器在有源双绞线和变压器绕组的导体之间彼此串联连接，并且满足或超过图1和图2的阻抗，电抗和电阻曲线。 2 - 4。 铁氧体与电缆的每个无效对的每个导体串联连接，并跨过电容器接地，并达到或超过图1和2的阻抗，电抗和电阻曲线。 5 - 7。

公开(公告)号：US20050059998A1

公开(公告)日：2005-03-17

申请号：US10661137

申请日：2003-09-12

Applicant: David Norte ,  Woong Yoon

Inventor： David Norte ,  Woong Yoon

IPC: H03H5/02 ,  H01P1/20 ,  H03H1/00 ,  H05K1/02 ,  A61N1/00

CPC classification number: H05K1/0233 ,  H05K2201/1006 ,  H05K2201/10636 ,  Y02P70/611

Abstract: An ultra-high-frequency notch filter (100) comprises a capacitor (102) defining a conductive trace (106) on its body (103) and extending between its terminals (104). The trace has an inductance that forms a parallel LC circuit with the capacitance of the capacitor. When mounted on a printed circuit board (120) to connect two segments of a signal line (124), the notch filter and a ground plane (122) of the PCB form a virtual conductive loop having an inductance and a capacitance whose product is the center frequency of the notch of the notch filter. The center ferquency is tuned by varying the width of the trace.

Abstract translation: 超高频陷波滤波器（100）包括在其主体（103）上限定导电迹线（106）并在其端子（104）之间延伸的电容器（102）。 该迹线具有与电容器的电容形成并联LC电路的电感。 当安装在印刷电路板（120）上以连接信号线（124）的两个部分时，陷波滤波器和PCB的接地平面（122）形成具有电感和电容的虚拟导电回路，该电感和电容的乘积为 陷波滤波器的陷波中心频率。 通过改变轨迹的宽度来调节中心频率。