Fiber weave-sandwiched differential pair routing technique

    公开(公告)号:US10716209B2

    公开(公告)日:2020-07-14

    申请号:US16565639

    申请日:2019-09-10

    Abstract: To overcome the problem of the fiber weave effect desynchronizing differential signals in a pair of traces of approximately the same length in a printed circuit board, the pair of traces can be routed to traverse largely parallel paths that are above one another in the printed circuit board. The material between the paths can include weaved fiber bundles. The material on opposite sides of the paths, surrounding the pair of traces and the weaved fiber bundles, can include resin-rich material. As a result, the pair of traces are directly adjacent to the same materials, which can allow signals in the traces to propagate at the same speed, and prevent desynchronization of differential signals traversing the paths. The path length difference associated with traversing to different depths can be compensated with a relatively small in-plane diagonal jog of one of the traces.

    MULTI-PLANAR CIRCUIT BOARD HAVING REDUCED Z-HEIGHT

    公开(公告)号:US20190008052A1

    公开(公告)日:2019-01-03

    申请号:US16003970

    申请日:2018-06-08

    Abstract: Disclosed herein is a multi-planar circuit board, as well as related structures and methods. In an embodiment, a circuit board may include a first surface, a first section having the first surface in a first plane, a second section having the first surface in a second plane, and a third section connecting the first and second sections, where the third section defines a gradient between the first and second planes, and where all sections are sections within a contiguous board. In another embodiment, circuit board may further include a first component having a first thickness coupled on the first face of the first section, and a second component having a second thickness, greater than the first component, coupled on the first face of the second section, where the second section is in a lower plane, and where the overall thickness is the circuit board thickness plus the second thickness.

    TECHNOLOGIES FOR AN ELECTROMAGNETIC INTERFERENCE SHIELD

    公开(公告)号:US20250113428A1

    公开(公告)日:2025-04-03

    申请号:US18478967

    申请日:2023-09-29

    Abstract: Technologies for a shield for electromagnetic interference include a circuit board with an integrated circuit package on it, with a hole in the circuit board under the integrated circuit package. The integrated circuit package may include one or more dies or other components on the underside of the package, at least partially positioned in the hole in the circuit board. An electromagnetic shield box can be positioned in the hole. Tabs of the electromagnetic shield box may interface with pads on the same side of the circuit board as the integrated circuit package. The electromagnetic shield box may prevent or reduce electromagnetic or radiofrequency interference on the components of the integrated circuit package. Positioning the electromagnetic shield box can reduce the overall height of the circuit board, among other advantages.

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