公开(公告)号：US10999929B2

公开(公告)日：2021-05-04

申请号：US16714181

申请日：2019-12-13

Applicant: Quanta Computer Inc.

Inventor： Che-Wei Chang ,  Cheng-Hsien Lee

IPC: H05K1/11 ,  H05K1/14 ,  H05K5/02 ,  H05K5/04 ,  G06K19/067 ,  G06K19/077 ,  H01R12/00 ,  H01R13/64 ,  H01R13/6461 ,  H05K3/04 ,  H05K3/06 ,  H05K3/40

Abstract: The present disclosure describes expansion card interfaces for a printed circuit board and methods of making the same. The methods include forming electrical pads of the expansion card interface on a substrate, and dividing at least one electrical pad into a first portion and a second portion. The resulting expansion card interfaces have the first portion conductively coupled to a circuit on the printed circuit board, and the second portion conductively isolated from the first portion.

公开(公告)号：US20200383205A1

公开(公告)日：2020-12-03

申请号：US16714181

申请日：2019-12-13

Applicant: Quanta Computer Inc.

Inventor： Che-Wei Chang ,  Cheng-Hsien Lee

IPC: H05K1/11 ,  H05K3/40 ,  H05K3/04 ,  H05K3/06

Abstract: The present disclosure describes expansion card interfaces for a printed circuit board and methods of making the same. The methods include forming electrical pads of the expansion card interface on a substrate, and dividing at least one electrical pad into a first portion and a second portion. The resulting expansion card interfaces have the first portion conductively coupled to a circuit on the printed circuit board, and the second portion conductively isolated from the first portion.

公开(公告)号：US11582862B2

公开(公告)日：2023-02-14

申请号：US17371946

申请日：2021-07-09

Applicant: QUANTA COMPUTER INC.

Inventor： Che-Wei Chang

IPC: H05K1/02 ,  H01P1/20 ,  H05K3/10

Abstract: A high-speed circuit includes a printed circuit board, a ground plane layer, a pair of first and second differential traces, and a cascading common mode filter. The printed circuit board has a first surface and an opposite second surface. The ground plane layer has a first surface in contact with the second surface of the printed circuit board. The pair of first and second differential traces are on the first surface of the printed circuit board. The first and second differential traces carry an electrical signal. The cascading common mode filter includes an outer and an inner common mode filter. The outer common mode filter includes a U-shaped void section on the first surface of the ground plane layer. The inner common mode filter includes an H-shaped void section on the first surface of the ground plane layer. The H-shaped void section is located proximate to the U-shaped void section.