Expansion card interface for high-frequency signals

Patent metadata

Field	Value
Publication number	US-10986743-B2
Application number	US-201916704635-A
Country	US
Kind code	B2
Filing date	Dec 5, 2019
Priority date	Feb 27, 2019
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

The present disclosure describes an expansion card interface for a printed circuit board. The expansion card interface includes a substrate having an edge. The expansion card interface further includes a plurality of signal pins configured to communicate one or more signals to and from the printed circuit board. The expansion card interface further includes a plurality of ground pins adjacent to the plurality of signal pins configured to provide a ground. At least one signal pin of the plurality of signal pins extends closer to the edge of the substrate than at least one ground pin of the plurality of ground pins.

First claim

What is claimed is:

1. An expansion card comprising:
a printed circuit board formed on a substrate having an edge; and
an interface formed on the substrate, the interface including:
a plurality of signal pins connected to the printed circuit board to communicate one or more signals to and from the printed circuit board; and
a plurality of ground pins connected to the printed circuit board to provide a ground for the printed circuit board,

wherein each signal pin of the plurality of signal pins extends to and is in direct contact with the edge of the substrate,
wherein the plurality of ground pins extends up to half the length of the plurality of signal pins, and
wherein the plurality of signal pins is configured to communicate a high-frequency signal having a frequency of 4 to 10 gigahertz.

2. The expansion card of claim 1 , wherein proximal ends of the plurality of signal pins and the plurality of ground pins are aligned.

3. The expansion card of claim 1 , wherein proximal ends of the plurality of signal pins and the plurality of ground pins are offset.

4. The expansion card of claim 1 , wherein distal ends of the plurality of ground pins are aligned.

5. The expansion card of claim 1 , wherein distal ends of the plurality of ground pins are offset.

6. The expansion card of claim 1 , wherein the plurality of ground pins extends parallel to the plurality of signal pins.

Assignees

• Quanta Comp Inc

Inventors

• Lee Cheng-Hsien

Classifications

• H05K2201/048

  Second PCB mounted on first PCB by inserting in window or holes of the first PCB · CPC title

• H05K1/0245

  Lay-out of balanced signal pairs, e.g. differential lines or twisted lines · CPC title

• H01R12/721

  cooperating directly with the edge of the rigid printed circuits · CPC title

• H05K2201/10325

  Sockets, i.e. female type connectors comprising metallic connector elements integrated in, or bonded to a common dielectric support · CPC title

• H05K1/0246 Primary

  Termination of transmission lines · CPC title