US 2021/0282260 A1 · PCB RF NOISE GROUNDING FOR SHIELDED HIGH-SPEED INTERFACE CABLE

Abstract

A printed circuit board (PCB) includes a substrate defining a major plane. A first side of the major plane is configured for mounting of functional circuit elements. A cable connector is mounted on a second side of the major plane of the substrate, opposite the first side, for coupling to a shielded radiofrequency (RF) communications cable. At least one component grounding layer is parallel to the major plane and configured for coupling to the functional elements. At least one cable grounding layer is parallel to the major plane and is separated from the at least one component grounding layer. Each cable grounding layer in the at least one cable grounding layer is coextensive with the substrate and is configured for coupling, through the connector, to shielding of the shielded RF communications cable, without coupling to any other component. Nodes of an RF communications system may be mounted on such PCBs.

Claims21

Dependent claims

A printed circuit board comprising:

a substrate defining a major plane;
a first side of the major plane of the substrate configured for mounting thereon of functional circuit elements;
a cable connector mounted on a second side of the major plane of the substrate, opposite the first side, for coupling to a shielded radiofrequency (RF) communications cable;
at least one component grounding layer parallel to the major plane configured for coupling to the functional elements;
and
at least one cable grounding layer parallel to the major plane and separated from the at least one component grounding layer, each cable grounding layer in the at least one cable grounding layer being coextensive with the substrate and being configured for coupling, through the connector, to shielding of the shielded RF communications cable, without coupling to any other component.

3 more elements

A wireline radiofrequency (RF) communications system, comprising:

a plurality of nodes, at least one node in the plurality of nodes comprising:
at least one functional circuit component, and
a printed circuit board having a substrate defining a major plane, wherein the at least one functional circuit component is mounted on a first side of the major plane of the substrate, the printed circuit board further including:
a cable connector mounted on a second side of the major plane of the substrate, opposite the first side,
at least one component grounding layer parallel to the major plane and coupled to the at least one functional component, and
at least one cable grounding layer parallel to the major plane and separated from the at least one component grounding layer, each cable grounding layer in the at least one cable grounding layer being coextensive with the substrate;
and
a shielded RF cable coupled to the cable connector for coupling the at least one node to another node in the plurality of nodes, and having shielding that is conductively coupled, through the connector, to the at least one cable grounding layer, each cable grounding layer in the at least one cable grounding layer being without coupling to any other component.

5 more elements

Dependencies are inferred from the claim text.

Pcb rf noise grounding for shielded high-speed interface cable

Life of this patent

Pcb rf noise grounding for shielded high-speed interface cable

Life of this patent

Abstract

Claims21