Cable structure

Patent metadata

Field	Value
Publication number	US-2016247604-A1
Application number	US-201514800114-A
Country	US
Kind code	A1
Filing date	Jul 15, 2015
Priority date	Feb 25, 2015
Publication date	Aug 25, 2016
Grant date	—

Abstract

A cable structure includes isolation layers, a first signal wire, a second signal wire, a first ground wire, a second ground wire, a first conductor, and a second conductor. These signal and ground wires are parallel along a first direction and between the isolation layers. These signal wires are adjacent, and the ground wires are respectively at outer sides of these signal wires. The first conductor is on at least one of the isolation layers along a second direction orthogonal to the first direction and is electrically connected to the first and second ground wires. The second conductor is on an outer surface of at least one of the second isolation layers along the first direction and is electrically connected to the first conductor. The second conductor is symmetrical based on a central line between the first and second signal wires.

First claim

What is claimed is:

1 . A cable structure for suppressing electromagnetic interference, comprising:
a first insulation layer; a second insulation layer on the first insulation layer; a plurality of conductive wires paralleling to each other and between the first and second insulation layers along a first direction and comprising a first signal conductive wire, a second signal conductive wire, a first ground conductive wire, and a second ground conductive wire, the first and second signal conductive wires being adjacent to each other, and the first and second ground conductive wires respectively being an outer side of one of the first and second signal conductive wires and an outer side of the other one of the first and second signal conductive wires; a first conductor being in a second direction and on at least one of the first and second insulation layers and electrically connected to the first and second ground conductive wires; and a second conductor being in the first direction and on an outer surface of at least one of the first and second insulation layers, being electrically connected to the first conductor, and being symmetrical based on a virtual central line between the first and second signal conductive wires; wherein the first direction is sufficiently vertical to the second direction.

2 . The cable structure according to claim 1 , wherein the cable structure further comprises a third conductor that is in the second direction and on an outer surface of at least one of the first and second insulation layers and is electrically connected to the second conductor, and the third conductor being symmetrical based on the virtual central line.

3 . The cable structure according to claim 1 , wherein when the first conductor is on the outer surface of at least one of the first and second insulation layers, the first or second insulation layer comprises a first through hole and a second through hole, and the first conductor is electrically connected to the first and second ground conductive wires respectively through the first and second through holes.

4 . The cable structure according to claim 3 , wherein the first through hole overlaps the first ground conductive wire, and the second through hole overlaps the second ground conductive wire.

5 . The cable structure according to claim 1 , wherein when the first conductor is on an inner surface of at least one of the first and second insulation layers, a connector is on outer surfaces of the first and second insulation layers, a location of the connector corresponds to a location of the first conductor, and a casing of the connector comprises an opening that exposes a part of the first conductor.

6 . The cable structure according to claim 5 , wherein an extended direction of the opening is sufficiently parallel to the first direction.

7 . The cable structure according to claim 5 , wherein a width of the opening is different from a width of the second conductor.

8 . The cable structure according to claim 1 , wherein an orthogonal projection of the second conductor is between the first signal conductive wire and the second signal conductive wire.

9 . The cable structure according to claim 1 , wherein a width of a part of the second conductor far from the first conductor is different from a width of a part of the second conductor close to the first conductor.

10 . The cable structure according to claim 1 , wherein the conductive wires have the same pitch therebetween.

11 . A cable structure for suppressing electromagnetic interference, comprising:
a first insulation layer; a second insulation layer on the first insulation layer; a plurality of conductive wires parallel to each other and between the first and second insulation layers along a first direction and comprising a first signal conductive wire, a second signal conductive wire, a first ground conductive wire, and a second ground conductive wire, the first and second signal conductive wires being adjacent to each other, the first and second ground conductive wires respectively being an outer side of one of the first and second signal conductive wires and an outer side of the other one of the first and second signal conductive wires; a first conductor being in a second direction and on at least one of the first and second insulation layers and being electrically connected to the first and second ground conductive wires; and a second conductor being in the first direction and on an outer surface of at least one of the first and second insulation layers and being electrically connected to the first conductor, and the first and second signal conductive wires being symmetrical to each other based on the second conductor; wherein the first direction is sufficiently vertical to the second direction.

12 . The cable structure according to claim 11 , wherein locations of the first and second signal conductive wires are sufficiently symmetrical based on a virtual central line of the second conductor.

13 . The cable structure according to claim 12 , wherein the cable structure further comprises a third conductor that is in the second direction and on an outer surface of at least one of the first and second insulation layers and is electrically connected to the second conductor, and the third conductor is symmetrical based on the virtual central line.

14 . The cable structure according to claim 11 , wherein when the first conductor is on an outer surface of at least one of the first and second insulation layers, the first conductor is electrically connected to the first ground conductive wire and the second ground conductive wire respectively through a first through hole and a second through hole of the first or second insulation layer.

15 . The cable structure according to claim 14 , wherein the first through hole overlaps the first ground conductive wire, and the second through hole overlaps the second ground conductive wire.

16 . The cable structure according to claim 11 , wherein when the first conductor is on an inner surface of at least one of the first and second insulation layers, a connector is on outer surfaces of the first and second insulation layers, a location of the connector corresponds to a location of the first conductor, and a casing of the connector comprises an opening exposing a part of the first conductor.

17 . The cable structure according to claim 16 , wherein an extended direction of the opening is sufficiently parallel to the first direction.

18 . The cable structure according to claim 16 , wherein a width of the opening is different from a width of the second conductor.

19 . The cable structure according to claim 11 , wherein an orthogonal projection of the second conductor is between the first signal conductive wire and the second signal conductive wire.

20 . The cable structure according to claim 11 , wherein a width of a part of the second conductor, far from the first conductor, is different from a width of a part of the second conductor close to the first conductor.

21 . The cable structure according to claim 11 , wherein the conductive wires have the same pitch therebetween.

Assignees

• Wistron Corp

Inventors

• Chiou Sheng-Lun
• Chen Yin-Yu

Classifications

• H01P1/2135

  using strip line filters (H01P1/2131 takes precedence) · CPC title

• H05K1/0219

  Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors · CPC title

• H01B7/0823

  Parallel wires, incorporated in a flat insulating profile · CPC title

• H01P1/202

  Coaxial filters (cascaded coaxial cavities H01P1/205) · CPC title

• H01P1/205

  Comb or interdigital filters; Cascaded coaxial cavities (H01P1/203 takes precedence) · CPC title