UTP cable for transmitting high frequency signal

• US 20070026742A1
• Filed: 07/19/2006
• Published: 02/01/2007
• Est. Priority Date: 07/28/2005
• Status: Abandoned Application

• Current Assignee: LS Cable Limited (LS Corporation)
• Original Assignee: LS Cable Limited (LS Corporation)
• Inventors: Baeck, Jong-Seb, Nam, Gi-Joon, Park, Chan-Yong, Dong, Woo-Yong
• Application Number:
  US11/489,910
• Publication Number:
  US 20070026742A1
• Time in Patent Office: Days
• US Class Current: 439/676
• CPC Class Codes: H01B 11/04 with pairs or quads mutually positioned to reduce cross-talk

Abstract

A UTP (Unshielded Twisted Pair) cable having an electromagnetic wave shielding function is configured to allow transmission of over 10 Gbps level without align cross talk with an adjacent cable when using 500 to 700 MHz band. This UTP cable includes at least one wire pair in which two insulation-coated wires are spirally twisted, an electromagnetic wave shielding sheath surrounding the wire pair and made of polymer resin and conductive material, and an insulating sheath surrounding the electromagnetic wave shielding sheath and made of insulating material.

Claims

1. An UTP (Unshielded Twisted Pair) cable, comprising:

at least one wire pair in which two insulation-coated wires are spirally twisted;

an electromagnetic wave shielding sheath surrounding the wire pair and made of polymer resin and conductive material; and

an insulating sheath surrounding the electromagnetic wave shielding sheath and made of insulating material.

2. The UTP cable according to claim 1,

wherein the conductive material of the electromagnetic wave shielding sheath is one selected from the group consisting of carbon black, acetylene black, metal fiber, conductive polymer and metal powder, or their mixtures.

3. The UTP cable according to claim 2,

wherein the mixture includes conductive polymer or acetylene black.

4. The UTP cable according to claim 1,

wherein the electromagnetic wave shielding sheath includes 20 to 120 phr of conductive material on the basis of 100 phr of polymer resin.

5. The UTP cable according to claim 1,

wherein the conductive material includes 0 to 70 phr of acetylene black and 20 to 50 phr of conductive polymer on the basis of 100 phr of polymer resin.

6. The UTP cable according to claim 1,

wherein the electromagnetic wave shielding sheath has an electromagnetic wave shielding efficiency rate of 10 to 40 dB.

7. The UTP cable according to claim 1,

wherein the electromagnetic wave shielding sheath has a thickness of 0.5 to 2.5 mm.

8. The UTP cable according to claim 1,

wherein the insulating sheath has a thickness of 1.0 to 2.0 mm.

9. The UTP cable according to claim 1,

wherein the at least one wire pair has different pitch values.

10. The UTP cable according to claim 9,

wherein the at least one wire pair has a pitch difference of 0.5 to 7.5 mm.

11. The UTP cable according to claim 9,

wherein the at least one wire pair has a pitch difference of 1.0 to 7.0 mm.

12. The UTP cable according to claim 1, further comprising a cross filler longitudinally inserted in the electromagnetic wave shielding sheath of the UTP cable so as to separate the wire pairs from each other.

13. The UTP cable according to claim 12,

wherein the cross filler has a thickness of 0.2 to 1.0 mm.

14. An UTP cable, comprising:

at least one wire pair in which two insulation-coated wires are spirally twisted;

an electromagnetic wave shielding sheath surrounding the wire pair and made of polymer resin and conductive material;

an inner insulating layer coated on an inner surface of the magnetic wave shielding sheath; and

an insulating sheath surrounding the electromagnetic wave shielding sheath and made of insulating material.

15. The UTP cable according to claim 14,

wherein the conductive material of the electromagnetic wave shielding sheath is one selected from the group consisting of carbon black, acetylene black, metal fiber, conductive polymer and metal powder, or their mixtures.

16. The UTP cable according to claim 15,

wherein the mixture includes conductive polymer or acetylene black.

17. The UTP cable according to claim 14,

wherein the electromagnetic wave shielding sheath includes 20 to 120 phr of conductive material on the basis of 100 phr of polymer resin.

18. The UTP cable according to claim 14,

wherein the conductive material includes 0 to 70 phr of acetylene black and 20 to 50 phr of conductive polymer on the basis of 100 phr of polymer resin.

19. The UTP cable according to claim 14,

wherein the electromagnetic wave shielding sheath has an electromagnetic wave shielding efficiency rate of 10 to 40 dB.

20. The UTP cable according to claim 14,

wherein the electromagnetic wave shielding sheath has a thickness of 0.5 to 2.5 mm.

21. The UTP cable according to claim 14,

wherein the insulating sheath has a thickness of 1.0 to 2.0 mm.

22. The UTP cable according to claim 14,

wherein the at least one wire pair has different pitch values.

23. The UTP cable according to claim 22,

wherein the at least one wire pair has a pitch difference of 0.5 to 7.5 mm.

24. The UTP cable according to claim 22,

wherein the at least one wire pair has a pitch difference of 1.0 to 7.0 mm.

25. The UTP cable according to claim 14, further comprising a cross filler longitudinally inserted in the electromagnetic wave shielding sheath of the UTP cable so as to separate the wire pairs from each other.

26. The UTP cable according to claim 25,

wherein the cross filler has a thickness of 0.2 to 1.0 mm.

27. The UTP cable according to claim 14,

wherein the inner insulating layer has a thickness of 0.1 to 0.5 mm.