Crosstalk reducing conductor and contact configuration in a communication system

• US 8,958,545 B2
• Filed: 02/27/2013
• Issued: 02/17/2015
• Est. Priority Date: 11/17/2004
• Status: Active Grant

• Current Assignee: Belden Canada ULC (Belden Inc.)
• Original Assignee: Belden CDT (Canada) Inc. (Belden Inc.)
• Inventors: Pelletier, Antoine, Milette, Luc, Bohbot, Michel, Vexler, Gavriel
• Primary Examiner(s): Jamal, Alexander
• Application Number:
  US13/779,517
• Publication Number:
  US 20130177150A1
• Time in Patent Office: 720 Days
• Field of Search: 379/417
• US Class Current: 379/417
• CPC Class Codes: H01R 13/6461 Means for preventing cross-talk
• CPC Class Codes: H01R 13/6473 Impedance matching
• CPC Class Codes: H01R 13/6477 by variation of dielectric properties
• CPC Class Codes: H01R 4/2416 the contact members having insulation-cutting edges, e.g. of tuning fork type
• CPC Class Codes: H01R 4/242 the contact members being plates having a single slot
• CPC Class Codes: H04M 3/18 with means for reducing interference or noise; with means for reducing effects due to line faults with means for protecting lines

Abstract

There is disclosed a method for reducing cross talk between first and second cables in a data transmission system, each of the cables comprised of a pair of conductors. The method comprises the steps of providing a first contact interconnected with a first conductor of the pair of conductors of the first cable, wherein the first contact emits a first signal, providing a pair of contacts, each of the pair of contacts interconnected with a different conductor of the pair of conductors of the second cable, and positioning the first contact relative to the pair of contacts such that an amplitude of the signal received at one of the second pair of contacts is substantially the same as an amplitude of the signal received at another of the second pair of contacts.

Claims

1. A method for reducing cross talk between first and second cables in a data transmission system, each of the cables comprised of a pair of conductors, the method comprising the steps of:

providing a first contact directly interconnected with a first conductor of the pair of conductors of the first cable, wherein said first contact emits a first signal;

providing a pair of contacts, each of said pair of contacts directly interconnected with a different conductor of the pair of conductors of the second cable; and

positioning said first contact relative to said pair of contacts such that an amplitude of said first signal received at one of said second pair of contacts is the same as the amplitude of said first signal received at another of said second pair of contacts.

2. The method of claim 1, further comprising the steps of providing a second contact directly interconnected with a second conductor of the pair of conductors of the first cable and wherein said second contact emits a second signal, and positioning said second contact relative to said pair of contacts such that an amplitude of said second signal received at one of said second pair of contacts is the same as an amplitude of said second signal received at another of said second pair of contacts.

3. The method of claim 1, wherein each of said contacts is flat and said positioning step comprises orienting said contacts such that a long surface of said first contact is perpendicular to a long surface of each of said pair of contacts.

4. The method of claim 1, wherein said positioning step comprises placing said pair of contacts symmetrically about said first contact.

5. The method of claim 1, wherein said positioning step comprises placing said first contact equidistant from each of said pair of contacts.

6. The method of claim 1, wherein each of said pair of contacts is flat and said positioning step comprises placing said first contact such that a line normal to a long surface of either of said pair of contacts does not intersect said first contact.

7. The method of claim 1, wherein each of the pair of conductors are twisted.

8. The method of claim 1, wherein each of the pair of conductors are in parallel.

9. A method for reducing cross talk between first and second cables in a data transmission system, each of the cables comprised of a pair of conductors, the method comprising the steps of:

providing a pair of contacts, each of said pair of contacts directly interconnected with a different conductor of the pair of conductors of the first cable, wherein one of said pair of contacts emits a first signal which is an inverse of a second signal emitted by another of said pair of contacts;

providing at least one first contact directly interconnected with one of the pair of conductors of the second cable; and

positioning said pair of contacts relative to said first contact such that an amplitude of said first signal received by said first contact is opposite to an amplitude of said second signal received by said first contact.

10. The method of claim 9, further comprising the steps of providing a second contact directly interconnected with a second conductor of the pair of conductors of the second cable and positioning said pair of contacts relative to said second contact such that an amplitude of said first signal received by said second contact is opposite to an amplitude of said second signal received by said second contact.

11. The method of claim 9, wherein each of said contacts is flat and said positioning step comprises orienting said contacts such that a long surface of said first contact is perpendicular to a long surface of either of said pair of contacts.

12. The method of claim 9, wherein said positioning step comprises placing said pair of contacts symmetrically about said first contact.

13. The method of claim 9, wherein said positioning step comprises placing said first contact equidistant from each of said pair of contacts.

14. The method of claim 9, wherein each of said contacts is flat and said positioning step comprises placing said first contact such that a line normal to a long surface of either of said pair of contacts does not intersect said first contact.

15. A method for reducing cross talk in a data transmission system, the method comprising the steps of:

providing a first transmission path comprised of at least one first conductor, said first conductor emitting a signal;

providing a second transmission path comprised of a second pair of conductors;

positioning said first conductor relative to said second pair of conductors such that an amplitude of said signal received along one of said second pair of conductors is the same as an amplitude of said signal received along another of said second pair of conductors.

16. The method of claim 15, wherein each of said conductors comprises a conductive trace etched on a Printed Circuit Board (PCB).

17. The method of claim 15, further comprising the step of surrounding said first and second transmission path with a cable housing.

18. The method of claim 15, wherein said first transmission path further comprises a second conductor, said second conductor emitting a second signal, and further comprising the step of positioning said second conductor relative to said pair of conductors such that an amplitude of said second signal received at one of said second pair of contacts is the same as an amplitude of said second signal received at another of said second pair of contacts.

19. The method of claim 15, wherein said positioning step comprises placing said pair of conductors symmetrically about said first conductor.

20. The method of claim 15, wherein said conductors are arranged in parallel.

21. The method of claim 15, wherein said positioning step comprises placing said first conductor at the same distance from each of said pair of conductors.

22. The method of claim 15, wherein each of said conductors comprises an elongate transverse cross section and said positioning step comprises placing said first conductor such that a line normal to a long surface of either of said pair of conductors does not intersect said first conductor.

23. The method of claim 15, wherein each of said conductors comprises an elongate transverse cross section and said positioning step comprises orienting said conductors such that a long surface of said first conductor is perpendicular to a long surface of each of said pair of conductors.

24. A method for reducing cross talk in a data transmission system, the method comprising the steps of:

providing a first transmission path comprised of a first conductor;

providing a second transmission path comprised of a pair of conductors, wherein one of said pair of conductors emits a first signal which is an inverse of a second signal emitted by another of said pair of conductors; and

positioning said pair of conductors relative to said first conductor such that an amplitude of said first signal received by said first conductor is opposite to an amplitude of said second signal received by said first conductor.

25. The method of claim 24, wherein said first transmission path further comprises a second conductor, and further comprising the step of positioning said pair of conductors relative to said second conductor such that an amplitude of said first signal received by said second conductor is opposite to an amplitude of said second signal received by said second conductor.

26. The method of claim 24, wherein said positioning step comprises placing said pair of conductors symmetrically about said first conductor.

27. The method of claim 24, wherein said conductors are arranged in parallel.

28. The method of claim 24, wherein said positioning step comprises placing said first conductor at the same distance from each of said pair of conductors.

29. The method of claim 24, wherein each of said conductors comprises an elongate transverse cross section and said positioning step comprises placing said first conductor such that a line normal to a long surface of either of said pair of conductors does not intersect said first conductor.

30. The method of claim 24, wherein each of said conductors comprises an elongate transverse cross section and said positioning step comprises orienting said conductors such that a long surface of said first conductor is perpendicular to a long surface of each of said pair of conductors.