Standard circuit and standard for far-end crosstalk of category 6A cable (CAT 6A)

Patent metadata

Field	Value
Publication number	US-12294345-B2
Application number	US-202318181250-A
Country	US
Kind code	B2
Filing date	Mar 9, 2023
Priority date	Sep 29, 2022
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

A standard circuit for far-end crosstalk of a CAT 6A, including a first network connector and a second network connector. The first network connector includes a first transmitted signal pair and a first received signal pair. The second network connector is connected to the first network connector, and includes a second transmitted signal pair and a second received signal pair. The second transmitted signal pair is connected to the first transmitted signal pair. A first load is connected in series between the second received signal pair. A standard for far-end crosstalk of the CAT 6A is also provided.

First claim

What is claimed is:

1. A standard circuit for far-end crosstalk of a category 6A cable (CAT 6A), comprising:
a first network connector; and
a second network connector;
wherein the first network connector comprises a first transmitted signal pair and a first received signal pair; the second network connector is connected to the first network connector; the second network connector comprises a second transmitted signal pair and a second received signal pair; the first transmitted signal pair is connected to the second transmitted signal pair; and a first load is connected in series between the second received signal pair; and
the first received signal pair is not directly connected to the second transmitted signal pair and the second received signal pair.

2. The standard circuit of claim 1 , wherein the first network connector further comprises a first spare signal pair and a second spare signal pair; the second network connector further comprises a third spare signal pair and a fourth spare signal pair; a second load is connected in series between the third spare signal pair; and a third load is connected in series between the fourth spare signal pair.

3. The standard circuit of claim 2 , wherein the first transmitted signal pair comprises a first transmitted positive signal pin and a first transmitted negative signal pin; the first received signal pair comprises a first received positive signal pin and a first received negative signal pin; the first spare signal pair comprises a first spare signal pin and a second spare signal pin; and the second spare signal pair comprises a third spare signal pin and a fourth spare signal pin; and
a first capacitor is connected in series between the first transmitted positive signal pin and the first received positive signal pin; a second capacitor is connected in series between the first transmitted positive signal pin and the second spare signal pin;
and a third capacitor is connected in series between the first transmitted positive signal pin and the third spare signal pin.

4. The standard circuit of claim 3 , wherein the second transmitted signal pair comprises a second transmitted positive signal pin and a second transmitted negative signal pin; the second transmitted positive signal pin is connected to the first transmitted positive signal pin; the second transmitted negative signal pin is connected to the first transmitted negative signal pin; a fourth capacitor is connected in series between the second transmitted negative signal pin and the fourth spare signal pin; and a fifth capacitor is connected in series between the second transmitted negative signal pin and the first spare signal pin.

5. The standard circuit of claim 4 , wherein the second received signal pair comprises a second received positive signal pin and a second received negative signal pin; the third spare signal pair comprises a fifth spare signal pin and a sixth spare signal pin; the fourth spare signal pair comprises a seventh spare signal pin and an eighth spare signal pin and a sixth capacitor is connected in series between the second transmitted negative signal pin and the second received negative signal pin;
a first end of the first load is connected to the second received positive signal pin;
and a second end of the first load is connected to the second received negative signal pin;
a first end of the second load is connected to the fifth spare signal pin; and a second end of the second load is connected to the sixth spare signal pin; and
a first end of the third load is connected to the seventh spare signal pin; and a second end of the third load is connected to the eighth spare signal pin.

6. The standard circuit of claim 2 , wherein the first load, the second load and the third load each comprise a resistor; and the resistor of the first load, the resistor of the second load and the resistor of the third load have the same resistance.

7. The standard circuit of claim 1 , wherein the first network connector and the second network connector each comprise a registered jack 45 (RJ45).

8. A standard for far-end crosstalk of a CAT 6A, comprising:
a motherboard; and
the standard circuit of claim 1 ;
wherein the standard circuit is fixedly arranged on the motherboard.

9. The standard of claim 8 , further comprising:
a first crossover cable; and
a second crossover cable;
wherein the first crossover cable and the second crossover cable are both connected to the standard circuit.

Assignees

• Nat Inst Metrology China

Inventors

• Zhou Xin
• Shen Qingfei
• Wu Tong

Classifications

• G01R31/58

  Testing of lines, cables or conductors (testing of electric windings G01R31/72) · CPC title

• G01R35/04

  of instruments for measuring time integral of power or current · CPC title

• H03H7/0138 Primary

  Electrical filters or coupling circuits · CPC title

• H04B3/487 Primary

  Testing crosstalk effects · CPC title

• G01R31/08 Primary

  Locating faults in cables, transmission lines, or networks · CPC title