Communications medium connector with integrated common-mode noise suppression
View Patent ↗According to one exemplary embodiment, a connector for coupling a communications medium to an electronic device includes a common-mode suppression block coupled to a number of connector pins. The common-mode suppression block is configured to reduce common-mode noise coupling between the communications medium and the connector pins in the connector. The common-mode suppression block is further configured to provide substantially no attenuation to a differential-mode signal. In one embodiment, the communications medium is an Ethernet cable and the connector is an Ethernet plug. In one embodiment, the common-mode suppression block comprises common-mode chokes. In one embodiment, the connector is an RJ45 plug.
1. A connector for coupling a communications medium to an electronic device, said connector comprising:
a common-mode suppression block coupled to a plurality of connector pins;
said common-mode suppression block being configured to reduce common-mode noise coupling between said communications medium and said plurality of connector pins.
2. The connector of claim 1 , wherein said common-mode suppression block comprises at least one common-mode choke configured to attenuate said common-mode noise.
3. The connector of claim 2 , wherein said at least one common-mode choke comprises a ferrite toroid core.
4. The connector of claim 1 , wherein said connector is an RJ45 plug.
5. The connector of claim 1 , wherein said communications medium is an Ethernet cable.
6. The connector of claim 1 , wherein said common-mode suppression block comprises two common-mode chokes.
7. The connector of claim 6 , wherein each of said two common-mode chokes is coupled to two differential pairs in said communications medium.
8. The connector of claim 1 , wherein said common-mode suppression block is further configured to allow power over Ethernet to be utilized on said communications medium.
9. The connector of claim 1 , wherein said common-mode suppression block comprises a transformer configured to attenuate said common-mode noise.
10. The connector of claim 1 , wherein said common-mode suppression block is further configured to provide substantially no attenuation to a differential-mode signal.
11. A communications system comprising:
an electronic device coupled to a communications medium via a connector attached to said communications medium;
said connector comprising a plurality of connector pins and a common-mode suppression block;
said common-mode suppression block being configured to reduce common-mode noise coupling between said communications medium and said plurality of connector pins.
12. The communications system of claim 11 , wherein said common-mode suppression block comprises at least one common-mode choke configured to attenuate said common-mode noise.
13. The communications system of claim 12 , wherein said at least one common-mode choke comprises a ferrite toroid core.
14. The communications system of claim 11 , wherein said communications medium is an Ethernet cable.
15. The communications system of claim 11 , wherein electronic device comprises a common-mode suppression module coupled to said plurality of connector pins in said connector.
16. The communications system of claim 11 , wherein said electronic device comprises an RJ45 jack coupled to said connector.
17. The communications system of claim 11 , wherein said common-mode suppression block comprises two common-mode chokes, and wherein each of said two common-mode chokes is coupled to two differential pairs in said communications medium.
18. The communications system of claim 11 , wherein said common-mode suppression block is further configured to allow power over Ethernet to be utilized on said communications medium.
19. The communications system of claim 11 , wherein said common-mode suppression block reduces differential-mode noise in said electronic device.
20. The communications system of claim 11 , wherein said electronic device is an Ethernet device.