Add-in card connector contact optimization for high-speed signaling
A contact for a high-speed data communication interface includes a first portion configured to be coupled to a first component associated with the high-speed data communication interface, a second portion configured to be coupled to a mating contact of a second component associated with the high-speed data communication interface, and a third portion configured to provide a sliding surface when coupled to the mating contact. The sliding surface is coated with a ferromagnetic coating.
1. A contact for a high-speed data communication interface, the contact comprising:
a first portion configured to be coupled to a first component associated with the high-speed data communication interface;
a second portion configured to be coupled to a mating contact of a second component associated with the high-speed data communication interface; and
a third portion configured to provide a sliding surface when coupled to the mating contact, wherein the sliding surface is coated with a ferromagnetic coating.
2. The contact of claim 1 , wherein the sliding surface presents an open-circuit stub when a signal of the high-speed data communication interface is transmitted through the contact.
3. The contact of claim 2 , wherein the ferromagnetic coating operates to reduce a resonance of the open-circuit stub.
4. The contact of claim 2 , wherein the ferromagnetic coating operates to reduce an insertion loss through the contact.
5. The contact of claim 1 , wherein the ferromagnetic coating comprises a bonding material infused with a ferromagnetic material.
6. The contact of claim 5 , wherein the coating material comprises one of a paint, an epoxy, a powder coating, and a sealant.
7. The contact of claim 5 , wherein the ferromagnetic material comprises one of iron particles, nickel particles, cobalt particles, neodymium magnet particles, and rare earth magnetic particles.
8. The contact of claim 1 , wherein the contact is fabricated of one of copper, and bronze.
9. The contact of claim 8 , wherein the contact is plated with one of gold, copper, tin, and tin-lead.
10. A method for forming a contact for a high-speed data communication interface, the method comprising:
forming, on the contact, a first portion configured to be coupled to a first component associated with the high-speed data communication interface;
forming a second portion configured to be coupled to a mating contact of a second component associated with the high-speed data communication interface;
forming a third portion configured to provide a sliding surface when coupled to the mating contact; and
coating the sliding surface with a ferromagnetic coating.
11. The method of claim 10 , wherein the sliding surface presents an open-circuit stub when a signal of the high-speed data communication interface is transmitted through the contact.
12. The method of claim 11 , wherein the ferromagnetic coating operates to reduce a resonance of the open-circuit stub.
13. The method of claim 11 , wherein the ferromagnetic coating operates to reduce an insertion loss through the contact.
14. The method of claim 10 , wherein the ferromagnetic coating comprises a bonding material infused with a ferromagnetic material.
15. The method of claim 14 , wherein the coating material comprises one of a paint, an epoxy, a powder coating, and a sealant.
16. The method of claim 14 , wherein the ferromagnetic material comprises one of iron particles, nickel particles, cobalt particles, neodymium magnet particles, and rare earth magnetic particles.
17. The method of claim 10 , wherein the contact is fabricated of one of copper, and bronze.
18. The method of claim 17 , wherein the contact is plated with one of gold, copper, tin, and tin-lead.
19. A connector for coupling an add-in card to a printed circuit board, the connector comprising:
a housing configured to be affixed to the printed circuit board and including a slot for retaining the add-in card; and
a contact for a high-speed data communication interface between the printed circuit board and the add-in card, the contact including:
a first portion configured to be coupled to a first component associated with the high-speed data communication interface;
a second portion configured to be coupled to a mating contact of a second component associated with the high-speed data communication interface; and
a third portion configured to provide a sliding surface when coupled to the mating contact, wherein the sliding surface is coated with a ferromagnetic coating.
20. The contact of claim 19 , wherein the sliding surface presents an open-circuit stub when a signal of the high-speed data communication interface is transmitted through the contact.