Backplane alignment and stiffening apparatus for two backplanes spanning single modules

Patent metadata

Field	Value
Publication number	US-9820403-B2
Application number	US-201514962721-A
Country	US
Kind code	B2
Filing date	Dec 8, 2015
Priority date	Dec 8, 2015
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

A split backplane for a telecommunication, networking, or computing device includes a power backplane comprising power connectors; a signal backplane comprising signal connectors, wherein the signal backplane is separate from the power backplane, and wherein one or more modules are adapted to selectively connect to the power connectors and the signal connectors simultaneously; and an alignment bar connected between the power backplane and the signal backplane for alignment and stiffening of the power backplane and the signal backplane together for signal integrity and to prevent connector pins from bending or failing between the one or more modules, the power connectors, and the signal connectors.

First claim

What is claimed is:

1. A split backplane for a telecommunication, networking, or computing device, the split backplane comprising:
a power backplane comprising power connectors;
a signal backplane comprising signal connectors, wherein the signal backplane is separate from the power backplane, and wherein one or more modules are adapted to selectively connect to the power connectors and the signal connectors simultaneously; and
an alignment bar connected between the power backplane and the signal backplane for alignment and stiffening of the power backplane and the signal backplane together for signal integrity and to prevent connector pins from bending or failing between the one or more modules, the power connectors, and the signal connectors;
wherein the signal backplane has N layers and area AN and the power backplane has M layers and area AM and wherein AN×N+AM×M is less than AX×X where a backplane including both the power connectors and the signal connectors has X layers and area AX.

2. The split backplane of claim 1 , wherein the signal backplane comprises one or more thin dielectric layers and supports high signaling rates, and wherein the power backplane comprises one or more thick dielectric layers and supports high current distribution.

3. The split backplane of claim 1 , wherein a module of the one or more modules comprises module power connectors adapted to connect to the power connectors and module signal connectors adapted to connect to the signal connectors, and wherein the module power connectors and the module signal connectors are each on a circuit board.

4. The split backplane of claim 1 , wherein at least one of the power backplane and the signal backplane comprise alignment pins adapted to mate with the one or more modules for guiding physical engagement.

5. The split backplane of claim 1 , wherein the power backplane comprises control signal connectors, wherein a control module of the one or more modules is adapted to connect to the power connectors, the signal connectors, and the control signal connectors, and wherein the control module is adapted to control and manage the power backplane.

6. The split backplane of claim 1 , wherein the power backplane and the signal backplane each comprise connectors configured to connect to one another, and wherein the alignment bar comprises hollow portions that cover the connectors.

7. The split backplane of claim 1 , wherein the alignment bar comprises alignment pins adapted to guide connection with the power backplane and the signal backplane and a plurality of holes for physical connections with the power backplane and the signal backplane.

8. A method for a split backplane for a telecommunication, networking, or computing device, the method comprising
providing a power backplane comprising power connectors;
providing a signal backplane comprising signal connectors, wherein the signal backplane is separate from the power backplane, and wherein one or more modules are adapted to selectively connect to the power connectors and the signal connectors simultaneously; and
providing an alignment bar connected between the power backplane and the signal backplane for alignment and stiffening of the power backplane and the signal backplane together for signal integrity and to prevent connector pins from bending or failing between the one or more modules, the power connectors, and the signal connectors;
wherein the power backplane comprises control signal connectors, wherein a control module of the one or more modules is adapted to connect to the power connectors, the signal connectors, and the control signal connectors, and wherein the control module is adapted to control and manage the power backplane.

9. The method of claim 8 , wherein the signal backplane comprises one or more thin dielectric layers and supports high signaling rates, and wherein the power backplane comprises one or more thick dielectric layers and supports high current distribution.

10. The method of claim 8 , wherein a module of the one or more modules comprises module power connectors adapted to connect to the power connectors and module signal connectors adapted to connect to the signal connectors, and wherein the module power connectors and the module signal connectors are each on a circuit board.

11. The method of claim 8 , wherein the signal backplane has N layers and area AN and the power backplane has M layers and area AM and wherein AN×N+AM x M is less than the sum of AX×X where in a backplane including both the power connectors and the signal connectors has X layers and area AX.

12. The method of claim 8 , wherein at least one of the power backplane and the signal backplane comprise alignment pins adapted to mate with the one or more modules for guiding physical engagement.

13. The method of claim 8 , wherein the power backplane and the signal backplane each comprise connectors configured to connect to one another, and wherein the alignment bar comprises hollow portions that cover the connectors.

14. The method of claim 8 , wherein the alignment bar comprises alignment pins adapted to guide connection with the power backplane and the signal backplane and a plurality of holes for physical connections with the power backplane and the signal backplane.

15. A shelf for a telecommunication, networking, or computing device, the shelf comprising:
a chassis adapted to receive one or more modules; and
a split backplane in the chassis, wherein the split backplane comprises
a power backplane comprising power connectors;
a signal backplane comprising signal connectors, wherein the signal backplane is separate from the power backplane, and wherein the one or more modules are adapted to selectively connect to the power connectors and the signal connectors simultaneously; and
an alignment bar connected between the power backplane and the signal backplane for alignment and stiffening of the power backplane and the signal backplane together for signal integrity and to prevent connector pins from bending or failing between the one or more modules, the power connectors, and the signal connectors;
wherein the signal backplane has N layers and area AN and the power backplane has M layers and area AM and wherein AN×N+AM×M is less than AX×X where a backplane including both the power connectors and the signal connectors has X layers and area AX.

16. The shelf of claim 15 , wherein the signal backplane comprises one or more thin dielectric layers and supports high signaling rates, and wherein the power backplane comprises one or more thick dielectric layers and supports high current distribution.

17. The shelf of claim 15 , wherein a module of the one or more modules comprises module power connectors adapted to connect to the power connectors and module signal connectors adapted to connect to the signal connectors, and wherein the module power connectors and the module signal connectors are each on a circuit board.

Assignees

• Ciena Corp

Inventors

• Shearman Simon J E
• Mayenburg Anthony J

Classifications

• H01R12/72

  coupling with the edge of the rigid printed circuits or like structures · CPC title

• H01R12/722

  coupling devices mounted on the edge of the printed circuits · CPC title

• H01R23/6893

  Electricity · mapped topic

• H05K1/142

  Arrangements of planar printed circuit boards in the same plane, e.g. auxiliary printed circuit insert mounted in a main printed circuit · CPC title

• H05K7/1441 Primary

  with a segmented structure · CPC title