Electromagnetic interference suppressing shield

• US 9,730,366 B2
• Filed: 02/10/2015
• Issued: 08/08/2017
• Est. Priority Date: 02/10/2015
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Elkins, Stephen R., Jaworski, Bradley S., Jacobson, Boris S.
• Primary Examiner(s): Bui, Hung S
• Application Number:
  US14/618,763
• Publication Number:
  US 20160234980A1
• Time in Patent Office: 910 Days
• Field of Search: 361816, 361818
• CPC Class Codes: H05K 9/0045 being rigid plastic containers having a coating of shielding material

Abstract

An electromagnetic interference (EMI) suppressing shield is disclosed. The EMI suppressing shield can include a plurality of shield portions electrically coupled to a positive electric potential polarity or a negative electric potential polarity. At least some of the plurality of shield portions can be electrically isolated from one another. At least one of the plurality of shield portions can be electrically coupled to the positive electric potential and at least one of the plurality of shield portions can be electrically coupled to the negative electric potential.

Claims

1. An electromagnetic interference (EMI) suppressing shield, comprising:

a plurality of shield portions dispose at least partially about a shielded component the plurality of shield portions being electrically coupled to a positive electric potential polarity or a negative electric potential polarity, wherein at least some of the plurality of shield portions are electrically isolated from one another, and

wherein at least one of the plurality of shield portions is electrically coupled to the positive electric potential and at least one of the plurality of shield portions is electrically coupled to the negative electric potential.

2. The shield of claim 1, wherein all of the plurality of shield portions are electrically isolated from one another.

3. The shield of claim 1, wherein the plurality of shield portions are configured as a polyhedron, such that each of the plurality of shield portions comprises at least a portion of a face of the polyhedron.

4. The shield of claim 3, wherein the polyhedron comprises a hexahedron.

5. The shield of claim 3, wherein each of the plurality of shield portions corresponds to a face of the polyhedron.

6. The shield of claim 3, wherein at least two of the plurality of shield portions are associated with a single face of the polyhedron.

7. The shield of claim 6, wherein the at least two of the plurality of shield portions are electrically coupled to electric potentials having the same polarity.

8. The shield of claim 3, wherein a first of the plurality of shield portions is electrically coupled to a positive electric potential polarity and corresponds to a first face of the polyhedron and a second of the plurality of shield portions is electrically coupled to a negative electric potential polarity and corresponds to a second face of the polyhedron, and wherein the first face and the second face are opposite one another.

9. The shield of claim 3, wherein at least two of the plurality of shield portions are electrically coupled to one electric potential polarity and correspond to adjacent faces of the polyhedron.

10. The shield of claim 9, wherein at least two of the plurality of shield portions are electrically coupled to the other electric potential polarity and correspond to adjacent faces of the polyhedron.

11. The shield of claim 1, wherein the plurality of shield portions comprises a primary group of shield portions and a secondary group of shield portions, wherein at least one of the shield portions of the primary group is electrically coupled to the first positive electric potential polarity and at least one of the shield portions of the primary group is electrically coupled to the first negative electric potential polarity, and wherein at least one of the shield portions of the secondary group is electrically coupled to a second positive electric potential polarity and at least one of the shield portions of the secondary group is electrically coupled to a second negative electric potential polarity.

12. The shield of claim 1, wherein each of the positive and negative electric potential polarities comprise a plurality of electric potentials.

13. The shield of claim 1, wherein each of the plurality of shield portions comprises at least one of a conductive material and a semi-conductive material.

14. An electromagnetic interference (EMI) suppressing shield system, comprising:

a first shield having

a plurality of first shield portions dispose at least partially about a shielded component, the plurality of first shield portions being electrically coupled to a positive electric potential polarity or a negative electric potential polarity, wherein at least some of the plurality of first shield portions are electrically isolated from one another, and

wherein at least one of the plurality of first shield portions is electrically coupled to the positive electric potential and at least one of the plurality of first shield portions is electrically coupled to the negative electric potential; and

a second shield electrically coupled to ground.

15. The system of claim 14, wherein all of the plurality of first shield portions are electrically isolated from one another.

16. The system of claim 14, wherein the second shield is disposed about the first shield.

17. The system of claim 14, further comprising a noise source disposed within the first shield.

18. The system of claim 14, wherein the plurality of first shield portions are configured as a polyhedron, such that each of the plurality of first shield portions comprises at least a portion of a face of the polyhedron.

19. The system of claim 14, wherein the plurality of first shield portions comprises a primary group of first shield portions and a secondary group of first shield portions, wherein at least one of the first shield portions of the primary group is electrically coupled to the first positive electric potential polarity and at least one of the first shield portions of the primary group is electrically coupled to the first negative electric potential polarity, and wherein at least one of the first shield portions of the secondary group is electrically coupled to a second positive electric potential polarity and at least one of the first shield portions of the secondary group is electrically coupled to a second negative electric potential polarity.

20. A method of facilitating suppression of electromagnetic interference (EMI), comprising:

providing a plurality of shield portions dispose at least partially about a shielded component the plurality of shield portions being electrically coupled to a positive electric potential polarity or a negative electric potential polarity, wherein at least some of the plurality of shield portions are electrically isolated from one another; and

facilitating electrically coupling at least one of the plurality of shield portions to the positive electric potential and electrically coupling at least one of the plurality of shield portions to the negative electric potential.

21. The method of claim 20, wherein all of the plurality of shield portions are electrically isolated from one another.

22. The method of claim 20, wherein the plurality of first shield portions are configured as a polyhedron, such that each of the plurality of first shield portions comprises at least a portion of a face of the polyhedron.

23. The method of claim 20, wherein the plurality of shield portions comprises a primary group of shield portions and a secondary group of shield portions, wherein at least one of the shield portions of the primary group is electrically coupled to the first positive electric potential polarity and at least one of the shield portions of the primary group is electrically coupled to the first negative electric potential polarity, and wherein at least one of the shield portions of the secondary group is electrically coupled to a second positive electric potential polarity and at least one of the shield portions of the secondary group is electrically coupled to a second negative electric potential polarity.