Granted Patent B2

US 7,583,489 · App. 11/468,708 · Granted Sep 1, 2009

Abstract

Claims (34)

1. A shorting stub for connection between an inner conductor and an outer conductor of a coaxial cable, comprising:

a tungsten or tungsten alloy shorting stub having a connecting portion between an inner conductor connection and an outer conductor connection;

the connecting portion provided with at least two loop segments;

each of the loop segments arranged in a separate, parallel plane;

each of the separate planes aligned parallel to one another and normal to a longitudinal axis of the inner conductor;

each of the loop segments interconnected with at least one other loop segment by a transition section.

2. The shorting stub of claim 1 , wherein the connecting portion is formed coaxial around a longitudinal axis parallel to the inner conductor.

3. A method for manufacturing a shorting stub for connection between an inner conductor and an outer conductor of a coaxial cable, comprising the steps of:

forming a tungsten or tungsten alloy shorting stub by metal injection molding; the shorting stub provided with a connecting portion between an inner conductor connection and an outer conductor connection;

the connecting portion provided with at least two loop segments;

each of the loop segments arranged in a separate, parallel plane;

each of the separate planes aligned parallel to one another and normal to a longitudinal axis of the inner conductor;

each of the loop segments interconnected with at least one other loop segment by a transition section; and

sintering the shorting stub.

4. The method of claim 3 , wherein the the loop segments are supported during the metal injection molding by at least one support.

5. The method of claim 4 , further including the step of removing the at least one support after sintering the shorting stub.

6. The method of claim 4 , wherein the at least one support has a longitudinal axis parallel to the inner conductor.

7. The method of claim 4 , wherein the at least one support is coupled to the loop segments by a frangible connection.

8. The method of claim 4 , wherein the at least one support is coupled to the loop segments along an inner surface.

9. The method of claim 4 , wherein the at least one support is coupled to the loop segments along an outer surface.

10. The method of claim 4 , wherein the at least one support is a unitary support band.

11. The method of claim 4 , wherein the at least one support is at least one post between the loop segments.

12. A method for manufacturing a shorting stub for connection between an inner conductor and an outer conductor of a coaxial cable, comprising the steps of:

forming a green part tungsten or tungsten alloy shorting stub by metal injection molding;

the green part tungsten or tungsten alloy shorting stub having a connecting portion between an inner conductor connection and an outer conductor connection;

the connecting portion having multiple loop segments, each of the loop segments arranged in a separate, parallel plane;

each of the separate planes aligned parallel to one another and normal to a longitudinal axis of the inner conductor;

each of the loop segments interconnected with at least one other loop segment by a transition section;

the loop segments supported during the metal injection molding by at least one support;

debinding and sintering the green part tungsten or tungsten alloy shorting stub; and

removing the at least one support.

13. The method of claim 12 , wherein the at least one support is removed by breaking a frangible connection between the at least one support and the loop segments.

14. The method of claim 12 , wherein the green part tungsten or tungsten alloy shorting stub is de-binded from a polymer via application of nitric acid.

15. The method of claim 12 , wherein the green part tungsten or tungsten alloy shorting stub is formed in two pieces, the two pieces stacked together prior to the sintering step.

Assignments (21)