Transmission line formed of printed self-supporting metallic material

Patent metadata

Field	Value
Publication number	US-9786975-B2
Application number	US-201514817891-A
Country	US
Kind code	B2
Filing date	Aug 4, 2015
Priority date	Aug 4, 2015
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A transmission line is provided and includes a center conductor suspended above a ground plane and comprising a line of printed, self-supporting metallic material, ground walls disposed on either side of the center conductor and comprising stacked lines of printed metallic material and a lid suspended above the center conductor between the ground walls and comprising arrayed lines of the printed, self-supporting metallic material.

First claim

The invention claimed is:

1. A transmission line, comprising:
a center conductor suspended above a ground plane and comprising a line of printed, self-supporting metallic material;
ground walls disposed on either side of the center conductor and comprising stacked lines of printed metallic material; and
a lid suspended above the center conductor between the ground walls and comprising arrayed lines of the printed, self-supporting metallic material.

2. The transmission line according to claim 1 , further comprising a dielectric material disposed about the center conductor.

3. The transmission line according to claim 2 , further comprising a cooling channel defined through the dielectric material.

4. The transmission line according to claim 1 , wherein the center conductor extends between first and second removable supports.

5. The transmission line according to claim 4 , wherein the first and second removable supports comprise a dielectric material.

6. The transmission line according to claim 4 , wherein the first and second removable supports are separated by about 50-100 mils.

7. The transmission line according to claim 1 , wherein the printed, self-supporting material comprises silver.

8. The transmission line according to claim 1 , wherein the line of printed, self-supporting metallic material, the stacked lines and the arrayed lines have elliptical cross-sections.

9. The transmission line according to claim 1 , wherein the ground plane, the ground walls and the lid form a rectangular cross-section.

10. The transmission line according to claim 1 , wherein adjacent ones of the stacked lines form tangential interfaces.

11. The transmission line according to claim 1 , wherein:
the stacked lines of the ground walls are substantially parallel with the center conductor; and
the arrayed lines of the lid are substantially perpendicular with respect to the center conductor.

12. The transmission line according to claim 1 , wherein the center conductor, the first and second ground walls and the lid are configured to form at least one or more of horizontal or vertical directional changes.

13. A transmission line formation method, comprising:
suspending a first line of self-supporting metallic material (SSMM) above a ground plane;
laying first and second lines of grounded metallic material (GMM) along the ground plane on either side of the first line;
forming ground walls by laying additional lines of metallic material (AMM) on the first and second lines of the GMM and on previously laid lines of the AMM; and
forming a lid by suspending second lines of the SSMM above a plane of the first line of the SSMM.

14. The transmission line formation method according to claim 13 , wherein at least one or more of the SSMM, the GMM and the AMM comprise silver.

15. The transmission line formation method according to claim 13 , wherein:
the first and second lines of the GMM and the lines of the AMM extend in parallel with the first line of the SSMM, and
the second lines of the SSMM extend perpendicularly with respect to the first lines of the SSMM.

16. The transmission line formation method according to claim 13 , wherein the second lines of the SSMM extend between respective uppermost lines of the AMM.

17. The transmission line formation method according to claim 13 , wherein the first line of the SSMM extends between first and second removable supports.

18. The transmission line formation method according to claim 13 , further comprising disposing a dielectric material about the first line of the SSMM.

19. A transmission line formation method, comprising:
printing a first line of self-supporting metallic material (SSMM) above a ground plane between first and second removable supports;
printing first and second lines of grounded metallic material (GMM) along the ground plane on either side of the first line of the SSMM;
sequentially forming ground walls by printing lines of additional metallic material (AMM) on the first and second lines of the GMM and on previously printed lines of the AMM in a stacking direction; and
sequentially forming a lid by printing second lines of the SSMM above a plane of the first line of the SSMM between respective uppermost lines of the AMM of the ground walls.

20. The transmission line formation method according to claim 19 , further comprising disposing a dielectric material about the first line of the SSMM.

Assignees

• Raytheon Co

Inventors

• Kocurek Patrick J
• Schlieter Daniel
• Loehrlein Christopher
• Pillans Brandon W
• Pierce Richard G

Classifications

• B22F10/20

  Direct sintering or melting · CPC title

• B22F10/47

  characterised by structural features · CPC title

• B22F10/43

  characterised by material · CPC title

• C22C5/06

  Alloys based on silver · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title