Advanced antenna integrated printed wiring board with metallic waveguide plate

• US 7,579,997 B2
• Filed: 10/03/2007
• Issued: 08/25/2009
• Est. Priority Date: 10/03/2007
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Navarro, Julio A., Bostwick, Richard N., Helfer, Omer C., Chisa, Mark T.
• Primary Examiner(s): Le; HoangAnh T
• Application Number:
  US11/866,556
• Publication Number:
  US 20090091506A1
• Time in Patent Office: 692 Days
• Field of Search: 343/700.MS, 343/772, 343/776, 343/786
• US Class Current: 343/776
• CPC Class Codes: H01Q 13/06 Waveguide mouths horns H01Q13/02
• CPC Class Codes: H01Q 21/064 using horn or slot aerials slotted waveguides arrays H01Q21/005

Abstract

A system and method of constructing a phased array antenna system that incorporates a printed wiring board assembly with a metallic waveguide plate is provided. The system uses a metallic waveguide plate to dissipate heat toward and through the waveguide portion of the system.

Claims

1. A phased array antenna system, comprising:

a multi-layer printed wiring board assembly;

at least one probe integrated with the multi-layer printed wiring board assembly;

at least one electronic device integrated with the multi-layer printed wiring board assembly;

a metallic waveguide plate positioned adjacent to the multi-layer printed wiring board assembly such that heat generated by the at least one electronic device dissipates to the metallic waveguide plate; and

at least one waveguide formed within the metallic waveguide plate, wherein at least a portion of the at least one probe is disposed within the at least one waveguide of the metallic waveguide plate; and

dielectric material filling the at least one waveguide around the entire portion of the at least one probe disposed within the at least one waveguide of the metallic waveguide plate, wherein the dielectric material forms a dielectric barrier between the at least one probe and the metallic waveguide plate.

2. The system of claim 1 wherein the at least one waveguide and the at least one probe form an antenna element.

3. The system of claim 2 wherein the at least one waveguide is cylindrical and further comprises an upper portion and a lower portion, wherein the upper portion is of a greater diameter than the lower portion.

4. The system of claim 3 wherein the upper portion depth and diameter of the at least one waveguide corresponds to a desired operating frequency of the antenna element.

5. The system of claim 1 further comprising:

a metallic pedestal integrated into the printed wiring board and positioned adjacent to the metallic waveguide plate such that heat generated by the at least one electronic device dissipates to the metallic waveguide plate through the metallic pedestal.

6. The system of claim 1 wherein the metallic waveguide plate is constructed of copper.

7. The system of claim 1 wherein walls of the at least one waveguide are contiguous.

8. A method of constructing a phased array antenna system, comprising:

forming at least one waveguide within a metallic waveguide plate;

positioning the metallic waveguide plate adjacent to a multi-layer printed wiring board assembly, wherein the multi-layer printed wiring board assembly has at least one electronic device integrated therein;

filling the at least one waveguide within the metallic waveguide plate with dielectric material;

drilling at least one channel through the dielectric material filling the at least one waveguide within the metallic waveguide plate;

disposing at least one probe into the at least one channel so that the at least one waveguide within the metallic waveguide plate is filled with the at least one probe and the dielectric material surrounding the at least one probe to form a dielectric barrier between the at least one probe and the metallic waveguide plate; and

dissipating heat from the at least one electronic device through the metallic waveguide plate.

9. The method of claim 8 further comprising forming an upper portion and a lower portion in the at least one waveguide, wherein walls of the upper portion and lower portion are contiguous.

10. The method of claim 9 further comprising forming the upper portion depth and diameter to correspond to a desired operating frequency.

11. The method of claim 8 wherein the step of filling the at least one waveguide within the metallic waveguide plate with dielectric material is accomplished by injection molding.

12. The method of claim 8 wherein the step of disposing the at least one probe into the at least one channel further comprises integrating the at least one probe with the multi-layer printed wiring board assembly.

13. The method of claim 12 wherein the step of disposing the at least one probe into the at least one channel is accomplished by plating.

14. The method of claim 12 wherein the step of disposing the at least one probe into the at least one channel is accomplished by inserting at least one prefabricated probe into the at least one channel.

15. The method of claim 8 wherein the multi-layer printed wiring board assembly has at least one metallic pedestal integrated therein, and the step of dissipating heat from the at least one electronic device through the metallic waveguide plate is done by dissipating heat through the metallic pedestal to and through the metallic waveguide plate.

16. The method of claim 8 wherein the metallic waveguide plate is formed by casting.

17. The method of claim 8 further comprising the step of securing the metallic waveguide plate to be in abutting contact with the multi-layer printed wiring board assembly by at least one of fastening, gluing, soldering, and laminating.