Lightweight active phased array antenna

• US 7,129,908 B2
• Filed: 06/08/2004
• Issued: 10/31/2006
• Est. Priority Date: 06/08/2004
• Status: Active Grant

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Johnson, George A., Turner, Earl L., Edward, Brian J.
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): Ho, Binh van
• Application Number:
  US10/863,028
• Publication Number:
  US 20050270250A1
• Time in Patent Office: 875 Days
• Field of Search: 343/878
• US Class Current: 343/878
• CPC Class Codes: H01Q 1/02 Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 21/0087 Apparatus or processes specially adapted for manufacturing antenna arrays manufacturing waveguides H01P11/00
• CPC Class Codes: H01Q 21/061 Two dimensional planar arrays

Abstract

A lightweight active phased array antenna including modular active electronics assemblies and passive radiating element aperture panels that are integrated into a lightweight support structure of a minimum depth which provides a cooling system for the electronics assemblies. The electronics assemblies and aperture panels are fully accessible from one or both faces of the antenna and can be readily removed/replaced as required.

Claims

1. A lightweight support structure for mounting components of an active phased array antenna, the support structure comprising:

a frame;

at least two duct-like cross members secured by the frame; and

at least one column member cooperating with the frame and the at least two duct-like cross members to define an array of bays for mounting the components of an active phased array antenna;

wherein the at least two duct-like cross members are for distributing a coolant to and from the components of the active phased array antenna.

2. The support structure according to claim 1, wherein the frame comprises a perimeter frame.

3. The support structure according to claim 2, wherein the perimeter frame comprises a plurality of frame members.

4. The support structure according to claim 1, further comprising at least one fan for moving the coolant through the at least two duct-like members.

5. The support structure according to claim 1, wherein the at least two duct-like cross members are stacked on top of one another.

6. The support structure according to claim 1, wherein at least one of the frame, the at least two duct-like members, and the at least one column member is fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

7. The support structure according to claim 1, wherein each of the frame, the at least two duct-like members, and the at least one column member is fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

8. The support structure according to claim 1, wherein at least one of the frame and the at least two duct-like members is fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

9. The support structure according to claim 1, wherein the frame and the at least two duct-like members are fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

10. A lightweight active phased array antenna comprising:

a support structure having at least two duct-like cross-members;

at least one electronics assembly disposed in the support structure; and

at least one passive radiating element aperture panel disposed in the support structure,

wherein the at least two duct-like members distribute a coolant to and from the components of the active phased array antenna, and the support structure further comprises at least one column member cooperating with the at least two duct-like cross members to define at least one bay for mounting the at least one electronic assembly.

11. The antenna according to claim 10, wherein the support structure further includes a frame for securing the at least two duct-like cross members.

12. The antenna according to claim 11, wherein the frame comprises a perimeter frame.

13. The antenna according to claim 12, wherein the perimeter frame comprises a plurality of frame members.

14. The antenna according to claim 10, wherein the support structure further comprises at least one fan for moving the coolant through the at least two duct-like members.

15. The antenna according to claim 10, wherein the at least one bay mounting the at least one electronic assembly is disposed on a side of the support structure so as to define a single-face array antenna.

16. The antenna according to claim 10, wherein the at least one bay mounting the at least one electronic assembly comprises at least two bays and at least two electronics assemblies, the at least two bays respectively mounting the at least two electronic assemblies are disposed on opposite sides of the support structure so as to define as dual-face array antenna.

17. The antenna according to claim 10, wherein the at least two duct-like cross members are stacked on top of one another.

18. The antenna according to claim 10, wherein the support structure further includes a frame for securing the at least two duct-like cross members.

19. The antenna according to claim 18, wherein at least one of the frame, the at least two duct-like members, and the at least one column member is fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

20. The antenna according to claim 18, wherein each of the frame, the at least two duct-like members, and the at least one column member is fabricated from a material selected from a group consisting of carbon-epoxy composites and low mass density metal alloys.

21. The antenna according to claim 11, wherein at least one of the frame and the at least two duct-like members is fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

22. The antenna according to claim 11, wherein each of the frame and the at least two duct-like members is fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

23. The antenna according to claim 10, wherein the at least two duct-like members are fabricated from a material selected from the group consisting of carbon-epoxy composites and low mass density metal alloys.

24. The antenna according to claim 10, wherein at least one electronics assembly is readily accessible from a face of the antenna.

25. The antenna according to claim 10, wherein at least one electronics assembly includes a DC power converter.

26. The antenna according to claim 25, wherein the DC power converter includes a heat exchanger in communication with the at least two duct-like members, the coolant distributed by the at least two duct-like members passing through the heat exchanger.

27. The antenna according to claim 10, wherein the at least one electronics assembly includes a transmit/receive electronics.

28. The antenna according to claim 27, wherein the transmit/receive electronics includes a heat exchanger in communication with the at least two duct-like cross members, the coolant distributed by the at least two duct-like members passing through the heat exchanger.

29. The antenna according to claim 10, wherein the at least one electronics assembly includes a heat exchanger in communication with the at least two duct-like cross-members, the coolant distributed by the at least two duct-like members passing through the heat exchanger.

30. The antenna according to claim 10, further comprising a bus network for power, RF signals, and control signals, the bus network routed within the at least one column member.