Deployable antenna array and method for deploying antenna array

• US 9,735,474 B2
• Filed: 07/19/2011
• Issued: 08/15/2017
• Est. Priority Date: 07/21/2010
• Status: Active Grant

• Current Assignee: ELTA Systems Limited (Government of Israel)
• Original Assignee: ELTA Systems Limited (Government of Israel)
• Inventors: Shmuel, Amir
• Primary Examiner(s): Levi, Dameon E
• Assistant Examiner(s): Davis, Walter
• Application Number:
  US13/810,517
• Publication Number:
  US 20130169505A1
• Time in Patent Office: 2,219 Days
• Field of Search: 343815, 343915, 343700 MS, 343838, 343848
• CPC Class Codes: H01Q 1/088 Quick-releasable antenna elements
• CPC Class Codes: H01Q 1/1235 Collapsible supports; Means for erecting a rigid antenna
• CPC Class Codes: H01Q 21/00 Antenna arrays or systems arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00
• CPC Class Codes: H01Q 21/062 using dipole aerials; H01Q21/067, H01Q21/068 take precedence
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407

Abstract

A deployable antenna array is provided having at least one boresight axis, and including a first plurality of first antenna array elements and a second plurality of second antenna array elements separate from the first plurality of first antenna array elements, the antenna array being configured for being selectively deployable at least from a stowed configuration to a deployed configuration. A radar system including an antenna array, a telecommunication system including an antenna array, and a method for deploying an antenna array are also provided.

Claims

1. A deployable antenna array having at least one boresight axis, comprising:

a first plurality of first antenna array elements, each said first antenna array element comprising antenna radiator elements and supporting/conditioning circuitry;

a second plurality of second antenna array elements separate from first plurality of first antenna array elements, each said second antenna array element being configured as a ground plane for, and being associated with, at least one respective said first antenna array element, said second antenna array elements being devoid of any electrical feedlines, electronic components, or electrical components that are in electrical communication with any electronic or electrical components of adjacent first antenna array elements;

wherein said antenna array is configured for being selectively deployable at least from a stowed configuration to a deployed configuration, wherein a relative spatial relationship between said first antenna array elements and said second antenna array elements is changed between said stowed configuration and said deployed configuration;

wherein said antenna radiator elements and supporting/conditioning circuitry of each said first antenna array element are configured, in operation of the antenna array with said antenna array in said deployed configuration, for at least one of radiating and receiving RF energy in a direction parallel to said at least one boresight axis in cooperation with a respective said ground plane provided by at least one respective said second antenna array element;

each said first antenna array element being of general planar construction in the form of a substantially rigid first panel, and each said second antenna array element being of general planar construction in the form of a substantially rigid second panel; and

each said panel pivotably mounted to a respective adjacent pair of said first panels, each said second panel having a first lateral end pivotably mounted to one said first panel of said respective adjacent pair of said first panels, and a second lateral end pivotably mounted to the other said first panel of said respective adjacent pair of said first panels.

2. The antenna array according to claim 1, wherein:

said first antenna array elements are generally aligned with said at least one boresight axis at least in said deployed configuration;

said second antenna array elements are pivotably connected to said first antenna array elements for enabling said antenna array to be selectively deployed at least from said stowed configuration to said deployed configuration, wherein said relative spatial relationship between said first antenna array elements and said second antenna array elements is changed between said stowed configuration and said deployed configuration by relative pivoting therebetween; and

the antenna array has an absence of electrical conductors configured for providing electrical communication between said second antenna array elements and said antenna radiator elements and supporting/conditioning circuitry.

3. The antenna array according to claim 1, wherein:

said first antenna array elements are in lateral spaced adjacent relationship and configured for being generally aligned with said boresight axis at least in said deployed configuration;

each said second antenna array element configured for pivoting with respect to the respective adjacent pair of said first antenna array elements between said stowed configuration and said deployed configuration, to provide a first spacing therebetween in said stowed configuration and a second spacing, greater than said first spacing, in said deployed configuration; and

in said stowed configuration, said first array elements of each said adjacent pair are in staggered parallel relationship.

6. The antenna array according to claim 1, wherein:

in said deployed configuration, said first antenna array elements and said second antenna array elements are in a first said relative spatial relationship, wherein said first antenna array elements of each adjacent pair thereof are laterally spaced from one another by a first spacing and comprise a respective said second antenna array element therebetween in general non-parallel first spatial relationship therewith; and

wherein

in said stowed configuration said first antenna array elements and said second antenna array elements are in a second said relative spatial relationship, wherein said second spatial relationship is different from said first spatial relationship and configured for enabling said stowed configuration to be more compact than said deployed configuration.

7. The antenna array according to claim 1, wherein each said first antenna array element comprises a first portion comprising the respective said antenna radiator elements thereof, and wherein said first portion projects outwardly with respect to a respective second antenna array element adjacent thereto.

8. The antenna array according to claim 1, wherein each said second antenna array element comprises a forward facing face defining the respective said ground plane thereof and having a metallic surface, or wherein at least one said second antenna array element is made from a metal.

9. The antenna array according to claim 1, wherein at least one said second antenna array element comprises at least one through hole or wherein at least a portion of at least one said second antenna array element is formed as a net structure.

10. The antenna array according to claim 1, wherein said first spacing is substantially equal to half the minimum operating wavelength of the antenna array.

11. The antenna array according to claim 1, wherein at least one said first antenna array element comprises a plurality of said antenna radiator elements, spaced from one another on the respective said first antenna array element by a third spacing, wherein said third spacing is equal to about half the operating wavelength of the antenna array.

12. The antenna array according to claim 1, wherein at least one said first antenna array element is in the form of a substantially flat plate.

13. The antenna array according to claim 1, wherein at least one said second antenna array element is in the form of a substantially flat plate.

14. The antenna array according to claim 1, wherein in said deployed configuration at least one said second antenna array element is in mechanically spatially fixed relationship in between two said first antenna array elements adjacent thereto.

15. The antenna array according to claim 1, wherein:

said second antenna array elements are configured having an absence of at least one of

said supporting/conditioning circuitry;

said supporting/conditioning circuitry operatively connected to said antenna radiator elements of an adjacent said first antenna array element;

electronic components in electrical communication with at least one of said antenna radiator elements and supporting circuitry of an adjacent said first antenna array element.

16. The antenna array according to claim 1, wherein at least two adjacent said first antenna array elements are in spaced parallel relationship in said deployed configuration, and wherein a respective said second antenna array element is connected therebetween in non-parallel relationship with respect thereto in said deployed configuration.

17. The antenna array according to claim 1, wherein at least two adjacent said first antenna array elements are in spaced parallel relationship in said deployed configuration, and wherein a respective said second antenna array element is connected therebetween in orthogonal relationship with respect thereto in said deployed configuration.

18. The antenna array according to claim 1, wherein at least two adjacent said first antenna array elements are in one of spaced diverging relationship and spaced converging relationship in said deployed configuration, and wherein a respective said second antenna array element is connected therebetween in non-parallel relationship with respect thereto in said deployed configuration.

19. The antenna array according to claim 1, wherein said second antenna array elements have a geometrical form that remains substantially undistorted at least during deployment of said antenna array between said stowed configuration and said deployed configuration.

20. The antenna array according to claim 1, wherein said second antenna array elements are configured to behave as substantially rigid bodies when said antenna array is deployed from said stowed configuration and said deployed configuration.

21. The antenna array according to claim 1 wherein in said second spatial relationship, said first antenna array elements of each adjacent pair thereof are laterally spaced from one another by a second spacing, wherein said second spacing is smaller than said first spacing.

22. The antenna array according to claim 1, wherein said first spacing is correlated with a first geometric dimension of said second antenna array elements, and wherein optionally said first spacing is correlated with said first geometric dimension of said second antenna array elements, and wherein said second spacing is correlated with a second geometric dimension of said second antenna array elements, wherein said second geometric dimension of said second antenna array elements is a width dimension.

23. The antenna array according to claim 1, wherein at least one said second antenna array element is pivotably mounted to two said first antenna array elements adjacent thereto, wherein said antenna array is deployed from said stowed configuration to said deployed configuration by relative pivoting of the at least one said second antenna array element with respect to the respective two said first antenna array elements adjacent thereto from said stowed configuration, wherein said at least one said second antenna array element is in substantially parallel relationship in between said respective two said first antenna array elements adjacent thereto, and said deployed configuration wherein said at least one said second antenna array element is in substantially non-parallel relationship in between said respective two said first antenna array elements adjacent thereto.

24. The antenna array according to claim 1, wherein at least one said second antenna array element is engageably mountable to two said first antenna array elements adjacent thereto, wherein said antenna array is deployed from said stowed configuration to said deployed configuration by engaging the at least one said second antenna array element with respect to the respective two said first antenna array elements adjacent thereto in said deployed configuration wherein said at least one said second antenna array element is in substantially non-parallel relationship in between said respective two said first antenna array elements adjacent thereto.

25. A radar system, comprising the antenna array as defined in claim 1.

26. A telecommunications system, comprising the antenna array as defined in claim 1.

27. Method for deploying an antenna array, comprising

providing an antenna array as defined in claim 1;

selectively deploying said antenna array from said stowed configuration to said deployed configuration by changing said relative spatial relationship between said first antenna array elements and said second antenna array elements.

28. The antenna array according to claim 1, wherein each said second antenna array element is pivotably mounted to a respective adjacent pair of said first antenna array elements about respective pivoting axes which are non-parallel with respect to said boresight axis.

29. The antenna array according to claim 1, wherein each said second antenna array element is pivotably mounted to a respective adjacent pair of said first antenna array elements about respective pivoting axes, wherein said pivoting axes are orthogonal with respect to said boresight axis.

30. The antenna array according to claim 1, further comprising an aft support structure comprising at least one primary support element configured for being joined to said first antenna array elements of at least one respective adjacent pair thereof in general non-parallel spatial relationship therewith in said deployed configuration.

31. The antenna array according to claim 30, wherein said at least one primary support element configured for being joined to said first antenna array elements of at least one respective adjacent pair thereof in aft spaced relationship with respect to a said second antenna array element that is also joined to the same said adjacent pair of said first antenna array elements.

32. The antenna array according to claim 30 wherein at least one said second antenna array element and a respective said at least one primary support element are each pivotably mounted to each of two said first antenna array elements adjacent thereto, wherein said antenna array is deployed from said stowed configuration to said deployed configuration by relative pivoting of said pivotably mounted second antenna array element and said pivotably mounted primary support element with respect to the respective two said first antenna array elements adjacent thereto from said stowed configuration, wherein said pivotably mounted second antenna array element and said pivotably mounted primary support element are each in substantially parallel relationship in between said respective two said first antenna array elements adjacent thereto, and said deployed configuration wherein said pivotably mounted second antenna array element and said pivotably mounted primary support element are in substantially non-parallel relationship in between said respective two said first antenna array elements adjacent thereto.

33. The antenna array according to claim 32, wherein in said deployed configuration said pivotably mounted second antenna array element and said pivotably mounted primary support element are each in substantially orthogonal relationship in between said respective two said first antenna array elements adjacent thereto.

34. The antenna array according to claim 30, wherein in said deployed configuration, at least one said second antenna array element and at least one primary support element are connected in between two said first antenna array elements adjacent thereto to form a parallelepiped structure, and wherein optionally said parallelepiped structure comprises a cuboid structure.

35. The antenna array according to claim 30, further comprising an auxiliary support structure comprising at least one secondary support element configured for being affixed to at least one adjacent pair of said first antenna array elements in substantially orthogonal relationship therewith in said deployed configuration.

36. The antenna array according to claim 35, wherein said at least one secondary support element is in substantially orthogonal relationship with respect to at least one said second antenna array element in said deployed configuration.

37. The antenna array according to claim 35, wherein said at least one secondary support element is pivotably mounted to a respective first antenna array element adjacent thereto and pivotably movable between a first position in said stowed configuration, wherein said pivotably mounted secondary support element is in parallel relationship with said adjacent first antenna array element, and a second position in said deployed configuration, wherein said pivotably mounted secondary support element in orthogonal relationship with said adjacent first antenna array element.

38. The antenna array according to claim 35, wherein in said deployed configuration, at least one said second antenna array element and at least one primary support element and at least two said secondary support element are connected to two said first antenna array elements adjacent thereto to form a closed box structure.

39. The antenna array according to claim 35, wherein at least one said secondary support element comprises at least one planar antenna element.

4. A deployable antenna array having at least one boresight axis and configured for being selectively deployable at least from a stowed configuration to a deployed configuration, comprising:

a first plurality of first antenna array elements, each said first antenna array element supporting/conditioning circuitry, wherein said first antenna array elements are generally aligned with said at least one boresight axis at least in said deployed configuration;

a second plurality of second antenna array elements separate from said first plurality of first antenna array elements;

each said first antenna array element being of general planar construction in the form of a substantially rigid first panel, and each said second antenna array element being of general planar construction in the form of a substantially rigid second panel;

wherein said second antenna array elements are pivotably connected to said first antenna array elements for enabling said antenna array to be selectively deployed at least from said stowed configuration to said deployed configuration, wherein a relative spatial relationship between said first antenna array elements and said second antenna array elements is changed between said stowed configuration and said deployed configuration by relative pivoting therebetween;

each said second antenna array element being pivotably connected to a respective adjacent pair of said first antenna array elements, each said second antenna array element having a first lateral end pivotably mounted to one said first antenna array element of said respective adjacent pair of said first antenna array elements, and a second lateral end pivotably mounted to the other said first antenna array element of said respective adjacent pair of said first antenna array elements;

wherein said second plurality of second antenna array elements serving as ground planes for the first plurality of first antenna array elements, said second antenna array elements excluding being devoid of any electrical feedlines, electronic components, or electrical components that are in electrical communication with any electronic or electrical components of the first antenna array elements.

5. A deployable antenna array having at least one boresight axis and configured for being selectively deployable at least from a stowed configuration to a deployed configuration, comprising:

a first plurality of first antenna array elements, and a second plurality of second antenna array elements separate from first plurality of first antenna array elements,

wherein said first antenna array elements are in lateral spaced adjacent relationship and configured for being generally aligned with said boresight axis at least in said deployed configuration,

each said first antenna array element being of general planar construction in the form of a substantially rigid first panel, and each said second antenna array element being of general planar construction in the form of a substantially rigid second panel;

wherein each said second antenna array element is pivotably mounted to a respective adjacent pair of said first antenna array elements, each said second antenna array element having a first lateral end pivotably mounted to one said first antenna array element of said respective adjacent pair of said first antenna array elements, and a second lateral end pivotably mounted to the other said first antenna array element of said respective adjacent pair of said first antenna array elements;

and each said second antenna array elements being configured for pivoting with respect to the respective adjacent pair of said first antenna array elements between said stowed configuration and said deployed configuration, to provide a first spacing therebetween in said stowed configuration and a second spacing, greater than said first spacing, in said deployed configuration;

wherein said second plurality of second antenna array elements serve as ground planes for the first plurality of first antenna array elements, said second antenna array elements being devoid of any electrical feedlines, electronic components, or electrical components that are in electrical communication with any electronic or electrical components of the first antenna array elements; and

wherein in said stowed configuration, said first array elements of each said adjacent pair are in staggered parallel relationship.