Configurable antenna assembly

• US 9,647,331 B2
• Filed: 04/15/2014
• Issued: 05/09/2017
• Est. Priority Date: 04/15/2014
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Manry, Jr., Charles W., Black, Eric J.
• Primary Examiner(s): Gregory, Bernarr
• Application Number:
  US14/253,218
• Publication Number:
  US 20150295309A1
• Time in Patent Office: 1,120 Days
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 15/0066 said selective devices being reconfigurable, tunable or controllable, e.g. using switches
• CPC Class Codes: H01Q 3/247 by switching different parts of a primary active element
• CPC Class Codes: H01Q 9/0442 with particular tuning means

Abstract

An antenna assembly may include a first ground plane, a second ground plane that may be switched between grounding and non-grounding states, and first and second antenna layers. Each of the first and second antenna layers may include a plurality of pixels interconnected by a plurality of phase change material (PCM) switches. The PCM switches are configured to be selectively switched between phases to provide a plurality of antenna patterns within the first and second antenna layers.

Claims

1. An antenna assembly, comprising:

a first ground plane;

a second ground plane that is configured to be switched between grounding and non-grounding states; and

first and second antenna layers, wherein each of the first and second antenna layers includes a plurality of first phase change material (PCM) switches, and wherein the plurality of first PCM switches are configured to be selectively switched to provide a plurality of antenna patterns within the first and second antenna layers.

2. The antenna assembly of claim 1, wherein the plurality of first PCM switches are configured to be selectively switched to provide multiple antenna personalities.

3. The antenna assembly of claim 1, wherein the second ground plane includes a plurality of plates interconnected by a plurality of second PCM switches, and wherein the plurality of second PCM switches are selectively activated and deactivated to switch the second ground plane between the grounding and non-grounding states.

4. The antenna assembly of claim 1, further comprising a plurality of control lines that connect the first ground plane to the second ground plane and the first and second antenna layers.

5. The antenna assembly of claim 4, wherein the plurality of first PCM switches connect to the plurality of control lines.

6. The antenna assembly of claim 1, further comprising a feed post mounted to the first ground plane, wherein the second ground plane secures to a portion of the feed post.

7. The antenna assembly of claim 6, wherein the feed post comprises one or more conductors that connect to the first and second antenna layers.

8. The antenna assembly of claim 1, further comprising:

a first control grid connected to the first antenna layer; and

a second control grid connected to the second antenna layer,

wherein each of the first and second control grids comprises a first set of traces that intersect with a second set of traces at a plurality of intersections that operatively connect to a respective one of the plurality of first PCM switches, and wherein each of the plurality of intersections is configured to be energized to switch each of the plurality of first PCM switches between phases.

9. The antenna assembly of claim 8, wherein the first and second control grids are configured to be frequency selective.

10. The antenna assembly of claim 8, wherein each of the first and second control grids further comprises one or more inductors inserted at sub-wavelength intervals.

11. The antenna assembly of claim 1, wherein each of the plurality of first PCM switches is formed of Germanium Tellurium (GeTe) having first and second phases, wherein one of the first and second phases is electrically conductive, and the other of the first and second phases is non-conductive.

12. An antenna assembly, comprising:

an antenna array including at least one antenna layer, wherein the at least one antenna layer includes a plurality of first phase change material (PCM) switches, and wherein the plurality of first PCM switches are configured to be selectively switched to provide a plurality of antenna patterns within the antenna array to provide multiple antenna personalities; and

at least one control grid connected to the at least one antenna layer, wherein the control grid comprises a first set of traces that intersect with a second set of traces at a plurality of intersections that operatively connect to a respective one of the plurality of first PCM switches, and wherein each of the plurality of intersections is configured to be energized to switch each of the plurality of first PCM switches between phases.

13. The antenna assembly of claim 12, wherein the at least one antenna layer includes at least two antenna layers.

14. The antenna assembly of claim 12, further comprising a switched ground plane that is configured to be switched between grounding and non-grounding states.

15. The antenna assembly of claim 14, wherein the switched ground plane includes a plurality of plates interconnected by a plurality of second PCM switches, and wherein the plurality of second PCM switches are selectively activated and deactivated to switch the second plane between the grounding and non-grounding states.

16. The antenna assembly of claim 12, further comprising a plurality of control lines that connect to the antenna array.

17. The antenna assembly of claim 12, wherein the control grid is configured to be frequency selective, and further comprises one or more inductors inserted at sub-wavelength intervals.

18. The antenna assembly of claim 12, wherein each of the plurality of first PCM switches is formed of Germanium Tellurium (GeTe) having first and second phases, wherein one of the first and second phases is electrically conductive, and the other of the first and second phases is non-conductive.

19. An antenna unit-cell phased array assembly, comprising:

a first ground plane;

a second ground plane that is configured to be switched between grounding and non-grounding states, wherein the second ground plane includes a plurality of plates interconnected by a plurality of first phase change material (PCM) switches, and wherein the plurality of first PCM switches are selectively activated and deactivated to switch the second ground plane between the grounding and non-grounding states;

an antenna array comprising first and second antenna layers, wherein each of the first and second antenna layers includes a plurality of second PCM switches, and wherein the plurality of second PCM switches are configured to be selectively switched between first and second phases to provide a plurality of antenna patterns within the first and second antenna layers to provide multiple antenna personalities, wherein one of the first and second phases is electrically conductive, and the other of the first and second phases is non-conductive;

first and second control grids connected to the first and second antenna layers, respectively, wherein each of the first and second control grids comprises a first set of traces that intersect with a second set of traces at a plurality of intersections that operatively connect to a respective one of the plurality of second PCM switches, wherein each of the plurality of intersections is configured to be energized to switch each of the plurality of second PCM switches, wherein the first and second control grids are configured to be frequency selective, and wherein each of the first and second control grids further comprises one or more inductors inserted at sub-wavelength intervals;

a feed post mounted to the first ground plane, wherein the second ground plane secures to a portion of the feed post, wherein the feed post comprises one or more conductors that connect to the first and second antenna layers; and

a plurality of control lines that connect the first ground plane to the second ground plane and the antenna array, wherein the plurality of first and PCM switches connect to the plurality of control lines.