Dual polarization antenna and associated methods

• US 7,358,921 B2
• Filed: 12/01/2005
• Issued: 04/15/2008
• Est. Priority Date: 12/01/2005
• Status: Expired due to Fees

• Current Assignee: North South Holdings Incorporated (Spherix Incorporated)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Snyder, Chris, Gothard, Griffin K., Kralovec, Jay
• Primary Examiner(s): DINH, TRINH VO
• Application Number:
  US11/291,317
• Publication Number:
  US 20070126651A1
• Time in Patent Office: 866 Days
• Field of Search: 343/795, 343/810
• US Class Current: 343/795
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 21/26 Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
• CPC Class Codes: H01Q 9/28 Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence

Abstract

A dual polarization antenna includes a substantially pyramidal configured substrate having opposing walls. An antenna element is carried at each wall such that opposing pairs of antenna elements define respective antenna dipoles and provide dual polarization.

Claims

1. A dual polarization antenna element comprising:

a substantially pyramidal configured substrate having opposing and intersecting walls; and

a monopole element carried at each wall such that opposing pairs of monopole elements define respective antenna dipoles and provide dual polarization, wherein said monopole elements are operative together as a balanced circuit, and further comprising diagonal feed sections defined by intersecting walls, and transmission lines carried by said feed sections and interconnecting each monopole element to form a dipole, and a feed launch formed at each feed section as an extension of the pyramidal substrate as a base configured to be surface mounted to a board.

2. A dual polarization antenna element according to claim 1, wherein each monopole element carried by the respective wall comprises a Molded Interconnect Device (MID).

3. A dual polarization antenna element according to claim 1, wherein said substantially pyramidal substrate comprises a molded material.

4. A dual polarization antenna element according to claim 1, wherein said pyramidal substrate comprises a plastic material that is laser activated in selected areas for metallization, and said monopole elements comprise of metallization applied at the selected areas that have been laser activated.

5. A dual polarization antenna element according to claim 1, wherein said monopole elements comprise metallized antenna structures.

6. A phased array antenna comprising:

a substrate comprising a ground plane and a dielectric layer adjacent thereto; and

a plurality of dual polarization antenna elements carried by the substrate, each comprising

a substantially pyramidal configured substrate having opposing and intersecting walls; and

a monopole element carried at each wall such that opposing pairs of monopoles elements define respective antenna dipoles and provide dual polarization, wherein said monopole elements are operative together as a balanced circuit, and further comprising diagonal feed sections defined by intersecting walls, and transmission lines carried by said feed sections and interconnecting each monopole element to form a dipole, and a feed launch formed at each feed section as an extension of the pyramidal substrate as a base configured to be surface mounted to a board.

7. A phased array antenna according to claim 6, and further comprising an antenna feed network formed in the substrate and interconnecting antenna elements on the substrate.

8. A phased array antenna according to claim 6, wherein each monopole element carried by the respective wall comprises a Molded Interconnect Device (MID).

9. A phased array antenna according to claim 6, wherein said pyramidal substrate of each antenna element comprises a plastic material that is laser activated in selected areas for metallization, and said monopole elements comprise of metallization applied at the laser activated selected areas.

10. A phased array antenna according to claim 6, wherein monopole elements comprise metallized antenna structures.

11. A method of making a dual polarization antenna element, which comprises:

forming a substantially pyramidal configured substrate having opposing and intersecting walls;

forming a monopole element at each wall such that opposing pairs of monopole elements define respective antenna dipoles and provide dual polarization, such that monopole elements are operative together as a balanced circuit;

forming diagonal feed sections at intersecting walls and forming transmission lines at diagonal feed sections as a feed network; and

forming a feed launch at feed sections as a footprint on the pyramidal substrate forming a base and configured for surface mounting to a board.

12. A method according to claim 11, which further comprises forming the pyramidal configured substrate by molding.

13. A method according to claim 11, which further comprises forming the monopole elements at each wall by metallization.

14. A dual polarization antenna element comprising:

a substantially pyramidal configured substrate having opposing and intersecting walls; and

a monopole element carried at each wall such that opposing pairs of monopole elements define respective antenna dipoles and provide dual polarization;

diagonal feed sections defined by intersecting walls;

transmission lines carried by said feed sections and interconnecting each monopole element to forni a dipole; and

a feed launch formed at the feed sections and comprising an extension at an area of the pyramidal substrate forming a base and configured for surface mounting to a board.

15. A phased array antenna comprising:

a substrate comprising a ground plane and a dielectric layer adjacent thereto; and

a plurality of dual polarization antenna elements carried by the substrate, each comprising

a substantially pyramidal configured substrate having opposing and intersecting walls; and

a monopole element carried at each wall such that opposing pairs of monopoles elements define respective antenna dipoles and provide dual polarization, wherein each antenna element includes diagonal feed sections defined by intersecting walls;

transmission lines carried by said feed sections and interconnecting each monopole element to form a dipole; and

a feed launch formed at feed sections and comprising an extension at an area of the pyramidal substrate forming a base and configured for surface mounting to a board.

16. A method of making a dual polarization antenna element, which comprises:

forming a substantially pyramidal configured substrate having opposing walls;

forming a monopole element at each wall such that opposing pairs of monopole elements define respective antenna dipoles and provide dual polarization;

forming diagonal feed sections at intersecting walls;

forming transmission lines at diagonal feed sections as a feed network; and

forming a feed launch at feed sections as a footprint on the pyramidal substrate forming a base and configured for surface mounting to a board.