Antenna feeding network

• US 9,761,949 B2
• Filed: 01/28/2013
• Issued: 09/12/2017
• Est. Priority Date: 04/15/2004
• Status: Active Grant

• Current Assignee: CellMax Technologies AB (Rosenberger Technology (Kunshan) Co., Ltd.)
• Original Assignee: CellMax Technologies AB (Rosenberger Technology (Kunshan) Co., Ltd.)
• Inventors: Lenart, Greger, Malmgren, Jens
• Primary Examiner(s): Levi, Dameon E
• Assistant Examiner(s): Hu, Jennifer F
• Application Number:
  US13/751,445
• Publication Number:
  US 20130135166A1
• Time in Patent Office: 1,688 Days
• Field of Search: 343830, 333237
• CPC Class Codes: H01P 3/06 Coaxial lines
• CPC Class Codes: H01P 3/10 Wire waveguides, i.e. with a single solid longitudinal conductor
• CPC Class Codes: H01Q 19/108 Combination of a dipole with a plane reflecting surface H01Q19/106 takes precedence; strip line H01Q9/065
• CPC Class Codes: H01Q 21/0006 Particular feeding systems
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence

Abstract

An antenna feeding network, including at least one antenna feeding line, each antenna feeding line comprising a coaxial line having a central inner conductor and a surrounding outer conductor. The outer conductor (4) is made of an elongated tubular compartment (5) having an elongated opening (6) along one side of the compartment (5), and that the inner conductor (3) is suspended within the tubular compartment (5) by means of dielectric support means (7).

Claims

1. An antenna comprising:

at least one dipole; and

at least one antenna reflector having;

a plurality of at least three coaxial lines formed as elongated tubular compartments having rectilinear cross-sections, each compartment adjacent to at least one other compartment and having;

an outer conductor having

a top structure,

a bottom structure opposite to the top structure, the bottom structure having an elongated opening, and

walls essentially perpendicular to the top structure and the bottom structure, the walls connecting the top structure to the bottom structure, where at least one wall is common for two adjacent outer conductors; and

an inner conductor suspended in the compartment whereby the outer conductor and the inner conductor of each compartment thus form a coaxial line.

2. The antenna of claim 1, wherein the elongated tubular compartment (5) is of square cross-section.

3. The antenna of claim 1, wherein the elongated tubular compartment (5) is of rectangular shape in cross-section.

4. The antenna of claim 1, wherein the inner conductor (3) has a varying cross-section.

5. The antenna of claim 4, wherein the inner conductor has a circular cross-section of varying diameter.

6. The antenna of claim 1, wherein the inner conductors (3) of adjacent compartments (5) are connectable to each other by a cross-over element (8) inserted through an opening in the common wall between the adjacent compartments (5).

7. The antenna of claim 6, wherein the compartments (5) at the cross-over element (8) are covered by a conductive cover (9).

8. The antenna of claim 7, wherein the conductive cover (9) is connected to the outer conductor (4).

9. The antenna of claim 1, wherein the tubular compartments (5) of the plurality of coaxial lines (2) and the reflector (10) form a self-supporting framework.

10. The antenna of claim 1 wherein said plurality of coaxial lines comprises at least three coaxial lines.

11. The antenna of claim 1 wherein said plurality of coaxial lines comprises eight coaxial lines.

12. The antenna of claim 1 wherein the top structure of each compartment has a first side on the inside of the compartment and has a second side on the outside of the compartment;

wherein said at least one dipole is mounted on a combined surface of said second side of said plurality of compartments.

13. An antenna comprising:

at least one dipole; and

at least one antenna reflector having;

a plurality of at least three coaxial lines formed as elongated tubular compartments having rectilinear cross-sections, compartment adjacent to at least one other compartment and having;

an outer conductor having

a top structure,

a bottom structure opposite to the top structure, the bottom structure having an elongated opening, and

walls essentially perpendicular to the top structure and the bottom structure, the walls connecting the top structure to the bottom structure, where at least one wall is common for two adjacent outer conductors; and

an inner conductor suspended in the compartment whereby the outer conductor and the inner conductor of each compartment thus form a coaxial line; and

a conductive cover covering the elongated opening.

14. The antenna of claim 13, wherein the elongated tubular compartment (5) is of square cross-section.

15. The antenna of claim 13, wherein the elongated tubular compartment (5) is of rectangular shape in cross-section.

16. The antenna of claim 13, wherein the inner conductor (3) has a varying cross-section.

17. The antenna of claim 16, wherein the inner conductor has a circular cross-section of varying diameter.

18. The antenna of claim 13, wherein the inner conductors (3) of adjacent compartments (5) are connectable to each other by a cross-over element (8) inserted through an opening in the common wall between the adjacent compartments (5).

19. The antenna of claim 13, wherein the conductive cover (9) is connected to the outer conductor (4).

20. The antenna of claim 13, wherein the tubular compartments (5) of the plurality of coaxial lines (2) and the reflector (10) form a self-supporting framework.

21. The antenna of claim 13 wherein said plurality of coaxial lines comprises at least three coaxial lines.

22. The antenna of claim 13 wherein said plurality of coaxial lines comprises eight coaxial lines.

23. The antenna of claim 13 wherein the top structure of each compartment has a first side on the inside of the compartment and has a second side on the outside of the compartment;

wherein said at least one dipole is mounted on a combined surface of said second side of said plurality of compartments.