Mobile radio antenna radome with integral reflector

• US 7,245,267 B2
• Filed: 04/15/2005
• Issued: 07/17/2007
• Est. Priority Date: 02/08/2005
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Obermaier, Johann, Gottl, Maximilian
• Primary Examiner(s): Ho; Tan
• Application Number:
  US11/106,675
• Publication Number:
  US 20060176235A1
• Time in Patent Office: 823 Days
• Field of Search: 343/702, 343/872, 343/912, 343/781.P, 343/781.CA
• US Class Current: 343/872
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 1/425 comprising a metallic grid
• CPC Class Codes: H01Q 1/52 Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure absorbing means H01Q17/00
• CPC Class Codes: H01Q 15/142 using insulating material for supporting the reflecting surface
• CPC Class Codes: H01Q 19/021 Means for reducing undesirable effects
• CPC Class Codes: H01Q 19/104 using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas periscopic fed Cassegrain antennas H01Q19/191; passive relays H04B7/145

Abstract

An improved radome comprises at least one conductive flat structure integrally incorporated in the material of the radome, which acts as a reflector for a mobile radio antenna at least partially enclosed within the radome.

Claims

1. A radome for a mobile radio antenna, said radome including:

a radome structure having a wall comprising material,

a reflector, which is not integrated within the radome structure, being disposed within the radome structure at a distance from the wall, and

at least one flat line conductive surface structure incorporated in the radome structure wall material, said at least one flat line conductive surface forming a double reflector for the first-mentioned reflector.

2. The radome according to claim 1, wherein the radome structure comprises a front face and a rear wall, the at least one flat line structure being incorporated at least in the rear wall and/or in the front face of the radome structure.

3. The radome according to claim 1, wherein the radome structure comprises a front face and at least two side wall sections, the at least one flat line structure being incorporated in the front face and/or in the side wall sections of the radome in the form of a side wall section or a side wall web.

4. The radome according to claim 1, wherein the flat line structure in the wall of the radome forms an integrated reflector.

5. The radome according to claim 1, wherein the radome structure comprises an enclosure that is closed at least on part of its height and over the entire length thereof in a circumferential direction, said radome enclosure having a rear wall in addition to a front face in side wall sections or has only a front face, with side wall sections.

6. The radome according to claim 1, wherein non-conductive sections comprise a slot structures that pass through the at least one flat line structure.

7. The radome according to claim 1, wherein the flat line structure has branching sections and/or non-conductive sections that form passive beamforming elements.

8. The radome according to claim 1, wherein the at least one flat line structure which is incorporated in the wall forms the single reflector of the mobile radio antenna.

9. The radome according to claim 1, wherein the at least one flat line structure comprises a conductive mesh structure.

10. The radome according to claim 1, wherein the flat line structure is in the form of a metal foil which is coated at least on one side with a layer comprising paper.

11. Radome according to claim 1, wherein an omnidirectional antenna element is accommodated in the interior of the radome.

12. Radome according to claim 1, wherein linearly polarized antenna elements are accommodated in the interior of the radome.

13. Radome according to claim 12 wherein the antenna elements are held and mounted on a supporting strip in the interior of the radome.

14. Radome according to claim 1 wherein only one reflector is provided and is incorporated as an integrated reflector in the material of the radome in the rear wall thereof.

15. Radome according to claim 1, further comprising a further reflector located in front of the rear wall and on which the antenna elements or antenna element groups are arranged.

16. Radome according to claim 1, wherein the flat line structure comprises a line patch.

17. Radome according to claim 1, wherein the mobile radio antenna represents a single-band, a dual-band or a multiband antenna.

18. Radome according to claim 1, wherein the antenna is a single-polarized or dual-polarized antenna.

19. The radome according to claim 1, wherein the at least one flat line structure comprises a hole structure.

20. The radome according to claim 1, wherein the at least one flat line structure comprises a grating structure.

21. The radome according to claim 1, wherein the at least one flat line structure comprises a line grating structure.

22. The radome according to claim 1, wherein the at least one flat line structure comprises a wire mesh structure.

23. A radome for a mobile radio antenna, the radome comprising:

an enclosure comprising a material and having a front face and at least two side wall sections;

at least one conductive surface flat line structure incorporated in the front face and/or in the side wall sections of the radome in the form of a side wall section or a side wall web, said conductive surface flat line structure providing an integrated reflector;

the at least one conductive flat line structure provided in the side wall section forming side wall sections which are associated with the integrated reflector, are electrically connected to the integrated reflector, and/or represent part of the integrated reflector.

24. A radome for a mobile radio antenna, comprising:

radome material,

at least one flat line structure incorporated in the material of the radome,

wherein the at least one flat line structure has a hole structure,

wherein the flat line structure is provided with rows of apertures which run in the longitudinal direction or aligned at an angle with respect to the longitudinal or vertical direction of the radome.

25. The radome according to claim 24, wherein the apertures are of such a size that the opening size or the distance between two conductive elements is less than λ

/10, where λ

is the wavelength of the highest frequency to be transmitted.