Dual polarized antenna

• US 20070146225A1
• Filed: 12/28/2005
• Published: 06/28/2007
• Est. Priority Date: 12/28/2005
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Boss, Michael, Kreuzer, Norbert, Gottl, Maximilian, Langenberg, Jorg, Rumold, Jurgen
• Granted Patent: US 7,427,966 B2
• Time in Patent Office: Days
• US Class Current: 343/797
• CPC Class Codes: H01Q 21/08 the units being spaced along or adjacent to a rectilinear path waveguide fed H01Q21/0037
• 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

Abstract

A dual polarized antenna with at least one dual polarized radiator device comprises a reflector (3) and longitudinal or transverse webs (9, 11) provided at least on its longitudinal side and/or on its transverse side. The improvement is distinguished by the following features: at least one longitudinal web (9) and/or at least two longitudinal webs (9) provided with respect to the radiator device (1, 1′) located in between and/or at least one transverse web (11) and/or at least two transverse webs (11) provided with respect to the radiator device (1, 1′) located in between are positionally changeable directly or at least indirectly by pivoting and/or bending and/or deforming and curving.

Claims

1. A dual polarized antenna with at least one dual polarized radiator device comprising:

a reflector having a longitudinal direction and a transverse direction,

at least two longitudinal webs provided on the reflector running with their greater component in the longitudinal direction, said webs being arranged offset in relation to one another in the transverse direction, the radiator device being arranged between the longitudinal webs

and/or

at least two transverse webs provided on the reflector running with their greater component in the transverse direction, said webs being arranged offset in relation to one another in the longitudinal direction, the radiator device being arranged between the transverse webs,

the polarization planes of the radiator device being aligned at an angle of +45° and

−

45°

, respectively, with respect to the longitudinal or transverse direction of the reflector,

wherein;

at least some of the webs being positionally changeable by pivoting and/or bending and/or deforming and curving.

2. Antenna according to claim 1, further comprising at least one pair, of longitudinal and/or transverse webs that are pivoted, bent and/or deformed and curved in the same direction.

3. Antenna according to claim 1, further comprising at least one pair of longitudinal and/or transverse webs that are pivoted, bent and/or deformed and curved toward one another.

4. Antenna according to claim 1, further comprising at least one pair of longitudinal and/or transverse webs that are pivoted, bent and/or deformed and curved away from one another.

5. Antenna according to one of claim 1, wherein the bending or pivoting or curving axis runs parallel to longitudinal webs.

6. Antenna according to one of claim 1, wherein the bending or pivoting or curving axis runs parallel to transverse webs.

7. Antenna according to one of claim 1, further comprising two longitudinal webs and/or transverse webs interacting with respect to a radiator device that are pivotable toward one another in such a way that the clear distance between the ends (9′

, 11′

) of the longitudinal and/or transverse webs lying away from the reflector is greater than in a basic position, in which the longitudinal and/or transverse webs are aligned perpendicular to the plane of the reflector or to a reflector region in the direct vicinity of the radiator device.

8. Antenna according to one of claim 1, further comprising two longitudinal webs and/or transverse webs interacting with respect to a radiator device that are pivoted, bent or deformed or curved away from another in such a way that the clear distance between the ends of the longitudinal and/or transverse webs lying away from the reflector is less than in a basic position, in which the longitudinal and/or transverse webs are aligned perpendicular to the plane of the reflector or to a reflector region in the direct vicinity of the radiator device.

9. Antenna according to one of claim 1, wherein the webs have a pivoting, bending, deforming and/or curving axis that is arranged part-way up and at a distance from the plane of the reflector, parallel to the plane of the reflector or a reflector region in the vicinity of the radiator device.

10. Antenna according to one of claim 1, wherein the webs have a pivoting, bending, deforming and/or curving axis that lies offset in relation to the longitudinal and/or transverse webs, in the plane of the reflector.

11. Antenna according to one of claim 1, wherein the reflector has a reflector portion that can be pivoted with the associated longitudinal and/or transverse web about a pivoting, bending, deforming and/or curving axis.

12. Antenna according to one of claim 1, wherein the longitudinal dimension of the longitudinal webs corresponds to the longitudinal dimension of the transverse webs.

13. Antenna according to one of claim 1, wherein the longitudinal webs and transverse webs provided on either side of a radiator arrangement form a radiator environment, the associated reflector projecting beyond the longitudinal webs and/or transverse webs, viewed from the associated radiator device.

14. Antenna according to one of claim 1, wherein the length of the longitudinal and/or transverse webs is greater than the distance between the center of the radiator devices.

15. Antenna according to one of claim 1, wherein the longitudinal and/or transverse webs are formed rectangularly or trapezoidally or n-polygonally in side view.

16. Antenna according to one of claim 1, wherein the length of the longitudinal and/or transverse webs is shorter than the clear distance between two transverse webs or longitudinal webs.

17. Antenna according to one of claim 1, wherein at least the longitudinal webs or the transverse webs are interrupted and the transverse or longitudinal webs run through a clear space formed as a result between two longitudinal or transverse webs.

18. Antenna according to one of claim 1, further comprising plural radiator devices arranged at a distance from one another in the longitudinal and/or transverse direction, thereby forming an antenna array, of at least one column and one row.

19. Antenna according to claim 18, comprising at least some webs provided with respect to an antenna comprising a number of radiator devices in a length which is greater than the distance between the centers of two neighboring radiator devices.

20. Antenna according to claim 18, wherein the distance between plural webs aligned in the same direction with respect to a radiator device is varied with respect to different radiator devices.

21. Antenna according to one of claim 1, further comprising slots running parallel to the reflector or preferably parallel to a reflector region in the vicinity of the associated radiator device provided at least in some longitudinal and/or transverse webs.

22. Antenna according to one of claim 1, wherein at least some of the longitudinal and/or transverse webs are electrically/galvanically connected to the reflector.

23. Antenna according to one of claim 1, wherein at least some of the longitudinal and/or transverse webs are capacitively connected to the reflector.

24. Antenna according to claim 22, further comprising a connecting wire establishing an additional electrical/galvanic connection between at least one longitudinal web and/or at least one transverse web and the associated reflector.

25. Antenna according to claim 23, wherein the capacitive coupling of at least one longitudinal and/or transverse web takes place by means of a coaxial, capacitive coupling in such a way that the reflector or a longitudinal/transverse web is connected to an electrically conducting outer sleeve, and the associated longitudinal or transverse web or the reflector being electrically/galvanically connected to an inner conductor at a distance therefrom, the inner conductor being held by means of a dielectric provided in the interior of the coaxial outer conductor.

26. Antenna according to claim 25, wherein the capacitive, coaxial coupling has a length of λ

/4, where λ

represents a wavelength of a frequency band to be transmitted.

27. Antenna according to one of claim 1, wherein at least one longitudinal and/or transverse web is mechanically connected to the reflector by means of a dielectric pivoting body, forming a pivoting axis or pin.

28. Antenna according to one of claim 1, wherein the longitudinal and/or transverse webs are at least partly conductive and/or consist at least partly of dielectric material.

29. Antenna according to one of claim 1, wherein at least some of the longitudinal and/or transverse webs are profiled in cross section, preferably have an S-, a Z- or an L-shaped profile.

30. Antenna according to one of claim 1, wherein parts of the antenna that are pivotable, bendable or can be made to bend or curve in themselves, in particular the longitudinal and/or transverse webs, have or comprise spring elements, thin conductive layers, on a film substrate or partly flexible printed circuit boards or portions of a printed circuit board.

31. Antenna according to one of claim 1, wherein at least a number of longitudinal webs with respect to a specific radiator device and/or at least some transverse webs with respect to different radiator devices are coupled to one another.

32. Antenna according to one of claim 1, wherein the adjustment can take place manually or by means of an actuating or control device.

33. Antenna according to claim 30, wherein the positional change of the longitudinal and/or transverse webs is remotely controllable.

34. Antenna according to one of claim 1, wherein at least one longitudinal web and/or at least one transverse web has varied heights over its entire length of extent or at least has a different height than a further longitudinal and/or of transverse web.

35. Antenna according to one of claim 1, wherein the longitudinal and/or transverse webs are at least divided in two, in their longitudinal direction, thereby producing at least two longitudinal-web portions or two transverse-web portions, which are positionally changeable in relation to one another about at least one bending or pivoting axis provided between them and with respect to the reflector about a further bending or pivoting axis.

36. Antenna according to one of claim 1, wherein the longitudinal web and/or the transverse web can be flipped over onto the plane of the reflector, the bending and/or pivoting axis arranged at the outer limitation of the reflector being able to increase the area of the reflector when the longitudinal and/or transverse web is pivoted outward.

37. Antenna according to claim 35, wherein at least the portion of the longitudinal or transverse web lying closer to the reflector can be flipped over inwardly onto the plane of the reflector or outwardly as an extension.

38. Antenna according to one of claim 1, wherein at least two longitudinal webs and/or transverse webs, arranged with lateral offset in relation to one another, are provided in the longitudinal and/or transverse direction, of which at least the inner or the outer longitudinal web and/or the inner or outer transverse web can be made to bend or pivot in themselves or about a bending or pivoting axis.

39. Antenna according to claim 38, wherein in each case both longitudinal webs and/or transverse webs provided with lateral offset on one side of the radiator device can be made to bend and/or pivot about a bending line or pivoting axis or in themselves, to be precise in such a way that the longitudinal webs (9, 309) and/or the transverse webs are flipped over parallel to one another, running toward one another or away from one another, into the plane of the reflector.

40. Antenna according to one of claim 1, wherein the longitudinal and/or transverse webs are provided with clearances or slots which are dimensioned in such a way that, when there is corresponding pivoting of the longitudinal or transverse webs in the direction of the radiator device, and consequently toward the transverse and/or longitudinal webs running transversely thereto, the latter at least partly enter with their relevant end portion or protrude through these clearances or slots.

41. Antenna according to one of claim 1, wherein slots occurring between the reflector and the longitudinal and/or transverse webs are covered by additional longitudinal and/or transverse webs with a smaller height between the radiator device and the longitudinal and/or transverse web.