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1. WO2020142353 - END PLATE ASSEMBLIES FOR BASE STATION ANTENNAS, METHODS FOR MANUFACTURING THE SAME AND RELATED BASE STATION ANTENNAS

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[ EN ]

That Which is Claimed is:

1. An end plate assembly for a base station antenna, the end plate assembly comprising:

an end plate configured to enclose an end opening of a radome of a base station antenna and to be mounted in the end opening, wherein the end plate includes a first side surface that is an external side surface and a second side surface that is an internal side surface that is opposite the first side surface;

wherein the end plate is an integral dielectric molded member that includes a first through hole machined in the molded member,

wherein the end plate assembly includes a first fitting and a first connecting element, and

wherein the first fitting has a planar section that is configured to planarly rest on the second side surface of the end plate, and the first connecting element is configured to pass through the first through hole of the end plate and connect the planar section of the first fitting to a mounting bracket that is configured to support the base station antenna on a foundation, such that the planar section of the first fitting is pressed against the second side surface of the end plate and the mounting bracket is mounted on the first side surface of the end plate.

2. The end plate assembly for a base station antenna according to claim 1 , wherein the first fitting has a connecting section that is configured to mount the end plate assembly in the end opening of the radome.

3. The end plate assembly for a base station antenna according to claim 2, wherein the first fitting has an L shape, wherein the planar section and the connecting section are respectively constructed to be the first and second arms of the L shape.

4. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the first fitting is a metal member or a fiberglass reinforced plastic member.

5. The end plate assembly for a base station antenna according to claim 4, wherein the first fitting is an aluminum sheet stamped member or a cast aluminum member.

6. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the end plate comprises fiberglass reinforced plastic.

7. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the end plate has a peripheral wall.

8. The end plate assembly for a base station antenna according to claim 2 or claim 3, wherein the end plate has a peripheral wall that includes a notch, and the connecting section of the first fitting is disposed in the notch.

9. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the end plate assembly includes the mounting bracket.

10. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the mounting bracket is made of metal, ceramic or fiberglass reinforced plastic.

11. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the first connecting element is a screw.

12. The end plate assembly for a base station antenna according to claim 11 , wherein the planar section of the first fitting has a through hole, and the mounting bracket has a hole with an internal thread, wherein the screw is configured to pass through the through hole of the first fitting and the first through hole of the end plate and engage the internal thread of the hole of the mounting bracket.

13. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the end plate has a second through hole in the molded member, wherein the second through hole is configured to receive an electrical connector.

14. The end plate assembly for a base station antenna according to claim 13, wherein the end plate assembly includes the electrical connector received in the second through hole.

15. The end plate assembly for a base station antenna according to claim 13, wherein the end plate has a third through hole in the molded member that is adjacent the second through hole, wherein the third through hole is configured to receive a second connecting element for the electrical connector.

16. The end plate assembly for a base station antenna according to claim 15, wherein the second connecting element is a screw.

17. The end plate assembly for a base station antenna according to claim 13, wherein the electrical connector includes a flange that is configured to rest against the second side surface of the end plate and to be mounted on the second side surface of the end plate via the second connecting element.

18. The end plate assembly for a base station antenna according to claim 13, wherein the electrical connector is a 4.3-10 connector.

19. The end plate assembly for a base station antenna according to claim 13, wherein the electrical connector is an AISG connector.

20. The end plate assembly for a base station antenna according to any of claims 1-3, wherein the end plate has a fourth through hole in the molded member, wherein the fourth through hole is configured to receive a third connecting element for mounting a reflector on the second side surface of the end plate.

21. The end plate assembly for a base station antenna according to claim 20, wherein the end plate assembly includes a second fitting having a planar section, wherein the planar section of the second fitting is configured to planarly rest against the second side surface of the end plate, the third connecting element is configured to pass through the fourth through hole and mount the planar section of the second fitting on the second side surface of the end plate, and the second fitting has a connecting section for connection with the reflector.

22. The end plate assembly for a base station antenna according to claim 21, wherein the third connecting element is a screw, and the planar section of the second fitting has a hole with an internal thread cooperating with the screw or is provided with a stand-off cooperating with the screw.

23. The end plate assembly for a base station antenna according to claim 21 , wherein the second fitting is a metal member or a fiberglass reinforced plastic member.

24. The end plate assembly for a base station antenna according to claim 23, wherein the second fitting is an aluminum sheet stamped member or a cast aluminum member.

25. The end plate assembly for a base station antenna according to claim 21 , wherein the second fitting is configured to be an L-shaped or T-shaped member.

26. A base station antenna comprising:

a radome having an end opening;

a reflector received in the radome; and

radiating elements mounted to extend outwardly from the reflector,

wherein the base station antenna further includes an end plate assembly for the base station antenna according to any one of claims 1-25, wherein the end plate of the end plate assembly encloses the end opening of the radome and is mounted in the end opening.

27. The base station antenna according to claim 26, wherein the base station antenna is constructed as a small cell.

28. A method for manufacturing an end plate assembly for a base station antenna according to any of claims 1-25, comprising the steps of:

providing a machinable dielectric molded end plate blank;

machining a first through hole in the end plate blank;

machining the end plate blank into an end plate; and

providing a first fitting and a first connecting element.

29. The method according to claim 28, the method further comprising:

providing a mounting bracket; and

mounting a mounting bracket on a first side surface of the end plate via the first connecting element passing through the first through hole of the end plate, and planarly pressing a planar section of the first fitting against a second side surface of the end plate.

30. The method according to claim 28 or claim 29, the method further comprising: molding the end plate blank in a mold before providing the end plate blank.

31. The method according to claim 28 or claim 29, wherein the step of machining the end plate blank into an end plate further includes machining in the end plate blank a second through hole for an electrical connector and a third through hole adjacent the second through hole.

32. The method according to claim 31, the method further comprising the step of mounting the electrical connector on the end plate by means of a second connecting element passing through the third through hole.

33. The method according to claim 28 or claim 29, wherein the step of machining the end plate blank into an end plate further includes: machining in the end plate blank a fourth through hole, which is configured to receive a third connecting element for fixing a reflector on the second side surface of the end plate.

34. An end plate assembly for a base station antenna, comprising

a metal bottom plate,

a dielectric cover member that is connected to the metal bottom plate; and

wherein the dielectric cover member has a peripheral wall that is configured to enclose an open bottom end of a radome of the base station antenna.

35. The end plate assembly for the base station antenna according to claim 34, wherein the dielectric cover member includes an axial stop that is configured to limit movement of the metal bottom plate in an axial direction, the axial stop projecting radially inward from the peripheral wall of the dielectric cover member.

36. The end plate assembly for the base station antenna according to claim 35, wherein the axial stop comprises at least one of:

(a) a flange projecting radially inward from the peripheral wall of the dielectric cover member and

(b) a plurality of protrusions projecting radially inward from the peripheral wall of the dielectric cover member, where the plurality of protrusions are spaced apart from each other on an inner circumferential surface of the peripheral wall of the dielectric cover member in a circumferential direction of the dielectric cover member.

37. The end plate assembly for the base station antenna according to claim 35, wherein the axial stop comprises:

a flange projecting radially inward from the peripheral wall of the dielectric cover member; and

a plurality of protrusions projecting radially inward from the peripheral wall of the dielectric cover member, wherein the plurality of protrusions are spaced apart from each other on an inner circumferential surface of the peripheral wall of the dielectric cover member in a circumferential direction of the dielectric cover member;

wherein the metal bottom plate is clamped between the flange and the protrusions.

38. The end plate assembly for the base station antenna according to claim 37, wherein the flange is a continuous annular member.

39. The end plate assembly for the base station antenna according to claim 37, wherein the plurality of protrusions are uniformly distributed on the inner circumferential surface of the peripheral wall of the dielectric cover member in the circumferential direction of the dielectric cover member.

40. The end plate assembly for the base station antenna according to claim 37, wherein an individual protrusion has an elongated protruding portion extending on the inner circumferential surface of the peripheral wall of the dielectric cover member in the circumferential direction of the dielectric cover member, the protruding portion having two ends, wherein one of the ends of the protruding portion is provided with a rotational stop that limits the bottom plate in the circumferential direction of the dielectric cover member.

41. The end plate assembly for the base station antenna according to any of claims 34-40, wherein the metal bottom plate is fixed to the dielectric cover member via fastening members.

42. The end plate assembly for the base station antenna according to any of claims 37-40, wherein the metal bottom plate is fixed to the dielectric cover member via fastening members, wherein the metal bottom plate and the flange respectively have holes for receiving the fastening elements.

43. The end plate assembly for the base station antenna according to any of claims 37-40, wherein the flange has a plurality of slots, each of which overlaps with one of the protrusions in an axial direction of the dielectric cover member.

44. The end plate assembly for the base station antenna according to any of claims 34-40, wherein the dielectric cover member has holes in the peripheral wall thereof, wherein the holes are configured to receive fastening elements for securing the dielectric cover member to the radome.

45. The end plate assembly for the base station antenna according to any of claims 37-40, wherein the metal bottom plate has protruding portions and recessed portions alternating with each other on an edge thereof, wherein the protruding portions are configured to rest against the flange between every two adjacent protrusions of the dielectric cover member, and are rotatable into channels that are formed between the flange of the dielectric cover member and the respective protrusions.

46. The end plate assembly for the base station antenna according to any of claims 34-40, wherein the dielectric cover member is a glass fiber reinforced plastic member, and the metal bottom plate is made of aluminum or an aluminum alloy.

47. A base station antenna, comprising:

a radome having an open bottom end;

a reflector received within the radome; and

radiating elements mounted to extend outwardly from the reflector;

wherein the base station antenna further comprises an end plate assembly for the base station antenna according to any of claims 34-46, wherein the end plate assembly encloses the open bottom end of the radome.

48. The base station antenna according to claim 47, wherein the base station antenna is a small cell base station antenna.

49. A method for assembling the end plate assembly for the base station antenna according to claim 45, comprising the steps of:

providing the metal bottom plate and the dielectric cover member;

resting the metal bottom plate against the flange of the dielectric cover member, wherein each of the protruding portions of the metal bottom plate is positioned between two adjacent protrusions of the dielectric cover member; and

rotating the metal bottom plate relative to the dielectric cover member in the circumferential direction of the dielectric cover member, until the protruding portions enter a predetermined position between the flange of the dielectric cover member and the respective protrusions.

50. The method according to claim 49, wherein the metal bottom plate and the dielectric cover member are fixed by means of fastening elements.