Base station antennas having reflector assemblies with RF chokes

Patent metadata

Field	Value
Publication number	US-10601120-B2
Application number	US-201815921694-A
Country	US
Kind code	B2
Filing date	Mar 15, 2018
Priority date	May 17, 2017
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A base station antenna includes a reflector assembly and a linear array of radiating elements extending forwardly from the reflector assembly. The reflector assembly includes an RF choke that has a choke body and a choke cover. The choke cover at least partially covers a choke body opening so that a choke opening of the RF choke is smaller than the choke body opening.

First claim

That which is claimed is:

1. A base station antenna, comprising:
a reflector assembly; and
a linear array of radiating elements extending forwardly from the reflector assembly,
wherein the reflector assembly includes an RF choke that has a choke body and a choke cover, wherein the choke cover at least partially covers a choke body opening so that a choke opening of the RF choke is smaller than the choke body opening,
wherein the choke opening is defined between an end of the choke body and a central portion of the choke cover, and
wherein the choke body opening is positioned along a front of the base station antenna while the choke opening is positioned along a side of the base station antenna.

2. The base station antenna of claim 1 , wherein a portion of the choke cover extends into an interior of the choke body.

3. A base station antenna, comprising:
a reflector assembly; and
a linear array of radiating elements extending forwardly from the reflector assembly,
wherein the reflector assembly includes an RF choke that has a choke body and a choke cover, wherein the choke cover at least partially covers a choke body opening so that a choke opening of the RF choke is smaller than the choke body opening,
wherein the choke body includes a path length extender that extends into an interior of the choke body.

4. The base station antenna of claim 1 , wherein a second RF choke is formed within the choke cover.

5. A base station antenna, comprising:
a reflector assembly;
a linear array of radiating elements extending forwardly from the reflector assembly,
wherein the reflector assembly includes an RF choke that has a choke body and a choke cover, the RF choke having a choke opening that opens along a side surface of the antenna,
wherein a portion of the choke cover extends parallel to a side portion of the choke body, and
wherein the choke body has an inner sidewall, an outer sidewall and a back wall and the inner sidewall extends more farther forwardly than the outer sidewall.

6. The base station antenna of claim 5 , wherein a portion of the choke cover extends into an interior of the choke body.

7. The base station antenna of claim 5 , wherein at least one of the choke body and the choke cover includes a path length extender that extends into an interior of the choke body.

8. The base station antenna of claim 5 , wherein a second RF choke is formed within the choke cover.

9. The base station antenna of claim 5 , further comprising a radome support, wherein the radome support includes an integrated choke cover support that maintains at least a portion of the choke cover in a predetermined position.

10. A base station antenna, comprising:
a reflector assembly;
a linear array of radiating elements extending forwardly from the reflector assembly,
wherein the reflector assembly includes an RF choke that has a choke body and a choke cover that extends into an interior of the choke body,
wherein the choke body has a choke body opening that opens along a front of the base station antenna and the RF choke has a choke opening that opens along a side surface of the antenna.

11. The base station antenna of claim 10 , wherein the choke opening is defined between an end of the choke body and a central portion of the choke cover.

12. The base station antenna of claim 10 , further comprising a path length extender that extends into an interior of the choke body that is mechanically attached to the choke cover.

13. The base station antenna of claim 10 , wherein the choke body includes a path length extender that extends into an interior of the choke body.

14. The base station antenna of claim 1 , wherein the RF choke is configured to block RF signals in a frequency band of operation of the radiating elements.

15. The base station antenna of claim 1 , wherein a portion of the choke cover extends parallel to a side portion of the choke body.

16. The base station antenna of claim 1 , further comprising a path length extender that is mechanically attached to the choke cover.

17. The base station antenna of claim 5 , wherein the choke opening is defined between an end of the choke body and a central portion of the choke cover.

18. The base station antenna of claim 10 , wherein the RF choke is configured to block RF signals in a frequency band of operation of the radiating elements.

19. The base station antenna of claim 1 , wherein the choke body has an inner sidewall, an outer sidewall and a back wall and the inner sidewall extends more farther forwardly than the outer sidewall.

Assignees

• Commscope Technologies Llc

Inventors

• Bisiules Peter J
• Ai Xiangyang
• Huang Joy J
• Dickerson Calvin

Classifications

• H01Q1/246 Primary

  specially adapted for base stations · CPC title

• H01Q1/42

  Housings not intimately mechanically associated with radiating elements, e.g. radome · CPC title

• H01Q21/08

  the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)} · CPC title

• H01Q21/26

  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 title