Base station antennas having an active antenna module and related devices and methods
Base station antennas include an externally accessible active antenna module releasably coupled to a recessed segment that is over a chamber in the base station antenna and that is longitudinally and laterally extending along and across a rear of a base station antenna housing. The base station antenna housing has a passive antenna assembly that cooperates with the active antenna module.
1. A base station antenna comprising:
a housing of a base station antenna comprising a passive antenna assembly in the housing; and
left and right side external mounting members that project rearward from a rear of the housing and extend along only a sub-length of the housing between a top portion and a longitudinally spaced apart medial portion of the housing, wherein the left and right side external mounting members are laterally spaced apart and extend in a longitudinal direction of the base station antenna, and wherein the left and right side mounting members are attached to the rear of the housing and extend continuously along the sub-length.
2. The base station antenna of claim 1 , wherein the left and right side external mounting members terminate above the medial portion of the housing.
3. The base station antenna of claim 1 , wherein the rear has a recessed segment that extends laterally and longitudinally for a sub-length of the housing, wherein the left and right side external mounting members extend along a portion of the recessed segment, and wherein the left and right side external mounting members terminate above a lower end of the recessed segment.
4. The base station antenna of claim 1 , wherein the left and right side external mounting members comprise left and right side external rails.
5. The base station antenna of claim 1 , wherein the left and right side external mounting members are electrically coupled to a reflector in the housing.
6. The base station antenna of claim 1 , wherein the left and right side external mounting members are configured to electrically couple to an active antenna module releasably attachable to the left and right side mounting members.
7. The base station antenna of claim 1 , wherein the left and right side external mounting members are configured to receive fixation members that attach an active antenna module to position the active antenna module behind and along a portion of the housing.
8. The base station antenna of claim 1 , wherein a bottom end of the left and right side external mounting members terminate at or above a medial location of the housing, and wherein a top end of the left and right side external mounting members terminate a distance below a top end of the housing.
9. The base station antenna of claim 1 , further comprising left and right side internal rails that are laterally spaced and that longitudinally extend inside the housing, wherein the left side internal rail is coupled to the left side external mounting member, wherein the right side internal rail is coupled to the right side external mounting member, and wherein the left and right side internal rails have a longer length in the longitudinal direction than the left and right side external mounting members.
10. The base station antenna of claim 1 , further comprising first and second laterally extending support members in the housing that are positioned between longitudinally extending internal rails in the housing.
11. The base station antenna of claim 1 , further comprising first and second cross-members coupled to first and second internal rails that together surround a window comprising a frequency selective surface and/or substrate (FSS), wherein the FSS is positioned between the left and right side external mounting members and is configured to reside in front of an active antenna module held behind the rear of the housing.
12. The base station antenna of claim 1 , further comprising first and second internal rails in the housing that are coupled to the left and right side mounting members and to a reflector in the housing.
13. The base station antenna of claim 1 , wherein the left and right side external mounting members are left and right side external rails, wherein the base station antenna further comprises a bolt that extends through a first internal rail in the housing, a rear wall of the housing and one of the left or right side external rails.
14. The base station antenna of claim 13 , further comprising a spacer with a bolt hole, wherein a first portion of the spacer resides in a hole in the rear wall of the housing that has an opening with a shape that corresponds to the first portion of the spacer, and wherein the bolt extends through the one of the left or right side external rail, through the bolt hole of the spacer and into the first internal rail.
15. The base station antenna of claim 1 , wherein the housing comprises right and left side walls that have a first height along a recessed segment in the rear of the housing, wherein the right and left side walls have a second height that is greater than the first height at a second segment longitudinally spaced apart from the recessed segment, wherein the left and right side external mounting members reside along the recessed segment, wherein a difference between the first and second heights is in a range of about 0.25 inches and about 6 inches, and wherein a seal cap projects rearwardly from a lower portion of the recessed segment.
16. A base station antenna comprising:
a housing of a base station antenna comprising a passive antenna assembly in the housing;
left and right side external mounting members that project rearward from a rear of the housing and extend along only a sub-length of the housing between a top portion and a longitudinally spaced apart medial portion of the housing, wherein the left and right side external mounting members are laterally spaced apart and extend in a longitudinal direction of the base station antenna; and
a frequency selective surface and/or substrate “FSS” in the housing, wherein the FSS extends laterally a distance that is at least partially between the left and right side mounting members and extends longitudinally a distance sufficient to reside at least partially between the top portion of the housing and a lower end of the left and right side mounting members.
17. The base station antenna of claim 16 , wherein the rear of the housing comprises a radome, and wherein the FSS is adjacent the radome, in a front to back direction of the housing.
18. The base station antenna of claim 16 , wherein the rear of the housing comprises a radome, and wherein the FSS is coupled to the radome.
19. A base station antenna comprising:
a housing of a base station antenna comprising a passive antenna assembly in the housing;
left and right side external mounting members that project rearward from a rear of the housing and extend along only a sub-length of the housing between a top portion and a longitudinally spaced apart medial portion of the housing, wherein the left and right side external mounting members are laterally spaced apart and extend in a longitudinal direction of the base station antenna; and
a frequency selective surface and/or substrate in the housing that is positioned to define a front to back separation distance from a reflector in an active antenna module mounted to the left and right side external mounting members that is in a range of about 3 mm to about 10 mm.
20. A base station antenna comprising:
a housing comprising a passive antenna assembly in the housing, wherein the passive antenna assembly comprises a first linear array of radiating elements and a second linear array of radiating elements laterally spaced apart from the first linear array of radiating elements, and wherein the first and second linear array of radiating elements extend along a longitudinal direction of the housing; and
a frequency selective surface and/or substrate “FSS” in the housing, wherein the FSS extends laterally and longitudinally a sub-distance of a length of the housing to reside between a top portion and a medial portion of the housing and to reside laterally at least partially between the first linear array of radiating elements and the second linear array of radiating elements, wherein the first and second linear arrays of radiating elements extend along the longitudinal direction of the housing a greater distance than the FSS.