Mobile radio antenna arrangement for a base station

• US 20050134512A1
• Filed: 12/18/2003
• Published: 06/23/2005
• Est. Priority Date: 12/18/2003
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Gabriel, Roland, Gottl, Maximilian
• Granted Patent: US 7,015,871 B2
• Time in Patent Office: Days
• US Class Current: 343/757
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 3/06 over a restricted angle

Abstract

An improved mobile radio antenna arrangement for a base station is distinguished by the following features:

• • a pivoting shaft or pivoting device (21) which runs in the longitudinal direction and/or in the vertical direction is provided within the radome (3),
  • the reflector (13) is at least indirectly held and mounted on the pivoting device or pivoting shaft (21),
  • the interior (3′) of the radome (3) has dimensions such that the reflector (13), which is located within the radome (3), and the antenna elements (15) which are provided can be pivoted in the azimuth direction relative to the radome (3) via the pivoting device or pivoting shaft (21) which is located within the radome (3).

Claims

1. A mobile radio antenna arrangement for mounting on a mast or other structure as a base station, the antenna arrangement being designed in the form of an antenna array comprising two or more antenna elements or antenna element groups arranged one above the other in the vertical direction, the antenna elements or antenna element groups being arranged in front of a reflector which extends in the vertical direction, the antenna elements or antenna element groups and the reflector being accommodated in a radome, the antenna elements or antenna element groups being arranged in front of the reflector prefabricated as a unit, and

said antenna arrangement comprising:

a pivoting shaft or pivoting device which runs in the longitudinal direction and/or in the vertical direction within the radome, the reflector at least indirectly being held and mounted on the pivoting device or pivoting shaft,

when the interior (3′

) of the radome has dimensions such that the reflector, which is located within the radome, and the antenna elements are pivotable in the azimuth direction relative to the radome via the pivoting device or pivoting shaft which is located within the radome.

2. The antenna arrangement according to claim 1, wherein the antenna arrangement together with the antenna elements or antenna element groups, the reflector and the associated radome are prefabricated as a single modular unit.

3. The antenna arrangement according to claim 1, wherein the antenna arrangement has a single column.

4. The antenna arrangement according to claim 1, wherein the antenna arrangement has at least two columns.

5. The antenna arrangement according to one of claim 1, wherein the antenna arrangement can be pivoted through an angle 0°

<

±

30°

about the pivoting device or shaft.

6. The antenna arrangement according to one of claim 1, wherein feed and control cables, lead to connections on the radome without being pivoted.

7. The antenna arrangement according to claim 1, further including a means of pivoting arrangement for pivoting the antenna elements in the azimuth direction.

8. The antenna arrangement according to claim 1, further including at least one motor for pivoting the antenna elements.

9. The antenna arrangement according to claim 8, further including a remote control for controlling the pivoting position of the antenna elements relative to the shaft electrically and remotely.

10. The antenna arrangement according to claim 9, further including a motor arranged within the radome in the area of the pivoting shaft, by which means the pivoting movement can be carried out.

11. The antenna arrangement according to one of claim 1, wherein a different setting of the down-tilt angle can be produced, preferably electrically, by different phase control of the antenna elements which are arranged vertically one above the other.

12. The antenna arrangement according to one of claim 1, wherein at least two single-column or multi-column antenna arrays are arranged in the radome and can preferably each pivot about their own shaft in each case as far as an angle of +α

and/or −

α

.

13. The antenna arrangement according to one of claim 1, wherein at least two single-column or multi-column antenna arrays are arranged in a common radome, which transmit in different azimuth directions and can preferably be set differently to one another to an angle +α

or −

α

about their longitudinal axis.

14. The antenna arrangement according to one claim 1, wherein the radome has a hollow cylindrical cross section.