Mobile radio antenna

• US 10,122,077 B2
• Filed: 12/18/2014
• Issued: 11/06/2018
• Est. Priority Date: 01/23/2014
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Frohler, Christian, Staita, Christoph, Krasny, Tobias, Feistl, Peter, Gottl, Maximilian
• Primary Examiner(s): Mancuso, Huedung
• Application Number:
  US15/112,900
• Publication Number:
  US 20170040679A1
• Time in Patent Office: 1,419 Days
• Field of Search: 343872
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 15/16 curved in two dimensions, e.g. paraboloidal
• CPC Class Codes: H01Q 19/108 Combination of a dipole with a plane reflecting surface H01Q19/106 takes precedence; strip line H01Q9/065
• 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 mobile radio antenna includes a complete reflector is formed as one piece or by or connected to the at least one or more reflectors, or comprises at least one or more reflectors. The complete reflector comprises on the two outer longitudinal sides thereof extending in the longitudinal direction a first shield wall which shields the first and/or passive component space and/or distribution space, and a second shield wall connects directly or indirectly to the first shield wall. The two second shield walls extending on the longitudinal sides of the complete reflector protrude in the backwards direction of the antenna across a mounting plane or a section plane along which plane the first or passive component space and/or distribution space is separated or divided from the second or active component space.

Claims

1. Antenna comprising:

a complete reflector having a front side and a rear side,

a plurality of radiators arranged in one or in a plurality of antenna columns on the reflector front side, which antenna columns extend in parallel with one another,

the complete reflector being formed in one piece or integrally connected to at least one of the plurality of reflectors, or the complete reflector comprises at least one or the plurality of reflectors,

a first component and/or wiring compartment provided on the reflector rear side opposite the radiators for accommodating components and/or wiring leading to the radiators,

a housing in the form of a radome to put up the at least one reflector and the associated radiators as well as the components and/or wirings, the radome comprising a radome wall in the direction of radiation of the radiators,

the complete reflector comprising at each of two outer longitudinal sides extending in the longitudinal direction a first screening wall which screens the first component and/or wiring compartment,

the first screening walls each followed directly or indirectly by a second screening wall, and

the two second screening walls extending at the longitudinal sides of the complete reflector projecting in the rearward direction of the antenna beyond a mounting plane or a sectional plane, along which the first component and/or wiring compartment is separated or divided into the first component and/or wiring compartment and a second component compartment whereby the second component compartment is provided for housing active components,

the radome comprising a rear wall which is connected in one piece with the front side radome wall via the radome side walls,

the radome having in cross section from its side wall portions in the transition region to its rear wall a slot- and/or groove-shaped pocket in which the associated second screening wall engages in the mounted state, and

the complete reflector comprising the mounted radiators and comprising its first component and/or wiring compartment can be axially guided into and/or out of the radome.

2. Antenna according to claim 1, wherein the radome is closed in the circumferential direction over more than 20% of its total length.

3. Antenna according to claim 2, further comprising plug interfaces in the first component and/or wiring compartment and by that lies in the reflector interior, directly behind an opening provided in the rear wall of the radome.

4. Antenna according to claim 3, wherein the plug interfaces comprises a plurality of plug-in connectors which are held mounted on a plug strip, and are mounted on the complete reflector in the region of the anchoring and/or mounting portion.

5. Antenna according to claim 1, wherein the one-part or integral complete reflector consists of a metal plate or sheet metal, in the form of a stamped and folded part or stamped and bent part, which is provided with a pattern of holes.

6. Antenna according to claim 1, wherein side wall portions of the radome are of such a size that they extend as far as the lower most limiting edge of the second screening wall, the limiting edge being furthest away from the radiators, where the side wall portions have a narrowly defined curfed portion in order to form in each case an inner wall portion on the inner side of the second screening wall facing one another whereby the inner wall portions taper towards one another so as to form a rear wall.

7. Antenna according to claim 1, wherein, with regard to each antenna column, the reflector has at its sides extending in the longitudinal direction a reflector web which rises with respect to the reflector plane at least with one component in the direction of radiation and then merges into a connection web which is oriented to extend in parallel with the reflector plane.

8. Antenna according to claim 7, wherein two antenna columns arranged next to one another are integrally interconnected via a connection web which connects two adjacent reflector webs of two adjacent antenna columns.

9. Antenna according to claim 7, wherein the outermost reflector webs situated furthest away from one another are each integrally connected to the associated first screening wall via a connection web which extends in parallel with the reflector plane.

10. Antenna according to claim 7, wherein the complete reflector rests on the inner wall of the radome in the region of its connection webs and/or of its transition region to the first screening wall.

11. Antenna according to claim 10, wherein bead-shaped or web-shaped elevations, which extend in the longitudinal direction or are offset in the longitudinal direction are formed on the inner wall of the radome, which elevations are in contact with the complete reflector and are supported thereon, at the transition region of the first screening wall to the associated side web connected thereto or on the side web.

12. Antenna according to claim 1, wherein the complete reflector comprises an anchoring and mounting portion for mounting active components and/or whereby a sectional plane for mounting active components is formed by the anchoring and mounting portion.

13. Antenna according to claim 12, wherein the anchoring and mounting portion comprises a U-shaped mounting portion which is U-shaped and is so arranged that its opening region faces the particular longitudinal side of the complete reflector, with the formation of two side webs which are offset relative to one another transversely to the reflector plane, the side web that is further away from the radiators forming the mounting plane or sectional plane for mounting the active components.

14. Antenna according to claim 13, wherein the anchoring portion is formed in the manner of a U-shaped mounting portion between the first and second screening walls.

15. Antenna according to claim 1, wherein the first screening wall merges in each case into the associated second screening wall connected thereto, the second screening wall having a following wall portion which is turned back and guided back towards the radiators, and which merges into a mounting flange which extends transversely thereto and in parallel with the reflector plane, and to which the active components are anchored at least indirectly.

16. Antenna according to claim 1, wherein the complete reflector consists of an extruded metal part.

17. Antenna according to claim 1, wherein the second screening walls project beyond the mounting plane and/or the sectional plane by an amount which corresponds to at least 5% or more of the height or depth of the second or active components.

18. Antenna according to claim 1, wherein the second screening walls project beyond the mounting plane and/or the sectional plane by an amount which is at least 5 mm.

19. Antenna according to claim 1, wherein the complete reflector and the radome are fixed to one another via screw connections which are screwed in via bores provided in the rear wall of the radome in anchoring portions of the complete reflector and/or are secured by nuts.

20. Mobile radio antenna comprising:

a plurality of radiators arranged in a plurality of antenna columns extending in parallel with one another, the plurality of radiators having a radiation direction,

a complete reflector being formed in one piece or integrally connected to at least one of the plurality of reflectors, or comprising at least one or the plurality of reflectors, the complete reflector having a front side, a rear side and first and second outer longitudinal sides each extending in a longitudinal direction,

a housing which comprises a radome in the radiation direction,

at least one component and/or wiring compartment provided on the reflector rear side opposite the radiators, the complete reflector and the at least one component and/or wiring compartment provided on the reflector rear side being at least partially accommodated within the housing,

at least one further, active component compartment,

the complete reflector comprising first screening walls at each of the first and second outer longitudinal sides extending in the longitudinal direction, the first screening walls being structured to screen the at least one passive component and/or wiring compartment,

the first screening walls each followed directly or indirectly by a second screening wall, the second screening walls extending at the longitudinal sides of the complete reflector projecting in a rearward direction of the antenna beyond a mounting or sectional plane, along which the at least one passive component and/or wiring compartment is separated or divided from the at least one active component compartment;

the radome putting up the at least one reflector and associated radiators as walled components and/or wirings, the radome comprising a radome wall in the direction of radiation of the radiators, the radome comprising a rear wall which is connected in one piece with the front side radome wall via the radome side walls, the radome has in cross-section from its side wall portions in a transition region to its rear wall a slot- and/or groove-shaped pocket in which the associated second screening wall engages in the mounted state, the complete reflector comprising the mounted radiators and the component and/or wiring compartment being axially guided into and/or out of the radome.