Antenna housing for base station antenna and base station antenna

Abstract

The utility model relates to an antenna housing for a base station antenna, which is characterized in that the antenna housing is provided with a front surface, a rear surface, a first side surface and a second side surface, the front surface and the rear surface are oppositely arranged, the first side surface and the second side surface are oppositely arranged, and the front surface and the rear surface are connected to form a surrounding antenna housing, at least one side surface of the first side surface and the second side surface is provided with at least one side surface contour feature used for reducing wind load, and the side surface contour feature comprises at least one groove extending in the height direction of the antenna housing. The groove is opened towards the outer side of the at least one side surface in the width direction of the radome, the groove is provided with at least one side recess in the side direction of the groove, and the side recess is opened towards the interior of the groove in the thickness direction of the radome. The technical effects are that the wind load peak value is reduced, and the omnidirectional wind load distribution on the base station antenna is optimized. The utility model also relates to a base station antenna.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of antenna, more particularly to a radome for base station antenna and a base station antenna. BACKGROUND

[0002] With the development of wireless communication industry, the communication frequency band and mode are increasing, and the number of base station antennas for transmitting and receiving wireless signals is also increasing. In addition, in order to accommodate more radio frequency elements, the size of the radome is also increasing, and the wind load of the antenna is also increasing, thereby affecting the safety of the communication tower.

[0003] One of the parameters affecting the antenna design is the effective projected area (EPA), which is determined by the calculation defined by TIA / ANSI-222-H. The effective projected area is intended to predict the impact of wind load on the antenna and its installation structure, enabling designers to create a safe design. The radome is a key structure for protecting the antenna system from external environment, and it plays an important role in the effective projected area of the base station antenna. Therefore, based on the market demand for antenna wind load, there is an urgent need for a base station antenna that reduces wind load. SUMMARY

[0004] Therefore, the utility model aims to provide a radome for base station antenna and a base station antenna, which can solve at least one of the above technical problems in the prior art.

[0005] According to the utility model, a radome for base station antenna is provided, characterized in that the radome has opposite front and rear surfaces and opposite first and second side surfaces, which are connected to form a surrounding radome,

[0006] At least one of the first and second side surfaces has at least one side profile feature for reducing wind load, wherein the side profile feature includes at least one groove extending in the height direction of the radome, the groove is open to the outside of the at least one side surface in the width direction of the radome, and the groove is provided with at least one side recess in its lateral direction, the side recess is open to the inside of the groove in the thickness direction of the radome.

[0007] The technical effects that can be achieved by the utility model include, but are not limited to: reducing the peak value of wind load and optimizing the omnidirectional wind load distribution on the base station antenna.

[0008] Advantageously, the groove includes at least one of a dovetail groove and a T-shaped groove.

[0009] Advantageously, the groove has two step surfaces facing each other at its opening, and the two step surfaces are aligned or staggered with each other in the width direction of the radome.

[0010] Advantageously, the side profile feature further comprises at least one insert which can be fixed in the recess, the insert having an insert portion and a profile structure connected to the insert portion for reducing wind loads, the insert being able to be form-fittingly inserted in the recess with its insert portion.

[0011] Advantageously, the profile structure of the insert is flush with the at least one side surface or at least partially projects beyond the at least one side surface.

[0012] Advantageously, the insert comprises a truncated sphere as its profile structure and at least one leg as its insert portion, the truncated sphere having a base facing the at least one side surface and a truncated sphere surface facing away from the at least one side surface.

[0013] Advantageously, at least two legs are provided on the truncated sphere which are arranged one after the other in the thickness direction of the radome, and the truncated sphere extends past a center line of the at least one side surface in the thickness direction of the radome.

[0014] Advantageously, the profile structure of the insert comprises a plurality of cylinders and / or ribs which are arranged one after the other in the height direction of the radome.

[0015] Advantageously, the cylinders comprise prismatic cylinders and / or circular cylinders.

[0016] Advantageously, adjacent ribs are inclined to each other and are arranged end to end.

[0017] Advantageously, the profile structure of the insert comprises at least one tooth-shaped portion which extends parallel to or perpendicularly to or obliquely to the height direction of the radome.

[0018] Advantageously, the profile structure of the insert comprises a plurality of tooth-shaped portions which are arranged one after the other.

[0019] Advantageously, the tooth-shaped portion comprises two inclined surfaces which intersect each other; or the tooth-shaped portion comprises one oblique surface, one perpendicular surface and a horizontal surface connecting the two.

[0020] Advantageously, a plurality of inserts are arranged one after the other in the recess.

[0021] Advantageously, the side profile feature is provided on a front side region and / or on a rear side region of the at least one side surface.

[0022] According to the application, a base station antenna is also provided, characterized in that the base station antenna has a radome for a base station antenna according to the application, the radome being covered at both ends by a top end cap and a bottom end cap.

[0023] The advantages of the respective embodiments and of various further embodiments will become apparent to the skilled person from the following detailed description of respective embodiments with reference to the drawings listed below. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further explained below in connection with the drawings and embodiments, wherein:

[0025] Figure 1a is a schematic diagram of the installation of a known base station antenna on a holding pole;

[0026] Figure 1b is a schematic front perspective view of a known base station antenna;

[0027] Figure 1c is a schematic top view of a known base station antenna;

[0028] Figure 2 is a schematic diagram of different wind load directions on a base station antenna;

[0029] Figure 3a is a cross-sectional view of a radome of a base station antenna according to a first embodiment of the utility model;

[0030] Figure 3b is a partial enlarged view A of the radome according to Figure 3a

[0031] Figure 4 is a first variant of the radome according to Figure 3a

[0032] Figure 5 is a second variant of the radome according to Figure 3a

[0033] Figure 6a is a schematic perspective view of a radome of a base station antenna according to a second embodiment of the utility model;

[0034] Figure 6b is a partial enlarged perspective view of the radome according to Figure 6a

[0035] Figure 6c is a partial enlarged cross-sectional view of the radome according to Figure 6a

[0036] Figure 6d is a front view of an insert of the radome according to Figure 6a

[0037] Figure 6e is a rear view of an insert of the radome according to Figure 6a

[0038] Figure 6f is a​​​​​​​Figure 6a perspective view of an insert of the radome according to

[0039] Figure 6g is according to Figure 6a another perspective view of an insert of the radome according to

[0040] Figure 7a is a partial enlarged perspective view of a radome of a base station antenna according to a third embodiment of the present utility model;

[0041] Figure 7b is according to Figure 7a a partial enlarged cross-sectional view of a radome according to

[0042] Figure 7c is according to Figure 7a another partial enlarged cross-sectional view of a radome according to

[0043] Figure 8a is a partial enlarged perspective view of a radome of a base station antenna according to a fourth embodiment of the present utility model;

[0044] Figure 8b is according to Figure 8b another partial enlarged perspective view of a radome according to

[0045] Figure 9a is a partial enlarged perspective view of a radome of a base station antenna according to a fifth embodiment of the present utility model;

[0046] Figure 9b is according to Figure 9a another partial enlarged perspective view of a radome according to

[0047] Figure 10 is a partial enlarged perspective view of a radome of a base station antenna according to a sixth embodiment of the present utility model;

[0048] Figure 11a is a partial enlarged cross-sectional view of a radome of a base station antenna according to a seventh embodiment of the present utility model;

[0049] Figure 11b is according to Figure 11a another partial enlarged cross-sectional view of a radome according to

[0050] Figure 11c is according to Figure 11a a partial enlarged perspective view of a radome according to

[0051] Figure 11d is according to Figure 11a a partial side view of a radome according to

[0052] Figure 11e is according to Figure 11a another partial side view of a radome according to

[0053] Figure 11f is according to Figure 11a a front view of the insert of the radome;

[0054] Figure 11g is according to Figure 11a a side view of the insert of the radome;

[0055] Figure 11h is according to Figure 11a an end view of the insert of the radome;

[0056] Figure 11i is according to Figure 11a a perspective view of the insert of the radome;

[0057] Figure 12a is according to Figure 11a a variant of the radome of the base station antenna;

[0058] Figure 12b is according to a partial enlarged perspective view of the radome of the base station antenna according to 12a;

[0059] Figure 12c is according to

[0060] a partial side view of the radome of the base station antenna according to 12a; Figure 12d

[0061] is according to Figure 12e a partial side view of the radome of the base station antenna according to 12a in another direction;

[0062] Figure 13a is according to a partial enlarged cross-sectional view of the radome of the base station antenna according to the eighth embodiment of the present application;

[0063] Figure 13b Figure 13a is according to another partial enlarged cross-sectional view of the radome;

[0064] Figure 13c Figure 13a is according to a partial enlarged perspective view of the radome;

[0065] Figure 13d Figure 13a is according to a partial side view of the radome;

[0066] Figure 13e Figure 13a is according to another partial side view of the radome in another direction;

[0067] Figure 13f Figure 13afront view of the insert of the radome according to

[0068] Figure 13g is according to Figure 13a side view of the insert of the radome according to

[0069] Figure 13h is according to Figure 13a end view of the insert of the radome according to

[0070] Figure 13i is according to Figure 13a perspective view of the insert of the radome according to

[0071] Figure 14a is according to Figure 13a variant of the radome of the base station antenna according to 14a;

[0072] Figure 14b is a partial enlarged cross-sectional view of the radome of the base station antenna according to 14a;

[0073] Figure 14c is a partial enlarged perspective view of the radome of the base station antenna according to 14a;

[0074] Figure 14d is a partial side view of the radome of the base station antenna according to 14a;

[0075] Figure 14e is a partial side view of the radome of the base station antenna according to 14a in another direction;

[0076] Figure 15a is a partial enlarged cross-sectional view of the radome of the base station antenna according to the ninth embodiment of the present application;

[0077] Figure 15b is another partial enlarged cross-sectional view of the radome according to Figure 15a

[0078] is a partial enlarged perspective view of the radome according to Figure 15c Figure 15a is a partial side view of the radome according to

[0079] Figure 15d Figure 15a is a partial side view of the radome according to

[0080] Figure 15e is another partial side view of the radome according to Figure 15a

[0081] Figure 15f is a front view of the insert of the radome according to Figure 15a

[0082] Figure 15g is according to​​​​Figure 15a side view of the insert of the radome according to

[0083] Figure 15h end view of the insert of the radome according to Figure 15a

[0084] Figure 15i perspective view of the insert of the radome according to Figure 15a

[0085] Figure 16a variant of the radome of the base station antenna according to 16a; Figure 15a

[0086] Figure 16b partially enlarged cross-sectional view of the radome of the base station antenna according to 16a;

[0087] Figure 16c partially enlarged perspective view of the radome of the base station antenna according to 16a;

[0088] Figure 16d partially enlarged side view of the radome of the base station antenna according to 16a;

[0089] Figure 16e partially enlarged side view of another aspect of the radome of the base station antenna according to 16a; and

[0090] Figure 17 comparison chart of the omni-directional wind load distribution characteristics of the existing base station antenna and the base station antenna of the present application. DETAILED DESCRIPTION

[0091] The present application will now be described with reference to the drawings, wherein several embodiments of the present application are shown. It should be understood, however, that the present application can be presented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be complete and fully convey the scope of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways, thereby providing additional embodiments.

[0092] It should be understood that, in all of the drawings, the same reference numerals will be used for the same elements. In the drawings, the dimensions of certain features can be exaggerated for clarity.

[0093] It should be understood that the language used in the specification is only used to describe particular embodiments and should not be construed as limiting the present application. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the same meaning as commonly understood by one of ordinary skill in the art. Well-known functions or constructions can not be described in detail for the sake of brevity and / or clarity. ​​​

[0094] As used in the specification, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. As used in the specification and in the claims, the terms "comprises", "comprising", and "having" are intended to be open-ended, meaning that they include the stated features, but do not exclude the presence of one or more other features. As used in the specification and in the claims, the term "and / or" means one or the other or both. As used in the specification and in the claims, the term "between" is intended to have its ordinary sense and include X and Y. As used in the specification and in the claims, the term "between about X and Y" means "between about X and about Y," and the term "from about X to Y" means "from about X to about Y."

[0095] In the specification, when an element is referred to as being "on", "attached", "connected", "coupled", or "contacted" to another element, it can be directly on, attached, connected, coupled, or contacted to the other element or one or more intervening elements can also be present. In contrast, when an element is referred to as being "directly on", "directly attached", "directly connected", "directly coupled", or "directly contacted" to another element, there are no intervening elements present. In the specification, when an element is referred to as being "adjacent" to another element, it can mean that the element has a portion that overlaps the adjacent element or a portion that is above or below the adjacent element.

[0096] In the specification, spatially relative terms, such as "upper", "lower", "left", "right", "front", "back", "horizontal", "vertical", and the like, can be used herein for the purpose of illustrating one feature's relationship to another feature in the drawings. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the drawings. For example, if a device is turned over in the drawings, a feature that is described as being "above" another feature in the drawings can be described as being "below" the other feature when the device is turned over. The device can be oriented in other ways (rotated 90 degrees or at other orientations) and terms such as "above", "below", "upper", "lower", "front", "back", "horizontal", "vertical" and the like are to be interpreted accordingly.

[0097] Figure 1a A known base station antenna 100 is shown in a fixed installation state on a guyed mast 2000, i.e. the base station antenna 100 can be fixed to the guyed mast 2000 via two fixed devices 3000 arranged one above the other.

[0098] The base station antenna 100 is typically installed in a vertical manner, reference Figure 1bWhen the base station antenna 100 is in normal operation, the longitudinal or vertical direction V can be substantially perpendicular to the plane defined by the horizon. The longitudinal direction V of the base station antenna 100 can be perpendicular to the horizontal direction H and the forward direction F along which the array of radiating elements mounted within the base station antenna 100 can extend forward from the reflector.

[0099] The base station antenna 100 is generally elongated and covered by a radome 101 including a front surface 102, a back surface 103, a first side surface 104, and a second side surface 106, and also by a top end cap 108 and a bottom end cap 110. In some cases, the radome 101 and end caps 108, 110 can comprise a single integral component, while in other embodiments, the radome 101 and end caps 108, 110 can comprise separate pieces that can be mounted to the radome 101. The base station antenna 100, or rather its radome 101, can have a height or height direction L, a width or width direction W, and a thickness or thickness direction D (see FIG. 1). Figure 1b and Figure 1c ).

[0100] An inner cavity is defined by the radome 101 and the two end caps 108, 110, in which inner antenna components can be housed that enable the base station antenna 100 to transmit and receive radio frequency (RF) signals, such as radiating elements, reflectors, phase shifters, duplexers, remote electronic tilt actuators, cables, controllers, etc. Exemplary antenna components are described in, e.g., PCT Publication No. WO 2017 / 165512 Al, the disclosure of which is incorporated herein by reference. The base station antenna 100 also includes connectors (not shown) that enable the base station antenna 100 to connect with one or more radios for transmitting and receiving RF signals, as well as with other associated telecommunication equipment.

[0101] The base station antenna 100 is typically mounted well above the ground in order to optimize transmission. As a result, the base station antenna 100 contributes significantly to the overall wind load on the communication tower. For example, as shown in FIG. 1, the base station antenna 100 can be subjected to high wind loads from any direction, i.e., forward, rearward, and / or lateral and / or other angularly directed wind load directions WLD. As a result, the design features of the base station antenna 100, and particularly the design features of the radome 101, can influence the overall wind load experienced by the base station antenna 100. It can be critical to reduce the wind load on the base station antenna 100. Figure 2

[0102] Furthermore, it can be important to manage the wind load on the base station antenna 100 for all different wind attack angles. That is, it can be desirable to achieve an optimized omnidirectional wind load distribution on the base station antenna 100. See, e.g., FIG. 2. Figure 17 ​As can be seen from the omni-directional wind load distribution for the existing base station antenna 100 represented by the black line, four wind load peaks or high wind load areas can be located between 30° and 70° (e.g. around 50°), between 100° and 140° (e.g. around 110°), between 220° and 260° (e.g. around 250°) and between 290° and 330° (e.g. around 300°), respectively, which can mainly be formed by wind loads in the direction of the oblique wind load WLD. It has been found that these four wind load peaks are closely related to the contour features on the front side portion 120 and the rear side portion 121 of the first side surface 104 and the second side surface 106, respectively (see e.g. Figure 3a ) of the radome 101. The front side portion 120 and the rear side portion 121 can be located on the front side and the rear side of the midline of each side surface 104, 106, respectively, e.g. near the two front and rear corners, respectively, which transition to the front surface 102 and the rear surface 103, respectively.

[0103] According to the embodiments of the present application, several side surface contour features of a radome are provided, which can help to manage an optimized omni-directional wind load distribution on a base station antenna 100. Here, by providing side surface contour features on the first side surface 104 and the second side surface 106 such that interference structures are formed on the front side portion 120 and the rear side portion 121, e.g. near the corners, the above-mentioned wind load peaks can be effectively reduced, which can be seen by the optimized omni-directional wind load distribution represented by the black line in Figure 17 By reducing the four local wind load peaks, the omni-directional wind load distribution can be further optimized, such that some worst case points are improved.

[0104] It should be understood that the various side surface contour features introduced in the different embodiments can be flexibly combined and adjusted as needed, without being limited to the specific embodiments described below.

[0105] Some embodiments of the present application will now be described in more detail with reference to the drawings.

[0106] With reference to Figure 3a and Figure 3b , a radome 101 of a wind load reducing base station antenna 100 according to a first embodiment of the present application is shown. Here, a combination of side surface contour features provided on the first side surface 104 and the second side surface 106 of the radome 101 for reducing wind load can be seen. In particular, reference is made to Figure 3bThe combination of side profile features on the second side surface 106 can comprise a first recess 130 provided on the front side portion 120 of the second side surface 106, which first recess 130 constitutes a first side profile feature here. The first recess 130 opens towards the outside of the second side surface 106 in the width direction W of the radome 101. The first recess 130 has two rectangular side recesses 131 (the openings of which are indicated by dashed lines) which both open towards the inside of the recess and towards each other in the thickness direction D of the radome 101, and a rectangular recess opening 132 which communicates to the outside of the radome 101, as seen in cross section. Thus, the first recess 130 can constitute a T-shaped slot, wherein the two rectangular side recesses 131 constitute the two sides of the head of the T-shaped slot, and the rectangular recess opening 132 constitutes the leg of the T-shaped slot. The leg of the T-shaped slot, or the rectangular recess opening 132, penetrates the wall section of the radome 101 and thus forms two mutually parallel step faces 133, which can be oriented transversely, here perpendicularly, to the second side surface 106, and which both intersect the second side surface 106 in two top edges 134. In the illustrated embodiment, the two step faces 133 and the two top edges 134 of the first recess 130 are opposite and not staggered in the width direction W of the radome 101. This T-shaped slot on the front side portion 120 of the second side surface 106, together with the two step faces 133 and the two top edges 134, can reduce the wind load peak in the range between 100° and 140°, for example around 110°, in the omni-directional wind load distribution (see Fig. 6), and thus increase the wind load in the range between 0° and 100°, for example around 0°, in the omni-directional wind load distribution (see Fig. 6). Figure 3b In the illustrated embodiment, the two step faces 133 and the two top edges 134 of the first recess 130 are opposite and not staggered in the width direction W of the radome 101. This T-shaped slot on the front side portion 120 of the second side surface 106, together with the two step faces 133 and the two top edges 134, can reduce the wind load peak in the range between 100° and 140°, for example around 110°, in the omni-directional wind load distribution (see Figure 17 ).

[0107] The combination of side profile features on the second side surface 106 can comprise a first recess 130 provided on the front side portion 120 of the second side surface 106, which first recess 130 constitutes a first side profile feature here. The first recess 130 opens towards the outside of the second side surface 106 in the width direction W of the radome 101. The first recess 130 has two rectangular side recesses 131 (the openings of which are indicated by dashed lines) which both open towards the inside of the recess and towards each other in the thickness direction D of the radome 101, and a rectangular recess opening 132 which communicates to the outside of the radome 101, as seen in cross section. Thus, the first recess 130 can constitute a T-shaped slot, wherein the two rectangular side recesses 131 constitute the two sides of the head of the T-shaped slot, and the rectangular recess opening 132 constitutes the leg of the T-shaped slot. The leg of the T-shaped slot, or the rectangular recess opening 132, penetrates the wall section of the radome 101 and thus forms two mutually parallel step faces 133, which can be oriented transversely, here perpendicularly, to the second side surface 106, and which both intersect the second side surface 106 in two top edges 134. In the illustrated embodiment, the two step faces 133 and the two top edges 134 of the first recess 130 are opposite and not staggered in the width direction W of the radome 101. This T-shaped slot on the front side portion 120 of the second side surface 106, together with the two step faces 133 and the two top edges 134, can reduce the wind load peak in the range between 100° and 140°, for example around 110°, in the omni-directional wind load distribution (see Fig. 6), and thus increase the wind load in the range between 0° and 100°, for example around 0°, in the omni-directional wind load distribution (see Fig. 6). Figure 3b In the illustrated embodiment, the two step faces 143 and the two top edges 144 of the second recess 140 are opposite and not staggered in the width direction W of the radome 101. See Figure 17The second groove 140 on the second side surface 106 together with the two step faces 143 and the two top edges 144 formed thereby can significantly reduce the wind load peaks in the omni-directional wind load distribution of the base station antenna 100 in the range between 30° and 70°, for example around 50° (from the red line shown to the black line shown).

[0108] In some embodiments, the two side profile features on the second side surface 106, here for example the first groove 130, 140, can extend continuously over the entire length L of the radome 101. In some embodiments, the two side profile features can extend continuously over a partial length of the radome 101. In some embodiments, the two side profile features can extend discontinuously over the entire length L or a partial length of the radome 101, that is to say a plurality of side profile features are arranged one after the other in the height direction L. The two side profile features can be integrally formed with the main body of the radome 101 by means of plastic extrusion, however it is also conceivable for the two side profile features to be produced in a separate step and for the separately produced two side profile features to be attached, for example bonded, to the main body of the radome 101.

[0109] Furthermore, the combination of side profile features on the first side surface 104 can be arranged with reference to the combination of side profile features on the second side surface 106 in order to reduce the wind load peaks in the range between 220° and 260°, for example around 250°, and between 290° and 330°, for example around 300° (from the red line shown to the black line shown). In some embodiments, the combination of side profile features on the first side surface 104 can be designed to be symmetrical about a longitudinal section plane parallel to the side surface to the combination of side profile features on the second side surface 106. In some embodiments, side profile features can also be arranged on the centre line of the side surface in order to reduce the wind load.

[0110] In Figure 4 the first variant of the radome according to Figure 3a and Figure 3b the two step faces 143 and the two top edges 144 of the second groove 140 are arranged offset to one another, for example by arranging the wall section of the second side surface 106 between the first groove 130 and the second groove 140 to be outwardly offset or higher than the wall section of the second side surface 106 in front of the first groove 130 and behind the second groove 140.

[0111] In Figure 5 the first variant of the radome according to Figure 3a and Figure 3bIn a second variant of the radome of the base station antenna 100, by way of example of the first side profile feature of the front side portion 120 on the second side surface 106, instead of the first recess 130 configured as a T-shaped groove, a first recess 130' configured as a dovetail groove can be provided. The dovetail groove has two triangular side recesses 131' (the openings of which are indicated by dashed lines) which open towards each other in the thickness direction D, each triangular side recess 131' has one inclined step face 132', and the two inclined step faces 132' are connected by a base face 133' which is parallel to the second side surface 106. The two inclined step faces 132' each intersect the second side surface 106 and thus each form a top edge 134'. Thus, the dovetail groove together with the inclined step faces 132' and the top edges 134' can reduce the wind load peak in the range between 100° and 140° (for example, around 110°) in the omnidirectional wind load distribution.

[0112] In some embodiments, as also shown in Figure 5 In some embodiments, as also shown in

[0113] The length of the insert 135' is here smaller than the first recess 130', so that a plurality of inserts 135' can be provided in the first recess 130' either successively in contact with each other or spaced apart. It is also conceivable to provide the same or similar side profile features for the rear side portion 121 on the second side surface 106 and for the first side surface 104.

[0114] In all examples introduced in the following, wherever a T-shaped groove is mentioned, a dovetail groove or another form of recess with side recesses can be provided instead, and it is conceivable to modify the insert interface accordingly to the recess for the form-locked connection.

[0115] Figures 6a to 6g A radome 101 of a base station antenna 100 according to a second embodiment of the application is shown. With reference to Figures 6a to 6c By way of example of the second side surface 106, in addition to the first recess 130 configured as a T-shaped groove, a second recess 140 configured as a dovetail groove can be provided. The second recess 140 has two triangular side recesses 141 which open towards each other in the thickness direction D, each triangular side recess 141 has one inclined step face 142, and the two inclined step faces 142 are connected by a base face 143 which is parallel to the second side surface 106. The two inclined step faces 142 each intersect the second side surface 106 and thus each form a top edge 144. Thus, the second recess 140 together with the inclined step faces 142 and the top edges 144 can reduce the wind load peak in the range between 100° and 140° (for example, around 110°) in the omnidirectional wind load distribution.Figure 3a and Figure 3b In addition to the T-slots 130 and 140 shown, a plurality of inserts 200 are also provided on the second side surface 106, these inserts 200 being attached to Figure 3a and Figure 3b The T-grooves 130 and 140 shown reduce the peak wind load in the omnidirectional wind load distribution. See also Figures 6d to 6g The exposed outline of the insert 200 on the second side surface 106 is constructed as a truncated sphere, thus having a dome-shaped truncated spherical surface 201 and a flat bottom surface 202. Two parallel T-shaped legs 203 are provided on the flat bottom surface 202. These two T-shaped legs 203, as fitting parts, are respectively fitted into corresponding T-shaped grooves 130 and 140 on the second side surface 106 in a form-locking manner, so that the flat bottom surface 202 of the insert 200 rests against the second side surface 106, while the truncated spherical surface 201 of the insert 200 is exposed outwards. See also Figure 6a The truncated spherical profile of each insert 200 extends from the front portion 120 through the centerline of the side surface to the rear portion 121. Therefore, the abrupt change in surface structure caused by the truncated spherical surface 201 at the front portion 120 can significantly reduce the peak wind load in the omnidirectional wind load distribution of the base station antenna 100 in the range of 100° to 140° (e.g., around 110°) (reduced from the red line to the black line). Similarly, the abrupt change in surface structure caused by the truncated spherical surface 201 at the rear portion 121 can additionally significantly reduce the peak wind load in the omnidirectional wind load distribution of the base station antenna 100 in the range of 30° to 70° (e.g., around 50°) (reduced from the red line to the black line). Figure 6a and Figure 6b In the illustrated embodiment, only three inserts 200 are shown on the second side surface 106; however, it is conceivable that any suitable number of inserts 200 may be provided as needed.

[0116] Figures 7a to 7c The radome 101 of the base station antenna 100 according to the third embodiment of this utility model is shown. See also Figures 7a to 7c Exemplarily shown are also provided on the front portion 120 and the rear portion 121 of the first side surface 104. Figure 3a and Figure 3b The T-slots 130 and 140 are shown in the diagram. Furthermore, inserts 300 are provided in the T-slots 130 and 140, which influence or reduce the peak wind load in the omnidirectional wind load distribution. The T-slots 130 and the inserts 300 together constitute a side profile feature. See also... Figure 7c, the insert 300 is configured substantially T-shaped in cross-section and has a T-shaped insert portion 301 for form-fittingly being inserted in the T-shaped slot 130 and a profile structure 302 arranged on the T-shaped insert portion 301. The T-shaped insert portion 301 is adapted to the shape of the T-shaped slot 130, i.e. the T-shaped insert portion 301 of the insert 300 can be form-fittingly inserted into the T-shaped slot 130. While the profile structure 302 protrudes from the T-shaped slot 130, 140, such that the profile structure 302 is higher than the first side surface 104. The profile structure 302 is here configured substantially as an integral part of a leg of the T-shaped insert portion 301, or as an extension of the leg, and as a rectangular bar, and thus has two step faces 303 and two top edges 304. See Figure 7a In the radome height direction L a plurality of successively arranged rectangular bars can be arranged on the same insert 300 or they can be arranged on a plurality of successively arranged inserts 300, with one or more rectangular bars on each insert 300. The profile structure 302 on the front side portion 120 of the first side surface 104 together with the two step faces 303 and the two top edges 304 formed thereby can significantly reduce the wind load peak in the omni-directional wind load distribution of the base station antenna 100 in the range between 220° and 260°, e.g. around 250°, from the wind load peak shown by the red line to the wind load peak shown by the black line. The second side profile feature on the rear side portion 121 can be identically arranged as the first side profile feature on the front side portion 120. The first side profile feature and the second side profile feature can be symmetrically configured with respect to a median plane perpendicular to the first side surface 104. The second side profile feature can reduce the wind load peak in the omni-directional wind load distribution in the range between 290° and 330°, e.g. around 300°.

[0117] Figures 8a to 8b The radome 101 of the base station antenna 100 according to a fourth embodiment of the present application is shown. The fourth embodiment can differ from the third embodiment shown in Figures 7a to 7c the third embodiment shown in the first embodiment only in the design of the profile structure of the insert. With the first side profile feature on the front side portion 120 on the first side surface 104 as an example, the profile structure 402 of the insert 400 of the fourth embodiment is configured as a plurality of successively arranged cylinders 403 in the radome height direction L connected on the T-shaped insert portion 401, which as the profile structure 402 can laterally protrude from the first slot 130 and thus protrude from the first side surface 104. Thus, the cylinder faces 404 of the cylinders 403 and the end edges 405 of the cylinders 403 can significantly reduce the wind load peak in the omni-directional wind load distribution of the base station antenna 100. The other aspects of the radome 101 of the base station antenna 100 according to the fourth embodiment are adapted to the radome 101 design or variants of the third embodiment, which are not described here again.

[0118] Figures 9a to 9b The radome 101 of the base station antenna 100 of the fifth embodiment of the present application is shown. The fifth embodiment can only differ from the third and fourth embodiments in the profile design of the insert. By way of example, the first side profile feature on the front side portion 120 on the first side surface 104, the profile 502 of the insert 500 of the fifth embodiment is configured to connect a plurality of right triangular prisms 503 arranged in succession in the radome height direction L on the T-shaped insert portion 501, which as the profile 502 can laterally protrude from the first side surface 104 in the first recess 130. Thus, the three prism faces 504 of the right triangular prisms 503 and the end edges 505 of the right triangular prisms 503 can significantly reduce the wind load peaks in the omnidirectional wind load distribution of the base station antenna 100. The other aspects of the radome 101 of the base station antenna 100 of the fifth embodiment are adapted with reference to the radome 101 design or variants of the third embodiment, which will not be described here again.

[0119] Figure 10 The radome 101 of the base station antenna 100 of the sixth embodiment of the present application is shown. The sixth embodiment can only differ from the third, fourth and fifth embodiments in the profile design of the insert. By way of example, the first side profile feature on the front side portion 120 on the first side surface 104, the profile 602 of the insert 600 of the sixth embodiment is configured to connect right quadrangular prisms 603 arranged in succession in the height direction L on the T-shaped insert portion 601, which as the profile 602 can laterally protrude from the first side surface 104 in the first recess 130. Thus, the four prism faces 604 of the right quadrangular prisms 603 and the end edges 605 of the right quadrangular prisms 603 can significantly reduce the wind load peaks in the omnidirectional wind load distribution of the base station antenna 100. The other aspects of the radome 101 of the base station antenna 100 of the sixth embodiment are adapted with reference to the radome 101 design or variants of the third embodiment, which will not be described here again.

[0120] Figures 11a to 11i The radome 101 of the base station antenna 100 of the seventh embodiment of the present application is shown. Here, the combination of side profile features for reducing the wind load on the first side surface 104 of the radome 101 is shown by way of example. In particular, reference is made to the first side profile feature on the front side portion 120, which can include a wider T-shaped groove 730 provided on the front side portion 120 of the first side surface 104, and the first side profile feature can also include a T-shaped insert 700 shown in more detail in Figure 11a Figures 11f to 11i which can be inserted into the T-shaped groove 730. Reference is made to Figures 11f to 11i ​The T-shaped insert 700 has a tab 701 and a profile structure 702 arranged on the tab 701. The profile structure 702 is configured as a washboard and has a plurality of toothed sections 703 extending parallel to the height direction L of the radome 101. In particular, referring to the side view shown in Figure 11b and Figure 11e , the toothed sections 703 at least partially protrude from the first side surface 104 in the T-shaped groove 730. Each toothed section 703 has a step face 704 inclined to the first side surface 104 and a step face 705 perpendicular to the first side surface 104, and a horizontal face 706 connecting the step face 704 and the step face 705. The step face 704 and the step face 705 respectively intersect with the horizontal face 706, thereby forming a top edge 707 and a top edge 708. The step face 704 and the step face 705 and the top edge 707 and the top edge 708 can reduce the wind load peak in the range between 220° and 260° (e.g. around 250°) in the omnidirectional wind load distribution.

[0121] Referring to Figure 11a , the side profile feature combination can include a second side profile feature arranged on the rear side portion 121 of the first side surface 104. The first side profile feature and the second side profile feature can be identically arranged to each other and can be mirror-symmetrically configured with respect to a middle plane perpendicular to the first side surface 104. The second side profile feature of the first side surface 104 can reduce the wind load peak in the range between 290° and 330° (e.g. around 300°) in the omnidirectional wind load distribution.

[0122] Figures 12a to 12e A variant of the radome 101 of the base station antenna 100 of the seventh embodiment is shown. The seventh embodiment is basically identical to the sixth embodiment, but differs in that, in particular, referring to the side view shown in Figure 12b and Figure 12e , the toothed sections 703' of the profile structure 702' on the tab 701' of the insert 700' do not extend outward beyond the T-shaped groove 730' or the first side surface 104, that is, the horizontal face 706' of the toothed sections 703' does not protrude beyond the first side surface 104. Referring to Figure 12b , the horizontal face 706' is flush with the first side surface 104. However, as in the sixth embodiment, the step face 704' and the step face 705' and the top edge 707' and the top edge 708' can still reduce the wind load peak in the omnidirectional wind load distribution.

[0123] Figures 13a to 13iThe radome 101 of the base station antenna 100 according to the eighth embodiment of the present invention is shown. The difference between the radome 101 of the base station antenna 100 of the seventh embodiment and the radome 101 of the seventh embodiment lies in the different contour structure 802 of the T-shaped insert 800 connecting to the insert portion 801. In the eighth embodiment, the contour structure 802 is also constructed in a washboard shape, but has a plurality of toothed portions 803 extending perpendicular to the height direction L of the radome 101. Each toothed portion 803 has two inclined surfaces 804 extending at an angle to the first side surface 104, which intersect at the top edge 805. Each toothed portion 803 here at least partially extends beyond the outer surface of the first side surface 104 (see especially...). Figure 13b The two slopes 804 and the top edge 805 can reduce the peak wind load in the omnidirectional wind load distribution. Other aspects of the radome 101 of the base station antenna 100 of the eighth embodiment are adapted to the design or variation of the radome 101 of the seventh embodiment, and will not be described in detail here.

[0124] Figures 14a to 14e A variation of the radome 101 of the base station antenna 100 according to the eighth embodiment is shown. (Compared to...) Figures 13a to 13i The only difference in the radome 101 shown is that the toothed portion 803' of the contour structure 802' of the T-shaped insert 800', which connects to the insert portion 801', does not extend outward beyond the T-slot 830', or the first side surface 104. Each toothed portion 803' has two inclined surfaces 804' extending at an angle to the first side surface 104, which intersect at a top edge 805'. The top edge 805' of the toothed portion 803' does not extend beyond the first side surface 104 (see especially...). Figure 14b and Figure 14e See also Figure 14b The top edge 805' is flush with the first side surface 104.

[0125] Figures 15a to 15i The diagram shows the radome 101 of the base station antenna 100 according to the ninth embodiment of the present invention. Unlike the previous embodiments, the contour structure 902 on the fitting portion 901 of the T-shaped insert 900 in the ninth embodiment is designed differently. The contour structure 902 has a plurality of successively arranged ribs 903, each rib 903 extending obliquely in the height direction L of the radome 101. See also... Figure 15d The adjacent ribs 903 are arranged end-to-end, thus forming a roughly V-shaped structure. See also Figure 15e Each rib 903 extends at least partially beyond the T-slot 930, or the first side surface 104. The arrangement of the ribs 903 can reduce the peak wind load in an omnidirectional wind load distribution. Other aspects of the radome 101 of the base station antenna 100 of the ninth embodiment are adapted to the design or modification of the radome 101 of the above embodiments, and will not be described again here.

[0126] Figures 16a to 16e A variant of the radome 101 of the base station antenna 100 of the ninth embodiment is shown. The differences to the radome 101 shown in Fig. 9 are only that the ribs 903' of the profile structure 902' connected to the T-shaped insert part 900' do not extend beyond the T-shaped groove 930' or the first side surface 104, respectively (see in particular Figures 15a to 15i Figure 16e The upper top edge of the ribs 903' is flush with the first side surface 104. Figure 16b

[0127] It is further conceivable that any combination of the side profile features defined by the above embodiments or variants thereof can be provided on the first side surface 104 and / or the second side surface 106 of the same radome 101, respectively.

[0128] The present utility model can include any feature or combination of features or generalization thereof implicitly or explicitly disclosed herein and is not limited to any of the above listed defined ranges. Any element, feature and / or structural arrangement described herein can be combined in any suitable manner.

[0129] The specific embodiments disclosed above are only exemplary, as it is apparent to those skilled in the art who benefit from the teachings herein that the present utility model can be modified and practiced in various but equivalent ways. It is therefore apparent that changes and modifications can be made to the above disclosed specific embodiments and that all such changes and modifications are considered to be within the scope of and falling within the spirit of the present utility model.​​

Claims

1. A radome for a base station antenna, characterized by, The radome has opposite front and rear surfaces and opposite first and second side surfaces, which are connected to form a circumferential radome, wherein at least one of the first and second side surfaces has at least one side profile feature for reducing wind loading, wherein the side profile feature comprises at least one groove extending in the height direction of the radome, which groove opens out in the width direction of the radome towards the outside of the at least one side surface, and which groove is provided laterally with at least one side recess, which side recess opens out in the thickness direction of the radome towards the inside of the groove.

2. A radome for a base station antenna according to claim 1, characterised in that, The groove comprises at least one of a dovetail groove and a T-shaped groove.

3. The radome for a base station antenna according to claim 1, characterized by The groove has two step faces at its opening, which face towards each other, and which are aligned or offset in the width direction of the radome with respect to each other.

4. The radome for a base station antenna according to claim 1, characterized by The side profile feature further comprises at least one insert, which can be fixed in the groove, the insert having an insertion portion and a profile structure for reducing wind loading, which is connected to the insertion portion, the insert being able to be inserted in the groove in a form-locking manner with its insertion portion.

5. A radome for a base station antenna according to claim 4, characterised in that, The profile structure of the insert is flush with or at least partially projects beyond the at least one side surface.

6. The radome for a base station antenna according to claim 4, wherein The insert comprises a truncated sphere as its profile structure, which has a base surface facing the at least one side surface and a truncated sphere surface facing away from the at least one side surface.

7. A radome for a base station antenna according to claim 6, characterised in that, At least two legs are arranged one after the other in the thickness direction of the radome on the truncated sphere, and the truncated sphere extends past the midline of the at least one side surface in the thickness direction of the radome.

8. The radome for a base station antenna according to claim 4, characterized by The profile structure of the insert comprises a plurality of columns and / or ribs arranged one after the other in the height direction of the radome.

9. A radome for a base station antenna according to claim 8, characterised in that, The columns comprise prismatic and / or cylindrical columns.

10. The radome for a base station antenna according to claim 8, wherein Adjacent ribs are inclined with respect to each other and are arranged end to end.

11. The radome for a base station antenna according to claim 4, characterized by The profile structure of the insert comprises at least one tooth, which extends parallel to or perpendicularly to or obliquely to the height direction of the radome.

12. The radome for a base station antenna according to claim 11, wherein The profile structure of the insert comprises a plurality of teeth arranged one after the other.

13. The radome for a base station antenna according to claim 11, wherein The tooth comprises two inclined surfaces intersecting each other; or the tooth comprises one oblique surface, one perpendicular surface and a horizontal surface connecting the two.

14. The radome for a base station antenna according to claim 4, characterized by A plurality of inserts are arranged one after the other in the groove.

15. The radome for a base station antenna according to claim 1, wherein The side profile feature is arranged on the front and / or rear side of the at least one side surface.

16. A base station antenna, comprising: The base station antenna has a radome for a base station antenna according to any one of claims 1 to 15, which is covered at both ends by a top end cap and a bottom end cap.

Images