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 opposite, and the first side surface and the second side surface are opposite and are connected to form a surrounding antenna housing. The first side surface and the second side surface are respectively provided with a middle section, a front side section arranged on the front side of the middle section and a rear side section arranged on the rear side of the middle section, and at least one side surface of the first side surface and the second side surface is provided with a combined side surface contour feature for reducing the wind load. The combined side contour features include a first side contour feature disposed on the front side section and a second side contour feature disposed on the rear side section, where the first side contour feature and the second side contour feature are different from each other. Therefore, 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, which 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 at providing a radome for base station antenna and a base station antenna, by means of which at least one of the above technical problems existing in the prior art can be solved.

[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 circumferential radome, the first and second side surfaces each have a middle section, a front side section arranged in front of the middle section, and a rear side section arranged behind the middle section,

[0006] Among them, at least one of the first and second side surfaces has a combined side profile feature for reducing wind load, the combined side profile feature includes a first side profile feature arranged on the front side section and a second side profile feature arranged on the rear side section, wherein the first and second side profile features are different from each other.

[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, optimizing the omnidirectional wind load distribution on the base station antenna.

[0008] Advantageously, the first side profile feature has a first number of stepped risers, the second side profile feature has a second number of stepped risers different from the first number, and each stepped riser is arranged transversely to the at least one side surface.

[0009] Advantageously, the step risings are formed by protruding structures protruding from the at least one side surface, which are formed by a wall thickening of the radome and / or by wall sections of the radome which are offset to each other and / or by attachments attached to the wall of the radome.

[0010] Advantageously, one of the first and second side profile features has a first step rising and the other side profile feature has a second step rising and a third step rising.

[0011] Advantageously, the first step rising is arranged towards or away from the middle section and the second and third step risings are arranged opposite to each other.

[0012] Advantageously, the first step rising is formed by a first protruding structure away from the middle section and the second and third step risings are formed by two opposite sides of a second protruding structure configured as a rib.

[0013] Advantageously, the first step rising is formed by a first side of a first protruding structure extending through the middle section, one of the second and third step risings is formed by a first side of a second protruding structure configured as a rib and the other of the second and third step risings is formed by a second side of the first protruding structure and a second side of the second protruding structure.

[0014] Advantageously, the at least one step rising extends continuously or discontinuously over at least a part of the length of the at least one side surface.

[0015] Advantageously, the at least one step rising extends planarly parallel to a width direction of the radome or planarly inclined to the width direction of the radome or is configured as a circular arc.

[0016] 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, which is covered at both ends by a top end cap and a bottom end cap.

[0017] 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

[0018] The application will be further described with reference to the drawings and embodiments, in which:

[0019] Figure 1 a is a schematic view of the mounting of a known base station antenna on a guyed mast;

[0020] Figure 1 b is a schematic front perspective view of a known base station antenna;

[0021] Figure 1 c is a schematic top view of a known base station antenna;

[0022] Figure 2 is a schematic view of different wind load directions on a base station antenna;

[0023] Figure 3 is a schematic perspective view of a radome for a base station antenna according to a first embodiment of the present application and a partial enlarged view thereof;

[0024] Figure 4 is a partial enlarged perspective view of a radome according to Figure 3 ;

[0025] Figure 5 is another partial enlarged perspective view of a radome according to Figure 3 ;

[0026] Figure 6 is a partial enlarged cross-sectional view of a radome according to Figure 3 and a partial enlarged view at a side profile feature;

[0027] Figure 7a is a first variant of a radome according to Figure 6 ;

[0028] Figure 7b is a second variant of a radome according to Figure 6 ;

[0029] Figure 7c is a third variant of a radome according to Figure 6 ;

[0030] Figure 7d is a fourth variant of a radome according to Figure 6 ;

[0031] Figure 8 is a schematic perspective view of a radome for a base station antenna according to a second embodiment of the present application and a partial enlarged view thereof;

[0032] Figure 9 is a partial enlarged perspective view of a radome according to Figure 8 ;

[0033] Figure 10 is another partial enlarged perspective view of a radome according to Figure 8 ;

[0034] Figure 11 is a partial enlarged cross-sectional view of a radome according to Figure 8a partial enlarged lateral cross-sectional view of the radome and a partial enlarged view of the side profile feature;

[0035] Figure 12a is according to Figure 11 a first variant of the radome;

[0036] Figure 12b is according to Figure 11 a second variant of the radome;

[0037] Figure 12c is according to Figure 11 a third variant of the radome;

[0038] Figure 12d is according to Figure 11 a fourth variant of the radome; and

[0039] Figure 13 is a 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

[0040] 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 a multitude of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are meant to provide a more complete disclosure of the present application and to provide a better understanding of 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 to provide additional embodiments.

[0041] It should be understood that in all the drawings, the same reference numbers refer to the same elements. In the drawings, the dimensions of certain features can be distorted for the sake of clarity.

[0042] It should be understood that the language used in the specification is only used to describe particular embodiments and is not intended to limit the present application. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, well-known functions or constructions can not be described in detail.

[0043] 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 "containing" or "containing" do not exclude the presence of one or more additional features. As used in the specification and in the claims, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used in the specification and in the claims, the terms "between" and "between about" shall be interpreted to 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".

[0044] In the specification, when an element is referred to as being "on", "attached to", "connected to", "coupled to", or "contacting" another element, it can be directly on, attached to, connected to, coupled to, or contacting 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 to", "directly connected to", "directly coupled to", or "directly contacting" another element, there are no intervening elements present. In the specification, an element is arranged "adjacent" to another element can mean that the element has a portion that overlaps the adjacent element or a portion that is above or below the adjacent element.

[0045] In the specification, spatially relative terms such as "upper", "lower", "left", "right", "front", "back", "horizontal", "vertical", and the like can be used to describe one element's relationship to another element in the drawings. It will be understood that the 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 inverted from the orientation depicted in the drawings, a feature that is described as being "below" another feature in the drawings can be described as being "above" the other feature in the inverted orientation. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors will be interpreted accordingly.

[0046] Figure 1 a A known base station antenna 100 is shown in a fixed mounting state on a guyed mast 200, i.e. the base station antenna 100 can be fixed on the guyed mast via two fixed devices 300 arranged one above the other.

[0047] The base station antenna 100 is typically mounted in a vertical manner, with reference to Figure 1 bWhen 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.

[0048] 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 L, a width W, and a thickness D.

[0049] 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, for example, 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.

[0050] 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 Figure 2 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 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.

[0051] 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, for example, Figure 13As can be seen from the omnidirectional wind load distribution for the existing base station antenna 100 represented by the black line, four wind load peaks or high wind load regions 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°), 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 of the front side section 120 and the rear side section 121 of the first side surface 104 and the second side surface 106 of the radome 101 near the corners. Between the front side section 120 and the rear side section 121, an intermediate section 122 is formed.

[0052] According to the embodiments of the present application, several side surface contour features are provided, which can help to manage an optimized omnidirectional wind load distribution on the 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 section 120 and the rear side section 121 near the corners, the above-mentioned wind load peaks can be effectively reduced, which can be seen from the optimized omnidirectional wind load distribution represented by the black line in Figure 13 By reducing the four local wind load peaks, the omnidirectional wind load distribution can be further optimized, so that some worst-case points are improved.

[0053] It should be understood that the various side surface contour features described in the different embodiments can be flexibly combined and adjusted as needed, and are not limited to the specific embodiments described below.

[0054] Some embodiments of the present application will now be described in more detail with reference to the accompanying drawings.

[0055] Referring to Figures 3 to 6 , a radome 101 of a wind load reducing base station antenna 100 according to a first embodiment of the present application is shown. Here, the combined side surface contour features provided on the second side surface 106 of the radome 101 for reducing wind load can be seen. In particular, reference is made to Figures 4 to 6The combined side profile feature can comprise a step on the front side section 120 of the second side surface 106 near the corner to the front surface 102, the step having a first step riser 130 as the first side profile feature or as a part thereof, which first step riser 130 can contribute to a wind load peak in the omni-directional wind load distribution in a range between 100° and 140°, for example around 110°. The first step riser 130 can be oriented away from the front surface 102. Thus, the first step riser 130 can be formed by a first protruding structure 140 in front of it protruding from the second side surface 106 or the intermediate section 122, in particular by a transition face of the first protruding structure 140 transitioning into the intermediate section 122. The first protruding structure 140 can be formed as a material thickening of the radome 101 itself, or it can also be conceivable to be formed by a separate attachment piece fixed, for example glued, on the second side surface 106, or by a combination of both. In further embodiments not shown, the first protruding structure 140 can be formed by a lateral inward staggering of the wall sections of the radome 101, in which case the thickness of the wall sections staggered laterally inwards can remain constant. The outer surface of the first protruding structure 140 can here be formed as a slope (see Figure 6 ), or the first protruding structure 140 gradually thickens from the front to the back towards the step riser. The outer surface of the first protruding structure 140 intersects the first step riser 130 at a top edge 131 of the first step riser 130. It has been experimentally verified that the first step riser 130 and its top edge 131 have a significant effect on reducing the wind load. See Figure 13 , the first step riser 130 and its top edge 131 on the second side surface 106 significantly reduce the wind load peak in the omni-directional wind load distribution of the base station antenna 100 in a range between 100° and 140°, for example around 110° (from the red line shown to the black line shown).

[0056] The combined side profile feature on the second side surface 106 can further comprise two opposing steps on the rear side section 121 of the second side surface 106 proximate to the corner to the rear surface 103, which form two opposing step risers 132, 133 as the second side profile feature or as part thereof, namely a second step riser 132 oriented towards the front surface 102 and a third step riser 133 oriented towards the rear surface 103. The second and third step risers 132, 133 can be realized by one and the same second protruding structure 141 protruding laterally from the second side surface 106 or from the middle section 122 thereof. The second protruding structure 141 can here be constituted by an elongated rib. Therein, the second step riser 132 can be formed by the transition of the rib to the middle section 122, and the third step riser 133 can be formed by the transition of the rib to the rear side section 121. The rib can be constituted by a material thickening of the radome 101 itself, or it can also be conceivable to be formed by a separate attachment piece which is fixed, e.g. glued, to the second side surface 106, or by a combination of both. Again, the outer surface of the rib intersects the second and third step risers 132, 133 at the top edges 131 of the second and third step risers 132, 133. It has been experimentally verified that the second and third step risers 132, 133 and their top edges 131 have a significant effect on reducing wind loads. See Figure 13 The second and third step risers 132, 133 and their top edges 131 on the second side surface 106 can significantly reduce the wind load peak in the omni-directional wind load distribution of the base station antenna 100 in the range between 30° and 70°, e.g. around 50°, from the red line shown to the black line shown.

[0057] In some embodiments, the first protruding structure 140 and / or the second protruding structure 141 and thus the first, second and / or third step risers 130, 132, 133 can continuously extend over the entire length L of the radome 101. In some embodiments, the first protruding structure 140 and / or the second protruding structure 141 and thus the first, second and / or third step risers 130, 132, 133 can continuously extend over a partial length of the radome 101. In some embodiments, the first protruding structure 140 and / or the second protruding structure 141 and thus the first, second and / or third step risers 130, 132, 133 can discontinuously extend over the entire length L or the partial length of the radome 101, i.e. a plurality of first protruding structures 140 and / or second protruding structures 141 and thus first, second and / or third step risers 130, 132, 133 are arranged successively in length direction.

[0058] In some embodiments, the heights of the first, second, and / or third stepped rising surfaces 130, 132, 133 can be between 0.5 mm and 4 mm. In some embodiments, the width of the ribs can be between 1 mm and 15 mm. It should be understood that the corresponding design parameters can be adjusted according to the actual application scenario.

[0059] The first, second, and third stepped surfaces 130, 132, and 133 can be constructed perpendicular to the plane of the intermediate section 122, that is, they can extend parallel to the width direction of the radome 101.

[0060] exist Figure 7a In the first variant of the first embodiment shown, the first, second, and third step surfaces 130, 132, and 133 can be configured as concave arcs, while other structures can remain unchanged.

[0061] exist Figure 7b In the second variation of the first embodiment shown, the first, second, and third stepped rising surfaces 130, 132, and 133 can be inclined to the middle section 122 and can form an obtuse angle with the second side surface 106, while other structures can remain unchanged.

[0062] exist Figure 7c In the third variation of the first embodiment shown, the first, second, and third step surfaces 130, 132, and 133 can be configured as convex arcs, while other structures can remain unchanged.

[0063] exist Figure 7d In the fourth variant of the first embodiment shown, the first, second, and third stepped surfaces 130, 132, and 133 can be inclined to the middle section 122 and can form an acute angle with the second side surface 106, while other structures can remain unchanged.

[0064] In some implementations, the first, second, and third stepped surfaces 130, 132, and 133 can be any combination of all the above shapes.

[0065] In some embodiments, the first protruding structure 140 and the second protruding structure 141 on the second side surface 106 can be interchanged, or mirror-faced interchanged.

[0066] Furthermore, the combined side profile feature on the first side surface 104 can be arranged with reference to the combined side profile feature on the second side surface 106 to reduce the wind load peak 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 combined side profile feature on the first side surface 104 can be designed to be symmetrical with respect to the longitudinal section plane parallel to the side surface to the combined side profile feature on the second side surface 106. In some embodiments, the first side surface 104 and the second side surface 106 can be arranged oppositely in terms of the position of the first protruding structure 140 and the second protruding structure 141.

[0067] Referring to Figures 8 to 11 a radome 101 of a base station antenna 100 according to a second embodiment of the present application is shown. Here, the combined side profile feature arranged for reducing the wind load on the second side surface 106 of the radome 101 can be seen. In particular, referring to Figure 9 and Figure 10 the combined side profile feature can comprise a step on the front side section 120 of the second side surface 106 near the corner to the front surface 102, the step having a first step riser 130 as a first side profile feature or part thereof, which can affect the wind load peak in the range between 100° and 140°, for example around 110°, in the omnidirectional wind load distribution. The first step riser 130 can be oriented towards the front surface 102. Thus, the first step riser 130 can be formed by a first protruding structure 140 protruding from the second side surface 106 or rather the front side section 120 behind it, in particular by the transition face of the first protruding structure 140 transitioning into the front side section 120. The first protruding structure 140 can extend over the entire middle section 122. The first protruding structure 140 can be formed as a material thickening of the radome 101 itself or can also be formed by a separate attachment piece fixed, for example bonded, to the second side surface 106 or by a combination of both. In other embodiments not shown, the first protruding structure 140 can be formed by a lateral outward staggering of the wall sections of the radome 101, in which case the thickness of the wall sections staggered with respect to each other can remain constant. The outer surface of the first protruding structure 140 intersects the first step riser 130 at the top edge 131 of the first step riser 130. It has been experimentally verified that the first step riser 130 and its top edge 131 have a significant effect on reducing the wind load. Referring to Figure 13The first step-up 130 on the second side surface 106 and its top edge 131 can significantly reduce the wind load peak in the range between 100° and 140° (e.g. around 110°) in the omni-directional wind load distribution of the base station antenna 100 (from the red line shown to the black line shown).

[0068] The combined side profile feature on the second side surface 106 can further comprise two opposite steps on a rear side section 121 of the second side surface 106 close to the corner to the rear surface 103, which form two opposite step-ups 132, 133 as the second side profile feature or a part thereof, i.e. a second step-up 132 oriented towards the front surface 102 and a third step-up 133 oriented towards the rear surface 103. The second and third step-ups 132, 133 can be realized by one and the same second protruding structure 141 protruding laterally from the middle section 122. The second protruding structure 141 can be adjacent to and laterally protruding from the first protruding structure 140. In other words, the second protruding structure 141 can be arranged in a stack adjacent to the first protruding structure 140. The rear side of the second protruding structure 141 and the first protruding structure 140 can be arranged flush. The width of the second protruding structure 141 can be smaller than the first protruding structure 140, and the second protruding structure 141 can be configured as an elongated rib. The second step-up 132 can be formed by the transition of the rib to the middle section 122 or the first protruding structure 140, and the third step-up 133 can be formed by the transition of the rib to the rear side section 121. In other words, the second step-up 132 can be formed by the front side of the second protruding structure 141 (i.e. the rib), and the third step-up 133 can be formed by the rear side of the first protruding structure 140 and the second protruding structure 141 (i.e. the rib) together. Thus, the height of the second step-up 132 can be smaller than the height of the third step-up 133. The rib can be configured as a material thickening of the radome 101 itself, or it can also be conceivable to be formed by a separate attachment piece fixed, e.g. glued, to the second side surface 106, or by a combination of both. Also, the outer surface of the rib can intersect the second and third step-ups 132, 133 at the top edges 131 of the second and third step-ups 132, 133. It has been experimentally verified that the second and third step-ups 132, 133 on the second side surface 106 and their top edges 131 have a significant effect on reducing the wind load. See Figure 13 The second and third step-ups 132, 133 on the second side surface 106 and their top edges 131 can significantly reduce the wind load peak in the range between 30° and 70° (e.g. around 50°) in the omni-directional wind load distribution of the base station antenna 100 (from the red line shown to the black line shown).

[0069] In some embodiments, the first protruding structure 140 and / or the second protruding structure 141 and thus the first, second and / or third stepped riser 130, 132, 133 can continuously extend over the entire length L of the radome 101. In some embodiments, the first protruding structure 140 and / or the second protruding structure 141 and thus the first, second and / or third stepped riser 130, 132, 133 can continuously extend over a partial length of the radome 101. In some embodiments, the first protruding structure 140 and / or the second protruding structure 141 and thus the first, second and / or third stepped riser 130, 132, 133 can discontinuously extend over the entire length L or the partial length of the radome 101, i.e. a plurality of first protruding structures 140 and / or second protruding structures 141 and thus first, second and / or third stepped risers 130, 132, 133 are arranged successively in the length direction.

[0070] In some embodiments, the height of the first, second and / or third stepped riser 130, 132, 133 can be between 0.5 mm and 4 mm. In some embodiments, the width of the rib can be between 1 mm and 15 mm. It should be understood that the respective design parameters can be adjusted according to the actual application scenario.

[0071] The first, second and third stepped riser 130, 132, 133 can here be formed planarly perpendicular to the intermediate section 122, i.e. can extend parallel to the width direction of the radome 101.

[0072] In Figure 12a In a first variant of the first embodiment shown, the first, second and third stepped riser 130, 132, 133 can be formed as concave circular arcs, while the other structures can remain unchanged.

[0073] In Figure 12b In a second variant of the first embodiment shown, the first, second and third stepped riser 130, 132, 133 can be formed inclined to the intermediate section 122 and can form an obtuse angle with the second side surface 106, while the other structures can remain unchanged.

[0074] In Figure 12c In a third variant of the first embodiment shown, the first, second and third stepped riser 130, 132, 133 can be formed as convex circular arcs, while the other structures can remain unchanged.

[0075] In Figure 12d In a fourth variant of the first embodiment shown, the first, second and third stepped riser 130, 132, 133 can be formed inclined to the intermediate section 122 and can form an acute angle with the second side surface 106, while the other structures can remain unchanged.

[0076] Similarly, for the second embodiment, in some embodiments, the first, second and third step risers 130, 132, 133 can be any combination of all the shapes above.

[0077] In some embodiments, the first and second protruding structures 140, 141 on the second side surface 106 can be interchanged, or in other words mirror image of each other.

[0078] Further, the combined side profile features on the first side surface 104 can be arranged in reference to the combined side profile features on the second side surface 106 to reduce the wind load peaks at positions between 220° and 260° (e.g. around 250°) and between 290° and 330° (e.g. around 300°) (from the red line shown to the black line shown). In some embodiments, the combined side profile features on the first side surface 104 can be designed to be symmetrical about a longitudinal plane parallel to the side surface with the combined side profile features on the second side surface 106. In some embodiments, the first and second side surfaces 104, 106 can be arranged oppositely in terms of the positions of the first and second protruding structures 140, 141.

[0079] It is further contemplated that any combination of the side profile features defined by the first embodiment or its variants and the second embodiment or its variants can be arranged on the first and second side surfaces 104, 106 of the same radome 101, respectively.

[0080] The present application can include any feature or combination of features or generalizations thereof implicitly or explicitly disclosed herein and is not limited to any of the specific embodiments described above. Any element, feature or structural arrangement described herein can be combined in any suitable manner.

[0081] The specific embodiments disclosed above are only exemplary, as it is apparent to those skilled in the art that upon the benefit of the teaching of this document, modifications and implementations of the present application in different but equivalent ways can be made. It is therefore apparent that modifications and alterations of the specific embodiments disclosed above can be made and all such modifications are considered to be within the scope and spirit of the present application.

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, the first and second side surfaces each having a middle section, a front side section arranged in front of the middle section and a rear side section arranged behind the middle section, wherein at least one of the first and second side surfaces has a combined side profile feature for reducing wind loads, the combined side profile feature comprising a first side profile feature arranged on the front side section and a second side profile feature arranged on the rear side section, wherein the first and second side profile features are different from each other.

2. A radome for a base station antenna according to claim 1, characterised in that, The first side profile feature has a first number of step risers and the second side profile feature has a second number of step risers different from the first number, each step riser being arranged transversely to the at least one side surface.

3. A radome for a base station antenna according to claim 2, characterised in that, The step risers are each formed by a protruding structure protruding from the at least one side surface, the protruding structure being formed by a wall thickening of the radome and / or by wall sections of the radome which are offset from each other and / or by an attachment piece attached to a wall of the radome.

4. The radome for a base station antenna according to claim 2, wherein One of the first and second side profile features has a first step riser and the other side profile feature has a second step riser and a third step riser.

5. A radome for a base station antenna according to claim 4, characterised in that, The first step riser is arranged towards or away from the middle section and the second and third step risers are arranged opposite each other.

6. The radome for a base station antenna according to claim 4, wherein The first step riser is formed by a first protruding structure which is remote from the middle section and the second and third step risers are formed by two opposite sides of a second protruding structure which is formed as a rib.

7. The radome for a base station antenna according to claim 4, wherein The first step riser is formed by a first side of a first protruding structure which extends past the middle section, one of the second and third step risers is formed by a first side of a second protruding structure which is formed as a rib, and the other of the second and third step risers is formed jointly by a second side of the first protruding structure and a second side of the second protruding structure.

8. The radome for a base station antenna according to claim 2, wherein At least one step riser extends continuously or discontinuously over at least a partial length of the at least one side surface.

9. The radome for a base station antenna according to claim 2, wherein At least one step riser extends planarly parallel to a width direction of the radome or planarly inclined to the width direction of the radome or is formed as a circular arc.

10. 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 9, the radome being covered at both ends by a top end cap and a bottom end cap.

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