Antenna

Abstract

The invention discloses an antenna. The antenna comprises a reflecting plate and an antenna array, wherein the reflecting plate comprises a top plate and a bottom plate, and the included angle between the top plate and the bottom plate is a preset angle; the antenna array is arranged on the top plate and the bottom plate.

Description

Technical Field

[0001] The present application belongs to the field of antenna technology, and specifically relates to an antenna. Background Art

[0002] In order to solve the problem of high-rise buildings with dense distribution, serious signal attenuation or beyond the coverage of macro base stations, two signal coverage solutions are generally adopted: indoor external introduction and ordinary passive indoor introduction. Among them, vertical large-angle spotlight antenna is recommended for indoor external introduction. Depending on the installation position of the antenna, the coverage methods of indoor external introduction usually include: antenna down coverage, antenna up coverage, and antenna up and down combined coverage, such as Figure 1a , Figure 1b as well as Figure 1c The antenna down coverage method has a better coverage effect on high-rise areas, the antenna up coverage method has a better coverage effect on low-rise areas, and the antenna up and down combined coverage method has the advantages of both.

[0003] However, the antenna-up coverage method requires the deployment of spotlight antennas on the ground, surrounding lamp poles or appropriate locations on the building. The concealment of spotlight antennas deployed on the ground or surrounding lamp poles is relatively poor, with severe obstruction and difficulty in site selection. It is also easily affected by the activities of surrounding people and the environment, resulting in a reduced lifespan of the spotlight antennas. Deploying spotlight antennas on the building, such as above the unit door or on the waistline of the building, makes the operation relatively difficult for maintenance personnel. When the antenna-down coverage method is used to install spotlight antennas on the roof of a high-rise building, the antennas all generate symmetrical beams on the vertical plane. The different propagation losses on the upper and lower floors will lead to uneven coverage of the upper and lower floors and poor coverage on the bottom and edge floors. Summary of the invention

[0004] An embodiment of the present application provides an antenna that can solve the problem of uneven coverage of upper and lower floors and poor coverage of the bottom and edge floors caused by different propagation losses of the beam generated by the antenna installed on the roof of a building on the upper and lower floors.

[0005] In a first aspect, an embodiment of the present application provides an antenna, comprising: a reflector, and an antenna array; wherein the reflector comprises a top plate and a bottom plate, and the angle between the top plate and the bottom plate is a preset angle; and the antenna array is arranged on the top plate and the bottom plate.

[0006] The antenna provided in the embodiment of the present application includes a reflector and an antenna array, wherein the reflector is composed of a top plate and a bottom plate, and the angle between the top plate and the bottom plate is a preset angle, and the antenna array is arranged on the top plate and the bottom plate. Thus, when the antenna is installed on the roof of a high-rise building, the beam generated by the antenna array on the top plate and the beam generated by the antenna array on the bottom plate together form the beam of the entire antenna, which can effectively cover the bottom and edge floors of the high-rise building, and evenly cover the upper and lower floors. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1a is a schematic diagram of a beam coverage range in the related art;

[0008] Figure 1b is a schematic diagram of another beam coverage in the related art;

[0009] Figure 1c is a schematic diagram of another beam coverage in the related art;

[0010] Figure 2 is a schematic diagram of a beam coverage range of an antenna provided in an embodiment of the present application;

[0011] Figure 3 is a structural schematic diagram of an antenna provided in an embodiment of the present application;

[0012] Figure 4a It is an angle schematic diagram of an antenna provided in an embodiment of the present application that propagates beams at multiple different angles;

[0013] Figure 4b It is a schematic diagram of the distance of an antenna propagating beams at multiple different angles provided by an embodiment of the present application;

[0014] Figure 4c is a cross-sectional schematic diagram of a beam width of an antenna provided in an embodiment of the present application;

[0015] Figure 4d is a cross-sectional schematic diagram of the beam width of another antenna provided in an embodiment of the present application;

[0016] Figure 4e is a cross-sectional schematic diagram of the beam width of another antenna provided in an embodiment of the present application;

[0017] Figure 4f is a cross-sectional schematic diagram of the beam width of another antenna provided in an embodiment of the present application;

[0018] Figure 4g is a cross-sectional schematic diagram of the beam width of another antenna provided in an embodiment of the present application;

[0019] Figure 5is a side view of an antenna provided in an embodiment of the present application;

[0020] Figure 6a is a schematic diagram of an antenna array in the related art;

[0021] Figure 6b is a schematic diagram of another antenna array in the related art;

[0022] Figure 7a is a schematic diagram of an antenna array provided in an embodiment of the present application;

[0023] Figure 7b Is Figure 7a A front view of the beam produced by the antenna array is shown;

[0024] Figure 7c Is Figure 7a A schematic cross-sectional view of a beam generated by the antenna array in a vertical plane is shown;

[0025] Figure 7d Is Figure 7a A schematic cross-sectional view of a beam generated by an antenna array in a horizontal plane is shown;

[0026] Figure 7e Is Figure 7a A schematic cross-sectional view of a beam generated by the antenna array shown in a -30 degree tilt plane;

[0027] Figure 7f Is Figure 7a A schematic cross-sectional view of a beam generated by the antenna array shown in a 15 degree tilt plane;

[0028] Figure 7g Is Figure 7a A schematic cross-sectional view of a beam generated by the antenna array shown in a 45-degree tilt plane;

[0029] Figure 8a is a schematic diagram of another antenna array provided in an embodiment of the present application;

[0030] Figure 8b Is Figure 8a A front view of the beam produced by the antenna array is shown;

[0031] Figure 8c Is Figure 8a A schematic cross-sectional view of a beam generated by the antenna array in a vertical plane is shown;

[0032] Figure 8d Is Figure 8a A schematic cross-sectional view of a beam generated by an antenna array in a horizontal plane is shown;

[0033] Figure 8e Is Figure 8a A schematic cross-sectional view of a beam generated by the antenna array shown in a -30 degree tilt plane;

[0034] Figure 8f Is Figure 8a A schematic cross-sectional view of a beam generated by the antenna array shown in a 15 degree tilt plane;

[0035] Figure 8g Is Figure 8a A schematic cross-sectional view of a beam generated by the antenna array shown in a 45-degree tilt plane;

[0036] Figure 8h is a side view of another antenna provided in an embodiment of the present application;

[0037] Fig. 9 is a circuit diagram of an antenna array provided in an embodiment of the present application;

[0038] Fig.10 It is a circuit diagram of another antenna array provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0041] The antenna provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0042] Figure 2 A schematic diagram showing the beam coverage of an antenna provided in an embodiment of the present application is shown. Figure 2, wherein an antenna is installed on the roof of a building 21 , and the generated beam covers the adjacent building 22 at a short distance, and the beam coverage range 23 is the beam coverage range under ideal conditions, that is, the beam completely covers the building 22 .

[0043] Figure 3 A schematic diagram of the structure of an antenna provided in an embodiment of the present application is shown. Figure 3 The antenna 300 includes a reflector 310 and an antenna array 320. The reflector 310 includes a top plate 311 and a bottom plate 312, and the angle between the top plate 311 and the bottom plate 312 is a preset angle; the antenna array 320 is arranged on the top plate 311 and the bottom plate 312.

[0044] The angle between the top plate 311 and the bottom plate 312 can be determined based on the height of the building where the antenna is installed, the height of the building covered by the beam, the length / width of two adjacent buildings (such as Figure 1a-Figure 1c ), the distance between two adjacent buildings, etc., so that the preset angle setting can make the beam coverage range generated by the antenna as close as possible. Figure 2 Ideal beam coverage is shown.

[0045] Figure 4a The figure shows an angle diagram of an antenna provided by an embodiment of the present application that propagates beams at multiple different angles. Figure 4b A schematic diagram of the distances at which an antenna provided in an embodiment of the present application propagates beams at multiple different angles is shown. Figure 4c-4g The cross-sectional schematic diagram of the beam width of an antenna provided by an embodiment of the present application at multiple different angles is shown, that is, the direction from the top of the building to the ground. For example, the height of Building 1 and Building 2 is 99 meters, the width is 35 meters, and the spacing is 45 meters. Figure 4a , the beams produced by the antenna propagate at angles of 0, 20, 40, 60, and 66 degrees respectively. Figure 4b , the distances from the antenna to Building 1 are 45 meters, 48 ​​meters, 59 meters, 90 meters, and 109 meters respectively. Figure 4c-4g, the beam width of the antenna propagating a beam at 0 degrees is 42 degrees, which can cover the floors within 45 meters from the antenna; the beam width of the antenna propagating a beam at 20 degrees is 40 degrees, which can cover the floors within 48 meters from the antenna; the beam width of the antenna propagating a beam at 40 degrees is 33 degrees, which can cover the floors within 59 meters from the antenna; the beam width of the antenna propagating a beam at 60 degrees is 22 degrees, which can cover the floors within 90 meters from the antenna; the beam width of the antenna propagating a beam at 66 degrees is 18 degrees, which can cover the floors within 109 meters from the antenna. Thus, the beam generated by the antenna from the horizontal plane (0 degrees) to 66 degrees downward can cover the entire building 1. The antenna provided in the embodiment of the present application generates an asymmetric beam in the vertical plane, which is greatly tilted below the horizontal plane and gently tilted above the horizontal plane. When tilted at about 60 degrees, it provides an attenuation of about -10dB at the edge of the sector and a large attenuation above the sector. The beam width of the beam in the horizontal plane is large enough to cover the first floor of the building at a distance of 45 meters. The beam width in the 0 degree direction can be attenuated and narrowed, and the beam width above 0 degrees to 60 degrees can be widened, maintaining the above beam shape through the working frequency band. All side lobes of the antenna are required to be low in order to direct most of the radiated power to the next building.

[0046] In the antenna 300 provided in the embodiment of the present application, part of the reflector 310 of the antenna 300 is bent to form a top plate 311 and a bottom plate 312, so that the beam generated by the antenna array 320 located on the top plate 311 can cover the area above the horizontal plane. The beam of the entire antenna is formed by the beam generated by the antenna array located on the top plate and the beam generated by the antenna array located on the bottom plate, which can effectively cover the bottom and edge floors of a high-rise building and evenly cover the upper and lower floors.

[0047] In one implementation, the top plate 311 of the reflector 310 of the above-mentioned antenna 300 may include N sub-plates, the first sub-plate is connected to the bottom plate 312, the i-th sub-plate is connected to the (i-1)-th sub-plate; wherein i=2, 3, ..., N, N is a positive integer; the angles between the N sub-plates and the bottom plate 312 increase or decrease sequentially.

[0048] See also Figure 5 , Figure 5A side view of an antenna provided in an embodiment of the present application is shown, wherein, taking N=3 as an example, the first sub-board 311a is connected to the base plate 312, the second sub-board 311b is connected to the first sub-board 311a, the third sub-board 311c is connected to the second sub-board 311b, the angle between the first sub-board 311a and the base plate 312 is 15 degrees, the angle between the second sub-board 311b and the base plate 312 is 30 degrees, and the angle between the third sub-board 311c and the base plate 312 is 45 degrees. The three sub-boards are tilted backwards in sequence, and the angles between them and the base plate increase in sequence.

[0049] Optionally, the angles between the N sub-boards of the top board 311 and the bottom board may also be reduced in sequence. Figure 5 In the illustrated embodiment, the top plate is bent in the opposite direction.

[0050] In an embodiment of the present application, the bent top plate 311 of the reflector 310 of the antenna 300 can be composed of multiple sub-plates and tilted at different angles, so that the antenna array set on the reflector 310 can generate beams at more flexible angles, thereby improving the uniformity of coverage of the building.

[0051] In one implementation, see Figure 3 The reflector 310 of the antenna 300 has a first direction and a second direction, the first direction is perpendicular to the second direction; the antenna array 320 includes a plurality of antenna sub-arrays 321 arranged on the reflector parallel to the first direction; the antenna sub-array 321 includes a plurality of radiation units 3211; the number of the radiation units of two adjacent antenna sub-arrays is different.

[0052] In the antenna 300 provided in the embodiment of the present application, the antenna array 320 provided on the reflector 310 may include a plurality of antenna sub-arrays 321, and each antenna sub-array 321 includes a plurality of radiation units 3211. The antenna array 320 may be arranged on the reflector 310 in such a manner that the plurality of antenna sub-arrays 321 are sequentially arranged on the reflector in parallel with the first direction. By adjusting the positions of the antenna sub-arrays and the radiation units, the radiation direction of the beam generated by the antenna is controlled, thereby controlling the coverage of the building.

[0053] In one implementation, see Figure 3 The radiation units 3211 of the antenna subarray 321 are linearly arranged at a first preset interval, and two adjacent antenna subarrays are shifted at a second preset interval along the positive or negative direction of the first direction.

[0054] In the antenna 300 of the embodiment of the present application, Figure 6a and Figure 6b The antenna array shown in the prior art is different in that Figure 3 , taking the antenna array 320 including 6 antenna subarrays as an example, the 6 antenna subarrays include 2, 3, 4, 5, 4 and 3 radiating elements respectively, and are arranged on the reflector 310 from top to bottom. The second antenna subarray 321b is shifted relative to the first antenna subarray 321a along the negative direction (to the left) of the first direction by a second preset spacing, and other adjacent antenna subarrays are similar, that is, the arrangement position of the radiating elements of the latter antenna subarray is based on the radiating elements of the former antenna subarray.

[0055] Optionally, the second preset distance is related to the first preset distance. For example, the second preset distance is half of the first preset distance.

[0056] In one implementation, see Figure 7a , Figure 7a A schematic diagram of an antenna array provided in an embodiment of the present application is shown, wherein the reflector 310 is a square; two diagonals of the square are respectively the first direction and the second direction; and two vertex corners of the square in the second direction are cut along the first direction.

[0057] in, Figure 7a The front view of the beam produced by the antenna with a frequency of 1710Mhz is shown as follows Figure 7b As shown, the cross-sectional diagrams of the beam in the vertical plane and the horizontal plane are respectively Figure 7c and Figure 7d As shown, Figure 7e , Figure 7f and Figure 7g The cross-section of the beam at the -30, 15 and 45 degree tilt planes is shown respectively. The upslope of the beam is gently tilted, providing -10 dB attenuation at the edge of the 0-60 degree sector and steepening above the sector. The beam width at the tilt plane is shown in Table 1. The narrowest beam tilt is -30 degrees and the widest beam tilt is 45 degrees. The beam points to the horizontal plane and becomes wider in the direction of its largest side lobes, all of which are less than -15 dB, so that most of the radiated power is directed to the covered buildings.

[0058] Table 1.

[0059] Beam width / angle -30 0 15 45 3dB 16 18 22 29 10dB 28 32 43 50

[0060] In the embodiments of the present application, Figure 7a As shown, the reflector 310 is a square, one diagonal line of the square is the first direction x, the other diagonal line is the second direction y, and the two vertices in the second direction y are cut along the first direction x, as shown in FIG. Figure 7aAs shown by the dotted line, one of the cut vertices is located at the top plate 311, and the other cut vertices is located at the bottom plate 312. The two cut vertices are not necessarily the same.

[0061] In one implementation, see Figure 8a , Figure 8a A schematic diagram of another antenna array provided in an embodiment of the present application is shown, wherein the reflector 310 is a rectangle; the length direction of the rectangle is the first direction, and the width direction of the rectangle is the second direction; the two vertex corners of the rectangle in the first direction are cut along a third direction; wherein the third direction is a direction different from the first direction and the second direction.

[0062] in, Figure 8a The front view of the beam produced by the antenna with a frequency of 1710Mhz is shown as follows Figure 8b As shown, the cross-sectional diagrams of the beam in the vertical plane and the horizontal plane are respectively Figure 8c and Figure 8d As shown, Figure 8e , Figure 8f and Figure 8g Cross-sectional views of the beam at -30, 15 and 45 degree tilt planes are shown respectively. The upslope of the beam is gently tilted, providing -10 dB attenuation at the edge of the 0-60 degree sector and steep above the sector. The beam width at the slope is shown in Table 2. The narrowest beam tilt is -30 degrees and the widest beam tilt is 45 degrees. The beam points to the horizontal plane and becomes wider in the direction of its largest side lobe, all side lobes are less than -15 dB, so that most of the radiated power is directed to the covered building. The side lobes of the beam in the horizontal plane and above the horizontal plane are less than -18 dB, so that the antenna 300 does not generate additional noise to other nearby base stations.

[0063] Table 2.

[0064] Beam width / angle -30 0 15 45 3dB 15 18 22 27 10dB 25 32 39 48

[0065] In the embodiments of the present application, Figure 8a As shown, the reflector 310 is a rectangle, the length direction of the rectangle is the first direction x, the width direction of the rectangle is the second direction y, and the two vertex angles in the first direction x are cut along the third direction, as shown in FIG. Figure 8a As shown by the middle dotted line, the two cut top corners are both located on the top plate 311 or both located on the bottom plate 312 .

[0066] Optional, see Figure 8h , Figure 8hA side view of another antenna provided in an embodiment of the present application is shown, wherein, taking N=2 as an example, the top plate 311 may include two sub-plates 311d and 311e, the sub-plate 311d is connected to the bottom plate 312 and the angle between the sub-plate 311d and the bottom plate 312 is 25 degrees, and the sub-plate 311e is connected to the sub-plate 311d and the angle between the sub-plate 311e and the bottom plate 312 is 50 degrees. Wherein, the antenna array 320 includes 5 antenna sub-arrays as an example, and the 5 antenna sub-arrays include 3, 4, 5, 4 and 5 radiation units 3211 respectively, and are arranged on the reflector 310 from top to bottom. The second antenna sub-array 321c is shifted relative to the first antenna sub-array 321d along the negative direction (to the left) of the first direction by a second preset spacing, and other adjacent antenna sub-arrays are similar.

[0067] In one implementation, the radiation unit is an orthogonal dual-polarization radiation unit.

[0068] In the embodiment of the present application, the orthogonal dual-polarization radiation unit has good isolation characteristics, which can effectively reduce the mutual interference between ports, so that signals of different polarizations are transmitted in their respective ports without affecting each other. And with a high cross-polarization discrimination rate, the antenna can more effectively receive and send signals in a specific polarization direction, while having a strong suppression ability for signals in other directions. And it can effectively improve the gain of the antenna, thereby increasing the communication distance and improving the signal quality.

[0069] In one implementation, the radiation unit is a slant-polarization radiation unit.

[0070] In the embodiment of the present application, the oblique polarization radiating unit can excite multiple polarized waves at the same time, which increases the diversity of polarization, enables the antenna to better adapt to changing communication environments and requirements, improves the coverage and quality of the signal, and helps to improve the gain of the antenna. And the oblique polarization radiating unit ensures a good match with the receiving end by adjusting the polarization angle, thereby improving the efficiency of signal transmission.

[0071] In one implementation, see Figure 5 or Figure 8h , the radiation unit 3211 includes a cross dipole 3212 .

[0072] In one implementation, the radiation unit 3211 further includes at least one patch 3213 disposed above the cross dipole 3212 .

[0073] In one implementation, there are multiple patches, and the multiple patches are stacked and arranged above the cross dipole.

[0074] In the embodiment of the present application, the radiation unit 3211 adopts a cross dipole 3212 with a patch 3213 arranged on the top, which can reduce the generation of side lobes at high frequencies of the working frequency band.

[0075] In one implementation, see Fig. 9 and Fig.10 , Fig. 9 and Fig.10 A circuit diagram of an antenna array provided in an embodiment of the present application is shown. Fig. 9 Corresponds to Figure 7a The antenna shown, Fig.10 Corresponds to Figure 8a The antenna 300 further includes two groups of first power dividers 330, each group of the first power dividers 330 includes a plurality of first power dividers; the radiation unit 3211 includes a first polarization port A and a second polarization port B; wherein the first polarization port A is connected to one of the first power dividers in the first group; and the second polarization port B is connected to one of the first power dividers in the second group.

[0076] In the embodiment of the present application, the radiation unit 3211 has two polarization ports, and the two polarization ports correspond to two first power dividers 330 respectively. Each antenna subarray 321 is connected to two first power dividers 330 respectively. One polarization port of each radiation unit 3211 in each antenna subarray 321 is connected to one first power divider 330 respectively. M antenna subarrays 321 are connected to two groups of first power dividers respectively, and each group includes M first power dividers 330, where M is an integer greater than 2. One polarization port of multiple radiation units 3211 in the antenna subarray 321 is connected to multiple output ports of a first power divider 330 in a one-to-one correspondence, and another polarization port of multiple radiation units 3211 in the antenna subarray 321 is connected to multiple output ports of another first power divider 330 in a one-to-one correspondence. As the frequency increases, the power of the radiation unit 3211 arranged in the middle of the antenna subarray 321 increases, and the power of the radiation unit 3211 arranged at the edge of the antenna subarray 321 decreases. The above power distribution of the radiation unit 3211 reduces the dependence of the beam width on the frequency in the horizontal plane and the tilt plane, and reduces the side lobes.

[0077] See also Fig. 9Taking 6 antenna subarrays, which respectively include 2, 3, 4, 5, 4 and 3 radiation units as an example, the first group of first power dividers 330a includes 1a, 2a, 3a, 4a, 5a and 6a, a total of 6 first power dividers, and the second group of first power dividers 330b includes 1b, 2b, 3b, 4b, 5b and 6b, a total of 6 first power dividers, the first polarization port A of each radiation unit 3211 of the first antenna subarray 321a is connected to the first power divider 1a in the first group; the first polarization port A of each radiation unit 3211 of the second antenna subarray 321b is connected to the first power divider 2a in the first group; the first polarization port A of each radiation unit 3211 of the third antenna subarray 321c is connected to the first power divider 3a in the first group; ...; the first polarization port A of each radiation unit 3211 of the sixth antenna subarray 321f is connected to the first power divider 6a in the first group. Correspondingly, the second polarization port B of each radiating element 3211 of the first antenna subarray 321a is connected to the first power divider 1b in the second group; the second polarization port B of each radiating element 3211 of the second antenna subarray 321b is connected to the first power divider 2b in the second group; the second polarization port B of each radiating element 3211 of the third antenna subarray 321c is connected to the first power divider 3b in the second group; ...; the second polarization port B of each radiating element 3211 of the sixth antenna subarray 321f is connected to the first power divider 6b in the second group. The two groups of first power dividers 330 provide phases of 0 degrees, 35 degrees, 15 degrees, 0 degrees, -20 degrees and -40 degrees for the six antenna subarrays 321 accordingly. The power distribution of each radiating element 3211 is shown in Table 3.

[0078] Table 3.

[0079] -0.71 -0.71 -1.93 0 -1.93 -2.74 -0.5 -0.5 -2.74 -3.65 -3.65 -3.65 -3.65 -3.65 -5.06 -5.06 -5.06 -5.06 -4.44 -4.44 -4.44

[0080] Among them, the position of each value in Table 3 is Figure 7a The positions of the radiation units of the antenna array shown correspond to each other, and respectively represent the power values ​​of the radiation units 3211. The above phase compensates for the mechanical tilt of the antenna array 320 arranged on the top plate 311, and forms a beam with a gently inclined upper slope and a maximum direction perpendicular to the non-tilted portion of the reflector 310.

[0081] See also Fig.10, taking 5 antenna subarrays, and the 5 antenna subarrays respectively including 3, 4, 5, 4 and 5 radiation units as an example, the first group of first power dividers 330a includes 11a, 12a, 13a, 14a, 15a, a total of 5 first power dividers, the second group of first power dividers 330b includes 11b, 12b, 13b, 14b, 15b, a total of 5 first power dividers, the first polarization port A of each radiation unit 3211 of the first antenna subarray 321a is connected to the first The first polarization port A of each radiating element 3211 of the second antenna subarray 321b is connected to the first power divider 12a in the first group; the first polarization port A of each radiating element 3211 of the third antenna subarray 321c is connected to the first power divider 13a in the first group; ...; the first polarization port A of each radiating element 3211 of the fifth antenna subarray 321e is connected to the first power divider 15a in the first group. Correspondingly, the second polarization port B of each radiating element 3211 of the first antenna subarray 321a is connected to the first power divider 11b in the second group; the second polarization port B of each radiating element 3211 of the second antenna subarray 321b is connected to the first power divider 12b in the second group; the second polarization port B of each radiating element 3211 of the third antenna subarray 321c is connected to the first power divider 13b in the second group; ...; the second polarization port B of each radiating element 3211 of the fifth antenna subarray 321e is connected to the first power divider 15b in the second group. The two groups of first power dividers 330 provide phases of 35 degrees, 15 degrees, 0 degrees, -25 degrees and -50 degrees for the five antenna subarrays 321 accordingly. The power distribution of each radiating element 3211 is shown in Table 4.

[0082] Table 4.

[0083] -2.82 0 -2.82 -6.27 -2.28 -2.28 -6.27 -5.97 -5.97 -5.97 -5.97 -5.97 -7.38 -7.38 -7.38 -7.38 -10.76 -10.76 -10.76 -10.76 -10.76

[0084] Among them, the position of each value in Table 4 is Figure 8a The positions of the radiation units of the antenna array shown correspond to each other, and respectively represent the power values ​​of the radiation units 3211. The above phase compensates for the mechanical tilt of the antenna array 320 arranged on the top plate 311, and forms a beam with a gently inclined upper slope and a maximum direction perpendicular to the non-tilted portion of the reflector 310.

[0085] In one implementation, see Fig. 9 and Fig.10 , Fig. 9 and Fig.10 A circuit diagram of an antenna array provided in an embodiment of the present application is shown. Fig. 9 Corresponds to Figure 7aThe antenna shown, Fig.10 Corresponds to Figure 8a The antenna 300 further includes two second power distributors 340 ; wherein the two groups of first power distributors 330 are connected to the two second power distributors 340 respectively.

[0086] In the embodiment of the present application, the output ports of the two groups of first power dividers 330 are connected to the port PA and the port PB of the antenna array 320 through the second power divider 340 related to the frequency, and the multiple input ports of the second power divider 340 are connected to the output ports of the multiple first power dividers 330 in a one-to-one correspondence, and the output ports of the two second power dividers 340 are connected to the port PA and the port PB of the antenna array 320 in a one-to-one correspondence. Among them, the power of the middle antenna subarray 321 increases with the increase of frequency, and the power of the top and bottom antenna subarrays 321 decreases with the increase of frequency. The above power distribution of the antenna array 320 reduces the dependence of the beam width on the frequency in the vertical plane.

[0087] The antenna provided in the embodiment of the present application can generate an asymmetric beam in a vertical plane. When the antenna is deployed on the top of a high-rise building, it can evenly cover the high-rise building at a short distance, achieve effective coverage of the ground floors and edge floors of the high-rise building, and improve the coverage balance of the upper and lower floors.

[0088] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0089] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An antenna, characterized in that: include: Reflector, and antenna array; Wherein, the reflective plate comprises a top plate and a bottom plate, and the angle between the top plate and the bottom plate is a preset angle; The antenna array is arranged on the top plate and the bottom plate.

2. The antenna according to claim 1, characterized in that The top plate includes N sub-plates, the first sub-plate is connected to the bottom plate, and the i-th sub-plate is connected to the (i-1)-th sub-plate; wherein i=2, 3, ..., N, N is a positive integer; and the angles between the N sub-plates and the bottom plate increase or decrease sequentially.

3. The antenna according to claim 1, characterized in that The reflective plate has a first direction and a second direction, and the first direction is perpendicular to the second direction; The antenna array includes a plurality of antenna sub-arrays arranged on the reflector in parallel with the first direction; the antenna sub-arrays include a plurality of radiation units; and the numbers of the radiation units of two adjacent antenna sub-arrays are different.

4. The antenna according to claim 3, characterized in that: The radiation units are linearly arranged at a first preset interval; and two adjacent antenna subarrays are shifted at a second preset interval along the positive direction or the negative direction of the first direction.

5. The antenna according to claim 3, characterized in that: The reflective plate is a square; two diagonals of the square are the first direction and the second direction respectively; Two vertex corners of the square in the second direction are cut along the first direction.

6. The antenna according to claim 3, characterized in that: The reflector is rectangular; the length direction of the rectangle is the first direction, and the width direction of the rectangle is the second direction; Two vertex corners of the rectangle in the first direction are cut along a third direction; wherein the third direction is a direction different from the first direction and the second direction.

7. The antenna according to claim 3, characterized in that: The radiation unit is an orthogonal dual-polarization radiation unit.

8. The antenna according to claim 3, characterized in that: The radiation unit is a slant polarization radiation unit.

9. The antenna according to claim 3, characterized in that: The radiating element comprises a crossed dipole.

10. The antenna according to claim 9, characterized in that: The radiating element further comprises at least one patch arranged above the cross dipole.

11. The antenna according to claim 10, characterized in that: There are multiple patches, and the multiple patches are stacked and arranged above the cross dipole.

12. The antenna according to claim 3, characterized in that: The antenna further comprises two groups of first power distributors, each group of the first power distributors comprises a plurality of first power distributors; the radiation unit comprises a first polarization port and a second polarization port; The first polarization port is connected to one of the first power dividers in the first group; and the second polarization port is connected to one of the first power dividers in the second group.

13. The antenna according to claim 12, characterized in that: The antenna also includes two second power dividers; Wherein, the two groups of first power distributors are connected to the two second power distributors respectively.

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