Vertical plane large-field-angle spotlight antenna

Abstract

The invention discloses a vertical plane large-field-angle spotlight antenna, which relates to the technical field of antennas and comprises a first bottom box, two nested arrays, a second high-frequency radiation unit and two combiners, the two nested arrays are arranged above the first bottom box at a first distance, each nested array comprises a low-frequency radiation unit, a second bottom box and a first high-frequency radiation unit, the low-frequency radiation unit is arranged above the first bottom box, the second bottom box is arranged above the low-frequency radiation unit, and the first high-frequency radiation unit is arranged above the first bottom box; the second high-frequency radiation unit is arranged between the two nested arrays; the two combiners are arranged on the back surface of the first bottom box; the nested array and the second high-frequency radiation unit are connected with the combiners through coaxial cables; wherein the second bottom box is smaller than the first bottom box, and the antenna not only can reduce the production cost, but also can improve the space utilization rate.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a vertical large-angle spotlight antenna. Background Art

[0002] With the rapid development of communication technology, continuous technological innovation, and increasingly severe real estate development, the number of high-rise buildings has increased dramatically. Traditional antennas have signal dead spots when covering high-rise buildings, while vertical large-angle spotlight antennas can effectively solve this problem. The market demand for vertical large-angle spotlight antennas is becoming more and more obvious. However, in the existing technology, most spotlight antennas have the problems of large antenna size, low space utilization rate and low concealment. Summary of the invention

[0003] The main purpose of the embodiments of the present application is to solve at least one of the technical problems existing in the prior art and to propose a vertical large-angle spotlight antenna that can not only reduce production costs but also improve space utilization.

[0004] To achieve the above-mentioned purpose, the embodiment of the present invention application proposes a vertical large-angle spotlight antenna, including: a first base box, two nested arrays, a second high-frequency radiation unit and two combiners; the two nested arrays are arranged above the first base box at a first distance, and the nested arrays include: a low-frequency radiation unit, a second base box and a first high-frequency radiation unit, the low-frequency radiation unit is arranged above the first base box, the second base box is arranged above the low-frequency radiation unit, and the first high-frequency radiation unit is arranged above the first base box; the second high-frequency radiation unit is arranged in the middle of the two nested arrays; the two combiners are arranged on the back of the first base box, and the nested arrays and the second high-frequency radiation unit are connected to the combiner via a coaxial cable; wherein the second base box is smaller than the first base box. A vertical large-angle spotlight antenna provided according to an embodiment of the present invention has at least the following beneficial effects: a first high-frequency radiation unit is equipped with a second base box and nested above a low-frequency radiation unit to form a nested array. The first high-frequency radiation unit does not need to occupy the area of ​​the first base box, which greatly reduces the required area of ​​the first base box, thereby reducing the size of the antenna, improving the concealment of the antenna and space utilization, and reducing the material cost of antenna production; a combiner is used to connect the low-frequency radiation unit, the first high-frequency radiation unit and the second high-frequency radiation unit in the nested array. On the one hand, it not only reduces the use of coaxial cables, but also reduces the solder joints of the entire antenna, thereby improving production efficiency as well as stability and consistency of the antenna; on the other hand, the combiner connects the high- and low-frequency nested arrays and the second high-frequency radiation unit, thereby realizing the broadband of the antenna and improving the radiation parameters and circuit parameter indicators of the antenna.

[0005] In some embodiments, the low-frequency radiation unit includes a low-frequency oscillator plate, four first coupling plates and a power divider, the power divider is arranged above the first base box, the four first coupling plates are evenly arranged above the power divider, and the low-frequency oscillator plate is arranged above the four first coupling plates.

[0006] In some embodiments, a first square hollow is provided in the middle of the low-frequency oscillator plate, and second square hollows are extended to the areas where the four corners of the first square hollow are located.

[0007] In some embodiments, the low-frequency oscillator plate is a square structure, and first loading plates are extended and arranged in the regions where the four corners of the low-frequency oscillator plate are located.

[0008] In some embodiments, the first coupling piece includes an arc-shaped member and a support member, one end of the support member is connected to the power divider, and the other end of the support member is connected to the arc-shaped member.

[0009] In some embodiments, the first high-frequency radiation unit includes a guide plate, a high-frequency oscillator plate, a feed balun assembly and a ground plate, wherein the ground plate is arranged above the second base box, and the feed balun assembly is composed of a second coupling plate and a third coupling plate distributed vertically orthogonally, and the feed balun assembly is arranged above the ground plate, and the feed balun assembly is used to support the high-frequency oscillator plate and the guide plate, and the guide plate is arranged above the high-frequency oscillator plate.

[0010] In some embodiments, the first bottom box includes a first quadrilateral bottom plate, two first side plates and two second side plates, the two first side plates are symmetrically arranged on two edges of the first quadrilateral bottom plate, and the two second side plates are symmetrically arranged on the other two edges of the first quadrilateral bottom plate.

[0011] In some embodiments, the second bottom box includes a second quadrilateral bottom plate, two third side plates and two fourth side plates, a circular hollow is provided in the middle of the second quadrilateral bottom plate, the two third side plates are symmetrically arranged on two sides of the second quadrilateral bottom plate, and the two fourth side plates are symmetrically arranged on the other two sides of the second quadrilateral bottom plate.

[0012] In some embodiments, a second loading piece is provided extending outward from the edge of the third side plate of the second bottom box, and the second loading piece is parallel to the second quadrilateral bottom plate.

[0013] In some embodiments, the second high-frequency radiation unit has the same size and structure as the first high-frequency radiation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments; Figure 1 It is a schematic diagram of the overall structure of a vertical large-angle spotlight antenna provided by the present invention; Figure 2 It is a schematic diagram of the back structure of a vertical large-angle spotlight antenna provided by the present invention; Figure 3 It is a structural schematic diagram of a nested array in a vertical large-angle spotlight antenna provided by the present invention; Figure 4 It is a structural schematic diagram of a low-frequency radiation unit in a vertical plane large-angle spotlight antenna provided by the present invention; Figure 5 It is a partial structural schematic diagram of a low-frequency radiation unit in a vertical plane large-angle spotlight antenna provided by the present invention; Figure 6 It is a structural schematic diagram of a first high-frequency radiation unit in a vertical plane large-angle spotlight antenna provided by the present invention; Figure 7 It is a front structural schematic diagram of a second coupling piece in a vertical plane large angle spotlight antenna provided by the present invention; Figure 8 It is a schematic diagram of the back structure of the second coupling plate in a vertical plane large angle spotlight antenna provided by the present invention; Fig. 9 It is a structural schematic diagram of a grounding plate in a vertical large-angle spotlight antenna provided by the present invention; Fig.10 It is a structural schematic diagram of a combiner in a vertical large-angle spotlight antenna provided by the present invention; Fig.11 It is a structural schematic diagram of a second bottom box in a vertical large-angle spotlight antenna provided by the present invention. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0017] It should be noted that the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0019] With the rapid development of communication technology, continuous technological innovation, and increasingly severe real estate development, the number of high-rise buildings has increased dramatically. Traditional antennas have signal dead spots when covering high-rise buildings, while vertical large-angle spotlight antennas can effectively solve this problem. The market demand for vertical large-angle spotlight antennas is becoming more and more obvious. However, in the existing technology, most spotlight antennas have the problems of large antenna size, low space utilization rate and low concealment.

[0020] Based on this, an embodiment of the present invention provides a vertical large-angle spotlight antenna, which can not only reduce production costs but also improve space utilization.

[0021] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0022] Reference Figure 1 , Figure 2 , Figure 3 The embodiment of the present invention provides a vertical large-angle spotlight antenna, comprising: a first base box 1000, two nested arrays 2000, a second high-frequency radiation unit 3000 and two combiners 4000; the two nested arrays 2000 are arranged above the first base box 1000 at a first distance, and the nested array 2000 comprises: a low-frequency radiation unit 2100, a second base box 2200 and a first high-frequency radiation unit 2300, and the low-frequency radiation unit 2100 is arranged above the first base box 1000. The second base box 2200 is arranged above the low-frequency radiation unit 2100, and the first high-frequency radiation unit 2300 is arranged above the first base box 1000; the second high-frequency radiation unit 3000 is arranged in the middle of the two nested arrays 2000; two combiners 4000 are arranged on the back of the first base box 1000, and the nested arrays 2000 and the second high-frequency radiation unit 3000 are connected to the combiner 4000 through a coaxial cable; wherein the second base box 2200 is smaller than the first base box 1000.

[0023] According to an embodiment of the present invention, a vertical large-angle spotlight antenna is provided. The first high-frequency radiation unit 2300 is equipped with a second base box 2200 and is nested above the low-frequency radiation unit 2100 to form a nested array 2000. The first high-frequency radiation unit 2300 does not need to occupy the area of ​​the first base box 1000, which greatly reduces the required area of ​​the first base box 1000, thereby reducing the volume of the antenna, improving the concealment of the antenna and the space utilization rate, and reducing the material cost of antenna production; a combiner 4000 is used to connect the low-frequency radiation unit 2100, the first high-frequency radiation unit 2300 and the second high-frequency radiation unit 3000 in the nested array 2000. On the one hand, it not only reduces the use of coaxial cables, but also reduces the solder joints of the entire antenna, thereby improving the production efficiency as well as the stability and consistency of the antenna; on the other hand, the combiner 4000 connects the high- and low-frequency nested array 2000 and the second high-frequency radiation unit 3000, thereby realizing the broadband of the antenna and improving the radiation parameters and circuit parameter indicators of the antenna.

[0024] It can be understood that a single combiner 4000 is able to connect the low-frequency radiation unit 2100, the first high-frequency radiation unit 2300 and the second high-frequency radiation unit 3000 in the nested array 2000. In a limited space, through the design of such an integrated combiner 4000, space resources can be more effectively utilized, and unnecessary cable length and the number of welding points can be reduced.

[0025] It can be understood that the second bottom box 2200 is disposed above the low-frequency radiation unit 2100 through a plurality of support columns.

[0026] Preferably, the operating frequency band range of the low-frequency radiation unit 2100 is 880MHz-960MHz, the operating frequency band range of the first high-frequency radiation unit 2300 and the second high-frequency radiation unit 3000 are both 1710MHz-2675MHz, and the combiner 4000 connects the high- and low-frequency nested array 2000 and the second high-frequency radiation unit 3000. On the one hand, the broadband antenna is realized, and the antenna covers the frequency band of 880-2675MHz. On the other hand, the radiation parameters and circuit parameters of the antenna are improved, and the standing wave ratio of the antenna is below 1.5.

[0027] Preferably, the first distance is 3 / 4λ, the two nested arrays 2000 are arranged above the first bottom box 1000 at a distance of 3 / 4λ, and the distance between the two low-frequency oscillators is 3 / 4λ.

[0028] It should be noted that since the first high-frequency radiation unit 2300 is equipped with the second base box 2200 and placed above the low-frequency radiation unit 2100, the phase and amplitude of the first high-frequency radiation unit 2300 are changed. The phase and amplitude can be improved by extending the coaxial cable connecting the first high-frequency radiation unit 2300 and the combiner 4000, which requires approximately 1 / 8λ to be extended.

[0029] Preferably, the phase and amplitude can be improved by extending the coaxial cable connecting the first high-frequency radiation unit 2300 and the combiner 4000 by 20 mm.

[0030] In some embodiments, the second high-frequency radiation unit 3000 has the same size and structure as the first high-frequency radiation unit 2300 .

[0031] It should be noted that the second high-frequency radiation unit 3000 and the first high-frequency radiation unit 2300 are both PCB half-wave high-frequency radiation units.

[0032] Preferably, the spacing between the three coupled-fed PCB half-wave high-frequency radiation units is λ.

[0033] In some embodiments, reference Figure 4 , Figure 5 The low-frequency radiation unit 2100 includes a low-frequency oscillator plate 2110, four first coupling plates 2120 and a power divider 2130. The power divider 2130 is arranged above the first base box 1000, the four first coupling plates 2120 are evenly arranged above the power divider 2130, and the low-frequency oscillator plate 2110 is arranged above the four first coupling plates 2120.

[0034] It should be noted that, refer to Figure 5 The power divider 2130 is a one-to-two power divider. Two first welding points 1 are provided in the power divider 2130, and two second welding points 2 are correspondingly provided in the combiner 4000. The two first welding points 1 on the power divider 2130 in the low-frequency radiation unit 2100 are connected to the two second welding points 2 in the combiner 4000 using a coaxial cable. Fig.10 .

[0035] In some embodiments, reference Figure 4 A first square hollow 2111 is provided in the middle of the low-frequency oscillator plate 2110 , and second square hollows 2112 are extended to the four corners of the first square hollow 2111 .

[0036] It can be understood that a first square hollow 2111 is provided in the middle of the low-frequency oscillator plate 2110, and second square hollows 2112 are extended in the areas where the four corners of the first square hollow 2111 are located. On the one hand, the low-frequency current distribution can be adjusted and the low-frequency isolation can be improved. On the other hand, the coaxial cable connected to the first high-frequency radiation unit 2300 can pass through the hollow area of ​​the low-frequency oscillator plate 2110 and be connected to the combiner 4000.

[0037] It should be noted that the length of the first square hollow 2111 is 1 / 16λ, the width is 1 / 16λ, and the height is 1 mm.

[0038] Preferably, the first square hollow 2111 has a length of 21 mm, a width of 21 mm and a height of 1 mm.

[0039] Preferably, the second square hollow 2112 has a length of 6 mm, a width of 5 mm and a height of 1 mm.

[0040] In some embodiments, reference Figure 4 The low-frequency oscillator plate 2110 is a square structure, and first loading plates 2113 are extended and arranged in the areas where the four corners of the low-frequency oscillator plate 2110 are located.

[0041] It should be noted that the radiation surface on the low-frequency oscillator plate 2110 is a rectangular parallelepiped with a length of 3 / 8λ, a width of 3 / 8λ, and a height of 1 mm.

[0042] It should be noted that the first loading plates 2113 extending from the four corners of the low-frequency oscillator plate 2110 can help adjust the resonant frequency so that the antenna can better adapt to a specific frequency band or frequency range, thereby improving the communication performance of the antenna.

[0043] Preferably, the radiation surface on the low-frequency oscillator plate 2110 has a length of 125 mm, a width of 125 mm, and a height of 1 mm.

[0044] In some embodiments, reference Figure 4 The first loading piece 2113 includes a first horizontal piece and a first vertical piece, and the first horizontal piece and the first vertical piece are connected to form an "L"-shaped structure.

[0045] It should be noted that the areas where the four corners of the low-frequency oscillator plate 2110 are located are all connected to one end of the first horizontal piece, the other end of the first horizontal piece is connected to one end of the first vertical piece, and the other end of the first vertical piece extends downward toward the power divider 2130.

[0046] In some embodiments, reference Figure 5The first coupling piece 2120 includes an arc-shaped member 2121 and a support member 2122 , one end of the support member 2122 is connected to the power divider 2130 , and the other end of the support member 2122 is connected to the arc-shaped member 2121 .

[0047] It can be understood that the design of the arc-shaped member 2121 can better increase the contact area with the low-frequency oscillator plate 2110 and provide stable support.

[0048] It should be noted that, refer to Figure 5 Four third welding points 3 are provided in the power divider 2130 , and one end of the supporting members 2122 of the four first coupling plates 2120 are respectively welded and fixed to the four third welding points 3 provided in the power divider 2130 .

[0049] It can be understood that the four first coupling plates 2120 are evenly arranged above the power divider 2130, and the first coupling plates 2120 include an arc-shaped member 2121 and a support member 2122. One end of the support member 2122 is connected to the power divider 2130, and the other end of the support member 2122 is connected to the center position of the arc-shaped member 2121. The four arc-shaped members 2121 form a quasi-circular shape, which can more effectively disperse the pressure from the low-frequency oscillator plate 2110 and further provide more stable support.

[0050] In some embodiments, reference Figure 5 The low-frequency radiation unit 2100 also includes four epoxy resin plates 2123, and the epoxy resin plates 2123 have the same size and structure as the arc-shaped pieces 2121 in the first coupling piece 2120, and the four epoxy resin plates 2123 are respectively arranged above the arc-shaped pieces 2121 of the four first coupling pieces 2120.

[0051] It should be noted that four epoxy resin plates 2123 are arranged between the arc-shaped pieces 2121 of the four first coupling plates 2120 and the low-frequency oscillator plate 2110. On the one hand, they can better isolate the potential difference between the coupling plate and the low-frequency oscillator plate 2110 to prevent current leakage and short circuit. On the other hand, they can also provide certain support and fixing effects to ensure the stable position of the low-frequency oscillator plate 2110, prevent displacement or loosening under vibration or impact, and improve the overall structural stability.

[0052] It can be understood that a low-frequency oscillator plate 2110, four first coupling plates 2120 and four epoxy resin plates 2123 are fixedly connected by using a number of nylon rivets, and then one end of the support members 2122 of the four first coupling plates 2120 are respectively welded to the four third welding points 3 set in the power divider 2130 to form a low-frequency radiation unit 2100.

[0053] In some embodiments, reference Figure 6The first high-frequency radiation unit 2300 includes a guide plate 2310, a high-frequency oscillator plate 2320, a feeding balun assembly 2330 and a grounding plate 2340. The grounding plate 2340 is arranged above the second base box 2200. The feeding balun assembly 2330 is composed of a second coupling plate 2331 and a third coupling plate 2332 which are vertically orthogonally distributed. The feeding balun assembly 2330 is arranged above the grounding plate 2340. The feeding balun assembly 2330 is used to support the high-frequency oscillator plate 2320 and the guide plate 2310. The guide plate 2310 is arranged above the high-frequency oscillator plate 2320.

[0054] It should be noted that, refer to Figure 7 Two first bumps 10 are provided at the upper ends of the second coupling plate 2331 and the third coupling plate 2332, two second bumps 20 are provided at the lower ends of the second coupling plate 2331 and the third coupling plate 2332, and four slots are provided in the grounding plate 2340 to be respectively connected to the four second bumps 20 below the feeding balun assembly 2330, and four slots are provided in the high-frequency oscillator plate 2320 to be connected to the four first bumps 10 above the feeding balun assembly 2330.

[0055] Furthermore, a third bump 30 is disposed above the first bump 10 , and four slots are disposed in the guide plate 2310 to be respectively connected to four third bumps 30 located above the first bump 10 in the feeding balun assembly 2330 .

[0056] It should be noted that, by providing a third protrusion 30 above the first protrusion 10, the feed balun assembly 2330 can be used not only to support the high-frequency oscillator plate 2320, but also to support the guide plate 2310 located above the high-frequency oscillator plate 2320, without the need to provide an additional bracket for supporting the guide plate 2310, thereby simplifying the overall structure. This not only reduces the manufacturing cost, but also reduces the complexity and time required in the antenna assembly process. It should be noted that, refer to Figure 7 A fourth welding point 4 is provided in the first bump 10 , and the first bump 10 is welded to the high-frequency oscillator plate 2320 via the fourth welding point 4 ; a fifth welding point 5 is provided in the third bump 30 , and the third bump 30 is welded to the guide plate 2310 via the fifth welding point 5 .

[0057] It can be understood that four slots are provided in the high-frequency oscillator plate 2320 and are connected to the four first bumps 10 above the feeding balun assembly 2330. Furthermore, a fourth welding point 4 is provided in the first bump 10 and is welded to the high-frequency oscillator plate 2320, so that the connection between the first bump 10 and the high-frequency oscillator plate 2320 is more stable, thereby improving the stability of the antenna operation; four slots are provided in the guide plate 2310 and are respectively connected to the four third bumps 30 in the feeding balun assembly 2330. Furthermore, a fifth welding point 5 is provided in the third bump 30 and is welded to the guide plate 2310, so that the connection between the third bump 30 and the guide plate 2310 is more stable, thereby improving the stability of the antenna operation.

[0058] In some embodiments, reference Figure 8 , Fig. 9 , Fig.10 Two sixth welding points 6 and two seventh welding points 7 are arranged in the grounding plate 2340, and feeding lines are arranged in the second coupling plate 2331 and the third coupling plate 2332. Eighth welding points 8 are arranged in the feeding lines, and the eighth welding point 8 is welded and connected to the sixth welding point 6 arranged in the grounding plate 2340; three ninth welding points 9 are arranged in the combiner 4000, and the two seventh welding points 7 arranged in the grounding plate 2340 are respectively connected to the two ninth welding points 9 arranged in the combiner 4000 by using a coaxial cable, and the remaining ninth welding point 9 in the combiner 4000 is connected to the second high-frequency radiation unit 3000 through a coaxial cable.

[0059] In some embodiments, the second high-frequency radiation unit 3000 has the same size and structure as the first high-frequency radiation unit 2300. The second high-frequency radiation unit 3000 also includes a guide plate 2310, a high-frequency oscillator plate 2320, a feeding balun assembly 2330 and a grounding plate 2340. The grounding plate 2340 is arranged above the second base box 2200. The feeding balun assembly 2330 is composed of a second coupling plate 2331 and a third coupling plate 2332 that are vertically orthogonally distributed. The feeding balun assembly 2330 is arranged above the grounding plate 2340. The feeding balun assembly 2330 is used to support the high-frequency oscillator plate 2320 and the guide plate 2310. The guide plate 2310 is arranged above the high-frequency oscillator plate 2320.

[0060] It should be noted that the second high-frequency radiation unit 3000 and the first high-frequency radiation unit 2300 are both PCB half-wave high-frequency radiation units.

[0061] In some embodiments, reference Figure 1The first bottom box 1000 includes a first quadrilateral bottom plate 1100, two first side plates 1200 and two second side plates 1300. The two first side plates 1200 are symmetrically arranged on two sides of the first quadrilateral bottom plate 1100, and the two second side plates 1300 are symmetrically arranged on the other two sides of the first quadrilateral bottom plate 1100.

[0062] It can be understood that by respectively arranging two first side panels 1200 and two second side panels 1300 on the four sides of the first quadrilateral bottom panel 1100 , the lobe width can be better adjusted.

[0063] Preferably, the first bottom box 1000 is made of metal material.

[0064] Preferably, the first quadrilateral bottom plate 1100 in the first bottom box 1000 has a length of 450 mm, a width of 230 mm, and a height of 2.5 mm.

[0065] It should be noted that the middle portion of the upper edge of the second side plate 1300 is recessed inwards.

[0066] Preferably, the height of the first side plate 1200 is 42 mm, the height of the higher area of ​​the second side plate 1300 is 42 mm, and the height of the lower area of ​​the second side plate 1300 is 22 mm.

[0067] It can be understood that by adjusting the height of the first side plate 1200 and the second side plate 1300 in the first bottom box 1000 , the lobe width of the antenna can be better adjusted.

[0068] In some embodiments, reference Fig.11 The second bottom box 2200 includes a second quadrilateral bottom plate 2210, two third side plates 2220 and two fourth side plates 2230. A circular hollow 2240 is arranged in the middle of the second quadrilateral bottom plate 2210. The two third side plates 2220 are symmetrically arranged on two sides of the second quadrilateral bottom plate 2210, and the two fourth side plates 2230 are symmetrically arranged on the other two sides of the second quadrilateral bottom plate 2210.

[0069] Preferably, the second bottom box 2200 is made of metal material.

[0070] Preferably, the second quadrilateral bottom plate 2210 in the second bottom box 2200 has a length of 95 mm, a width of 95 mm, and a height of 1 mm.

[0071] Preferably, the height of the third side plate 2220 and the fourth side plate 2230 are both 7.5 mm.

[0072] It should be noted that a circular hollow 2240 is provided in the middle of the second quadrilateral base plate 2210, which enables the coaxial cable connected to the first high-frequency radiation unit 2300 to pass through the circular hollow 2240 and then through the low-frequency radiation unit 2100 to be connected to the combiner 4000. In addition, the design of the circular hollow 2240 can also reduce the overall weight of the antenna and save production costs.

[0073] In some embodiments, reference Fig.11 A second loading piece 2250 is extended outward from the edge of the third side plate 2220 of the second bottom box 2200 , and the second loading piece 2250 is parallel to the second quadrilateral bottom plate 2210 .

[0074] Preferably, the second loading piece 2250 is in a rectangular shape, and the length of the second loading piece 2250 is 36 mm, the width is 16 mm, and the height is 1 mm; and the second loading piece 2250 is located in the middle of the edge of the third side plate 2220 and is perpendicular to the third side plate 2220, has a tuning effect, and optimizes the antenna performance.

[0075] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A vertical large-angle spotlight antenna, characterized in that: include: First bottom box; Two nested arrays, the two nested arrays are arranged above the first bottom box at a first distance, the nested arrays include: a low-frequency radiation unit, a second bottom box and a first high-frequency radiation unit, the low-frequency radiation unit is arranged above the first bottom box, the second bottom box is arranged above the low-frequency radiation unit, and the first high-frequency radiation unit is arranged above the first bottom box; A second high-frequency radiation unit, wherein the second high-frequency radiation unit is disposed between the two nested arrays; Two combiners, the two combiners are arranged on the back of the first bottom box, and the nested array and the second high-frequency radiation unit are connected to the combiners through a coaxial cable; Wherein, the second bottom box is smaller than the first bottom box.

2. The vertical large-angle spotlight antenna according to claim 1, characterized in that: The low-frequency radiation unit includes a low-frequency oscillator plate, four first coupling plates and a power divider. The power divider is arranged above the first base box, the four first coupling plates are evenly arranged above the power divider, and the low-frequency oscillator plate is arranged above the four first coupling plates.

3. The vertical large-angle spotlight antenna according to claim 2, characterized in that: A first square hollow is provided in the middle of the low-frequency oscillator plate, and second square hollows are extended to the areas where the four corners of the first square hollow are located.

4. The vertical large-angle spotlight antenna according to claim 2, characterized in that: The low-frequency oscillator plate is a square structure, and first loading plates are extended and arranged in the areas where the four corners of the low-frequency oscillator plate are located.

5. The vertical large-angle spotlight antenna according to claim 2, characterized in that: The first coupling piece includes an arc-shaped piece and a support piece, one end of the support piece is connected to the power divider, and the other end of the support piece is connected to the arc-shaped piece.

6. The vertical large-angle spotlight antenna according to claim 1, characterized in that: The first high-frequency radiation unit includes a guide plate, a high-frequency oscillator plate, a feeding balun component and a grounding plate. The grounding plate is arranged above the second base box. The feeding balun component is composed of a second coupling plate and a third coupling plate distributed vertically orthogonally. The feeding balun component is arranged above the grounding plate. The feeding balun component is used to support the high-frequency oscillator plate and the guide plate. The guide plate is arranged above the high-frequency oscillator plate.

7. The vertical large-angle spotlight antenna according to claim 1, characterized in that: The first bottom box includes a first quadrilateral bottom plate, two first side plates and two second side plates, the two first side plates are symmetrically arranged on two sides of the first quadrilateral bottom plate, and the two second side plates are symmetrically arranged on the other two sides of the first quadrilateral bottom plate.

8. The vertical large-angle spotlight antenna according to claim 1, characterized in that: The second bottom box includes a second quadrilateral bottom plate, two third side plates and two fourth side plates. A circular hollow is arranged in the middle of the second quadrilateral bottom plate. The two third side plates are symmetrically arranged on two sides of the second quadrilateral bottom plate, and the two fourth side plates are symmetrically arranged on the other two sides of the second quadrilateral bottom plate.

9. The vertical large-angle spotlight antenna according to claim 8, characterized in that: A second loading piece is provided extending outwardly from the edge of the third side plate of the second bottom box, and the second loading piece is parallel to the second quadrilateral bottom plate.

10. The vertical large-angle spotlight antenna according to any one of claims 1 to 9, characterized in that: The second high-frequency radiation unit has the same size and structure as the first high-frequency radiation unit.

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