Ceiling antenna

Abstract

The utility model provides a ceiling antenna, which comprises a bottom plate, and a plurality of bosses are arranged in a first area and a second area on the bottom plate; the aluminum sheet is provided with a hole position matched with the boss of the first area of the bottom plate, and the aluminum sheet serves as an oscillator with a first frequency band width; a small-hole screw wire sleeve; a small-hole screw wire claw; the antenna cable sequentially penetrates through the small-hole screw wire sleeve, the small-hole screw wire claw and the mounting hole in the center of the bottom plate; the printed circuit board is arranged above the boss in the second area of the bottom plate, and the printed circuit board is provided with oscillators with a second frequency band width and a third frequency band width; and the outer cover is fixed with the bottom plate through a buckle. According to the utility model, the aluminum sheet is used for replacing part of the high-frequency printed circuit board, the antenna cost is greatly reduced while the electrical performance index of the antenna is kept unchanged, the boss structure is arranged on the bottom plate, so that a cavity is formed between the assembled high-frequency printed circuit board and the bottom plate, the cavity optimizes the impedance matching of a high frequency band, and the antenna performance is improved. And electrical performance indexes of other frequency bands can be kept unchanged.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a ceiling antenna. Background Art

[0002] Ceiling antenna is a type of mobile communication system antenna, mainly used for indoor signal coverage. It plays an important role in indoor network construction and optimization.

[0003] In the related art, ceiling-mounted antennas have the problems of high cost and failure to balance low-frequency and high-frequency communication performance. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a ceiling-mounted antenna.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model provides a ceiling antenna, comprising: a bottom plate, a plurality of bosses are arranged in a first area and a second area of ​​the bottom plate, and a mounting hole is arranged in the center of the bottom plate; an aluminum sheet, a hole position matched with the boss of the first area of ​​the bottom plate is arranged on the aluminum sheet, the aluminum sheet is fixedly mounted on the bottom plate by hot-melting the hole position and the boss of the first area, and the aluminum sheet serves as a vibrator of a first frequency band width; a small hole screw wire sleeve; a small hole screw wire claw; an antenna cable, the antenna cable passes through the small hole screw wire sleeve, the small hole screw wire claw and the mounting hole in the center of the bottom plate in sequence; a printed circuit board, the printed circuit board is arranged above the boss of the second area of ​​the bottom plate, the cable core of the antenna cable passes through the soldering pad of the printed circuit board and is welded on the front side of the printed circuit board, the cable net is welded on the back side of the printed circuit board, the printed circuit board is fixed to the bottom plate through a through hole, vibrators of a second frequency band width and a third frequency band width are arranged on the printed circuit board, and the first frequency band width is less than the second frequency band width and the third frequency band width; an outer cover, the outer cover is fixed to the bottom plate through a buckle.

[0007] The above-mentioned ceiling antenna of the utility model also has the following additional technical features:

[0008] Specifically, the printed circuit board includes: a first fixing point, a second fixing point and a third fixing point, the first fixing point, the second fixing point and the third fixing point are arc-shaped, and the printed circuit board is fixed to the base plate through through holes at the first fixing point, the second fixing point and the third fixing point.

[0009] Furthermore, two nylon screws are sequentially passed through the through holes of the bottom plate and the printed circuit board, and a nylon nut is screwed onto the nylon screws on one side of the printed circuit board to clamp the printed circuit board and the bottom plate.

[0010] Specifically, after stainless steel self-tapping screws are passed through the through holes on the bottom plate, the stainless steel screws are tightened on the columns on the outer cover to fix the outer cover to the bottom plate.

[0011] Specifically, the small hole screw wire claw is inserted into the round hole structure reserved on the bottom plate to tighten the small hole screw wire claw.

[0012] Specifically, the small hole screw wire sleeve is clamped on the bottom plate by a buckle to prevent the small hole screw wire claw from loosening.

[0013] Specifically, the size of the ceiling antenna cover is

[0014] Beneficial effects of the utility model:

[0015] The utility model uses aluminum sheets to replace part of the high-frequency printed circuit board, which greatly reduces the antenna cost while maintaining the electrical performance indicators of the antenna unchanged. The bottom plate has a boss structure, so that after assembly, a cavity with a high middle and low four sides is formed between the vibrator part on the high-frequency printed circuit board and the bottom plate. The cavity optimizes the impedance matching of the 1710-6000MHz frequency band and can maintain the electrical performance indicators of other frequency bands unchanged. The entire antenna has a wide frequency band width, a simple structure, and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded view of a ceiling antenna according to an embodiment of the utility model;

[0017] Figure 2 is a front view of a ceiling antenna according to an embodiment of the utility model;

[0018] Figure 3 A top view of a ceiling antenna according to an embodiment of the utility model;

[0019] Figure 4 A bottom view of a ceiling antenna according to an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of the installation of a ceiling antenna according to an embodiment of the utility model;

[0021] Figure 6 A schematic diagram of the dimensions of an aluminum sheet according to an embodiment of the utility model;

[0022] Figure 7 A schematic diagram of the dimensions of a printed circuit board according to an embodiment of the utility model;

[0023] Figure 8 A schematic structural diagram of an outer cover according to an embodiment of the utility model;

[0024] Fig. 9A front view of a base plate according to an embodiment of the utility model;

[0025] Fig.10 yes Fig. 9 Enlarged view of the cross section along AA. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-10 The ceiling antenna of the utility model comprises: a bottom plate 1, an aluminum sheet 2, a small hole screw wire sleeve 3, a small hole screw wire claw 4, an antenna cable 5, a printed circuit board 6, and an outer cover 7.

[0028] There are multiple bosses in the first and second regions of the bottom plate 1, and the center of the bottom plate 1 has a mounting hole; the aluminum sheet 2 is provided with a hole position that matches the boss in the first region of the bottom plate, and the aluminum sheet 2 is fixedly mounted on the bottom plate 1 through the hole position and the boss in the first region by hot melting, and the aluminum sheet 2 serves as a vibrator of the first frequency bandwidth. The antenna cable 5 passes through the small hole screw wire sleeve 3, the small hole screw wire claw 4 and the mounting hole in the center of the bottom plate in sequence; the printed circuit board 6 is arranged above the boss in the second region of the bottom plate 1 (i.e., the bottom plate boss 64), and the boss in the second region of the bottom plate 1 is used to support the printed circuit board 6; the cable core of the antenna cable 5 passes through the pad of the printed circuit board 6 and is welded to the front of the printed circuit board 6, and the cable net is welded on the back of the printed circuit board 6. The printed circuit board 6 is fixed to the bottom plate 1 through a through hole, and vibrators of the second and third frequency bandwidths are arranged on the printed circuit board 6, and the first frequency bandwidth is less than the second frequency bandwidth and the third frequency bandwidth; the outer cover 7 is fixed to the bottom plate 1 by a buckle.

[0029] In the utility model, the first frequency band width is 380-520MHz, the second frequency band width is 698-960MHz, and the third frequency band width is 1710-6000MH. Two nylon screws are used to pass through the through holes of the bottom plate 1 and the printed circuit board 6 in turn, and a nylon nut is screwed on the nylon screw on one side of the printed circuit board 6 to clamp the printed circuit board 6 and the bottom plate 1. After the stainless steel self-tapping screw is passed through the through hole on the bottom plate 1, the stainless steel screw is tightened on the column on the outer cover 7 to fix the outer cover to the bottom plate. The small hole screw wire claw 4 is inserted into the round hole structure reserved on the bottom plate 1 to tighten the small hole screw wire claw 4. The small hole screw wire sleeve 3 is clamped on the bottom plate 1 by a buckle to prevent the small hole screw wire claw 4 from loosening.

[0030] Specifically, the plurality of bosses ( Fig. 9 The three bosses are heat-melted and pressed together in the aluminum sheet 2 (three are taken as an example). After cooling, the aluminum sheet 2 is fixed on the bottom plate 1. The aluminum sheet 2 is used as a 380-520MHz vibrator. The antenna cable 5 is passed through the small hole screw wire sleeve 3, and then through the small hole screw wire claw 4 and then through the mounting hole in the center of the bottom plate. Then the cable core of the antenna cable 5 is passed through the pad of the printed circuit board 6, and the cable core is soldered on the front side of the printed circuit board 6 with solder, and the cable net is soldered on the back side of the printed circuit board 6. Use two nylon screws to pass through the through holes on the bottom plate 1, and then through the through holes on the printed circuit board 6. On one side of the printed circuit board 6, a nylon nut is screwed on the nylon screw to clamp the printed circuit board 6 and the bottom plate 1. Then, the outer cover 7 is initially fixed to the bottom plate 1 through the 8 buckles on the outer cover 7. Use two stainless steel self-tapping screws to pass through the through holes on the bottom plate, and tighten the stainless steel screws on the columns on the outer cover 7 to completely clamp the outer cover 7 and the bottom plate 1. Then insert the small hole screw wire claw 4 into the reserved round hole structure on the bottom plate 1, which tightens the small hole screw wire claw 4, thereby clamping the antenna cable 5 and fixing the wire cable 5. The small hole screw wire sleeve 3 is clamped on the bottom plate 1 through a buckle to prevent the small hole screw wire claw 4 from loosening. In this way, the assembly of the ceiling antenna is completed.

[0031] In the present invention, the size and shape of the aluminum sheet 2 can be found in Figure 6 As shown, the aluminum sheet 2 is used as a 380-520MHz vibrator to replace the high-frequency printed circuit board, which can greatly reduce the cost. Due to the limitation of the circular outer cover, one side of the aluminum sheet 2 is processed with an arc.

[0032] The shape of the printed circuit board 6 can be seen in Figure 7 As shown, Figure 7 The front and back sides of the printed circuit board 6 are shown in sequence. In the present utility model, Fig. 9 As shown, the printed circuit board 6 includes: a first fixing point 61, a second fixing point 62 and a third fixing point 63, the first fixing point 61, the second fixing point 62 and the third fixing point 63 are arc-shaped, and the printed circuit board 6 is fixed on the base plate 1 through through holes at the first fixing point 61, the second fixing point 62 and the third fixing point 63.

[0033] Specifically, Figure 9-10As shown, the positional relationship between the bottom plate boss 64 (i.e., the boss in the second area of ​​the bottom plate) and the printed circuit board 6 is shown in the figure. The bottom plate boss 64 cooperates with the first fixing point 61, the second fixing point 62 and the third fixing point 63 of the printed circuit board 6, so that the assembled printed circuit board 6 is in an arc shape. This arc structure forms a cavity with a high middle and low sides (the highest point is 2mm and the lowest point is 0mm) between the 1710-6000MHz vibrator part of the printed circuit board 6 and the bottom plate 1. The role of this cavity is to optimize the impedance matching of the 1710-6000MHz frequency band, so that the standing wave of the 1710-6000MHz frequency band is optimized from >3.0 of the conventional planar structure to ≤1.8. At the same time, this arc structure does not affect the electrical performance indicators of other frequency bands (380-520MHz, 698-960MHz).

[0034] That is to say, in the present invention, the 698-960MHz vibrator and the 1710-6000MHz vibrator are integrated on a printed circuit board 6, and the 380-520MHz vibrator is realized by using an aluminum sheet 2 instead of a high-frequency printed circuit board. The combination of the two constitutes the antenna radiator, realizing communication with a frequency bandwidth of 380-6000MHz.

[0035] In addition, the antenna of the utility model is ultra-thin in design, and the size of the ceiling antenna cover is exist Within the dimensions, all electrical performance indicators meet the design and use requirements.

[0036] The installation of the entire ceiling antenna can be found in Figure 5 As shown, Figure 5 In the figure, 10 is the ceiling, 20 is the mounting nut, Figure 5 The installation shown is performed using mounting nuts. Of course, it can also be installed using expansion screws, depending on actual needs.

[0037] In summary, according to the ceiling antenna of the utility model, aluminum sheets are used to replace part of the high-frequency printed circuit board, which greatly reduces the antenna cost while maintaining the electrical performance of the antenna unchanged. There is a boss structure on the bottom plate, so that after assembly, a cavity with a high middle and low four sides is formed between the high-frequency printed circuit board and the bottom plate. The cavity optimizes the impedance matching of the 1710-6000MHz frequency band and can keep the electrical performance indicators of other frequency bands unchanged. The entire antenna has a wide bandwidth, a simple structure, and is easy to assemble.

[0038] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A ceiling antenna, characterized in that: include: A bottom plate, wherein a plurality of bosses are arranged in a first area and a second area of ​​the bottom plate, and a mounting hole is provided at the center of the bottom plate; An aluminum sheet, wherein a hole is provided on the aluminum sheet to match the boss of the first region of the bottom plate, and the aluminum sheet is fixedly mounted on the bottom plate by hot-melting through the hole and the boss of the first region, and the aluminum sheet serves as an oscillator of a first frequency bandwidth; Small hole screw thread sleeve; Small hole screw wire claw; An antenna cable, the antenna cable sequentially passing through the small hole screw wire sleeve, the small hole screw wire claw and the mounting hole in the center of the bottom plate; A printed circuit board, wherein the printed circuit board is arranged above the boss in the second area of ​​the bottom plate, the cable core of the antenna cable passes through the pad of the printed circuit board and is welded to the front side of the printed circuit board, the cable net is welded to the back side of the printed circuit board, the printed circuit board is fixed to the bottom plate through a through hole, and the printed circuit board is provided with vibrators of a second frequency bandwidth and a third frequency bandwidth, wherein the first frequency bandwidth is less than the second frequency bandwidth and less than the third frequency bandwidth; The outer cover is fixed to the bottom plate by buckles.

2. The ceiling antenna according to claim 1, characterized in that: The printed circuit board includes: a first fixing point, a second fixing point and a third fixing point, the first fixing point, the second fixing point and the third fixing point are in an arc shape, and the printed circuit board is fixed to the base plate through through holes at the first fixing point, the second fixing point and the third fixing point.

3. The ceiling antenna according to claim 1, characterized in that: Two nylon screws are used to pass through the through holes of the bottom plate and the printed circuit board in sequence, and a nylon nut is screwed onto the nylon screws on one side of the printed circuit board to clamp the printed circuit board and the bottom plate.

4. The ceiling antenna according to claim 1, characterized in that: After stainless steel self-tapping screws are passed through the through holes on the bottom plate, the stainless steel screws are tightened on the columns on the outer cover to fix the outer cover to the bottom plate.

5. The ceiling antenna according to claim 1, characterized in that: The small hole screw wire claw is inserted into the round hole structure reserved on the bottom plate to tighten the small hole screw wire claw.

6. The ceiling antenna according to claim 5, characterized in that: The small hole screw wire sleeve is clamped on the bottom plate through a buckle to prevent the small hole screw wire claw from loosening.

7. The ceiling antenna according to any one of claims 1 to 6, characterized in that: The size of the ceiling antenna cover is

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