Antenna structure, antenna array and communication equipment

Abstract

The utility model discloses an antenna structure, an antenna array and communication equipment, and a grounding plate comprises a grounding plate which is provided with a feed structure; one end of the main body structure is connected with the feed structure; a first metal layer is arranged on one side of the main body structure; a first radiation structure, wherein the first radiation structure and the grounding plate are arranged at an interval; the other end of the main body structure is connected with the first radiation structure; a second metal layer is arranged on one side, back to the grounding plate, of the main body structure; and the second radiation structure is arranged between the first radiation structure and the grounding plate, and is connected with the first radiation structure and the grounding plate.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna structure, an antenna array and a communication device. Background Art

[0002] Antennas are widely used in wireless communication devices. However, as the demand for frequency bands in wireless communication becomes higher and higher, antennas need to be equipped with multiple radiation structures, and each radiation structure needs to be equipped with a feeding structure, which leads to the deficiency of discrete setting of the feeding structure, which is not conducive to the setting of the antenna in the wireless communication device. Utility Model Content

[0003] The present application proposes an antenna structure, an antenna array and a communication device, aiming to solve the technical problem of discrete setting of the antenna feeding structure in the prior art.

[0004] The present application proposes an antenna structure, comprising:

[0005] A grounding plate, wherein a feeding structure is arranged on the grounding plate;

[0006] A main structure, wherein a first metal layer is provided on the main structure; the first metal layer is electrically connected to the feeding structure;

[0007] A first radiation structure is provided, wherein the first radiation structure is spaced apart from the ground plane; the main structure is insulated and connected to the first radiation structure; a second metal layer is provided on the main structure, and the second metal layer is electromagnetically coupled to the first metal layer.

[0008] Optionally, the antenna structure further includes a second radiation structure, one end of the second radiation structure is electrically connected to the second metal layer, and the other end of the second radiation structure is electrically connected to the ground plane.

[0009] Optionally, the operating frequency of the antenna structure is 5.15 GHz-7.15 GHz and 2.4 GHz-2.5 GHz.

[0010] Optionally, the length of the second radiation structure is 14-17 mm, and the width or diameter of the second radiation structure is 3-5 mm; and / or

[0011] The length of the first radiation structure is 38 to 39 mm, the width of the first radiation structure is 25 to 27 mm; and / or the length of the main structure is 14-17 mm.

[0012] Optionally, the first radiation structure is arranged in parallel with the ground plane.

[0013] Optionally, the main structure and the ground plane are perpendicular to each other; and / or the second radiation structure and the ground plane are perpendicular to each other.

[0014] Optionally, the main structure includes a top edge and a bottom edge, the top edge and the bottom edge are arranged opposite to each other; the bottom edge is connected to the ground plate through the feeding structure; the main structure is also provided with a connecting block, which is arranged on the top edge; the connecting block is an insulating part; and the connecting block is connected to the first radiation structure.

[0015] Optionally, the first metal layer includes a first metal region, a second metal region and a third metal region; the second metal region is electrically connected to the feeding structure; the first metal region and the third metal region are respectively connected to two ends of the second metal region, extending away from each other toward the first radiation structure.

[0016] In a second aspect, an embodiment of the present application further proposes an antenna array, which includes the antenna structure as described above.

[0017] In a third aspect, an embodiment of the present application further proposes a communication device, which includes the antenna structure as described above or the antenna array as described above.

[0018] In the technical solution of the embodiment of the present application, a feeding structure is arranged on the ground plate, and the feeding structure is electrically connected to the first metal layer arranged on the main structure to achieve transmission of the first signal; the antenna structure also includes a first radiating structure, and the first radiating structure is insulated and connected to the main structure, and a second metal layer is arranged on the first radiating structure, and the second metal layer and the first metal layer are electromagnetically coupled to achieve transmission of the second signal; and then the technical solution provided by the embodiment of the present application can achieve transmission of two signals by only setting one feeding structure, which effectively solves the technical problem in the prior art that each radiating structure needs to be set with a feeding structure, resulting in the lack of discrete setting of the feeding structure, reduces the setting of the feed source, and is conducive to the setting of the antenna structure on the wireless communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of an antenna structure provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0022] Figure 3 A schematic diagram of the structure of the main structure and the first metal layer in the antenna structure provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of a first metal layer and a feeding structure in an antenna structure provided in an embodiment of the present application;

[0024] Figure 5 FIG. 1 is a schematic diagram of a curve between frequency and gain of an antenna structure according to an embodiment of the present application.

[0025] Reference numerals list

[0026] 10 Antenna structure 600 Second radiating structure 100 Ground Plate 700 Feed structure 200 Main structure 210 Connection Block 300 First metal layer 310 First metal area 400 The first radiation structure 320 Second metal region 500 Second metal layer 330 The third metal region DETAILED DESCRIPTION

[0027] 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 only 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.

[0028] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 this application can be understood according to specific circumstances.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] Combination Figure 1 and Figure 2 As shown, the embodiment of the present application proposes an antenna structure 10, including:

[0032] A ground plate 100, on which a feeding structure 700 is arranged;

[0033] A main structure 200, wherein a first metal layer 300 is disposed on the main structure 200; the first metal layer 300 is electrically connected to the feeding structure 700;

[0034] A first radiation structure 400 is spaced apart from the ground plane 100 ; the main structure 200 is insulated and connected to the first radiation structure 400 ; a second metal layer 500 is disposed on the main structure 200 , and the second metal layer 500 is electromagnetically coupled to the first metal layer 300 .

[0035] In the technical solution of the embodiment of the present application, a feeding structure 700 is arranged on the ground plate 100, and the feeding structure 700 is electrically connected to the first metal layer 300 arranged on the main structure 200 to achieve transmission of the first signal; the antenna structure 10 also includes a first radiation structure 400, and the first radiation structure 400 is insulated and connected to the main structure 200, and a second metal layer 500 is arranged on the first radiation structure 400, and the second metal layer 500 and the first metal layer 300 are electromagnetically coupled to achieve transmission of the second signal; and then the technical solution provided by the embodiment of the present application can achieve transmission of two signals by only setting a feeding structure 700, which effectively solves the technical problem in the prior art that each radiation structure needs to be set with a feeding structure 700, resulting in the lack of discrete setting of the feeding structure 700, reduces the setting of the feed source, and is conducive to the setting of the antenna structure 10 on the wireless communication device.

[0036] In the technical solution of the embodiment of the present application, the first metal layer 300 and the second metal layer 500 are generally copper layers; in some embodiments, the first metal layer 300 and the second metal layer 500 may also be other conductive metal layers.

[0037] Further, in the technical solution of the embodiment of the present application, the main structure 200 and the first radiation structure 400 both use a FR4 substrate. The first metal layer 300 and the second metal layer 500 are respectively arranged on the surface of the FR4 substrate. In some embodiments and technical solutions, the main structure 200 is located between the first radiation structure 400 and the ground plate 100, and the second metal layer 500 is usually arranged on the side of the first radiation structure 400 facing away from the ground plate 100, so as to avoid short circuit between the first metal layer 300 and the second metal layer 500 during assembly, and also facilitate the transmission of the second signal.

[0038] In the technical solution of the embodiment of the present application, the transmission can be understood as receiving, sending, or both receiving and sending.

[0039] In the technical solutions of some embodiments, the second metal layer 500 can be grounded to achieve the transmission of the feeding current of the antenna. The feeding structure 700 inputs current to the first metal layer 300, the first metal layer 300 and the second metal layer 500 are electromagnetically coupled, the second metal layer 500 generates current, and the second metal layer 500 is grounded to achieve current transmission.

[0040] As the technical solution of the above embodiment, Figure 1 As shown, the antenna structure 10 further includes a second radiation structure 600, one end of which is electrically connected to the second metal layer 500, and the other end of which is electrically connected to the ground plate 100. In the technical solution in the embodiment, the antenna structure 10 further includes a second radiation structure 600, one end of which is electrically connected to the second metal layer 500, and the other end of which is electrically connected to the ground plate 100, so as to realize current transmission and participate in the second signal transmission together.

[0041] In some embodiments, a through hole is provided on the first radiation structure 400, and the second radiation structure 600 is electrically connected to the second metal layer 500 provided on the first radiation structure 400 through the through hole to achieve current transmission. Generally speaking, the first radiation structure 400 and the second radiation structure 600 are fixed by welding. The other end of the second radiation structure 600 is connected to the ground plate 100, such as by welding, to achieve grounding. In an embodiment, the second radiation structure 600 not only achieves current transmission, but also plays a role in supporting the first radiation structure 400.

[0042] As the technical solution of the above embodiment, in the technical solution of the embodiment of the present application, refer to Figure 5The curve of gain versus frequency shows that the antenna in the embodiment of the present application has good gain in the range of 5.15GHz-7.15GHz and good gain in the range of 2.4GHz-2.5GHz. Therefore, in the technical solution of the present application, the signal frequency of the antenna is 5.15GHz-7.15GHz and 2.4GHz-2.5GHz, and has the characteristics of dual-frequency operation.

[0043] As the technical solution of the above embodiment, after experimental verification, the length of the main structure 200, the length of the second radiation structure 600, that is, the gap size between the first radiation structure 400 and the ground plate 100 determines that the antenna structure 10 works between 5.15GHz-7.15GHz, and the length and width of the first radiation structure 400, and the length and width / diameter of the second radiation structure 600 determine that the antenna structure 10 is between 2.4GHz-2.5GHz. Specifically, as the technical solution of the above embodiment, the length of the second radiation structure 600 is 14-17mm, and the width or diameter of the second radiation structure 600 is 3-5mm. And / or the length of the first radiation structure 400 is 38 to 39mm, and the width of the first radiation structure 400 is 25 to 27mm; and / or the length of the main structure 200 is 14-17mm. The above dimensions can better meet the requirements of the antenna structure 10 to work between 5.15GHz-7.15GHz and 2.4GHz-2.5GHz.

[0044] In some embodiments, the second radiation structure 600 may be columnar, such as cylindrical, cuboid, etc. In some embodiments, the first radiation structure 400 is a semi-disc + square structure, and the width may be understood as the width of the square structure or the diameter of the semi-disc, and the length may be understood as the sum of the radius of the semi-disc and the length of the directional structure.

[0045] In some embodiments, the main structure 200 is a trapezoidal plate, and its length can be the height of the trapezoidal plate. Generally speaking, the main structure 200 is an isosceles trapezoidal structure, and its width can be understood as half of the sum of its two bases, usually 16-22 mm, such as 19 mm.

[0046] In some embodiments of the present application, the main structure 200, the ground plate 100 and the first radiation structure 400 are all FR4 substrates. A fourth metal layer is provided on the side of the ground plate 100 facing the first radiation structure 400, and the fourth metal layer is conducive to the stability of the signal reception. In some embodiments, the thickness of the main structure 200 and the first radiation structure 400 is 0.6-2 mm, such as 1 mm; the thickness of the ground plate 100 is set according to the specific situation, usually between 0.6-2 mm.

[0047] In the technical solution of the above embodiment, the first radiation structure 400 is arranged in parallel with the ground plane 100. In the embodiment, the parallel can be understood as being arranged substantially in parallel. The parallel arrangement of the first radiation structure 400 and the ground plane 100 facilitates resonance.

[0048] In the technical solution of the above embodiment, the first metal layer 300 and the second metal layer 500 are perpendicular to each other. In the embodiment, the main structure 200 is arranged vertically with the ground plane 100, and the main structure 200 is arranged parallel to the first radiation structure 400. The first metal layer 300 is arranged on the surface of the main structure 200, and the second metal layer 500 is arranged on the surface of the first radiation structure 400. The first metal layer 300 and the second metal layer 500 are arranged vertically to facilitate the excitation of vertical polarization performance, so that the antenna structure 10 has better radiation performance.

[0049] As the technical solution of the above embodiment, Figure 3 As shown, the main structure 200 includes a top side and a bottom side, the top side and the bottom side are arranged oppositely; the bottom side is connected to the ground plate 100 through the feed structure 700; the main structure 200 is also provided with a connection block 210, the connection block 210 is arranged on the top side; the connection block 210 is an insulating member; the connection block 210 is connected to the first radiation structure 400. In the technical solution of the embodiment, the bottom side of the main structure 200 is connected to the ground plate 100 through the feed structure 700, so that the main structure 200 is supported. The connection block 210 is arranged on the top side, and a connection block 210 is arranged on the top side, the connection block 210 is insulated, and the connection block 210 is connected to the first radiation structure 400, so as to fix the main structure 200 while avoiding the short circuit between the first metal layer 300 and the second metal layer 500.

[0050] In some embodiments, a fixing hole adapted to the connection block 210 is provided on the first radiation structure 400 , and the connection block 210 is inserted into the connection hole. Generally speaking, the connection block 210 and the fixing hole are tightly matched with each other.

[0051] As the technical solution of the above embodiment, Figure 3As shown, the first metal layer 300 includes a first metal region 310, a second metal region 320 and a third metal region 330; the second metal region 320 is electrically connected to the feeding structure 700; the first metal region 310 and the third metal region 330 are respectively connected to the two ends of the second metal region 320, and extend away from each other toward the first radiation structure 400. That is, in the embodiment, the first metal layer 300 is in a V-shaped structure. There is a gap between the first metal region 310 and the third metal region 330, so that the first metal layer 300 arranged in a V-shape is conducive to resonance.

[0052] In the embodiment, the feeding structure 700 is electrically connected to the second metal region 320, and the current is transmitted to the first metal region 310 and the third metal region 330 through the second metal region 320, and is transmitted toward the second metal layer 500, so as to facilitate electromagnetic coupling between the first metal layer 300 and the second metal layer 500. In the embodiment, the third metal region 330 and the first metal region 310 extend to the root of the connection block 210, but are not covered on the connection block 210.

[0053] In an embodiment, Figure 4 As shown, the main structure 200 is provided with a first metal layer 300 on both sides in the thickness direction, and the second metal area 320 between the two first metal layers 300 is connected by a third metal layer covering the bottom edge of the main structure 200; the feeding structure 700 is electrically connected to the third metal layer, and the current is transmitted to the second metal areas 320 on both sides through the third metal layer.

[0054] The embodiment of the present application also provides an antenna array, which includes a plurality of antenna structures 10. The antenna structure 10 adopts some or all of the above embodiments, so the antenna array has some or all of the technical advantages of the above embodiments. The antenna structures 10 form an antenna array to form a large-scale antenna array.

[0055] The present application also provides a communication device, the communication device antenna structure 10 or antenna array. The antenna structure 10 or antenna array adopts a part or all of the above embodiments, so the communication device has some or all of the technical advantages of the above embodiments.

[0056] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An antenna structure, characterized in that: include: A grounding plate, wherein a feeding structure is arranged on the grounding plate; A main structure, wherein a first metal layer is provided on the main structure; The first metal layer is electrically connected to the feeding structure; a first radiation structure, wherein the first radiation structure is spaced apart from the ground plane; The main structure is insulated and connected to the first radiation structure; a second metal layer is provided on the main structure, and the second metal layer is electromagnetically coupled to the first metal layer.

2. The antenna structure according to claim 1, characterized in that: The antenna structure further includes a second radiation structure, one end of the second radiation structure is electrically connected to the second metal layer, and the other end of the second radiation structure is electrically connected to the ground plate.

3. The antenna structure according to claim 1 or 2, characterized in that: The operating frequencies of the antenna structure are 5.15 GHz-7.15 GHz and 2.4 GHz-2.5 GHz.

4. The antenna structure according to claim 2, characterized in that: The length of the second radiation structure is 14-17 mm, and the width or diameter of the second radiation structure is 3-5 mm; and / or The length of the first radiation structure is 38 to 39 mm, the width of the first radiation structure is 25 to 27 mm; and / or the length of the main structure is 14-17 mm.

5. The antenna structure according to claim 1 or 2, characterized in that: The first radiation structure is arranged in parallel with the ground plate.

6. The antenna structure according to claim 1 or 2, characterized in that: The first metal layer and the second metal layer are perpendicular to each other.

7. The antenna structure according to claim 1 or 2, characterized in that: The main structure includes a top edge and a bottom edge, and the top edge and the bottom edge are arranged opposite to each other; the bottom edge is connected to the ground plate through the feeding structure; the main structure is also provided with a connecting block, and the connecting block is arranged on the top edge; the connecting block is an insulating member; the connecting block is connected to the first radiation structure.

8. The antenna structure according to claim 1 or 2, characterized in that: The first metal layer includes a first metal region, a second metal region and a third metal region; the second metal region is electrically connected to the feeding structure; the first metal region and the third metal region are respectively connected to two ends of the second metal region, and extend away from each other toward the first radiation structure.

9. An antenna array, characterized in that: The antenna array comprises a plurality of antenna structures according to any one of claims 1 to 8.

10. A communication device, characterized in that: The communication device comprises the antenna structure according to any one of claims 1 to 8 or the antenna array according to claim 9.

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