Antenna structure

Abstract

The embodiment of the utility model discloses an antenna structure. An antenna comprises a floor, a first radiator and a second radiator. The first radiator and the second radiator are respectively connected with the floor. The first radiator comprises a first branch knot, a second branch knot and a third branch knot, and the second radiator is arranged on the side, provided with the third branch knot, of the first radiator. The second radiating body comprises a bending structure and a fourth branch knot, a first end of the bending structure is provided with a grounding branch knot and is connected with the floor, a second end of the bending structure is provided with a bending branch knot and is connected with the fourth branch knot, the bending branch knot and the grounding branch knot are obliquely arranged, and the bending branch knot and the fourth branch knot are also obliquely arranged. And the width of the fourth branch knot is gradually reduced from one end connected with the bending structure to one end far away from the bending structure. According to the embodiment of the utility model, through the arrangement, the bent branch knot and the fourth branch knot of the second radiator are coupled with the third branch knot of the first radiator, the resonance bandwidth of the antenna structure is increased, and the radiation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless communications, in particular to an antenna structure. Background Art

[0002] With the development of technology, people have also put forward higher requirements for the appearance and size of electronic products. Taking desktop computers as an example, desktop computers are developing in the direction of pursuing larger screens and higher screen-to-body ratios. As the screen size increases, the design position of the antenna is transferred to the base, and the antenna is far away from the chip, so it is necessary to further improve the radiation efficiency of the antenna so that the electronic device has good communication performance. In addition, with the rapid update and iteration of communication technology, the requirements for communication terminals on today's electronic devices are gradually becoming mainstream with large capacity and high speed. In recent years, with the development of WiFi 6E and WiFi7 technology, the bandwidth requirements of electronic products for antennas have increased. Utility Model Content

[0003] In view of this, an object of the present invention is to provide an antenna structure with higher radiation efficiency.

[0004] An embodiment of the utility model provides an antenna structure, which includes: a floor; a first radiator connected to the floor, the first radiator including a first branch, a second branch and a third branch, one end of the first branch is connected to the floor, the other end of the first branch extends in a direction away from the floor, the second branch and the third branch are both connected to the other end of the first branch, and the second branch and the third branch are arranged on opposite sides of the first branch; and a second radiator connected to the floor, the second radiator is arranged at an angle to the floor, the second radiator is arranged on a side of the first radiator having the third branch, the second radiator includes a bending structure connected to the floor and a fourth branch connected to the bending structure, the width of the fourth branch away from the bending structure gradually decreases, and the bending structure and the fourth branch are arranged at an angle.

[0005] Furthermore, the bending structure includes a grounding branch and at least one bending branch, the first end of the bending structure has a grounding branch and is connected to the floor, the second end of the bending structure extends away from the grounding branch and is connected to a fourth branch, the bending branch is arranged between the grounding branch and the fourth branch, a bending branch is connected to the grounding branch and is inclined between the grounding branches, and the end of the fourth branch away from the bending structure is an open end.

[0006] Furthermore, the bending structure includes a bending branch, one end of the grounding branch is connected to the floor, the other end of the grounding branch extends away from the floor, one end of the bending branch is connected to the other end of the grounding branch, the other end of the bending branch extends toward the floor, one end of the fourth branch is connected to the other end of the bending branch, the other end of the fourth branch extends away from the floor, and the bending branch and the fourth branch are inclined relative to each other.

[0007] Furthermore, the bending structure includes at least two bending branches, at least two bending branches are connected in sequence, two adjacent bending branches are arranged at an angle, the bending branch and the fourth branch are arranged at an angle, one end of the grounding branch is connected to the floor, and the other end of the grounding branch extends away from the floor.

[0008] Furthermore, the antenna structure includes a plurality of second radiators, which are arranged at intervals and respectively connected to the floor.

[0009] Furthermore, the floor, the first radiator and the second radiator are located on the same plane.

[0010] Furthermore, the second branch and the third branch are located in a first plane, the first plane is parallel to or intersects with the plane where the floor is located, the third branch includes two adjacently arranged coupling edges, and the second radiator is arranged close to at least one coupling edge.

[0011] Further, the first branch section includes a first main section, a second main section and a third main section, the first main section connects the second main section and the floor, the second main section connects the first main section and the third main section, the third main section connects the second branch section, the third branch section and the second main section, and the second branch section and the third branch section are arranged on opposite sides of the third main section.

[0012] Further, the first main section is coplanar with the floor; or the first main section, the second branch section and the third branch section are coplanar; or the first main section intersects with the floor, the first main section intersects with the plane where the second branch section is located, and the first main section intersects with the plane where the third branch section is located.

[0013] Furthermore, the first branch also includes a first branch, a second branch and a third branch, the first branch has a hypotenuse, the first branch connects the first main section and the floor, the third branch is connected to the first main section, the first branch and the third branch are arranged on the side of the first main section away from the second radiator, the second branch connects the first main section and the floor, and the second branch is arranged on the side of the first main section close to the second radiator.

[0014] Furthermore, the third branch, the first main section, the second main section, the third main section and the second branch node form a first gap having an opening, and the second branch, the first main section, the second main section and the third main section form a second gap having an opening, and the opening of the second gap is arranged opposite to the opening of the first gap.

[0015] Furthermore, the second branch includes a connecting portion and an extending portion, the connecting portion connects the extending portion and the first branch, and a width of the connecting portion is smaller than a width of the extending portion.

[0016] The utility model embodiment discloses an antenna structure, which includes a floor, a first radiator and a second radiator. The first radiator and the second radiator are connected to the floor respectively, the first radiator includes a first branch, a second branch and a third branch, and the second radiator is arranged on the side of the first radiator having the third branch. The second radiator includes a bending structure and a fourth branch, the first end of the bending structure has a grounding branch and is connected to the floor, the second end of the bending structure has a bending branch and is connected to the fourth branch, the bending branch and the grounding branch are arranged at an angle, and the bending branch and the fourth branch are also arranged at an angle. The width of the fourth branch gradually decreases from the end connected to the bending structure to the end away from the bending structure. Through the above arrangement, the utility model embodiment enables the bending branch and the fourth branch of the second radiator to form a coupling with the third branch of the first radiator, thereby increasing the resonant bandwidth of the antenna structure and increasing the radiation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the antenna structure provided in the first embodiment of the present utility model from a first viewing angle;

[0019] Figure 2 is a schematic diagram of a three-dimensional structure of the antenna structure provided in the first embodiment of the present utility model from a second viewing angle;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the antenna structure provided in the second embodiment of the present utility model;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the antenna structure provided in the third embodiment of the present utility model;

[0022] Figure 5 This is a partial schematic diagram of the antenna structure at A provided in the fourth embodiment of the present utility model;

[0023] Figure 6 is a front view of the antenna structure provided by the fourth embodiment of the present utility model;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the antenna structure and the feeder provided in the first embodiment of the present utility model from a third viewing angle;

[0025] Figure 8It is a schematic diagram of the three-dimensional structure of the antenna structure and the feeder provided in the first embodiment of the present utility model from a fourth viewing angle;

[0026] Fig. 9 It is a comparison diagram of the S parameters of the antenna structure provided in the first embodiment of the utility model and the antenna of the comparative example;

[0027] Fig.10 It is a comparison chart of the darkroom test data of the antenna structure provided in the first embodiment of the utility model and the antenna of the comparative example.

[0028] Description of reference numerals:

[0029] 1- floor; 11- first connecting section; 12- second connecting section;

[0030] 2-first radiator; 21-first branch; 211-first main section; 212-second main section; 213-third main section; 214-first branch; 215-second branch; 216-third branch; 22-second branch; 221-connecting part; 222-extension part; 23-third branch; 24-first gap; 241-first section; 242-second section; 243-third section; 25-second gap; 26-third gap;

[0031] 3, 3a, 3b, 3c - second radiator; 31 - bending structure; 311 - grounding branch; 312, 312a, 312b, 312c - bending branch; 32 - fourth branch;

[0032] 4-feeder; 41-first feeding section; 42-second feeding section. DETAILED DESCRIPTION

[0033] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the detailed description of the present application below, some specific details are described in detail. It is possible for those skilled in the art to fully understand the present application without the description of these details. In order to avoid confusing the essence of the present application, known methods, processes, flows, components and circuits are not described in detail.

[0034] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0035] Unless otherwise clearly defined and specified, 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 this application can be understood according to specific circumstances.

[0036] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0037] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0038] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0039] In the description of the present application, the "end" in the first end / second end / feeding end of the antenna radiator cannot be narrowly understood as a point, but can also be considered as a section of the radiator including the end point on the antenna radiator; nor can it be narrowly understood as an end point or end that is necessarily disconnected from other radiators, but can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end" may include the end point of the antenna radiator at the gap. For example, the first end of the antenna radiator can be considered as a section of the radiator within 5 mm (for example, 2 mm) from the gap. In one embodiment, the "end" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feeding end may be a coupling area on the antenna radiator that is coupled to a feeding structure or a feeding circuit (for example, an area facing a portion of the feeding circuit).

[0040] like Figure 1-Figure 6 As shown, the antenna structure includes a floor 1, a first radiator 2 and a second radiator 3. The first radiator 2 and the second radiator 3 are connected to the floor 1 respectively. The first radiator 2 includes a first branch 21, a second branch 22 and a third branch 23. The first branch 21 is used for feeding, the second branch 22 is used to control the low frequency 2.4G, and the third branch 23 is used to control the high frequency 5G. The second radiator 3 is arranged close to the side of the first radiator 2 having the third branch 23, and the second radiator 3 includes a bending structure 31 and a fourth branch 32, and the bending structure 31 includes a grounding branch 311 and at least one bending branch 312. The grounding branch 311 is coupled with the feed line 4, and the bending branch 312 is coupled with the third branch 23, and the fourth branch 32 is coupled with the third branch 23, thereby increasing the resonance bandwidth of the antenna structure and increasing the radiation efficiency. The first end of the bending structure 31 has a grounding branch 311 and is connected to the floor 1. The second end of the bending structure 31 extends in a direction away from the grounding branch 311 and is connected to the fourth branch 32. The bending branch 312 is arranged between the grounding branch 311 and the fourth branch 32. The end of the fourth branch 32 away from the bending structure 31 is an open end, and the width of the fourth branch 32 gradually decreases from the end connected to the bending structure 31 to the open end. That is, the bending structure 31 and the fourth branch 32 constitute a lightning-like radiation structure, the grounding branch 311 and the bending branch 312 are both a section of the straight structure of the lightning-shaped structure, and the fourth branch 32 is the end of the lightning-shaped structure. It should be noted that the open end is relative to other conductors, and the open end is not electrically connected to other conductors. It should be understood that in some embodiments, other conductors can be coupled and connected through the open end, and coupling energy (which can be understood as transferring current) can be transferred.

[0041] Further, the fourth branch 32 may be an axisymmetric structure, and the width of one end of the fourth branch 32 close to the bending structure 31 is greater than the width of the open end of the fourth branch 32. The open end may be a sharp angle, so that the front of the fourth branch 32 is a triangle; or the open end may be a flat angle, so that the front of the fourth branch 32 is a trapezoid.

[0042] In the first embodiment of the present invention, the antenna structure includes a second radiator 3, and the bending structure 31 is arranged obliquely relative to the floor 1. The bending structure 31 includes a grounding branch 311 and a bending branch 312. Figure 1 and Figure 2As shown, the second radiator 3 and the floor 1 are located in two planes, and the plane where the second radiator 3 is located intersects with the plane where the floor 1 is located. In this embodiment, the plane where the second radiator 3 is located is perpendicular to the plane where the floor 1 is located. One end of the grounding branch 311 is connected to the floor 1, and the other end of the grounding branch 311 extends in a direction away from the floor 1. The grounding branch 311 is tilted relative to the floor 1, that is, the axis of the grounding branch 311 along the length direction is not perpendicular to the axis of the plane where the floor 1 is located. Specifically, the angle between the side wall of the grounding branch 311 away from the first radiator 2 and the plane where the floor 1 is located is an acute angle. One end of the bending branch 312 is connected to the other end of the grounding branch 311, and the other end of the bending branch 312 extends in a direction close to the floor 1, that is, the extension line of the axis of the grounding branch 311 intersects with the extension line of the axis of the bending branch 312. In addition, the axis of the bending branch 312 along the length direction is not perpendicular to the axis of the plane where the floor 1 is located. One end of the fourth branch 32 is connected to the other end of the bent branch 312, and the other end of the fourth branch 32 extends in a direction away from the floor 1. The bent branch 312 and the fourth branch 32 are arranged at an angle, that is, the axis of the fourth branch 32 along the length direction is inclined to the axis of the bent branch 312 along the length direction, and the extension line of the axis of the fourth branch 32 intersects with the extension line of the axis of the bent branch 312. The extension line of the axis of the fourth branch 32 along the length direction is inclined to the axis of the plane where the floor 1 is located. The grounding branch 311 and the fourth branch 32 extend in approximately parallel directions and are respectively connected to both sides of the bent branch 312, and the width of the fourth branch 32 gradually decreases from one end close to the bent branch 312 to one end away from the bent branch 312, so that the second radiator 3 forms a lightning-like structure.

[0043] In the second embodiment provided by the present utility model, the antenna structure includes two second radiators 3, and the structure of each second radiator 3 can be the same as the structure of the second radiator 3 in the first embodiment. Figure 3 As shown, the two second radiators 3 are respectively a second radiator 3a and a second radiator 3b. The second radiator 3a is connected to the floor 1 and is arranged on the side of the first radiator 2 having the third branch 23, and the second radiator 3b is connected to the floor 1 and is arranged at a distance on the side of the second radiator 3a away from the third branch 23. That is, the two second radiators 3 are both arranged on the side of the first radiator 2 having the third branch 23, so that the bent branches 312 and the fourth branches 32 of the two second radiators 3 are coupled with the third branch 23, thereby improving the radiation efficiency of the overall antenna structure. The second radiator 3a and the second radiator 3b are in the same plane, and the spacing between the second radiator 3a and the second radiator 3b is not limited here, and can be selected according to the actual use needs of technicians in this field.

[0044] In the third embodiment provided by the present utility model, the antenna structure includes three second radiators 3, and the structure of each second radiator 3 can be the same as the structure of the second radiator 3 in the first embodiment. Figure 4 As shown, the three second radiators 3 are respectively the second radiator 3a, the second radiator 3b and the second radiator 3c. The second radiator 3a is connected to the floor 1 and is arranged on the side of the first radiator 2 having the third branch 23, the second radiator 3b is connected to the floor 1 and is arranged at a distance on the side of the second radiator 3a away from the third branch 23, and the second radiator 3c is connected to the floor 1 and is arranged at a distance on the side of the second radiator 3b away from the second radiator 3a. That is, the three second radiators 3 are all arranged on the side of the first radiator 2 having the third branch 23, so that the bent branches 312 and the fourth branches 32 of the three second radiators 3 are coupled with the third branch 23, thereby improving the radiation efficiency of the overall antenna structure. The second radiator 3a, the second radiator 3b and the second radiator 3c are in the same plane, and the spacing between the second radiator 3a and the second radiator 3b, and the spacing between the second radiator 3b and the second radiator 3c can be the same or different, which is not limited here and can be selected according to the actual use needs of technicians in this field.

[0045] In some embodiments, the structure of the second radiator 3 is the same as that of the second radiator 3 in the first embodiment, but the number of second radiators 3 is different. The number of second radiators 3 is not limited here, and may be four, five, six, etc., and may be selected according to the actual use needs of those skilled in the art. All second radiators 3 are located on one side of the third branch 23, and each second radiator 3 is connected to the floor 1 respectively. In addition, the plane where each second radiator 3 is located may be coplanar, intersecting or parallel to the plane where the floor 1 is located, which is not limited here. However, the central axis of each second radiator 3 is non-vertically arranged relative to the axis of the plane where the floor 1 is located.

[0046] In the fourth embodiment provided by the present utility model, the bending structure 31 includes three bending branches 312, and the three bending branches 312 are connected in sequence, and two connected bending branches 312 are arranged obliquely. Figure 5 and Figure 6As shown, the three bending branches 312 are bending branch 312a, bending branch 312b and bending branch 312c. One end of the grounding branch 311 is connected to the floor 1, and the other end of the grounding branch 311 extends in a direction away from the floor 1, and the axis of the grounding branch 311 along the length direction is not perpendicular to the axis of the plane where the floor 1 is located. One end of the bending branch 312a is connected to the other end of the grounding branch 311, and the other end of the bending branch 312a extends in a direction close to the floor 1, that is, the extension line of the axis of the grounding branch 311 intersects with the extension line of the axis of the bending branch 312a. The axes of adjacent bending branches 312 along the length direction are not colinear, and the extension lines of the axes of adjacent bending branches 312 along the length direction are inclined relative to each other. Specifically, the other end of the bending branch 312a is connected to one end of the bending branch 312b, and the other end of the bending branch 312b extends in a direction away from the floor 1, that is, the extension line of the axis of the bending branch 312b intersects with the extension line of the axis of the bending branch 312a. The other end of the bending branch 312b is connected to one end of the bending branch 312c, and the other end of the bending branch 312c extends in a direction close to the floor 1, that is, the extension line of the axis of the bending branch 312b intersects with the extension line of the axis of the bending branch 312c. The axes of all the bending branches 312 along the length direction are non-perpendicular to the axis of the plane where the floor 1 is located. One end of the fourth branch 32 is connected to the other end of the bending branch 312c, and the other end of the fourth branch 32 extends in a direction away from the floor 1. The bending branch 312c is arranged obliquely with the fourth branch 32, that is, the extension line of the axis of the fourth branch 32 intersects with the extension line of the axis of the bending branch 312c. The extension line of the axis of the fourth branch 32 along the length direction is arranged obliquely with the axis of the plane where the floor 1 is located. In this embodiment, the second radiator 3 is a lightning-shaped structure with more bending structures 31.

[0047] In some embodiments, the second radiator 3 has a plurality of bent branches 312, such as two, four, five, etc. The number of the bent branches 312 is not limited here and can be selected according to the actual use needs of those skilled in the art. The plurality of bent branches 312 are connected in sequence, and two adjacent bent branches 312 are arranged at an angle to each other, thereby forming a bent structure 31 with multiple turns. The head ends of the plurality of bent branches 312 connected in sequence are connected to the grounding branch 311, and the tail ends are connected to the fourth branch 32. The bent branch 312 and the fourth branch 32 are arranged close to the third branch 23, so that the bent branch 312 and the fourth branch 32 are coupled with the third branch 23 to improve the efficiency of the antenna structure.

[0048] Further, the antenna structure may have a plurality of second radiators 3, and the number of bent branches 312 in each second radiator 3 may be the same or different. Different second radiators 3 may be located in the same or different planes, and it is only necessary to ensure that the bent branches 312 in the second radiator 3 and the fourth branch 32 are close to the third branch 23. Also, the second radiator 3 and the floor 1 may be located in the same plane, or the plane where the second radiator 3 is located may intersect with the plane where the floor 1 is located. Each of the plurality of second radiators 3 may be located in the same or different planes. In addition, since the grounding branch 311 is a strip-shaped structure, in order to ensure the strength of the connection between the second radiator 3 and the floor 1, the connection between the grounding branch 311 and the floor 1 has a first connecting section 11 with a width greater than the width of the grounding branch 311. As Figure 2 As shown, when the grounding branch 311 and the floor 1 are not in the same plane, the first connecting section 11 is bent relative to the floor 1 .

[0049] The first radiator 2 includes a first branch 21, a second branch 22 and a third branch 23. One end of the first branch 21 is connected to the floor 1, and the other end of the first branch 21 is respectively connected to the second branch 22 and the third branch 23, and the second branch 22 and the third branch 23 are arranged on opposite sides of the other end of the first branch 21. The first branch 21, the second branch 22 and the third branch 23 can be located in the same plane or in different planes, that is, there can be a fold angle between the first branch 21, the second branch 22 and the third branch 23. The first branch 21 is connected to the floor 1, and the two are located in the same plane or there is a fold angle between the two. In order to improve the strength of the connection between the first branch 21 and the floor 1, the connection between the first branch 21 and the floor 1 has a second connection section 12 with a width greater than the first branch 21. When the first branch 21 and the floor 1 are not in the same plane, the second connection section 12 is bent relative to the floor 1. Since the first radiator 2 and the second radiator 3 are arranged close to each other, such as Figure 2 As shown, the first connecting section 11 and the second connecting section 12 can be arranged in a connected manner.

[0050] like Figure 5 As shown, the first branch 21 includes a first main section 211, a second main section 212 and a third main section 213. In this embodiment, the floor 1, the first main section 211, the second main section 212 and the third main section 213 are all approximately quadrilateral structures. The first main section 211 connects the second main section 212 and the floor 1, the first end of the first main section 211 (one of the long sides of the first main section 211) is connected to the floor 1, the second end of the first main section 211 (the other long side opposite to the first end of the first main section 211) is connected to the second main section 212, the second end portion of the first main section 211 is connected to the second main section 212, and the portion of the second end of the first main section 211 that is not connected to the second main section 212 is not connected to other structures. That is, as Figure 5As shown, the floor 1 is located at the lower side of the first main section 211, and the second main section 212 is located at the upper right side of the first main section 211. The second main section 212 connects the first main section 211 and the third main section 213, and the third main section 213 is located at the short side of the second main section 212 away from the first main section 211. Figure 5 As shown, the third main section 213 is located on the right side of the second main section 212. The third main section 213 connects the second branch 22, the third branch 23 and the second main section 212, and the second branch 22 and the third branch 23 are arranged on opposite sides of the third main section 213. The second branch 22 and the second main section 212 are connected to the side of the same side of the third main section 213, and the second main section 212 and the second branch 22 are arranged at intervals.

[0051] Furthermore, the first branch 21 further includes a first branch 214, a second branch 215 and a third branch 216. The first branch 214, the second branch 215 and the third branch 216 are respectively connected to the first main section 211, the first branch 214 and the third branch 216 are arranged on the side of the first main section 211 away from the second radiator 3, and the second branch 215 is arranged on the side of the first main section 211 close to the second radiator 3. Figure 5 As shown, the first branch 214 and the third branch 216 are connected to one of the short sides of the first main section 211, and the second main section 212 is connected to the other short side of the first main section 211. The first branch 214 is also connected to the floor 1, and the first branch 214 is a triangular structure, one side of the triangle is connected to the first main section 211, the other side of the triangle is connected to the floor 1, and the last side of the triangle is not connected to other structures, and is inclined relative to the floor 1 and the first main section 211. That is, the two ends of the hypotenuse of the first branch 214 are respectively connected to the first main section 211 and the floor 1. The second branch 215 is also connected to the floor 1. The second branch 215 is an approximately quadrilateral structure, and in one adjacent long side and one short side of the quadrilateral, the long side is connected to the floor 1, and the short side is connected to the first main section 211. The second branch 215, the first main section 211, the second main section 212, and the third main section 213 surround a second slot 25 with an opening, and the second slot 25 can adjust the matching of the low frequency and high frequency of the antenna structure. The third branch 216 is also a structure approximately in the shape of a quadrilateral, one of the short sides of the quadrilateral is connected to the first main section 211, and the other three sides of the quadrilateral are not connected to other structures. The third branch 216 is arranged on the side of the first branch 214 away from the floor 1, so that a third gap 26 with an opening is formed between the third branch 216, the first branch 214 and the floor 1, and the third gap 26 has a hypotenuse on the side opposite to the opening. The opening of the second gap 25 is arranged opposite to the opening of the third gap 26. When the second connecting section 12 is provided, the first branch 214, the first main section 211 and the second branch 215 are all connected to the floor 1 through the second connecting section 12.

[0052] In this embodiment, the second branch 22 includes a connecting portion 221 and an extending portion 222, and the connecting portion 221 connects the extending portion 222 and the first branch 21. The extending portion 222 of the second branch 22 is arranged close to the third branch 216, so that the second branch 22 is coupled with the first branch 21 and the low-frequency bandwidth of the antenna structure is improved. The width of the connecting portion 221 is smaller than the width of the extending portion 222. The third branch 216, the first main section 211, the second main section 212, the third main section 213 and the second branch 22 (the connecting portion 221 and the extending portion 222) form a first slot 24 with an opening. The opening of the second slot 25 is arranged opposite to the opening of the first slot 24, and the opening of the first slot 24 is arranged in the same direction as the opening of the third slot 26. Figure 5 As shown, the first gap 24 can be divided into three connected sections, the first section 241 is located between the connecting portion 221, the second main section 212 and the third main section 213, the second section 242 is located between the extending portion 222, the connecting portion 221 and the second main section 212, and the third section 243 is located between the extending portion 222, the second main section 212, the first main section 211 and the third branch 216. All three sections are approximately rectangular structures, as shown in FIG. Figure 5 As shown, the first segment 241 is located at the upper right of the second segment 242 , and the third segment 243 is located at the lower left of the second segment 242 .

[0053] In the second embodiment provided by the present utility model, Figure 3 As shown, the first radiator 2 is located in two planes and the two planes where the first radiator 2 is located are not coplanar with the floor 1. The second branch 22, the third branch 23, part of the second main section 212 and the third main section 213 are located in the same plane, and the first main section 211, part of the second main section 212, the first branch 214, the second branch 215 and the third branch 216 are located in the same plane. That is, there is a bend at the second main section 212 and the third main section 213. There is a bend between the first main section 211 and the floor 1. At this time, the second radiator 3 is coplanar with the first main section 211. The setting of this structure can reduce the volume of the first radiator 2 and thus reduce the space occupied by the antenna structure, so that the antenna structure can be set in a smaller area. Optionally, the plane where the first main section 211 is located is perpendicular to the plane where the floor 1 is located, the plane where the first main section 211 is located is perpendicular to the plane where the second branch 22 is located, and the plane where the second branch 22 is located is parallel to the plane where the floor 1 is located.

[0054] In some embodiments, the first radiator 2 is located in two planes, but the plane where the first main section 211 is located is coplanar with the plane where the floor 1 is located. In this structure, there is a bend between the second main section 212 and the third main section 213 as in the first embodiment, but there is no bend between the first main section 211 and the floor 1. In this case, the second radiator 3 can be coplanar with the first main section 211 or the floor 1, as long as the bent branch 312 and the fourth branch 32 are close to the third branch 23. Optionally, the plane where the first radiator 2 is located is perpendicular to the plane where the floor 1 is located.

[0055] In the fourth embodiment of the present invention, the first radiator 2 is located on a plane and the plane is coplanar with the floor 1. Figure 5 and Figure 6 As shown, the floor 1, the first radiator 2 and the second radiator 3 are located in the same plane. At this time, the second radiator 3 is coplanar with the first main section 211. The manufacturing process of the antenna structure of this structure is relatively simple.

[0056] In some embodiments, the first radiator 2 is located in a plane, and the plane where the first radiator 2 is located intersects with the plane where the floor 1 is located. The first main segment 211 intersects with the floor 1, the first main segment 211 intersects with the plane where the second branch 22 is located, and the first main segment 211 intersects with the plane where the third branch 23 is located. That is, the structure of the first radiator 2 is the same as the structure of the first radiator 2 in the fourth embodiment, but the plane where the first radiator 2 is located intersects with the plane where the floor 1 is located. Optionally, the plane where the first radiator 2 is located is perpendicular to the plane where the floor 1 is located.

[0057] In the above embodiment, the second branch 22 and the third branch 23 are located in the first plane, and the first plane is parallel to or intersects with the plane where the floor 1 is located. The third branch 23 includes two adjacently arranged coupling edges, and the second radiator 3 is arranged close to at least one of the coupling edges, thereby ensuring that the second radiator 3 can improve the resonant bandwidth of the antenna structure.

[0058] The antenna structure is fed via a feeder line 4. The feeder line 4 includes a first feeder section 41 and a second feeder section 42 connected to each other. Figure 7 and Figure 8As shown, the first feeding section 41 is arranged along the side of the floor 1 connected to the first radiator 2, the second feeding section 42 is arranged close to the interval between the first radiator 2 and the second radiator 3, and there is a bend between the first feeding section 41 and the second feeding section 42. In this embodiment, the feeder 4 is an RF Cable (Radio Frequency Cable). The current distribution at the second feeding section 42 is the most intensive, the current flows to the first radiator 2, and is coupled to the second radiator 3 on the side at the same time. The current is transmitted upward along the grounding branch 311 and away from the restraint of the floor 1. The current is converted into electromagnetic wave radiation, thereby increasing the radiation efficiency of the overall antenna structure module.

[0059] Fig. 9 It is a comparison diagram of the S parameters of the antenna structure provided in the first embodiment of the utility model and the antenna structure of the comparative example. In the figure, b is the parameter of the antenna structure provided in the first embodiment of the utility model with the second radiator 3, and in the figure, a is the parameter curve of the antenna structure of the comparative example. Fig.10 1 is a comparison chart of the darkroom test data of the antenna structure provided in the first embodiment of the present invention and the antenna structure of the comparative example. Figure c is a test curve of the antenna structure provided in the first embodiment of the present invention with the second radiator 3, and figure d is a test curve of the antenna structure of the comparative example. The antenna structure of the comparative example is a traditional PIFA (Planar Inverted F-shaped Antenna) and does not have the second radiator 3. Fig. 9 As shown, the bandwidth of the antenna structure provided in the first embodiment is significantly larger than that of the antenna structure in the comparative example. Fig.10 As shown, the radiation efficiency of the antenna structure provided in the first embodiment is greater than -3.5dB, and the efficiency is 45%, which meets the performance requirements of the antenna structure (greater than -3.5dB).

[0060] The utility model embodiment discloses an antenna structure, which is not limited to use in wifi, but can also be used in bluetooth and other frequency bands. The antenna structure includes a floor, a first radiator and a second radiator. The first radiator and the second radiator are connected to the floor respectively, the first radiator includes a first branch, a second branch and a third branch, and the second radiator is arranged on the side of the first radiator having the third branch. The second radiator includes a bending structure and a fourth branch, the first end of the bending structure has a grounding branch and is connected to the floor, the second end of the bending structure has a bending branch and is connected to the fourth branch, the bending branch and the grounding branch are arranged obliquely, and the bending branch and the fourth branch are also arranged obliquely. The width of the fourth branch gradually decreases from the end connected to the bending structure to the end away from the bending structure. Through the above arrangement, the utility model embodiment enables the bending branch and the fourth branch of the second radiator to form a coupling with the third branch of the first radiator, thereby increasing the resonant bandwidth of the antenna structure and increasing the radiation efficiency. In addition, the size and setting distance of the second radiator can be relatively adjusted according to different communication protocols, so as to be suitable for different signal reception and transmission.

[0061] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An antenna structure, characterized in that: The antenna structure comprises: Floor (1); a first radiator (2) connected to the floor (1), the first radiator (2) comprising a first branch (21), a second branch (22) and a third branch (23), one end of the first branch (21) being connected to the floor (1), the other end of the first branch (21) extending in a direction away from the floor (1), the second branch (22) and the third branch (23) being both connected to the other end of the first branch (21), the second branch (22) and the third branch (23) being arranged on opposite sides of the first branch (21); and A second radiator (3, 3a, 3b, 3c) is connected to the floor (1); the second radiator (3, 3a, 3b, 3c) is arranged obliquely with respect to the floor (1); the second radiator (3, 3a, 3b, 3c) is arranged on the side of the first radiator (2) having the third branch (23); the second radiator (3, 3a, 3b, 3c) comprises a bending structure (31) connected to the floor (1) and a fourth branch (32) connected to the bending structure (31); the width of the fourth branch (32) at one end away from the bending structure (31) gradually decreases; the bending structure (31) and the fourth branch (32) are arranged obliquely with respect to each other.

2. The antenna structure according to claim 1, characterized in that: The bending structure (31) comprises a grounding branch (311) and at least one bending branch (312, 312a, 312b, 312c); the first end of the bending structure (31) has the grounding branch (311) and is connected to the floor (1); the second end of the bending structure (31) extends in a direction away from the grounding branch (311) and is connected to the fourth branch (32); the bending branch (312, 312a, 312b, 312c) is arranged between the grounding branch (311) and the fourth branch (32); one of the bending branches (312, 312a, 312b, 312c) is connected to the grounding branch (311) and is arranged obliquely with respect to the grounding branch (311); and the end of the fourth branch (32) away from the bending structure (31) is an open end.

3. The antenna structure according to claim 2, characterized in that: The bending structure (31) comprises a bending branch (312, 312a, 312b, 312c), one end of the grounding branch (311) is connected to the floor (1), the other end of the grounding branch (311) extends in a direction away from the floor (1), one end of the bending branch (312, 312a, 312b, 312c) is connected to the other end of the grounding branch (311), and the bending branch (312, 312a, 312b, 312c) is connected to the other end of the grounding branch (311). 12a, 312b, 312c) extends in a direction close to the floor (1), one end of the fourth branch (32) is connected to the other end of the bent branch (312, 312a, 312b, 312c), the other end of the fourth branch (32) extends in a direction away from the floor (1), and the bent branch (312, 312a, 312b, 312c) is inclined relative to the fourth branch (32).

4. The antenna structure according to claim 2, characterized in that: The bending structure (31) comprises at least two bending branches (312, 312a, 312b, 312c), the at least two bending branches (312, 312a, 312b, 312c) are connected in sequence, two adjacent bending branches (312, 312a, 312b, 312c) are arranged obliquely, the bending branches (312, 312a, 312b, 312c) and the fourth branch (32) are arranged obliquely, one end of the grounding branch (311) is connected to the floor (1), and the other end of the grounding branch (311) extends in a direction away from the floor (1).

5. The antenna structure according to claim 1, characterized in that: The antenna structure comprises a plurality of second radiators (3, 3a, 3b, 3c), wherein the plurality of second radiators (3, 3a, 3b, 3c) are arranged at intervals and are respectively connected to the floor (1).

6. The antenna structure according to claim 1, characterized in that: The floor (1), the first radiator (2) and the second radiator (3, 3a, 3b, 3c) are located on the same plane.

7. The antenna structure according to claim 1, characterized in that: The second branch (22) and the third branch (23) are located in a first plane, the first plane is parallel to or intersects with the plane where the floor (1) is located, the third branch (23) includes two adjacently arranged coupling edges, and the second radiator (3, 3a, 3b, 3c) is arranged close to at least one of the coupling edges.

8. The antenna structure according to claim 1, characterized in that: The first branch node (21) comprises a first main section (211), a second main section (212) and a third main section (213); the first main section (211) connects the second main section (212) and the floor (1); the second main section (212) connects the first main section (211) and the third main section (213); the third main section (213) connects the second branch node (22), the third branch node (23) and the second main section (212); the second branch node (22) and the third branch node (23) are arranged on opposite sides of the third main section (213).

9. The antenna structure according to claim 8, characterized in that: The first main section (211) is coplanar with the floor (1); or The first main segment (211), the second branch segment (22) and the third branch segment (23) are coplanar; or The first main section (211) intersects with the floor (1), the first main section (211) intersects with the plane where the second branch node (22) is located, and the first main section (211) intersects with the plane where the third branch node (23) is located.

10. The antenna structure according to claim 9, characterized in that: The first branch (21) further comprises a first branch (214), a second branch (215) and a third branch (216); the first branch (214) has a hypotenuse; the first branch (214) connects the first main section (211) and the floor (1); the third branch (216) is connected to the first main section (211); the first branch (214) and the third branch (216) are arranged on a side of the first main section (211) away from the second radiator (3, 3a, 3b, 3c); the second branch (215) connects the first main section (211) and the floor (1); the second branch (215) is arranged on a side of the first main section (211) close to the second radiator (3, 3a, 3b, 3c).

11. The antenna structure according to claim 10, characterized in that: The third branch (216), the first main section (211), the second main section (212), the third main section (213) and the second branch (22) form a first slit (24) having an opening; the second branch (215), the first main section (211), the second main section (212) and the third main section (213) form a second slit (25) having an opening; the opening of the second slit (25) is arranged opposite to the opening of the first slit (24).

12. The antenna structure according to claim 1, characterized in that: The second branch node (22) comprises a connecting portion (221) and an extending portion (222), wherein the connecting portion (221) connects the extending portion (222) and the first branch node (21), and a width of the connecting portion (221) is smaller than a width of the extending portion (222).

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