Antenna structure and wireless communication device

Abstract

The invention provides an antenna structure and a wireless communication device, the antenna structure comprises a dielectric substrate, a feed unit, a radiation unit and a grounding unit, the radiation unit is arranged on a first surface of the dielectric substrate, a main radiation branch knot and a plurality of branch radiation branch knots are formed on the radiation unit, the main radiation branch knot is connected with the feed unit, and the grounding unit is connected with the feed unit. The plurality of branch radiation branches are arranged between the main radiation branch and the feed unit at intervals, each branch radiation branch forms a closed annular structure, and an electric signal fed in from the feed unit passes through the main radiation branch and the plurality of branch radiation branches to generate a plurality of current paths. The plurality of branch radiation branches can also generate a plurality of current paths with closed current loops, and the plurality of current paths with closed loops and the grounding unit resonate to form radiation signals with different wavelengths, so that the bandwidth of the antenna structure can be effectively expanded, and a good omnidirectional radiation characteristic is provided.

Description

Technical Field

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

[0002] WiFi6, the sixth-generation wireless networking technology, stands for the 802.11ax standard. It allows communication with up to eight devices at speeds of 9.6 Gbps and is widely used in home wireless routers. WiFi6E is an enhanced version of the sixth-generation wireless networking technology, building upon the 2.4 / 5 GHz supported by WiFi6. WiFi6E adds a 6 GHz operating frequency band. To enable various routers and antenna products to utilize WiFi6E communication technology, it is necessary to design an antenna that is compatible with WiFi6E and exhibits excellent omnidirectional radiation characteristics. Summary of the Invention

[0003] In view of the above problems, it is necessary to provide an antenna structure and a wireless communication device.

[0004] In a first aspect, the present application provides an antenna structure, which includes: a dielectric substrate, the dielectric substrate including a first surface and a second surface arranged opposite to each other; a feeding unit, the feeding unit being arranged on the first surface, the feeding unit being used to feed an electrical signal into the antenna structure; a radiating unit, the radiating unit being arranged on the first surface, the radiating unit being formed with a main radiating branch and a plurality of branch radiating branches, the main radiating branch being connected to the feeding unit; a plurality of branch radiating branches being arranged at intervals between the main radiating branch and the feeding unit, and each of the branch radiating branches forming a closed ring structure; and a grounding unit, the grounding unit being arranged on a side of the second surface close to the feeding unit, the grounding unit being used to provide grounding for the antenna structure.

[0005] In one embodiment of the first aspect, the branch radiation branch includes: a first sub-branch, one end of the first sub-branch is connected to the feeding unit, the first sub-branch is bent in a direction away from the feeding unit, and the other end of the first sub-branch is connected to the main radiation branch; a second sub-branch, one end of the second sub-branch is connected to the feeding unit, the second sub-branch is bent in a direction away from the feeding unit and the first sub-branch, and the other end of the second sub-branch is connected to the main radiation branch; wherein the first sub-branches and the second sub-branches of several of the branch radiation branches are respectively arranged at intervals along the length direction of the feeding unit.

[0006] In one embodiment of the first aspect, the feeding unit and the trunk radiating branches are arranged collinearly.

[0007] In one embodiment of the first aspect, the first sub-branch and the second sub-branch are symmetrically arranged along a center line of the feeding unit.

[0008] In one embodiment of the first aspect, the first sub-branches of a plurality of the branch radiating branches are arranged in parallel and spaced apart, and the second sub-branches of a plurality of the branch radiating branches are arranged in parallel and spaced apart.

[0009] In one embodiment of the first aspect, an angle between the first sub-branch and the feeding unit is an acute angle, and an angle between the second sub-branch and the feeding unit is an acute angle.

[0010] In one embodiment of the first aspect, an angle between the first sub-branch and the feeding unit is 45°, and an angle between the second sub-branch and the feeding unit is 45°.

[0011] In one embodiment of the first aspect, the bending angle of the first sub-branch and the second sub-branch is 90°.

[0012] In one embodiment of the first aspect, the radiation unit further includes a parasitic radiation branch connected to an end of the main radiation branch away from the feeding unit.

[0013] A second aspect of the present application provides a wireless communication device, which includes the antenna structure as described above.

[0014] The antenna structure provided by the present application comprises a feeding unit arranged on the first surface of a dielectric substrate and used to feed an electrical signal into the antenna structure; a radiating unit arranged on the first surface of the dielectric substrate, the radiating unit forming a main radiating branch and a plurality of branch radiating branches, the main radiating branch being connected to the feeding unit, the plurality of branch radiating branches being spaced apart on the main radiating branch and between the feeding unit, and each branch radiating branch forming a closed ring structure; a grounding unit being arranged on a side of the second surface of the dielectric substrate close to the feeding unit, the grounding unit being used to provide grounding for the antenna structure. Since the radiating unit is formed with a main radiating branch and a plurality of branch radiating branches, the plurality of branch radiating branches being spaced apart between the main radiating branch and the feeding unit, and the branch radiating branches forming a closed ring structure, the electrical signal fed from the feeding unit generates multiple current paths through the main radiating branch and the plurality of branch radiating branches, and the plurality of branch radiating branches can also generate a plurality of current paths with closed current loops, the plurality of current paths with closed loops and the grounding unit resonate to produce radiation signals of different wavelengths, thereby effectively expanding the bandwidth of the antenna structure and providing good omnidirectional radiation characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic structural diagram of the radiation unit and feeding unit of the antenna structure of an embodiment of the present application.

[0016] Figure 2 Schematic diagram of the structure of the grounding unit of the antenna structure according to an embodiment of the present application.

[0017] Figure 3 This is a schematic diagram of the size numbers of the dielectric substrate, radiation unit and feeding unit of the antenna structure of an embodiment of the present application.

[0018] Figure 4 This is a schematic diagram of the size numbers of the ground unit of the antenna structure according to an embodiment of the present application.

[0019] Figure 5 This is a return loss curve diagram of the antenna structure according to an embodiment of the present application.

[0020] Figure 6 This is the 3D directional field diagram of the antenna structure according to an embodiment of the present application.

[0021] Description of main component symbols

[0022] Antenna structure 100

[0023] Dielectric substrate 10

[0024] First surface 11

[0025] Second surface 12

[0026] Feed unit 20

[0027] Radiation unit 30

[0028] Main trunk radiating branches 31

[0029] Branch radiating branches 32 / 32A, 32B, 32C, 32D

[0030] First branch 320

[0031] First radiant section 3201

[0032] The second radiation section 3202

[0033] Second Branch 321

[0034] The third radiation section 3211

[0035] Fourth radiant section 3212

[0036] First slot a

[0037] Second slot b

[0038] The third slot c

[0039] Fourth slot d

[0040] Fifth slot e

[0041] Sixth slot f

[0042] Seventh slot g

[0043] Eighth slot h

[0044] Parasitic Radiation Branch 33

[0045] Grounding unit 40

[0046] The following specific implementation methods will further illustrate this application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0050] See also Figure 1 and Figure 2 The present invention provides an antenna structure 100 that can be installed in a wireless communication device to transmit and receive radio electromagnetic waves to transmit and exchange wireless signals, thereby enabling communication between the wireless communication device and other electronic devices. It is understood that wireless communication devices include, but are not limited to, mobile phones, tablet computers, laptop computers, routers, Wi-Fi devices, and other electronic devices.

[0051] Please continue reading Figure 1 and Figure 2 The antenna structure 100 includes a dielectric substrate 10 , a feeding unit 20 , a radiation unit 30 and a grounding unit 40 , wherein the feeding unit 20 , the radiation unit 30 and the grounding unit 40 are all disposed on the dielectric substrate 10 .

[0052] The dielectric substrate 10 includes a first surface 11 and a second surface 12 that are opposite to each other.

[0053] The feeding unit 20 is disposed on the first surface 11 of the dielectric substrate 10 , and is used to feed electrical signals into the antenna structure 100 .

[0054] The radiating unit 30 is also disposed on the first surface 11 of the dielectric substrate 10. The radiating unit 30 includes a main radiating branch 31 and a plurality of branch radiating branches 32. The main radiating branch 31 is connected to the feed unit 20, and the plurality of branch radiating branches 32 are spaced apart between the main radiating branch 31 and the feed unit 20, with each branch radiating branch 32 forming a closed ring structure.

[0055] The grounding unit 40 is disposed on a side of the second surface 12 of the dielectric substrate 10 close to the feeding unit 20 . The grounding unit 40 is used to provide grounding for the antenna structure 100 .

[0056] In the antenna structure 100 of the embodiment of the present application, when an electrical signal is fed from the feeding unit 20, since the radiating unit 30 is formed with a main radiating branch 31 and a plurality of branch radiating branches 32, the plurality of branch radiating branches 32 are spaced apart between the main radiating branch 31 and the feeding unit 20, and the branch radiating branches 32 form a closed ring structure, so that the electrical signal fed by the feeding unit 20 generates multiple different current paths through the main radiating branch 31 and the plurality of branch radiating branches 32, and the plurality of branch radiating branches 32 can also generate multiple current paths with closed loops. The multiple current paths with closed loops and the grounding unit 40 resonate to produce radiation signals of different wavelengths, thereby expanding the bandwidth of the antenna structure 100 and providing good omnidirectional radiation characteristics.

[0057] like Figure 1 As shown, in some embodiments, the feeding unit 20 may be a microstrip feeder, which has the advantages of small size, light weight, easy manufacture and integration, etc.

[0058] In some specific examples, the feeding unit 20 may be connected to a feeding source (not shown) via an SMA connector (not shown) to receive an electrical signal provided by the feeding source.

[0059] Please continue reading Figure 1In some embodiments, the branch radiation branch 32 may include a first sub-branch 320 and a second sub-branch 321. One end of the first sub-branch 320 is connected to the feed unit 20, the first sub-branch 320 is bent in a direction away from the feed unit 20, and the other end of the first sub-branch 320 is connected to the main radiation branch 31. One end of the second sub-branch 321 is connected to the feed unit 20, the second sub-branch 321 is bent in a direction away from the feed unit 20 and the first sub-branch 320, and the other end of the second sub-branch 321 is connected to the main radiation branch 31. The first sub-branch 320 and the second sub-branch 321 of the plurality of branch radiation branches are respectively arranged at intervals along the length direction of the feed unit 20.

[0060] It can be understood that since the branch radiation branch forms a closed ring structure, the connection between the first sub-branch 320 and the feeding unit 20 and the connection between the second sub-branch 321 and the feeding unit 20 are the same, and the connection between the first sub-branch 320 and the main radiation branch 31 and the second sub-branch 321 and the main radiation branch 31 are the same.

[0061] Among them, the connection point between the first sub-branch 320 and the feeding unit 20 and the connection point between the second sub-branch 321 and the feeding unit 20 are the same, which can mean that: the connection line between the connection point between the first sub-branch 320 and the feeding unit 20 and the connection point between the second sub-branch 321 and the feeding unit 20 is perpendicular to the feeding unit 20.

[0062] In some embodiments, the feeding unit 20 and the main radiating branch 31 can be arranged in a collinear manner, so that the connection between the first sub-branch 320 and the feeding unit 20 and the connection between the first sub-branch 320 and the main radiating branch 31 are also collinear, and the connection between the second sub-branch 321 and the feeding unit 20 and the connection between the second sub-branch 321 and the main radiating branch 31 are also collinear.

[0063] Furthermore, the first sub-branch 320 and the second sub-branch 321 are symmetrically arranged along the center line of the feeding unit 20 .

[0064] In some embodiments, the first sub-branches 320 of the plurality of branching radiating branches 32 may be arranged in parallel and spaced apart, and the second sub-branches 321 of the plurality of branching radiating branches 32 may also be arranged in parallel and spaced apart.

[0065] The plurality of branch radiation branches 32 may be arranged in parallel and spaced apart along the length direction of the feeding unit 20 .

[0066] It can be understood that the closed annular structure formed by the plurality of branch radiation branches 32 can be arranged at equal intervals.

[0067] like Figure 1As shown, in some embodiments, the lengths between the first sub-branches 320 of the plurality of branch radiating branches 32 gradually shorten along the length direction of the feed unit 20, and the lengths between the second sub-branches 321 of the plurality of branch radiating branches 32 also gradually shorten along the length direction of the feed unit 20. Thus, the ring structure formed by the plurality of branch radiating branches 32 is sequentially arranged in a surrounding manner from the outside to the inside.

[0068] In some embodiments, the angle between the first sub-branch 320 and the feeding unit 20 is an acute angle, and the angle between the second sub-branch 321 and the feeding unit 20 is also an acute angle.

[0069] Furthermore, the angle between the first sub-branch 320 and the feeding unit 20 may be 45°, and the angle between the second sub-branch 321 and the feeding unit 20 may also be 45°. Thus, the angle between the first sub-branch 320 and the second sub-branch 321 may be 90°.

[0070] In some embodiments, the bending angle between the first sub-branch 320 and the second sub-branch 321 is 90°. When the angle between the first sub-branch 320 and the second sub-branch 321 is also 90°, the annular structure formed by the branching radiating branches 32 is rectangular.

[0071] Specifically, the first sub-branch 320 of each branching radiating branch 32 can be bent to form a first radiating segment 3201 and a second radiating segment 3202, and the second sub-branch 321 of each branching radiating branch 32 can be bent to form a third radiating segment 3211 and a fourth radiating segment 3212. Alternatively, the first sub-branch 320 can be formed by connecting the first radiating segment 3201 and the second radiating segment 3202, and the second sub-branch 321 can be formed by connecting the third radiating segment 3211 and the fourth radiating segment 3212.

[0072] The first end of the first radiating section 3201 is connected to the feeding unit 20, the second end of the first radiating section 3201 extends in a direction away from the feeding unit 20 and is connected to the first end of the second radiating section 3202, and the second end of the second radiating section 3202 extends in a direction close to the main radiating branch node 31 and is connected to the main radiating branch node 31.

[0073] The first end of the third radiating segment 3211 is connected to the feeding unit 20, the second end of the third radiating segment 3211 extends in a direction away from the feeding unit 20 and is connected to the first end of the fourth radiating segment 3212, and the second end of the fourth radiating segment 3212 extends in a direction close to the main radiating branch node 31 and is connected to the main radiating branch node 31.

[0074] The angles between the first radiating segment 3201, the third radiating segment 3211, and the feed unit 20 can all be acute angles, such as 45°. The angles between the second radiating segment 3202, the fourth radiating segment 3212, and the main radiating branch 31 can also all be acute angles, such as 45°. The angle between the first radiating segment 3201 and the second radiating segment 3202 can be 90°, and the angle between the third radiating segment 3211 and the fourth radiating segment 3212 can also be 90°. The line connecting the first end of the first radiating segment 3201 and the first end of the third radiating segment 3211 is perpendicular to the feed unit 20.

[0075] It can be understood that the first radiation section 3201 , the second radiation section 3202 , the third radiation section 3211 and the fourth radiation section 3212 can be straight strip-shaped conductor sheets.

[0076] Similarly, the trunk radiating branch 31 and the feeding unit 20 may both be straight strip-shaped conductors. The width of the trunk radiating branch 31 may be smaller than the width of the feeding unit 20. Of course, in some embodiments, the width of the trunk radiating branch 31 may also be greater than or equal to the width of the feeding unit 20.

[0077] It can be understood that the first radiating segments 3201 of the first sub-branches 320 of the plurality of branch radiating segments 32 are arranged in parallel and spaced apart, and the second radiating segments 3202 of the first sub-branches 320 of the plurality of branch radiating segments 32 are arranged in parallel and spaced apart. The first radiating segment 3201 and the third radiating segment 3211 of each branch radiating segment 32 are symmetrically arranged along the feed unit 20, and the second radiating segment 3202 and the fourth radiating segment 3212 of each branch radiating segment 32 are symmetrically arranged along the feed unit 20. Thus, the annular structure formed by the branch radiating segments 32 forms a parallelogram.

[0078] When the angle between the first radiation segment 3201 and the feeding unit 20, the angle between the second radiation segment 3202 and the main radiation branch 31, the angle between the third radiation segment 3211 and the feeding unit 20, and the angle between the fourth radiation segment 3212 and the main radiation branch 31 are all 45°, and the angle between the first radiation segment 3201 and the second radiation segment 3202 and the angle between the third radiation segment 3211 and the fourth radiation segment 3212 are all 90°, the ring structure formed by the branch radiation branch 32 is rectangular.

[0079] Furthermore, when the lengths of the first radiation segment 3201 , the second radiation segment 3202 , the third radiation segment 3211 , and the fourth radiation segment 3212 are the same, the annular structure formed by the branch radiation nodes 32 is a square.

[0080] For more details, please refer again to Figure 1The radiation unit 30 includes four branch radiation branches 32, namely a branch radiation branch 32A, a branch radiation branch 32B, a branch radiation branch 32C and a branch radiation branch 32D.

[0081] The first radiation section 3201 and the third radiation section 3211 of the branch radiation branch 32A are connected to the side of the feed unit 20 away from the main radiation branch 31. The second radiation section 3202 and the fourth radiation section 3212 of the branch radiation branch 32A are connected to the side of the main radiation branch 31 away from the feed unit 20.

[0082] The first radiation segment 3201 and the third radiation segment 3211 of the branch radiation branch 32B are connected to the feed unit 20 and are closer to the main radiation branch 31 than the first radiation segment 3201 and the third radiation segment 3211 of the branch radiation branch 32A. The second radiation segment 3202 and the fourth radiation segment 3212 of the branch radiation branch 32B are connected to the main radiation branch 31 and are closer to the feed unit 20 than the second radiation segment 3202 and the fourth radiation segment 3212 of the branch radiation branch 32A.

[0083] The first radiation segment 3201 and the third radiation segment 3211 of the branch radiation branch 32C are connected to the feed unit 20 and are closer to the main radiation branch 31 than the first radiation segment 3201 and the third radiation segment 3211 of the branch radiation branch 32B. The second radiation segment 3202 and the fourth radiation segment 3212 of the branch radiation branch 32C are connected to the main radiation branch 31 and are closer to the feed unit 20 than the second radiation segment 3202 and the fourth radiation segment 3212 of the branch radiation branch 32B.

[0084] The first radiation segment 3201 and the third radiation segment 3211 of the branch radiation branch 32D are connected to the feed unit 20 and are closer to the main radiation branch 31 than the first radiation segment 3201 and the third radiation segment 3211 of the branch radiation branch 32C. The second radiation segment 3202 and the fourth radiation segment 3212 of the branch radiation branch 32D are connected to the main radiation branch 31 and are closer to the feed unit 20 than the second radiation segment 3202 and the fourth radiation segment 3212 of the branch radiation branch 32C.

[0085] The circumference of the annular structure formed by the branch radiating branch 32A is greater than the circumference of the annular structure formed by the branch radiating branch 32B, the circumference of the annular structure formed by the branch radiating branch 32B is greater than the circumference of the annular structure formed by the branch radiating branch 32C, and the circumference of the annular structure formed by the branch radiating branch 32C is greater than the circumference of the annular structure formed by the branch radiating branch 32D.

[0086] A first slot a is formed between the first sub-branch 320 of the branch radiating branch 32A and the first sub-branch 320 of the branch radiating branch 32B. A second slot b is formed between the second sub-branch 321 of the branch radiating branch 32A and the second sub-branch 321 of the branch radiating branch 32B. The second slot b is symmetrical to the first slot a along the main radiating branch 31.

[0087] A third slot c is formed between the first sub-branch 320 of the branch radiating branch 32B and the first sub-branch 320 of the branch radiating branch 32C. A fourth slot d is formed between the second sub-branch 321 of the branch radiating branch 32B and the second sub-branch 321 of the branch radiating branch 32C. The fourth slot d and the third slot c are symmetrical along the main radial branch 31.

[0088] A fifth slot e is formed between the first sub-branch 320 of the branch radiating branch 32C and the first sub-branch 320 of the branch radiating branch 32D. A sixth slot f is formed between the second sub-branch 321 of the branch radiating branch 32C and the second sub-branch 321 of the branch radiating branch 32D. The sixth slot f and the fifth slot e are symmetrical along the main radial branch 31.

[0089] A seventh slot g is formed between the first sub-branch 320 of the branch radiating branch 32D and the main radial branch 31. An eighth slot h is formed between the second sub-branch 321 of the branch radiating branch 32D and the main radial branch 31. The eighth slot h and the seventh slot g are symmetrical along the main radial branch 31.

[0090] Among them, the first slot a, the second slot b, the third slot c, the fourth slot d, the fifth slot e and the sixth slot f are all L-shaped, and the seventh slot g and the eighth slot h are both triangular.

[0091] It is understood that in the embodiment of the present application, the radiating unit 30 may be a sheet-shaped conductor, and the aforementioned slots may be provided on the radiating unit 30 to form a main radiating branch 31 and a plurality of branch radiating branches 32. Alternatively, the main radiating branch 31 and the plurality of branch radiating branches 32 may both be straight strip-shaped conductor sheets, and the radiating unit 30 may be formed by connecting the straight strip-shaped main radiating branch 31 and the plurality of branch radiating branches 32, with the aforementioned slots formed after the main radiating branch 31 and the plurality of branch radiating branches 32 are connected.

[0092] In some embodiments, the lengths of the first radiating segment 3201, the second radiating segment 3202, the third radiating segment 3211, and the fourth radiating segment 3212 of the same branch radiating segment 32 are all the same. The widths of the first radiating segment 3201, the second radiating segment 3202, the third radiating segment 3211, and the fourth radiating segment 3212 of the same branch radiating segment 32 can be the same or different.

[0093] Please refer again Figure 1 The radiation unit 30 further includes a parasitic radiation branch 33 , which is connected to an end of the main radiation branch 31 away from the feeding unit 20 .

[0094] Furthermore, one end of the main radiation branch 31 is vertically connected to the middle of the parasitic radiation branch 33, and the other end of the main radiation branch 31 is connected to the feeding unit 20. The parasitic radiation branch 33 is in a straight strip shape.

[0095] Specifically, the first sub-branch 320 of the branch radiation branch 32A can be connected to the position where the main radiation branch 31 is connected to the parasitic radiation branch 33. As a result, the current of each branch radiation branch 32 (32A, 32B, 32C, 32D) will pass through the middle of the parasitic radiation branch 33, which can enhance the signal radiation capability of the parasitic radiation branch 33.

[0096] In some embodiments, the dielectric substrate 10 is rectangular, and the centerline of the dielectric substrate 10 coincides with the centerline of the main radiating branches 31. The feeding unit 20 is straight, and the centerline of the feeding unit 20 also coincides with the centerline of the dielectric substrate 10.

[0097] See also Figure 2 In some embodiments, the grounding unit 40 is rectangular, and the center line of the grounding unit 40 also coincides with the center line of the dielectric substrate 10 . The projection of the feeding unit 20 on the second surface 12 of the dielectric substrate 10 may overlap with a portion of the grounding unit 40 .

[0098] Specifically, the length of the grounding unit 40 may be close to or slightly greater than half the length of the dielectric substrate 10 .

[0099] In some specific examples, the overall size of the antenna structure 100 is as follows: Figure 3 、 Figure 4 and Table 1 below:

[0100] <![CDATA[L s ]]> <![CDATA[W s ]]> <![CDATA[L f ]]> <![CDATA[W f ]]> <![CDATA[R1]]> 50 57 26 6 33 <![CDATA[R2]]> <![CDATA[R3]]> <![CDATA[R4]]> <![CDATA[R5]]> <![CDATA[R6]]> 29 25 21 17 13 <![CDATA[R7]]> <![CDATA[R8]]> <![CDATA[R9]]> Lg <![CDATA[W g ]]> 9 5 15 28 28

[0101] The unit of each dimension is mm. Figure 3 、 Figure 4 As can be seen from Table 1, in the antenna structure 100, the length L of the dielectric substrate 10 is s The width W of the dielectric substrate 10 is 50 mm. s The length L of the feed unit 20 is 57 mm. f The width W of the feed unit 20 is 26 mm. f 6mm.

[0102] The length R1 of the outer side (the side away from the branch radiation branch 32B) of the fourth radiation segment 3212 of the branch radiation branch 32A is 33 mm, and the length R2 of the inner side (the side close to the branch radiation branch 32B) of the fourth radiation segment 3212 of the branch radiation branch 32A is 29 mm.

[0103] The length R3 of the outer side (the side away from the branch radiation branch 32C) of the fourth radiation segment 3212 of the branch radiation branch 32B is 25 mm, and the length R4 of the inner side (the side close to the branch radiation branch 32C) of the fourth radiation segment 3212 of the branch radiation branch 32B is 21 mm.

[0104] The length R5 of the outer side (the side away from the branch radiation branch 32D) of the fourth radiation segment 3212 of the branch radiation branch 32C is 17 mm, and the length R6 of the inner side (the side close to the branch radiation branch 32D) of the fourth radiation segment 3212 of the branch radiation branch 32C is 13 mm.

[0105] The length R7 of the outer side (the side away from the main radiation branch 31) of the fourth radiation segment 3212 of the branch radiation branch 32D is 9 mm, and the length R8 of the inner side (the side close to the main radiation branch 31) of the fourth radiation segment 3212 of the branch radiation branch 32D is 5 mm.

[0106] Among them, the lengths of the first radiation segment 3201, the second radiation segment 3202, the third radiation segment 3211 and the fourth radiation segment 3212 in the same branch radiation branch 32 are the same, and the lengths of the first radiation segment 3201, the second radiation segment 3202 and the third radiation segment 3211 are not further described here.

[0107] The length R9 of the parasitic radiation branch 33 is 15 mm. The length L of the ground unit 40 is g The width W of the ground unit 40 is 28 mm. g They are 28mm respectively.

[0108] See also Figure 5 , Figure 5 The return loss curves of the antenna structure 100 in this example obtained by simulation in simulation software and actual testing are shown, wherein curve M is the return loss curve obtained by simulation in simulation software, and curve L is the return loss curve obtained by testing the antenna structure 100. Figure 5 As shown, the frequency range of the antenna structure 100 in which the return loss is less than -10dB is 5.925GHz to 7.12GHz. It can be seen that the application frequency band of the antenna structure 100 is 6GHz, which meets the application frequency band of WIFI6E communication technology.

[0109] See also Figure 6 , Figure 6The 3D directional field diagram of the antenna structure 100 of this example is shown. Figure 6 It can be seen that the antenna structure 100 of this example has good radiation characteristics in multiple directions, that is, the antenna structure 100 of this example can provide good omnidirectional radiation characteristics and meet the design requirements of the antenna structure 100.

[0110] From the above, the antenna structure 100 of the embodiment of the present application has a compact structure, a small volume, and has the characteristics of wide bandwidth and good omnidirectional radiation characteristics, and can also be applied to WIFI6E communication technology.

[0111] An embodiment of the present application also provides a wireless communication device (not shown), which includes the aforementioned antenna structure 100, so that the wireless communication device has a wide bandwidth and good omnidirectional radiation characteristics, and can also be applied to WIFI6E communication technology.

[0112] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions of the technical solutions of the present application may be made without departing from the spirit and scope of the technical solutions of the present application. Those skilled in the art may also make other changes within the spirit of the present application and apply them to the design of the present application, as long as they do not deviate from the technical effects of the present application. These changes made in accordance with the spirit of the present application should be included in the scope of protection claimed in the present application.

Claims

1. An antenna structure, characterized in that: The antenna structure comprises: a dielectric substrate, the dielectric substrate comprising a first surface and a second surface disposed opposite to each other; a feeding unit, the feeding unit being arranged on the first surface and being used to feed an electrical signal into the antenna structure; a radiation unit, the radiation unit being arranged on the first surface, the radiation unit being formed with a main radiation branch and a plurality of branch radiation branches, the main radiation branch being connected to the feeding unit; the plurality of branch radiation branches being arranged at intervals between the main radiation branch and the feeding unit, and each branch radiation branch forming a closed ring structure; and A grounding unit is provided on a side of the second surface close to the feeding unit, and is used to provide grounding for the antenna structure.

2. The antenna structure according to claim 1, wherein: The branch radiation nodes include: a first sub-branch, one end of which is connected to the feeding unit, the first sub-branch is bent in a direction away from the feeding unit, and the other end of which is connected to the main radiating branch; a second sub-branch, one end of which is connected to the feeding unit, the second sub-branch is bent in a direction away from the feeding unit and the first sub-branch, and the other end of which is connected to the main radiating branch; The first sub-branches and the second sub-branches of the plurality of branch radiation branches are respectively arranged at intervals along the length direction of the feeding unit.

3. The antenna structure according to claim 2, wherein: The feeding unit and the trunk radiating branches are arranged in a collinear manner.

4. The antenna structure according to claim 3, wherein: The first sub-branch and the second sub-branch are symmetrically arranged along a center line of the feeding unit.

5. The antenna structure according to claim 4, wherein: The first sub-branches of a plurality of the branch radiation branches are arranged in parallel and spaced apart, and the second sub-branches of a plurality of the branch radiation branches are arranged in parallel and spaced apart.

6. The antenna structure according to any one of claims 2 to 5, characterized in that: An angle between the first sub-branch and the feeding unit is an acute angle, and an angle between the second sub-branch and the feeding unit is an acute angle.

7. The antenna structure according to claim 6, wherein: An included angle between the first sub-branch and the feeding unit is 45°, and an included angle between the second sub-branch and the feeding unit is 45°.

8. The antenna structure according to claim 7, wherein: The bending angles of the first sub-branch and the second sub-branch are 90°.

9. The antenna structure according to claim 1, wherein: The radiation unit further includes a parasitic radiation branch connected to an end of the main radiation branch away from the feeding unit.

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

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