Radiating unit, antenna device, shell and electronic equipment

Abstract

The invention provides a radiation unit, an antenna device, a shell and electronic equipment, and belongs to the technical field of antennas. The radiation unit comprises a patch body and a feed assembly. The feed assembly comprises a first feed structure and a second feed structure; the first feed structure and the second feed structure respectively extend into the patch body; the patch body is provided with a groove structure and a branch structure; the slot structure is in coupling connection with the first feed structure and the second feed structure, and the slot structure can excite a group of mutually orthogonal first characteristic mode resonance under the excitation of the first feed structure and the second feed structure; the branch structure is in coupling connection with the first feed structure and the second feed structure, and the branch structure can excite a group of mutually orthogonal second characteristic mode resonance under the excitation of the first feed structure and the second feed structure. According to the radiation unit, the isolation degree can be improved to 20 dB or above, the 5G frequency band can be covered, and the application requirement of a 5G terminal antenna is met.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a radiation unit, an antenna device, a housing and an electronic device. Background Art

[0002] Multiple-Input Multiple-Output (MIMO) is a very effective technology for increasing channel capacity. It is considered one of the key technologies for the fifth generation (5G) mobile communication system. However, the mutual coupling between MIMO antennas will reduce the channel capacity in the communication system. In order to coexist with the original 2G / 3G / 4G antennas, it is a common design to place MIMO antennas on the metal frame of electronic devices, but it is difficult to achieve a balance between wide bandwidth, high isolation and small size.

[0003] How to make full use of the limited space of electronic equipment and combine the performance of low profile, small size, wide bandwidth and high isolation is the design difficulty of MIMO antenna. Summary of the invention

[0004] The present application provides a radiation unit, an antenna device, a housing and an electronic device, which have the properties of low profile, small size, wide bandwidth and high isolation, and can make full use of the limited space of the electronic device and improve the wireless communication efficiency of the electronic device.

[0005] The technical solution is as follows:

[0006] In one aspect, a radiating unit is provided, the radiating unit comprising: a patch body and a feeding component;

[0007] The feeding assembly comprises a first feeding structure and a second feeding structure; the first feeding structure and the second feeding structure extend into the patch body respectively;

[0008] The patch body is provided with a groove structure and a branch structure;

[0009] The slot structure is coupled to the first feeding structure and the second feeding structure respectively, and the slot structure can excite a set of mutually orthogonal first characteristic mode resonances under the excitation of the first feeding structure and the second feeding structure;

[0010] The branch structures are coupled to the first feeding structure and the second feeding structure respectively, and the branch structures can excite a group of mutually orthogonal second characteristic mode resonances under the excitation of the first feeding structure and the second feeding structure.

[0011] In some embodiments, the first characteristic mode resonance corresponds to a first operating frequency, the second characteristic mode resonance corresponds to a second operating frequency, and the first operating frequency is less than the second operating frequency.

[0012] In some embodiments, the first operating frequency is 3.4 GHz and the second operating frequency is 3.8 GHz.

[0013] In some embodiments, the patch body is square;

[0014] The first feeding structure is located at a first side of the patch body, the second feeding structure is located at a second side of the patch body, and the first side is vertically connected to the second side;

[0015] The first feeding structure extends along the first side toward the inside of the patch body, the second feeding structure extends along the second side toward the inside of the patch body, and the extension directions of the first feeding structure and the second feeding structure are perpendicular.

[0016] In some embodiments, the patch body is provided with a first avoidance groove and a second avoidance groove, the first feeding structure is located in the first avoidance groove, and the second feeding structure is located in the second avoidance groove.

[0017] In some embodiments, the first feeding structure includes a first feeding branch and a second feeding branch; the first feeding branch extends along the first side toward the inside of the patch body, and the second feeding branch is located at the end of the first feeding branch and is vertically connected to the first feeding branch;

[0018] and / or,

[0019] The second feeding structure includes a third feeding branch and a fourth feeding branch; the third feeding branch extends along the second side toward the inside of the patch body, and the fourth feeding branch is located at the end of the first feeding branch and is vertically connected to the third feeding branch.

[0020] In some embodiments, the lengths of the first feeding branch and the third feeding branch are L1, the lengths of the second feeding branch and the fourth feeding branch are L2, and the side length of the patch body is a1; satisfying,

[0021] The value range of L2 / L1 is 0.7-1.1, and / or the value range of a1 / L1 is 5-6.

[0022] In some embodiments, the slot structure includes a square slot and four right-angle slots, and the four right-angle slots are respectively located at four corners of the square slot;

[0023] The square groove separates the patch body into a first square patch and an annular patch, the first square patch is located on the inner side of the square groove, and the annular patch is located on the outer side of the square groove;

[0024] The four right-angle grooves separate the first square patch into a cross-shaped patch and four second square patches.

[0025] In some embodiments, the patch body is square, and the sides of the square groove are respectively parallel to the sides of the patch body;

[0026] The first feeding structure sequentially passes through the annular patch and the square slot and then extends to the first cantilever of the cross-shaped patch. The second feeding structure sequentially passes through the annular patch and the square slot and then extends to the second cantilever of the cross-shaped patch. The first cantilever and the second cantilever are adjacent to each other.

[0027] In some embodiments, the side length of the patch body is a1, the side length of the square groove is a2, and the side length of the right-angle groove is a3; satisfying,

[0028] The value range of a1 / a2 is 1-2, and / or the value range of a1 / a3 is 5-6.

[0029] In some embodiments, the width of the square groove is w1, and the width of the right-angle groove is w2; and the value range of w1 / w2 is 0.3-0.7.

[0030] In some embodiments, the number of the branch structures is four, and the four branch structures are respectively located in the areas of the annular patch corresponding to the four sides of the square groove.

[0031] In some embodiments, four T-shaped slots are provided on the annular patch, and the symmetrical arms of each T-shaped slot are arranged in parallel and spaced apart from one of the side edges of the square slot, and the single cantilever of the T-shaped slot is located on the side of the symmetrical arm away from the square slot and extends to the outer edge of the annular patch; the four T-shaped slots separate the annular patch into four branch structures.

[0032] In some embodiments, the length of the symmetrical arm is L3, the length of the single cantilever is L4, and the value range of L3 / L4 is 28.7-32.7;

[0033] and / or,

[0034] The width of the symmetrical arm is w3, and the distance between the symmetrical arm and the square groove is s1, so that the value range of w3 / s1 is 0.7-1.1.

[0035] In some embodiments, the radiation unit further includes a grounding point, and the grounding point is located at four corners of the patch body and at least one of the four branch structures.

[0036] In some embodiments, when the branch structure is formed by the T-shaped slot separation, the grounding points include four first grounding points and eight second grounding points;

[0037] The four first grounding points are respectively located at four corners of the patch body;

[0038] The eight second grounding points are arranged in groups of two between the T-shaped slot and the slot structure, and each group of two second grounding points are symmetrical along the symmetry line of the T-shaped slot.

[0039] In some embodiments, the diameter of the first grounding point is d1, the diameter of the second grounding point is d2, and the value range of d1 / d2 is 0.65-0.85.

[0040] On the other hand, an antenna device is provided, the antenna device comprising: at least one radiating unit, a dielectric layer and a floor layer; wherein the at least one radiating unit is as described in the present application;

[0041] The at least one radiation unit and the floor layer are respectively located on two surfaces of the dielectric layer, and the at least one radiation unit is electrically connected to the floor layer.

[0042] In some embodiments, the number of the radiation units is four, and the four radiation units are arranged in a quadrilateral;

[0043] The interval between two adjacent radiation units along the first direction is s2, and the interval between two adjacent radiation units along the second direction is s3, and the first direction is perpendicular to the second direction;

[0044] The value range of s2 is 86mm-106mm, and the value range of s3 is 11mm-31mm.

[0045] In some embodiments, the antenna device further includes at least one metallized hole, and the at least one metallized hole penetrates the dielectric layer to electrically connect a ground point of the at least one radiation unit with the floor layer.

[0046] On the other hand, a shell is provided, wherein the shell includes the antenna device described in the present application.

[0047] On the other hand, an electronic device is provided, which includes the radiation unit, the antenna device or the housing described in the present application.

[0048] The beneficial effects of the technical solution provided by this application include at least:

[0049] The radiation unit of the present application utilizes the slot structure of the patch body to excite a set of mutually orthogonal first characteristic mode resonances, and utilizes the branch structure of the patch body to excite a set of mutually orthogonal second characteristic mode resonances. Due to the orthogonality of the two sets of characteristic modes, without using any additional decoupling structure and differential feeding circuit, the isolation between the antennas corresponding to the two feeding structures in the radiation unit can be improved to more than 20dB, which can cover the 5G communication sub6GHz n78 frequency band and achieve a radiation efficiency of more than 30%, meeting the application requirements of 5G terminal antennas.

[0050] The radiation unit has the advantages of compact structure, low profile, wide bandwidth, etc. It can be integrated on the housing of the electronic device to reduce the internal space occupied by the electronic device, which is in line with the development trend of communication antennas of electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments 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 these drawings without creative work.

[0052] Figure 1 is a schematic diagram of the structure of a radiation unit provided in an embodiment of the present application;

[0053] Figure 2 is a schematic diagram of the relative positions of the patch body and the feeding component provided in an embodiment of the present application;

[0054] Figure 3 is a schematic structural diagram of a first square patch provided in an embodiment of the present application;

[0055] Figure 4 is a schematic diagram of the structure of the annular patch provided in an embodiment of the present application;

[0056] Figure 5 This is an S parameter simulation effect diagram of the radiation patch provided in the embodiment of the present application;

[0057] Figure 6 is a schematic diagram of the structure of the antenna module provided in an embodiment of the present application;

[0058] Figure 7 is a structural schematic diagram of an antenna module provided in another embodiment of the present application;

[0059] Figure 8 This is an S parameter simulation effect diagram of the antenna module provided in the embodiment of the present application;

[0060] Fig. 9 This is a simulation effect diagram of the radiation efficiency of the antenna module provided in the embodiment of the present application;

[0061] Fig.10 This is a gain simulation effect diagram of the antenna module provided in an embodiment of the present application.

[0062] The reference numerals in the figures represent respectively:

[0063] 100, radiation unit; 200, dielectric layer; 300, floor layer; 400, metallized hole;

[0064] 1. Patch body;

[0065] 101, first side; 102, second side; 103, first square patch; 1031, cross patch; 10311, first cantilever; 10312, second cantilever; 1032, second square patch; 104, annular patch;

[0066] 11. slot structure; 111. square slot; 112. right angle slot;

[0067] 12. Branch structure; 13. T-slot; 131. Symmetrical arm; 132. Single cantilever;

[0068] 13. The first avoidance slot;

[0069] 14. Second avoidance slot;

[0070] 2. Feeding components;

[0071] 21. a first feeding structure; 211. a first feeding branch; 212. a second feeding branch;

[0072] 22, second feeding structure; 221, third feeding branch; 222, fourth feeding branch;

[0073] 3. Grounding point;

[0074] 31. First grounding point;

[0075] 32. Second grounding point. DETAILED DESCRIPTION

[0076] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0077] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0079] Electronic devices in related technologies have a development trend of large screens and narrow bezels. In 5G communication systems, in order to increase the data transmission rate, electronic devices require multiple antennas for data transmission (8×8sub6GHz frequency band antennas, millimeter wave antenna arrays, etc.). So how to design and place all antennas in electronic devices within a limited space is also a difficult design problem for antennas in electronic devices today.

[0080] In order to coexist with the original 2G / 3G / 4G antenna, it is a common design to place the 5G antenna on the metal frame of the mobile phone. However, for this solution, additional decoupling structures and differential feeding circuits are required to reduce the mutual coupling between antennas, such as spatial diversity, parasitic resonance decoupling, self-isolation, polarization diversity and high-order mode decoupling, etc. However, the use of decoupling structures and differential feeding circuits makes it difficult for these methods to achieve a balance between wide bandwidth, high isolation and small size.

[0081] The characteristic mode theory provides another new perspective for the design of broadband MIMO antennas. The characteristic mode theory defines a series of characteristic currents on the antenna. Each characteristic current has a corresponding characteristic electric field. The phase difference between the characteristic electric field and the characteristic current is defined as the characteristic angle. When the characteristic angle is 180°, the relevant characteristic mode will be in a resonant state. The characteristic mode theory provides a set of basic currents to ensure the orthogonality of the far-field radiation pattern. Therefore, high isolation MIMO antennas can be realized by using characteristic modes.

[0082] Therefore, the present application provides a radiating unit, which utilizes the characteristic mode theory and achieves a high isolation of more than 20 dB between the corresponding antennas of the two feeding structures in the radiating unit without using any additional decoupling structure and differential feeding circuit.

[0083] The technical solution provided in this application is applicable to electronic devices that adopt one or more of the following communication technologies: Bluetooth (Blue Tooth, BT) communication technology, Global Positioning System (Global Positioning System, GPS) communication technology, Wireless Fidelity (Wireless Fidelity, WiFi) communication technology, Global System For mobile communications (Global System For mobile Communications, GSM) communication technology, Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) communication technology, Long Term Evolution (Long Term Evolution, LTE) communication technology, 5G communication technology and other future communication technologies.

[0084] The electronic device in the embodiment of the present application may be a mobile phone, a tablet computer, a laptop computer, a smart bracelet, a smart watch, a smart helmet, smart glasses, etc. The electronic device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network, or an electronic device in a future Public Land Mobile Network (PLMN), etc., and the embodiment of the present application does not limit this.

[0085] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0086] On the one hand, combined with Figure 1 As shown, this embodiment provides a radiation unit 100 , which includes: a patch body 1 and a feeding component 2 .

[0087] The feeding assembly 2 includes a first feeding structure 21 and a second feeding structure 22 ; the first feeding structure 21 and the second feeding structure 22 extend into the patch body 1 respectively.

[0088] The patch body 1 is provided with a slot structure 11 and a branch structure 12; the slot structure 11 is coupled to the first feeding structure 21 and the second feeding structure 22 respectively, and the slot structure 11 can excite a group of mutually orthogonal first characteristic mode resonances under the excitation of the first feeding structure 21 and the second feeding structure 22; the branch structure 12 is coupled to the first feeding structure 21 and the second feeding structure 22 respectively, and the branch structure 12 can excite a group of mutually orthogonal second characteristic mode resonances under the excitation of the first feeding structure 21 and the second feeding structure 22.

[0089] The radiation unit 100 of this embodiment utilizes the slot structure 11 of the patch body 1 to excite a set of mutually orthogonal first characteristic mode resonances, and utilizes the branch structure 12 of the patch body 1 to excite a set of mutually orthogonal second characteristic mode resonances. Due to the orthogonality of the two sets of characteristic modes, without using any additional decoupling structure and differential feeding circuit, the isolation between the antennas corresponding to the two feeding structures in the radiation unit 100 can be improved to more than 20 dB, which can cover the 5G communication sub6GHz n78 frequency band and achieve a radiation efficiency greater than 30%, meeting the application requirements of 5G terminal antennas.

[0090] The radiation unit 100 of this embodiment utilizes the slot structure 11 and the branch structure 12 of the patch body 1 on the same plane to achieve high-isolation resonant radiation between the two feeding ports, does not rely on other electronic devices, has a simple feeding circuit structure, and has a small spatial thickness. It has the advantages of compact structure, low profile, and wide bandwidth, and can be integrated on the housing of an electronic device to reduce the occupancy of the internal space of the electronic device, which is in line with the development trend of communication antennas for electronic devices.

[0091] In some possible implementations, the first feeding structure 21 and the second feeding structure 22 are capacitive coupling feeding structures, respectively. The first feeding structure 21 and the second feeding structure 22 are respectively arranged at intervals from the patch body 1 to form a coupling gap.

[0092] Exemplarily, the coupling gap has a value range of 0.02 mm-0.3 mm, thereby achieving impedance bandwidth and high isolation performance of the radiation unit 100 .

[0093] Optionally, the value of the coupling gap is, for example, 0.02 mm, 0.04 mm, 0.06 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.24 mm, 0.26 mm, 0.28 mm, 0.3 mm, etc. Optionally, the value of the coupling gap is 0.1 mm.

[0094] In some possible implementations, the patch body 1, the first feeding structure 21 and the second feeding structure 22 may be formed by grooving and cutting the entire square patch according to the target shape, or the patch body 1, the first feeding structure 21 and the second feeding structure 22 may be formed separately and then connected according to the target shape. Figure 1 The target positions shown are assembled together.

[0095] Optionally, the patch body 1, the first feeding structure 21 and the second feeding structure 22 are formed based on the entire square copper-clad patch by using processes such as grooving and cutting.

[0096] In case of need of instructions, when the radiation unit 100 is working, it can be arranged on the surface of a non-conductive dielectric substrate, and a floor is set on the other side of the dielectric substrate. After the first feeding structure 21 and the second feeding structure 22 input the feeding signal, the slot structure 11 and the branch structure 12 are respectively excited to generate a first characteristic mode resonance and a second characteristic mode resonance, thereby radiating electromagnetic waves of corresponding frequencies outward.

[0097] In some embodiments, the first characteristic mode resonance corresponds to the first operating frequency, the second characteristic mode resonance corresponds to the second operating frequency, and the first operating frequency is less than the second operating frequency. By using the first characteristic mode resonance and the second characteristic mode resonance to respectively realize the excitation of the first operating frequency and the second operating frequency, the operating bandwidth of the radiation unit 100 can be widened, and the operating performance of the radiation unit 100 can be improved.

[0098] In some embodiments, the first operating frequency is 3.4 GHz and the second operating frequency is 3.8 GHz, so that the radiation unit 100 can achieve frequency radiation of 3.4 GHz-3.8 GHz, achieve coverage of the 5G communication sub6 GHz n78 frequency band, and meet the application requirements of 5G terminal antennas.

[0099] Combination Figure 1 As shown, in some embodiments, the patch body 1 is square.

[0100] The first feeding structure 21 is located at the first side 101 of the patch body 1 , and the second feeding structure 22 is located at the second side 102 of the patch body 1 . The first side 101 and the second side 102 are vertically connected.

[0101] The first feeding structure 21 extends along the first side 101 toward the inside of the patch body 1 , and the second feeding structure 22 extends along the second side 102 toward the inside of the patch body 1 , and the extension directions of the first feeding structure 21 and the second feeding structure 22 are perpendicular.

[0102] By arranging the first feeding structure 21 and the second feeding structure 22 on two sides of the patch body 1 respectively, the patch body 1 has an orthogonal characteristic, thereby being able to achieve the excitation of the characteristic mode with the orthogonal characteristic.

[0103] Combination Figure 2 As shown, in some embodiments, the patch body 1 is provided with a first avoidance groove 13 and a second avoidance groove 14, the first feeding structure 21 is located in the first avoidance groove 13, and the second feeding structure 22 is located in the second avoidance groove 14. The first feeding structure 21 is spaced apart from the edge of the first avoidance groove 13 to form a coupling gap, and the second feeding structure 22 is spaced apart from the edge of the second avoidance groove 14 to form a coupling gap.

[0104] The patch body 1 is provided with a first avoidance groove 13 and a second avoidance groove 14 to accommodate the first feeding structure 21 and the second feeding structure 22, and a coupling gap formed by the edge of the avoidance groove and the spacing between the feeding structures is used to realize capacitive coupling feeding of the first feeding structure 21 and the second feeding structure 22.

[0105] Combination Figure 2 As shown, in some embodiments, the first feeding structure 21 includes a first feeding branch 211 and a second feeding branch 212; the first feeding branch 211 extends along the first side 101 toward the inside of the patch body 1, and the second feeding branch 212 is located at the end of the first feeding branch 211 and is vertically connected to the first feeding branch 211.

[0106] Among them, the first feeding branch 211 is a rectangular microstrip line feeding structure, one end of the first feeding branch 211 is flush with the edge of the patch body 1, which is convenient for feeding connection, and the first feeding branch 211 and the second feeding branch 212 are arranged in a T shape, so that the radiation unit 100 can achieve a frequency coverage of 3.4GHz-3.8GHz.

[0107] Combination Figure 2 As shown, in some embodiments, the second feeding structure 22 includes a third feeding branch 221 and a fourth feeding branch 222; the third feeding branch 221 extends along the second side 102 toward the inside of the patch body 1, and the fourth feeding branch 222 is located at the end of the first feeding branch 211 and is vertically connected to the third feeding branch 221.

[0108] Among them, the third feeding branch 221 is a rectangular microstrip line feeding structure, one end of the third feeding branch 221 is flush with the edge of the patch body 1, which is convenient for feeding connection, and the third feeding branch 221 and the fourth feeding branch 222 are arranged in a T shape, so that the radiation unit 100 can achieve a frequency coverage of 3.4GHz-3.8GHz.

[0109] In some possible implementations, the radiation unit 100 is fed by a coaxial feed line, wherein the inner core of the coaxial feed line is electrically connected to the first feeding structure 21 or the second feeding structure 22, and the outer conductor of the coaxial feed line is electrically connected to the floor, thereby realizing feeding excitation of the radiation unit 100.

[0110] Combination Figure 2 As shown, in some embodiments, the lengths of the first feeding branch 211 and the third feeding branch 221 are L1, the lengths of the second feeding branch 212 and the fourth feeding branch 222 are L2, and the side length of the patch body 1 is a1; satisfying that the value range of L2 / L1 is 0.7-1.1, and / or the value range of a1 / L1 is 5-6.

[0111] When the sizes of the first feeding structure 21 and the second feeding structure 22 meet the above-mentioned value range, the radiation unit 100 of the present application can achieve high isolation of more than 20dB, can cover the 5G communication sub6GHz n78 frequency band, and achieve a radiation efficiency greater than 30%, which can meet the application requirements of 5G terminal antennas.

[0112] Exemplarily, the value of L2 / L1 is, for example, 0.7, 0.8, 0.9, 1.0, 1.1, etc. Optionally, the value of L2 / L1 is 0.9.

[0113] In another exemplary embodiment, the value of a1 / L1 is, for example, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6, etc. Optionally, the value of a1 / L1 is 5.4.

[0114] In some possible implementations, the length L1 of the first feeding branch 211 and the third feeding branch 221 ranges from 4 mm to 6 mm.

[0115] Exemplarily, the value of L1 is, for example, 4 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm, 5 mm, 5.2 mm, 5.4 mm, 5.6 mm, 5.8 mm, 6 mm, etc. Optionally, the value of L1 is 5 mm.

[0116] In some other possible implementations, the length L2 of the second feeding branch 212 and the fourth feeding branch 222 ranges from 3.5 mm to 5.5 mm.

[0117] Exemplarily, the value of L2 is, for example, 3.5 mm, 4 mm, 4.2 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.8 mm, 5 mm, 5.5 mm, etc. Optionally, the value of L2 is 4.5 mm.

[0118] In some other possible implementations, the side length a1 of the patch body 1 ranges from 17 mm to 37 mm.

[0119] Exemplarily, the value of a1 is, for example, 17 mm, 19 mm, 21 mm, 23 mm, 25 mm, 27 mm, 29 mm, 31 mm, 33 mm, 35 mm, 37 mm, 39 mm, 41 mm, 43 mm, 45 mm, 47 mm, etc. Optionally, the value of a1 is 27 mm.

[0120] Combination Figure 2-4 As shown, in some embodiments, the slot structure 11 includes a square slot 111 and four right-angle slots 112 , and the four right-angle slots 112 are respectively located at the four corners of the square slot 111 .

[0121] The square groove 111 separates the patch body 1 into a first square patch 103 and an annular patch 104 . The first square patch 103 is located inside the square groove 111 , and the annular patch 104 is located outside the square groove 111 .

[0122] The four right-angle grooves 112 separate the first square patch 103 into a cross-shaped patch 1031 and four second square patches 1032 .

[0123] The slot structure 11 of this embodiment includes a square slot 111 and four right-angle slots 112, wherein the square slot 111 is a closed narrow ring slot extending along the outline of a square, and the square slot 111 can be used to separate the patch body 1 into a square first square patch 103 on the inside and a square ring patch 104 on the outside. The four right-angle slots 112 are respectively located at the four corners of the square slot 111, and the first square patch 103 is divided twice to separate four second square patches 1032 with smaller areas, and the rest of the first square patch 103 forms a cross-shaped patch 1031.

[0124] The radiation unit 100 of this embodiment uses the cross-shaped patch 1031 and the four second square patches 1032 to achieve the excitation of the first characteristic mode resonance.

[0125] Exemplarily, the cross-shaped patch 1031 has four cantilevers that are 90° apart and protrude toward the outside.

[0126] Combination Figure 2-4 As shown, in some embodiments, the patch body 1 is square, and the sides of the square groove 111 are respectively parallel to the sides of the patch body 1 .

[0127] The first feeding structure 21 sequentially passes through the annular patch 104 and the square slot 111 and then extends to the first cantilever 10311 of the cross-shaped patch 1031. The second feeding structure 22 sequentially passes through the annular patch 104 and the square slot 111 and then extends to the second cantilever 10312 of the cross-shaped patch 1031. The first cantilever 10311 and the second cantilever 10312 are located vertically adjacent to each other at 90°.

[0128] By extending the first feeding structure 21 from the edge of the patch body 1 inward, through the annular patch 104 and the square slot 111 in sequence and then extending to the first cantilever 10311 of the cross-shaped patch 1031, the first feeding structure 21 can be coupled and connected to the annular patch 104, the cross-shaped patch 1031 and the second square patch 1032 respectively, thereby realizing coupled feeding of one of the ports of the radiation unit 100.

[0129] By extending the second feeding structure 22 from the edge of the patch body 1 inward, through the annular patch 104 and the square slot 111 in sequence and then extending to the second cantilever 10312 of the cross-shaped patch 1031, the second feeding structure 22 can be coupled and connected to the annular patch 104, the cross-shaped patch 1031 and the second square patch 1032 respectively, thereby realizing coupled feeding of another port of the radiation unit 100.

[0130] The first cantilever 10311 and the second cantilever 10312 are adjacent to each other and are arranged at an interval of 90°.

[0131] Combination Figure 2 As shown, in some embodiments, the side length of the patch body 1 is a1, the side length of the square groove 111 is a2, and the side length of the right-angle groove 112 is a3; satisfying that the value range of a1 / a2 is 1-2, and / or the value range of a1 / a3 is 5-6.

[0132] When the sizes of the square slot 111 and the right-angle slot 112 meet the above-mentioned value range, the radiation unit 100 of the present application can achieve high isolation of more than 20dB, can cover the 5G communication sub6GHz n78 frequency band, and achieve a radiation efficiency greater than 30%, which can meet the application requirements of 5G terminal antennas.

[0133] Exemplarily, the value of a1 / a2 is, for example, 1.1, 1.2, 1.3, 1.35, 1.36, 1.37, 1.38, 1.39, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, etc. Optionally, the value of a1 / a2 is 1.38.

[0134] In another exemplary embodiment, the value of a1 / a3 is, for example, 5, 5.1, 5.2, 5.25, 5.26, 5.27, 5.28, 5.29, 5.3, 5.31, 5.32, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6, etc. Optionally, the value of a1 / a3 is 5.29.

[0135] In some possible implementations, the side length a2 of the square groove 111 ranges from 15 mm to 25 mm.

[0136] Exemplarily, the value of a2 is, for example, 15 mm, 17 mm, 19 mm, 19.2 mm, 19.4 mm, 19.6 mm, 19.8 mm, 21 mm, 23 mm, 25 mm, etc. Optionally, the value of a2 is 19.6 mm.

[0137] In some other possible implementations, the side length a3 of the right-angle groove 112 ranges from 4.1 mm to 6.1 mm.

[0138] Exemplarily, the value of a3 is, for example, 4.1 mm, 4.3 mm, 4.5 mm, 4.7 mm, 5 mm, 5.1 mm, 5.3 mm, 5.5 mm, 5.7 mm, 6 mm, 6.1 mm, etc. Optionally, the value of a3 is 5.1 mm.

[0139] Combination Figure 2 As shown, in some embodiments, the width of the square groove 111 is w1, and the width of the right-angle groove 112 is w2; and the value range of w1 / w2 is 0.3-0.7.

[0140] When the width dimensions of the square slot 111 and the right-angle slot 112 meet the above-mentioned value range, the radiation unit 100 of the present application can achieve high isolation of more than 20dB, can cover the 5G communication sub6GHz n78 frequency band, and achieve a radiation efficiency greater than 30%, which can meet the application requirements of 5G terminal antennas.

[0141] Exemplarily, the value of w1 / w2 is, for example, 0.3, 0.4, 0.5, 0.6, 0.7, etc. Optionally, the value of w1 / w2 is 0.5.

[0142] In some possible implementations, the width w1 of the square groove 111 ranges from 0.1 mm to 0.3 mm.

[0143] Exemplarily, the value of w1 is, for example, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.24 mm, 0.26 mm, 0.28 mm, 0.3 mm, etc. Optionally, the value of w1 is 0.2 mm.

[0144] In some other possible implementations, the width w2 of the right-angle groove 112 is in the range of 0.3 mm to 0.5 mm.

[0145] Exemplarily, the value of w1 is, for example, 0.3 mm, 0.32 mm, 0.34 mm, 0.36 mm, 0.38 mm, 0.4 mm, 0.42 mm, 0.44 mm, 0.46 mm, 0.48 mm, 0.5 mm, etc. Optionally, the value of w2 is 0.4 mm.

[0146] Combination Figure 1 , 4 As shown, in some embodiments, the number of the branch structures 12 is four, and the four branch structures 12 are respectively located in the areas of the four sides of the annular patch 104 corresponding to the square groove 111 .

[0147] The radiation unit 100 of this embodiment utilizes four branch structures 12 arranged in the four side regions of the annular patch 104 corresponding to the square slot 111 to achieve the excitation of the second characteristic mode resonance.

[0148] Combination Figure 4 As shown, in some embodiments, four T-slots 13 are provided on the annular patch 104, and the symmetrical arms 131 of each T-slot 13 are respectively arranged in parallel with one of the side edges of the square groove 111, and the single cantilever 132 of the T-slot 13 is respectively located on the side of the symmetrical arm 131 away from the square groove 111, and extends to the outer edge of the annular patch 104; the four T-slots 13 separate the annular patch 104 into four branch structures 12.

[0149] Thus, each T-slot 13 can separate the four rectangular frame areas of the annular patch 104 into four C-shaped radiation structures, wherein the two branch structures 12 located on the first side 101 and the second side 102 of the patch body 1 are coupled to the first feeding structure 21 and the second feeding structure 22 respectively.

[0150] Combination Figure 4 As shown, in some embodiments, the length of the symmetrical arm 131 is L3, the length of the single cantilever 132 is L4, and the value range of L3 / L4 is 28.7-32.7.

[0151] When the size of the T-slot 13 meets the above-mentioned value range, the radiation unit 100 of the present application can achieve high isolation of more than 20dB, can cover the 5G communication sub6GHz n78 frequency band, and achieve a radiation efficiency greater than 30%, which can meet the application requirements of 5G terminal antennas.

[0152] Exemplarily, the value of L3 / L4 is, for example, 28.7, 29, 29.7, 30, 30.3, 30.5, 30.7, 30.7, 30.9, 31, 31.7, 32, 32.7, etc. Optionally, the value of L3 / L4 is 30.7.

[0153] In some possible implementations, the length L3 of the symmetrical arm 131 ranges from 17.5 mm to 25.5 mm.

[0154] Exemplarily, the value of L3 is, for example, 17.5 mm, 19.5 mm, 21 mm, 21.5 mm, 22 mm, 23.5 mm, 25.5 mm, etc. Optionally, the value of L3 is 21.5 mm.

[0155] In some other possible implementations, the length L4 of the single cantilever 132 ranges from 0.5 mm to 0.9 mm.

[0156] Exemplarily, the value of L4 is, for example, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, etc. Optionally, the value of L4 is 0.7 mm.

[0157] Combination Figure 4 As shown, in some embodiments, the width of the symmetrical arm 131 is w3, the distance between the symmetrical arm 131 and the square groove 111 is s1, and the value range of w3 / s1 is 0.7-1.1.

[0158] When the width and position dimensions of the T-slot 13 meet the above-mentioned value range, the radiation unit 100 of the present application can achieve high isolation of more than 20dB, can cover the 5G communication sub6GHz n78 frequency band, and achieve a radiation efficiency greater than 30%, which can meet the application requirements of 5G terminal antennas.

[0159] Exemplarily, the value of w3 / s1 is, for example, 0.7, 0.8, 0.9, 0.92, 0.94, 0.96, 0.98, 1.0, 1.1, etc. Optionally, the value of w3 / s1 is 0.92.

[0160] In some possible implementations, the width w3 of the symmetrical arm 131 ranges from 0.8 mm to 1.6 mm.

[0161] Exemplarily, the value of w3 is, for example, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, etc. Optionally, the value of w3 is 1.2 mm.

[0162] In some possible implementations, the distance s1 between the symmetrical arm 131 and the square groove 111 ranges from 0.9 mm to 1.7 mm.

[0163] Exemplarily, the value of s1 is, for example, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, etc. Optionally, the value of s1 is 1.3 mm.

[0164] Combination Figure 1 , 4As shown, in some embodiments, the radiation unit 100 further includes a grounding point 3, which is located at the four corners of the patch body 1 and at least one of the four branch structures 12. The grounding point 3 can be used to achieve grounding of the slot patch body 1 and realize signal radiation of the radiation unit 100.

[0165] Exemplarily, the grounding point 3 can be located at one, two, three or all of the four corners of the patch body 1; the grounding point 3 can also be located at one, two, three or all of the four branch structures 12; the grounding point 3 can also be located on at least one of the four corners of the patch body 1 and at least one of the four branch structures 12, and the number of corners and branch structures 12 where the grounding point 3 is arranged can be one, two, three or four.

[0166] Combination Figure 1 , 4 As shown, in some embodiments, when the branch structure 12 is formed by separating the T-slot 13, the grounding point 3 includes four first grounding points 31 and eight second grounding points 32; the four first grounding points 31 are respectively located at the four corners of the patch body 1; the eight second grounding points 32 are respectively arranged in groups of two between the T-slot 13 and the slot structure 11, and each group of two second grounding points 32 is symmetrical along the symmetry line of the T-slot 13. The second grounding points 32 can realize the nodes of the branch structure 12, thereby avoiding the influence of other modes.

[0167] When the number and positions of the grounding points 3 are as described above, the radiation unit 100 of the present application can achieve a high isolation of more than 20dB, can cover the 5G communication sub6GHz n78 frequency band, and achieve a radiation efficiency greater than 30%, which can meet the application requirements of 5G terminal antennas.

[0168] Combination Figure 2 As shown, in some embodiments, the diameter of the first grounding point 31 is d1, the diameter of the second grounding point 32 is d2, and the value range of d1 / d2 is 0.65-0.85.

[0169] When the diameter of the grounding point 3 meets the above-mentioned value range, the radiation unit 100 of the present application can achieve high isolation of more than 20dB, can cover the 5G communication sub6GHz n78 frequency band, and achieve a radiation efficiency greater than 30%, which can meet the application requirements of 5G terminal antennas.

[0170] Figure 5 The S parameter simulation effect diagram of the radiation patch provided in the embodiment of the present application, wherein S(1,1) represents input matching, S(2,1) represents gain, S(1,2) represents isolation, and S(2,2) represents output matching. Figure 5It can be seen that the radiation unit 100 of the present application achieves a reflection coefficient less than -6dB and a port isolation greater than 20dB in the 3.3-3.8GHz frequency band.

[0171] On the other hand, combined Figure 6 , 7 As shown, this embodiment provides an antenna device, which includes: at least one radiation unit 100, a dielectric layer 200 and a floor layer 300; wherein at least one radiation unit 100 is as described in the present application; at least one radiation unit 100 and the floor layer 300 are respectively located on two surfaces of the dielectric layer 200, and at least one radiation unit 100 is electrically connected to the floor layer 300.

[0172] The antenna device of this embodiment adopts the radiation unit 100 of the present application and has all the technical effects of the present application.

[0173] In some possible implementations, the material of the dielectric layer 200 is FR4, the relative dielectric constant is 4.4, and the loss tangent is 0.02. The thickness of the dielectric layer 200 ranges from 1.4 mm to 1.8 mm.

[0174] Exemplarily, the thickness of the dielectric layer 200 is, for example, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, etc. Optionally, the thickness of the dielectric layer 200 is 1.6 mm.

[0175] Combination Figure 7 As shown, in some embodiments, the number of radiation units 100 is four, and the four radiation units 100 are arranged in a quadrilateral; the interval between two adjacent radiation units 100 along the first direction is s2, and the interval between two adjacent radiation units 100 along the second direction is s3, and the first direction is perpendicular to the second direction; it is satisfied that the value range of s2 is 86mm-106mm, and the value range of s3 is 11mm-31mm.

[0176] When the number and position of the radiation units 100 meet the above-mentioned value range, the 8×8 MIMO antenna formed by the antenna module of the present application can cover the operating frequency band of 3.3-3.8 GHz, and achieve an isolation greater than 20 dB, a radiation efficiency greater than 30%, and a gain greater than -2 dB within the operating frequency band.

[0177] Exemplarily, the value of s2 is, for example, 86 mm, 88 mm, 90 mm, 92 mm, 94 mm, 96 mm, 98 mm, 100 mm, 102 mm, 104 mm, 106 mm, etc. Optionally, the value of s2 is 96 mm.

[0178] In another exemplary embodiment, the value of s3 is, for example, 11 mm, 13 mm, 15 mm, 17 mm, 19 mm, 21 mm, 23 mm, 25 mm, 27 mm, 29 mm, 31 mm, etc. Optionally, the value of s3 is 21 mm.

[0179] In some possible implementations, the first feeding structure 21 and the second feeding structure 22 in each radiation unit 100 are respectively located on a side away from an adjacent radiation unit 100 , thereby facilitating feeder connection to each radiation unit 100 from the outside.

[0180] For example, refer to Figure 7 The dielectric layer 200 is in a rectangular shape, and the four radiation units 100 are respectively located at the four corners of the dielectric layer 200, wherein one of the two feeding structures of the radiation unit 100 on the left side of the upper end faces the upper end, and the other faces the left side; one of the two feeding structures of the radiation unit 100 on the right side of the upper end faces the upper end, and the other faces the right side; one of the two feeding structures of the radiation unit 100 on the left side of the lower end faces the lower end, and the other faces the left side; one of the two feeding structures of the radiation unit 100 on the right side of the lower end faces the lower end, and the other faces the right side.

[0181] Combination Figure 6 As shown, in some embodiments, the antenna device further includes at least one metalized hole 400, and the at least one metalized hole 400 penetrates the dielectric layer 200 to electrically connect the grounding point 3 of at least one radiation unit 100 with the floor layer 300. The metalized hole 400 or hole metallization refers to a process of plating a layer of conductive metal on the insulating hole wall by chemical plating and electroplating in the hole so that they can be reliably electrically connected to each other.

[0182] By using at least one metallized hole 400 penetrating the dielectric layer 200 , the radiation unit 100 is electrically connected to the floor layer 300 , which is used for grounding during the operation of the radiation unit 100 .

[0183] In some possible implementations, each radiation unit 100 is connected to the floor layer 300 through twelve metallized holes 400, wherein four metallized holes 400 correspond to the first grounding point 31, and the diameters of the four metallized holes 400 are consistent with the first grounding point 31, and the other eight metallized holes 400 correspond to the second grounding point 32, and the diameters of the eight metallized holes 400 are consistent with the second grounding point 32.

[0184] refer to Figure 8-10, where S(1,1) represents input matching, S(2,2) represents output matching, S(2,1) represents gain, and S(4,1) and S(3,2) represent far-end crosstalk. It can be seen that the 8×8 MIMO antenna device provided by the present application can cover the operating frequency band of 3.3-3.8 GHz, and achieves an isolation greater than 20 dB, a radiation efficiency greater than 30%, and a gain greater than -2 dB within the operating frequency band.

[0185] The radiation unit 100 is integrated with the dielectric layer 200 and the floor layer 300. The antenna device is more compact and occupies less space. It can be arranged in the back cover of an electronic device or other housing. The cross-section is only 1.6 mm and it occupies a smaller back cover area, which is in line with the development trend of mobile communication terminal antennas.

[0186] On the other hand, this embodiment provides a housing, which includes the antenna device of the present application. The housing of this embodiment adopts the antenna device of this embodiment and has all the technical effects of the present application.

[0187] The antenna device of the present application has the advantages of small size, low profile, high isolation, etc. After being integrated into the housing of an electronic device, it does not occupy the internal space of the electronic device, leaving more space on the frame of the electronic device for arranging other antennas, which is also beneficial to improving the radiation performance of other antennas.

[0188] In some possible implementations, the housing is a back cover, a battery cover, etc. of an electronic device. The housing is made of non-metallic materials, such as dielectric materials such as glass, plastic, and ceramic. Exemplarily, the antenna device is bonded and integrated on the inner side of the housing. In another exemplary embodiment, at least part of the material of the housing serves as the dielectric layer 200.

[0189] refer to Figure 7 The shell is used as the dielectric layer 200, and four radiation patches 100 are respectively located at four corners of the shell, so that the shell is integrated into an 8×8 MIMO antenna shell.

[0190] On the other hand, this embodiment provides an electronic device, which includes the radiation unit, antenna device or housing of this application. The electronic device of this embodiment adopts the radiation patch, antenna device or housing of this embodiment and has all the technical effects of this application.

[0191] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0192] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0193] In the description of this specification, the reference terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application.

[0194] The above description is only an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A radiation unit, characterized in that: The radiation unit (100) comprises: a patch body (1) and a feeding component (2); The feeding component (2) comprises a first feeding structure (21) and a second feeding structure (22); the first feeding structure (21) and the second feeding structure (22) respectively extend into the patch body (1); The patch body (1) is provided with a groove structure (11) and a branch structure (12); The slot structure (11) is coupled to the first feeding structure (21) and the second feeding structure (22) respectively, and the slot structure (11) can excite a set of mutually orthogonal first characteristic mode resonances under the excitation of the first feeding structure (21) and the second feeding structure (22); The branch structure (12) is coupled to the first feeding structure (21) and the second feeding structure (22) respectively, and the branch structure (12) can excite a set of mutually orthogonal second characteristic mode resonances under the excitation of the first feeding structure (21) and the second feeding structure (22).

2. The radiation unit according to claim 1, characterized in that: The first characteristic mode resonance corresponds to a first operating frequency, the second characteristic mode resonance corresponds to a second operating frequency, and the first operating frequency is less than the second operating frequency.

3. The radiation unit according to claim 2, characterized in that: The first operating frequency is 3.4 GHz, and the second operating frequency is 3.8 GHz.

4. The radiation unit according to claim 1, characterized in that: The patch body (1) is square; The first feeding structure (21) is located on a first side edge (101) of the patch body (1), and the second feeding structure (22) is located on a second side edge (102) of the patch body (1), and the first side edge (101) and the second side edge (102) are vertically connected; The first feeding structure (21) extends along the first side edge (101) toward the interior of the patch body (1), and the second feeding structure (22) extends along the second side edge (102) toward the interior of the patch body (1), and the extension directions of the first feeding structure (21) and the second feeding structure (22) are perpendicular.

5. The radiation unit according to claim 4, characterized in that: The patch body (1) is provided with a first avoidance groove (13) and a second avoidance groove (14); the first feeding structure (21) is located in the first avoidance groove (13); and the second feeding structure (22) is located in the second avoidance groove (14).

6. The radiation unit according to claim 4, characterized in that: The first feeding structure (21) comprises a first feeding branch (211) and a second feeding branch (212); the first feeding branch (211) extends along the first side edge (101) toward the inside of the patch body (1); the second feeding branch (212) is located at the end of the first feeding branch (211) and is vertically connected to the first feeding branch (211); and / or, The second feeding structure (22) comprises a third feeding branch (221) and a fourth feeding branch (222); the third feeding branch (221) extends along the second side edge (102) toward the inside of the patch body (1), and the fourth feeding branch (222) is located at the end of the first feeding branch (211) and is vertically connected to the third feeding branch (221).

7. The radiation unit according to claim 6, characterized in that: The lengths of the first feeding branch (211) and the third feeding branch (221) are L1 respectively, the lengths of the second feeding branch (212) and the fourth feeding branch (222) are L2 respectively, and the side length of the patch body (1) is a1; satisfying, The value range of L2 / L1 is 0.7-1.1, and / or the value range of a1 / L1 is 5-6.

8. The radiation unit according to any one of claims 1 to 7, characterized in that: The groove structure (11) comprises a square groove (111) and four right-angle grooves (112), and the four right-angle grooves (112) are respectively located at four corners of the square groove (111); The square groove (111) separates the patch body (1) into a first square patch (103) and an annular patch (104), wherein the first square patch (103) is located on the inner side of the square groove (111), and the annular patch (104) is located on the outer side of the square groove (111); The four right-angle grooves (112) separate the first square patch (103) into a cross-shaped patch (1031) and four second square patches (1032).

9. The radiation unit according to claim 8, characterized in that: The patch body (1) is square, and the side edges of the square groove (111) are respectively parallel to the side edges of the patch body (1); The first feeding structure (21) sequentially passes through the annular patch (104) and the square groove (111) and then extends to the first cantilever (10311) of the cross-shaped patch (1031); the second feeding structure (22) sequentially passes through the annular patch (104) and the square groove (111) and then extends to the second cantilever (10312) of the cross-shaped patch (1031); the first cantilever (10311) and the second cantilever (10312) are adjacent to each other.

10. The radiation unit according to claim 9, characterized in that: The side length of the patch body (1) is a1, the side length of the square groove (111) is a2, and the side length of the right-angle groove (112) is a3; satisfying, The value range of a1 / a2 is 1-2, and / or the value range of a1 / a3 is 5-6.

11. The radiation unit according to claim 9, characterized in that: The width of the square groove (111) is w1, and the width of the right-angle groove (112) is w2; and the value range of w1 / w2 is 0.3-0.

7.

12. The radiation unit according to any one of claims 8 to 11, characterized in that: The number of the branch structures (12) is four, and the four branch structures (12) are respectively located in the areas of the annular patch (104) corresponding to the four side edges of the square groove (111).

13. The radiation unit according to claim 12, characterized in that: The annular patch (104) is provided with four T-shaped slots (13); the symmetrical arms (131) of each T-shaped slot (13) are arranged in parallel and spaced relation to one of the side edges of the square slot (111); the single cantilever arms (132) of the T-shaped slot (13) are located on a side of the symmetrical arms (131) away from the square slot (111) and extend to the outer edge of the annular patch (104); the four T-shaped slots (13) separate the annular patch (104) into four branch structures (12).

14. The radiation unit according to claim 13, characterized in that: The length of the symmetrical arm (131) is L3, the length of the single cantilever (132) is L4, and the value range of L3 / L4 is 28.7-32.7; and / or, The width of the symmetrical arm (131) is w3, the distance between the symmetrical arm (131) and the square groove (111) is s1, and the value range of w3 / s1 is 0.7-1.

1.

15. The radiation unit according to any one of claims 1 to 14, characterized in that: The radiation unit (100) further comprises a grounding point (3), wherein the grounding point (3) is located at the four corners of the patch body (1) and at least one of the four branch structures (12).

16. The radiation unit according to claim 15, characterized in that: When the branch structure (12) is formed by dividing the T-shaped groove (13), the grounding point (3) includes four first grounding points (31) and eight second grounding points (32); The four first grounding points (31) are respectively located at four corners of the patch body (1); The eight second grounding points (32) are arranged in groups of two between the T-shaped slot (13) and the slot structure (11), and each group of two second grounding points (32) are symmetrical along the symmetry line of the T-shaped slot (13).

17. The radiation unit according to claim 16, characterized in that: The diameter of the first grounding point (31) is d1, and the diameter of the second grounding point (32) is d2, and the value range of d1 / d2 is 0.65-0.

85.

18. An antenna device, characterized in that: The antenna device comprises: at least one radiation unit (100), a dielectric layer (200) and a floor layer (300); wherein the at least one radiation unit (100) is as described in any one of claims 1 to 17; The at least one radiation unit (100) and the floor layer (300) are respectively located on two surfaces of the dielectric layer (200), and the at least one radiation unit (100) is electrically connected to the floor layer (300).

19. The antenna device according to claim 18, characterized in that The number of the radiation units (100) is four, and the four radiation units (100) are arranged in a quadrilateral; The interval between two adjacent radiation units (100) along the first direction is s2, and the interval between two adjacent radiation units (100) along the second direction is s3, and the first direction and the second direction are perpendicular to each other; The value range of s2 is 86mm-106mm, and the value range of s3 is 11mm-31mm.

20. The antenna device according to claim 18, characterized in that The antenna device further comprises at least one metallized hole (400), wherein the at least one metallized hole (400) penetrates the dielectric layer (200) to electrically connect the grounding point (3) of the at least one radiation unit (100) with the floor layer (300).

21. A housing, characterized in that: The housing includes the antenna device according to any one of claims 18 to 20.

22. An electronic device, characterized in that: The electronic device comprises the radiation unit (100) according to any one of claims 1 to 17, or the antenna device according to any one of claims 18 to 20, or the housing according to claim 21.

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