Antenna Structure, Antenna Module, Chip and Electronic Device

Abstract

The present application provides an antenna structure, an antenna module, a chip, and an electronic device, relating to the technical field of antennas. By arranging the first conductive member and the second conductive member in two spaced-apart regions on the second metal layer, when the antenna unit is in a working state, the current path includes the ground layer, the second conductive member, the second region of the second metal layer, the first region of the second metal layer, the first conductive member, and the first metal layer. Since the current can be transmitted between the first region and the second region of the second metal layer, the current path is bent. Compared with an antenna structure having the same current path and a straight-line current path, the cross-sectional height of the antenna structure in this embodiment is lower, and the antenna structure is conducive to realizing a thin-type setting.

Description

Technical Field

[0001] This application relates to the technical field of antennas, and particularly to an antenna structure, an antenna module, a chip and an electronic device. Background Art

[0002] With the rapid development of key technologies such as full-screen, the thinning and extreme screen-to-body ratio of electronic devices such as mobile phones have become a trend, and this design has greatly compressed the antenna arrangement space. In such an environment where the antenna arrangement is tight, traditional antennas are difficult to meet the performance requirements of multiple communication bands. In addition, there will be a situation where 3G, 4G, and 5G bands coexist in the mobile phone communication band for a long time, the number of antennas is increasing, and the frequency band coverage is becoming wider. Based on these changes, it has become an urgent task to implement a new type of antenna with miniaturization on mobile phones. Summary of the Invention

[0003] This application provides an antenna structure, an antenna module, a chip and an electronic device, and the antenna structure can be set to be miniaturized.

[0004] In a first aspect, this application provides an antenna structure. The antenna structure includes a grounding layer, a feeding unit, and an antenna unit. The antenna unit includes a first metal layer, a second metal layer, a first conductive member, and a second conductive member. The first metal layer is disposed opposite to the grounding layer and spaced apart from each other. The second metal layer is located between the first metal layer and the grounding layer, and is spaced apart from both the first metal layer and the grounding layer. The second metal layer includes a first region and a second region that are spaced apart. The first conductive member is connected between the first metal layer and the first region of the second metal layer. The second conductive member is connected between the grounding layer and the second region of the second metal layer.

[0005] The feeding unit is located on the side of the second metal layer facing the grounding layer. The feeding unit is used to feed the second metal layer and the first metal layer.

[0006] It can be understood that by dividing the first conductive member and the second conductive member into two regions and spacing them on the second metal layer, in this way, when the antenna unit is in a working state, the current path includes the grounding layer, the second conductive member, the second region of the second metal layer, the first region of the second metal layer, the first conductive member, and the first metal layer. Since the current can be transmitted between the first region and the second region of the second metal layer, the current path is bent. Compared with an antenna structure with the same current path and when the current path of the antenna structure is linear, the cross-sectional height of the antenna structure in this embodiment is lower, and the antenna structure is conducive to realizing a thin-type setting.

[0007] In one achievable manner, the first conductive member is a plurality of first metal posts. The second conductive member includes a first metal connection piece, a plurality of second metal posts, and a plurality of third metal posts. The first metal connection piece is located between the second metal layer and the ground layer. The plurality of second metal posts are connected between the first metal connection piece and the second region of the second metal layer. The plurality of third metal posts are connected between the first metal connection piece and the ground layer.

[0008] It can be understood that this antenna structure can be used for antennas that transmit and receive in the millimeter wave band. Exemplarily, the antenna structure can support frequency bands n257, n258, n259, n260, and n261. For example, the antenna structure can cover a frequency range from 24.25 GHz to 43.5 GHz.

[0009] In one achievable manner, the diameter of the third metal post is greater than the diameter of the second metal post.

[0010] It can be understood that when the diameter of the second metal post is small, the thickness of the dielectric layer wrapped around the second metal post can be made small. When the diameter of the third metal post is large, the thickness of the dielectric layer wrapped around the third metal post can be made large. In this way, in the antenna structure forming process, two dielectric plates with different thicknesses (one dielectric plate is provided with second metal posts, and the other dielectric plate is provided with third metal posts) can be stacked into a whole by bonding or welding.

[0011] In one achievable manner, the plurality of first metal posts are arranged in an L shape or an arc shape, the first metal connection piece is in an L shape or an arc shape, the plurality of second metal posts are arranged in an L shape or an arc shape, and the plurality of third metal posts are arranged in an L shape or an arc shape.

[0012] It can be understood that by setting the first metal connection piece in an L shape or an arc shape, arranging the plurality of second metal posts in an L shape or an arc shape, and arranging the plurality of third metal posts in an L shape or an arc shape, a space is enclosed by the second metal layer, the second metal posts, the third metal posts, the first metal connection piece, and the ground layer. In this way, this space can be used to arrange other components of the antenna structure. On the one hand, the space utilization rate of the antenna structure is high. On the other hand, the antenna structure can be compactly arranged, which is beneficial to the miniaturization of the antenna structure.

[0013] In one achievable manner, the projection of the third metal post on the first metal connection piece and the projection of the second metal post on the first metal connection piece at least partially overlap. In this way, the current path is set with a single bend. The antenna structure is relatively simple.

[0014] In an implementable manner, the first metal connecting piece includes a third region and a fourth region that are spaced apart. The second metal pillar is connected between the third region of the first metal connecting piece and the second region of the second metal layer. The third metal pillar is connected between the fourth region of the first metal connecting piece and the ground layer.

[0015] It can be understood that when the antenna unit is in the working state, the current path includes the ground layer, the third metal pillar, the fourth region of the first metal connecting piece, the third region of the first metal connecting piece, the second metal pillar, the second metal layer, the first metal pillar, and the first metal layer. At this time, since the current can be transmitted between the fourth region and the third region of the first metal connecting piece, and between two regions on the second metal layer, the current path is bent twice. Compared with the solution where the current path is bent once, the sectional height of the antenna structure in this implementation can be made lower. In this way, the thinning of the antenna structure is easier to achieve.

[0016] In an implementable manner, the number of antenna units is four. The four antenna units are arranged at intervals in 2 rows and 2 columns. The four antenna units have a center point. The four antenna units are the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit respectively.

[0017] Among them, the second conductive member of the first antenna unit is located on the side of the first conductive member of the first antenna unit away from the center point. The second conductive member of the second antenna unit is located on the side of the first conductive member of the second antenna unit away from the center point. The second conductive member of the third antenna unit is located on the side of the first conductive member of the third antenna unit away from the center point. The second conductive member of the fourth antenna unit is located on the side of the first conductive member of the fourth antenna unit away from the center point. In this way, the second conductive members of the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit can enclose a relatively large space.

[0018] In addition, the feeding unit is located in the space enclosed by the second conductive members of the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit. In this way, on the one hand, the space utilization rate of the antenna structure is relatively high. On the other hand, the antenna structure can be arranged compactly, which is beneficial to the miniaturization of the antenna structure.

[0019] In an implementable manner, the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit have a centrosymmetric structure.

[0020] In an implementable manner, the feeding unit includes a first feeding branch and a second feeding branch which are arranged at intervals. One end of the first feeding branch is located on the side of the second metal layer of the first antenna unit facing the grounding layer. The other end of the first feeding branch is located on the side of the second metal layer of the fourth antenna unit facing the grounding layer. The first feeding branch is used to feed the second metal layer of the first antenna unit, the first metal layer of the first antenna unit, the second metal layer of the fourth antenna unit, and the first metal layer of the fourth antenna unit. One end of the second feeding branch is located on the side of the second metal layer of the second antenna unit facing the grounding layer. The other end of the second feeding branch is located on the side of the second metal layer of the third antenna unit facing the grounding layer. The second feeding branch is used to feed the second metal layer of the second antenna unit, the first metal layer of the second antenna unit, the second metal layer of the third antenna unit, and the first metal layer of the third antenna unit.

[0021] It can be understood that the feeding unit can feed the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit simultaneously.

[0022] In an implementable manner, the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit are all symmetric structures. The symmetry planes of the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit all pass through the center point. The extending direction of the first feeding branch is parallel to the symmetry planes of the first antenna unit and the fourth antenna unit. The extending direction of the second feeding branch is parallel to the symmetry planes of the second antenna unit and the third antenna unit. In this way, the antenna structure can generate two polarizations. The first polarization is the -45° polarization of the antenna structure. The second polarization is the +45° polarization of the antenna structure.

[0023] In an implementable manner, the first feeding branch includes a first part, a second part, a third part, a fourth part, and a fifth part which are connected in sequence. The distances between the first part and the grounding layer, between the fifth part and the grounding layer, and between the second feeding branch and the grounding layer are all equal. The second part, the third part, and the fourth part are in a "U" shape, and the third part is located between the second feeding branch and the grounding layer. In this way, the distances between the first feeding branch and the second metal layer of the first antenna unit, between the first feeding branch and the second metal layer of the fourth antenna unit, between the second feeding branch and the second metal layer of the second antenna unit, and between the first feeding branch and the second metal layer of the third antenna unit can be equal to a large extent.

[0024] In an implementable manner, the distance between the first feeding branch and the grounding layer is greater than or less than the distance between the second feeding branch and the grounding layer. The structure of the feeding unit in this implementation manner is relatively simple.

[0025] In an implementable manner, the antenna structure further includes a plurality of metal shorting hole groups. The plurality of metal shorting hole groups are electrically connected to the ground layer and are located around the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit.

[0026] The first antenna unit and the second antenna unit form a first slot. The first slot and at least one metal shorting hole group are arranged in the extending direction of the first slot. The first antenna unit and the third antenna unit form a second slot. At least one metal shorting hole group is arranged in the extending direction of the second slot. The third antenna unit and the fourth antenna unit form a third slot. At least one metal shorting hole group is arranged in the extending direction of the third slot. The fourth antenna unit and the second antenna unit form a fourth slot. At least one metal shorting hole group is arranged in the extending direction of the fourth slot.

[0027] It can be understood that the antenna structure can have four resonant frequencies. On the one hand, in the frequency bands of n257, n258, n259, n260, and n261, the antenna structure can add a resonant point. On the other hand, in the frequency bands of n257, n258, n259, n260, and n261, the antenna structure can add a notch point.

[0028] In an implementable manner, the antenna structure further includes a plurality of matching via groups. The plurality of matching via groups are electrically connected to the ground layer. The plurality of matching via groups are located around the antenna unit. The plurality of matching via groups are arranged to surround the antenna unit.

[0029] It can be understood that by providing a plurality of spaced matching via groups on the ground layer, the matching via groups can increase the current path between the antenna unit and the ground layer. The matching via groups can be used to tune the impedance of the antenna structure to achieve impedance matching. In addition, since the matching via groups can increase the current path between the antenna unit and the ground layer, the sizes of the antenna unit and the ground layer in this embodiment can be made smaller, thereby realizing the miniaturization of the antenna structure.

[0030] In an implementable manner, the antenna structure further includes a dielectric layer. The ground layer, the feeding unit, and the antenna unit are all arranged on the dielectric layer. In this way, the integrity of the antenna structure is better and the stability is better.

[0031] In an implementable manner, the material of the dielectric layer is LCP. Since the loss tangent value of LCP remains relatively small at high frequencies, this can make the antenna structure have a small transmission loss, thereby improving the antenna radiation efficiency and obtaining a higher antenna gain.

[0032] In an implementable manner, the first conductive member is a first metal wall. The second conductive member includes a metal connecting piece, a second metal wall, and a third metal wall. The metal connecting piece is located between the second metal layer and the ground layer. The second metal wall is connected between the metal connecting piece and the second region of the second metal layer. The third metal wall is connected between the metal connecting piece and the ground layer.

[0033] It can be understood that the antenna structure of this implementation manner can support low frequencies. Exemplarily, the frequency band that the antenna structure can cover can be 1.5 GHz - 3 GHz.

[0034] In an implementable manner, the metal connecting piece includes a third region and a fourth region arranged at intervals. The second metal wall is connected between the third region of the metal connecting piece and the second region of the second metal layer. The third metal wall is connected between the fourth region of the metal connecting piece and the ground layer.

[0035] It can be understood that by arranging the second metal wall and the third metal wall in two regions at intervals on the metal connecting piece, and arranging the first metal wall and the second metal wall in two regions at intervals on the second metal layer, when the antenna unit is in the working state, the current path includes the ground layer, the third metal wall, the metal connecting piece, the second metal wall, the second metal layer, the first metal wall, and the first metal layer. Since the current can be transmitted between the third region and the fourth region of the metal connecting piece, and between the first region and the second region of the second metal layer, the current path can be arranged in a two - bend manner. In this way, compared with the antenna structure with the same current path and when the current path of the antenna structure is linear, the cross - sectional height of the antenna structure of this embodiment is lower, which is beneficial to the miniaturization setting of the antenna structure.

[0036] In an implementable manner, the projection of the third metal wall on the metal connecting piece and the projection of the second metal wall on the metal connecting piece at least partially overlap. In this way, the current path is arranged in a one - bend manner. The antenna structure is relatively simple.

[0037] In a second aspect, the present application provides an antenna module. A radio frequency circuit and the antenna structure as described above. The radio frequency circuit is electrically connected to the feeding unit of the antenna structure.

[0038] It can be understood that when the antenna structure is applied to the antenna module, since the antenna structure can be miniaturized, the antenna module can also be miniaturized.

[0039] In a third aspect, the present application provides an electronic device. The electronic device includes a circuit board and the antenna module as described above. The antenna module is arranged on the circuit board.

[0040] It can be understood that when the antenna module is applied to an electronic device, since the antenna module can be miniaturized, the electronic device can also be miniaturized.

[0041] In an implementable manner, the antenna structure and the circuit board are an integrally formed structure. In this way, the structure of the antenna module is simpler.

[0042] In a fourth aspect, the present application provides a chip. The chip includes a package substrate, an injection molding part, a chip body, and the antenna structure as described above. The antenna structure and the chip body are both disposed on the package substrate and electrically connected to the package substrate. The injection molding part is used to encapsulate the antenna structure and the chip body.

[0043] It can be understood that when the antenna structure is applied to a chip, since the antenna structure can be miniaturized, the chip can also be miniaturized.

[0044] In an implementable manner, the chip body is a radio frequency transceiver chip. The antenna structure is electrically connected to the chip body through the package substrate.

[0045] In a fifth aspect, the present application provides an electronic device. The electronic device includes a circuit board and the chip as described above. The chip is disposed on the circuit board.

[0046] It can be understood that when the chip is applied to an electronic device, since the chip can be miniaturized, the electronic device can also be miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic structural diagram of an embodiment of the electronic device provided by the present application;

[0048] Figure 2 is Figure 1 a partial exploded view of the electronic device shown;

[0049] Figure 3 is Figure 2 a partial exploded view of the circuit board assembly shown;

[0050] Figure 4 is Figure 3 a partial exploded view of the antenna structure shown;

[0051] Figure 5 is Figure 4 an exploded view of the first antenna unit and the second antenna unit shown;

[0052] Figure 6 is Figure 3 a partial structural diagram of the antenna structure shown;

[0053] Figure 7 is Figure 5 Schematic diagram of the first metal connecting piece and the second metal connecting piece of the first antenna unit shown;

[0054] Figure 8 is Figure 3 Partial schematic diagram of the antenna structure shown;

[0055] Fig. 9 is Figure 3 Partial schematic diagram of the antenna structure shown;

[0056] Fig.10 is Figure 5 Schematic diagram of the second metal sheet of the first antenna unit shown;

[0057] Fig.11 is Figure 3 Partial schematic diagram of the antenna structure shown;

[0058] Fig.12 is Figure 5 Schematic diagram of the first metal sheet of the first antenna unit shown;

[0059] Fig.13 is Figure 3 Partial schematic diagram of the antenna structure shown;

[0060] Fig.14 is Fig.13 Cross-sectional schematic diagram of the partial antenna structure at the A-A line shown;

[0061] Fig.15 is Figure 4 Exploded schematic diagram of the third antenna unit and the fourth antenna unit shown;

[0062] Fig.16 is Figure 3 Partial schematic diagram of the antenna structure shown;

[0063] Fig.17 is Figure 3 Partial schematic diagram of the antenna structure shown;

[0064] Fig.18 is Figure 3 Schematic diagram of the antenna structure shown;

[0065] Fig.19 is Figure 4 Schematic diagram of the feeding unit shown;

[0066] Fig. 20 is Figure 3 Partial schematic diagram of the antenna structure shown;

[0067] Fig.21 is Fig. 20 Schematic cross-sectional view of the antenna structure shown along line B-B;

[0068] Fig. 22 is Figure 3 Partial structural schematic diagram of the antenna structure shown;

[0069] Fig.23 is Fig. 22 Schematic cross-sectional view of the antenna structure shown along line C-C;

[0070] Fig.24 is Figure 3 Partial structural schematic diagram of the antenna structure shown;

[0071] Fig.25a Data graph showing the variation of the reflection coefficient of the antenna structure according to an embodiment of the present application with frequency;

[0072] Fig.25b A polarization schematic diagram of the antenna structure according to an embodiment of the present application;

[0073] Fig.25c Another polarization schematic diagram of the antenna structure according to an embodiment of the present application;

[0074] Fig.25d Partial cross-sectional schematic diagram of the package substrate structure of this embodiment;

[0075] Fig.26 Schematic diagram of another implementation manner of the first metal connection piece and the second metal connection piece of the first antenna unit provided by an embodiment of the present application;

[0076] Fig. 27 Partial structural schematic diagram of another implementation manner of the antenna structure provided by an embodiment of the present application;

[0077] Fig.28 Partial cross-sectional schematic diagram of another implementation manner of the antenna structure provided by an embodiment of the present application;

[0078] Fig.29 Schematic diagram of another implementation manner of the antenna structure provided by an embodiment of the present application;

[0079] Fig.30a Data graph showing the variation of the reflection coefficient of the antenna structure according to an embodiment of the present application with frequency;

[0080] Fig.30b Current schematic diagram of the antenna structure according to an embodiment of the present application in the n259 frequency band;

[0081] Fig.30c Schematic diagram of the electric field of the antenna structure according to an embodiment of the present application in the n259 frequency band;

[0082] Fig.30d It is a current schematic diagram of the antenna structure according to an embodiment of the present application in the n260 frequency band;

[0083] Fig.30e It is an electric field schematic diagram of the antenna structure according to an embodiment of the present application in the n260 frequency band;

[0084] Fig.31 It is a schematic structural diagram of another implementation manner of the antenna structure provided by an embodiment of the present application;

[0085] Fig.32a It is a data graph of the reflection coefficient of the antenna structure according to an embodiment of the present application varying with frequency;

[0086] Figure 32b It is a schematic cross-sectional diagram of the chip provided by an embodiment of the present application;

[0087] Fig.33 It is a schematic structural diagram of another embodiment of the electronic device provided by an embodiment of the present application;

[0088] Fig.34 is Fig.33 An exploded schematic diagram of the antenna structure shown;

[0089] Fig.35 is Fig.34 An exploded schematic diagram of the first antenna unit shown;

[0090] Fig.36 is Fig.33 A partial structural schematic diagram of the antenna structure shown;

[0091] Fig.37 is Fig.33 A partial structural schematic diagram of the antenna structure shown;

[0092] Fig.38 is Fig.33 A structural schematic diagram of the antenna structure shown. Detailed implementation manners

[0093] For facilitating the understanding of the antenna structure provided by the embodiments of the present application, the relevant terms involved in the present application are explained as follows:

[0094] It should be understood that in this application, "electrically connected" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines such as copper foils or wires of a Printed Circuit Board (PCB) that can transmit electrical signals. Among them, electrical connection includes direct connection and indirect coupling. "Connected" and "linked" can both refer to a mechanical connection relationship or a physical connection relationship. Taking "connected" as an example for illustration. "Connected" should be understood in a broad sense. For example, "connected" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For example, A being connected to B can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or A and B are in contact with each other and it is difficult to separate A and B.

[0095] In this application, "length" can be understood as the physical length of an object or the electrical length. The electrical length can be expressed as the ratio of the physical length (i.e., mechanical length or geometric length) multiplied by the transmission time of an electrical or electromagnetic signal in a medium to the time required for this signal to pass through a distance equal to the physical length of the medium in free space. The electrical length can satisfy the following formula:

[0096]

[0097] Where L is the physical length, a is the transmission time of the electrical or electromagnetic signal in the medium, and b is the transmission time in free space.

[0098] Alternatively, the electrical length can also be the ratio of the physical length (i.e., mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0099]

[0100] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0101] Coupling: Refers to the phenomenon that there is a close cooperation and mutual influence between the inputs and outputs of two or more circuit elements or electrical networks, and energy is transmitted from one side to the other through mutual interaction.

[0102] Antenna gain: Used to characterize the degree to which an antenna concentrates and radiates the input power. Generally, the narrower the main lobe and the smaller the side lobes of the antenna pattern, the higher the antenna gain.

[0103] Antenna radiation efficiency: It refers to the ratio of the power radiated into space by the antenna (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power, the ohmic loss power of the metal, and / or the dielectric loss power.

[0104] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the signal power transmitted by the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the higher the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0105] The antenna return loss can be represented by the S11 parameter, and the S11 parameter is usually negative. The smaller the S11 parameter, the smaller the antenna return loss and the higher the system efficiency of the antenna; the larger the S11 parameter, the larger the antenna return loss and the lower the system efficiency of the antenna.

[0106] Antenna isolation: It refers to the ratio of the signal received by another antenna when one antenna transmits a signal to the signal of the transmitting antenna. Isolation is a physical quantity used to measure the degree of mutual coupling of antennas. Assuming that two antennas form a two-port network, then the isolation between the two antennas is S21 and S12 between the antennas. The antenna isolation can be represented by the S21 and S12 parameters. The S21 and S12 parameters are usually negative. The smaller the S21 and S12 parameters, the larger the isolation between the antennas and the smaller the degree of mutual coupling of the antennas; the larger the S21 and S12 parameters, the smaller the isolation between the antennas and the larger the degree of mutual coupling of the antennas. The isolation of the antenna depends on the antenna radiation pattern, the spatial distance between the antennas, the antenna gain, etc.

[0107] Reference ground: It can be the ground layer of the circuit board of an electronic device (such as a mobile phone), or the ground layer formed by the middle board of the electronic device or the grounded metal layer formed by the metal film under the screen. The circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12- to 14-layer board with 8, 10, 12, 13, or 14 layers of conductive material, or components separated and electrically insulated by dielectric layers or insulating layers such as fiberglass, polymers, etc. The circuit board usually includes a dielectric substrate, a ground layer, and a trace layer, and the trace layer and the ground layer are electrically connected through vias. Components such as a display 120, a touch screen, input buttons, a transmitter, a processor, a memory, a battery 140, a charging circuit, a system on chip (SoC) structure, etc. can be installed on the circuit board or connected to the circuit board; or electrically connected to the trace layer and / or the ground layer in the circuit board. For example, a radio frequency source is disposed on the trace layer.

[0108] The above-mentioned ground layer, ground layer, and ground metal layer are made of a conductive material. The conductive material can be any one of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil on an insulating substrate, and tin-plated copper, cloth impregnated with graphite powder, graphite-coated substrate, copper-plated substrate, brass-plated substrate, and aluminum-plated substrate. Those skilled in the art can understand that the ground layer / ground layer / ground metal layer can also be made of other conductive materials.

[0109] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0110] In the description of the embodiments of the present application, "a plurality" means two or more than two. In the description of the embodiments of the present application, the range from A to B includes the endpoints A and B. In addition, the orientation terms mentioned in the embodiments of the present application, such as "top", "bottom", and "side", etc., are only with reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the embodiments of the present application.

[0111] In addition, in the embodiments of the present application, mathematical concepts such as symmetry, equality, 45°, parallelism, and perpendicularity are mentioned. These definitions are all in view of the current technological level, rather than absolute strict definitions in the mathematical sense. A small deviation is allowed, and approximate symmetry, approximate equality, approximate 45°, approximate parallelism, approximate perpendicularity, etc. are all acceptable. For example, when A is parallel to B, it means that A is parallel to B or approximately parallel to B, and the included angle between A and B can be between 0 degrees and 10 degrees. For example, when A is perpendicular to B, it means that A is perpendicular to B or approximately perpendicular to B, and the included angle between A and B can be between 80 degrees and 100 degrees. Please refer to Figure 1 , Figure 1It is a schematic structural diagram of an embodiment of the electronic device 1 provided by this application. The electronic device 1 can be a mobile phone, a watch, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, a VR helmet, mixed reality (MR) glasses, an MR helmet, or a device that can be used to transmit millimeter-wave antennas. Figure 1 The electronic device 1 in the illustrated embodiment is described by taking a mobile phone as an example.

[0112] Please refer to Figure 2 and in combination with Figure 1 as shown, Figure 2 is Figure 1 a partial exploded view of the electronic device 1 shown. The electronic device 1 includes a circuit board assembly 100, a housing 200, and a screen 300. It can be understood that Figure 1 and Figure 2 only schematically show some components included in the electronic device 1, and the actual shape, actual size, actual position, and actual structure of these components are not limited by Figure 1 , Figure 2 and the following respective drawings. It should be noted that since the circuit board assembly 100 is located inside the electronic device 1, Figure 1 the circuit board assembly 100 is schematically represented by a dashed line.

[0113] Among them, the screen 300 can be used to display images and the like. The screen 300 can be a flat screen or a curved screen. The screen 300 can include a transparent cover plate 301 and a display screen 302. The transparent cover plate 301 is laminated on the display screen 302. The transparent cover plate 301 can be disposed closely to the display screen 302 and can be used to transmit light, protect, and prevent dust for the display screen 302. The material of the transparent cover plate 301 can be glass. The display screen 302 can be used to display images and the like. The display screen 302 can adopt a liquid crystal display (LCD), an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode (AMOLED) display screen, a quantum dot light-emitting diode (QLED) display screen, etc.

[0114] Exemplarily, the housing 200 includes a frame 201 and a rear cover 202. The rear cover 202 can be fixed to one side of the frame 201 by an adhesive. In other embodiments, the rear cover 202 can also be an integrally formed structure with the frame 201.

[0115] In addition, the screen 300 can be fixed to the other side of the frame 201 by an adhesive. The screen 300 and the rear cover 202 are disposed opposite to each other, and the transparent cover plate 301 of the screen 300 is located on the side of the display screen 302 of the screen 300 away from the rear cover 202. At this time, the rear cover 202, the frame 201, and the screen 300 can jointly enclose the interior of the electronic device 1. The interior of the electronic device 1 can be used to arrange devices such as a battery, a speaker, a receiver, a camera, and a microphone.

[0116] Exemplarily, the housing 200 can further include a middle plate (not shown in the figure). The middle plate is located between the screen 300 and the rear cover 202. The middle plate can be at least partially spaced from the frame 201, or at least partially connected to the inner side of the frame 201, or partially spaced from the frame and partially connected to the inner side of the frame. For example, the inner side of the frame includes an extension portion. The middle plate is connected through the extension portion, or the frame and the middle plate are an integral structure.

[0117] In addition, the circuit board assembly 100 is fixed to the interior of the electronic device 1. For example, the circuit board assembly 100 can be fixed inside the electronic device 1 by fasteners (such as screws, bolts, or pins). At this time, the housing 200 and the screen 300 can protect the circuit board assembly 100.

[0118] Please refer to Figure 3 , Figure 3 is Figure 2 a partially exploded schematic view of the circuit board assembly 100 shown. The circuit board assembly 100 includes an antenna structure 10, a radio frequency circuit 20, and a printed circuit board (PCB) 30.

[0119] Among them, the circuit board 30 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board. In addition, the circuit board 30 can use an FR-4 dielectric board, a Rogers dielectric board, or a hybrid dielectric board of FR-4 and Rogers, and so on. Here, FR-4 is a code for a flame-resistant material grade, and the Rogers dielectric board is a high-frequency board. It can be understood that the circuit board 30 can be composed of a single board. For example, the circuit board 30 can be a main board, or a sub-board, or any flexible circuit board connecting the main board and the sub-board. Exemplarily, both the main board and the sub-board are rigid circuit boards. The circuit board 30 can also be composed of multiple boards. For example, the circuit board 30 can include a main board, a sub-board, and a daughter board. The daughter board is electrically connected between the main board and the sub-board. Exemplarily, both the main board and the sub-board are rigid circuit boards, and the daughter board is a flexible circuit board.

[0120] Among them, both the antenna structure 10 and the radio frequency circuit 20 are disposed on the circuit board 30. The antenna structure 10 can be electrically connected to the radio frequency circuit 20 through the circuit board 30. At this time, the radio frequency circuit 20 can transmit a radio frequency signal to the antenna structure 10 through the circuit board 30, so that the antenna structure 10 radiates electromagnetic waves according to the radio frequency signal. In addition, when the antenna structure 10 receives electromagnetic waves and converts the electromagnetic waves into a radio frequency signal, the radio frequency circuit 20 can also receive the radio frequency signal converted by the antenna structure 10 through the circuit board 30.

[0121] Exemplarily, the antenna structure 10 can be integrated within the circuit board 30. At this time, the antenna structure 10 and the circuit board 30 are an integrally formed structure.

[0122] Among them, the radio frequency circuit 20 includes a radio frequency transceiver chip 21 and a matching circuit 22. The matching circuit 22 can include electronic devices such as an antenna switch, a capacitor, an inductor, or a resistor. The matching circuit 22 is electrically connected between the radio frequency transceiver chip 21 and the antenna structure 10. The radio frequency transceiver chip 21 is used to transmit a radio frequency signal to the antenna structure 10, so that the antenna structure 10 radiates electromagnetic waves according to the radio frequency signal. In addition, when the antenna structure 10 receives electromagnetic waves and converts the electromagnetic waves into a radio frequency signal, the radio frequency transceiver chip 21 can also receive the radio frequency signal converted by the antenna structure 10.

[0123] In addition, the matching circuit 22 can be used to perform signal processing on the radio frequency signal. For example, signal amplification or filtering, etc.

[0124] In one embodiment, the antenna structure 10 and the matching circuit 22 can be integrated within the radio frequency transceiver chip 21. At this time, the antenna structure 10, the matching circuit 22, and the radio frequency transceiver chip 21 form an integral structure. In this way, the occupied space of the matching circuit 22 and the antenna structure 10 can be saved inside the electronic device 1, thereby improving the utilization rate of the internal space of the electronic device 1. Moreover, the transmission loss of the antenna can be reduced and the antenna efficiency can be improved.

[0125] In one embodiment, the circuit board assembly 100 may further include a functional chip. For example, the functional chip is a central processing unit (CPU), a graphics processing unit (GPU), a universal flash storage (UFS), or a battery management integrated circuit, etc.

[0126] Exemplarily, the radio frequency circuit 20 and the antenna structure 10 can be integrated within the functional chip. At this time, the radio frequency circuit 20, the antenna structure 10, and the functional chip form an integral structure. For example, the radio frequency circuit 20 and the antenna structure 10 can be integrated on the CPU. In this way, the occupied space of the radio frequency circuit 20 and the antenna structure 10 can be saved inside the electronic device 1, thereby improving the utilization rate of the internal space of the electronic device 1.

[0127] It can be understood that the above gives the implementation manner in which the antenna structure 10 is disposed on the circuit board 30. In other implementation manners, the antenna structure 10 can also be disposed on other substrates. For example, a low temperature co-fired ceramic (LTCC) substrate.

[0128] Please refer to Figure 3 again, and in combination with Figure 1 and Figure 2 as shown, there are various setting manners for the radiation direction of the antenna structure 10.

[0129] The first optional manner: The antenna structure 10 can radiate or receive electromagnetic waves to / from the outside of the electronic device 1 through the rear cover 202.

[0130] Exemplarily, by setting the material of the rear cover 202 as an insulating material (such as glass, ceramic, or plastic material, etc.), the antenna structure 10 can directly radiate or receive electromagnetic waves to / from the outside of the electronic device 1 through the rear cover 202.

[0131] Exemplarily, by setting the rear cover 202 as a metal material (e.g., aluminum alloy material, etc.) and opening a through-hole (not shown in the figure) in the rear cover 202, the antenna structure 10 can radiate or receive electromagnetic waves to the outside of the electronic device 1 through the through-hole of the rear cover 202. Additionally, by filling the through-hole with an insulating material (e.g., polymer, glass, ceramic, or a combination of these materials, etc.), while not affecting the transmission of electromagnetic waves, the integrity of the rear cover 202 and the surface flatness of the rear cover 201 can be ensured.

[0132] The second optional way: The antenna structure 10 can radiate or receive electromagnetic waves to the outside of the electronic device 1 through the frame 201.

[0133] Exemplarily, by setting the material of the frame 201 as an insulating material (e.g., glass, ceramic, or plastic material, etc.), the antenna structure 10 can directly radiate or receive electromagnetic waves to the outside of the electronic device 1 through the frame 201.

[0134] Exemplarily, by setting the frame 201 as a metal material (e.g., aluminum alloy material, etc.) and opening a through-hole (not shown in the figure) in the frame 201, the antenna structure 10 can radiate or receive electromagnetic waves to the outside of the electronic device 1 through the through-hole of the frame 201. Additionally, by filling the through-hole with an insulating material (e.g., polymer, glass, ceramic, or a combination of these materials, etc.), while not affecting the transmission of electromagnetic waves, the integrity of the frame 201 and the surface flatness of the frame 201 can be ensured.

[0135] The third optional way: The antenna structure 10 can radiate or receive electromagnetic waves to the outside of the electronic device 1 through the screen 300.

[0136] Exemplarily, by setting the antenna structure 10 between the transparent cover plate 301 of the screen 300 and the display screen 302 of the screen 300, the antenna structure 10 can directly radiate or receive electromagnetic waves to the outside of the electronic device 1 through the transparent cover plate 301.

[0137] Exemplarily, by directly embedding the antenna structure 10 inside the transparent cover plate 301 of the screen 300, electromagnetic waves can be radiated or received to the outside of the electronic device 1 through the transparent cover plate 301.

[0138] Exemplarily, the screen 300 can be a notch screen or a water-drop screen, etc. The antenna structure 10 can radiate or receive electromagnetic waves to the outside of the electronic device 1 through the "water-drop" position or "notch" position of the screen 300, etc. For example, the "water-drop" position or "notch" position of the screen 300 is an opening structure. At this time, the antenna structure 10 can radiate or receive electromagnetic waves to the outside of the electronic device 1 through the opening position of the screen 300.

[0139] In other embodiments, any two of the first to third alternative ways can be combined with each other, or the three embodiments can be combined with each other. In this way, the antenna structure 10 is not limited to radiating from one part. For example, when the antenna structure 10 is close to the back cover 202 and the frame 201, the antenna structure 10 can radiate or receive electromagnetic waves to the outside of the electronic device 1 through the insulating parts of the back cover 202 and the frame 201.

[0140] Exemplarily, the antenna structure 10 can support frequency bands n257, n258, n259, n260, and n261. For example, the antenna structure 10 can cover a frequency range from 24.25 GHz to 43.5 GHz. Define f0 as the center frequency of the antenna structure 10. In this embodiment, f0 = (24.25 + 43.5) / 2 GHz = 33.875 GHz. Define λ0 as the dielectric wavelength of the center frequency. The antenna structure 10 can be applied to the millimeter wave frequency band. The antenna structure 10 can meet the user's 5G (5th Generation) mobile communication requirements and be applied in scenarios such as calls and video calls. Alternatively, an NFC (Near Field Communication) chip can be set in the electronic device 1 to meet the user's near field communication requirements and be applied in scenarios such as mobile payment, bus payment, and identity recognition. In other embodiments, the antenna structure 10 can also cover other frequency bands. At this time, the center frequency f0 of the antenna structure 10 will also change accordingly.

[0141] This embodiment will specifically introduce several setting methods of the antenna structure 10 in combination with relevant drawings.

[0142] Please refer to Figure 4 , Figure 4 which Figure 3 is a partial exploded view of the antenna structure 10 shown. The antenna structure 10 includes a dielectric layer 11, a ground layer 12, a feeding unit 13, an antenna unit 14, and a plurality of matching via groups 15.

[0143] Among them, the dielectric layer 11 adopts an LCP (Liquid Crystal Polymer) dielectric layer 11, or an FR-4 dielectric layer 11, or a Rogers dielectric layer 11, or a hybrid dielectric plate of FR-4 and Rogers, etc. It can be understood that when the material of the dielectric layer is LCP, since the loss tangent value of LCP remains relatively small at high frequencies, this can make the antenna structure have a small transmission loss, thereby improving the antenna radiation efficiency and obtaining a higher antenna gain.

[0144] Among them, the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15 can all be disposed on the dielectric layer 11. It can be understood that the dielectric layer 11 can be used to support the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15, so that the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15 form an integral structure.

[0145] In one embodiment, the dielectric layer 11 can wrap or semi-wrap the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15. When the dielectric layer 11 semi-wraps the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15, at least a part of the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15 can be exposed relative to the dielectric layer 11.

[0146] In one embodiment, the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15 can be disposed on one surface of the dielectric layer 11.

[0147] In one embodiment, the structure formed by the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15 is a multi-layer structure. During the formation process of the antenna structure 10, this multi-layer structure needs to be formed layer by layer in sequence. During the process of forming each layer of this multi-layer structure, a sub-layer of the dielectric layer can be correspondingly formed in this embodiment. Thus, after the antenna structure 10 is formed, the dielectric layer 11 can just make the grounding layer 12, the feeding unit 13, the antenna unit 14, and the multiple matching via groups 15 all be embedded in the dielectric layer 11. Therefore, although Figure 4 the illustrated dielectric layer 11 is an integral structure, the dielectric layer 11 can also be formed by stacking multiple sub-layers.

[0148] In other embodiments, the antenna structure 10 may not include the dielectric layer 11. At this time, the grounding layer 12, the feeding unit 13, and the antenna unit 14 can be fixed by means of a bracket or the like.

[0149] In other embodiments, the antenna structure 10 may not include the multiple matching via groups 15.

[0150] Please refer to again Figure 4 , the grounding layer 12 is used to provide grounding for the antenna unit 14. Among them, the material of the grounding layer 12 can be a metal material. For example, copper, gold, silver, etc. The shape of the grounding layer 12 can be square, rectangular, circular, etc. Specifically, the shape of the grounding layer 12 is not limited. In this embodiment, the shape of the grounding layer 12 is taken as an example of a square for description.

[0151] In addition, the grounding layer 12 is provided with first vias 121 and second vias 122 which are spaced apart. Both the first vias 121 and the second vias 122 penetrate through two opposite surfaces of the grounding layer 12 (for example, the top surface and the bottom surface of the grounding layer 12). The feeding unit 13 can be electrically connected to the radio frequency circuit 20 outside the antenna structure 10 through the first vias 121 and the second vias 122.

[0152] Please refer to again Figure 4 , the number of the antenna units 14 can be one or more. In this embodiment, multiple antenna units 14 are taken as an example for description. The multiple antenna units 14 are arranged in m rows and n columns, where both m and n are positive integers. A gap is formed between two adjacent antenna units 14. The multiple antenna units 14 can form a "1×1" array, a "2×1" array, a "1×2" array, a "2×2" array, a "3×3" array, etc. In this embodiment, the multiple antenna units 14 are taken as an example of a "2×2" array for description. At this time, the number of the antenna units 14 is four, specifically including a first antenna unit 14a, a second antenna unit 14b, a third antenna unit 14c, and a fourth antenna unit 14d.

[0153] Please refer to Figure 5 , Figure 5 is Figure 4 the exploded view of the first antenna unit 14a and the second antenna unit 14b shown in. The first antenna unit 14a includes a first metal layer 141, a second metal layer 142, a first metal post 143, a second metal post 144, a third metal post 145, a first metal connecting piece 146a, and a second metal connecting piece 146b. Among them, the first metal post 143 constitutes the first conductive member of this embodiment. The second metal post 144, the third metal post 145, the first metal connecting piece 146a, and the second metal connecting piece 146b constitute the second conductive member of this embodiment.

[0154] It should be noted that, in order to avoid the relevant descriptions in the following text from being too complicated and lengthy, the relevant descriptions of the first metal layer 141 of the first antenna unit 14a, the second metal layer 142 of the first antenna unit 14a, the first metal post 143 of the first antenna unit 14a, the second metal post 144 of the first antenna unit 14a, the third metal post 145 of the first antenna unit 14a, the first metal connecting piece 146a of the first antenna unit 14a, and the second metal connecting piece 146b of the first antenna unit 14a are all simplified to descriptions such as the first metal layer 141, the second metal layer 142, the first metal post 143, the second metal post 144, the third metal post 145, the first metal connecting piece 146a, and the second metal connecting piece 146b. In addition, the names with labels such as the first metal layer 141, the second metal layer 142, the first metal post 143, the second metal post 144, the third metal post 145, the first metal connecting piece 146a, and the second metal connecting piece 146b of the first antenna unit 14a are used to distinguish from the names of the first metal layer 161 of the second antenna unit 14b, the second metal layer 162 of the second antenna unit 14b, the first metal post 163 of the second antenna unit 14b, the second metal post 164 of the second antenna unit 14b, the third metal post 165 of the second antenna unit 14b, the first metal connecting piece 166a of the second antenna unit 14b, and the second metal connecting piece 166b of the second antenna unit 14b in the following text.

[0155] Please refer to Figure 6 , Figure 6 which Figure 3 is a partial structural schematic diagram of the antenna structure 10 shown in the figure. The third metal post 145 is connected to the ground layer 12. Exemplarily, the number of the third metal posts 145 is three. The three third metal posts 145 may be arranged in an "L" shape, or may also be arranged in an arc shape. The three third metal posts 145 are semi-surrounded by the first through hole 121 of the ground layer 12. In other embodiments, the number and arrangement shape of the third metal posts 145 are not specifically limited.

[0156] It should be noted that the structure of the third metal post 145 may be to form a layer of metal material on the pore wall of the via hole. At this time, the third metal post 145 is generally in a "pipe" structure. The structure of the third metal post 145 may also be to fill the via hole with metal material. At this time, the third metal post 145 may be in a "columnar" structure. In other embodiments, the third metal post 145 may also have other structures. Specifically, this embodiment does not make a limitation. It can be understood that the structures of the metal posts mentioned below (such as the first metal post 143, the second metal post 144, etc.) can all refer to the structure of the third metal post 145 in this embodiment. Specifically, it will not be elaborated below.

[0157] Please refer to Figure 7 , Figure 7 which Figure 5 Schematic diagram of the structure of the first metal connecting piece 146a and the second metal connecting piece 146b of the first antenna unit 14a shown. In this embodiment, the number of the first metal connecting pieces 146a is one. In other embodiments, the number of the first metal connecting pieces 146a is not limited.

[0158] In addition, the first metal connecting piece 146a includes a first connecting portion 1461 and a second connecting portion 1462. The first connecting portion 1461 connects the second connecting portion 1462 and forms a bent shape. Exemplarily, the first metal connecting piece 146a is in an "L" shape or an arc shape, etc. It should be noted that, in order to clearly introduce the structure of the first metal connecting piece 146a, Figure 7 the first connecting portion 1461 and the second connecting portion 1462 are schematically distinguished by a dashed line.

[0159] Exemplarily, the width a1 of the first connecting portion 1461 is equal to the width a2 of the second connecting portion 1462. In addition, the length c2 of the second connecting portion 1462 is equal to the sum of the length c1 of the first connecting portion 1461 and the width a2 of the second connecting portion 1462. In other embodiments, the dimensions of each part of the first metal connecting piece 146a are not specifically limited.

[0160] Please refer to again Figure 7 , the number of the second metal connecting pieces 146b can be multiple. Exemplarily, the number of the second metal connecting pieces 146b is four. In other embodiments, the number of the second metal connecting pieces 146b is not limited.

[0161] In addition, taking one of the second metal connecting pieces 146b as an example for description. The second metal connecting piece 146b includes a third connecting portion 1463 and a fourth connecting portion 1464. The third connecting portion 1463 connects the fourth connecting portion 1464 and forms a bent shape. Exemplarily, the second metal connecting piece 146b can be in an "L" shape or an arc shape, etc. It should be noted that, Figure 7 the third connecting portion 1463 and the fourth connecting portion 1464 are schematically distinguished by a dashed line.

[0162] Exemplarily, the width a3 of the third connection portion 1463 is equal to the width a4 of the fourth connection portion 1464. The width a3 of the third connection portion is less than the width a1 of the first connection portion 1461. The width a4 of the fourth connection portion 1464 is less than the width a2 of the second connection portion 1462. Additionally, the length c4 of the fourth connection portion 1464 is equal to the sum of the length c3 of the third connection portion 1463 and the width a4 of the fourth connection portion 1464. The length c4 of the fourth connection portion 1464 is equal to the length c2 of the second connection portion 1462. In other embodiments, the dimensions of each part of the second metal connection piece 146b are not specifically limited.

[0163] Please refer to Figure 8 , Figure 8 is Figure 3 a partial schematic structural view of the antenna structure 10 shown in the figure. The ground layer 12 is spaced from and opposite to the first metal connection piece 146a, and the first metal connection piece 146a is connected to the end of the third metal column 145 away from the ground layer 12. At this time, the third metal column 145 is connected between the ground layer 12 and the first metal connection piece 146a, and the third metal column 145, the ground layer 12, and the first metal connection piece 146a are electrically connected to each other.

[0164] Exemplarily, one third metal column 145 is connected to the first connection portion 1461 of the first metal connection piece 146a. Two third metal columns 145 are connected to the second connection portion 1462 of the first metal connection piece 146a. In addition, the third metal column 145 can penetrate the first metal connection piece 146a.

[0165] Please refer to Fig. 9 , and in combination with Figure 8 shown in the figure, Fig. 9 is Figure 3 a partial schematic structural view of the antenna structure 10 shown in the figure. A plurality of second metal connection pieces 146b are located on the side of the first metal connection piece 146a away from the third metal column 145. The plurality of second metal connection pieces 146b are spaced apart along the thickness direction of the antenna structure 10. The third connection portions 1463 of each second metal connection piece 146b are spaced apart from and opposite to each other, and are spaced apart from and opposite to the first connection portion 1461 of the first metal connection piece 146a. The fourth connection portions 1464 of each second metal connection piece 146b are spaced apart from and opposite to each other, and are spaced apart from and opposite to the second connection portion 1462 of the first metal connection piece 146a.

[0166] A plurality of second metal pillars 144 are arranged at intervals, and one end of each second metal pillar 144 is also connected to the first metal connection piece 146a. Among them, the projections of the plurality of second metal pillars 144 on the first metal connection piece 146a and the projections of the plurality of third metal pillars 145 on the first metal connection piece 146a at least partially overlap. In addition, the plurality of second metal pillars 144 are also connected to a plurality of second metal connection pieces 146b. The second metal connection piece 146b, the second metal pillar 144, the first metal connection piece 146a, the third metal pillar 145, and the ground layer 12 are electrically connected to each other.

[0167] Exemplarily, the plurality of second metal pillars 14 may be arranged in an "L" shape, or may also be arranged in an arc shape.

[0168] Exemplarily, each second metal pillar 144 can penetrate each second metal connection piece 146b. At this time, the connection between the second metal pillar 144 and the second metal connection piece 146b is more stable. In other embodiments, each second metal pillar 144 may not pass through each second metal connection piece 146b. At this time, by arranging the second metal pillar 144 between every two second metal connection pieces 146b, and arranging the second metal pillar 144 between the second metal connection piece 146b and the first metal connection piece 146a, the second metal connection piece 146b, the second metal pillar 144, and the first metal connection piece 146a are electrically connected to each other.

[0169] In this embodiment, the diameter of the second metal pillar 144 is smaller than the diameter of the third metal pillar 145. It can be understood that when the diameter of the second metal pillar 144 is small, the thickness of the dielectric layer wrapped around the second metal pillar 144 can be made small. When the diameter of the third metal pillar 145 is large, the thickness of the dielectric layer wrapped around the third metal pillar 145 can be made large. In this way, in the forming process of the antenna structure 10, two dielectric plates with different thicknesses (one dielectric plate is provided with the second metal pillar 144, and the other dielectric plate is provided with the third metal pillar 145) can be stacked into a whole by bonding or welding.

[0170] In addition, when the diameter of the second metal pillar 144 is smaller than the diameter of the third metal pillar 145, by setting the width a3 of the third connection part to be smaller than the width a1 of the first connection part 1461, and the width a4 of the fourth connection part 1464 to be smaller than the width a2 of the second connection part 1462, so that the first connection part 1461 and the second connection part 1462 have enough space to connect to the third metal pillar 145, and to ensure better connection stability.

[0171] In other embodiments, the first antenna unit 14a may also not include the third metal post 145 and the first metal connection piece 146a. At this time, the second metal post 144 may be directly connected to the ground layer 12.

[0172] In other embodiments, the first antenna unit 14a may also not include the second metal connection piece 146b.

[0173] Please refer to Fig.10 , Fig.10 is Figure 5 a schematic structural view of the second metal sheet 142 of the first antenna unit 14a shown. The second metal layer 142 includes a top surface 1425 and a bottom surface 1426 which are oppositely arranged, and a side surface 1427 connected between the top surface 1425 and the bottom surface 1426. Since the thickness of the first metal layer 141 in this embodiment is smaller than the length and width of the first metal layer 141, the distance between the top surface 1425 and the bottom surface 1426 of the first metal layer 141 is smaller, and the structures of the top surface 1425 and the bottom surface 1426 of the first metal layer 141 are substantially the same. In this way, this embodiment can be described by taking the top surface 1425 of the first metal layer 141 as an example. In addition, since the thickness of the first metal layer 141 is small, the structure of the side surface 1427 of the first metal layer 141 has little influence on the structure of the first metal layer 141. Therefore, by describing the structure of the top surface 1425 of the first metal layer 141, the three-dimensional structure of the first metal layer 141 can also be roughly reflected.

[0174] Among them, the shape of the second metal layer 142 may be square, rectangular, circular, etc. This embodiment is described by taking the shape of the second metal layer 142 as a square as an example. Specifically, the second metal layer 142 includes a first side 1421 and a second side 1422 which are oppositely arranged, and a third side 1423 and a fourth side 1424 which are oppositely arranged. The third side 1423 and the fourth side 1424 are connected between the first side 1421 and the second side 1422. Since the second metal layer 142 is square, the lengths of the first side 1421, the second side 1422, the third side 1423, and the fourth side 1424 of the second metal layer 142 are all equal. Exemplarily, the side length b1 of the second metal layer 142 is equal to the length c4 of the second connection portion 1464 of the second metal connection piece 146b (please refer to Figure 7 ).

[0175] In this embodiment, the second metal layer 142 includes a first region 142a and a second region 142b which are spaced apart. Fig.10The first region 142a and the second region 142b are schematically distinguished by a dashed line. Exemplarily, the shapes of the first region 142a and the second region 142b may be in an "L" shape. The first region 142a is disposed adjacent to the first side 1421 and the third side 1423. The second region 142b is disposed adjacent to the second side 1422 and the fourth side 1424. In other embodiments, the shapes of the first region 142a and the second region 142b are not specifically limited.

[0176] Please refer to Fig.11 , and in combination with Fig. 9 and Fig.10 , Fig.11 is Figure 3 a partial structural schematic diagram of the antenna structure 10 shown. The second metal layer 142 is spaced from and oppositely disposed to the second metal connecting piece 146b. One end of each second metal post 144 is connected to the second region 142b of the second metal layer 142. At this time, each second metal post 14 is connected between the second region 142b of the second metal layer 142 and the first metal connecting piece 146a. Some of the second metal posts 144 are disposed adjacent to the second side 1422 of the second metal layer 142, and some of the second metal posts 144 are disposed adjacent to the fourth side 1424 of the second metal layer 142.

[0177] In the present embodiment, the second metal layer 142, the second metal posts 144, the third metal posts 145, the first metal connecting piece 146a, the second metal connecting piece 146b, and the ground layer 12 enclose a first space S1. It can be understood that the first space S1 can be used to dispose other components of the antenna structure 10. In this way, on the one hand, the space utilization rate of the antenna structure 10 is relatively high. On the other hand, the antenna structure 10 can be compactly disposed, which is beneficial to the miniaturization of the antenna structure 10.

[0178] Exemplarily, the first through hole 121 of the ground layer 12 communicates with the first space S1.

[0179] In addition, one end of the first metal post 143 is connected to the first region 142a of the second metal layer 142. Exemplarily, the number of the first metal posts 143 is three. The three first metal posts 143 may be arranged in an "L" shape, or may also be arranged in an arc shape.

[0180] It can be understood that, since the second metal column 144 is connected to the second area 142b of the second metal layer 142, and the first metal column 143 is connected to the first area 142a of the second metal layer 142, at this time, the first metal column 143 and the second metal column 144 are divided into two areas and spaced apart on the second metal layer 142, that is, the projection of the first metal column 143 on the second metal layer 142 is staggered with the projection of the second metal column 144 on the second metal layer 142. In addition, the first metal column 143, the second metal layer 142, the second metal column 144, the third metal column 145, the first metal connecting sheet 146a, the second metal connecting sheet 146b and the ground layer 12 are electrically connected to each other.

[0181] See also Fig.12 , Fig.12 yes Figure 5 Schematic diagram of the structure of the first metal sheet 141 of the first antenna unit 14a shown. The shape of the first metal layer 141 can be square, rectangular, circular, etc. This embodiment is described by taking the shape of the first metal layer 141 as a square. Specifically, the first metal layer 141 includes a first side 1411 and a second side 1412 arranged opposite to each other, and a third side 1413 and a fourth side 1414 arranged opposite to each other. The third side 1413 and the fourth side 1414 are connected between the first side 1411 and the second side 1412. Since the first metal layer 141 is a square, the side lengths of the first side 1411, the second side 1412, the third side 1413 and the fourth side 1414 of the first metal layer 141 are all equal. Exemplarily, the side length of the first metal layer 141 is in the range of 0.25λ0 to 0.35λ0. In this embodiment, the area of ​​the first metal layer 141 is greater than the area of ​​the second metal layer 142.

[0182] In addition, the first metal layer 141 has a diagonal line M1. One end of the diagonal line M1 is located at the connection between the first side 1411 and the third side 1413, and the other end is located at the connection between the second side 1412 and the fourth side 1414. It should be noted that the diagonal line M1 is not an actual structure on the first metal layer 141. The diagonal line M1 is a virtual line. Fig.12 The diagonal line M1 is indicated by a dotted line.

[0183] See also Fig.13 , and combined with Fig.11 and Fig.12 As shown, Fig.13 yes Figure 3Partial structural schematic diagram of the antenna structure 10 shown. The first metal layer 141 and the second metal layer 142 are spaced apart and oppositely arranged. The first metal layer 141 is fixed to the end of the first metal column 143. The first metal column 143 is connected between the first metal layer 141 and the first region 142a of the second metal layer 142. The first metal layer 141 is electrically connected to the first metal column 143. In addition, the projection of the second metal layer 142 on the plane where the first metal layer 141 is located is within the first metal layer 141. The projection of the first metal layer 141 on the ground layer 12 is within the ground layer 12.

[0184] Exemplarily, the first side 1411 of the first metal layer 141 is oppositely arranged to the first side 1421 of the second metal layer 142, that is, the projection of the first side 1421 of the second metal layer 142 on the first metal layer 141 coincides with the first side 1411 of the first metal layer 141. The third side 1413 of the first metal layer 141 is oppositely arranged to the third side 1423 of the second metal layer 142, that is, the projection of the third side 1423 of the second metal layer 142 on the first metal layer 141 coincides with the third side 1413 of the first metal layer 141.

[0185] Please refer to Fig.14 , Fig.14 is Fig.13 Partial cross-sectional schematic diagram of the antenna structure 10 shown at line A-A. By separating the first metal column 143 and the second metal column 144 into two regions spaced apart on the second metal layer 142, in this way, when the first antenna unit 14a is in the working state, the current path ( Fig.14 simply indicated by thick lines) includes the ground layer 12, the third metal column 145, the first metal connection piece 146a, the second metal column 144, the second region 142b of the second metal layer 142 (please refer to Fig.11 ), the first region 142a of the second metal layer 142 (please refer to Fig.11 ), the first metal column 143, and the first metal layer 141. Since the current can be transmitted between the first region 142a and the second region 142b of the second metal layer 142, the current path is bent once. Compared with the antenna structure with the same current path and when the current path of the antenna structure is linear, the cross-sectional height H of the antenna structure 10 in this embodiment is lower, and the antenna structure 10 is conducive to realizing a thin design.

[0186] Exemplarily, when the length of the current path (i.e., the electrical length is equal to the sum of the profile height H of the antenna structure 10 and the side length of the second metal layer 142) is in the range of 0.25λ0 to 0.32λ0, the profile height H of the antenna structure 10 can be in the range of 0.15λ0 to 0.21λ0. In this way, compared with the profile heights of other antenna structures 10, the profile height H of the antenna structure 10 in this embodiment is reduced to a greater extent.

[0187] Exemplarily, the first antenna unit 14a can be a symmetric structure, or a partially symmetric structure, or the same or similar structures or different structures. In this embodiment, the first antenna unit 14a is a symmetric structure. Specifically, please refer back to Fig.13 As shown, the first antenna unit 14a is symmetric about the symmetry plane of the first antenna unit 14a. Among them, the symmetry plane of the first antenna unit 14a is perpendicular to the plane where the first metal layer 141 is located, and the diagonal line M1 of the first metal layer 141 is located in the symmetry plane of the first antenna unit 14a.

[0188] Please refer back to Figure 5 , the second antenna unit 14b includes a first metal layer 161, a second metal layer 162, a first metal column 163, a second metal column 164, a third metal column 165, a first metal connecting piece 166a, and a second metal connecting piece 166b. Among them, the structural settings of the first metal layer 161, the second metal layer 162, the first metal column 163, the second metal column 164, the third metal column 165, the first metal connecting piece 166a, and the second metal connecting piece 166b can refer to the structural settings of the first metal layer 141, the second metal layer 142, the first metal column 143, the second metal column 144, the third metal column 145, the first metal connecting piece 146a, and the second metal connecting piece 146b of the first antenna unit 14a. Specifically, it will not be elaborated here.

[0189] In other embodiments, the second antenna unit 14b may also not include the third metal column 165, the first metal connecting piece 166a, and the second metal connecting piece 166b.

[0190] Please refer back to Figure 6 , the third metal column 165 is connected to the ground layer 12. The third metal column 165 of the second antenna unit 14b is located on one side of the third metal column 145 of the first antenna unit 14a. Exemplarily, the number of the third metal columns 165 is three. The three third metal columns 165 are arranged in an "L" shape, or can also be in an arc shape. In other embodiments, the number of the third metal columns 165 is not specifically limited.

[0191] Please refer back to Figure 8, the first metal connecting piece 166a is connected to the end of the third metal column 165 away from the grounding layer 12. At this time, the third metal column 165 is connected between the first metal connecting piece 166a and the grounding layer 12, and the third metal column 165, the first metal connecting piece 166a and the grounding layer 12 are electrically connected to each other.

[0192] In addition, the first connecting portion 1661 of the first metal connecting piece 166a of the second antenna unit 14b is disposed opposite to the first connecting portion 1461 of the first metal connecting piece 146a of the first antenna unit 14a. The second connecting portion 1662 of the first metal connecting piece 166a of the second antenna unit 14b is disposed opposite to the second connecting portion 1642 of the first metal connecting piece 146a of the first antenna unit 14a.

[0193] Exemplarily, one third metal column 165 is connected to the first connecting portion 1661 of the first metal connecting piece 166a. Two third metal columns 165 are connected to the second connecting portion 1662 of the first metal connecting piece 166a.

[0194] Please refer to Fig. 9 , and in combination with Figure 8 As shown, a plurality of second metal connecting pieces 166b are located on a side of the first metal connecting piece 166a away from the third metal column 165. The plurality of second metal connecting pieces 166b are spaced apart along the thickness direction of the antenna structure 10. The third connecting portions 1663 of each second metal connecting piece 166b are spaced apart and disposed opposite to each other, and are spaced apart and disposed opposite to the first connecting portion 1661 of the first metal connecting piece 166a. The fourth connecting portions 1664 of each second metal connecting piece 166b are spaced apart and disposed opposite to each other, and are spaced apart and disposed opposite to the second connecting portion 1662 of the first metal connecting piece 166a.

[0195] In addition, a plurality of second metal columns 164 are spaced apart, and one end of each second metal column 164 is further connected to the first metal connecting piece 166a. Among them, the projections of the plurality of second metal columns 164 on the first metal connecting piece 166a at least partially overlap with the projections of the plurality of third metal columns 165 on the first metal connecting piece 166a. The plurality of second metal columns 164 are further connected to the plurality of second metal connecting pieces 166b. At this time, the second metal connecting piece 166b, the second metal column 164, the first metal connecting piece 166a, the third metal column 165, and the grounding layer 12 are electrically connected to each other.

[0196] Exemplarily, each second metal post 164 can penetrate through each second metal connecting piece 166b. At this time, the connection between the second metal post 164 and the second metal connecting piece 166b is more stable. In other embodiments, each second metal post 164 may not penetrate through each second metal connecting piece 166b. At this time, by arranging the second metal posts 164 between every two second metal connecting pieces 166b and arranging the second metal posts 164 between the second metal connecting piece 166b and the first metal connecting piece 166a, the second metal connecting piece 166b, the second metal post 164, and the first metal connecting piece 166a are electrically connected to each other.

[0197] In other embodiments, when the second antenna unit 14b does not include the third metal post 165 and the first metal connecting piece 166a, the second metal post 164 can be directly connected to the ground layer 12.

[0198] Please refer to again Fig.11 and in combination with Fig. 9 and Fig.10 The second metal layer 162 is fixed to the ends of the plurality of second metal posts 164. The first side 1621 of the second metal layer 162 of the second antenna unit 14b is spaced apart from the first side 1421 of the second metal layer 142 of the first antenna unit 14a.

[0199] One end of each second metal post 164 is connected to the second region 162b of the second metal layer 162. At this time, some second metal posts 164 are arranged close to the second side 1622 of the second metal layer 162. Some second metal posts 144 are arranged close to the fourth side 1624 of the second metal layer 162.

[0200] It can be understood that the second metal layer 162, the second metal post 164, the third metal post 165, the first metal connecting piece 166a, the second metal connecting piece 166b, and the ground layer 12 enclose a second space S2. The second space S2 communicates with the first space S1. It can be understood that the second space S2 can be used to arrange other components of the antenna structure 10. In this way, on the one hand, the space utilization rate of the antenna structure 10 is relatively high. On the other hand, the antenna structure 10 can be arranged compactly, which is beneficial to the miniaturization of the antenna structure 10.

[0201] In addition, one end of each first metal post 163 is connected to the first region 162a of the second metal layer 162. Exemplarily, the number of the first metal posts 163 is three. The three first metal posts 163 are arranged in an "L" shape.

[0202] It can be understood that, since the second metal column 164 is connected to the second area 162b of the second metal layer 162, and the first metal column 163 is connected to the first area 162a of the second metal layer 162, at this time, the first metal column 163 and the second metal column 164 are divided into two areas on the second metal layer 162 and arranged at intervals, that is, the projection of the first metal column 163 on the second metal layer 162 is staggered with the projection of the second metal column 164 on the second metal layer 162. In addition, the first metal column 163, the second metal layer 162, the second metal column 164, the third metal column 165, the first metal connecting sheet 166a, the second metal connecting sheet 166b and the ground layer 12 are electrically connected to each other.

[0203] See also Fig.13 , and combined with Fig.11 As shown, the first metal layer 161 and the second metal layer 162 are spaced apart and arranged opposite to each other. The first metal layer 161 is fixed to the end of the first metal column 163. At this time, the first metal layer 161 is electrically connected to the first metal column 163. The projection of the second metal layer 162 on the plane where the first metal layer 161 is located is located in the first metal layer 161. The projection of the first metal layer 161 on the ground layer 12 is located in the ground layer 12.

[0204] In this embodiment, the first edge 1611 of the first metal layer 161 of the second antenna unit 14b and the first edge 1411 of the first metal layer 141 of the first antenna unit 14a form a first slot 191. The projection of the first slot 191 on the ground layer 12 is located inside the ground layer 12.

[0205] Exemplarily, the projection of the first side 1621 of the second metal layer 162 on the first metal layer 161 coincides with the first side 1611 of the first metal layer 161. The projection of the third side 1623 of the second metal layer 162 on the first metal layer 161 coincides with the third side 1613 of the first metal layer 161.

[0206] Please refer again Fig.14 By dividing the first metal pillar 163 and the second metal pillar 164 into two regions and setting them apart on the second metal layer 162, when the second antenna unit 14b is in the working state, the current path ( Fig.14 The invention is simply illustrated by thick lines and includes a ground layer 12, a third metal column 165, a first metal connecting sheet 166a, a second metal column 164, a second region 162b of the second metal layer 162 (see Fig.11 ), the first region 162a of the second metal layer 162 (see Fig.11) The first metal column 163 and the first metal layer 161. Since current can be transmitted between the first region 162a and the second region 162b of the second metal layer 162, the current path is bent once. In this way, compared with the antenna structure having the same current path and when the current path of the antenna structure is linear, the cross-sectional height H of the antenna structure 10 in this embodiment is lower, which is beneficial to the antenna structure 10 to achieve a thin design.

[0207] Exemplarily, the second antenna unit 14b may be a symmetric structure, or a partially symmetric structure, or the same or similar structure or a different structure. In this embodiment, the second antenna unit 14b is a symmetric structure. Specifically, please refer again to Fig.13 As shown, the second antenna unit 14b is symmetric about the symmetry plane of the second antenna unit 14b. Wherein, the symmetry plane of the second antenna unit 14b is perpendicular to the plane where the first metal layer 161 is located, and the diagonal line M2 of the first metal layer 161 is located in the symmetry plane of the second antenna unit 14b. One end of the diagonal line M2 of the first metal layer 161 is located at the connection of the first side 1611 and the third side 1613, and the other end is located at the connection of the second side 1612 and the fourth side 1614.

[0208] Exemplarily, the second antenna unit 14b and the first antenna unit 14a may be a symmetric structure, or a partially symmetric structure, or the same or similar structure or a different structure. In this embodiment, the second antenna unit 14b and the first antenna unit 14a are symmetric structures. Specifically, the second antenna unit 14b is symmetric with the first antenna unit 14a about the first symmetry plane N1. It should be noted that the first symmetry plane N1 is not an actual structure on the antenna structure 10. The first symmetry plane N1 is a virtual plane. Fig.13 The first symmetry plane N1 is schematically represented by a dotted line.

[0209] Please refer to Fig.15 , Fig.15 is Figure 4 As shown, it is an exploded view of the third antenna unit 14c and the fourth antenna unit 14d. The third antenna unit 14c includes a first metal layer 171, a second metal layer 172, a first metal column 173, a second metal column 174, a third metal column 175, a first metal connecting piece 176a, and a second metal connecting piece 176b. Among them, the structural settings of the first metal layer 171, the second metal layer 172, the first metal column 173, the second metal column 174, the third metal column 175, the first metal connecting piece 176a, and the second metal connecting piece 176b can refer to the structural settings of the first metal layer 141, the second metal layer 142, the first metal column 143, the second metal column 144, the third metal column 145, the first metal connecting piece 146a, and the second metal connecting piece 146b of the first antenna unit 14a. Specifically, it will not be elaborated here.

[0210] In other embodiments, the third antenna unit 14c may also not include the third metal column 175, the first metal connecting piece 176a, and the second metal connecting piece 176b.

[0211] Please refer to Figures 16 to 18 , Fig.16 which Figure 3 is a partial structural schematic diagram of the antenna structure 10 shown. Fig.17 which Figure 3 is a partial structural schematic diagram of the antenna structure 10 shown. Fig.18 which Figure 3 is a structural schematic diagram of the antenna structure 10 shown. The arrangement manners among the first metal layer 171, the second metal layer 172, the first metal column 173, the second metal column 174, the third metal column 175, the first metal connecting piece 176a, and the second metal connecting piece 176b of the third antenna unit 14c may refer to the arrangement manners among the first metal layer 141, the second metal layer 142, the first metal column 143, the second metal column 144, the third metal column 145, the first metal connecting piece 146a, and the second metal connecting piece 146b of the first antenna unit 14a. Details are not described herein again.

[0212] Among them, the third antenna unit 14c is located on one side of the first antenna unit 14a. The third antenna unit 14c is opposite to and spaced apart from the first antenna unit 14a. At this time, the first antenna unit 14a is located between the second antenna unit 14b and the third antenna unit 14c.

[0213] In addition, a second gap 192 is formed between the third side 1713 of the first metal layer 171 of the third antenna unit 14c and the third side 1413 of the first metal layer 141 of the first antenna unit 14a. The second gap 192 communicates with the first gap 191.

[0214] In this embodiment, the second metal layer 172, the second metal column 174, the third metal column 175, the first metal connecting piece 176a, the second metal connecting piece 176b, and the ground layer 12 of the third antenna unit 14c can enclose a third space S3. The third space S3 communicates with the first space S1 and the second space S2. It can be understood that the third space S3 can be used to arrange other components of the antenna structure 10. In this way, on the one hand, the space utilization rate of the antenna structure 10 is relatively high. On the other hand, the antenna structure 10 can be arranged compactly, which is beneficial to the miniaturization of the antenna structure 10.

[0215] Exemplarily, the second through hole 122 of the ground layer 12 communicates with the third space S3.

[0216] In addition, in this embodiment, the first metal column 173 and the second metal column 174 of the third antenna unit 14c can also be arranged at intervals in two regions on the second metal layer 172, so that the current path is bent once. In this way, compared with the antenna structure with the same current path and when the current path of the antenna structure is linear, the cross-sectional height of the antenna structure 10 in this embodiment is lower, which is beneficial to the thinning of the antenna structure 10.

[0217] Exemplarily, the third antenna unit 14c can be a symmetric structure, or a partially symmetric structure, or the same or similar structures or different structures. In this embodiment, the third antenna unit 14c is a symmetric structure. Specifically, please refer again to Fig.18 As shown, the third antenna unit 14c is symmetric about the symmetry plane of the third antenna unit 14c. Among them, the symmetry plane of the third antenna unit 14c is perpendicular to the plane where the first metal layer 171 is located, and the diagonal line M3 of the first metal layer 171 is located in the symmetry plane of the third antenna unit 14c. One end of the diagonal line M3 of the first metal layer 171 is located at the connection of the first side 1711 and the third side 1713, and the other end is located at the connection of the second side 1712 and the fourth side 1714.

[0218] Exemplarily, the third antenna unit 14c and the first antenna unit 14a can be a symmetric structure, or a partially symmetric structure, or the same or similar structures or different structures. In this embodiment, the third antenna unit 14c and the first antenna unit 14a are symmetric structures. Specifically, the third antenna unit 14c is symmetric with the first antenna unit 14a about the second symmetry plane N2. It should be noted that the second symmetry plane N2 is not an actual structure on the antenna structure 10. The second symmetry plane N2 is a virtual plane. Fig.18 The second symmetry plane N2 is schematically represented by a dotted line.

[0219] Please refer again to Fig.15 , the fourth antenna unit 14d includes a first metal layer 181, a second metal layer 182, a first metal column 183, a second metal column 184, a third metal column 185, a first metal connection piece 186a, and a second metal connection piece 186b. Among them, the structural settings of the first metal layer 181, the second metal layer 182, the first metal column 183, the second metal column 184, the third metal column 185, the first metal connection piece 186a, and the second metal connection piece 186b can also refer to the structural settings of the first metal layer 141, the second metal layer 142, the first metal column 143, the second metal column 144, the third metal column 145, the first metal connection piece 146a, and the second metal connection piece 146b of the first antenna unit 14a. Specifically, it will not be elaborated here.

[0220] Among them, the fourth antenna unit 14d is located on the side of the third antenna unit 14c close to the second antenna unit 14b. The fourth antenna unit 14d is opposite to and spaced from the third antenna unit 14c, and is opposite to and spaced from the second antenna unit 14b. At this time, the fourth antenna unit 14d is located between the third antenna unit 14c and the second antenna unit 14b.

[0221] In addition, a third gap 193 is formed between the first side 1811 of the first metal layer 181 of the fourth antenna unit 14d and the first side 1711 of the first metal layer 171 of the third antenna unit 14c.

[0222] In addition, a fourth gap 194 is formed between the third side 1813 of the first metal layer 181 of the fourth antenna unit 14d and the third side 1613 of the first metal layer 161 of the second antenna unit 14b. The fourth gap 194 communicates with the first gap 191, the second gap 192, and the third gap 193. At this time, the first gap 191, the second gap 192, the third gap 193, and the fourth gap 194 form a substantially "cross-shaped" shape.

[0223] In this embodiment, the second metal layer 182, the second metal column 184, the third metal column 185, the first metal connection piece 186a, the second metal connection piece 186b, and the ground layer 12 of the fourth antenna unit 14d enclose a fourth space S4. The fourth space S4 communicates with the first space S1, the second space S2, and the third space S3, that is, the first space S1, the second space S2, the third space S3, and the fourth space S4 enclose a large space. It can be understood that the fourth space S4 can be used to arrange other components of the antenna structure 10. In this way, on the one hand, the space utilization rate of the antenna structure 10 is relatively high. On the other hand, the antenna structure 10 can be arranged compactly, which is beneficial to the miniaturization of the antenna structure 10.

[0224] In addition, in this embodiment, the first metal column 183 and the second metal column 184 of the fourth antenna unit 14d can be spaced apart in two regions on the second metal layer 182, so that the current path is bent once. In this way, compared with the antenna structure with the same current path and when the current path of the antenna structure is linear, the cross-sectional height of the antenna structure 10 in this embodiment is lower, which is beneficial to the thinning of the antenna structure 10.

[0225] Exemplarily, the fourth antenna unit 14d can be a symmetric structure, or a partially symmetric structure, or the same or similar structures or different structures. In this embodiment, the fourth antenna unit 14d is a symmetric structure. Specifically, please refer to again Fig.18As shown, the fourth antenna unit 14d is symmetric about the symmetry plane of the fourth antenna unit 14d. Among them, the symmetry plane of the fourth antenna unit 14d is perpendicular to the plane where the first metal layer 181 is located, and the diagonal line M4 of the first metal layer 181 is located in the symmetry plane of the fourth antenna unit 14d. One end of the diagonal line M4 of the first metal layer 181 is located at the connection of the first side 1811 and the third side 1813, and the other end is located at the connection of the second side 1812 and the fourth side 1814.

[0226] Exemplarily, the fourth antenna unit 14d and the third antenna unit 14c may be symmetric structures, or partially symmetric structures, or the same or similar structures, or different structures. In this embodiment, the fourth antenna unit 14d and the third antenna unit 14c are symmetric structures. Specifically, the fourth antenna unit 14d is also symmetric with the third antenna unit 14c about the first symmetry plane N1.

[0227] Exemplarily, the fourth antenna unit 14d and the second antenna unit 14b may be symmetric structures, or partially symmetric structures, or the same or similar structures, or different structures. In this embodiment, the fourth antenna unit 14d and the second antenna unit 14b are symmetric structures. Specifically, the fourth antenna unit 14d is symmetric with the second antenna unit 14b about the second symmetry plane N2.

[0228] Exemplarily, the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d may be centrosymmetric structures, or partially centrosymmetric structures, or the same or similar structures, or different structures. In this embodiment, the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d are centrosymmetric about the center point. Among them, the center point is located at the connection of the first symmetry plane N1 and the second symmetry plane N2. The center point is the central position of the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d. In this embodiment, the symmetry planes of the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d all pass through the center point. Combining Fig.11 As shown, the second metal column 144 of the first antenna unit 14a is located on the side of the first metal column 143 of the first antenna unit 14a away from the center point. The second metal column 164 of the second antenna unit 14b is located on the side of the first metal column 163 of the second antenna unit 14b away from the center point. Combining Fig.17 As shown, the second metal column 174 of the third antenna unit 14c is located on the side of the first metal column 163 of the third antenna unit 14c away from the center point. The second metal column 184 of the fourth antenna unit 14d is located on the side of the first metal column 183 of the fourth antenna unit 14d away from the center point.

[0229] In this embodiment, by compactly arranging the respective structural parts of the antenna unit 14, first space S1, second space S2, third space S3, and fourth space S4 are enclosed in the antenna structure 10. It can be understood that the first space S1, second space S2, third space S3, and fourth space S4 can be used to arrange other components of the antenna structure 10. In this way, on the one hand, the space utilization rate of the antenna structure 10 is relatively high. On the other hand, the structure of the antenna structure 10 is relatively compact, which is conducive to the miniaturization setting of the antenna structure 10. In addition, the current path of the antenna structure 10 is arranged with a single bend. In this way, compared with the antenna structure with the same current path and when the current path of the antenna structure is linear, the cross-sectional height H of the antenna structure 10 in this embodiment is not only lower, but also the widths of the first slot 191, second slot 192, third slot 193, and fourth slot 194 of the antenna structure 10 are lower. Exemplarily, the widths of the first slot 191, second slot 192, third slot 193, and fourth slot 194 can all be in the range of 0.03λ0 to 0.1λ0. In this way, the miniaturization setting of the antenna structure 10 is more easily achieved.

[0230] The above specifically introduced the first antenna unit 14a, second antenna unit 14b, third antenna unit 14c, and fourth antenna unit 14d of the antenna structure 10 in conjunction with the relevant drawings. In this embodiment, the first antenna unit 14a and the fourth antenna unit 14d can form an electric dipole. The second antenna unit 14b and the third antenna unit 14c can form another electric dipole. In addition, the first slot 191 and the third slot 193 can form a magnetic dipole. The second slot 192 and the fourth slot 194 can form another magnetic dipole. The feeding unit 13 of the antenna structure 10 will be specifically introduced below in conjunction with the relevant drawings.

[0231] Please refer to Fig.19 , Fig.19 is Figure 4 the structural schematic diagram of the feeding unit shown. The feeding unit 13 includes a first feeding branch 131, a second feeding branch 132, a first metal hole 133, and a second metal hole 134. Among them, the structure of the first metal hole 133 can be to form a layer of metal material on the pore wall of the via hole. At this time, the first metal hole 133 is generally in a "pipe" structure. In addition, the structure of the first metal hole 133 can also be to fill the via hole with metal material. At this time, the first metal hole 133 can be in a "columnar" structure. In other embodiments, the first metal hole 133 can also be other structures. In addition, the structure of the second metal hole 134 can refer to the structure of the first metal hole 133 in this embodiment. Specifically, it will not be elaborated below.

[0232] Among them, the first feeding stub 131 includes a first part 1311, a second part 1312a, a third part 1312b, a fourth part 1312c, and a fifth part 1313 that are connected in sequence. The first part 1311 and the fifth part 1313 are arranged on the same layer. The second part 1312a, the third part 1312b, and the fourth part 1312c are substantially in a "U" shape. Exemplarily, the second part 1312a and the fourth part 1312c can adopt a metal via structure. At this time, both ends of the third part 1312b are connected to the first part 1311 and the fifth part 1313 through a metal via structure respectively.

[0233] Exemplarily, the fifth part 1313 can be in a "T" shape.

[0234] It can be understood that in this embodiment, the resonant frequency of the antenna structure 10 can be changed by changing factors such as the shapes or sizes of the first part 1311, the second part 1312a, the third part 1312b, the fourth part 1312c, and the fifth part 1313 of the first feeding stub 131.

[0235] Please refer to again Fig.19 , the first metal via 133 includes a first via part 1331 and a second via part 1332. The second via part 1332 is connected to the first via part 1331. The diameter of the first via part 1331 is larger than the diameter of the second via part 1332. It can be understood that in the forming process of the first metal via, two dielectric plates with different thicknesses (one dielectric plate is provided with the first via part 1331, and the other dielectric plate is provided with the second via part 1332) can be stacked into a whole by bonding or welding or other means.

[0236] Among them, the second via part 1332 is connected to the first part 1311 of the first feeding stub 131.

[0237] Please refer to again Fig.19 , the second feeding stub 132 is substantially in a "strip" shape as a whole. The second feeding stub 132 includes a first part 1321, a second part 1322, and a third part 1323 that are connected in sequence. The first part 1321, the second part 1322, and the third part 1323 are arranged on the same layer.

[0238] Exemplarily, the width of the first part 1321 is larger than the width of the second part 1322. The width of the third part 1323 is larger than the widths of the first part 1321 and the second part 1322. The second part 1322 and the third part 1323 are substantially in a "T" shape.

[0239] It can be understood that the resonant frequency of the antenna structure 10 can be changed by changing factors such as the shape or size of the first part 1321, the second part 1322, and the third part 1323 of the second feeding stub 132.

[0240] In addition, the second metal hole 134 includes a third hole portion 1341 and a fourth hole portion 1342. The third hole portion 1341 is connected to the fourth hole portion 1342. The diameter of the third hole portion 1341 is larger than the diameter of the fourth hole portion 1342. Among them, the fourth hole portion 1342 is connected to the first part 1321 of the second feeding stub 132. In this embodiment, the structure of the second metal hole 134 is the same as the structure of the first metal hole 133.

[0241] In other embodiments, the structure of the first feeding stub 131 can also adopt the structure of the second feeding stub 132, that is, the first feeding stub 131 is in a "strip" shape. At this time, by arranging the first feeding stub 131 and the second feeding stub 132 in different layers, that is, the distance between the first feeding stub 131 and the ground layer 12 is greater than or less than the distance between the second feeding stub 132 and the ground layer 12, so as to avoid short - circuiting between the first feeding stub 131 and the second feeding stub 132.

[0242] Please refer to Fig. 20 and Fig.21 and in combination with Fig.19 as shown, Fig. 20 is Figure 3 a partial structural schematic diagram of the antenna structure 10 shown in Fig.21 is Fig. 20 a schematic cross - sectional view of the antenna structure 10 along line B - B shown in Figure 3 . The first hole portion 1331 of the first metal hole 133 is disposed opposite to the first through - hole 121 of the ground layer 12. The first hole portion 1331 of the first metal hole 133 is electrically connected to the radio - frequency circuit 20 through the first through - hole 121 (please refer to Figure 3 ). Exemplarily, the first hole portion 1331 can be electrically connected to the radio - frequency circuit 20 through a conductive structure such as a microstrip line, a coaxial cable, a strip line, or a probe. The first hole portion 1331 is also spaced apart from the ground layer 12 to avoid short - circuiting with the ground layer 12.

[0243] It can be understood that since the first part 1311 and the fifth part 1313 of the first feeding stub 131 are arranged in the same layer, the distance between the first part 1311 of the first feeding stub 131 and the ground layer 12 is equal to the distance between the fifth part 1313 of the first feeding stub 131 and the ground layer 12.

[0244] In addition, a part of the first portion 1311 of the first feeding stub 131 is located on the side of the second metal layer 142 of the first antenna unit 14a facing the ground layer 12, that is, within the first space S1 of the first antenna unit 14a. In addition, a part of the fifth portion 1313 of the first feeding stub 131 is located on the side of the second metal layer 182 of the fourth antenna unit 14d facing the ground layer 12, that is, within the fourth space S4 of the fourth antenna unit 14d. In addition, the extending direction of the first feeding stub 131 is parallel to the diagonal line M1 of the first metal layer 141 of the first antenna unit 14a, that is, the included angle between the extending direction of the first feeding stub 131 and the first side 1411 of the first metal layer 141 of the second antenna unit 14b can be 45°. In addition, the extending direction of the first feeding stub 131 is also parallel to the diagonal line M4 of the first metal layer 181 of the fourth antenna unit 14d, that is, the included angle between the extending direction of the first feeding stub 131 and the first side 1811 of the first metal layer 181 of the fourth antenna unit 14d can also be 45°.

[0245] It can be understood that when the RF circuit 20 transmits an RF signal, the RF signal can be coupled and fed to the second metal layer 182 and the first metal layer 181 of the fourth antenna unit 14d through the first metal hole 133, the first portion 1311, the second portion 1312a, the third portion 1312b, the fourth portion 1312c, and the fifth portion 1313 of the first feeding stub 131. At this time, there is current transmission in the current path formed by the ground layer 12, the third metal post 185, the first metal connection piece 186a, the second metal post 184, the second region 182b of the second metal layer 182, the first region 182a of the second metal layer 182, the first metal post 183, and the first metal layer 181.

[0246] In addition, the RF signal can also be coupled and fed to the second metal layer 142 and the first metal layer 141 of the first antenna unit 14a through the first metal hole 133 and the first portion 1311 of the first feeding stub 131. At this time, there is current transmission in the current path formed by the ground layer 12, the third metal post 145, the first metal connection piece 146a, the second metal post 144, the second region 142b of the second metal layer 142, the first region 142a of the second metal layer 142, the first metal post 143, and the first metal layer 141.

[0247] Please refer to Fig. 22 and Fig.23 and, in combination with Fig.19 shown, Fig.21 is Figure 3 a partial structural schematic diagram of the antenna structure 10 shown in Fig.23 is Fig. 22Schematic cross-sectional view of the antenna structure 10 shown along the line C-C. The third hole portion 1341 of the second metal hole 134 is disposed opposite to the second through hole 122 of the ground layer 12. The third hole portion 1341 of the second metal hole 134 is electrically connected to the RF circuit 20 through the second through hole 122 (please refer to Figure 3 ). Exemplarily, the third hole portion 1341 can be electrically connected to the RF circuit 20 through a conductive structure such as a microstrip line, a coaxial cable, a strip line, or a probe. The third hole portion 1341 is also spaced apart from the ground layer 12 to avoid short-circuiting with the ground layer 12.

[0248] In the present embodiment, the second feeding branch 132, the first part 1311 of the first feeding branch 131, and the fifth part 1313 of the first feeding branch 131 are disposed on the same layer. The distances between the second feeding branch 132 and the ground layer 12, between the first part 1311 of the first feeding branch 131 and the ground layer 12, and between the fifth part 1313 of the first feeding branch 131 and the ground layer 12 are all equal.

[0249] In addition, a part of the first part 1321 of the second feeding branch 132 is located on the side of the second metal layer 172 of the third antenna unit 14c facing the ground layer 12, that is, located in the third space S3 of the third antenna unit 14c. A part of the third part 1323 of the second feeding branch 132 is located on the side of the second metal layer 162 of the second antenna unit 14b facing the ground layer 12, that is, located in the second space S2 of the second antenna unit 14b. The extending direction of the second feeding branch 132 is parallel to the diagonal line M3 of the first metal layer 141 of the third antenna unit 14c, that is, the included angle between the extending direction of the second feeding branch 132 and the first side 1711 of the first metal layer 171 of the second antenna unit 14b can be 45°. The extending direction of the second feeding branch 132 is also parallel to the diagonal line M2 of the first metal layer 161 of the second antenna unit 14b, that is, the included angle between the extending direction of the second feeding branch 132 and the first side 1611 of the first metal layer 161 of the second antenna unit 14b can also be 45°.

[0250] It can be understood that when the RF circuit 20 transmits an RF signal, the RF signal can be coupled and fed to the second metal layer 162 and the first metal layer 161 of the second antenna unit 14b through the second metal hole 134, the first part 1321, the second part 1322, and the third part 1323 of the second feeding branch 132. At this time, there is current transmission in the current path formed by the ground layer 12, the third metal column 165, the first metal connection piece 166a, the second metal column 164, the second region 162b of the second metal layer 162, the first region 162a of the second metal layer 162, the first metal column 163, and the first metal layer 161.

[0251] In addition, the radio frequency signal can also be coupled and fed to the second metal layer 172 and the first metal layer 171 of the third antenna unit 14c through the second metal via 134 and the first part 1321 of the second feeding stub 132. At this time, the current path formed by the ground layer 12, the third metal post 175, the first metal connecting piece 176a, the second metal post 174, the second region 172b of the second metal layer 172, the first region 172a of the second metal layer 172, the first metal post 173, and the first metal layer 171 has current transmission.

[0252] In other embodiments, please refer back to Fig.21 , the first part 1311 of the first feeding stub 131 can be directly connected to the second metal layer 142 of the first antenna unit 14a. Additionally, the fifth part 1313 of the first feeding stub 131 can be directly connected to the second metal layer 182 of the fourth antenna unit 14d. In this way, when the radio frequency circuit 20 transmits a radio frequency signal, the radio frequency signal can be directly fed to the second metal layer 182 and the first metal layer 181 of the fourth antenna unit 14d through the first metal via 133, the first part 1311, the second part 1312a, the third part 1312b, the fourth part 1312c, and the fifth part 1313 of the first feeding stub 131. In addition, the radio frequency signal can also be directly fed to the second metal layer 142 and the first metal layer 141 of the first antenna unit 14a through the first metal via 133 and the first part 1311 of the first feeding stub 131.

[0253] In other embodiments, please refer back to Fig.23 , the first part 1321 of the second feeding stub 132 can be directly connected to the second metal layer 172 of the third antenna unit 14c. The third part 1323 of the second feeding stub 132 is directly connected to the second metal layer 162 of the second antenna unit 14b. In this way, when the radio frequency circuit 20 transmits a radio frequency signal, the radio frequency signal can be directly fed to the second metal layer 162 and the first metal layer 161 of the second antenna unit 14b through the second metal via 134, the first part 1321, the second part 1322, and the third part 1323 of the second feeding stub 132. The radio frequency signal can also be directly fed to the second metal layer 172 and the first metal layer 171 of the third antenna unit 14c through the second metal via 134 and the first part 1321 of the second feeding stub 132.

[0254] The feeding unit 13 has been specifically introduced above in conjunction with the relevant drawings. The specific structure of the matching via group 15 will be specifically introduced below in conjunction with the relevant drawings.

[0255] Please refer to Fig.24 , Fig.24 is Figure 3Partial structural schematic diagram of the antenna structure 10 shown. A plurality of matching via groups 15 are electrically connected to the ground layer 12. The plurality of matching via groups 15 are located around the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d. The plurality of matching via groups 15 are located at the periphery of the ground layer 12, that is, the plurality of matching via groups 15 are arranged close to the edge of the ground layer 12. The plurality of matching via groups 15 are arranged around the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d.

[0256] Exemplarily, the number of the matching via groups 15 is four groups. The four groups of matching via groups 15 are respectively located at the four corners of the ground layer 12. One group of the matching via groups 15 is taken as an example in this embodiment for specific description.

[0257] In this embodiment, the matching via group 15 includes a first matching via 151, a second matching via 152, and a metal connection piece 153. The structural settings of the first matching via 151 and the second matching via 152 can refer to the structural settings of the third metal column 145 of the first antenna unit 14a (please refer to Figure 5 ). Details are not elaborated here.

[0258] Exemplarily, the number of the first matching vias 151 is three. The number of the second matching vias 152 is seven. The number of the metal connection pieces 153 is seven.

[0259] Among them, the plurality of first matching vias 151 are arranged at intervals, and one end of each first matching via 151 is connected to the ground layer 12. Exemplarily, the plurality of first matching vias 151 are arranged in an "L" shape.

[0260] In addition, the plurality of metal connection pieces 153 are located on the side of the first matching via 151 away from the ground layer 12 and are arranged at intervals in sequence. One of the metal connection pieces 153 is connected to the plurality of first matching vias 151. At this time, the first matching via 151 is located between the metal connection piece 153 and the ground layer 12.

[0261] Exemplarily, each metal connection piece 153 is in an "L" shape.

[0262] In addition, the plurality of second metal columns 144 are arranged at intervals. The plurality of second matching vias 152 are also arranged in an "L" shape. Each second matching via 152 is connected to each metal connection piece 153.

[0263] It can be understood that by providing a plurality of spaced-apart matching via groups 15 on the ground layer 12, the matching via groups 15 can increase the current path between the antenna element 14 and the ground layer 12. The matching via groups 15 can be used to tune the impedance of the antenna structure 10 to achieve impedance matching. Additionally, since the matching via groups 15 can increase the current path between the antenna element 14 and the ground layer 12, the sizes of the antenna element 14 and the ground layer 12 in this embodiment can be made smaller, thereby achieving miniaturization of the antenna structure 10.

[0264] In other embodiments, the matching via group 15 may not include the second matching via 152 and the metal connection piece 153, that is, the matching via group 15 only includes the first matching via 151.

[0265] Please refer to Fig.25a , Fig.25a which is a data graph of the reflection coefficient of the antenna structure 10 according to the embodiment of the present application varying with frequency. Among them, Fig.25a the solid line in represents the S11 curve, and the S11 curve is used to reflect the input return loss. The dashed line represents the S21 curve, and the S21 curve is used to reflect the isolation between two ports. The abscissa is frequency, with the unit of GHz, and the ordinate unit is dB. The frequency band range that the antenna structure 10 can cover is from 24.25 GHz to 43.5 GHz. The return loss is above 10 dB, and the isolation is above 15 dB, meeting the antenna performance requirements. Thus, the antenna structure 10 can operate within the ranges of 24.25 GHz - 29.5 GHz and 37 GHz - 43.5 GHz of the operating frequency band. The antenna structure 10 can support the n257, n258, n259, n260, and n261 frequency bands.

[0266] In addition, the antenna structure 10 has two resonant frequencies (also known as center frequencies). The two resonant frequencies are 24 GHz and 33 GHz respectively. The signal bandwidth △f corresponding to the antenna structure 10 = 43.5 GHz - 24.25 GHz = 19.25 GHz, the center frequency f0 = (43.5 GHz + 24.25 GHz) / 2 = 33.875 GHz, then the relative bandwidth ffoc1 = △f / f0 = 19.25 GHz / 33.875 GHz = 56.83%. The antenna structure 10 is a broadband antenna.

[0267] Please refer to Fig.25b , Fig.25b which is a polarization schematic diagram of the antenna structure 10 according to the embodiment of the present application. Among them, Fig.25bThe direction of the arrow in [description] indicates the direction of the current. In addition, the darkness of the arrow color represents the magnitude of the current intensity. The darker the arrow color, the greater the current intensity. The lighter the arrow color, the smaller the current intensity. The first polarization of the antenna structure 10 is the -45° polarization of the antenna structure 10. Most of the current in the antenna structure 10 is mainly in the first antenna unit 14a and the fourth antenna unit 14d, and a small part is in the second antenna unit 14b and the third antenna unit 14c. The current on the first antenna unit 14a flows along the diagonal line M1 and towards the direction close to the fourth antenna unit 14d. The current on the fourth antenna unit 14d flows along the diagonal line M4 and away from the first antenna unit 14a.

[0268] Please refer to Fig.25c , Fig.25c which is another polarization schematic diagram of the antenna structure 10 in the embodiment of the present application. Among them, Fig.25c the direction of the arrow in [description] indicates the direction of the current. In addition, the darkness of the arrow color represents the magnitude of the current intensity. The darker the arrow color, the greater the current intensity. The lighter the arrow color, the smaller the current intensity. The second polarization of the antenna structure 10 is the +45° polarization of the antenna structure 10. Most of the current in the antenna structure 10 is mainly in the second antenna unit 14b and the third antenna unit 14c, and a small part is in the first antenna unit 14a and the fourth antenna unit 14d. The current on the second antenna unit 14b flows along the diagonal line M2 and away from the third antenna unit 14c. The current on the third antenna unit 14c flows along the diagonal line M3 and towards the direction close to the second antenna unit 14b.

[0269] It can be seen from Fig.25b and Fig.25c that the antenna structure 10 of the present embodiment has two polarization modes, that is, the antenna structure 10 has the characteristic of dual polarization.

[0270] Please refer to Fig.25d , Fig.25d which is a partial cross-sectional schematic diagram of the packaging substrate structure 90 of the present embodiment. The packaging substrate structure 90 can adopt a multi-layer symmetric substrate setting. The packaging substrate structure 90 includes an antenna layer 91 and a prepreg (PP) dielectric layer 92 arranged in a stacked manner. The antenna layer 91 is used to set Figures 4 to 24 the antenna structure 10 shown in [description]. There are multiple layers of traces in the PP dielectric layer 92. Fig.25dThree layers of traces in the PP dielectric layer 92 are schematically shown by thick lines. The number of trace layers in the PP dielectric layer 92 is not specifically limited. Among them, each layer of traces can be electrically connected through metal vias or metal posts. The traces of the PP dielectric layer 92 can be used to provide RF signal traces, ground lines, power supply lines, etc. to the antenna layer 91. Of course, the PP dielectric layer 92 can also be used to provide signal traces, ground lines, power supply lines, etc. to other chips or devices. In addition, the PP dielectric layer 92 can also be used to raise the antenna layer 91. For example, the antenna structure 10 radiates or receives electromagnetic waves to the outside of the electronic device 1 through the insulating part of the rear cover 202. The PP dielectric layer 92 can make the antenna structure 10 closer to the rear cover 202.

[0271] In this embodiment, the antenna layer 91 further includes a core board (also referred to as a core dielectric layer) 911 and a metal layer 912 that are stacked. The core dielectric layer 911 is stacked on the PP dielectric layer 92. The core dielectric layer 911 can be connected to the PP dielectric layer 92 by means of lamination or the like. The metal layer 912 includes a dielectric part and a metal part. The dielectric part can completely wrap or partially wrap the metal part. Fig.25d Three layers of metal parts in the metal layer 912 are schematically shown by thick lines. The number of metal parts in the metal layer 912 is not specifically limited. Metal vias or metal posts can be provided in the dielectric part to electrically connect the metal parts of each layer. Exemplarily, the PP dielectric layer 92 can be symmetrically distributed with respect to the core dielectric layer 911.

[0272] In this embodiment, Figures 4 to 24 The shown antenna structure 10 is provided on the antenna layer 91. Among them, the first metal layer, the second metal layer, the first metal post, the second metal post, the first metal connection piece, and the second metal connection piece of each antenna unit 14 of the antenna structure 10 can all be provided on the metal layer 912. In addition, the third metal post and the ground layer 12 of each antenna unit 14 of the antenna structure 10 can both be provided on the core dielectric layer 911.

[0273] In addition, the first feeding branch 131, the second feeding branch 132 of the feeding unit 13, the second hole part 1332 of the first metal via 133 of the feeding unit 13, and the fourth hole part 1342 of the second metal via 134 of the feeding unit 13 can all be provided on the metal layer 912. The first hole part 1331 of the first metal via 133 of the feeding unit 13 and the third hole part 1341 of the second metal via 134 of the feeding unit 13 can both be provided on the core dielectric layer 911. The first hole part 1331 of the first metal via 133 of the feeding unit 13 and the third hole part 1341 of the second metal via 134 of the feeding unit 13 can be electrically connected to the RF transceiver chip 21 through the signal traces, ground lines, and power supply lines of the PP dielectric layer 92.

[0274] In addition, the first matching via 151 of the matching via group 15 and the metal connecting piece 153 can both be disposed on the metal layer 912. The second matching via 152 of the matching via group 15 can be disposed on the core dielectric layer 911.

[0275] and Figures 4 to 24 the technical content that is the same as or similar to the illustrated embodiment will not be elaborated: Please refer to Fig.26 , Fig.26 FIG. is a schematic structural diagram of another embodiment of the first metal connecting piece 146a and the second metal connecting piece 146b of the first antenna unit 14a provided by an embodiment of the present application. The first metal connecting piece 146a includes a third region 1463a and a fourth region 1463b that are spaced apart. Fig.26 The third region 1463a and the fourth region 1463b are schematically distinguished by a dashed line. Among them, a part of the third region 1463a is located in the first connecting portion 1461 of the first metal connecting piece 146a, and a part of the third region 1463a is located in the second connecting portion 1462 of the first metal connecting piece 146a. A part of the fourth region 1463b is located in the first connecting portion 1461 of the first metal connecting piece 146a, and a part of the fourth region 1463b is located in the second connecting portion 1462 of the first metal connecting piece 146a. Exemplarily, the shapes of the third region 1463a and the fourth region 1463b can both be in an "L" shape. In other embodiments, the shapes of the third region 1463a and the fourth region 1463b are not specifically limited.

[0276] It can be understood that, compared with the width a1 of the first connecting portion 1461 and the width a2 of the second connecting portion 1462 of the first metal connecting piece 146a in the first embodiment, the width a1 of the first connecting portion 1461 and the width a2 of the second connecting portion 1462 of the first metal connecting piece 146a in this embodiment are longer. In addition, the second metal connecting piece 146b in this embodiment can refer to the setting manner of the second metal connecting piece 146b in the first embodiment. This will not be elaborated here.

[0277] Please refer to Fig. 27 , and in combination with Fig.26 , Fig. 271 is a partial structural diagram of another embodiment of the antenna structure 10 provided in an embodiment of the present application. The second metal column 144 is connected to the third area 1463a of the first metal connecting sheet 146a. One end of the third metal column 145 is connected to the fourth area 1463b of the first metal connecting sheet 146a. In this way, the second metal column 144 and the third metal column 145 are arranged in two areas on the first metal connecting sheet 146a, that is, the projection of the second metal column 144 on the first metal connecting sheet 146a is staggered with the projection of the third metal column 145 on the first metal connecting sheet 146a (that is, there is no overlapping part).

[0278] See also Fig.28 , and combined with Fig.26 and Fig. 27 , Fig.28 1 is a partial cross-sectional schematic diagram of another embodiment of the antenna structure 10 provided in the embodiment of the present application. When the first antenna unit 14a is in the working state, the current path ( Fig.28 The structure 10 of the antenna 10 shown in FIG. 1 (simply illustrated by thick lines) includes a ground layer 12, a third metal column 145, a fourth region 1463b of the first metal connecting sheet 146a, a third region 1463a of the first metal connecting sheet 146a, a second metal column 144, a second metal layer 142, a first metal column 143, and a first metal layer 141. At this time, since the current can be transmitted between the fourth region 1463b of the first metal connecting sheet 146a and the third region 1463a of the first metal connecting sheet 146a, and between two regions on the second metal layer 142, the current path is set in two bends. Compared with the current path of the first embodiment, the cross-sectional height H of the antenna structure 10 of this embodiment can be made lower. In this way, the thinning setting of the antenna structure 10 is easier to achieve.

[0279] Exemplarily, when the length of the current path (i.e., the electrical length is equal to the sum of the cross-sectional height H of the antenna structure 10 and the side length of the second metal layer 142) is in the range of 0.25λ0 to 0.32λ0, the cross-sectional height H of the antenna structure 10 of this embodiment can be in the range of 0.1λ0 to 0.15λ0.

[0280] See also Fig.29 , Fig.29 1 is a schematic diagram of another embodiment of the antenna structure 10 provided in the embodiment of the present application. The configuration of the second antenna unit 14b, the third antenna unit 14c and the fourth antenna unit 14d can refer to the configuration of the first antenna unit 14a. The details are not repeated here.

[0281] It can be understood that the current paths of the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d in this embodiment can all be arranged with two bends. In this way, not only can the profile height H of the antenna structure 10 be made lower, but also the widths of the first slot 191, the second slot 192, the third slot 193, and the fourth slot 194 can be made smaller. Exemplarily, the widths of the first slot 191, the second slot 192, the third slot 193, and the fourth slot 194 can all be in the range of 0.03λ0 to 0.1λ0. In this way, the miniaturization setting of the antenna structure 10 is easier to achieve.

[0282] In other embodiments, the first antenna unit 14a may further include a third metal connecting piece, a fourth metal connecting piece, a fifth metal connecting piece,..., an mth metal connecting piece, where m is an integer and greater than 2. The setting manner of the mth metal connecting piece can refer to the setting manner of the first metal connecting piece 146a. Additionally, the first antenna unit 14a may further include a fourth metal post, a fifth metal post,..., an nth metal post, where n is an integer and greater than 3. In this way, through the setting of the mth metal connecting piece and the nth metal post, the current path of the first antenna unit 14a is arranged with multiple bends, thereby further reducing the profile height H of the antenna structure 10 and the widths of the first slot 191, the second slot 192, the third slot 193, and the fourth slot 194.

[0283] Please refer to again Fig.29 , the antenna structure 10 further includes a plurality of metal short - circuit hole groups 19. The plurality of metal short - circuit hole groups 19 are electrically connected to the ground layer 12. The plurality of metal short - circuit hole groups 19 are located around the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d.

[0284] Exemplarily, the number of the metal short - circuit hole groups 19 is four groups. One group of metal short - circuit hole groups 19 is located on the same side of the first antenna unit 14a and the second antenna unit 14b, and is arranged in the extending direction of the first slot 191. One group of metal short - circuit hole groups 19 is arranged opposite to the first slot 191. One group of metal short - circuit hole groups 19 is located on the same side of the first antenna unit 14a and the third antenna unit 14c, and is arranged in the extending direction of the second slot 192. One group of metal short - circuit hole groups 19 is arranged opposite to the second slot 192. One group of metal short - circuit hole groups 19 is located on the same side of the third antenna unit 14c and the fourth antenna unit 14d, and is arranged in the extending direction of the third slot 193. One group of metal short - circuit hole groups 19 is arranged opposite to the third slot 193. One group of metal short - circuit hole groups 19 is located on the same side of the fourth antenna unit 14d and the second antenna unit 14b., and is arranged in the extending direction of the fourth slot 194. One group of metal short - circuit hole groups 19 is opposite to the fourth slot 194.

[0285] In this embodiment, the metal shorting hole group 19 on the same side of the fourth antenna unit 14d and the second antenna unit 14b is taken as an example for specific description.

[0286] In this embodiment, the metal shorting hole group 19 includes a first shorting hole 197, a second shorting hole 198, a first metal sheet 199a, and a second metal sheet 199b. The structural settings of the first shorting hole 191 and the second shorting hole 198 can refer to the structural settings of the third metal post 145 of the first antenna unit 14a (please refer to Figure 5 ). Details are not elaborated here.

[0287] Exemplarily, the number of the first shorting holes 191 is one. The number of the second shorting holes 198 is two. The numbers of the first metal sheet 199a and the second metal sheet 199b are both one.

[0288] Among them, one end of the first shorting hole 197 is connected to the grounding layer 12, and the other end is connected to the first metal sheet 199a. At this time, the first shorting hole 197 is located between the grounding layer 12 and the first metal sheet 199a. One end of the second shorting hole 198 is connected to the first metal sheet 199a, and the other end is connected to the second metal sheet 199b. At this time, the second shorting hole 198 is located between the first metal sheet 199a and the second metal sheet 199b.

[0289] Exemplarily, the first shorting hole 197 and the second shorting hole 198 can be arranged at intervals in two regions on the first metal sheet 199a. Specifically, reference can be made to the way in which the second metal post 144 and the third metal post 145 in this embodiment are arranged at intervals in two regions on the first metal connection sheet 146a.

[0290] Please refer to Fig.30a , Fig.30a is a data graph of the reflection coefficient of the antenna structure 10 of the embodiment of the present application changing with frequency. Among them, Fig.30a the solid line in represents the S11 curve, and the S11 curve is used to reflect the input return loss. The dashed line represents the S21 curve, and the S21 curve is used to reflect the isolation degree between two ports. The abscissa is frequency, with the unit of GHz, and the ordinate unit is dB. As Fig.30a shown, the frequency band range that the antenna structure 10 can cover is from 24.25 GHz to 43.5 GHz. The return loss is above 10 dB, and the isolation degree is above 15 dB, meeting the antenna performance requirements. In this way, the antenna structure 10 can work within the ranges of the working frequency bands 24.25 GHz - 29.5 GHz and 37 GHz - 43.5 GHz. The antenna structure 10 can support the n257, n258, n259, n260, and n261 frequency bands.

[0291] In addition, from the Fig.30a S11 curve, it can be seen that when the antenna structure 10 has the metal shorting hole group 19, the antenna structure 10 has four resonant frequencies, which are 24 GHz, 32 GHz, 37 GHz, and 44 GHz respectively. It can be understood that, on the one hand, within the frequency bands of n257, n258, n259, n260, and n261, the antenna structure 10 adds a resonant point (resonant frequency of 44 GHz). On the other hand, within the frequency bands of n257, n258, n259, n260, and n261, the antenna structure 10 adds a notch point (frequency approximately 35 GHz). At this time, the resonant frequency (33 GHz) of the first embodiment can be split into two resonant frequencies (32 GHz, 37 GHz).

[0292] Please refer to Fig.30b , Fig.30b which is the current schematic diagram of the antenna structure 10 of the embodiment of the present application in the n259 frequency band. Among them, Fig.30b the direction of the small arrow in Fig.30b refers to the current direction of each position of the antenna structure 10. In addition, the depth of the color of the small arrow refers to the magnitude of the current intensity. The darker the color of the small arrow, the greater the current intensity. The lighter the color of the small arrow, the smaller the current intensity. Fig.30b The direction of the large arrow in Fig.30b refers to the overall current direction on one side of the antenna unit 14. According to Fig.30b it can be known that at 44 GHz, the current is generated around the antenna structure 10. Among them, the current directions on the same side of the antenna structure 10 are basically the same. For example, the current direction on the left side of the antenna structure 10 is generally upward, that is, the current directions on the left sides of the first antenna unit 14a and the third antenna unit 14c are both upward. Fig.30b It is represented by the large arrow of the solid line.

[0293] Please refer to Fig.30c , Fig.30c which is the electric field schematic diagram of the antenna structure 10 of the embodiment of the present application in the n259 frequency band. Fig.30c The direction of the arrow in Fig.30cIt can be known that at 44 GHz, an electric field is generated around the antenna structure 10. Among them, the electric field directions on the same side of the antenna structure 10 are distributed in an "opposite - positive - opposite" pattern. For example, the electric field distribution on the left side of the antenna structure 10 includes a first region M1, a second region M2, and a third region M3. The electric field direction in the first region M1 is upward. The electric field direction in the second region M2 is downward. The electric field direction in the third region M3 is upward. Taking the upward electric field direction in the first region M1 as positive and the downward electric field direction in the second region M2 as negative. It can be understood that the electric field distribution in the second region M2 is relatively small, so the antenna structure 10 can operate normally in the high - order mode (i.e., the resonance frequency is 44 GHz).

[0294] It can be understood that from Fig.30b and Fig.30c it can be known that at the 44 - GHz resonance position of the antenna structure 10, due to the metal short - circuit hole group 19 provided in the antenna structure 10, a high - order field pattern is introduced into the antenna structure 10, the currents are basically in the same direction, and a new resonance point (44 GHz) is added to the antenna structure 10.

[0295] Please refer to Fig.30d , Fig.30d which is a schematic diagram of the current of the antenna structure 10 in the n260 frequency band in the embodiment of the present application. Among them, Fig.30d the direction of the small arrows in it refers to the current direction at each position of the antenna structure 10. In addition, the depth of the color of the small arrows refers to the magnitude of the current intensity. The darker the color of the small arrow, the greater the current intensity. The lighter the color of the small arrow, the smaller the current intensity. Fig.30d The direction of the large arrow in Fig.30d refers to the overall current direction on one side of the antenna element 14. According to Fig.30d it can be known that at 35 GHz, a current is generated around the antenna structure 10. Among them, the current directions on the same side of the antenna structure 10 are basically opposite. For example, the current directions on the left side of the antenna structure 10 are opposite, that is, the current direction on the left side of the first antenna element 14a is downward ( Fig.30b represented by a large dotted - line arrow), and the current direction on the left side of the third antenna element 14c is upward (

[0296] Please refer to Fig.30e , Fig.30e which is a schematic diagram of the electric field of the antenna structure 10 in the n260 frequency band in the embodiment of the present application. Fig.30eThe direction of the arrow in [[]] indicates the direction of the electric field. In addition, the darkness of the arrow color indicates the magnitude of the electric field strength. The darker the arrow color, the greater the electric field strength. The lighter the arrow color, the smaller the electric field strength. Among them, the electric field directions on the same side of the antenna structure 10 are distributed in an "opposite" manner. For example, the electric field distribution on the left side of the antenna structure 10 includes a first region M1 and a second region M2. The electric field direction in the first region M1 is downward. The electric field direction in the second region M2 is upward. Taking the downward electric field direction in the first region M1 as negative and the upward electric field direction in the second region M2 as positive. At this time, the electric field directions are distributed in an "opposite" manner. The antenna structure 10 is in a high-order cancellation mode.

[0297] It can be understood that according to Fig.30d and Fig.30e it can be known that at the 35 GHz notch point position, due to the metal shorting hole group 19 provided in the antenna structure 10, the antenna structure 10 introduces a reverse field pattern. At this time, the current is reversed, generating a notch point. At the same time, due to the existence of the notch point, the original resonance mode is split into two, forming two resonance points. Therefore Fig.30a there will be one more resonance and one notch point on the S11 of

[0298] Please refer to Fig.31 , Fig.31 which is a schematic structural diagram of another implementation manner of the antenna structure 10 provided by the embodiment of the present application. The current paths of the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d in this implementation manner are all set with a single bend. Specifically, the setting manners of the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d can refer to Figures 4 to 24 the setting manners of the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d described in

[0299] Here, it will not be elaborated. Fig.29 In addition, the antenna structure 10 in this implementation manner further includes a plurality of metal shorting hole groups 19. The setting manner of the metal shorting hole group 19 can refer to

[0300] the metal shorting hole group 19 described in Fig.32a . Fig.32a Here, it will not be elaborated. Fig.32aThe solid line represents the S11 curve, which is used to reflect the input return loss. The dashed line represents the S21 curve, which is used to reflect the isolation between two ports. The abscissa is the frequency, with the unit of GHz, and the ordinate unit is dB. As shown in 32a, the frequency band range that the antenna structure 10 can cover is from 24.25 GHz to 43.5 GHz. In addition, the return loss is above 10 dB, and the isolation is above 15 dB, meeting the antenna performance requirements. In this way, the antenna structure 10 can operate in the ranges of the working frequency bands from 24.25 GHz to 29.5 GHz and from 37 GHz to 43.5 GHz. The antenna structure 10 can support the n257, n258, n259, n260, and n261 frequency bands.

[0301] Please refer to Figure 32b , Figure 32b which is a schematic cross-sectional view of the chip 1 provided by an embodiment of the present application. The chip 1 in this embodiment can be a chip based on the AiP (AiP, Antenna-in-Package) scheme.

[0302] Among them, the chip 1 includes an antenna structure 10, a chip body 40, a packaging substrate 51, and an injection molding 52. Both the antenna structure 10 and the chip body 40 are disposed on the packaging substrate 51 and electrically connected to the packaging substrate 51. The injection molding 52 encapsulates the antenna structure 10 and the chip body 40. Exemplarily, the injection molding 52 completely wraps the antenna structure 10. The injection molding 52 completely wraps the chip body 40. In other embodiments, the injection molding 52 can also semi-wrap the antenna structure 10. The injection molding 52 can also semi-wrap the chip body 40. Among them, the antenna structure 10 can refer to Figures 4 to 24 the antenna structure 10, or Figure 26 to Figure 29 the antenna structure 10 shown in Fig.31 Here, it will not be elaborated further.

[0303] Exemplarily, the chip body 40 is a radio frequency transceiver chip. The antenna structure 10 can be electrically connected to the chip body 40 through the packaging substrate 51. At this time, the chip body 40 transmits a radio frequency signal to the antenna structure 10 through the packaging substrate 51, so that the antenna structure 10 radiates electromagnetic waves according to the radio frequency signal. In addition, when the antenna structure 10 receives electromagnetic waves and converts the electromagnetic waves into a radio frequency signal, the chip body 40 can also receive the radio frequency signal converted by the antenna structure 10.

[0304] Exemplarily, the packaging substrate 51 can also be provided with a matching circuit (not shown in the figure). The matching circuit is electrically connected between the antenna structure 10 and the chip body 40.

[0305] In other embodiments, the chip can also be a chip based on the AiM (Antenna in Module) scheme or a chip based on the AoC (Antenna-on-Chip) scheme.

[0306] In this embodiment, the chip 1 can be applied to an electronic device. Specifically, the chip 1 can be disposed on the circuit board of the electronic device. The package substrate 51 of the chip 1 can be electrically connected to the circuit board.

[0307] It can be understood that in this embodiment, by disposing the antenna structure 10 on the package substrate 51 and wrapping it with the injection molded part 52, the integrity of the antenna structure 10, the chip body 40, and the package 50 is relatively good. Please refer to Fig.33 , Fig.33 FIG. is a schematic structural diagram of another embodiment of the electronic device 1 provided by the embodiment of the present application. The electronic device 1 can be a base station, a CPE (Customer Premise Equipment), a wireless access point device (for example, a wireless router), or a device for transmitting non-millimeter wave signals (for example, low-frequency signals). Fig.33 The electronic device 1 in the illustrated embodiment is described by taking a base station as an example.

[0308] Among them, the electronic device 1 has an antenna structure 10. It should be noted that since the antenna structure 10 is located inside the electronic device 1, Fig.33 the antenna structure 10 is schematically shown by a dotted line. Exemplarily, the frequency band covered by the antenna structure 10 in this embodiment can be 1.5 GHz - 3 GHz. In other embodiments, the antenna structure 10 can also cover other frequency bands.

[0309] Please refer to Fig.34 , Fig.34 is Fig.33 a schematic exploded view of the antenna structure 10 shown. The antenna structure 10 includes a dielectric layer 11, a ground layer 12, a feeding unit 13, a plurality of antenna units 14, and a plurality of matching metal walls 15. Among them, the setting manners of the dielectric layer 11, the ground layer 12, and the feeding unit 13 can refer to the setting manners of the dielectric layer 11, the ground layer 12, and the feeding unit 13 in the above embodiments. Specifically, it will not be elaborated here. In other embodiments, the sizes, shapes, etc. of the dielectric layer 11, the ground layer 12, and the feeding unit 13 can be flexibly set according to actual needs.

[0310] Please refer to Fig.35 , Fig.35 is Fig.34Exploded schematic view of the first antenna unit 14a shown. The first antenna unit 14a includes a first metal layer 141, a second metal layer 142, a first metal wall 143, a second metal wall 144, a third metal wall 145, and a metal connecting piece 146. Among them, the first metal wall 143 constitutes the first conductive member of this embodiment. The second metal wall 144, the third metal wall 145, and the metal connecting piece 146 constitute the second conductive member of this embodiment.

[0311] In this embodiment, the setting manners of the first metal layer 141 and the second metal layer 142 can refer to the setting manners of the first metal layer 141 and the second metal layer 142 in the above respective embodiments. Specifically, it will not be elaborated here. Among them, the sizes, shapes, etc. of the first metal layer 141 and the second metal layer 142 can be flexibly set according to actual needs.

[0312] Exemplarily, the first metal wall 143, the second metal wall 144, the third metal wall 145, and the metal connecting piece 146 are all in an "L" shape. In other embodiments, the first metal wall 143, the second metal wall 144, the third metal wall 145, and the metal connecting piece 146 can also all be in an arc shape.

[0313] Among them, the second metal layer 142 includes a first region 142a and a second region 142b which are arranged at intervals. Fig.35 The first region 142a and the second region 142b are schematically distinguished by a dotted line.

[0314] Exemplarily, both the first region 142a and the second region 142b are in an "L" shape. The first region 142a includes a first side 1421 and a third side 1423 of the second metal layer 142. The second region 142b includes a second side 1422 and a fourth side 1424 of the second metal layer 142.

[0315] Among them, the metal connecting piece 146 includes a third region 1463a and a fourth region 1463b which are arranged at intervals. Fig.35 The third region 1463a and the fourth region 1463b are schematically distinguished by a dotted line.

[0316] Exemplarily, the shapes of both the third region 1463a and the fourth region 1463b can be in an "L" shape.

[0317] Please refer to Fig.36 and Fig.37 and in combination with Fig.35 shown, Fig.36 is Fig.33 a partial structural schematic view of the antenna structure 10 shown. Fig.37 is Fig.33Partial structural schematic diagram of the antenna structure 10 shown. One end of the third metal wall 145 is connected to the ground layer 12, and the other end is connected to the fourth region 1463b of the metal connection piece 146. That is, the third metal wall 145 is connected between the ground layer 12 and the fourth region 1463b of the metal connection piece 146. One end of the second metal wall 144 is connected to the third region 1463a of the metal connection piece 146, and the other end is connected to the second region 142b of the second metal layer 142. That is, the second metal wall 144 is connected between the third region 1463a of the metal connection piece 146 and the second region 142b of the second metal layer 142. One end of the first metal wall 143 is connected to the first region 142a of the second metal layer 142, and the other end is connected to the first metal layer 141. That is, the first metal wall 143 is connected between the first region 142a of the second metal layer 142 and the first metal layer 141.

[0318] In this embodiment, the projection of the third metal wall 145 on the metal connection piece 146 is offset from the projection of the second metal wall 144 on the metal connection piece 146. In addition, the projection of the second metal wall 144 on the second metal layer 142 is offset from the projection of the first metal wall 143 on the second metal layer 142. In other embodiments, the projection of the third metal wall 145 on the metal connection piece 146 and the projection of the second metal wall 144 on the metal connection piece 146 at least partially overlap.

[0319] Exemplarily, the first side 1421 of the second metal layer 142 and the first side 1411 of the first metal layer 141 are arranged opposite to each other. The third side 1423 of the second metal layer 142 and the third side 1413 of the first metal layer 141 are arranged opposite to each other.

[0320] Among them, the second metal layer 142, the first metal wall 143, the second metal wall 144, the third metal wall 145, the metal connection piece 146, and the ground layer 12 enclose a first space S1. It can be understood that the first space S1 can be used to arrange other components of the antenna structure 10. In this way, on the one hand, the space utilization rate of the antenna structure 10 is relatively high. On the other hand, the antenna structure 10 can be arranged compactly, which is conducive to the miniaturization of the antenna structure 10.

[0321] In this embodiment, the second metal wall 144 and the third metal wall 145 are spaced apart in two regions on the metal connecting piece 146, and the first metal wall 143 and the second metal wall 144 are spaced apart in two regions on the second metal layer 142. Thus, when the first antenna unit 14a is in the working state, the current path includes the ground layer 12, the third metal wall 145, the metal connecting piece 146, the second metal wall 144, the second metal layer 142, the first metal wall 143, and the first metal layer 141. Since the current can be transmitted between the third region 1463a and the fourth region 1463b of the metal connecting piece 146, and between the first region 142a and the second region 142b of the second metal layer 142, the current path can be bent twice. In this way, compared with the antenna structure with the same current path and when the current path of the antenna structure is linear, the sectional height H of the antenna structure 10 in this embodiment is lower, which is beneficial to the miniaturization of the antenna structure 10.

[0322] In other embodiments, the first antenna unit 14a may not include the third metal wall 145 and the metal connecting piece 146. At this time, the second metal wall 144 is directly connected to the ground layer 12. In this way, the current path of the first antenna unit 14a is bent once.

[0323] In other embodiments, the first antenna unit 14a may further include a second metal connecting piece, a third metal connecting piece,..., an mth metal connecting piece, where m is an integer and greater than 1. The setting manner of the mth metal connecting piece can refer to the setting manner of the metal connecting piece 146a. In addition, the first antenna unit 14a may further include a fourth metal wall, a fifth metal wall,..., an nth metal wall, where n is an integer and greater than 3. In this way, through the setting of the mth metal connecting piece and the nth metal wall, the current path of the first antenna unit 14a is bent multiple times.

[0324] Exemplarily, the first antenna unit 14a may be a symmetric structure, or a partially symmetric structure, or the same or similar structures or different structures. In this embodiment, the first antenna unit 14a is a symmetric structure. Specifically, please refer again to Fig.37 that the first antenna unit 14a is symmetric about the symmetry plane of the first antenna unit 14a. Among them, the symmetry plane of the first antenna unit 14a is perpendicular to the plane where the first metal layer 141 is located, and the diagonal line M1 of the first metal layer 141 is located in the symmetry plane of the first antenna unit 14a.

[0325] Please refer to Fig.38 Fig.38 is Fig.33Schematic diagram of the antenna structure 10 shown. The setting manners of the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d can refer to the setting manner of the first antenna unit 14a. In addition, the positional relationship and the connection relationship among the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d can also refer to the positional relationship and the connection relationship among the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d in the first embodiment. Details are not described herein again.

[0326] In this embodiment, by compactly arranging the various parts of the antenna unit 14, new spaces are created in the antenna structure 10, that is, a first space S1 is enclosed in the antenna structure 10 (please refer to Fig.36 ), a second space S2 (please refer to Fig.36 ), a third space (not shown in the figure), and a fourth space (not shown in the figure). It can be understood that the first space S1, the second space S2, the third space, and the fourth space can be used to arrange other components of the antenna structure 10. In this way, on the one hand, the space utilization rate of the antenna structure 10 is relatively high. On the other hand, the structure of the antenna structure 10 is relatively compact, which is conducive to the miniaturization of the antenna structure 10. In addition, the current path of the antenna structure 10 is arranged to be bent twice. In this way, compared with an antenna structure having the same current path and the current path of the antenna structure being linear, not only the cross-sectional height H of the antenna structure 10 in this embodiment is relatively low, but also the widths of the first gap 191, the second gap 192, the third gap 193, and the fourth gap 194 of the antenna structure 10 are relatively low.

[0327] Exemplarily, the second antenna unit 14b and the first antenna unit 14a can be a symmetric structure, or a partially symmetric structure, or the same or similar structures, or different structures. The second antenna unit 14b and the first antenna unit 14a are a symmetric structure. Specifically, the second antenna unit 14b is symmetric with the first antenna unit 14a about the first symmetry plane. Among them, the first symmetry plane is perpendicular to the plane where the first metal layer 141 of the first antenna unit 14a is located, and the central plane N1 between the first antenna unit 14a and the second antenna unit 14b is located in the first symmetry plane.

[0328] Exemplarily, the third antenna unit 14c and the first antenna unit 14a may be of a symmetric structure, or a partially symmetric structure, or the same or similar structure, or different structures. In this embodiment, the third antenna unit 14c and the first antenna unit 14a are of a symmetric structure. Specifically, the third antenna unit 14c is symmetric with the first antenna unit 14a with respect to the second symmetry plane. Wherein, the second symmetry plane is perpendicular to the plane where the first metal layer 171 of the third antenna unit 14c is located, and the central plane N2 between the first antenna unit 14a and the third antenna unit 14c is located in the second symmetry plane.

[0329] Exemplarily, the fourth antenna unit 14d and the third antenna unit 14c may be of a symmetric structure, or a partially symmetric structure, or the same or similar structure, or different structures. In this embodiment, the fourth antenna unit 14d and the third antenna unit 14c are of a symmetric structure. Specifically, the fourth antenna unit 14d is symmetric with the third antenna unit 14c with respect to the first symmetry plane. Wherein, the central plane N1 is also the center line of the fourth antenna unit 14d and the third antenna unit 14c.

[0330] Exemplarily, the fourth antenna unit 14d and the second antenna unit 14b may be of a symmetric structure, or a partially symmetric structure, or the same or similar structure, or different structures. In this embodiment, the fourth antenna unit 14d and the second antenna unit 14b are of a symmetric structure. Specifically, the fourth antenna unit 14d is symmetric with the second antenna unit 14b with respect to the second symmetry plane. Wherein, the central plane N2 is also the center line of the second antenna unit 14b and the fourth antenna unit 14d.

[0331] Exemplarily, the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d may be of a central symmetric structure, or a partially central symmetric structure, or the same or similar structure, or different structures. In this embodiment, the first antenna unit 14a, the second antenna unit 14b, the third antenna unit 14c, and the fourth antenna unit 14d are centrally symmetric about the central axis. Wherein, the central axis is the intersection point of the central plane N1 and the central plane N2.

[0332] Please refer to again Fig.38 , a plurality of matching metal walls 15 are located at the periphery of the ground layer 12, that is, the plurality of matching metal walls 15 are arranged close to the edge of the ground layer 12. The plurality of matching metal walls 15 are arranged around the periphery of the ground layer 12.

[0333] Exemplarily, the number of the matching metal walls 15 is four. The four matching metal walls 15 are respectively located at the four corners of the ground layer 12. Exemplarily, each of the matching metal walls 15 is in an "L" shape or an arc shape.

[0334] It can be understood that by providing a plurality of spaced matching metal walls 15 on the ground layer 12, the matching metal walls 15 can increase the current path between the antenna element 14 and the ground layer 12. The matching metal walls 15 can be used to tune the impedance of the antenna structure 10 to achieve impedance matching. Additionally, since the matching metal walls 15 can increase the current path between the antenna element 14 and the ground layer 12, the sizes of the antenna element 14 and the ground layer 12 in this embodiment can be made smaller, thereby achieving miniaturization of the antenna structure 10.

[0335] In other embodiments, the antenna structure 10 of this embodiment can also refer to the setting manner of the antenna structure 10 in the second embodiment of the first embodiment. At this time, the current path of the antenna structure 10 can be arranged to be bent multiple times. Additionally, the antenna structure 10 further has a metal shorting hole group 19. At this time, the antenna structure 10 can further improve the bandwidth capacity and increase the notch points.

[0336] In other embodiments, the antenna structure 10 of this embodiment can also refer to the setting manner of the antenna structure 10 in the third embodiment of the first embodiment. For example, the antenna structure 10 further has a metal shorting hole group 19.

[0337] As described above, only the specific implementation manners of the present application are provided, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claimed rights.

Claims

1. An antenna structure, comprising a ground layer, a feeding unit, and an antenna unit, characterized in that: The number of the antenna units is four, and the four antenna units are arranged at intervals in 2 rows and 2 columns. The four antenna units are respectively a first antenna unit, a second antenna unit, a third antenna unit and a fourth antenna unit; Each of the four antenna units includes a first metal layer, a second metal layer, a first conductive member and a second conductive member. The first metal layer is disposed opposite to the ground layer and spaced apart from each other. The second metal layer is located between the first metal layer and the ground layer, and is spaced apart from both the first metal layer and the ground layer. The second metal layer includes a first region and a second region which are spaced apart. The first conductive member is connected between the first metal layer and the first region of the second metal layer, and the second conductive member is connected between the ground layer and the second region of the second metal layer; The feeding unit includes a feeding stub. A projection of a part of the feeding stub on the plane where the first metal layer is located is located within the first metal layer, and the feeding stub is used to feed the second metal layer and the first metal layer.

2. The antenna structure according to claim 1, characterized in that A first side of the first metal layer of the second antenna unit and a first side of the first metal layer of the first antenna unit form a first gap; A third side of the first metal layer of the third antenna unit and a third side of the first metal layer of the first antenna unit form a second gap; A first side of the first metal layer of the fourth antenna unit and a first side of the first metal layer of the third antenna unit form a third gap; and A third side of the first metal layer of the fourth antenna unit and a third side of the first metal layer of the second antenna unit form a fourth gap; Wherein, the fourth gap communicates with the first gap, the second gap and the third gap, and the first gap, the second gap, the third gap and the fourth gap form a "cross-shaped" gap.

3. The antenna structure according to claim 2, characterized in that The feeding stub includes a first feeding stub and a second feeding stub which are spaced apart; A projection of one end of the first feeding stub on the plane where the first metal layer of the first antenna unit is located is located within the first metal layer of the first antenna unit, and a projection of the other end of the first feeding stub on the plane where the first metal layer of the fourth antenna unit is located is located within the first metal layer of the fourth antenna unit; A projection of one end of the second feeding stub on the plane where the first metal layer of the second antenna unit is located is located within the first metal layer of the second antenna unit, and a projection of the other end of the second feeding stub on the plane where the first metal layer of the third antenna unit is located is located within the first metal layer of the third antenna unit.

4. The antenna structure according to claim 3, characterized in that The widths of the first gap, the second gap, the third gap and the fourth gap are all in the range of 0.03λ0 to 0.1λ0, where λ0 is the dielectric wavelength of the center frequency f0, and the center frequency f0 is the center frequency of the frequency range covered by the antenna structure.

5. The antenna structure according to claim 3, characterized in that The first feeding stub includes a first part, a second part, and a third part connected in sequence. At least a part of the first part of the first feeding stub is projected within the first metal layer of the first antenna unit in the plane where the first metal layer of the first antenna unit is located. At least a part of the third part of the first feeding stub is projected within the first metal layer of the fourth antenna unit in the plane where the first metal layer of the fourth antenna unit is located.

6. The antenna structure according to claim 5, characterized in that At least a part of the second part of the first feeding stub is projected within the "cross-shaped" slot in the plane where the first metal layer of the first antenna unit is located.

7. The antenna structure according to claim 3, characterized in that The first feeding stub includes a first part, a second part, a third part, a fourth part, and a fifth part connected in sequence. At least a part of the first part of the first feeding stub is projected within the first metal layer of the first antenna unit in the plane where the first metal layer of the first antenna unit is located. At least a part of the fifth part of the first feeding stub is projected within the first metal layer of the fourth antenna unit in the plane where the first metal layer of the fourth antenna unit is located.

8. The antenna structure according to claim 7, characterized in that At least a part of the second part, the third part, and the fourth part of the first feeding stub is projected within the "cross-shaped" slot in the plane where the first metal layer of the first antenna unit is located.

9. The antenna structure according to claim 7, characterized in that The distances between the first part of the first feeding stub and the ground layer, between the fifth part of the first feeding stub and the ground layer, and between the second feeding stub and the ground layer are all equal. The second part, the third part, and the fourth part of the first feeding stub are in a "U" shape, and the third part is located between the second feeding stub and the ground layer.

10. The antenna structure according to claim 3, characterized in that The second feeding stub includes a first part, a second part, and a third part connected in sequence. At least a part of the first part of the second feeding stub is projected within the first metal layer in the plane where the first metal layer of the third antenna unit is located. At least a part of the third part of the second feeding stub is projected within the first metal layer in the plane where the first metal layer of the second antenna unit is located.

11. The antenna structure according to claim 10, characterized in that At least a part of the second part of the second feeding stub is projected within the "cross-shaped" slot in the plane where the first metal layer of the first antenna unit is located.

12. The antenna structure according to claim 3, characterized in that The included angle between the extending direction of the first feeding stub and the first side of the first metal layer of the first antenna unit is 45°.

13. The antenna structure according to claim 12, characterized in that The included angle between the extending direction of the first feeding stub and the first side of the first metal layer of the fourth antenna unit is 45°.

14. The antenna structure according to claim 3, characterized in that The included angle between the extending direction of the second feeding stub and the first side of the first metal layer of the second antenna unit is 45°.

15. The antenna structure according to claim 14, wherein, The included angle between the extending direction of the second feeding stub and the first side of the first metal layer of the third antenna unit is 45°.

16. The antenna structure according to claim 3, wherein, The distance between the first feeding stub and the ground layer is greater than or less than the distance between the second feeding stub and the ground layer.

17. The antenna structure according to any one of claims 3 to 16, wherein, The first feeding stub is used to couple and feed the second metal layer of the first antenna unit, the first metal layer of the first antenna unit, the second metal layer of the fourth antenna unit, and the first metal layer of the fourth antenna unit; The second feeding stub is used to couple and feed the second metal layer of the second antenna unit, the first metal layer of the second antenna unit, the second metal layer of the third antenna unit, and the first metal layer of the third antenna unit.

18. The antenna structure according to any one of claims 3 to 16, wherein, The four antenna units have a center point, The second conductive member of the first antenna unit is located on the side of the first conductive member of the first antenna unit away from the center point, the second conductive member of the second antenna unit is located on the side of the first conductive member of the second antenna unit away from the center point, the second conductive member of the third antenna unit is located on the side of the first conductive member of the third antenna unit away from the center point, and the second conductive member of the fourth antenna unit is located on the side of the first conductive member of the fourth antenna unit away from the center point.

19. The antenna structure according to claim 18, wherein, A part of the feeding stub is located in the space surrounded by the second conductive members of the first antenna unit, the second conductive members of the second antenna unit, the second conductive members of the third antenna unit, and the second conductive members of the fourth antenna unit.

20. The antenna structure according to any one of claims 3 to 16, wherein, The four antenna units have a center point, The first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit are all symmetric structures, and the symmetry planes of the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit all pass through the center point; The extending direction of the first feeding stub is parallel to the symmetry planes of the first antenna unit and the fourth antenna unit, and the extending direction of the second feeding stub is parallel to the symmetry planes of the second antenna unit and the third antenna unit.

21. The antenna structure according to claim 3, wherein, The feeding unit further includes a first metal hole and a second metal hole arranged at intervals, the first metal hole is electrically connected to the first feeding stub, the second metal hole is electrically connected to the second feeding stub, wherein the projections of the first metal hole and the second metal hole on the plane where the first metal layer is located are located within the first metal layer.

22. The antenna structure according to claim 21, wherein, The grounding layer is provided with a first through hole and a second through hole arranged at intervals, the first metal hole is used to be electrically connected to the radio frequency circuit through the first through hole, and the second metal hole is used to be electrically connected to the radio frequency circuit through the second through hole.

23. The antenna structure according to claim 22, wherein, The first conductive member includes a plurality of first metal posts; The second conductive member includes a first metal connecting piece, a plurality of second metal posts, and a plurality of third metal posts. The first metal connecting piece is located between the second metal layer and the grounding layer. A plurality of the second metal posts are connected between the first metal connecting piece and the second region of the second metal layer, and a plurality of the third metal posts are connected between the first metal connecting piece and the grounding layer.

24. The antenna structure according to claim 23, wherein, A plurality of the third metal posts are arranged semi-surrounding the first through hole; a plurality of the third metal posts are arranged semi-surrounding the second through hole.

25. The antenna structure according to claim 23, wherein, The number of the first metal connecting pieces is one. The first metal connecting piece includes a first connecting portion and a second connecting portion connected to each other, and the first connecting portion and the second connecting portion form a bent shape.

26. The antenna structure according to claim 23, wherein, The diameter of the third metal column is greater than the diameter of the second metal column.

27. The antenna structure according to claim 23, wherein, A plurality of the first metal columns are arranged in an L shape or an arc shape, and / or the first metal connecting piece is in an L shape or an arc shape, and / or a plurality of the second metal columns are arranged in an L shape or an arc shape, and / or a plurality of the third metal columns are arranged in an L shape or an arc shape.

28. The antenna structure according to claim 23, wherein, The projection of the third metal column on the first metal connecting piece and the projection of the second metal column on the first metal connecting piece at least partially overlap.

29. The antenna structure according to claim 23, wherein, The first metal connecting piece includes a third region and a fourth region arranged at intervals; The second metal column is connected between the third region of the first metal connecting piece and the second region of the second metal layer, and the third metal column is connected between the fourth region of the first metal connecting piece and the ground layer.

30. The antenna structure according to claim 1, wherein, The first antenna unit, the second antenna unit, the third antenna unit and the fourth antenna unit have a centrosymmetric structure.

31. The antenna structure according to claim 1, wherein, The third antenna unit and the first antenna unit are in a symmetric structure, and the third antenna unit is symmetric with the first antenna unit about a second symmetry plane; The fourth antenna unit and the second antenna unit are in a symmetric structure, and the fourth antenna unit is symmetric with the second antenna unit about the second symmetry plane.

32. The antenna structure according to claim 1, wherein, The antenna structure further includes a plurality of metal shorting hole groups, and the plurality of metal shorting hole groups are electrically connected to the ground layer and are located around the first antenna unit, the second antenna unit, the third antenna unit and the fourth antenna unit; The first antenna unit and the second antenna unit form a first gap, and at least one of the metal shorting hole groups is arranged in the extending direction of the first gap. The first antenna unit and the third antenna unit form a second gap, and at least one of the metal shorting hole groups is arranged in the extending direction of the second gap. The third antenna unit and the fourth antenna unit form a third gap, and at least one of the metal shorting hole groups is arranged in the extending direction of the third gap. The fourth antenna unit and the second antenna unit form a fourth gap, and at least one of the metal shorting hole groups is arranged in the extending direction of the fourth gap.

33. The antenna structure according to claim 1, wherein, The antenna structure further includes a plurality of matching via groups, and the plurality of matching via groups are electrically connected to the ground layer. The plurality of matching via groups are located around the antenna unit, and the plurality of matching via groups are arranged to surround the antenna unit.

34. The antenna structure according to claim 1, wherein, The antenna structure further includes a dielectric layer, and the ground layer, the feeding unit and the antenna unit are all arranged on the dielectric layer.

35. The antenna structure according to claim 1, wherein, The antenna structure is an antenna for transmitting and receiving millimeter wave bands.

36. The antenna structure according to claim 35, wherein, The antenna structure is used to support frequency bands: n257, n258, n259, n260 and n261.

37. The antenna structure according to claim 35, wherein, The antenna structure operates within the ranges of 24.25 GHz - 29.5 GHz and 37 GHz - 43.5 GHz of the operating frequency band.

38. The antenna structure according to claim 1, wherein, Wherein, The projection of the first metal layer on the ground layer is located within the ground layer, and the projection of the second metal layer on the plane where the first metal layer is located is located within the first metal layer.

39. A chip, wherein, Including the antenna structure according to any one of claims 1 to 38, the chip further includes: A chip body and a packaging substrate, both the antenna structure and the chip body are disposed on the packaging substrate and electrically connected to the packaging substrate.

40. The chip according to claim 39, wherein, The chip body is a radio frequency transceiver chip, and the antenna structure is electrically connected to the radio frequency transceiver chip through the packaging substrate.

41. The chip according to claim 39 or 40, wherein, The chip further includes an injection molding part for encapsulating the antenna structure and the chip body.

42. An electronic device, wherein, Including the chip according to any one of claims 39 to 41.

43. The electronic device according to claim 42, wherein, It further includes a circuit board, and the chip is disposed on the circuit board.

44. The electronic device according to claim 43, wherein, The packaging substrate of the chip is electrically connected to the circuit board.

45. An electronic device, wherein, Including a radio frequency circuit and the antenna structure according to any one of claims 1 to 38, the radio frequency circuit is electrically connected to the feeding unit of the antenna structure.

46. The electronic device according to claim 45, wherein, It further includes a circuit board, and the antenna structure and the radio frequency circuit are disposed on the circuit board.

47. The electronic device according to claim 46, wherein, The antenna structure and the circuit board are of an integrally formed structure.

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