Cavity antenna assembly and communication equipment

Abstract

The utility model discloses a cavity antenna assembly and a communication device, belonging to the technical field of antennas, comprising two groups of cavity antennas, the two groups of cavity antennas are arranged in a mounting cavity with a gap, the two groups of cavity antennas are connected through a coaxial cable, each cavity antenna comprises a shell with a mounting groove, a support body and two conductive members, the supporting body comprises a frame body and an extension part connected with the frame body, at least part of the frame body is located in the mounting groove, and the extension part is located outside the mounting groove; the two conductive parts are arranged on the two sides of the shell respectively, the two conductive parts are located outside the mounting groove, and each conductive part comprises foam and a conductive layer wrapping the foam. According to the utility model, the technical effects of improved communication performance and high durability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of antennas, and in particular relates to a cavity antenna component and communication equipment. Background Art

[0002] With the rapid development of information technology, communication devices such as tablet computers and mobile phones play an increasingly important role in people's daily lives. As a key component for realizing wireless communication, WI FI antennas are directly related to the user's network experience. All-metal shell tablet computers can meet consumers' high requirements for the appearance and texture of communication equipment. In antenna technology, metal materials have a strong shielding effect on antenna signals. Cavity WI F IM I MO antennas have better signal receiving capabilities. When connected to the same network, they have stronger network grabbing capabilities and faster speeds, which will obviously bring a better WI FI speed experience. However, the current antennas cannot adapt to all-metal shell tablet computers, and the communication performance of the antennas is poor and the durability is low.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is the technical problem of poor communication performance and low durability.

[0005] In order to solve the above technical problems, the utility model provides a cavity antenna assembly, which includes: two groups of cavity antennas, the two groups of cavity antennas are arranged in an installation cavity with a gap, the two groups of cavity antennas are connected by a coaxial cable, the cavity antenna includes a shell with an installation groove, a support body, and two conductive parts, the support body includes a frame and an extension part connected to the frame, the frame is at least partially located in the installation groove, and the extension part is located outside the installation groove; the two conductive parts are respectively arranged on both sides of the shell, and the two conductive parts are located outside the installation groove, and the conductive parts include foam and a conductive layer wrapped in the foam.

[0006] Optionally, the cavity antenna assembly further includes: a shell and a display assembly, the shell and the display assembly enclose the installation cavity, the gap is formed between the shell and the display assembly, the gap is communicated with the installation cavity, the shell is made of metal, two groups of cavity antennas are coupled to the shell, so as to generate a resonant frequency range of 2.4GHZ to 2.5GHZ and a resonant frequency range of 5.15GHZ to 5.85GHZ in the gap, respectively, and the two groups of cavity antennas are respectively arranged on opposite side edges of the shell.

[0007] Optionally, the shell includes: a first side panel and a second side panel arranged opposite to each other, and a third side panel respectively connected to the first side panel and the second side panel, the first side panel, the second side panel and the third side panel enclose the mounting groove, the projection of the second side panel in the direction in which the second side panel approaches the first side panel is located on the first side panel, the frame is located between the first side panel and the second side panel, the two conductive members include a first conductive member and a second conductive member, the first conductive member is arranged on the first side panel, and the second conductive member is arranged on the second side panel.

[0008] Optionally, the first side panel includes: a first plate body, a second plate body and a third plate body, the second plate body is respectively connected to the first plate body and the third plate body, the third plate body is connected to the third side panel, the second plate body is recessed in a direction close to the second side panel, and the first plate body and the third plate body are located in the same plane.

[0009] Optionally, the first side plate includes: a first foam of the first conductive member is disposed on the second plate body, and a projection of the first plate body in the direction in which the first plate body approaches the third plate body in the first foam is located on the first foam.

[0010] Optionally, the number of the second conductive members is two, the second foams of the two second conductive members are arranged on the second side plate, a limiting groove for the coaxial cable to pass through is arranged on the third side plate, and the two second foams are symmetrically distributed relative to the limiting groove.

[0011] Optionally, the first conductive member is connected to the display assembly, and the first conductive member is located between the first side panel and the display assembly; the second conductive member is connected to the outer shell, and the second conductive member is located between the second side panel and the outer shell.

[0012] Optionally, the conductive layer is C-shaped, and the conductive layer is made of tin material.

[0013] Optionally, the extension portion includes a first support plate and a second support plate, the support body is connected to the first support plate and the second support plate respectively, the shell is located between the first support plate and the second support plate, and the frame includes a first side surface and a second side surface that are opposite to each other.

[0014] According to another aspect of the utility model, the utility model also provides a communication device, wherein the communication device is provided with the cavity antenna assembly.

[0015] Beneficial effects:

[0016] The utility model provides a cavity antenna assembly, which is achieved by arranging two groups of cavity antennas inside a mounting cavity, the mounting cavity having a gap, the two groups of cavity antennas being connected by a coaxial cable, the shell in the cavity antenna having a mounting groove, the extension of the support body in the cavity antenna being connected to the frame, the frame being at least partially located inside the mounting groove, the extension being located outside the mounting groove, two conductive members being respectively arranged on both sides of the shell, and the two conductive members being located outside the mounting groove, the conductive layer in the conductive member being wrapped on the foam. In this way, the two groups of cavity antennas are connected by a coaxial cable to form a stable signal transmission channel, the support body providing support and limiting for the shell, and the two groups of cavity antennas will resonate in the gap. Furthermore, the shell is fixed and signal transmission is realized by the conductive member, and the buffering effect of the foam can also reduce the damage to the antenna assembly caused by external impact, thereby improving durability. Thus, a technical effect of improving communication performance and high durability is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a cavity antenna assembly provided by an embodiment of the present invention;

[0019] Figure 2 A schematic structural diagram of a first groove in a cavity antenna assembly provided by an embodiment of the present invention;

[0020] Figure 3 A schematic structural diagram of a second groove in a cavity antenna assembly provided by an embodiment of the present invention;

[0021] Figure 4 A schematic structural diagram of an extension portion in a cavity antenna assembly provided by an embodiment of the present invention;

[0022] Figure 5 A schematic structural diagram of a shell in a cavity antenna assembly provided by an embodiment of the present invention;

[0023] Figure 6 A schematic structural diagram of a first side plate in a cavity antenna assembly provided by an embodiment of the present invention;

[0024] Figure 7 A schematic structural diagram of a second side surface of a cavity antenna assembly provided by an embodiment of the present invention;

[0025] Figure 8A schematic structural diagram of a first conductive member in a cavity antenna assembly provided by an embodiment of the present invention;

[0026] Fig. 9 A schematic structural diagram of a second conductive member in a cavity antenna assembly provided by an embodiment of the present invention;

[0027] Fig.10 A schematic diagram of the structure of a communication device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application are explained and described below.

[0030] Parallel: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, which allows for non-absolute parallelism due to factors such as assembly tolerance, design tolerance, and the influence of structural flatness. Small angular errors are allowed. For example, an assembly error range of less than 10 degrees can be understood as a parallel relationship.

[0031] Vertical: The verticality defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and influence of structural flatness. It also allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0032] Connected / connected: can refer to a mechanical connection relationship or a physical connection relationship, that is, A and B are connected or A and B are connected, which can mean that there is a fastening component (such as screws, bolts, rivets, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0033] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by coupling between the gaps between two conductive parts to form an equivalent capacitor.

[0034] Connection: The above-mentioned "electrical connection" or "indirect coupling" method is used to make two or more components conductive or connected to each other for signal / energy transmission, which can be called connection.

[0035] Working frequency band, or simply frequency band: The antenna module belongs to the RF system. The RF system needs to work within a certain frequency range to communicate with other devices. The frequency range of the RF system is called the working frequency band.

[0036] Working resonance, or simply resonance: refers to the resonance generated by the antenna unit in the working frequency band.

[0037] Resonant frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces "resonance", where the resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can generate a corresponding fundamental mode resonance.

[0038] Resonance frequency band: The range of the resonance frequency is the resonance frequency band, and the resonance frequency band and the working frequency band may be the same or partially overlap. In one embodiment, one or more resonance frequency bands of the antenna may cover one or more working frequency bands of the antenna.

[0039] Ground state: corresponds to a section of a radiator, or a radiator in a certain antenna mode, the lowest frequency resonance. Among them, "ground state position" or "ground state resonant frequency" refers to the frequency range or resonant frequency corresponding to the ground state of the radiator in a specific antenna mode (for example, the lowest frequency resonance). The "resonance" in the embodiments of the present application refers to the resonance in the ground state, or the resonance generated by the fundamental mode.

[0040] The size of the cavity antenna 1 component: refers to the span size of the cavity inside the cavity antenna 1 component in different directions, where the cavity size refers to the size of the cavity formed by the conductive surface. For example, when the cavity is a rectangular parallelepiped, the antenna size can be the three span sizes of the length, width and height of the rectangular parallelepiped; when the cavity is a cylinder, the antenna size is the diameter and height of the cylinder; when the cavity is an irregular shape, the antenna size can be the maximum span size in three directions in a three-dimensional rectangular system.

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0042] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0043] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the present application include a particular feature, structure or characteristic described in conjunction with the embodiment. Thus, in this specification, the terms "include", "comprises", "has" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0044] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0045] In addition, in the present application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to the changes in the orientation of the components in the drawings.

[0046] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] When used in this application, “within the range of…”, unless it is separately specified that an end value is not included, it is assumed that both end values ​​of the range are included. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0048] The present application provides a cavity antenna 1 component, which is suitable for use in electronic devices to radiate and receive electromagnetic waves. The electronic devices may be mobile phones, tablet computers, car computers, smart wearable products, Internet of Things (IoT), etc. The embodiments of the present application do not impose any special restrictions on the specific form of the above electronic devices.

[0049] A cavity antenna 1 component provided in the first embodiment of the present invention is shown in FIG. Figures 1 to 10 As shown, Figure 1 is a schematic structural diagram of a cavity antenna 1 component provided by an embodiment of the present invention, Figure 2 is a structural schematic diagram of a first groove 1131 in a cavity antenna 1 component provided by an embodiment of the present invention, Figure 3 is a schematic structural diagram of a second groove 1132 in a cavity antenna 1 assembly provided by an embodiment of the present invention, Figure 4 1 is a schematic structural diagram of an extension portion 112 in a cavity antenna 1 assembly provided by an embodiment of the present invention. Figure 5 is a schematic structural diagram of a housing 12 in a cavity antenna 1 assembly provided by an embodiment of the present invention. Figure 6 is a schematic structural diagram of a first side plate 122 in a cavity antenna 1 assembly provided by an embodiment of the present invention, Figure 7 is a structural schematic diagram of a second side surface 1112 in a cavity antenna 1 component provided by an embodiment of the present invention, Figure 8 1 is a schematic structural diagram of a first conductive member 131 in a cavity antenna 1 assembly provided by an embodiment of the present invention. Fig. 9 1 is a schematic structural diagram of a second conductive member 132 in a cavity antenna 1 assembly provided by an embodiment of the present invention. Fig.10 It is a structural schematic diagram of a communication device 4 provided by an embodiment of the present invention. A cavity antenna 1 assembly provided by the first embodiment of the present invention includes two groups of cavity antennas 1, the two groups of cavity antennas 1 are arranged inside the installation cavity, the installation cavity has a gap 32, the two groups of cavity antennas 1 are connected by a coaxial cable 2, the cavity antenna 1 includes a support body, a shell 12 and two conductive parts, the shell 12 has a mounting groove 121, the support body includes a frame 111 and an extension 112, the extension 112 is connected to the frame 111, the frame 111 is at least partially located inside the mounting groove 121, the extension 112 is located outside the mounting groove 121, and a plurality of evenly distributed grooves are provided on the frame 111. Two conductive parts are respectively arranged on both sides of the shell 12, and the two conductive parts are located outside the mounting groove 121, the conductive parts include foam and a conductive layer 133, and the conductive layer 133 is wrapped on the foam.

[0050] Among them, the two groups of cavity antennas 1 can be cavity WI F IM I MO antennas. The use of MIMO antennas combined with the characteristics of cavity antennas 1 can provide higher data transmission rates, more reliable transmission performance, wider coverage, and stronger signal reception capabilities. The mounting slot 121 of the shell 12 in the cavity antenna 1 has a space inside to accommodate the frame 111 in the support body. The frame 111 of the support body extends into the mounting slot 121, providing a stable support and limit for the shell 12. The extension portion 112 of the support body is located outside the mounting slot 121, which is convenient for connection and fixation with other components.

[0051] Among them, multiple grooves are evenly distributed on the frame 111, which can not only make the stress more evenly distributed on the frame 111 when subjected to external force or temperature changes, effectively resist deformation, but also increase the surface area of ​​the frame 111, improve heat dissipation efficiency, and reduce deformation caused by temperature changes.

[0052] Among them, the two conductive parts are respectively located on the upper side and the lower side of the shell 12. The upper side of the shell 12 may also be provided with an antenna module. It can be understood by those skilled in the art that the antenna module is used to receive radio waves and transmit signals at the same time. The conductive layer 133 is wrapped around the periphery of the foam, and the conductive layer 133 is connected to the shell 12. Through the combination of the foam and the conductive layer 133, the shell 12 is fixed and the smooth transmission of the signal is ensured. The buffering effect of the foam can also effectively reduce the damage to the antenna assembly caused by external impact and improve the durability of the entire assembly.

[0053] Among them, two groups of cavity antennas 1 are connected to each other through a coaxial cable 2, and the impedance range of the coaxial cable 2 is 48Ω to 52Ω, that is, the impedance of the coaxial cable 2 is in the range of 48Ω to 52Ω, the maximum operating voltage can be 1000V, and the maximum operating frequency is 6GHZ, which helps to ensure the stability of the signal during transmission and reduce reflections. It can be used in occasions requiring high voltage transmission and supports high-speed data transmission and broadband communication.

[0054] In this embodiment, two groups of cavity antennas 1 are arranged inside the installation cavity, that is, the size of the internal space of the installation cavity is larger than the size of the cavity antenna 1 component, the installation cavity has a gap 32, the two groups of cavity antennas 1 are connected by a coaxial cable 2, the shell 12 in the cavity antenna 1 has a mounting groove 121, the extension 112 of the support body in the cavity antenna 1 is connected to the frame 111, the frame 111 is at least partially located inside the mounting groove 121, the extension 112 is located outside the mounting groove 121, and a plurality of evenly distributed grooves are arranged on the frame 111, two conductive members are respectively arranged on both sides of the shell 12, and the two conductive members are located outside the mounting groove 121, and the conductive layer 133 in the conductive member is wrapped on the foam. In this way, the two groups of cavity antennas 1 are connected by the coaxial cable 2 to form a stable signal transmission channel, the support body provides support and limit for the shell 12, and the two groups of cavity antennas 1 will resonate in the gap 32. At the same time, when subjected to external forces or temperature changes, the multiple grooves provided on the frame 111 will allow the stress to be more evenly distributed on the frame 111 to effectively resist deformation. The multiple grooves will also increase the surface area of ​​the frame 111, improve the heat dissipation efficiency, and reduce deformation caused by temperature changes. In addition, the housing 12 is fixed and signal transmission is achieved through the conductive member, and the buffering effect of the foam can also reduce the damage to the antenna assembly caused by external impact and improve durability. Thus, the technical effect of improving communication performance and high durability is achieved.

[0055] As an implementation, see Figures 4 to 10 The cavity antenna 1 assembly includes a housing 3 and a display assembly 31, the display assembly 31 includes a display screen, the housing 3 and the display assembly 31 together enclose the above-mentioned installation cavity, an assembly gap is formed between the housing 3 and the display assembly 31, the assembly gap is the above-mentioned gap 32, the gap 32 is interconnected with the installation cavity, so that electromagnetic waves can propagate in the gap 32. The housing 3 is made of metal material to enhance the strength of the housing 3 structure and the electromagnetic shielding performance. Two groups of cavity antennas 1 are respectively arranged on opposite side edges of the shell 3, that is, two groups of cavity antennas 1 are respectively arranged on two opposite sides of the shell 3, and the two groups of cavity antennas 1 are coupled with the shell 3 to generate resonance in a specific frequency range in the gap 32, which are 2.4GHZ to 2.5GHZ, and 5.15GHZ to 5.85GHZ, respectively. That is, one group of cavity antennas 1 generates resonance in the range of 2.4GHZ to 2.5GHZ in the gap 32, and the other group of cavity antennas 1 generates resonance in the range of 5.15GHZ to 5.85GHZ in the gap 32. The two groups of cavity antennas 1 resonate in different frequency ranges and can work simultaneously without mutual interference, allowing multi-band operation to be achieved on the same device, so that the device can flexibly adapt to different application scenarios and needs, thereby optimizing the propagation path of electromagnetic waves, improving signal quality and coverage, and helping to improve communication performance.

[0056] In some embodiments, the housing 12 includes a first side plate 122, a second side plate 123, and a third side plate 124, and the first side plate 122, the second side plate 123, and the third side plate 124 can be integrally formed. The first side plate 122 and the second side plate 123 are arranged opposite to each other, that is, the first side plate 122 is located at the top, and the second side plate 123 is located at the bottom. The third side plate 124 is connected to the first side plate 122 and the second side plate 123 respectively, and the first side plate 122, the second side plate 123, and the third side plate 124 jointly enclose the above-mentioned mounting groove 121, and the interior of the mounting groove 121 can be used to accommodate the frame 111. In the direction close to the first side plate 122, the projection part of the second side plate 123 is located on the first side plate 122, which is conducive to enhancing the compactness of the structure. The frame 111 is located between the first side plate 122 and the second side plate 123, and the frame 111 can provide support for the entire structure. The two conductive members are a first conductive member 131 and a second conductive member 132. The first conductive member 131 is disposed on the first side plate 122 of the shell 12, and the second conductive member 132 is disposed on the second side plate 123 of the shell 12. The first conductive member 131 and the second conductive member 132 are used to fix the shell 12 and for signal transmission.

[0057] In some embodiments, the first side plate 122 includes a first plate 1221, a second plate 1222, and a third plate 1223, and the first plate 1221, the second plate 1222, and the third plate 1223 can be integrally formed. The second plate 1222 is connected to the first plate 1221 and the third plate 1223, respectively, and the third plate 1223 is connected to the third side plate 124 to form a side plate structure with a specific shape. Among them, the second plate 1222 is recessed in a direction close to the second side plate 123, that is, it is recessed in a direction perpendicular to the second side plate 123. The first plate 1221 and the third plate 1223 are both located in the same plane, that is, the first plate 1221 and the third plate 1223 are parallel to each other. The first plate 1221, the second plate 1222 and the third plate 1223 are formed in a concave space on the second plate 1222. The concave space can be used to install the first conductive member 131. A portion of the first conductive member 131 is located inside the concave space, and another portion of the first conductive member 131 is located outside the concave space. The first foam 1311 of the first conductive member 131 is disposed on the second plate 1222. In the direction from the first plate 1221 to the third plate 1223, the projection of the first plate 1221 on the first foam 1311 is located on the first foam 1311, that is, the first foam 1311 partially extends out of the concave space, and the portion extending out of the concave space is at the top of the first plate 1221, so that the first foam 1311 and the display assembly 31 are in contact with each other.

[0058] As an implementation mode, the number of the second conductive members 132 can be two, the second foam 1321 of the second conductive member 132 is arranged on the second side plate 123, and a limiting groove 1241 is arranged on the third side plate 124, and the limiting groove 1241 is used for the coaxial cable 2 to pass through. The two second foams 1321 are symmetrically distributed relative to the limiting groove 1241, that is, the two second foams 1321 are arranged on the second side plate 123, the two second foams 1321 are symmetrically distributed relative to the limiting groove 1241, and the outer peripheries of the two second foams 1321 are both wrapped with a conductive layer 133, which helps to reduce signal interference and improve communication quality.

[0059] As an implementation mode, the first conductive member 131 is connected to the display assembly 31 and grounded. The first conductive member 131 is located between the first side plate 122 and the display assembly 31, which helps to achieve stable signal transmission. The second conductive member 132 is connected to the housing 3. The second conductive member 132 is located between the second side plate 123 and the housing 3. The first side plate 122 and the display assembly 31 are connected by the first conductive member 131, and the second side plate 123 and the housing 3 are connected by the second conductive member 132, which can enhance the structural stability of the entire assembly. The first conductive member 131 and the second conductive member 132 can not only achieve stable signal transmission, but also enhance the durability of the assembly, which is conducive to improving communication performance.

[0060] As another embodiment, the conductive layer 133 can be C-shaped, that is, the conductive layer 133 as a whole is open on one side, and the conductive layer 133 is made of tin material, that is, the first conductive member 131 is a half-tin-plated foam structure, and the second conductive member 132 is also a half-tin-plated foam structure. The conductive layer 133 being C-shaped helps to enhance the conductivity, and at the same time enables the conductive layer 133 to fit more closely on the foam, thereby improving the stability and durability of the entire conductive member. Tin material has good conductivity and ductility. The conductive layer 133 is made of tin material, which can meet the requirements of the conductive layer 133 for conductivity and structural stability. By adopting a C-shaped conductive layer 133, signal transmission can be effectively achieved, and the fixed connection with the housing 12 is also enhanced.

[0061] In some embodiments, the extension portion 112 includes a first support plate 1121 and a second support plate 1122, the first support plate 1121 is connected to one end of the support body, and the second support plate 1122 is connected to the other end of the support body. The first support plate 1121, the second support plate 1122 and the support body can be integrally formed, and the first support plate 1121 and the second support plate 1122 respectively provide stable support for the frame body 111. The first support plate 1121 and the second support plate 1122 can also be provided with mounting holes respectively. The housing 12 is located between the first support plate 1121 and the second support plate 1122, which helps to protect the housing 12 and prevent the housing 12 from being damaged by external impact. The frame body 111 includes a first side surface 1111 and a second side surface 1112, and the first side surface 1111 and the second side surface 1112 are two surfaces opposite to each other. The plurality of grooves include a plurality of first grooves 1131 and a plurality of second grooves 1132, and the plurality of first grooves 1131 are provided on the first side surface 1111 and are located inside the mounting groove 121. Multiple second grooves 1132 are arranged on the second side 1112 and are located outside the mounting groove 121, so that the grooves can be distributed at different positions of the frame 111, more effectively resisting deformation caused by external forces and temperature changes, and improving the structural stability of the entire assembly.

[0062] In some embodiments, the plurality of first grooves 1131 are close to one end of the support body, and the plurality of second grooves 1132 are close to the other end of the support body, that is, the plurality of first grooves 1131 and the plurality of second grooves 1132 are respectively located at the two ends, and the first grooves 1131 and the second grooves 1132 do not overlap in the direction perpendicular to the first side plate 122, so that the stress can be more evenly distributed on the frame 111, which is conducive to enhancing the structural strength of the frame 111. At the same time, the first grooves 1131 are recessed from the first side surface 1111 to the direction close to the second side surface 1112, and the second grooves 1132 are recessed from the second side surface 1112 to the direction close to the first side surface 1111, which can increase the surface area of ​​the frame 111, improve the heat dissipation efficiency, help reduce the deformation caused by temperature changes, and further improve the structural stability and durability of the cavity antenna 1 component.

[0063] In order to explain in detail a communication device 4 provided by the present invention, the above-mentioned embodiment 1 explains in detail a cavity antenna 1 component. Based on the same inventive concept, the present application also provides a communication device 4, as detailed in the following embodiment 2.

[0064] Embodiment 2 of the present invention provides a communication device 4, and the communication device 4 is provided with the cavity antenna 1 assembly. The communication device 4 mainly includes a housing 3 and a display assembly 31. The housing 3 may include a middle frame and a back cover. The middle frame and the back cover may be integrally formed. The middle frame is connected to the display assembly 31, and the gap 32 is located between the middle frame and the display assembly 31. The display assembly 31 is used to display images. In some embodiments of the present application, the display assembly 31 includes a liquid crystal display module and a backlight module. Alternatively, in other embodiments of the present application, the display assembly 31 may be an organic light emitting diode display screen. A conductive coating is provided on the inner side of the display assembly 31 facing the housing 3. The conductive coating may be a metal material, or may be a shielding layer of the display assembly 31, which is used to protect the display assembly 31 from interference from other devices in the communication device 4.

[0065] The display component 31 and the housing 3 together constitute a conductive housing 12, and the housing 3 and the display component 31 together enclose a dielectric cavity of the communication device 4. In a specific embodiment, the housing 3 is an integrated metal structure. In other embodiments, the housing 3 may also include a non-metallic body, which may be made of non-metallic materials such as plastic, and a metal layer is provided on the inner side of the non-metallic body of the housing 3, and the metal layer may be a partial area of ​​the housing 3, for example, an edge area of ​​the housing 3.

[0066] When the communication device 4 is provided with a middle frame (not shown in the figure), the middle frame includes a conductive frame. In some embodiments, the conductive frame can be a conductive frame formed integrally on the middle frame body. It should be understood that in other embodiments, the conductive frame and the middle frame body can also be independent of each other, for example, the conductive frame and the middle frame body can be formed separately using different materials, for example, the conductive frame is formed of a conductive material, and the middle frame body is formed of a non-conductive material.

[0067] In one embodiment, in the mobile phone, there is an assembly gap between the display component 31 and the housing 3 , and the assembly gap is an inevitable gap 32 formed when the two components are assembled, and electromagnetic waves can enter the interior of the mobile phone through the gap 32 .

[0068] In one embodiment, this embodiment can also be applied to a communication device 4 such as a tablet computer, in which a display component 31 and a housing 3 are also provided, and the gap 32 can also include a structural gap between the display component 31 and the housing 3 to achieve radiation and reception of dual-band signals. The two groups of cavity antennas 1 described in this embodiment are respectively provided on both sides of the housing 3 of the tablet computer.

[0069] In a possible implementation, based on the structure of the cavity antenna 1 component described above, this implementation proposes an application of a cavity antenna 1 component in a communication device 4. Wherein, the communication device 4 can be a laptop computer, a desktop computer or an all-in-one computer. This implementation takes a laptop computer as an example. The laptop computer described in this implementation may include the cavity antenna 1 component described in any of the above implementations. For example, the gap 32 in the laptop computer is utilized, and the gap 32 includes an assembly gap between the display component 31 and the metal back shell to achieve the radiation and reception of dual-band signals. Electronic components such as circuit boards are installed in the space between the display component 31 and the metal back shell. The metal back shell is made of metal material, or a metal layer is attached to the inner side of the display component 31 and the metal back shell. The two groups of cavity antennas 1 described in this implementation are respectively arranged on both sides of the metal back shell in the laptop computer.

[0070] In a possible implementation, based on the structure of the cavity antenna 1 component described above, this implementation proposes an application of the cavity antenna 1 component in a communication device 4. The communication device 4 may be an electronic device having a circuit board. Or the communication device 4 may be an electronic device having a circuit board, and the electronic device includes a keyboard. The cavity antenna 1 component described in the above implementation may be applied to any electronic device having the circuit board.

[0071] The present invention provides a communication device 4, which is provided with the cavity antenna 1 assembly, wherein two groups of cavity antennas 1 are arranged inside the mounting cavity, the mounting cavity has a gap 32, the two groups of cavity antennas 1 are connected by a coaxial cable 2, the housing 12 in the cavity antenna 1 has a mounting groove 121, the extension 112 of the support body in the cavity antenna 1 is connected to the frame 111, the frame 111 is at least partially located inside the mounting groove 121, the extension 112 is located outside the mounting groove 121, a plurality of grooves evenly distributed are provided on the frame 111, two conductive members are respectively arranged on both sides of the housing 12, and the two conductive members are located outside the mounting groove 121, and the conductive layer 133 in the conductive member is wrapped on the foam. In this way, the two groups of cavity antennas 1 are connected by the coaxial cable 2 to form a stable signal transmission channel, the support body provides support and limit for the housing 12, and the two groups of cavity antennas 1 will resonate in the gap 32. At the same time, when subjected to external forces or temperature changes, the multiple grooves provided on the frame 111 will allow the stress to be more evenly distributed on the frame 111 to effectively resist deformation. The multiple grooves will also increase the surface area of ​​the frame 111, improve the heat dissipation efficiency, and reduce deformation caused by temperature changes. In addition, the housing 12 is fixed and signal transmission is achieved through the conductive member, and the buffering effect of the foam can also reduce the damage to the antenna assembly caused by external impact and improve durability. Thus, the technical effect of improving communication performance and high durability is achieved.

[0072] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A cavity antenna assembly, It is characterized in that The cavity antenna assembly includes: two groups of cavity antennas, the two groups of cavity antennas are arranged in an installation cavity with a gap, the two groups of cavity antennas are connected by a coaxial cable, the cavity antenna includes a shell with a mounting groove, a support body, and two conductive parts, the support body includes a frame and an extension part connected to the frame, the frame is at least partially located in the mounting groove, and the extension part is located outside the mounting groove; the two conductive parts are respectively arranged on both sides of the shell, and the two conductive parts are located outside the mounting groove, and the conductive parts include foam and a conductive layer wrapped in the foam.

2. The cavity antenna assembly according to claim 1, It is characterized in that The cavity antenna assembly also includes: a shell and a display assembly, the shell and the display assembly enclose the installation cavity, the gap is formed between the shell and the display assembly, the gap is communicated with the installation cavity, the shell is made of metal material, two groups of cavity antennas are coupled to the shell, so that the resonant frequency range generated in the gap is 2.4GHZ to 2.5GHZ, and the resonant frequency range is 5.15GHZ to 5.85GHZ, respectively, and the two groups of cavity antennas are respectively arranged on the opposite side edges of the shell.

3. The cavity antenna assembly according to claim 2, It is characterized in that The shell includes: a first side plate and a second side plate arranged opposite to each other, and a third side plate connected to the first side plate and the second side plate respectively, the first side plate, the second side plate and the third side plate enclose the mounting groove, the projection of the second side plate in the direction in which the second side plate approaches the first side plate is located on the first side plate, the frame is located between the first side plate and the second side plate, the two conductive members include a first conductive member and a second conductive member, the first conductive member is arranged on the first side plate, and the second conductive member is arranged on the second side plate.

4. The cavity antenna assembly according to claim 3, It is characterized in that The first side panel includes: a first panel, a second panel and a third panel, the second panel is connected to the first panel and the third panel respectively, the third panel is connected to the third side panel, the second panel is recessed toward the second side panel, and the first panel and the third panel are located in the same plane.

5. The cavity antenna assembly according to claim 4, It is characterized in that The first side plate includes: a first foam of the first conductive member is disposed on the second plate body, and a projection of the first plate body in the direction in which the first plate body approaches the third plate body in the first foam is located on the first foam.

6. The cavity antenna assembly according to claim 3, Features: There are two second conductive members, and the second foams of the two second conductive members are arranged on the second side plate. A limiting groove for the coaxial cable to pass through is arranged on the third side plate, and the two second foams are symmetrically distributed relative to the limiting groove.

7. The cavity antenna assembly according to claim 3, Features: The first conductive member is connected to the display assembly and is located between the first side plate and the display assembly. The second conductive member is connected to the housing and is located between the second side plate and the housing.

8. The cavity antenna assembly according to claim 1, Features: The conductive layer is C-shaped and is made of tin material.

9. The cavity antenna assembly according to claim 1, Features: The extension portion includes a first support plate and a second support plate, the support body is connected to the first support plate and the second support plate respectively, the shell is located between the first support plate and the second support plate, and the frame includes a first side surface and a second side surface that are opposite to each other.

10. A communication device, It is characterized in that The communication device is provided with a cavity antenna assembly as described in any one of claims 1 to 9.

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