Antenna assembly and electronic equipment

Abstract

The utility model relates to an antenna assembly and electronic equipment, the antenna assembly comprises a cavity reflection structure and a radiator, the cavity reflection structure comprises a first steel sheet of the electronic equipment and a second steel sheet arranged on the first steel sheet, and the first steel sheet and the second steel sheet are connected through a plurality of grounding pieces; the plurality of grounding pieces enable the cavity reflection structure to form a cavity opening for outward radiation of energy; the projection of the radiator in the direction of the first steel sheet is at least partially located in the cavity opening. According to the technical scheme, the antenna performance is improved, and meanwhile additional design space is not increased.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic devices, and in particular to an antenna assembly and an electronic device. Background Art

[0002] With the development of communication technology, terminal devices represented by mobile phones are integrating more and more frequency bands and containing more and more antennas. How to improve antenna performance without increasing additional design space has become a technical problem that designers need to solve. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides an antenna assembly and a terminal device.

[0004] According to a first aspect of an embodiment of the present disclosure, an antenna assembly is provided, comprising a cavity reflection structure and a radiator, wherein: the cavity reflection structure comprises a first steel sheet of an electronic device and a second steel sheet arranged on the first steel sheet, the first steel sheet and the second steel sheet are connected by a plurality of grounding members, and the plurality of grounding members form a cavity opening in the cavity reflection structure for radiating energy outward; and a projection of the radiator in the direction of the first steel sheet is at least partially located within the cavity opening.

[0005] Optionally, the cavity opening is a rectangular waveguide cavity.

[0006] Optionally, the grounding member includes a first grounding member and a second grounding member extending along a first direction and a third grounding member extending along a second direction, the first direction and the second direction being perpendicular, wherein the first grounding member and the second grounding member are spaced apart in the second direction, and the third grounding member is located at one end of the first grounding member and the second grounding member along the first direction to form the cavity opening at the other end of the first grounding member and the second grounding member along the first direction.

[0007] Optionally, the working mode of the cavity reflection structure is TE 10 , the length of the cavity opening in the first direction and the length in the second direction satisfy: , wherein L1 is the length of the cavity opening in the first direction, and L2 is the length of the cavity opening in the second direction, is the medium wavelength.

[0008] Optionally, the length of the cavity opening in the first direction and the length of the cavity opening in the second direction satisfy: .

[0009] Optionally, the grounding element is a grounding foam or a grounding spring.

[0010] According to a second aspect of an embodiment of the present disclosure, an electronic device is further provided, comprising any one of the above antenna components.

[0011] Optionally, the first steel sheet is a display module steel sheet, and / or the second steel sheet is a bracket steel sheet.

[0012] Optionally, the electronic device further includes a metal back cover, wherein a decorative piece having an opening is provided on the metal back cover at a position corresponding to the camera module, and the antenna assembly is provided in the decorative piece.

[0013] Optionally, the decorative piece is a metal annular component, and a side of the radiator close to the decorative piece is provided with a chamfered edge.

[0014] Optionally, the beveled edge has a cutting angle of 45°.

[0015] Optionally, the length of the beveled edge is ,in, is the medium wavelength.

[0016] Optionally, the radiator is an FPC antenna.

[0017] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the antenna assembly provided by the present disclosure includes a cavity reflection structure and a radiator, the cavity reflection structure is formed with a cavity opening, and the projection of the radiator in the direction of the first steel sheet is at least partially located in the cavity opening, so that the energy reflected by the cavity reflection structure and the energy emitted by the radiator can be radiated in the same direction, forming an aperture superposition, thereby improving the radiation efficiency of the antenna. At the same time, the cavity reflection structure in the present disclosure is formed with the help of the first steel sheet and the second steel sheet of the electronic device, and the cavity opening of the cavity reflection structure is defined by the grounding piece between the first steel sheet and the second steel sheet. The first steel sheet and the second steel sheet are both original structures of the electronic device. For example, the first steel sheet can be a display module steel sheet, and the second steel sheet can be a bracket steel sheet. That is, the cavity reflection structure of the present disclosure is formed with the help of the original structure of the electronic device, without adding additional design space, thereby achieving the purpose of improving antenna performance while not adding additional design space.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] Figure 1 The figure is a top view of a terminal device according to an exemplary embodiment.

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure of the terminal device after omitting the radiator.

[0022] Figure 3 The figure is a partially enlarged view of a terminal device at a radiator according to an exemplary embodiment.

[0023] Description of Reference Numerals

[0024] 1- cavity reflection structure, 11- first steel sheet, 12- second steel sheet, 13- grounding piece, 131- first grounding piece, 132- second grounding piece, 133- third grounding piece, 14- cavity opening, 2- radiator, 21- beveled edge, 3- decorative piece. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0026] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0027] like Figure 1 and Figure 2 As shown, according to the first aspect of an embodiment of the present disclosure, an antenna assembly is provided, which can be applied to electronic devices, where the electronic devices include but are not limited to portable mobile devices such as mobile phones and tablets and non-mobile devices such as computers. Specifically, the antenna assembly includes a cavity reflection structure 1 and a radiator 2. Wherein: the cavity reflection structure 1 includes a first steel sheet 11 of the electronic device and a second steel sheet 12 arranged on the first steel sheet 11, the first steel sheet 11 and the second steel sheet 12 are connected by a plurality of grounding members 13, and the plurality of grounding members 13 form a cavity opening 14 in the cavity reflection structure 1 for radiating energy outward; the projection of the radiator 2 in the direction of the first steel sheet 11 is at least partially located in the cavity opening 14.

[0028] The present disclosure does not limit the form of the radiator 2. As long as it can be excited to generate a radiation signal, for example, the radiator 2 can be an FPC antenna, or other antennas formed by etching (LDS) on a dielectric substrate, etc., which can be applied to the present disclosure.

[0029] In order to improve the radiation efficiency of the radiator 2, the antenna assembly disclosed in the present invention also includes a cavity reflection structure 1. This cavity reflection structure 1 is compared with a plane reflection structure. In a plane reflection structure, the directionality of antenna radiation is poor, resulting in radiation energy loss. The cavity reflection structure 1 can be regarded as a cavity with only one side open, so that it can guide the direction of energy radiation. When the projection of the radiator 2 is at least partially located in the cavity opening 14, the energy below the radiator 2 can be reflected back by the cavity reflection structure 1 and can be superimposed with the energy above the radiator 2 to achieve the purpose of signal gain. While improving the radiation efficiency of the radiator 2, the radiation pattern distribution of the antenna of the whole machine is more balanced, and users can get a good WiFi and BT experience in every direction when using it.

[0030] Considering the increasing number of antennas in terminal devices, if a cavity is formed by adding an additional metal frame, the limited design space will undoubtedly be further aggravated. The cavity reflection structure 1 disclosed in the present invention can be formed with the help of the original structure of the terminal device. That is, the cavity reflection structure 1 includes a first steel sheet 11 and a second steel sheet 12. For example, the first steel sheet 11 can be a display module steel sheet, and the second steel sheet 12 can be a bracket steel sheet, wherein the display module steel sheet is a metal frame used to support and fix the display module, usually arranged in the non-display area of ​​the display module, and the bracket steel sheet is connected to the display module steel sheet through a grounding structure, and is used to install electronic modules such as camera modules and speakers. It should be understood that the present disclosure is not intended to limit the first steel sheet 11 and the second steel sheet 12. Any original metal structure in any electronic device can be applied to the present disclosure as long as it is suitable for forming a cavity reflection structure.

[0031] Taking the first steel sheet 11 as the display module steel sheet and the second steel sheet 12 as the bracket steel sheet as an example, the present invention uses the metal materials of the display module steel sheet and the bracket steel sheet to shield the radiation signal. The display module steel sheet serves as a reflective array, and the shape and radiation direction of the cavity opening 14 are limited by reasonably setting the grounding piece 13.

[0032] That is, the cavity reflection structure 1 disclosed in the present invention can not only achieve the gain effect on the radiation energy of the radiator 2 by superimposing the apertures, but also be formed with the help of the original structure of the terminal device without adding additional design space, thereby achieving the purpose of improving the antenna performance without adding additional design space.

[0033] The cavity opening 14 can be a rectangular waveguide cavity, for example, its working mode can adopt TE 10 The opening direction and shape of the cavity opening 14 can be achieved by properly arranging the grounding member 13 , for example, by setting the location and extension direction of the grounding member 13 .

[0034] As an implementation method capable of realizing a rectangular waveguide cavity, Figure 2 As shown, the grounding member 13 includes a first grounding member 131 and a second grounding member 132 extending along a first direction, and a third grounding member 133 extending along a second direction. The first and second directions are perpendicular. The first and second grounding members 131 and 132 are spaced apart in the second direction, and the third grounding member 133 is located at one end (below the illustrated end) of the first and second grounding members 131 and 132 along the first direction, forming a cavity opening 14 at the other end (above the illustrated end) of the first and second grounding members 131 and 132 along the first direction. The grounding member 13 can optionally be made of grounding foam or grounding springs.

[0035] The size of the cavity opening 14 has an important influence on the radiation efficiency. It can be used to estimate the physical size corresponding to the resonant frequency of the cavity mode according to the frequency band of the antenna operation. 10 Taking the rectangular waveguide cavity as an example, the cavity opening 14 includes two dimensions in the first direction and the second direction. Here, the length in the first direction is L1, and the length in the second direction is L2.

[0036] In order to enable the cavity waveguide to generate an aperture superposition effect with the radiator 2 during transmission, in some embodiments of the present disclosure, the length L1 of the cavity opening 14 in the first direction and the length L2 in the second direction satisfy: ,in, is the medium wavelength, the medium wavelength Can be based on Obtain, among which, is the wavelength in vacuum, is the antenna operating frequency, is the dielectric constant of the plastic of the whole device. Further, the length L1 of the cavity opening 14 in the first direction and the length L2 in the second direction satisfy: .

[0037] According to a second aspect of the embodiments of the present disclosure, there is also provided an electronic device comprising any of the above-mentioned antenna assemblies and having all of their beneficial effects, which are not described in detail here. The electronic device includes but is not limited to portable mobile devices such as mobile phones and tablet computers and non-mobile devices such as computers.

[0038] The back cover of the terminal device can be made of non-metallic or metallic materials, and this disclosure does not limit this. Figure 3As shown, in a terminal device with a metal back cover, a decorative part 3 with an opening is provided at a position of the metal back cover corresponding to the camera module, and the antenna assembly is provided in the decorative part 3. Specifically, due to the shielding effect of the metal material and the antenna signal, it is necessary to provide an opening on the metal back cover. In some embodiments of the present disclosure, the antenna assembly can make use of the opening of the metal back cover at the position of the camera module, thereby eliminating the need for additional openings for signal radiation. Typically, a decorative part 3 is provided at a position of the metal back cover corresponding to the camera module. The decorative part 3 may, for example, include a metal annular member and a non-metallic cover plate. The metal annular member may be integrally formed with the metal back cover plate, and the signal may radiate outward from the non-metallic cover plate.

[0039] Taking the decorative part 3 as a metal ring-shaped component as an example, considering the problem that the decorative part 3 made of metal material deteriorates the performance of the radiator 2, thereby causing a decrease in radiation efficiency. Figure 3 As shown, in some embodiments, a beveled edge 21 is provided on one side of the radiator 2 close to the decorative part 3. The cutting angle of the beveled edge 21 can be, for example, 45°. On the one hand, the beveled edge 21 increases the distance between the side of the radiator 2 and the decorative part 3, thereby increasing the clearance area and alleviating the deterioration of the performance of the radiator 2 caused by the decorative part 3 made of metal. On the other hand, considering that when the beveled edge 21 is not provided, it has horizontal and vertical polarizations along the first direction and the second direction, respectively, with partial intersection, resulting in energy loss. The present disclosure changes the direction of the horizontal and vertical polarization by providing a beveled edge 21 with a cutting angle α of 45°, so that the horizontal and vertical polarizations originally along the first direction and the second direction are superimposed on the horizontal and vertical polarizations along the same direction, thereby obtaining better directivity and improving the radiation efficiency of the radiator 2. In addition, the position of the resonance can also be changed by providing the beveled edge 21.

[0040] In some embodiments, the size of the beveled edge 21 has an important influence on the radiation efficiency. It can be used to estimate the physical size corresponding to the resonant frequency of the radiator according to the frequency band of the antenna. Taking the beveled edge 21 with a cutting angle of 45° as an example, the length L3 of the beveled edge 21 can be ,in, is the medium wavelength, the medium wavelength Can be based on Obtain, among which, is the wavelength in vacuum, is the antenna operating frequency, is the dielectric constant of the plastic of the entire device.

[0041] In the foregoing detailed description, reference is made to the accompanying drawings, which illustrate, by way of illustration, specific aspects of the present disclosure in which it may be practiced. In this regard, terms indicating directions or expressing positional relationships, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., may be used with reference to the orientation of the figures being described. Since the components of the described devices may be positioned in a plurality of different orientations, the directional terms may be used for illustrative purposes rather than restrictive. It should be understood that other aspects may be utilized and structural or logical changes may be made without departing from the concepts of the present disclosure. Therefore, the following detailed description should not be taken in a limiting sense.

[0042] It should be understood that, unless otherwise specifically noted, the features of the various embodiments of the present disclosure described herein may be combined with each other. As used herein, the term "and / or" includes any one of the relevant listed items and any combination of any two or more thereof; similarly, "at least one of" includes any one of the relevant listed items and any combination of any two or more thereof.

[0043] It should be understood that, unless otherwise expressly specified or limited, the terms "join," "attach," "install," "connect," "connect," "fix," etc. used in the embodiments of the present disclosure should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or communicable with each other; they can be directly connected, or indirectly connected through an intermediate medium, and they can be internally connected between two elements or an interactive relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0044] Additionally, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may be used herein to mean that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are disposed between the surface and the component, element, or material layer. However, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may alternatively have a specific meaning: the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, e.g., in direct contact with the surface.

[0045] Although terms such as "first", "second" and "third" may be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, part, region, layer or section from another component, part, region, layer or section. Therefore, without departing from the teachings of each example, the first component, part, region, layer or section mentioned in the examples described herein may also be referred to as the second component, part, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one such feature. In the description herein, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0046] It should be understood that spatially relative terms, such as "above," "upper," "below," and "lower," are used herein to describe the relationship of one element to another element shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being "above" or "upper" relative to another element would then be "below" or "lower" relative to the other element. Thus, the term "above" encompasses both above and below orientations, depending on the spatial orientation of the device. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0047] Furthermore, the word "exemplary" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not necessarily to be construed as advantageous over other aspects or designs. Rather, the use of the word exemplary is intended to present concepts in a concrete manner. As used herein, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless otherwise specified or clear from the context, "X applies to A or B" is intended to mean any of the natural inclusive permutations. That is, if X applies to A; X applies to B; or X applies to both A and B, then "X applies to A or B" satisfies any of the aforementioned instances. Furthermore, the articles "a" and "an," as used in this application and the appended claims, are generally understood to mean "one or more," unless otherwise specified or clear from the context to refer to the singular form.

[0048] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. With particular regard to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if not structurally equivalent to the disclosed structure. In addition, although particular features of the present disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms "include," "have," "have," "have," or variations thereof are used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term "comprising."

[0049] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

[0050] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An antenna assembly, characterized in that: The invention comprises a cavity reflection structure and a radiator, wherein: the cavity reflection structure comprises a first steel sheet of the electronic device and a second steel sheet arranged on the first steel sheet, the first steel sheet and the second steel sheet are connected by multiple grounding members, and the multiple grounding members enable the cavity reflection structure to form a cavity opening for radiating energy outward; the projection of the radiator in the direction of the first steel sheet is at least partially located within the cavity opening.

2. The antenna assembly according to claim 1, wherein: The cavity opening is a rectangular waveguide cavity.

3. The antenna assembly according to claim 2, wherein: The grounding member includes a first grounding member and a second grounding member extending along a first direction and a third grounding member extending along a second direction, wherein the first direction and the second direction are perpendicular, wherein the first grounding member and the second grounding member are spaced apart in the second direction, and the third grounding member is located at one end of the first grounding member and the second grounding member along the first direction to form the cavity opening at the other end of the first grounding member and the second grounding member along the first direction.

4. The antenna assembly according to claim 2, wherein: The working mode of the cavity reflection structure is TE 10 , the length of the cavity opening in the first direction and the length in the second direction satisfy: , where L1 is the length of the cavity opening in the first direction, and L2 is the length of the cavity opening in the second direction, is the medium wavelength.

5. The antenna assembly according to claim 4, wherein: The length of the cavity opening in the first direction and the length in the second direction satisfy: .

6. The antenna assembly according to claim 1, wherein: The grounding element is a grounding foam or a grounding spring.

7. An electronic device, characterized in that: The antenna assembly comprises any one of claims 1 to 6.

8. The electronic device according to claim 7, wherein: The first steel sheet is a display module steel sheet, and / or the second steel sheet is a bracket steel sheet.

9. The electronic device according to claim 8, wherein: The electronic device further includes a metal back cover, wherein a decorative piece having an opening is provided on the metal back cover at a position corresponding to the camera module, and the antenna assembly is provided in the decorative piece.

10. The electronic device according to claim 9, wherein: The decorative piece is a metal ring-shaped component, and a side of the radiator close to the decorative piece is provided with a chamfered edge.

11. The electronic device according to claim 10, wherein: The beveled edge has a cutting angle of 45°.

12. The electronic device according to claim 11, wherein: The length of the beveled edge is ,in, is the medium wavelength.

13. The electronic device according to claim 7, wherein: The radiator is an FPC antenna.

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