Cavity antenna and electronic equipment

Abstract

The invention provides a cavity antenna and electronic equipment, and the cavity antenna comprises a support which comprises a first part and a second part, the thickness of the first part is smaller than that of the second part, and one end, far away from the second part, of the first part is bent; the flexible printed circuit antenna is arranged on the surface of the first part and the surface of the second part, a cavity is formed in the space defined by the flexible printed circuit antenna, and a first opening of the cavity is formed in the surface of the first part.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and more specifically to a cavity antenna and electronic equipment. Background Art

[0002] At present, in order to meet users' demand for more functions to be integrated into electronic devices, electronic devices need to integrate more electronic components in a limited space, resulting in a smaller and smaller installation space for antennas. In addition, the miniaturization and thinness of electronic devices will further compress the installation space for antennas. The smaller installation space results in a smaller distance between the antenna and the metal parts of the electronic device, which affects the communication performance of the antenna. Summary of the invention

[0003] The first aspect of the disclosed embodiment provides a cavity antenna, comprising: a bracket, comprising a first part and a second part, the thickness of the first part is less than the thickness of the second part, and the first part is bent at one end away from the second part; a flexible printed circuit antenna, arranged on the surfaces of the first part and the second part, the space enclosed by the flexible printed circuit antenna forms a cavity, wherein the surface of the first part is formed with a first opening of the cavity.

[0004] According to an embodiment of the present disclosure, the bracket has a first side surface and a second side surface opposite to each other along the thickness spatial direction, the first side surface is covered with an isolation plate, and a second opening of the cavity is formed on the second side surface.

[0005] According to an embodiment of the present disclosure, a feeding point and a grounding point are provided on the first surface of the flexible printed circuit antenna, and the flexible printed circuit antenna is not provided in a preset area between the feeding point and the grounding point to insulate the feeding point and the grounding point, and the first surface is the surface of the flexible printed circuit antenna that is away from the first opening direction.

[0006] According to an embodiment of the present disclosure, a ratio of the length to the width of the bracket is 1.5-2, and the direction from the first portion to the second portion is the width direction.

[0007] A second aspect of an embodiment of the present disclosure provides an electronic device, comprising: a metal back cover, a metal back plate of a screen, a first antenna and a second antenna, wherein the first antenna and the second antenna are arranged between the metal back cover and the metal back plate of the screen, and a first projection area of ​​the first antenna on the metal back cover does not overlap with a second projection area of ​​the second antenna on the metal back cover; the first antenna is the cavity antenna described above.

[0008] According to an embodiment of the present disclosure, at least a portion of the first projection area faces the gap between the edge of the metal back plate of the screen and the frame of the electronic device, so that the first radiation direction of the first antenna points to the gap between the edge of the metal back plate of the screen and the frame of the electronic device; at least a portion of the second projection area faces the area where the functional components arranged on the metal back cover are located, so that the second radiation direction of the second antenna points to the glass cover plate of the functional components; or, at least a portion of the first projection area faces the area where the functional components arranged on the metal back cover are located, so that the first radiation direction of the first antenna points to the glass cover plate of the functional components; at least a portion of the second projection area faces the gap between the edge of the metal back plate of the screen and the frame of the electronic device, so that the second radiation direction of the second antenna points to the gap between the edge of the metal back plate of the screen and the frame of the electronic device.

[0009] According to an embodiment of the present disclosure, the bent portion of the first part of the first antenna is close to the frame of the electronic device.

[0010] According to an embodiment of the present disclosure, the operating frequency range of the first antenna is 2.4 GHz to 2.5 GHz.

[0011] According to an embodiment of the present disclosure, the first side of the flexible printed circuit antenna covered with the isolation plate faces the second antenna.

[0012] According to an embodiment of the present disclosure, the first antenna and the second antenna are fixed between the metal back cover and the metal back plate of the screen by a fixing member so that the first antenna and the second antenna have no contact with the metal back cover and the metal back plate of the screen; or, the first antenna and the second antenna are arranged between the metal back cover and the metal back plate of the screen by an insulating component so that the first antenna and the second antenna have no contact with the metal back cover and the metal back plate of the screen.

[0013] The cavity antenna and electronic device provided in this embodiment can strengthen the coupling between the upper and lower grounds because the thickness of the first part of the bracket is less than the thickness of the second part, that is, a part of the cavity antenna is thinned. One end of the cavity antenna is bent and extended, which can extend the length of the antenna, that is, increase the effective length of the cavity antenna. The combination of the two can reduce the resonant frequency of the antenna, help reduce electromagnetic interference with other devices, and improve the reliability and stability of antenna communication. In addition, the overall size of the antenna can be effectively compressed. By designing the first antenna as a cavity antenna, it is possible to minimize the demand for space inside the all-metal shell without changing the original second antenna architecture under the framework of the all-metal shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0015] Figure 1 The structure diagram of the cavity antenna according to the embodiment of the present disclosure is schematically shown;

[0016] Figure 2 A cross-sectional view of a cavity antenna according to an embodiment of the present disclosure is schematically shown;

[0017] Figure 3 Schematically shows a side view of a cavity antenna according to an embodiment of the present disclosure;

[0018] Figure 4 Schematically shows a front view of a cavity antenna according to an embodiment of the present disclosure;

[0019] Figure 5 Schematically shows a back view of a cavity antenna according to an embodiment of the present disclosure;

[0020] Figure 6 The structure diagram of an electronic device according to an embodiment of the present disclosure is schematically shown;

[0021] Figure 7 The radiation direction layout diagram of the first antenna and the second antenna according to an embodiment of the present disclosure is schematically shown;

[0022] Figure 8 The figure schematically shows a radiation direction layout diagram of a first antenna and a second antenna according to another embodiment of the present disclosure;

[0023] Fig. 9 The structure of an electronic device according to another embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0025] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0026] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0027] Some block diagrams and / or flow charts are shown in the accompanying drawings. It should be understood that some blocks or combinations thereof in the block diagrams and / or flow charts may be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that these instructions, when executed by the processor, may create a device for implementing the functions / operations described in these block diagrams and / or flow charts.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are contradictory.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In order to meet users' demand for more functions in electronic devices, electronic devices need to integrate more electronic components in a limited space, resulting in a smaller and smaller installation space for antennas. In addition, the miniaturization and thinness of electronic devices will further compress the installation space for antennas. The smaller installation space results in a smaller distance between the antenna and the metal parts of the electronic device, which affects the communication performance of the antenna.

[0031] For example, there are more and more accessories around existing mobile phones, tablets and other electronic products. Styluses, keyboards, mice, etc. basically interact with tablets through antennas (such as Bluetooth antennas). When the Bluetooth antenna continues to work, it will cause the rate of the time-division WiFi signal (2.4G) to decrease. The design architecture of an independent Bluetooth antenna can achieve the purpose of Bluetooth and WiFi working at the same time. However, the design of an independent Bluetooth antenna requires the addition of a space equivalent to the WiFi antenna, and for electronic products mainly made of all metal, it is difficult to find additional space to layout an independent Bluetooth antenna. Even if it can be laid out, it is necessary to sacrifice space such as audio speakers. In addition, the design of an independent Bluetooth antenna has very high requirements for the isolation of the Bluetooth antenna and the WiFi antenna, and it is difficult to achieve sufficient isolation of the Bluetooth antenna and the WiFi antenna. In this way, the Bluetooth and WiFi antennas will interfere with each other, affecting the communication performance of the Bluetooth antenna and the WiFi antenna. In view of this, the present disclosure provides a cavity antenna and an electronic device for at least partially solving the above problems.

[0032] The following will be passed Figure 1~Figure 5 The cavity antenna of the disclosed embodiment is described in detail.

[0033] Figure 1 The structure of a cavity antenna according to an embodiment of the present disclosure is schematically shown. Figure 2 A cross-sectional view of a cavity antenna according to an embodiment of the present disclosure is schematically shown.

[0034] like Figure 1 and Figure 2 As shown, in some embodiments of the present disclosure, the cavity antenna 1 may include: a bracket 11 and a flexible printed circuit antenna 12 .

[0035] The bracket 11 may include a first portion 111 and a second portion 112. The thickness d of the first portion 111 is 1 It may be smaller than the thickness d of the second portion 112 2 , one end of the first portion 111 away from the second portion 112 is bent.

[0036] As a possible implementation method of some embodiments, the first part 111 and the second part 112 can be integrally formed. For example, taking a rectangular parallelepiped as an example, a preset area at one end of the rectangular parallelepiped bracket is thinned to form an "L" structure at one end of the rectangular parallelepiped. The "L" structure portion can serve as the first part 111, and the unthinned portion can serve as the second part 112.

[0037] As another possible implementation manner of some embodiments, the first portion 111 and the second portion 112 may be formed separately, and then one end of the first portion 111 away from the bent portion is spliced ​​with the second portion 112 to form a complete bracket 11 .

[0038] The flexible printed circuit antenna 12 may be disposed on the surface of the first portion 111 and the second portion 112 (eg Figure 1 The upper surface and the lower surface of the orientation shown in FIG. 1 ) are formed by the space surrounded by the flexible printed circuit antenna 12 to form a cavity. The space can be understood as the space surrounded by the flexible printed circuit antenna 12 after the bracket 11 is removed.

[0039] The first portion 111 may have a first opening 113 of the cavity formed on the surface. For example, the first portion 111 may have a first opening 113 formed on the inner side of the bent portion and on the downward surface (with Figure 1 The direction shown is for reference only) the flexible printed circuit antenna 12 is not provided to form a downward first opening 113, that is, the direction of the first opening 113 can be perpendicular to Figure 1 The horizontal plane shown (such as Figure 1 (indicated by the arrow in the middle).

[0040] The working principle of the cavity antenna can be: the space enclosed by the flexible printed circuit antenna 12 forms a cavity which can be regarded as a resonant cavity. When the electromagnetic wave enters the resonant cavity, it can be reflected back and forth inside the resonant cavity to form a standing wave and reach a resonant state. This resonant state can enhance the signal transmission and reception capabilities in the required frequency band. When the electromagnetic wave is reflected on the inner wall of the resonant cavity, if certain conditions are met (such as the relationship between the wavelength, frequency and cavity size), a stable standing wave field can be formed, thereby improving the radiation efficiency and directivity of the antenna.

[0041] The first opening 113 can be used as the main channel for the cavity antenna to radiate and receive signals. The performance of the antenna can be adjusted by changing the size and shape of the first opening 113. For example, the frequency response of the antenna can be optimized to have better performance within the working frequency band; the radiation pattern of the antenna can be adjusted to meet specific communication requirements; and the gain of the antenna can be increased to improve the transmission distance and reception quality of the signal.

[0042] When transmitting a signal, the electromagnetic wave may be radiated out through the first opening 113 , and when receiving a signal, the electromagnetic wave may enter the cavity through the first opening 113 and be received.

[0043] According to an embodiment of the present disclosure, since the thickness of the first part of the bracket is less than the thickness of the second part, that is, a portion of the cavity antenna is thinned, the coupling between the upper and lower grounds can be strengthened. One end of the cavity antenna is bent and extended, which can extend the length of the antenna, that is, increase the effective length of the cavity antenna. The combination of the two can reduce the resonant frequency of the antenna, help reduce electromagnetic interference with other devices, and improve the reliability and stability of antenna communication. In addition, the overall size of the antenna can be effectively compressed.

[0044] Based on the above embodiments, in some embodiments, the bracket 11 has a first side surface and a second side surface opposite to each other along the thickness space direction, the first side surface is covered with an isolation plate, and a second opening of the cavity is formed on the second side surface.

[0045] Figure 3 A side view of a cavity antenna according to an embodiment of the present disclosure is schematically shown.

[0046] For example, in one possible implementation, Figure 3 With reference to the direction shown, the flexible printed circuit antenna 12 can be arranged on the upper surface and the lower surface of the bracket 11 and the side surface of the bent portion facing outward. The left side surface of the bracket 11 where the flexible printed circuit antenna 12 is not arranged can be the first side surface, and the right side surface of the bracket 11 where the flexible printed circuit antenna 12 is not arranged can be the second side surface. The second side surface can be provided with an isolation plate 13, and the first side surface can be provided with no isolation plate 13, forming a second opening 114, and the direction of the second opening 114 can be perpendicular to the first side surface (such as Figure 3 direction indicated by the arrow).

[0047] For example, in a possible implementation, Figure 3 With reference to the direction shown, the flexible printed circuit antenna 12 can be arranged on the upper surface and the lower surface of the bracket 11 and the side surface of the bent portion facing outward. The right side surface of the bracket 11 where the flexible printed circuit antenna 12 is not arranged can be the first side surface, and the left side surface of the bracket 11 where the flexible printed circuit antenna 12 is not arranged can be the second side surface. The isolation plate 13 can be arranged on the second side surface, and the isolation plate 13 is not arranged on the first side surface, forming a second opening 114, and the direction of the second opening 114 can be perpendicular to the second side surface.

[0048] In one example, the first side surface and the second side surface may be parallel to each other, and being parallel to each other may be understood as the first side surface and the second side surface being perpendicular to each other. Figure 3 In another example, the first side surface and the second side surface may be non-parallel to each other, and non-parallel may be understood as the first side surface and the second side surface are parallel to each other. Figure 3 The angles of the horizontal planes shown are different. Figure 3 In the direction shown, the length of the upper surface of the bracket 11 is greater than the length of the lower surface. Figure 3 In the direction shown, the length of the upper surface of the bracket 11 is less than the length of the lower surface.

[0049] In one example, the first side surface and the second side surface may have the same shape. In another example, the first side surface and the second side surface may have different shapes, which is not limited by the present disclosure.

[0050] It should be noted that for the unclear details of the cavity antenna in this embodiment, please refer to the cavity antenna described in the previous embodiment, which will not be repeated here.

[0051] According to an embodiment of the present disclosure, the isolation plate 13 can be used to isolate the cavity antenna from other antennas or elements to improve the isolation of the cavity antenna and meet the isolation requirements of the cavity antenna application. The second opening 114 can be used to adjust the impedance matching of the antenna to improve the transmission efficiency of the signal. The second opening 114 can also be used to adjust the radiation characteristics of the cavity antenna. The second opening 114 can also be used to dissipate heat for the cavity antenna to maintain stable operation of the cavity antenna.

[0052] On the basis of the above embodiments, in some embodiments, a feeding point 121 and a grounding point 122 are provided on the first surface of the flexible printed circuit antenna 12, and the flexible printed circuit antenna 12 is not provided in a preset area between the feeding point 121 and the grounding point 122, so as to insulate the feeding point 121 and the grounding point 122, and the first surface is a surface of the flexible printed circuit antenna 12 away from the first opening 113, that is, Figure 1 or Figure 3 The direction shown is for reference, and the upper surface of the flexible printed circuit antenna 12 on the upper surface of the bracket 11 is the first surface.

[0053] Figure 4 A front view of a cavity antenna according to an embodiment of the present disclosure is schematically shown.

[0054] like Figure 1-Figure 4 For example, the "H" region between the feed point 121 and the ground point 122 is not mounted as the flexible printed circuit antenna 12. The feed point 121 can be provided on the flexible printed circuit antenna 12 in the upper half of the "H" region, and the ground point 122 can be provided on the flexible printed circuit antenna 12 in the lower half of the "H" region; or, the feed point 121 can be provided on the flexible printed circuit antenna 12 in the lower half of the "H" region, and the ground point 122 can be provided on the flexible printed circuit antenna 12 in the upper half of the "H" region.

[0055] In a possible implementation, a cable 123 may be connected to a feeding point 21 to feed the cavity antenna.

[0056] According to the embodiments of the present disclosure, by setting the feeding method of the above structure and position, the input impedance of the cavity antenna can be better matched, the influence of parasitic radiation can be minimized, and the influence on the resonant frequency of the cavity antenna can be reduced.

[0057] On the basis of the above embodiment, the ratio of the length to the width of the bracket 1 may be 1.5-2, wherein the direction from the first portion 111 to the second portion 112 is the width direction.

[0058] The resonant frequency of the cavity antenna is mainly affected by its width. By extending the length of the cavity antenna by flanging the first side, and by thinning the thickness of the antenna front bracket and strengthening the coupling between the upper and lower grounds, the resonant frequency of the antenna can be greatly reduced, effectively compressing the overall size of the antenna. The length of the cavity antenna mainly affects the impedance of the cavity antenna and the resonant frequency. By compressing the length and falling within a reasonable range (the ratio of length to width can be 1.5~2), the impedance matching of the cavity antenna is ensured.

[0059] For example, the length L of the cavity antenna 1 Can be 20 mm, width W 1 can be 12 mm, the length l of the first bending portion can be 2 mm, and the thickness d of the first portion 111 can be 1 The thickness d of the second portion 112 may be 0.5 mm. 2 Can be 3.5 mm, the length and width of the "H" area L 2 , W 2 Can be 8 mm, single side width W 3 It can be 1 mm. It should be understood that these values ​​are only for the purpose of clearly illustrating the cavity antenna of the embodiment of the present disclosure, and are not intended to limit the present disclosure.

[0060] Figure 5 A back view of a cavity antenna according to an embodiment of the present disclosure is schematically shown.

[0061] like Figure 5 As shown, in a possible implementation, the back of the cavity antenna 1 can be grounded through conductive foam.

[0062] It should be noted that for the unclear details of the cavity antenna in this embodiment, please refer to the cavity antenna described in the previous embodiment, which will not be repeated here.

[0063] The embodiment of the present disclosure also provides an electronic device, which will be described below through Figure 6~Figure 8 The electronic device of the disclosed embodiment is described in detail.

[0064] Figure 6 The structure diagram of an electronic device according to an embodiment of the present disclosure is schematically shown.

[0065] like Figure 6 As shown, the electronic device may include: a metal back cover 2, a metal back plate 3 of a screen, a first antenna 4 and a second antenna 5, wherein the first antenna 4 and the second antenna 5 are arranged between the metal back cover 2 and the metal back plate 3 of the screen, and the first antenna 4 on the first projection area of ​​the metal back cover 2 does not overlap with the second antenna 5 on the second projection area of ​​the metal back cover 2.

[0066] The first antenna 4 may be the cavity antenna 1 mentioned above. For specific details, please refer to the embodiment of the cavity antenna mentioned above, which will not be described again here.

[0067] The first projection area of ​​the first antenna 4 on the metal back cover 2 and the second projection area of ​​the second antenna 5 on the metal back cover 2 do not overlap, which can be understood as setting an independent space between the metal back cover 2 and the metal back plate 3 of the screen to arrange the first antenna 4 and the second antenna 5.

[0068] In one possible implementation, the first antenna 4 may be, for example, a Bluetooth antenna, and the second antenna 5 may be, for example, a WiFi antenna. In another possible implementation, the first antenna 4 may be, for example, a WiFi antenna, and the second antenna 5 may be, for example, a Bluetooth antenna.

[0069] According to an embodiment of the present disclosure, by designing the first antenna as a cavity antenna, it is possible to minimize the demand for space inside the all-metal shell without changing the original second antenna architecture within the framework of the all-metal shell.

[0070] After the electronic device is assembled, the edge of the metal back plate 3 of the screen may not be in contact with the frame of the electronic device, and there may be a gap. Functional components 7, such as camera components, lighting components, etc., may be installed on the metal back cover 2 of the electronic device, and these functional components 7 may include a glass cover. In order to allow the electromagnetic waves of the first antenna 4 and the electromagnetic waves of the second antenna 5 to radiate from the all-metal shell, the gap between the edge of the metal back plate 3 of the screen and the frame of the electronic device or the glass cover of the functional component can be used as the radiation outlet of the electromagnetic waves of the first antenna 4 and the electromagnetic waves of the second antenna 5.

[0071] Figure 7 The radiation direction layout diagram of the first antenna and the second antenna according to an embodiment of the present disclosure is schematically shown.

[0072] like Figure 7 As shown, based on the above embodiments, in some embodiments, at least a portion of the first projection area is opposite to the gap between the edge of the metal back plate 3 of the screen and the frame of the electronic device, so that the first radiation direction of the first antenna 4 points to the gap between the edge of the metal back plate 3 of the screen and the frame of the electronic device; at least a portion of the second projection area is opposite to the area where the functional component 7 set on the metal back cover 2 is located, so that the second radiation direction of the second antenna 5 points to the glass cover of the functional component.

[0073] Figure 8 The radiation direction layout diagram of the first antenna and the second antenna according to another embodiment of the present disclosure is schematically shown.

[0074] like Figure 8As shown, based on the above embodiments, in some embodiments, at least a portion of the first projection area is opposite to the area where the functional component 7 is located on the metal back cover 2, so that the first radiation direction of the first antenna 4 points to the glass cover plate of the functional component 7; at least a portion of the second projection area is opposite to the gap between the edge of the metal back plate 3 of the screen and the frame of the electronic device, so that the second radiation direction of the second antenna 5 points to the gap between the edge of the metal back plate 3 of the screen and the frame of the electronic device.

[0075] According to an embodiment of the present disclosure, by setting one of the first radiation direction of the first antenna and the second radiation direction of the second antenna to point to the gap between the edge of the metal back plate of the screen and the frame of the electronic device, and the other to point to the glass cover plate of the functional component, one of the first antenna and the second antenna points to the screen of the electronic device, and the other antenna points to the back cover of the electronic device, and the radiation directions of the two antennas are opposite, thereby improving the isolation between the first antenna and the second antenna.

[0076] Based on the above embodiments, continue to refer to Figure 6 The bent portion of the first portion 111 of the first antenna 4 is close to the frame of the electronic device. For example, the bent portion of the first portion 111 of the cavity antenna is close to the frame of the short side of the electronic device. For another example, the bent portion of the first portion 111 of the first antenna 4 is close to the frame of the long side of the electronic device.

[0077] According to an embodiment of the present disclosure, the bent portion of the first part of the cavity antenna of the first antenna is placed close to the frame of the electronic device. With the help of the bending characteristics of the frame, the bent portion of the first part can be better accommodated, further reducing the space occupied by the first antenna in the electronic device.

[0078] Based on the above embodiments, in some embodiments, the operating frequency range of the first antenna may be 2.4 GHz to 2.5 GHz.

[0079] On the basis of the above embodiment, in some embodiments, the first side of the flexible printed circuit antenna 12 covered with the isolation plate 13 may face the second antenna 5 .

[0080] According to an embodiment of the present disclosure, since the function of the isolation board is isolation, and the isolation between the first antenna and the second antenna needs to be achieved in the electronic device, the first side of the flexible printed circuit antenna covered with the isolation board can be facing the second antenna, which can further improve the isolation between the first antenna and the second antenna.

[0081] Based on the above embodiments, in some embodiments, the first antenna 4 and the second antenna 5 are fixed between the metal back cover 2 and the metal back plate 3 of the screen by fixing parts so that the first antenna 4 and the second antenna 5 have no contact with the metal back cover 2 and the metal back plate 3 of the screen.

[0082] This setting method mainly takes into account that when the first antenna 4 and the second antenna 5 come into contact with the metal back cover 2 or the metal back plate 3 of the screen, the radiation performance of the first antenna 4 and the second antenna 5 will be greatly reduced. Therefore, the first antenna 4 and the second antenna 5 are fixed between the metal back cover 2 and the metal back plate 3 of the screen by fixing parts to avoid contact with the metal back cover 2 and the metal back plate 3 of the screen, thereby avoiding reduction of the radiation performance of the first antenna 4 and the second antenna 5.

[0083] It should be noted that the fixing member can be determined according to actual conditions and is not limited here. As an example, the fixing member can be a clamp. Fixing the first antenna 4 and the second antenna 5 between the metal back cover 2 and the metal back plate 3 of the screen by a fixing member can be fixing the first antenna 4 and the second antenna 5 between the metal back cover 2 and the metal back plate 3 of the screen by a clamp to avoid contact with the metal back cover 2 and the metal back plate 3 of the screen, thereby avoiding greatly reducing the antenna radiation performance.

[0084] In other embodiments, the first antenna 4 and the second antenna 5 are arranged between the metal back cover 2 and the metal back plate 3 of the screen through an insulating component so that the first antenna 4 and the second antenna 5 have no contact with the metal back cover 2 and the metal back plate 3 of the screen.

[0085] This setting method mainly takes into account that when the first antenna 4 and the second antenna 5 come into contact with the metal back cover 2 or the metal back plate 3 of the screen, the radiation performance of the first antenna 4 and the second antenna 5 will be greatly reduced. Therefore, the first antenna 4 and the second antenna 5 are fixed between the metal back cover 2 and the metal back plate 3 of the screen through an insulating component to avoid contact with the metal back cover 2 and the metal back plate 3 of the screen, thereby avoiding reduction of the radiation performance of the first antenna 4 and the second antenna 5.

[0086] It should be noted that the insulating component can be determined according to actual conditions and is not limited here. As an example, the insulating component can be a gasket made of metal and non-metallic materials, such as a wound gasket or a metal-coated gasket. Fixing the first antenna 4 and the second antenna 5 between the metal back cover 2 and the metal back plate 3 of the screen by the insulating component can be fixing the first antenna 4 and the second antenna 5 between the metal back cover 2 and the metal back plate 3 of the screen by a wound gasket or a metal-coated gasket to avoid contact with the metal back cover 2 and the metal back plate 3 of the screen, thereby avoiding greatly reducing the antenna radiation performance.

[0087] Fig. 9The structure of an electronic device according to another embodiment of the present disclosure is schematically shown.

[0088] like Fig. 9 As shown, in this embodiment, the electronic device may include: a metal back cover 2, a metal back plate 3 of a screen, a first antenna 4, a second antenna 5 and a third antenna 6, the first antenna 4, the second antenna 5 and the third antenna 6 are arranged between the metal back cover 2 and the metal back plate 3 of the screen, and the first antenna 4 is in a first projection area of ​​the metal back cover 2, the second antenna 5 is in a second projection area of ​​the metal back cover 2, and the third antenna 6 is in a third projection area of ​​the metal back cover 2.

[0089] As an example, the first antenna 4 may be a Bluetooth antenna, and the second antenna 5 and the third antenna 6 may be WiFi antennas. The second antenna 5 may be a Deco antenna, and the third antenna 6 may be a WiFi cavity antenna, or the second antenna 5 may be a WiFi cavity antenna, and the third antenna 6 may be a Deco antenna.

[0090] According to an embodiment of the present disclosure, by setting up multiple WiFi antennas, signals are received at different locations of the electronic device, and these signals can be reasonably combined to increase the received signal strength, which helps to avoid signal attenuation and interference. Multiple WiFi antennas can achieve diversity transmission of signals. Diversity transmission is to send multiple copies of the same signal through different antennas. Even if one of the WiFi antennas encounters interference or signal attenuation, the other WiFi antennas can still continue to transmit signals, thereby ensuring the reliability of communication.

[0091] It should be noted that the description of the electronic device of the embodiment of the present application is similar to the description of the above-mentioned antenna embodiment, and has similar beneficial effects as the structural embodiment, so it is not repeated here. For technical details not disclosed in the embodiment of the electronic device, please refer to the description of the antenna embodiment of the present application for understanding.

[0092] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations and / or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0093] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A cavity antenna, comprising: The bracket comprises a first part and a second part, the thickness of the first part is smaller than the thickness of the second part, and one end of the first part away from the second part is bent; The flexible printed circuit antenna is arranged on the surfaces of the first part and the second part. The space enclosed by the flexible printed circuit antenna forms a cavity, wherein a first opening of the cavity is formed on the surface of the first part.

2. The cavity antenna according to claim 1, wherein the bracket has a first side surface and a second side surface opposite to each other along the thickness spatial direction, the first side surface is covered with an isolation plate, and a second opening of the cavity is formed on the second side surface.

3. According to the cavity antenna according to claim 1, a feeding point and a grounding point are provided on the first surface of the flexible printed circuit antenna, and the flexible printed circuit antenna is not set in a preset area between the feeding point and the grounding point to insulate the feeding point and the grounding point, and the first surface is the surface of the flexible printed circuit antenna that is away from the first opening direction.

4. The cavity antenna according to claim 1, wherein a ratio of the length to the width of the bracket is 1.5 to 2, and a direction from the first portion to the second portion is a width direction.

5. An electronic device comprising: A metal back cover, a metal back plate of a screen, a first antenna and a second antenna, wherein the first antenna and the second antenna are arranged between the metal back cover and the metal back plate of the screen, and the first antenna in a first projection area of ​​the metal back cover and the second antenna in a second projection area of ​​the metal back cover do not overlap; the first antenna is the cavity antenna described in any one of claims 1-4.

6. The electronic device according to claim 5, wherein at least a portion of the first projection area faces a gap between an edge of a metal back plate of the screen and a frame of the electronic device, so that a first radiation direction of the first antenna points to the gap between an edge of the metal back plate of the screen and a frame of the electronic device; At least a portion of the second projection area is directly opposite to the area where the functional component is located on the metal back cover, so that the second radiation direction of the second antenna points to the glass cover of the functional component; Alternatively, at least a portion of the first projection area is directly opposite to an area where a functional component is disposed on the metal back cover, so that the first radiation direction of the first antenna points to the glass cover plate of the functional component; At least a portion of the second projection area faces the gap between the edge of the metal back plate of the screen and the frame of the electronic device, so that the second radiation direction of the second antenna points to the gap between the edge of the metal back plate of the screen and the frame of the electronic device. 7 . The electronic device according to claim 5 , wherein the bent portion of the first portion of the first antenna is close to a frame of the electronic device.

8. The electronic device according to claim 5 or 6, wherein the operating frequency range of the first antenna is 2.4 GHz to 2.5 GHz. 9 . The electronic device according to claim 5 , wherein the first side of the flexible printed circuit antenna covered with the isolation plate faces the second antenna.

10. The electronic device according to claim 5 or 6, wherein the first antenna and the second antenna are fixed between the metal back cover and the metal back plate of the screen by a fixing member, so that the first antenna and the second antenna are not in contact with the metal back cover and the metal back plate of the screen; Alternatively, the first antenna and the second antenna are arranged between the metal back cover and the metal back plate of the screen through an insulating component so that the first antenna and the second antenna have no contact with the metal back cover and the metal back plate of the screen.

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