Antenna structure and electronic device

Abstract

The present disclosure relates to an antenna structure and an electronic device. The antenna structure comprises a support antenna and at least one frame antenna branch. The support antenna is arranged on one side of the frame antenna branch. An opening is arranged on a first side of the support antenna close to the frame antenna branch. The opening exposes a second side of the support antenna. The first side is opposite to the second side. The distance between the frame antenna branch and the first side of the support antenna is greater than a preset distance. The preset distance is positively correlated with the working wavelength of the support antenna. The present disclosure enhances the frame antenna branch by the support antenna. The distance between the first side of the support antenna close to the frame antenna branch is greater than the preset distance, so as to avoid the support antenna from interfering with the signal of the frame antenna branch. The opening arranged on the first side can avoid the support antenna from generating reverse current with the frame antenna branch, thereby improving the performance and radiation efficiency of the antenna.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to an antenna structure and electronic device. Background Technology

[0002] With the gradual development of communication technology, people have higher and higher requirements for the communication quality of electronic devices. However, in electronic devices with increasingly compact structures, there is less and less space reserved for antennas. Since the distance between different antennas is close, they will inevitably interfere with each other, resulting in poor antenna efficiency. Utility Model Content

[0003] To overcome the problems existing in related technologies, this disclosure provides an antenna structure and an electronic device.

[0004] According to a first aspect of the present disclosure, an antenna structure is provided, comprising:

[0005] At least one frame antenna stub;

[0006] A bracket antenna is disposed on one side of the frame antenna branch. An opening is provided on the first side of the bracket antenna near the frame antenna branch, and the opening exposes the second side of the bracket antenna. The first side and the second side are opposite to each other. The distance between the frame antenna branch and the first side of the bracket antenna is greater than a preset distance, and the preset distance is positively correlated with the operating wavelength of the bracket antenna.

[0007] In this embodiment of the present disclosure, the antenna structure is configured with a bracket antenna to enhance the frame antenna stubs. The distance between the first side of the bracket antenna near the frame antenna stubs is greater than a preset distance to avoid the bracket antenna interfering with the signal of the frame antenna stubs. An opening is provided on the first side to prevent the bracket antenna from generating current that interferes with the frame antenna stubs, thereby improving the performance and radiation efficiency of the antenna.

[0008] In one possible implementation, the support antenna includes at least one stub, the support antenna is provided with a clearance hole for avoiding a target object penetrating the support antenna, and the at least one stub is arranged around the clearance hole.

[0009] In this embodiment of the present disclosure, the support antenna is provided with a avoidance hole for avoiding targets, so as to avoid mutual interference between the support antenna and the target.

[0010] In one possible implementation, the bracket antenna includes a feed point and a ground point, the ground point being disposed near the second side and the feed point being disposed near the frame antenna stub.

[0011] In this embodiment of the disclosure, a feed point and a ground point are set to ground the support antenna, thereby balancing the charge distribution of the support antenna and optimizing the antenna's transmission and reception efficiency.

[0012] In one possible implementation, the support antenna includes a first segment and a second segment, the first segment extending along a first direction, a first portion of the second segment extending along the first direction, and a second portion of the second segment extending along a second direction after being bent relative to the first portion, wherein there is a preset angle between the first direction and the second direction;

[0013] The first segment is connected to the second part via a connecting segment.

[0014] In this embodiment of the present disclosure, there is a preset angle between the first direction and the second direction, so that there is an angle between the first segment and the second segment of the support antenna, and together they form an approximately circular frame structure, so as to minimize space occupation while realizing the antenna function.

[0015] In one possible implementation, the feed point is located at the end of the first segment away from the second portion, and the grounding point is located in the connection segment.

[0016] In this embodiment of the disclosure, the positions of the feed point and the ground point are designed to avoid the current of the bracket antenna interfering with the stubs of the frame antenna.

[0017] In one possible implementation, the bracket antenna is mounted on the bracket by laser engraving.

[0018] In this embodiment of the disclosure, the antenna is formed using a bracket, which has a high space utilization rate and helps to save more design space.

[0019] In one possible implementation, the antenna structure includes a plurality of the frame antenna stubs, with gaps provided between adjacent frame antenna stubs.

[0020] In this embodiment, the frame antenna stub is divided into multiple antenna radiators by a gap, thereby radiating antenna signals of different frequency bands to meet diverse communication needs.

[0021] In one possible implementation, the preset distance is greater than or equal to one-eighth of the operating wavelength of the support antenna, and less than or equal to the operating wavelength of the support antenna.

[0022] In this embodiment of the disclosure, the preset distance is set according to the operating wavelength of the bracket antenna, so as to save the space occupied by the antenna as much as possible without affecting the antenna performance.

[0023] According to a second aspect of the present disclosure, an electronic device is provided, including a mid-frame and a bracket, and an antenna structure as described in the first aspect of the present disclosure, wherein at least one frame antenna stub of the antenna structure is disposed on the mid-frame, and the bracket antenna is disposed on the bracket.

[0024] In one possible implementation, the electronic device includes a camera, and the bracket is used to mount the camera.

[0025] In this embodiment of the disclosure, the bracket antenna is mounted on the camera bracket, thereby improving space utilization and reducing the space occupied by the antenna structure.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0028] Figure 1 This is a schematic diagram of an antenna structure in related technologies.

[0029] Figure 2 This is a schematic diagram of the structure of a support antenna in related technologies.

[0030] Figure 3 This is a schematic diagram of an antenna structure according to an exemplary embodiment.

[0031] Figure 4 This is a schematic diagram of the structure of a support antenna according to an exemplary embodiment.

[0032] Figure 5 This is a schematic diagram of the current flow of the bracket antenna when the frame antenna stubs operate in the GPS L1 band in related technologies.

[0033] Figure 6 This is a schematic diagram of the current flow of the bracket antenna when the frame antenna stubs operate in the GPS L1 band.

[0034] Figure 7 This is a schematic diagram of the current flow of the bracket antenna when the frame antenna stubs operate in the WiFi 2.4G band in related technologies.

[0035] Figure 8 This is a schematic diagram of the current flow of the bracket antenna in the WiFi 2.4G band, where the frame antenna stubs operate.

[0036] Figure 9This is a comparison chart of antenna efficiency curves before and after adopting the technical solution of the present disclosure embodiment. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0038] With the gradual development of communication technology, people have higher and higher requirements for the communication quality of electronic devices. However, in electronic devices with increasingly compact structures, there is less and less space reserved for antennas. Since the distance between different antennas is close, they will inevitably interfere with each other, resulting in poor antenna efficiency.

[0039] like Figures 1-2 As shown, in related technologies, the bracket antenna 20' includes an antenna body 26' and an extension stub 27' connected to the antenna body 26'. The frame antenna stub 10' includes a first frame antenna stub 11' and a second frame antenna stub 12'. When the antenna operates in, for example, the GPS L1 band and the WiFi 2.4G band, a current opposite in direction to the first frame antenna stub 11' and the second frame antenna stub 12' will be generated on the bracket antenna 20', resulting in a decrease in antenna efficiency and a poor communication experience.

[0040] To address the aforementioned technical problems, this disclosure proposes an antenna structure and electronic device. The antenna structure includes a support antenna that enhances the frame antenna stubs. The distance between the first side of the support antenna and the frame antenna stubs is greater than a preset distance to avoid interference between the support antenna and the frame antenna stubs. An opening is provided on the first side to prevent the support antenna from generating current that interferes with the frame antenna stubs, thereby improving the antenna's performance and radiation efficiency.

[0041] According to an exemplary embodiment, such as Figures 3-4As shown, this embodiment of the disclosure provides an antenna structure including a support antenna 20 and at least one frame antenna stub 10. The support antenna 20 is disposed on one side of the frame antenna stub 10, and the support antenna 20 has a first side 201 and a second side 202, with the first side 201 opposite to the second side 202. The first side 201 is the side of the support antenna 20 closest to the frame antenna stub 10. The first side 201 has an opening 24 that exposes the second side 202 of the support antenna 20. That is, compared with related technologies, the technical solution of this disclosure eliminates the original extension branch 27' and sets an opening 24' at the position where the extension branch 27' was set on the original antenna body 26', thereby adjusting the current direction of the bracket antenna 20, avoiding the bracket antenna 20 from generating a current opposite to that of the frame antenna branch 10, and also making the current in the bracket antenna 20 away from the frame antenna branch 10, which is equivalent to increasing the distance between the bracket antenna 20 and the frame antenna branch 10, thereby avoiding the bracket antenna 20 from interfering with the antenna radiation signal generated by the frame antenna branch 10, so as to improve the antenna performance and radiation efficiency.

[0042] In this embodiment, the distance between the frame antenna stub 10 and the first side 201 of the support antenna 20 is greater than a preset distance, and the preset distance is positively correlated with the operating wavelength λ of the support antenna 20. For example, when the operating wavelength λ of the support antenna 20 is used to enhance the frame antenna stub 10 at different frequency bands, it can correspond to different operating wavelengths λ. The preset distance and the operating wavelength λ of the support antenna 20 are multiples of each other, and the multiple can be less than 1. Generally, the higher the frequency of the support antenna 20, the smaller λ is, and the smaller the preset distance is; the lower the frequency, the larger λ is, and the larger the preset distance is. Those skilled in the art can determine λ according to the target frequency band of the support antenna 20, and thus set the preset distance according to λ. This embodiment does not impose too many restrictions on this. If the distance between the frame antenna stub 10 and the first side 201 of the support antenna 20 is too small, the support antenna 20 and the frame antenna stub 10 will interfere with each other. If the distance is too large, it is not conducive to the compact layout of the whole device. Therefore, reasonably setting the distance between the frame antenna stub 10 and the first side 201 of the support antenna 20 according to the operating wavelength λ of the support antenna can save the space occupied by the antenna as much as possible without affecting the antenna performance.

[0043] In some embodiments, the bracket antenna 20 employs LDS (Laser-Direct-structuring) technology, and is mounted on a bracket (not shown in the figure) by laser engraving. An LDS antenna refers to an antenna pattern formed directly on a bracket by projecting a laser onto the bracket. This results in a stable and highly accurate antenna. The bracket can be used to form the antenna, maximizing space utilization and saving design space. The bracket can be a plastic bracket used in electronic devices, such as a camera bracket or microphone bracket. This disclosure does not impose excessive limitations on this type of bracket, and those skilled in the art can choose according to actual needs.

[0044] In some embodiments, the support antenna 20 includes at least one stub. For example... Figures 3-4 As shown, the support antenna 20 may include two or more stubs; this embodiment does not impose excessive limitations on this. The support antenna 20 is provided with a clearance hole 251 to prevent interference between the support antenna 20 and the target. The clearance hole 251 is used to avoid a target object (not shown) penetrating the support antenna 20, and at least one stub is arranged around the clearance hole 251. The shape of the clearance hole 251 can be circular, square, trapezoidal, racetrack-shaped, etc.; this embodiment does not impose excessive limitations on this, and the specific shape can be matched to the shape of the target object.

[0045] When the bracket antenna 20 is mounted on the camera bracket of an electronic device, the target object can be a camera; when the bracket antenna 20 is mounted on a microphone bracket, the target object can be a microphone; when the bracket antenna 20 is mounted on other structures, the target object may also be various interfaces, circuits, electronic components, protruding structures, positioning structures, or other structures. This disclosure does not impose too many restrictions on this, and those skilled in the art can make settings according to actual needs.

[0046] In some embodiments, the bracket antenna 20 is further provided with mounting holes 252. The number of mounting holes 252 can be multiple, and these holes are distributed dispersedly on the bracket antenna 20. The shapes of the mounting holes 252 can be circular, square, trapezoidal, rounded rectangles, etc. The mounting holes 252 can be used to improve the tightness of the connection between the bracket antenna 20 and the bracket. For example, the mounting holes 252 can be used to increase the contact area between the bracket antenna 20 and the bracket, or fasteners can be used to fix the bracket antenna 20 to the bracket. Those skilled in the art can configure the mounting holes according to actual needs, and the embodiments disclosed herein do not impose excessive limitations in this regard.

[0047] In some embodiments, the support antenna 20 includes a feed point 203 and a ground point 204. For example... Figures 3-4As shown, grounding point 204 is located near the second side 202, and feed point 203 is located near the frame antenna stub 10. By setting feed point 203 and grounding point 204, the support antenna 20 can be grounded, thereby balancing the charge distribution of the support antenna 20 and optimizing the antenna's transmission and reception efficiency.

[0048] In some embodiments, the bracket antenna 20 includes a first segment 21 and a second segment 22. For example... Figure 4 As shown, the first segment 21 extends along the first direction, and the second segment 22 has a connected first part 221 and a second part 222. The first part 221 extends along the first direction, and the second part 222 of the second segment 22 bends relative to the first part 221 and extends along the second direction. There is a preset angle between the first direction and the second direction, so that the first segment 21 and the second segment 22 of the bracket antenna 20 together form an approximately ring-shaped frame structure, which minimizes space occupation while realizing the antenna function.

[0049] In one example, the first direction is perpendicular to the second direction. Figure 4 Taking the directions shown as an example, the first direction is... Figure 4 The vertical direction shown, the second direction is also Figure 4 The horizontal direction shown.

[0050] In some embodiments, the bracket antenna 20 further includes a connecting segment 23. For example... Figure 4 As shown, the first segment 21 is connected to the second part 222 via a connecting segment 23. The connecting segment 23 can be integrally formed with the first segment 21 and the second segment 22, or it can be a separately configured connecting structure. This embodiment does not impose excessive limitations on this, and those skilled in the art can choose according to actual needs.

[0051] In one example, feed point 203 is located at the end of the first segment 21 furthest from the second portion 222, and ground point 204 is located on the connecting segment 23. Of course, it is understood that the positions of feed point 203 and ground point 204 can also be adjusted as needed, as long as it is ensured that the current of the bracket antenna 20 does not interfere with the frame antenna stub 10. This disclosure does not impose too many restrictions on this aspect.

[0052] In some embodiments, the antenna structure includes a plurality of frame antenna stubs 10, with a gap 13 provided between adjacent frame antenna stubs 10. For example, as shown... Figure 3As shown, the frame antenna stub 10 includes a first frame antenna stub 11 and a second frame antenna stub 12. A gap 13 is provided between the first frame antenna stub 11 and the second frame antenna stub 12, so that the frame is divided into two antenna radiators, the first frame antenna stub 11 and the second frame antenna stub 12, thereby radiating antenna signals of different frequency bands to meet diverse communication needs. Of course, it can be understood that, depending on the different requirements for signal frequency bands, the antenna structure may include more frame antenna stubs 10 and corresponding gaps 13 between two adjacent frame antenna stubs 10. This embodiment of the disclosure does not impose excessive restrictions on the specific number of frame antenna stubs 10 and gaps 13.

[0053] In one example, the first frame antenna stub 11 is used to radiate antenna signals in the GPS L1 band (1575.42MHz) and the WiFi 2.4G band (2.4GHz~2.4835GHz), the second frame antenna stub 12 is used to radiate antenna signals in the WiFi 5G band (5.15GHz~5.85GHz), and the bracket antenna 20 is used to radiate antenna signals in the GPS L5 band (1176.45MHz).

[0054] In some embodiments, the preset distance is greater than or equal to one-eighth of the operating wavelength λ of the support antenna 20, and less than or equal to the operating wavelength λ of the support antenna 20. The distance between the frame antenna stub 10 and the first side 201 of the support antenna 20 is greater than the preset distance, which is greater than or equal to 1 / 8λ and less than or equal to λ. If the distance between the frame antenna stub 10 and the first side 201 of the support antenna 20 is too small, the support antenna 20 and the frame antenna stub 10 will interfere with each other. If the distance is too large, it is not conducive to the compact layout of the whole device. When the preset distance is greater than or equal to 1 / 8λ and less than or equal to λ, it can ensure that the antenna performance is not affected, and the space occupied by the antenna can be saved as much as possible, so as to achieve a compact layout of the antenna structure.

[0055] The following will combine Figures 1-9 The technical effects of the technical solutions in the embodiments of this disclosure will be explained.

[0056] like Figure 5 and Figure 6 As shown, Figure 5 This is a schematic diagram of the current flow of the bracket antenna 20 when the frame antenna stub 10 operates in the GPS L1 band in related technologies. Figure 6 This is a schematic diagram of the current flow of the bracket antenna 20 under the operation of the frame antenna stub 10 in the GPS L1 band. Figure 5 and Figure 6The black circles represent strong current points, and the gray circles represent weak current points. The arrows indicate the current direction on the support antenna 20, flowing from weak current points to strong current points. (Combined with...) Figures 5-6 It can be seen that, in the GPS L1 band, the current direction on the frame antenna stub 10 is... Figures 5-6 From right to left, after adopting the technical solution of this disclosure embodiment, the position of the current weakness point is changed, thereby changing the current direction. Compared with the prior art, the current in the opposite direction to the frame antenna branch 10 on the bracket antenna 20 (that is, the current from left to right) is eliminated, thereby avoiding the current of the bracket antenna 20 from interfering with the frame antenna branch 10 and improving the antenna performance.

[0057] like Figure 7 and Figure 8 As shown, Figure 7 This is a schematic diagram showing the current flow of the bracket antenna 20 when the frame antenna stub 10 operates in the WiFi 2.4G band in related technologies. Figure 8 This is a schematic diagram of the current flow of the bracket antenna 20 operating in the WiFi 2.4G band in the frame antenna stub 10 of this disclosure. Figure 7 and Figure 8 The black circles represent strong current points, the gray circles represent weak current points, and the arrows indicate the current direction on the support antenna 20. (Combined with...) Figures 7-8 It can be seen that the current direction on the frame antenna stub 10 is... Figures 7-8 From left to right, under the WiFi 2.4G frequency band, after adopting the technical solution of this disclosure embodiment, the positions of the strong current point and the weak current point have changed. Although only part of the current reversed with the frame antenna branch 10 is eliminated, there is still a reverse current on the support antenna 20. However, the distance between the reverse current and the frame antenna branch 10 is increased, and the interference to the frame antenna branch 10 is greatly reduced, thereby improving the antenna performance.

[0058] like Figure 9 As shown, Figure 9 This is a comparison chart of antenna efficiency curves before and after adopting the technical solution of the present disclosure embodiment. Figure 9 The horizontal axis in the figure represents frequency in MHz, and the vertical axis represents antenna efficiency in dB. Curve a in the figure represents the antenna efficiency before adopting the technical solution of this disclosure embodiment, and curve b represents the antenna efficiency after adopting the technical solution of this disclosure embodiment. Comparing curves a and b, it can be seen that the technical solution of this disclosure embodiment has an improving effect on antenna performance in both the GPS L1 band and the WiFi 2.4G band. The antenna efficiency in the GPS L1 band is improved by about 0.6 dB, and the antenna efficiency in the WiFi 2.4G band is improved by about 0.5 dB. Furthermore, although... Figure 9Although not shown in the diagram, the technical solution of this disclosure embodiment can improve the performance of GPSL5 by approximately 0.1 dB, and the overall peak performance of the antenna is improved by approximately 0.4 dB. Therefore, the technical solution of this disclosure embodiment can improve antenna performance.

[0059] According to an exemplary embodiment, such as Figures 3-4 As shown, this disclosure provides an electronic device, characterized in that it includes a mid-frame 30 and a bracket (not shown in the figure), and an antenna structure as described in the above embodiment, wherein at least one frame antenna stub 10 of the antenna structure is disposed on the mid-frame 30, and the bracket antenna 20 is disposed on the bracket.

[0060] In some embodiments, the electronic device includes a camera (not shown), and a bracket is used to mount the camera. That is, the antenna 20 of the antenna structure is mounted on the camera bracket, thereby reducing the space occupied by the antenna structure. Of course, it is understood that the bracket can also be other plastic brackets within the electronic device, such as a microphone bracket or a separately mounted antenna bracket, etc. This disclosure does not impose too many limitations on this, and those skilled in the art can choose according to actual needs.

[0061] In this embodiment of the present disclosure, the electronic device is equipped with a bracket antenna 20 to enhance the frame antenna stub 10. The distance between the first side 201 of the bracket antenna 20 and the frame antenna stub 10 is greater than a preset distance, and the first side 201 is provided with an opening 24 to avoid the bracket antenna 20 interfering with the signal of the frame antenna stub 10, thereby improving the performance and radiation efficiency of the antenna and enhancing the user experience.

[0062] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include aspects of the art not disclosed herein.

[0063] The description and embodiments are based on common knowledge or conventional techniques. The true scope and spirit of this invention are indicated by the following claims.

[0064] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. An antenna structure, characterized in that, include: At least one frame antenna stub; A bracket antenna is disposed on one side of the frame antenna branch. An opening is provided on the first side of the bracket antenna near the frame antenna branch, and the opening exposes the second side of the bracket antenna. The first side and the second side are opposite to each other. The distance between the frame antenna branch and the first side of the bracket antenna is greater than a preset distance, and the preset distance is positively correlated with the operating wavelength of the bracket antenna.

2. The antenna structure according to claim 1, characterized in that, The support antenna includes at least one stalk, and the support antenna is provided with a clearance hole for avoiding a target object penetrating the support antenna. The at least one stalk is arranged around the clearance hole.

3. The antenna structure according to claim 2, characterized in that, The bracket antenna includes a feed point and a ground point. The ground point is located near the second side, and the feed point is located near the antenna stub of the frame.

4. The antenna structure according to claim 3, characterized in that, The bracket antenna includes a first segment and a second segment. The first segment extends along a first direction, the first part of the second segment extends along the first direction, and the second part of the second segment bends relative to the first part and extends along a second direction. There is a preset angle between the first direction and the second direction. The first segment is connected to the second part via a connecting segment.

5. The antenna structure according to claim 4, characterized in that, The feed point is located at the end of the first segment away from the second part, and the grounding point is located in the connecting segment.

6. The antenna structure according to claim 1, characterized in that, The bracket antenna is mounted on the bracket using laser engraving.

7. The antenna structure according to claim 1, characterized in that, The antenna structure includes multiple frame antenna stubs, and gaps are provided between adjacent frame antenna stubs.

8. The antenna structure according to claim 1, characterized in that, The preset distance is greater than or equal to one-eighth of the operating wavelength of the support antenna, and less than or equal to the operating wavelength of the support antenna.

9. An electronic device, characterized in that, The antenna includes a mid-frame and a support, and an antenna structure as described in any one of claims 1 to 6, wherein at least one frame antenna stub of the antenna structure is disposed on the mid-frame, and the support antenna is disposed on the support.

10. The electronic device according to claim 9, characterized in that, The electronic device includes a camera, and the bracket is used to mount the camera.

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