Antenna device and electronic equipment
By introducing a suspended stub into the antenna device and coupling it with the antenna radiator, the current is dispersed to reduce the SAR value, thus solving the problem of electromagnetic radiation affecting the human body in the prior art, while maintaining communication performance.
Patent Information
- Application Number
- CN202423053436.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-10
AI Technical Summary
Existing technologies, when reducing the impact of electromagnetic radiation from wireless communication terminals on the human body, typically employ power back-off, which leads to a decline in communication performance and makes it difficult to maintain communication quality while meeting SAR standards.
By introducing suspended stubs into the antenna device and coupling them with the antenna radiator, the current is dispersed to reduce the magnetic field and lower the SAR value without affecting communication performance.
By using the design of suspended branches, the SAR value is effectively reduced by 68% while maintaining communication efficiency and quality.
Smart Images
Figure CN223566868U_ABST
Abstract
Description
Technical Field
[0001] This application relates primarily to the field of communication technology, and in particular to antenna devices and electronic equipment. Background Technology
[0002] With the development of wireless communication technology and the increasing prevalence of smart devices, people are paying more and more attention to the impact of electromagnetic radiation generated by wireless communication terminals on human health while enjoying the various conveniences they bring. Generally, in the antenna design process, the SAR (Specific Absorption Rate) index is used to evaluate the impact of electromagnetic radiation generated by wireless communication terminals on the human body.
[0003] To meet SAR standards, most related technologies reduce SAR values through power back-off, which in turn leads to a decrease in communication performance. Utility Model Content
[0004] The main purpose of this application is to provide antenna devices and electronic equipment to solve the problem that excessive reduction of SAR can lead to a decrease in communication performance, so as to reduce the absorption rate of electromagnetic radiation by the human body while meeting the communication performance requirements.
[0005] To address the aforementioned problems, this application provides an antenna device and an electronic device. The antenna device is applied to an electronic device and includes: a housing; an antenna radiator disposed inside the housing; and a levitating stub disposed outside the housing and spaced apart from the antenna radiator. The levitating stub is used to couple with the antenna radiator to disperse the current generated by the antenna radiator.
[0006] To address the aforementioned problems, this application also provides an electronic device that includes an antenna device as described in any of the embodiments above.
[0007] The antenna device provided in this application is applied to electronic equipment. The antenna device includes: a housing; an antenna radiator disposed inside the housing; and a levitating stub disposed inside the housing and spaced apart from the antenna radiator. The levitating stub is used to couple with the antenna radiator to disperse the current generated by the antenna radiator. By using the levitating stub to couple with the antenna radiator, the current on the antenna radiator is dispersed, thereby reducing the magnetic field near the levitating stub and achieving SAR reduction without compromising communication quality. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:
[0009] Figure 1 This is a schematic diagram of the structure of the first embodiment of the antenna device provided in this application;
[0010] Figure 2 This is a schematic diagram of the structure of the first embodiment of the suspended branch provided in this application;
[0011] Figure 3 This is a schematic diagram of the structure of the second embodiment of the suspended branch provided in this application;
[0012] Figure 4 This is a structural schematic diagram of the third embodiment of the suspended branch provided in this application;
[0013] Figure 5 This is a structural schematic diagram of the fourth embodiment of the suspended branch provided in this application;
[0014] Figure 6 This is a structural schematic diagram of the fifth embodiment of the suspended branch provided in this application;
[0015] Figures 7a-7b These are schematic diagrams of the antenna device provided in the second embodiment from different perspectives;
[0016] Figures 8a-8b This is a schematic diagram of experimental data from one embodiment of the antenna device provided in this application;
[0017] Figure 9 This is a simulation diagram of one embodiment of the antenna device provided in this application;
[0018] Figures 10a-10b This is an experimental simulation diagram of one embodiment of the antenna device provided in this application;
[0019] Figure 11 This is a schematic diagram of the structure of an embodiment of the electronic device provided in this application.
[0020] Icon labels:
[0021] 100. Antenna device; 10. Housing; 20. Antenna radiator; 30. Suspended branch; 31. Connecting part; 32. First hollow area; 33. Second hollow area; 34. Third hollow area; 200. Electronic equipment. Detailed Implementation
[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0023] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.
[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0025] SAR (Specific Absorption Scale) is an indicator that measures the degree to which electromagnetic radiation energy is absorbed by human tissue. SAR is an important parameter used to assess the impact of electromagnetic radiation generated by wireless devices such as mobile phones on human health during use, and to ensure that these devices comply with international and regional safety standards. Government departments and relevant telecommunications regulatory agencies in various countries have clear regulations on SAR values to ensure the safe operation of wireless communication equipment and the health of users. The International Commission on Non-Ionizing Radiation Protection (ICNIRP), the International Telecommunication Union (ITU), and the World Health Organization (WHO) recommend the use of SAR as a standard. Different regions and countries have different SAR standards. For example, the FCC in North America adopts the IEEE standard, while the standard recommended by the European ICNIRP is an average SAR value of no more than 2 watts per 10 grams of human tissue.
[0026] Therefore, this application is made in order to meet SAR standards and ensure that the electromagnetic radiation of the equipment during operation has a safety impact on the human body, and on this basis, without reducing the communication quality of the communication equipment.
[0027] See Figure 1 As shown, Figure 1This is a schematic diagram of the structure of the first embodiment of the antenna device provided in this application; wherein, the antenna device 100 is applied to an electronic device 200, and the antenna device 100 includes: a housing 10; an antenna radiator 20, which is disposed on the housing 10 and located on the inner side of the housing; and a suspended stub 30, which is disposed on the housing and located on the outer side of the housing, with the suspended stub 30 and the antenna radiator 20 spaced apart. In this embodiment, the inner side of the housing 10 refers to the side of the housing 10 closer to the inside of the electronic device, and the outer side of the housing 10 refers to the side farther away from the inside of the electronic device; wherein, the suspended stub 30 is used to couple with the antenna radiator 20 to disperse the current generated by the antenna radiator 20.
[0028] like Figure 1 As shown, the outer casing 10, antenna radiator 20, and suspended stub 30 are stacked and indirectly connected through the outer casing 10 and antenna radiator 20. To minimize the impact on the communication quality of the communication equipment, the suspended stub 30 is positioned opposite to the current peak location of the antenna radiator 20. The current peak location of the antenna radiator 20 refers to the area corresponding to the current high point on the antenna radiator 20, where the current high point is the point where the current value is greater than a predetermined current value.
[0029] In antenna design, a branch typically refers to a smaller structure derived from the main antenna radiator 20, used to improve antenna performance. For example, in the design of a microstrip omnidirectional antenna, by loading a λg / 4 short-circuit matching branch at the top of the antenna, the impedance matching of the antenna can be improved, the voltage standing wave ratio (VSWR) can be reduced, and the antenna gain can be increased. The use of branches provides an effective means of adjusting and optimizing antenna performance without changing the main antenna structure.
[0030] By using the above method, the levitation stub 30 is coupled to the antenna radiator 20 by setting a levitation stub 30 on the outer shell 10, thereby dispersing the current on the antenna radiator 20, maintaining the current balance on the antenna, optimizing the radiation characteristics of the antenna, and reducing the magnetic field near the levitation stub 30, thereby achieving the effect of reducing SAR without reducing communication quality.
[0031] The different morphological structures of the suspended branch 30 are described in detail below:
[0032] In one embodiment, such as Figure 1 As shown, the suspended branch 30 has a quadrilateral structure. The suspended branch 30 is directly mounted on the outer shell 10.
[0033] In one embodiment, such as Figure 2 As shown, Figure 2This is a schematic diagram of the structure of the first embodiment of the suspended branch provided in this application; wherein, there is a gap between the suspended branch 30 and the outer shell 10, the suspended branch 30 is suspended on the outer shell 10, and the opposite sides of the suspended branch 30 are connected to the outer shell 10. By setting the gap, the load capacity of the suspended branch 30 can be reduced.
[0034] In one embodiment, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of the second embodiment of the suspended branch provided in this application; wherein, one or both sides of the suspended branch 30 extend outward to form a connecting portion 31. It can be understood that the outer shell 10 and the suspended branch 30 can be connected through the extended connecting portion 31.
[0035] In one embodiment, such as Figure 2 and Figure 3 As shown, there is a gap between the suspended branch 30 and the outer shell 10. The suspended branch 30 is suspended on the outer shell 10 and is connected to the outer shell 10 through the connecting part 31.
[0036] In this embodiment, the suspended branch 30 can be connected to the outer casing 10 via the extended connecting portion 31. In other embodiments, one or more opposite sides of the suspended branch 30 extend outward to form a plurality of connecting portions 31, and the suspended branch 30 can be connected to the outer casing 10 by the plurality of connecting portions 31, such as... Figure 4 As shown, Figure 4 This is a structural schematic diagram of the third embodiment of the suspended branch provided in this application; specifically, the number and shape of the connecting parts 31 can be set according to actual conditions, for example, 2, 3, 4 or other numbers of connecting parts 31 can be provided on one side. In some embodiments, the number and / or structure of the connecting parts 31 on one opposite side may be different, for example, one side is provided with 2 connecting parts 31 and the other opposite side is provided with 3 connecting parts 31.
[0037] In one embodiment, such as Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of the fourth embodiment of the suspended branch provided in this application; wherein, the suspended branch 30 includes: a first hollow area 32; wherein, the first hollow area 32 is the charging interface area corresponding to the electronic device 200, and the structure of the first hollow area 32 and the charging interface area are similar.
[0038] In some embodiments, since the antenna and the levitation stub 30 are located at the bottom of the device, including areas such as the charging port, an opening needs to be made in the levitation stub 30 when considering the structural design. Because of this opening, the perforated opening on the levitation stub 30 needs to be as similar as possible to the opening structure of the charging port.
[0039] In one embodiment, such as Figure 6 As shown, Figure 6 This is a structural schematic diagram of the fifth embodiment of the suspended branch provided in this application; wherein, the suspended branch 30 includes: a second hollow area 33; wherein, the second hollow area 33 and the first hollow area 32 are arranged adjacent to each other.
[0040] Specifically, in some embodiments, in order to correspond with the structure of the outer shell 10 or to reduce the material structure, a second hollow area 33 is provided in the part of the suspended branch 30, and the outer shell 10 is connected accordingly by providing the second hollow area 33.
[0041] In one embodiment, the suspended branch 30 and the outer shell 10 are an integral structure.
[0042] Understandably, in this embodiment, the suspended branch 30 and the outer shell 10 are integrally formed, and the separated suspended branch 30 is engraved on the outer area of the shell using LDS laser engraving. LDS laser engraving, or Laser Direct Structuring, is a process that uses laser engraving to form circuit patterns on the surface of injection-molded plastic parts.
[0043] See Figures 7a-7b As shown, Figures 7a-7b This is a structural schematic diagram of the antenna device provided in the second embodiment from different perspectives; it can be understood that in this embodiment, it is a specific implementation scheme of this application in an electronic device 200. Further, as... Figures 8a-8b As shown, Figures 8a-8b This is a schematic diagram of experimental data from one embodiment of the antenna device provided in this application. As can be seen from the schematic diagram, the S11 efficiency of the antenna radiator 20 body does not change significantly before and after the addition of the suspended stub 30. Therefore, it can be concluded that the design of the suspended stub 30 added to the outer shell 10 in this application will not have a significant impact on the efficiency and quality of communication.
[0044] In the above schemes, such as Figure 7a As shown, a third hollow area 34 can be set on the suspended branch 30. The third hollow area 34 is an array of diagonal hollows.
[0045] Through the above solutions, combined with Figure 9 As shown, Figure 9 This is a simulation diagram of an embodiment of the antenna device provided in this application; wherein, from Figure 9 As can be seen, after adding the levitating stub 30, the levitating stub 30 will disperse part of the current of the antenna radiator 20, thereby reducing the magnetic field at the bottom of the device and achieving the effect of reducing SAR.
[0046] Finally, the above-described embodiments were verified, such as... Figures 10a-10b As shown, Figures 10a-10b This is an experimental simulation diagram of an embodiment of the antenna device provided in this application; wherein, Figure 10a For the original model, Figure 10b To add a suspended branch 30 to the model; in this scheme, the antenna radiator 20 is positioned at 0mm above the human tissue model, the peak transmit power of the antenna is 24dBm, and the original model has a SAR value of 3.793W / KG at 1.75GHz for 10g; Figure 10b After adding the floating stub 30, the SAR value is 1.197 W / KG, which reduces the SAR by 68%. This shows that adding the floating stub 30 to the outer shell 10 can effectively reduce the SAR, thus solving the problem of reduced antenna performance caused by reducing the SAR value of the antenna radiator 20 in the traditional scheme.
[0047] To address the aforementioned problems, this application also provides an electronic device 200, see reference. Figure 11 As shown, Figure 11 This is a schematic diagram of an embodiment of the electronic device 200 provided in this application; wherein the electronic device 200 includes: an antenna device 100; wherein the antenna device 100 is the antenna device 100 described in any of the above embodiments.
[0048] This application provides an antenna device 100, which is applied to an electronic device 200. The antenna device 100 includes: a housing 10; an antenna radiator 20 disposed inside the housing 10; and a suspending stub 30 disposed outside the housing and spaced apart from the antenna radiator. The suspending stub is used to couple with the antenna radiator to disperse the current generated by the antenna radiator.
[0049] By setting a spur 30 on the outer shell 10, the spur 30 disperses part of the current on the antenna radiator 20, thereby reducing the magnetic field at the bottom and achieving the effect of reducing SAR without reducing communication quality.
[0050] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. An antenna device, characterized in that, The antenna device is used in an electronic device, and the antenna device includes: shell; An antenna radiator is disposed inside the housing; Suspended stubs are disposed on the outside of the housing and spaced apart from the antenna radiator; The suspended stub is used to couple with the antenna radiator to disperse the current generated by the antenna radiator.
2. The antenna device according to claim 1, characterized in that, The suspended stub is positioned opposite to the location of the current peak of the antenna radiator.
3. The antenna device according to claim 1, characterized in that, The suspended branches have a quadrilateral structure.
4. The antenna device according to claim 3, characterized in that, There is a gap between the suspended branch and the outer shell, the suspended branch is suspended on the outer shell, and the opposite sides of the suspended branch are connected to the outer shell.
5. The antenna device according to claim 3, characterized in that, The suspended branch extends outward from one opposite side to form a connecting part.
6. The antenna device according to claim 5, characterized in that, There is a gap between the suspended branch and the outer shell. The suspended branch is suspended on the outer shell and is connected to the outer shell through the connecting part.
7. The antenna device according to claim 1, characterized in that, The suspended branches include: First hollowed-out area; The first hollowed-out area is the charging interface area corresponding to the electronic device.
8. The antenna device according to claim 7, characterized in that, The suspended branches include: Second hollowed-out area; The second hollow area and the first hollow area are arranged adjacent to each other.
9. The antenna device according to claim 1, characterized in that, The suspended branch and the outer shell are integrally formed.
10. An electronic device, characterized in that, The electronic device includes the antenna device as described in any one of claims 1-9.