Antenna assembly and electronic device
By designing a multi-radiator antenna assembly and employing specific arrangement and coupling methods, the antenna coverage problem within a limited space was solved, achieving full coverage of low-frequency, mid-high-frequency, and N78 frequency bands, thus improving the communication performance in landscape gaming scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
- Filing Date
- 2022-10-21
- Publication Date
- 2026-06-26
Smart Images
Figure CN115642390B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of communication technology, and in particular to an antenna assembly and an electronic device having said antenna assembly. Background Technology
[0002] Currently, with the widespread adoption of 5G antennas, electronic devices are containing an increasing number of antennas. Furthermore, the increasing prevalence of full-screen and curved screens is leaving less and less space for antennas. Meanwhile, users are placing increasingly demanding requirements on mobile communication performance and user experience, especially with landscape gaming becoming a primary usage scenario. Therefore, the increasing prevalence of users holding their phones horizontally, and the need to ensure that antenna design meets the communication performance requirements of landscape gaming within limited space, has become a crucial consideration. Summary of the Invention
[0003] This application provides an antenna assembly and electronic device that can effectively improve communication performance requirements in landscape gaming scenarios.
[0004] In a first aspect, an antenna assembly is provided, comprising a first radiator, a second radiator, and a third radiator. The first radiator includes a first feed point, and is divided into a first radiating branch and a second radiating branch via the first feed point. The first and second radiating branches are used to support the transmission and reception of electromagnetic wave signals in at least the mid-to-high frequency band. The second radiator is spaced apart from the first radiator, and includes a second feed point. The second radiator is divided into a third and a fourth radiating branch via the second feed point. The third radiating branch is adjacent to and spaced apart from the second radiating branch of the first radiator. The third and fourth radiating branches are used to support the transmission and reception of electromagnetic wave signals in at least the low-frequency band. The third radiator is adjacent to and spaced apart from the third radiating branch, and is coupled to support the transmission and reception of electromagnetic wave signals in at least the N78 frequency band.
[0005] Secondly, an electronic device is also provided, comprising an antenna assembly. The antenna assembly includes a first radiator, a second radiator, and a third radiator. The first radiator includes a first feed point, and the first radiator is divided into a first radiating branch and a second radiating branch through the first feed point, wherein the first radiating branch and the second radiating branch are used to support the transmission and reception of electromagnetic wave signals in at least the mid-to-high frequency band. The second radiator is spaced apart from the first radiator, and the second radiator includes a second feed point, and the second radiator is divided into a third radiating branch and a fourth radiating branch through the second feed point, wherein the third radiating branch is adjacent to and spaced apart from the second radiating branch of the first radiator, and wherein the third radiating branch and the fourth radiating branch are used to support the transmission and reception of electromagnetic wave signals in at least the low frequency band. The third radiator is adjacent to and spaced apart from the third radiating branch, and the third radiator is coupled to the third radiating branch to support the transmission and reception of electromagnetic wave signals in at least the N78 frequency band.
[0006] The antenna assembly and electronic device of this application can achieve full coverage of low frequency, mid-high frequency and N78 frequency band, and can effectively meet the communication performance requirements in landscape gaming scenarios. Attached Figure Description
[0007] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.
[0008] Figure 1 This is a schematic diagram of an antenna assembly from a first-view perspective in one embodiment of this application.
[0009] Figure 2 This is a schematic diagram of the antenna assembly in one embodiment of this application from a second perspective.
[0010] Figure 3 This is a plan view of an electronic device according to an embodiment of this application.
[0011] Figure 4 This is a schematic side view of the antenna assembly of an electronic device according to an embodiment of this application.
[0012] Figure 5 For the purposes of this application Figure 3 The diagram shows a cross-section cut along section line II.
[0013] Figure 6 For the purposes of this application Figure 3 The diagram shows a cross-section cut along section line II-II.
[0014] Figure 7 This is a schematic diagram of the circuit structure of the matching circuit in one embodiment of this application.
[0015] Figure 8 The figure shows the S-parameters and overall efficiency curves of a reference antenna assembly obtained through simulation in the low-frequency, mid-high-frequency, and N78 frequency bands.
[0016] Figure 9 The above are the S-parameters and overall efficiency curves of the antenna assembly in one embodiment of this application, obtained through simulation, in the low-frequency, mid-high-frequency, and N78 frequency bands.
[0017] Figure 10 This is a schematic diagram of the S-parameter curve of an antenna assembly in one embodiment of this application.
[0018] Figure 11 This is a current distribution diagram of the antenna assembly in one embodiment of this application when it operates at 1.8 GHz.
[0019] Figure 12 This is a current distribution diagram of the antenna assembly in one embodiment of this application when it operates at 2.6 GHz.
[0020] Figure 13 This is a current distribution diagram of the antenna assembly in one embodiment of this application when it operates at 3.5 GHz.
[0021] Figure 14 This is a current distribution diagram of the antenna assembly in one embodiment of this application when it operates at 0.73 GHz.
[0022] Figure 15 This is a current distribution diagram of the antenna assembly in one embodiment of this application when it operates at 2.2 GHz. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] In the description of the embodiments of this invention, it should be understood that the terms "upper," "lower," "thickness," "width," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not imply or indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The term "connection" in this application includes relationships such as direct connection and indirect connection.
[0025] Please see Figure 1This is a schematic diagram of the antenna assembly 100 in one embodiment of this application from a first-view perspective. Figure 1 As shown, the antenna assembly 1 includes a first radiator 11, a second radiator 12, and a third radiator 13. The first radiator 11 includes a first feed point K1, and is divided into a first radiating branch 111 and a second radiating branch 112 via the first feed point K1. The first radiating branch 111 and the second radiating branch 112 are used to support the transmission and reception of electromagnetic wave signals in at least the mid-to-high frequency band. The second radiator 12 is spaced apart from the first radiator 11, and includes a second feed point K2. The second radiator 12 is divided into a third radiating branch 121 and a fourth radiating branch 122 via the second feed point K2. The third radiating branch 121 is adjacent to and spaced apart from the second radiating branch 112 of the first radiator 11, and the third radiating branch 121 and the fourth radiating branch 122 are used to support the transmission and reception of electromagnetic wave signals in at least the low frequency band. The third radiator 13 is located adjacent to and spaced apart from the third radiating branch 121, and the third radiator 13 is coupled to the third radiating branch 121 to support the transmission and reception of electromagnetic wave signals in at least the N78 frequency band.
[0026] Therefore, the antenna assembly 100 described above in this application can achieve full coverage of low frequency, mid-high frequency and N78 frequency band, and can effectively meet the communication performance requirements in landscape gaming scenarios.
[0027] The low frequency may include frequency bands such as N42 and N28, and the mid-to-high frequency may include frequency bands such as B1, B3, B39, B40, and B41.
[0028] Among them, such as Figure 1 As shown, the first radiator 11 and the second radiator 12 are arranged along a first direction, and the third radiator 13 and the third radiating branch 121 are arranged along a second direction, wherein the first direction and the second direction are substantially perpendicular. That is, in some embodiments, the arrangement direction of the first radiator 11 and the second radiator 12 and the arrangement direction of the third radiator 13 and the third radiating branch 121 are substantially perpendicular.
[0029] In this application, the first radiator 11 and the second radiator 12 are arranged along a first direction, and the third radiator 13 and the third radiating branch 121 are arranged along a second direction. The first direction and the second direction are approximately perpendicular, meaning that the first radiator 11 and the third radiator 13 are located on different sides of the third radiating branch 121, and do not need to be strictly perpendicular. For example, as... Figure 1As shown in the perspective, the first radiator 11 is located above the third radiating branch 121, while the third radiator 13 is located to the right of the third radiating branch 121. The "upper" and "right" are merely... Figure 1 Orientation in the view shown.
[0030] Therefore, since the arrangement directions of the first radiator 11 and the second radiator 12 are approximately perpendicular to the arrangement directions of the third radiator 13 and the third radiating branch 121, the third radiator 13 can be relatively far from both the first radiating branch 111 and the second radiating branch 112 in the first radiator 11. Thus, it can effectively reduce or even eliminate interference to the first radiating branch 111 and the second radiating branch 112 in the first radiator 11, thereby reducing or even eliminating interference to the mid-to-high frequency band.
[0031] The first radiator 11, the second radiator 12, and the third radiator 13 are elongated, with the length directions of the first radiator 11 and the second radiator 12 parallel to the first direction, and the length direction of the third radiator 13 parallel to the second direction.
[0032] Therefore, since the length direction of the third radiator 13 is parallel to the second direction, that is, parallel to the arrangement direction of the third radiator 13 and the third radiating branch 121, the third radiator 13 is coupled to the third radiating branch 121 through its short side end 131. Thus, the feed signal connected to the second feed point K2, after being coupled to the third radiator 13 through the third radiating branch 121, excites the third radiator 13 to radiate electromagnetic wave signals from its other short side end, which is far from the third radiating branch 121. The electrical length is approximately equal to the length of the third radiator 13 along its length direction, effectively increasing the electrical length and thus helping to reduce the size of the radiator.
[0033] In some embodiments, such as Figure 1 As shown, the short end 131 of the third radiator 13 is specifically aligned with and coupled to the end of the third radiating branch 121 that is furthest from the second feed point K2. Therefore, the feed signal received at the second feed point K2 must pass completely through the third radiating branch 121 before being coupled to the third radiator 13, effectively increasing the overall electrical length and thus helping to reduce the size of the radiator.
[0034] Please refer to the following: Figure 2 This is a schematic diagram of a second viewpoint of the antenna assembly 1 in one embodiment of this application. The second viewpoint is a schematic diagram viewed from the side of the first radiator 11 and the second radiator 12 away from the third radiator 13.
[0035] The first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122 are all elongated. The length direction of the first radiating branch 111 and the second radiating branch 112 is the length direction of the first radiator 11, and the length direction of the third radiating branch 121 and the fourth radiating branch 122 is the length direction of the second radiator 12. At least one of the first radiating branch 111 and the second radiating branch 112 has a larger dimension in the width direction than the fourth radiating branch 122.
[0036] The width direction refers to the direction that is perpendicular to both the first direction and the second direction.
[0037] Therefore, by making at least one of the first radiating branches 111 and the second radiating branches 112 larger in the width direction than the fourth radiating branch 122 in the width direction, the electrical length of at least one of the first radiating branches 111 and the second radiating branches 112 can be effectively increased. This allows the first radiating branches 111 and the second radiating branches 112 to have smaller dimensions in the first direction, while maintaining substantially the same electrical length or even having a longer electrical length.
[0038] Please refer to the following: Figure 3 and Figure 4 , Figure 3 This is a plan view of an electronic device 100 according to an embodiment of this application. Figure 4 This is a schematic side view of the antenna assembly 1 of an electronic device 100 according to an embodiment of this application. Figure 3 As shown, the electronic device 100 includes the antenna assembly 1. Wherein, Figure 3 This is a top view schematic diagram illustrating the structure of the antenna assembly 1 as seen from the display screen side of the electronic device 100. The aforementioned... Figure 1 The antenna assembly 1 shown in the diagram, representing the first viewpoint, is actually also the antenna assembly 1 viewed from the side of the display screen of the electronic device 100. Among these, Figure 1 and Figure 3 From the perspective of the antenna assembly 1, the dimensions of the first radiator 11 and the second radiator 12 along the second direction are equal to the thickness of the first radiator 11 and the second radiator 12 of the antenna assembly 1. This thickness is generally small, so the first radiator 11 and the second radiator 12 are flat straight strips.
[0039] Among them, such as Figure 1 As shown, the first radiator 11 and the second radiator 12 are separated by a gap F1.
[0040] The electronic device 100 further includes a frame 2, the first radiator 11 and the second radiator 12 of the antenna assembly 1 are disposed on the frame 2 of the electronic device 100, and the third radiator 13 is disposed inside the electronic device 100 and adjacent to the third radiating branch 121 in the second radiator 12.
[0041] In some embodiments, the frame 2 of the electronic device 100 is a metal frame, the first radiator 11 and the second radiator 12 are two metal frame segments formed by opening the gap F1 in the metal frame of the electronic device 100, and the third radiator 13 is a metal body disposed inside the electronic device 100.
[0042] In other embodiments, the frame 2 of the electronic device 100 is a non-metallic frame, the first radiator 11 and the second radiator 12 are metal segments disposed in the frame of the electronic device 100, and the first radiator 11 and the second radiator 12 are spaced apart by the gap F1, and the third radiator 13 is a metal body disposed inside the electronic device 100.
[0043] That is, in other embodiments, the frame 2 of the electronic device 100 may also be a non-metallic frame with low conductivity, such as plastic, ceramic, etc. The first radiator 11 and the second radiator 12 are metal segments disposed in the frame 2 of the electronic device 100.
[0044] The first radiator 11 and the second radiator 12 may be embedded in the frame of the electronic device 100 or disposed on the inner side of the frame of the electronic device 100.
[0045] like Figure 3 As shown, the electronic device 100 also includes a circuit board 3, and the third radiator 13 may be a metal body disposed on the circuit board 3. For example, the third radiator 13 may be formed on the circuit board 3 by laser engraving or other processes. Alternatively, the third radiator 13 may be an FPC (flexible printed circuit board) antenna disposed on the circuit board 3. Here, an FPC antenna refers to a metal antenna pattern formed on an FPC, and the FPC antenna may be fixed to the circuit board 3 by means of bonding, embedding, soldering, etc.
[0046] like Figure 3As shown, the electronic device 100 includes a long side B1 and a short side B2, and the antenna assembly 1 can be disposed at the position of the long side B1 of the electronic device 100. That is, the first radiator 11 and the second radiator 12 of the antenna assembly 1 are disposed in the frame 2 of the electronic device 100 located on the long side B1, and the third radiator 13 is disposed inside the electronic device 100 and adjacent to the third radiating branch 121 in the second radiator 12.
[0047] The first direction can be a direction parallel to the extension direction of the long side B1, and the second direction can be a direction parallel to the extension direction of the short side B2.
[0048] In some embodiments, the first radiator 11, the second radiator 12, and the third radiator 13 may all be disposed on the circuit board 3, and the first radiator 11 and the second radiator 12 are disposed near the frame 2 of the long side B1.
[0049] Among them, such as Figure 3 When the frame 2 of the electronic device 100 is a metal frame, the metal frame of the electronic device 100 also has other gaps (not labeled in the figure) to separate the first radiator 11 and the second radiator 12 from other parts of the metal frame of the electronic device 100.
[0050] in, Figure 4 The side view of the electronic device 100 shown. Figure 4 The antenna assembly 1 shown in the diagram is... Figure 2 Antenna assembly 1 is shown in the second viewpoint.
[0051] Among them, such as Figure 4 As shown, the electronic device 100 includes a display screen 4 and a back cover 5, and the arrangement direction of the display screen 4 and the back cover 5 is the thickness direction of the electronic device 100. The aforementioned width direction is perpendicular to both the first direction and the second direction, which is also the thickness direction of the electronic device 100.
[0052] That is, in some embodiments, at least one of the first radiating branch 111 and the second radiating branch 112 has a larger dimension in the thickness direction of the electronic device 100 than the dimension of the fourth radiating branch 122 in the thickness direction of the electronic device 100.
[0053] The dimension of the fourth radiating branch 122 in the width direction can be the same as the dimension of the frame 2 in the thickness direction of the electronic device 100, that is, the dimension of the fourth radiating branch 122 in the width direction is the dimension in existing conventional designs. By setting the dimension of at least one of the first radiating branch 111 and the second radiating branch 112 in the width direction to be greater than the dimension of the fourth radiating branch 122 in the width direction, the electrical length of at least one of the first radiating branch 111 and the second radiating branch 112 can be effectively increased. This allows the dimensions of the first radiating branch 111 and the second radiating branch 112 in the first direction to be smaller, while maintaining a substantially the same electrical length or even having a longer electrical length.
[0054] Please refer to the following: Figure 2 , Figure 4 as well as Figure 5 ,in, Figure 5 For the purposes of this application Figure 3 The diagram shows a cross-sectional view taken along section line II. In some embodiments, the first radiator 11 and the second radiator 12 are coplanar, and the first long side C1 of the first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122 are flush. At least one of the first radiating branch 111 and the second radiating branch 112 extends a predetermined distance along the width direction away from the first long side C1 on the second long side C2 to form an extension Y1, wherein the second long side C2 and the first long side C1 are opposite sides. That is, in some embodiments, at least one of the first radiating branch 111 and the second radiating branch 112 extends a predetermined distance along the width direction away from the first long side C1 on the second long side C2 relative to the fourth radiating branch 122 to form the extension Y1, thereby having a dimension in the width direction larger than the dimension in the width direction of the fourth radiating branch 122.
[0055] Wherein, the first radiating branch 111 and the second radiating branch 112, when they do not have the extension Y1, have the same structure and size as the fourth radiating branch 122, for example, they are the border portion of the metal frame in the existing conventional design.
[0056] Among them, such as Figure 4As shown, the first long side C1 of the first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122 is located near the display screen 4 of the electronic device 100, and the line connecting the first long side C1 of the first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122 is approximately parallel to the screen surface of the display screen 4. The second long side C2 of the first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122 is located near the back cover 5 of the electronic device 100.
[0057] Typically, the dimension of the frame 2 in the thickness direction of the electronic device 100 is smaller than the thickness of the electronic device 100, and the end of the frame 2 near the back shell 5 of the electronic device 100 is usually a certain distance away from the back shell 5. Therefore, at least one of the first radiating branch 111 and the second radiating branch 112 extends a predetermined distance along the width direction away from the first long side C1 on the second long side C2, thereby increasing the width of at least one of the first radiating branch 111 and the second radiating branch 112.
[0058] Figure 3 Section line II in the diagram is a section line passing through the first radiating branch 111, and it is assumed that at least one of the first radiating branch 111 and the second radiating branch 112 includes the first radiating branch 111. For example... Figure 5 As shown, extending at least one of the first radiating branch 111 and the second radiating branch 112 a predetermined distance along the width direction away from the first long side C2 may include: extending at least one of the first radiating branch 111 and the second radiating branch 112 a first predetermined distance along the second direction towards the side where the third radiator is located on the second long side C2 to form a first extension segment Y11, and then extending a second predetermined distance along the direction away from the first long side C1 to form a second extension segment Y12, thereby forming the extension Y1, that is, the extension Y1 includes the first extension segment Y11 and the second extension segment Y12.
[0059] Among them, such as Figure 5 As shown, extending the second preset distance along the direction away from the first long side C1 can specifically be extending the second preset distance along the direction away from the first long side C1 and in a direction that deviates from the direction away from the first long side C1 by a preset angle, thereby forming the second extension segment Y12. The preset angle is an angle greater than 0 and less than or equal to 90 degrees.
[0060] That is, at least one of the first radiating branch 111 and the second radiating branch 112 extends a first preset distance inward toward the inside of the electronic device 100 along a direction parallel to the display screen of the electronic device 100 on the second long side C2, and then extends a second preset distance in a specific direction, wherein the specific direction is the direction in which the thickness direction of the electronic device 100 deviates from the inside of the electronic device 100 by a preset angle, and the preset angle is an angle greater than 0 and less than or equal to 90 degrees.
[0061] The second extension segment Y12 may be an arc-shaped segment, and the center of curvature is located on one side of the third radiator 13, that is, the second extension segment Y12 may be curved and extended into the interior of the electronic device 100.
[0062] Among them, such as Figure 2 and Figure 4 As shown, in some embodiments, the dimensions of the first radiating branch 111 and the second radiating branch 112 in the width direction are both larger than the dimension of the fourth radiating branch 122 in the width direction.
[0063] Obviously, in other embodiments, only the first radiating branch 111 may be larger in width direction than the fourth radiating branch 122, or only the second radiating branch 112 may be larger in width direction than the fourth radiating branch 122.
[0064] Please refer to the following: Figure 2 , Figure 4 as well as Figure 6 , Figure 6 For the purposes of this application Figure 3 The diagram shows a cross-sectional view taken along section line II-II. In some embodiments, such as... Figure 2 , Figure 4 as well as Figure 6 As shown, the dimension of the third radiating branch 121 in the width direction is also larger than the dimension of the fourth radiating branch 122 in the width direction.
[0065] Therefore, by setting the dimension of the third radiating branch 121 in the width direction to be larger than that of the fourth radiating branch 122 in the width direction, the electrical length of the third radiating branch 121 can also be effectively increased. This allows the third radiating branch 121 to have a smaller dimension in the first direction while maintaining a substantially the same electrical length or even having a longer electrical length.
[0066] Through the above design, that is, by making at least one of the first radiating branches 111 and the second radiating branches 112 larger in the width direction than the fourth radiating branch 122 in the width direction, and / or by making the third radiating branch 121 larger in the width direction than the fourth radiating branch 122 in the width direction, the dimensions of at least one of the first radiating branches 111 and the second radiating branches 112 and the third radiating branch 121 in the first direction, that is, their length direction, can be reduced, which is beneficial to the miniaturization of the antenna. The antenna assembly 1 can be set in the increasingly narrow clearance area of the electronic device 100. At this time, although the distance between the first feed point K1 and the second feed point K2 is reduced, the electrical length of these radiating branches can remain basically unchanged or even longer, which can effectively ensure the antenna performance.
[0067] Wherein, when the dimension of the third radiating branch 121 in the width direction is also greater than the dimension of the fourth radiating branch 122 in the width direction, the structure of the third radiating branch 121 is substantially the same as at least one of the first radiating branch 111 and the second radiating branch 112, which are described above as having a dimension in the width direction greater than that of the fourth radiating branch 122.
[0068] That is, as described above, the first radiator 11 and the second radiator 12 are coplanar, and the first long side C1 of the first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122 are flush. The third radiating branch 121 extends a predetermined distance along the width direction away from the first long side C1 on the second long side C2 to form an extension Y2, wherein the second long side C2 and the first long side C1 are opposite sides.
[0069] Wherein, the third radiating branch 121, without the extension Y2, may have the same structure and size as the fourth radiating branch 122, for example, both being the border portion of a metal frame in a conventional design.
[0070] The first radiator 11 and the second radiator 12 are coplanar, meaning that the surfaces with the largest areas of the first radiator 11 and the second radiator 12 are approximately on the same plane. As mentioned earlier, the first radiator 11 and the second radiator 12 are disposed on the frame 2 of the electronic device 100. The surface with the largest area of the first radiator 11 and the second radiator 12 is the surface parallel to the side of the frame 2, that is, the surface where each side is parallel to the aforementioned length direction and width direction. Further, the length of the first radiator 11 and the second radiator 12 is in the direction of the long side B1, and the width of the first radiator 11 and the second radiator 12 is in the aforementioned width direction, that is, the thickness direction of the electronic device 100. The plane containing the length and width directions of the first radiator 11 and the second radiator 12 is the surface with the largest area of the first radiator 11 and the second radiator 12.
[0071] like Figure 6 As shown, the third radiating branch 121 extending a predetermined distance along the width direction away from the first long side on the second long side C2 may include: the third radiating branch 121 extending a third predetermined distance along the second direction towards the side where the third radiator 13 is located on the second long side C2 to form a third extension segment Y21, and then extending a fourth predetermined distance along the direction away from the first long side C1 to form a fourth extension segment Y22, thereby forming the extension Y2, that is, the extension Y2 includes the third extension segment Y21 and the fourth extension segment Y22.
[0072] Among them, such as Figure 6 As shown, extending a fourth preset distance along a direction away from the first long side C1 can specifically be forming the fourth extension segment Y22 by extending the fourth preset distance along a direction away from the first long side C1 and deviating from the direction away from the first long side C1 by a preset angle. The preset angle is an angle greater than 0 and less than or equal to 90 degrees. The length of the third extension segment Y21 may be the same as or different from the length of the first extension segment Y11, and the length of the fourth extension segment Y22 may be the same as or different from the length of the second extension segment Y12.
[0073] That is, the third radiating branch 121 extends a first preset distance inward toward the inside of the electronic device 100 along the second long side C2 in a direction parallel to the display screen of the electronic device 100, and then extends a second preset distance in a specific direction, wherein the specific direction is the direction in which the thickness direction of the electronic device 100 deviates from the inside of the electronic device 100 by a preset angle, and the preset angle is an angle greater than 0 and less than or equal to 90 degrees.
[0074] The fourth extension segment Y22 may be an arc-shaped segment, and the center of curvature is located on one side of the third radiator 13, that is, the fourth extension segment Y22 may be curved and extended into the interior of the electronic device 100.
[0075] In some embodiments, such as Figure 2 as well as Figure 4 As shown, the dimensions of the first radiating branch 111, the second radiating branch 112, and the third radiating branch 121 in the width direction are all greater than the dimension of the fourth radiating branch 122 in the width direction.
[0076] Where the dimensions of the first radiating branch 111, the second radiating branch 112, and the third radiating branch 121 in the width direction are all greater than the dimension of the fourth radiating branch 122 in the width direction, the dimensions of the first radiating branch 111, the second radiating branch 112, and the third radiating branch 121 in the width direction may be the same or different. For example, the length of the fourth extension segment Y22 can be set to be the same as or different from the length of the aforementioned second extension segment Y12, thereby making the dimension of the third radiating branch 121 in the width direction the same as or different from the dimensions of the first radiating branch 111 and the second radiating branch 112 in the width direction. Furthermore, the length of the second extension segment Y12 of the first radiating branch 111 can be set to be the same as or different from the length of the second extension segment Y12 of the second radiating branch 112, thereby making the dimensions of the first radiating branch 111 and the second radiating branch 112 in the width direction the same or different.
[0077] Among them, such as Figure 6 As shown, the short side 131 of the third radiator 13 is directly opposite the end 121a of the third radiating branch 121 extending from the second long side C2. The third radiator 13 is elongated, and the surface with the largest area of the third radiator 13, i.e., parallel to the screen surface of the display screen 4 of the electronic device 100, is coplanar with the end 121a of the third radiating branch 121.
[0078] As mentioned above, the short end 131 of the third radiator 13 is also directly opposite and coupled to the end of the third radiating branch 121 that is away from the second feed point K2. Therefore, in some embodiments, the end 121a directly opposite the short end 131 of the third radiator 13 can be the end 121a of the third radiating branch 121 that extends from the second long side C2 away from the second feed point K2.
[0079] like Figure 1 , Figure 3As shown, in some embodiments, the antenna assembly 1 further includes a first feed source 14 and a second feed source 15. The first feed source 14 is connected to the first feed point K1 and is used to provide a first feed signal so that the first radiating branch 111 and the second radiating branch 112 can transmit and receive electromagnetic wave signals in at least the mid-to-high frequency band. The second feed source 15 is connected to the second feed point K2 and is used to provide a second feed signal so that the third radiating branch 121 and the third radiator 13 can transmit and receive electromagnetic wave signals in at least the N78 frequency band. Figure 1 , Figure 3 As shown, the antenna assembly also includes a third feed source 16 and a third feed point K3. The third feed point K1 is located on the second radiator 12. The third feed source 16 is connected to the third feed point K3 to provide a third feed signal so that the third radiating branch 121 and the fourth radiating branch 122 can transmit and receive electromagnetic wave signals in at least the low-frequency band.
[0080] In some embodiments, such as Figure 1 , Figure 3 As shown, the second feed point K2 and the third feed point K3 are at the same point. That is, in some embodiments, the second feed point K2 and the third feed point K3 are the same feed point, and by connecting different feed sources, the third radiation branch 121 and the third radiator 13 can at least achieve the transmission and reception of electromagnetic wave signals in the N78 frequency band, and the third radiation branch 121 and the fourth radiation branch 122 can at least achieve the transmission and reception of electromagnetic wave signals in the low frequency band.
[0081] Since the low-frequency band and the N78 band do not overlap, even if the second feed point K2 and the third feed point K3 are at the same point, they will not interfere with each other.
[0082] like Figure 1 , Figure 3As shown, the antenna assembly 1 further includes a first matching circuit 17, a second matching circuit 18, and a matching circuit 19. The first matching circuit 17 is connected between the first feed point K1 and the first feed source 14, and is used to further match and adjust the operating frequency bands of the first radiating branch 111 and the second radiating branch 112 to achieve more accurate operation in the mid-to-high frequency band. The second matching circuit 18 is connected between the second feed point K2 and the second feed source 15, and is used to further match and adjust the operating frequency bands of the third radiating branch 121 and the third radiator 13 to achieve more accurate operation in the N78 frequency band. The matching circuit 19 is connected between the third feed point K3 and the third feed source 16, and is used to further match and adjust the operating frequency bands of the third radiating branch 121 and the fourth radiating branch 122 to achieve more accurate operation in the low frequency band.
[0083] Please see Figure 7 This is a schematic diagram of the matching circuit structure in one embodiment of this application. In some embodiments, Figure 7 The matching circuit M1 shown can be any one of the first matching circuit 17, the second matching circuit 18, and the matching circuit 19. For example... Figure 7 As shown, the matching circuit M1 includes multiple matching elements M11 and at least one matching switch SW1. At least one of the multiple matching elements M11 is connected in series with a matching switch SW1, which is used to switch between on and off states to adjust the operating frequency.
[0084] The plurality of matching elements M11 may include components such as inductors and capacitors, and are connected in parallel to the corresponding feed source and feed point. When a matching element M11 is connected in series with a matching switch SW1, the series branch of the matching element M11 and the matching switch SW1 is connected in parallel to other matching elements M11 or other series branches between the corresponding feed source and feed point. Therefore, by switching the on or off state of the matching switch SW1, the number and / or type of matching elements M11 participating in the matching adjustment in the matching circuit M1 can be changed, thereby adjusting the operating frequency of the radiator under the excitation of the corresponding feed source. The matching switch SW1 that switches the on or off state may be some or all of the at least one matching switch SW1.
[0085] Among them, such as Figure 7As shown, the number of the at least one matching switch SW1 is less than the number of the plurality of matching elements M11. Obviously, in other embodiments, the number of the at least one matching switch SW1 may also be equal to the number of the plurality of matching elements M11, that is, each matching element M11 is connected in series with a matching switch SW1. Wherein, when the number of the at least one matching switch SW1 is equal to the number of the plurality of matching elements M11, after switching the on or off state of the matching switch SW1, at least one matching switch SW1 is in the on state.
[0086] Among them, such as Figure 1 , Figure 3 As shown, the first radiator 11 further includes a first grounding point G1, located at the end of the first radiating branch 111 away from the first feed point K1. The second radiator 12 further includes a second grounding point G2, located at the end of the fourth radiator 122 away from the second feed point K2. The third radiator 13 further includes a third grounding point G3, located at the end 132 of the third radiator 13 away from the third radiating branch 121. The end 132 is the other short side end of the third radiating branch 121 mentioned above.
[0087] In some embodiments, the first power supply point K1 and the first grounding point G1 are located on the inner side of the first radiator 11 facing the electronic device 100, and the second power supply point K2, the third power supply point K3 and the second grounding point G2 are located on the inner side of the second radiator 12 facing the electronic device 100.
[0088] The first feed source 14, the second feed source 15, and the third feed source 16 are respectively connected to the first feed point K1, the second feed point K2, and the third feed point K3 via conductive wires, FPCs, metal springs, solder, and other connecting components. When the antenna assembly 1 also includes the aforementioned first matching circuit 17, second matching circuit 18, and matching circuit 19, the first matching circuit 17, second matching circuit 18, and matching circuit 19 are respectively connected to the first feed point K1, the second feed point K2, and the third feed point K3 via conductive wires, FPCs, metal springs, solder, and other connecting components. The first ground point G1, the second ground point G2, and the third ground point G3 can also be grounded by connecting to ground via conductive wires, FPCs, metal springs, solder, and other connecting components.
[0089] The first feed source 14, the second feed source 15, the third feed source 16, the first matching circuit 17, the second matching circuit 18, and the matching circuit 19 are disposed on the circuit board 3.
[0090] In this application, the ground can specifically be a metal structure ground or a motherboard ground. That is, the ground can be a metal ground structure formed by processing a metal structure, or it can be the overall ground on the motherboard of the electronic device 100, for example, a ground area or ground layer on the motherboard. The motherboard is the aforementioned circuit board 3. The metal ground structure can be located in a position that can be held by the user, and when the user holds it, it is connected to the earth to achieve the final grounding of the entire device. The motherboard ground is also ultimately connected to the metal structure ground to achieve the final grounding.
[0091] The antenna assembly 100 of this application, through the above-described structure, can achieve full coverage of low frequency, mid-high frequency and N78 frequency band, effectively meet the communication performance requirements in landscape gaming scenarios, avoid the impact on mid-high frequency, and effectively reduce the size of the radiator, thus achieving good antenna performance within the limited space of the current electronic device 100.
[0092] Please see Figure 8 The above is a simulation of the S-parameters and overall efficiency curves of a reference antenna assembly in the low-frequency, mid-high-frequency, and N78 frequency bands. The reference antenna assembly is an antenna assembly without the structural modifications described in this application for the antenna assembly 100. For example, the dimensions of the first, second, and third radiating branches of the reference antenna assembly in the width direction are all equal to the dimension of the fourth radiating branch in the width direction, and equal to the dimension of the frame 2 of the electronic device 100 in the thickness direction. Furthermore, the metal portion coupled to the third radiating branch is at least partially located at the positions corresponding to the first and second radiating branches.
[0093] in, Figure 8 The diagram illustrates the input return loss S11-1 in the low-frequency band, the input return loss S11-2 in the mid-high frequency band, the input return loss S11-3 in the N78 band, the overall system efficiency St1-1 in the low-frequency band, the overall system efficiency St1-2 in the mid-high frequency band, and the overall system efficiency St1-3 in the N78 band for the reference antenna assembly.
[0094] from Figure 8 It can be seen that the input return loss S11-1 of the reference antenna assembly is approximately -6 dB in the low-frequency band, approximately -4 dB in the mid-to-high-frequency band, and approximately -10 dB in the N78 band. The overall system efficiency St1-1 in the low-frequency band is approximately -7.5 dB, the overall system efficiency St1-2 in the mid-to-high-frequency band is approximately -8 dB, and the overall system efficiency St1-3 in the N78 band is approximately -4.2 dB.
[0095] Please see Figure 9The figures show the S-parameters and overall efficiency curves of the antenna assembly 100 in this application, obtained through simulation, in the low-frequency, mid-high-frequency, and N78 frequency bands. Figure 9 The S-parameters and overall efficiency curves shown are based on... Figures 1-4 The antenna assembly 1 shown is derived from simulation, that is, the antenna assembly 100 with the structure having a first radiating branch 111, a second radiating branch 112, and a third radiating branch 121 whose dimensions in the width direction are all larger than the dimensions of the fourth radiating branch 122 in the width direction is derived from simulation.
[0096] Figure 9 The diagram illustrates the input return loss S22-1 in the low-frequency band, the input return loss S22-2 in the mid-high frequency band, the input return loss S22-3 in the N78 band, the overall system efficiency St2-1 in the low-frequency band, the overall system efficiency St2-2 in the mid-high frequency band, and the overall system efficiency St2-3 in the N78 band for antenna component 1.
[0097] from Figure 9 It can be seen that the input return loss S22-1 of the antenna assembly 1 in the low-frequency band is approximately -7 dB, the input return loss S22-2 in the mid-high frequency band is approximately -8 dB, the input return loss S11-3 in the N78 band is approximately -11.9 dB, and the input return loss at 3.5 GHz is only approximately -8.7 dB. The overall system efficiency St2-1 in the low-frequency band is approximately -7 dB, the overall system efficiency St2-2 in the mid-high frequency band is approximately -2.5 dB, the overall system efficiency St2-3 in the N78 band, and particularly the overall system efficiency at 3.5 GHz is approximately -4.2 dB.
[0098] Therefore, compared to the reference antenna assembly, the antenna assembly 1 of this application shows a significant reduction in input return loss in the low-frequency band, mid-high-frequency band, and N78 band, while the overall system efficiency is improved or remains approximately unchanged. This effectively reduces input return loss and improves overall system efficiency. In particular, the reduction in input return loss in the mid-high-frequency band is very significant, and the improvement in overall system efficiency in the mid-high-frequency band is also very significant. Therefore, the antenna assembly 1 of this application is highly beneficial for improving performance in the mid-high-frequency band.
[0099] The input return loss in the low-frequency band, mid-to-high-frequency band, and N78 band mentioned above all refer to the minimum input return loss in the corresponding frequency band, and the frequency corresponding to this minimum value is the resonant frequency. The total system efficiency in the low-frequency band, mid-to-high-frequency band, and N78 band mentioned above all refer to the maximum total system efficiency in the corresponding frequency band.
[0100] Please see Figure 10 This is a schematic diagram of the S-parameter curves of the antenna assembly 11 of this application. Wherein, Figure 10 The S-parameter curves obtained from the simulation of the antenna component 11 of this application are shown separately in the figure.
[0101] in, Figure 10 Five input return loss points P1-P5 are illustrated. The frequencies corresponding to these five input return loss points P1-P5 are the resonant modes of the operating modes in which the antenna 11 can operate. Figure 10 As shown, input return loss point P1, which is also one of the minimum input return losses in the mid-to-high frequency band, corresponds to a resonant frequency of 1.8 GHz (GHz), which is the resonant frequency realized by the IFA (inverted F antenna) mode formed by the first radiation branch 111 and the second radiation branch 112. Input return loss point P2, also one of the minimum input return losses in the mid-to-high frequency band, corresponds to a resonant frequency of 2.6 GHz, which is the resonant frequency realized by the monopole mode formed by the second radiation branch 112. Input return loss point P3, one of the minimum input return losses in the N78 band, corresponds to a resonant frequency of 3.5 GHz, which is the resonant frequency realized by the monopole mode formed by the third radiation branch 121 decoupling and exciting the third radiator 13. The input return loss point P4 represents the minimum input return loss in the low-frequency band, corresponding to a resonant frequency of 0.73 GHz. This resonant frequency is achieved by the small loop or left-handed mode formed by the third radiation branch 121 and the fourth radiation branch 122. The input return loss point P5 also represents one of the minimum input return losses in the mid-to-high frequency band, corresponding to a resonant frequency of 2.2 GHz. This resonant frequency is achieved by the 1 / 2 wavelength loop mode formed by the second feed point K2 through the fourth radiation branch 122 to the second ground point G2.
[0102] As can be seen from the above, the antenna assembly 11 of this application can achieve full-band coverage from low frequency to high frequency. It can also be seen from the above that, in fact, the fourth radiating branch 122 can also be used to support the transmission and reception of electromagnetic wave signals in the mid-to-high frequency band.
[0103] In this application, the resonant frequency of the low-frequency band includes 0.73 GHz, the resonant frequencies of the mid-to-high frequency band include the aforementioned 1.8 GHz, 2.2 GHz, and 2.6 GHz, and the resonant frequency of the N78 band includes 3.5 GHz.
[0104] Please see Figure 11The diagram shows the current distribution of the antenna assembly 100 in one embodiment of this application when it operates at 1.8 GHz. As mentioned earlier, 1.8 GHz is the resonant frequency corresponding to the IFA mode formed by the first radiating branch 111 and the second radiating branch 112. Figure 11 As shown, when the antenna assembly 100 operates at 1.8 GHz, the current flows from the first ground point G1 through the first radiating branch 111 to the second radiating branch 112, and reaches the end of the second radiating branch 112 furthest from the first feed point K1. Wherein, as... Figure 11 In the IFA mode formed by the first radiation branch 111 and the second radiation branch 112, a current will also be coupled and excited from the second feed point K2 through the third radiation branch 121 and to the end of the third radiation branch 121 away from the second feed point K2.
[0105] Please see Figure 12 This is a current distribution diagram of the antenna assembly 100 in one embodiment of this application when it operates at 2.6 GHz. As mentioned above, this is the resonant frequency corresponding to the monopole mode formed by the second radiating branch 112. Figure 12 As shown, when the antenna assembly 100 operates at 2.6 GHz, the current flows from the first feed point K1 through the second radiating branch 112 until it reaches the end of the second radiating branch 112 that is away from the first feed point K1. Wherein, as... Figure 12 In the monopole mode formed by the second radiation branch 112, a current will also be coupled and excited from the second feed point K2 through the third radiation branch 121 and to the end of the third radiation branch 121 away from the second feed point K2.
[0106] Please see Figure 13 This is a current distribution diagram of the antenna assembly 100 in one embodiment of this application when it operates at 3.5 GHz. As mentioned above, this is the resonant frequency achieved by decoupling the monopole mode formed by the third radiating branch 121 to excite the third radiator 13. Figure 13 As shown, the current of the antenna assembly 100 when operating at 3.5 GHz includes the current flowing from the second feed point K2 through the third radiating branch 121 and reaching the end of the third radiating branch 121 away from the second feed point K2, and also includes the current flowing from the third ground point G3 through the third radiator 13 and reaching the short side end 131 of the third radiator 13 adjacent to the third radiating branch 121.
[0107] Please see Figure 14This is a current distribution diagram of the antenna assembly 100 in one embodiment of this application when it operates at 0.73 GHz. As mentioned above, this is the resonant frequency corresponding to the small loop or left-handed mode formed by the third radiating branch 121 and the fourth radiating branch 122. Figure 14 As shown, when the antenna assembly 100 operates at 0.73 GHz, the current flows from the second ground point G2 through the fourth radiating branch 122 to the third radiating branch 121, and reaches the end of the third radiating branch 121 that is far from the second feed point K2.
[0108] Please see Figure 15 This is a current distribution diagram of the antenna assembly 100 in one embodiment of this application when it operates at 2.2 GHz. As mentioned above, this is the resonant frequency corresponding to the 1 / 2 wavelength loop mode formed by the second feed point K2 through the fourth radiating branch 122 to the second ground point G2. Figure 15 As shown, the current of the antenna assembly 100 when operating at 2.2 GHz includes two bidirectional currents: the current along the path from the second ground point G2 to the second feed point K2 and the current along the path from the second feed point K2 to the second ground point G2.
[0109] It should be noted that, Figures 11-15 The schematic diagram of the antenna assembly 100 is a top view taken from one side of the display screen 4 of the electronic device 100. In reality, when the current passes through the first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122, it is a surface current that flows through the entire surface with the largest area of the first radiating branch 111, the second radiating branch 112, the third radiating branch 121, and the fourth radiating branch 122. When the first radiating branch 111, the second radiating branch 112, and the third radiating branch 121 also include an extension, the current also flows through the entire surface of the extension.
[0110] The electronic device 100 described in this application can be any electronic device with an antenna, such as a mobile phone or a tablet computer.
[0111] The antenna assembly 100 and electronic device of this application, through the above structure, can achieve full coverage of low frequency, mid-high frequency and N78 frequency band, effectively meet the communication performance requirements in landscape gaming scenarios, avoid the impact on mid-high frequency, and effectively reduce the size of the radiator, thus achieving good antenna performance within the small space of the current electronic device 100.
[0112] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An antenna assembly, characterized in that, include: A first radiator, the first radiator including a first feed point, the first radiator being divided into a first radiation branch and a second radiation branch through the first feed point, wherein the first radiation branch and the second radiation branch are used to support the transmission and reception of electromagnetic wave signals in at least the medium and high frequency bands. The second radiator is spaced apart from the first radiator. The second radiator includes a second feed point. The second radiator is divided into a third radiating branch and a fourth radiating branch through the second feed point. The third radiating branch is adjacent to and spaced apart from the second radiating branch of the first radiator. The third radiating branch and the fourth radiating branch are used to support the transmission and reception of electromagnetic wave signals in at least the low-frequency band. A third radiator is disposed adjacent to and spaced apart from the third radiating branch, and the third radiator is coupled to the third radiating branch to support the transmission and reception of electromagnetic wave signals in at least the N78 frequency band; The first radiator and the second radiator are arranged along a first direction, and the third radiator and the third radiating branch are arranged along a second direction, wherein the first direction is perpendicular to the second direction.
2. The antenna assembly according to claim 1, characterized in that, The first radiator, the second radiator, and the third radiator are elongated. The length directions of the first radiator and the second radiator are parallel to the first direction, and the length direction of the third radiator is parallel to the second direction.
3. The antenna assembly according to claim 2, characterized in that, The first, second, third, and fourth radiating branches are all elongated. The length directions of the first and second radiating branches are the same as the length directions of the first radiator, and the length directions of the third and fourth radiating branches are the same as the length directions of the second radiator. At least one of the first and second radiating branches has a larger width dimension than the fourth radiating branch in the width direction. The width direction is perpendicular to both the first and second directions.
4. The antenna assembly according to claim 3, characterized in that, The first radiator and the second radiator are coplanar. The first long side of the first radiating branch, the second radiating branch, the third radiating branch and the fourth radiating branch are flush. At least one of the first radiating branch and the second radiating branch extends a predetermined distance away from the first long side along the width direction on the second long side. The second long side and the first long side are opposite sides.
5. The antenna assembly according to claim 4, characterized in that, At least one of the first radiating branch and the second radiating branch extends a first preset distance along the second direction toward the side where the third radiator is located on the second long side to form a first extension segment, and then extends a second preset distance away from the first long side to form a second extension segment.
6. The antenna assembly according to claim 3, characterized in that, The dimension of the third radiating branch in the width direction is greater than that of the fourth radiating branch in the width direction.
7. The antenna assembly according to claim 6, characterized in that, The first radiator and the second radiator are coplanar. The first long side of the first radiating branch, the second radiating branch, the third radiating branch and the fourth radiating branch are flush. The third radiating branch extends a predetermined distance away from the first long side along the width direction on the second long side. The second long side and the first long side are opposite sides.
8. The antenna assembly according to claim 7, characterized in that, The third radiating branch extends a third preset distance along the second direction toward the side where the third radiator is located on the second long side to form a third extension segment, and then extends a fourth preset distance away from the first long side to form a fourth extension segment.
9. The antenna assembly according to any one of claims 1-8, characterized in that, The antenna assembly further includes a first feed source and a second feed source. The first feed source is connected to the first feed point and is used to provide a first feed signal so that the first radiating branch and the second radiating branch can transmit and receive electromagnetic wave signals in at least the mid-to-high frequency band. The second feed source is connected to the second feed point and is used to provide a second feed signal so that the third radiating branch and the third radiator can transmit and receive electromagnetic wave signals in at least the N78 frequency band. The antenna assembly further includes a third feed source and a third feed point. The third feed point is located on the second radiator. The third feed source is connected to the third feed point and is used to provide a third feed signal so that the third radiating branch and the fourth radiating branch can transmit and receive electromagnetic wave signals in at least the low frequency band.
10. The antenna assembly according to claim 9, characterized in that, The second feed point and the third feed point are at the same point.
11. The antenna assembly according to any one of claims 1-8, characterized in that, The first radiator further includes a first grounding point located at the end of the first radiating branch away from the first feed point. The second radiator further includes a second grounding point located at the end of the fourth radiating branch away from the second feed point. The third radiator further includes a third grounding point located at the end of the third radiator away from the third radiating branch.
12. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-11.
13. The electronic device according to claim 12, characterized in that, The electronic device has a metal frame, and the first radiator and the second radiator are two metal frame segments formed by opening gaps in the metal frame of the electronic device. The third radiator is a metal body disposed inside the electronic device.
14. The electronic device according to claim 12, characterized in that, The frame of the electronic device is a non-metallic frame, the first radiator and the second radiator are metal segments disposed in the frame of the electronic device, and the third radiator is a metal body disposed inside the electronic device.