Antenna assembly and electronic device

Abstract

The application relates to the communication technical field and discloses an antenna assembly and electronic equipment. The antenna assembly comprises a grounding plate, a first radiator, a second radiator and a decoupling component. The first radiator is connected with the grounding plate through a first feeding port; the second radiator is connected with the grounding plate through a second feeding port; the decoupling component is arranged between the first radiator and the second radiator in a first direction; the decoupling component comprises a horizontal arm branch, a vertical arm branch and a first panel; the horizontal arm branch extends along the first direction; the vertical arm branch directly extends along a second direction and is connected with the horizontal arm branch and the first panel; the first direction and the second direction are perpendicular; and the first panel is arranged in a spaced mode with the grounding plate to form a decoupling capacitor. The antenna assembly can further improve the decoupling effect of the antenna assembly and the stability of signal receiving and transmitting by constructing the decoupling capacitor through the first panel and the grounding plate.

Description

Technical Field

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

[0002] With the rapid development of wireless communication technologies such as 5G and Wi-Fi 6 / 6E, mobile terminals need to support more and more frequency bands and MIMO (Multiple-Input Multiple-Output) technology, which means that more antennas need to be integrated within a limited device space. However, the reduction in the distance between two or more antenna elements will lead to strong mutual coupling effects, which will seriously degrade the radiation performance of the antenna elements.

[0003] Traditional antenna decoupling methods involve setting up a T-shaped decoupling structure between two or more antenna elements to absorb the coupled energy and reduce mutual interference between the antenna elements. However, although the simple T-shaped decoupling structure can reduce the mutual coupling effect between two antenna elements to a certain extent, its decoupling bandwidth is limited, and the stability of signal transmission and reception still needs to be improved. Utility Model Content

[0004] This application provides an antenna assembly and an electronic device. By adding a first panel between the T-shaped decoupling structure and the ground plane of the antenna assembly, and constructing a decoupling capacitor by spacing the first panel and the ground plane, the decoupling effect of the antenna assembly can be further improved, and the stability of its signal transmission and reception can be enhanced. In addition, compared with the method of using physical capacitor components, the method of constructing the decoupling capacitor by cleverly designing the first panel and the ground plane is easy to process and manufacture, and reduces the number of physical parts, thereby reducing production costs.

[0005] In a first aspect, embodiments of this application provide an antenna assembly, including a ground plane, a first radiator, a second radiator, and a decoupling component. The first radiator is connected to the ground plane via a first feed port; the second radiator is connected to the ground plane via a second feed port; the decoupling component is disposed between the first and second radiators in a first direction; the decoupling component includes a horizontal arm stub, a vertical arm stub, and a first panel, the horizontal arm stub extending along the first direction, the vertical arm extending directly along the second direction and connecting the horizontal arm stub and the first panel, the first and second directions being perpendicular, and the first panel being spaced apart from the ground plane to form a decoupling capacitor.

[0006] In some embodiments, the first radiator and the second radiator are symmetrically arranged with respect to the decoupling component; in the second direction, a portion of the crossarm branch is spaced apart from the first radiator by a first gap, and a portion of the crossarm branch is spaced apart from the second radiator by a second gap.

[0007] In some embodiments, the transverse arm branch includes a first end; along the first direction, the transverse arm branch partially overlaps with the first radiator, and the overlap distance L1 between the end of the first radiator near the second radiator and the first end satisfies: L1≥1mm.

[0008] In some embodiments, the transverse arm branch includes a second end, the first end and the second end are disposed opposite to each other in the first direction; along the first direction, the transverse arm branch partially overlaps with the second radiator, and the overlap distance L2 between the end of the second radiator near the first radiator and the second end satisfies: L2≥1mm.

[0009] In some embodiments, the first radiator includes a first branch and a second branch connected together, the first branch and the second branch being L-shaped, the first branch overlapping the cross arm branch in a first direction, and the second branch being connected to the ground plane through the first power supply port.

[0010] In some embodiments, the second radiator includes a third branch and a fourth branch connected together, the third branch and the fourth branch being L-shaped, the third branch overlapping the cross arm branch in a first direction, and the fourth branch being connected to the ground plane through the second power supply port.

[0011] In some embodiments, in a first operating frequency band, the energy of the first radiator is coupled to the crossarm stub to achieve radiation, and / or, the energy of the second radiator is coupled to the crossarm stub to achieve radiation; in a second operating frequency band, the first radiator and the crossarm stub respectively excite second-mode resonances, achieving broadband radiation through coupling of multiple resonant points, and / or, the second radiator and the crossarm stub respectively excite second-mode resonances, achieving broadband radiation through coupling of multiple resonant points.

[0012] In some embodiments, the antenna assembly further includes a dielectric substrate, wherein the ground plane, the first radiator, the second radiator and the decoupling component are disposed on the same side surface of the dielectric substrate, and the distance D1 between the first panel and the ground plane satisfies: 0.3mm≤D1≤2mm.

[0013] In some embodiments, the antenna assembly further includes a dielectric substrate having a first surface and a second surface in its thickness direction, the ground plane, the first radiator and the second radiator being disposed on the first surface, and the decoupling component being disposed on the second surface; when projected along the thickness direction of the dielectric substrate, at least a portion of the first panel overlaps with the ground plane.

[0014] Secondly, embodiments of this application provide an electronic device including an antenna assembly. A decoupling component is disposed between a first radiator and a second radiator. The decoupling component reduces interference between the first and second radiators, thereby improving the quality of signals transmitted by the first and second radiators. This, in turn, improves the stability of signal transmission and reception in the electronic device, enhances the accuracy of signal processing, and improves the overall performance of the electronic device.

[0015] The beneficial effects of the embodiments of this application are as follows: By adding a first panel between the T-shaped decoupling structure of the antenna assembly and the ground plane, and constructing a decoupling capacitor by spacing the first panel and the ground plane, the decoupling effect of the antenna assembly can be further improved, and the stability of its signal transmission and reception can be enhanced. In addition, compared with the method of using physical capacitor components, the method of constructing a decoupling capacitor by cleverly designing the first panel and the ground plane is easy to process and manufacture, and reduces the number of physical parts, thereby reducing production costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the antenna assembly according to an embodiment of this application; Figure 2 This is a schematic diagram of an antenna assembly according to another embodiment of this application; Figure 3 Simulation diagrams of the common-differential mode S-parameters of existing dual-antenna and dual-antenna of this application are shown; Figure 4 The passive S-parameter simulation diagrams of the existing dual antenna and the dual antenna of this application are shown.

[0018] The reference numerals in the detailed embodiments are as follows: 100. Antenna assembly; X, first direction; Y, second direction; 10. Flooring connection; 20. First radiator; 21. First feed port; 22. First gap; 23. First branch; 24. Second branch; 30. Second radiator; 31. Second feed port; 32. Second gap; 33. Third branch; 34. Fourth branch; 40. Decoupling component; 41. Cross arm branch; 411. First end; 412. Second end; 42. Longitudinal arm branch; 43. First panel; 44. Decoupling capacitor; 50. Medium plate; 51. First surface; 52. Second surface. Detailed Implementation

[0019] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0022] With the trend towards multifunctionality and miniaturization of electronic devices, more antenna elements operating at different frequencies are incorporated within these devices, and the spacing between two antenna elements is minimized as much as possible. However, reducing the distance between two or more antenna elements can lead to strong mutual coupling effects, severely degrading the radiation performance of the antenna elements.

[0023] Traditional antenna decoupling methods involve setting up a T-shaped decoupling structure between two or more antenna elements to absorb the coupled energy and reduce mutual interference between the antenna elements. However, although the simple T-shaped decoupling structure can reduce the mutual coupling effect between two antenna elements to a certain extent, its decoupling bandwidth is limited, and the stability of signal transmission and reception still needs to be improved.

[0024] Based on the above problems, this application further optimizes the structure of the antenna assembly 100. By setting a decoupling capacitor between the T-shaped decoupling structure and the ground plane, the decoupling effect of the antenna assembly 100 can be further improved, thereby enhancing its signal transmission and reception stability.

[0025] In some embodiments, please refer to Figure 1 This application provides an antenna assembly 100, including a ground plane 10, a first radiator 20, a second radiator 30, and a decoupling component 40. The ground plane 10 is grounded, the first radiator 20 is connected to the ground plane 10 through a first feed port 21, and the second radiator 30 is connected to the ground plane 10 through a second feed port 31. The decoupling component 40 is disposed between the first radiator 20 and the second radiator 30 in a first direction X. The decoupling component 40 includes a horizontal arm stub 41, a vertical arm stub 42, and a first panel 43. The horizontal arm stub 41 extends along the first direction X, and the vertical arm extends directly along the second direction Y and connects the horizontal arm stub 41 and the first panel 43. The first direction X and the second direction Y are perpendicular. The first panel 43 is spaced apart from the ground plane 10 to form a decoupling capacitor 44.

[0026] When the first radiator 20 resonates with a signal of a specific frequency, it generates energy and radiates it to the outside. At this time, the decoupling capacitor 44 can absorb part of the energy radiated by the first radiator 20, thereby preventing the energy radiated by the first radiator 20 from interfering with the resonance between the second radiator 30 and the signal, thus improving the operating stability of the second radiator 30. Similarly, when the second radiator 30 resonates with a signal of a specific frequency, it generates energy and radiates it to the outside. At this time, the decoupling capacitor 44 can absorb part of the energy radiated by the second radiator 30, thereby preventing the energy radiated by the second radiator 30 from interfering with the resonance between the first radiator 20 and the signal, thus improving the operating stability of the first radiator 20.

[0027] In this application, a decoupling component 40 is added between the closely spaced first radiator 20 and second radiator 30. The decoupling component 40 includes a decoupling capacitor 44 between the longitudinal arm stub 41 and the ground plane 10. The decoupling capacitor 44 reduces the negative coupling effect between the first radiator 20 and the second radiator 30, improves the isolation effect of the feed network, and ensures the radiation capability of both radiators 20 and 30. With the action of the decoupling capacitor 44, the distance between the first radiator 20 and the second radiator 30 can be further reduced, meeting the miniaturization design requirements of the antenna assembly 100.

[0028] Furthermore, compared to using physical capacitor components, this application constructs a decoupling capacitor 44 by cleverly designing the first panel 43 and the ground plane 10. Specifically, the decoupling capacitor 44 is formed by spacing the first panel 43 and the ground plane 10. This makes it easier to process and manufacture, reduces the number of physical parts, and lowers production costs.

[0029] It should be noted that the first panel 43 and the ground plane 10 are spaced apart to form a decoupling capacitor 44, which can be understood as: (1) the first panel 43 and the ground plane 10 are located in the same plane, and the first panel 43 and the ground plane 10 are spaced apart without contact to form a decoupling capacitor 44; (2) the first panel 43 and the ground plane 10 are located in two different planes, and the first panel 43 and the ground plane 10 form a decoupling capacitor 44 through the space between their surfaces. In a preferred embodiment, these two different planes are parallel to each other.

[0030] In some embodiments, the first radiator 20 and the second radiator 30 are symmetrically arranged with respect to the decoupling component 40. This symmetrical arrangement facilitates manufacturing and allows for adjustment of the coupling effect between the first radiator 20, the second radiator 30, and the decoupling component 40.

[0031] In some embodiments, please refer to Figure 1 In the second direction Y, a portion of the transverse arm stub 41 is spaced apart from the first radiator 20 by a first gap 22, and a portion of the transverse arm stub 41 is spaced apart from the second radiator 30 by a second gap 32. This arrangement, on the one hand, further reduces the distance between the first radiator 20 and the second radiator 30 in the first direction X, thereby reducing the overall area occupied by the antenna assembly 100; on the other hand, the transverse arm stub 41 overlaps with the first radiator 20 and the second radiator 30 in the second direction Y, forming a coupling capacitance effect in this overlapping area. As an example, the area occupied by the antenna assembly 100 is only 8*30mm. 2 This makes the antenna assembly 100 more compact and easier to integrate and install inside electronic devices.

[0032] In some embodiments, please refer to Figure 1 The horizontal arm stalk 41 extends along the first direction X and includes a first end 411 and a second end 412 disposed opposite to each other in the first direction X. The vertical arm stalk 42 is connected at the midpoint of the horizontal arm stalk 41. The horizontal arm stalk 41 and the vertical arm stalk 42 form a T-shaped structure, which improves the symmetry of the antenna assembly 100 and ensures the stability of the transmitted and received signals of the first radiator 20 and the second radiator 30.

[0033] Along the first direction X, the transverse arm branch 41 partially overlaps with the first radiator 20, and the overlap distance L1 between the end of the first radiator 20 near the second radiator 30 and the first end 411 satisfies: L1≥1mm. Along the first direction X, the transverse arm branch 41 partially overlaps with the second radiator 30, and the overlap distance L2 between the end of the second radiator 30 near the first radiator 20 and the second end 412 satisfies: L2≥1mm.

[0034] By controlling the overlap distance L1 between the crossarm branch 41 and the first radiator 20, and the overlap distance L2 between the crossarm branch 41 and the second radiator 30 within the above range, it can be ensured that the coupling between the crossarm branch 41 and the first radiator 20 and the second radiator 30 is large, which can effectively achieve decoupling and improve the radiation capability of the first radiator 20 and the second radiator 30.

[0035] In a further embodiment, the overlap distance L1 satisfies: L1≥3mm; the overlap distance L2 satisfies: L2≥3mm.

[0036] In some embodiments, please refer to Figure 1 The first radiator 20 includes a first branch 23 and a second branch 24 connected to each other. The first branch 23 extends along the first direction X and is close to the longitudinal arm branch 42. The second branch 24 extends along the second direction Y. The first branch 23 and the second branch 24 are L-shaped. The first branch 23 and the transverse arm branch 41 are overlapped in the first direction X. The second branch 24 is connected to the ground plane 10 through the first power supply port 21.

[0037] By arranging the first radiator 20 into an L-shaped structure, on the one hand, while keeping the total length of the current path constant, the size of the first radiator 20 in the second direction Y can be reduced, thereby reducing the overall size of the antenna assembly 100 and meeting the requirements of miniaturization design; on the other hand, the parallel extension of the first stub 23 and the crossarm stub 41 helps to increase the coupling between the first radiator 20 and the crossarm stub 41, forming a highly efficient first coupling region. This feeding method, which uses coupling rather than direct connection, can significantly increase the antenna bandwidth and reduce its Q value (quality factor), making the antenna performance less sensitive to manufacturing tolerances.

[0038] In some embodiments, please refer to Figure 1 The second radiator 30 includes a third branch 33 and a fourth branch 34 connected to each other. The third branch 33 extends along the first direction X and is close to the longitudinal arm branch 42. The fourth branch 34 extends along the second direction Y. The third branch 33 and the fourth branch 34 are L-shaped. The third branch 33 overlaps with the transverse arm branch 41 in the first direction X. The fourth branch 34 is connected to the ground plane 10 through the second power supply port 31.

[0039] By arranging the second radiator 30 into an L-shaped structure, on the one hand, while keeping the total length of the current path constant, the size of the second radiator 30 in the second direction Y can be reduced, thereby reducing the overall size of the antenna assembly 100 and meeting the requirements of miniaturization design; on the other hand, the parallel extension of the third stub 33 and the crossarm stub 41 helps to increase the coupling between the second radiator 30 and the crossarm stub 41, forming a highly efficient second coupling region. This feeding method, which uses coupling rather than direct connection, can significantly increase the antenna bandwidth and reduce its Q value (quality factor), making the antenna performance less sensitive to manufacturing tolerances.

[0040] It is understood that, in addition to being configured as an L-shaped structure, the first radiator 20 and the second radiator 30 in the antenna assembly 100 of this application embodiment can also be S-shaped, G-shaped, T-shaped, etc.

[0041] In some embodiments, during the first operating frequency band, the energy of the first radiator 20 is coupled to the crossarm stub 41 for radiation, and / or, the energy of the second radiator 30 is coupled to the crossarm stub 41 for radiation. As an example, the first operating frequency band is 2.4 GHz. In the 2.4 GHz low-frequency band, energy enters the L-shaped first radiator 20 from the first feed port 21, and then effectively excites the crossarm stub 41 in the decoupling component 40 through the first coupling region, making the crossarm stub 41 the dominant radiator. Similarly, in the 2.4 GHz low-frequency band, energy enters the L-shaped second radiator 30 from the second feed port 31, and then effectively excites the crossarm stub 41 in the decoupling component 40 through the second coupling region, making the crossarm stub 41 the dominant radiator.

[0042] In some embodiments, during the second operating frequency band, the first radiator 20 and the crossarm stub 41 respectively excite secondary mode resonances, achieving broadband radiation through the coupling of multiple resonant points, and / or, the second radiator 30 and the crossarm stub 41 respectively excite secondary mode resonances, achieving broadband radiation through the coupling of multiple resonant points.

[0043] As an example, the second operating frequency band is 5GHz-6GHz. In this high-frequency band, the L-shaped first radiator 20 and / or the second radiator 30 and the transverse arm stub 41 each excite their own secondary modes, and these two modes work together through electromagnetic coupling, ultimately merging into a continuous broadband.

[0044] According to the formula for calculating capacitance, C = ε0 * ε r *(A / d), where: C is capacitance, and the unit is farad (F).

[0045] ε0 is the vacuum permittivity, a fixed value of approximately 8.854 × 10⁻⁶. -12 F / m;εr It is the relative permittivity, a property of the medium filling the space between the two plates (ε0 of air). r ≈1.0, ε of FR4-PCB board r ≈4.3); A is the effective area of ​​the two parallel plates facing each other, in square meters (m²). 2 ); d is the distance between the two plates, in meters (m).

[0046] The vacuum permittivity ε0 is a known fixed value, and once the dielectric substrate is selected, the relative permittivity ε r Therefore, it can be determined that, according to the capacitance calculation formula, the capacitance can be changed by adjusting the effective area of ​​the two parallel plates facing each other and the distance between the two plates.

[0047] In some embodiments, please refer to Figure 1 The antenna assembly 100 of this application further includes a dielectric substrate 50, a ground plane 10, a first radiator 20, a second radiator 30, and a decoupling component 40 disposed on the same side surface of the dielectric substrate 50. The distance D1 between the first panel 43 and the ground plane 10 satisfies: 0.3mm ≤ D1 ≤ 2mm. By providing the above structure on the same side surface of the dielectric substrate 50, manufacturing is facilitated, especially in manufacturing and controlling the distance between the first panel 43 and the ground plane 10 in the same plane. In this embodiment, the value of the decoupling capacitor 44 is adjusted by adjusting the distance between the first panel 43 and the ground plane 10, so that it can meet the decoupling requirements between the first radiator 20, the second radiator 30, and the decoupling component 40.

[0048] As an example, based on simulation experiments, the method for determining the capacitance value of decoupling capacitor 44 is as follows: First, common-mode feeding is applied to the first radiator 20 and the second radiator 30, that is, the phase of the excitation signal applied to the first radiator 20 is the same as the phase of the excitation signal applied to the second radiator 30, so that the position of decoupling capacitor 44 is exactly at the point where the common-mode feeding current is large; then, differential-mode feeding is applied to the first radiator 20 and the second radiator 30, that is, the phase of the excitation signal applied to the first radiator 20 is opposite to the phase of the excitation signal applied to the second radiator 30, so that the position of decoupling capacitor 44 is exactly at the point where differential-mode feeding is applied. The current is reduced; finally, the capacitance value of the coupling capacitor is adjusted by increasing or decreasing the distance between the first panel 43 and the ground plane 10, so that the common-mode feed current and the differential-mode feed current are added on the first radiator 20 and canceled on the second radiator 30, thereby reducing the risk of the current generated by the resonance between the first radiator 20 and the signal entering the second radiator 30, thereby reducing the interference of the first radiator 20 to the second radiator 30. Similarly, the common-mode feed current and the differential-mode feed current are added on the second radiator 30 and canceled on the first radiator 20, which can reduce the interference of the second radiator 30 to the first radiator 20.

[0049] Since the first radiator 20 and the second radiator 30 have at least a first operating frequency band and a second operating frequency band, the above steps are repeated to obtain the value range of the decoupling capacitor 44 in the first operating frequency band and the value range of the decoupling capacitor 44 in the second operating frequency band, respectively. The common capacitance value in multiple value ranges is selected so that the decoupling capacitor 44 can decouple the antenna assembly 100 in multiple frequency bands. This reduces the risk that the decoupling capacitor 44 will fail due to changes in the signal frequency transmitted by the first radiator 20 and the second radiator 30, thereby improving the stability of the decoupling capacitor 44 and thus improving the stability of the decoupling device and the antenna assembly 100.

[0050] In other embodiments, please refer to Figure 2The antenna assembly 100 of this application also includes a dielectric substrate 50, which has a first surface 51 and a second surface 52 in its thickness direction. A ground plane 10, a first radiator 20, and a second radiator 30 are disposed on the first surface 51, and a decoupling component 40 is disposed on the second surface 52. Projecting along the thickness direction of the dielectric substrate 50, at least a portion of the first panel 43 overlaps with the ground plane 10, and this overlapping area constitutes a decoupling capacitor 44. By providing the above structure on two different surfaces of the dielectric substrate 50, with the first panel 43 overlapping the ground plane 10, the size of the antenna assembly 100 can be further reduced in the second direction Y. The overlapping arrangement of the first panel 43 and the ground plane 10 constitutes the effective area in the above capacitance calculation formula. Combined with simulation experimental parameters, by increasing or decreasing the overlap area between the first panel 43 and the ground plane 10 in different planes, the value of the decoupling capacitor 44 can be adjusted to meet the decoupling requirements between the first radiator 20, the second radiator 30, and the decoupling component 40.

[0051] In this embodiment, the method for determining the capacitance value of the decoupling capacitor 44 is similar to that in the above embodiments. The difference is that in the above embodiments, the capacitance value of the decoupling capacitor 44 is changed by adjusting the distance between the first panel 43 and the ground plane 10, while in this embodiment, the capacitance value of the decoupling capacitor 44 is changed by adjusting the effective overlapping area between the first panel 43 and the ground plane 10.

[0052] As an example, the dielectric substrate 50 is an FR4 dielectric substrate with a thickness of 1.6 mm, a relative permittivity of 4.3, and a loss tangent of 0.025. The first panel 43 is a copper foil and has a rectangular structure. Of course, in other examples, the first panel 43 can also be a circular, fan-shaped, or other structure.

[0053] Please see Figure 3 and Figure 4 The antenna assembly 100 in this embodiment is capable of transmitting signals at 2.4 GHz and 5.2 GHz frequencies. Specifically, Figure 3 The common-difference mode S-parameters of a conventional dual-antenna (without decoupling capacitor 44) and the dual-antenna of this application (with decoupling capacitor 44) are shown. Figure 4 The passive S-parameters of a conventional dual antenna (without decoupling capacitor 44) and the dual antenna of this application (with decoupling capacitor 44) are shown.

[0054] It can be seen that, whether it is the existing dual antenna without decoupling capacitor 44 or the dual antenna of this application with decoupling capacitor 44, its differential mode response can effectively cover the operating frequency bands of WiFi 2.4GHz and WiFi 5.2GHz. This characteristic is mainly due to the half-wave resonant mode of the dipole and the resonant behavior of the L-shaped probe structure.

[0055] However, in terms of common-mode response, the existing dual antennas without decoupling capacitor 44 do not exhibit significant resonant characteristics. Combined with... Figure 4 Actual measurements of the S-parameters show that although the existing dual antennas exhibit return loss S11 resonance in the WiFi 2.4GHz band and the WiFi 4.5–5.5GHz range, their port isolation is poor, and the highest coupling strength S21 is only about -5dB, indicating a strong mutual coupling effect.

[0056] In contrast, the dual antenna of this application, with decoupling capacitor 44, exhibits two distinct common-mode resonance peaks, corresponding to the WiFi 2.4GHz and WiFi 5.2GHz frequency bands, respectively. This newly added common-mode resonance mechanism significantly improves the impedance matching characteristics of the antenna assembly 100 and greatly enhances the isolation between ports. Figure 4 As shown, the dual antennas of this application exhibit a relatively deep decoupling dip in the WiFi 2.4GHz band, i.e., S21 is significantly reduced, while also showing better matching performance and higher isolation level in the WiFi 5.2GHz band.

[0057] This application also provides an electronic device, which includes the antenna assembly 100 described above. In this embodiment, a decoupling component 40 is provided between the first radiator 20 and the second radiator 30. The decoupling component 40 reduces interference between the first radiator 20 and the second radiator 30, thereby improving the quality of signals transmitted by the first radiator 20 and the second radiator 30, thus improving the stability of signal transmission and reception of the electronic device, and improving the accuracy of signal processing by the electronic device, thereby improving the performance of the electronic device. The specific structure and function of the antenna assembly 100 can be found in any of the above embodiments, and will not be repeated here.

[0058] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An antenna assembly, characterized in that, include: Flooring; The first radiator is connected to the ground plane through the first power supply port; The second radiator is connected to the ground plane through the second power supply port; A decoupling component is disposed between the first radiator and the second radiator in a first direction; The decoupling component includes a horizontal arm branch, a vertical arm branch, and a first panel. The horizontal arm branch extends along a first direction, and the vertical arm extends directly along a second direction and connects the horizontal arm branch and the first panel. The first direction and the second direction are perpendicular to each other. The first panel and the ground plane are spaced apart to form a decoupling capacitor.

2. The antenna assembly according to claim 1, characterized in that, The first radiator and the second radiator are symmetrically arranged about the decoupling component; In the second direction, a portion of the transverse arm branch is provided with a first gap from the first radiator, and a portion of the transverse arm branch is provided with a second gap from the second radiator.

3. The antenna assembly according to claim 2, characterized in that, The transverse arm branch includes a first end; Along the first direction, the transverse arm branch partially overlaps with the first radiator, and the overlap distance L1 between the end of the first radiator near the second radiator and the first end satisfies: L1≥1mm.

4. The antenna assembly according to claim 3, characterized in that, The transverse arm branch includes a second end, and the first end and the second end are disposed opposite to each other in the first direction; Along the first direction, the cross arm branch partially overlaps with the second radiator, and the overlap distance L2 between the end of the second radiator near the first radiator and the second end satisfies: L2≥1mm.

5. The antenna assembly according to claim 4, characterized in that, The first radiator includes a first branch and a second branch connected to each other. The first branch and the second branch are L-shaped. The first branch overlaps with the cross arm branch in a first direction. The second branch is connected to the ground plane through the first power supply port.

6. The antenna assembly according to claim 5, characterized in that, The second radiator includes a third branch and a fourth branch connected to each other. The third branch and the fourth branch are L-shaped. The third branch overlaps with the cross arm branch in a first direction. The fourth branch is connected to the ground plane through the second power supply port.

7. The antenna assembly according to claim 1, characterized in that, In the first operating frequency band, the energy of the first radiator is coupled to the crossarm stub to achieve radiation, and / or, the energy of the second radiator is coupled to the crossarm stub to achieve radiation; In the second operating frequency band, the first radiator and the crossarm stub respectively excite secondary mode resonances, and broadband radiation is achieved through coupling of multiple resonant points; and / or, the second radiator and the crossarm stub respectively excite secondary mode resonances, and broadband radiation is achieved through coupling of multiple resonant points.

8. The antenna assembly according to any one of claims 1-7, characterized in that, The antenna assembly further includes a dielectric substrate, and the ground plane, the first radiator, the second radiator and the decoupling component are disposed on the same side surface of the dielectric substrate. The distance D1 between the first panel and the ground plane satisfies: 0.3mm≤D1≤2mm.

9. The antenna assembly according to any one of claims 1-7, characterized in that, The antenna assembly further includes a dielectric substrate, which has a first surface and a second surface in its thickness direction. The ground plane, the first radiator and the second radiator are disposed on the first surface, and the decoupling component is disposed on the second surface. Projected along the thickness direction of the dielectric substrate, at least a portion of the first panel overlaps with the ground plane.

10. An electronic device, characterized in that, Includes the antenna assembly as described in any one of claims 1-9.

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