Antenna device and electronic device
By introducing a decoupling structure into the antenna device and utilizing the coupling current of the first and second decoupling units, the interference problem between the antenna radiators is solved, achieving better isolation and miniaturization while maintaining radiation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
- Filing Date
- 2022-03-09
- Publication Date
- 2026-07-21
Smart Images
Figure CN116780161B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of communication technology, and in particular to an antenna device and electronic device. Background Technology
[0002] With the development of communication technology, electronic devices such as smartphones are able to perform more and more functions, the communication modes of electronic devices are becoming more diversified, and the number of antenna radiators installed inside electronic devices is also increasing.
[0003] However, due to the limitations of miniaturized electronic device design, there is significant interference between multiple antenna radiators, resulting in poor radiation performance of multiple antenna radiators. Summary of the Invention
[0004] This application provides an antenna device and an electronic device. The antenna device has better isolation performance among its multiple radiators, less interference between the multiple radiators, and better radiation performance.
[0005] In a first aspect, this application provides an antenna device, comprising: The first radiator is used to transmit the first excitation current; The second radiator is disposed at a distance from the first radiator, and the second radiator is used to transmit the second excitation current. A grounding plane is used to ground the first excitation current and the second excitation current; and The decoupling structure includes a first decoupling unit and a second decoupling unit. The first decoupling unit is connected to the ground plane, and the second decoupling unit is spaced apart from the ground plane. The first decoupling unit is used to couple with at least one of the first excitation current and the second excitation current flowing on the ground plane and to couple the coupled current to the second decoupling unit, so that the first decoupling unit and the second decoupling unit together increase the isolation between the first radiator and the second radiator.
[0006] Secondly, this application also provides an electronic device, including the antenna device described above.
[0007] The antenna device and electronic device of this application include a first radiator transmitting a first excitation current and a second radiator transmitting a second excitation current. The decoupling structure includes a first decoupling unit connected to a ground plane and a second decoupling unit spaced apart from the ground plane. The first decoupling unit can be coupled to at least one of the first excitation current and the second excitation current flowing on the ground plane, and can couple the coupled current to the second decoupling unit. Thus, the first and second decoupling units can reduce the amount of the second excitation current flowing from the ground plane to the first radiator and reduce the interference of the second radiator to the first radiator, and can also reduce the amount of the first excitation current flowing from the ground plane to the second radiator and reduce the interference of the first radiator to the second radiator. The first and second decoupling units can jointly increase the isolation between the first and second radiators. The decoupling structure can achieve decoupling function, and the antenna device has superior radiation performance. Furthermore, the decoupling structure includes both a first decoupling unit and a second decoupling unit. Compared to a scheme that only sets one decoupling unit, the first decoupling unit and the second decoupling unit of this application each occupy less space. At the same time, the first decoupling unit is set on the ground plane and the second decoupling unit is set at an interval from the ground plane. The placement of the first decoupling unit and the second decoupling unit is more flexible, the entire decoupling structure is more compact, occupies less space, and is more conducive to the miniaturization design of the decoupling structure and antenna device. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0009] Figure 1 This is a schematic diagram of a first structure of the antenna device provided in an embodiment of this application.
[0010] Figure 2 This is a schematic diagram of a second structure of the antenna device provided in an embodiment of this application.
[0011] Figure 3 This is a schematic diagram of a third structure of the antenna device provided in the embodiments of this application.
[0012] Figure 4 This is a schematic diagram of a fourth structure of the antenna device provided in the embodiments of this application.
[0013] Figure 5 This is a fifth structural schematic diagram of the antenna device provided in the embodiments of this application.
[0014] Figure 6 for Figure 1The diagram shows a current distribution of the antenna device.
[0015] Figure 7 for Figure 1 A schematic diagram of the electric field distribution of the antenna device shown.
[0016] Figure 8 for Figure 1 The diagram shows the current intensity of the second excitation current coupled from the ground plane to the first radiator at different phases when the antenna device is equipped with a decoupling structure and without a decoupling structure.
[0017] Figure 9 for Figure 1 The diagram shows the isolation curves between the first and second radiators of the antenna device with and without a decoupling structure.
[0018] Figure 10 for Figure 1 The diagram shows a reflection coefficient curve of the first radiator of the antenna device with and without a decoupling structure.
[0019] Figure 11 for Figure 1 The diagram shows a reflection coefficient curve of the second radiator when the antenna device has a decoupling structure and when it does not.
[0020] Figure 12 This is a sixth structural schematic diagram of the antenna device provided in the embodiments of this application.
[0021] Figure 13 This is a seventh structural schematic diagram of the antenna device provided in the embodiments of this application.
[0022] Figure 14 for Figure 1 The diagram shows the ground plane of the antenna device and a first structural schematic of the first decoupling unit.
[0023] Figure 15 for Figure 1 The diagram shows the ground plane of the antenna device and a second structural schematic of the first decoupling unit.
[0024] Figure 16 for Figure 1 A schematic diagram of one structure of the second decoupling unit of the antenna device shown.
[0025] Figure 17 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation
[0026] The following will refer to the appendices in the embodiments of this application. Figures 1 to 17The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0027] This application provides an antenna device 100 and an electronic device 10. The antenna device 100 is used to implement wireless communication functions. For example, the antenna device 100 can transmit, but is not limited to, Wireless Fidelity (Wi-Fi) signals, Global Positioning System (GPS) signals, 3rd-Generation (3G), 4th-Generation (4G), 5th-Generation (5G), Near Field Communication (NFC) signals, etc.
[0028] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of a first structure of the antenna device 100 provided in an embodiment of this application. Figure 2 This is a schematic diagram of a second structure of the antenna device 100 provided in an embodiment of this application. Figure 3 This is a schematic diagram of a third structure of the antenna device 100 provided in an embodiment of this application. The antenna device 100 includes a first radiator 110, a second radiator 120, a ground plane 130, and a decoupling structure 140.
[0029] The first radiator 110 can transmit a first excitation current I1. This first excitation current I1 can be provided by a feed element; for example, the antenna device 100 may further include a first feed 150, which can be directly or indirectly electrically connected to the first radiator 110 and provide the first excitation current I1 to the first radiator 110. The first radiator 110 can support a first wireless signal in a first frequency band when transmitting the first excitation current I1.
[0030] The second radiator 120 can be spaced apart from the first radiator 110 to avoid mutual interference. The second radiator 120 can transmit a second excitation current I2. This second excitation current I2 can also be provided by a feed element. For example, the antenna device 100 can also include a second feed 160, which can be directly or indirectly electrically connected to the second radiator 120 and provide the second excitation current I2 to the second radiator 120. When transmitting the second excitation current I2, the second radiator 120 can support a second wireless signal in a second frequency band. It is understood that the second wireless signal can be in the same frequency band as the first wireless signal or a different frequency band. When the first wireless signal and the second wireless signal are in the same frequency band, the first radiator 110 and the second radiator 120 can realize multiple-input multiple-output (MIMO) transmission of the wireless signal in that frequency band. This application embodiment does not specifically limit the first wireless signal and the second wireless signal.
[0031] The ground plane 130 can form a common ground. The ground plane 130 can be formed through conductors, printed circuits, or metal printed layers in the antenna device 100 or electronic device 10. For example, the ground plane 130 can be disposed on the circuit board or small board of the antenna device 100 or electronic device 10, or it can be formed on the middle frame of the antenna device 100 or electronic device 10. The first excitation current I1 and the second excitation current I2 can flow on the ground plane 130, which grounds the first excitation current I1 and the second excitation current I2.
[0032] It is understood that the first radiator 110 and the second radiator 120 can be directly or indirectly electrically connected to the grounding plane 130 so that the first excitation current I1 and the second excitation current I2 can flow into the grounding plane 130 through the first radiator 110 and the second radiator 120 and achieve grounding. For example, as Figures 1 to 3 As shown, the first radiator 110 is provided with a first grounding terminal 111, which is electrically connected to the grounding plane 130 so that the first excitation current I1 returns to ground through the first grounding terminal 111; the second radiator 120 is provided with a second grounding terminal 121, which is electrically connected to the grounding plane 130 so that the second excitation current I2 returns to ground through the second grounding terminal 121. The first radiator 110 and the second radiator 120 may be, but are not limited to, inverted F antennas.
[0033] It is understood that the first excitation current I1 and the second excitation current I2 can also flow to the ground plane 130 through other means, such as, but not limited to, the first feed 150 and the second feed 160. For example, please refer to... Figure 4 , Figure 4This is a schematic diagram of a fourth structure of the antenna device 100 provided in the embodiments of this application. The first radiator 110 and the second radiator 120 may not have a first grounding terminal 111 and a second grounding terminal 121. The first radiator 110 and the second radiator 120 may be, but are not limited to, single-stage sub-antennas or patch antennas. One end of the first feed 150 may be electrically connected to the first radiator 110, and the other end may be electrically connected to the grounding plane 130, so that the first excitation current I1 can be grounded. One end of the second feed 160 may be electrically connected to the second radiator 120, and the other end may be electrically connected to the grounding plane 130, so that the second excitation current I2 can be grounded. The first feed 150 and the second feed 160 can be electrically connected to the first radiator 110 and the second radiator 120 via a coaxial line, but not limited to this. The inner layer of the coaxial line can transmit the first excitation current I1 and the second excitation current I2, and the outer shielding layer of the coaxial line can be electrically connected to the ground plane 130 to provide a return loop for the first excitation current I1 and the second excitation current I2.
[0034] It should be noted that, in Figures 1 to 3 In the illustrated embodiment, the first feed 150 and the second feed 160 can also be grounded via a coaxial line, which will not be described in detail here. It is understood that the above are merely exemplary examples of the first excitation current I1 and the second excitation current I2 flowing on the grounding plane 130. The embodiments of this application are not limited to the above examples, and other methods that can realize the flow of the first excitation current I1 and the second excitation current I2 on the grounding plane 130 and return to ground are also within the protection scope of this application.
[0035] Please refer to this again. Figures 1 to 3 The decoupling structure 140 can increase the isolation between the first radiator 110 and the second radiator 120. The decoupling structure 140 may include a first decoupling unit 141 and a second decoupling unit 142. The first decoupling unit 141 may be disposed on the ground plane 130, for example, as... Figures 1 to 3 As shown, the first decoupling unit 141 can be disposed and formed on the ground plane 130. The first decoupling unit 141 can be, but is not limited to, a groove structure formed on the ground plane 130. For example, please refer to... Figure 5 , Figure 5 This is a fifth structural schematic diagram of the antenna device 100 provided in this application embodiment. The first decoupling unit 141 can also be directly or indirectly connected to the ground plane 130. The first decoupling unit 141 can be, but is not limited to, a radiating stub, a grounding stub, or a parasitic stub connected to the ground plane 130. For example, as shown... Figure 5As shown, the first decoupling unit 141 may include a first branch and a second branch that are interconnected and form an L-shaped structure. The first branch may be directly or indirectly connected to the ground plane 130, and the second branch may be connected to the first branch and bent and extended so that the first decoupling unit 141 can form an L-shaped structure. The first branch may be arranged opposite to a part of the structure of the second decoupling unit 142 (e.g., the second coupling part 1421 of the second decoupling unit 142, or the second opening 1321 of the resonant ring 132, as described below), and the second branch may be arranged parallel to the main structure of the second decoupling unit 142 (e.g., the resonant ring body 1324 of the resonant ring 132, as described below), so that the first excitation current I1 and the second excitation current I2 coupled to the first decoupling unit 141 can be more easily coupled to the second decoupling unit 142. It should be noted that the structure of the first decoupling unit 141 is not limited to the above description. Other structures of the first decoupling unit 141 that can be coupled with the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 and can be coupled with the second decoupling unit 142 are all within the protection scope of the embodiments of this application.
[0036] The first decoupling unit 141 can be coupled to at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130. The second decoupling unit 142 can be spaced apart from the ground plane 130 so that the two are not physically connected; the second decoupling unit 142 can also be spaced apart from the first decoupling unit 141 so that the two are not physically connected. The second decoupling unit 142 can be located in a preset space near the first decoupling unit 141 so that the second decoupling unit 142 can generate electromagnetic coupling with the first decoupling unit 141, and the first decoupling unit 141 can couple its coupled current to the second decoupling unit 142.
[0037] Please combine Figure 1 Please refer to Figure 6 , Figure 6 for Figure 1The diagram shows a current distribution of the antenna device 100. When the first excitation current I1 and the second excitation current I2 flow on the ground plane 130, the first decoupling unit 141 can be coupled to the first excitation current I1, or the first decoupling unit 141 can be coupled to the second excitation current I2, or the first decoupling unit 141 can be coupled to both the first excitation current I1 and the second excitation current I2 simultaneously. At this time, the second decoupling unit 142 can be electromagnetically coupled to the first decoupling unit 141, so that the first excitation current I1 or the second excitation current I2 or the first excitation current I1 and the second excitation current I2 can be coupled to the second decoupling unit 142 through the first decoupling unit 141. The first decoupling unit 141 and the second decoupling unit 142 can jointly increase the isolation between the first radiator 110 and the second radiator 120, and the first decoupling unit 141 and the second decoupling unit 142 can jointly achieve the decoupling function.
[0038] It is understandable that, such as Figure 1 As shown, the first decoupling unit 141 may include a first coupling portion 1411, and the second decoupling unit 142 may include a second coupling portion 1421. At least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 can be coupled to the second coupling unit through the first coupling portion 1411 and the second coupling portion 1421. It is understood that the first coupling portion 1411 and the second coupling portion 1421 may be, but are not limited to, solid structures or a combination of solid and virtual structures. For example, the first coupling portion 1411 may be an opening structure formed by two substrates of the first decoupling unit 141 disposed opposite each other and the gap between them; the second coupling portion 1421 may be, but is not limited to, an opening structure formed by two ends of the second decoupling unit 142 disposed opposite each other and the gap between them.
[0039] In order to better couple the first excitation current I1 and the second excitation current I2 to the second decoupling unit 142 through the first decoupling unit 141, the direction of the electric field formed at the coupling region of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 is parallel to that of the first excitation current I1 and the second excitation current I2. For example, the direction of the first electric field E1 formed at the first coupling portion 1411 and the second electric field E2 formed at the second coupling portion 1421 of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 can be parallel, so that the electric field at the first coupling portion 1411 is approximately the same as the electric field at the second coupling portion 1421, and the first coupling portion 1411 is more likely to couple with the second coupling portion 1421. For example, please refer to Figure 7 , Figure 7 for Figure 1 A schematic diagram of the electric field distribution of the antenna device 100 shown. Figure 7 It can be seen that the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 form a first electric field E1 at the first coupling part 1411 of the first decoupling unit 141 with a horizontal direction, and a second electric field E2 at the second coupling part 1421 with a horizontal direction. The approximation of the two electric fields makes it easier for the first excitation current I1 and the second excitation current I2 to be coupled to the second decoupling unit 142 through the first coupling part 1411 and the second coupling part 1421.
[0040] Understandably, the first decoupling unit 141 can couple a portion of the first excitation current I1 and / or a portion of the second excitation current I2 flowing on the ground plane 130 to the second decoupling unit 142. Thus, with less second excitation current I2 flowing through the ground plane 130 to the first radiator 110, the decoupling structure 140 can reduce the interference of the second radiator 120 to the first radiator 110; or, with less first excitation current I1 flowing through the ground plane 130 to the second radiator 120, the decoupling structure 140 can reduce the interference of the first radiator 110 to the second radiator 120. For example, please refer to... Figure 2 Please refer to Figure 8 and Figure 9 , Figure 8 for Figure 1 The diagram shows the current intensity of the second excitation current I2 coupled from the ground plane 130 to the first radiator 110 under different phases when the antenna device 100 is equipped with the decoupling structure 140 and without the decoupling structure 140. Figure 9 for Figure 1 The diagram shows the isolation curves between the first radiator 110 and the second radiator 120 of the antenna device 100 with and without the decoupling structure 140. Figure 8 Figures a1, b1, c1, and d1 in the middle left section are schematic diagrams of the current intensity of the second excitation current I2 flowing through the ground plane 130 to the first radiator 110 at phases of 0°, 45°, 90°, and 135° when the antenna device 100 does not have a decoupling structure 140. Figure 8 Figures a2, b2, c2, and d2 in the middle right part are schematic diagrams of the current intensity of the second excitation current I2 flowing through the ground plane 130 to the first radiator 110 at phases of 0°, 45°, 90°, and 135° when the antenna device 100 is equipped with a decoupling structure 140. Figure 9 Curve S1 represents the isolation curve of the antenna device 100 without the decoupling structure 140, and curve S2 represents the isolation curve of the antenna device 100 with the decoupling structure 140. Figure 8It can be seen that after the antenna device 100 is equipped with the decoupling structure 140, the second excitation current I2 coupled from the ground plane 130 to the first radiator 110 is significantly reduced; Figure 9 As can be seen, after the antenna device 100 is equipped with the decoupling structure 140, the isolation curve S2 shows a significant dip, and the isolation between the first radiator 110 and the second radiator 120 is significantly improved. Therefore, the decoupling structure 140 of this embodiment can significantly reduce the interference between the first radiator 110 and the second radiator 120, and the decoupling effect of the decoupling structure 140 is better.
[0041] It is understandable that the decoupling structure 140, through the first decoupling unit 141, couples the first excitation current I1 and the second excitation current I2 on the ground plane 130 to the second decoupling unit 142. The decoupling structure 140 will not significantly affect the performance of the first radiator 110 in transmitting the first wireless signal generated by the first excitation current I1, nor will it significantly affect the performance of the second radiator 120 in transmitting the second wireless signal generated by the second excitation current I2. For example, please refer to... Figure 2 Please refer to Figure 10 and Figure 11 , Figure 10 for Figure 1 The diagram shows a reflection coefficient curve of the first radiator 110 with and without the decoupling structure 140 in the antenna device 100. Figure 11 for Figure 1 The diagram shows a reflection coefficient curve of the second radiator 120 when the antenna device 100 is equipped with the decoupling structure 140 and without the decoupling structure 140. Figure 10 medium curve S3, Figure 11 Curve S5 is a reflection coefficient curve of the first radiator 110 and the second radiator 120 when the antenna device 100 does not have a decoupling structure 140. Figure 10 medium curve S4, Figure 11 Curve S6 represents the reflection coefficient curve of the first radiator 110 and the second radiator 120 when the antenna device 100 is equipped with the decoupling structure 140. From curves S4 to S6, it can be seen that before and after the introduction of the decoupling structure 140, the first radiator 110 and the second radiator 120 are well matched. The introduction of the decoupling structure 140 does not cause a deterioration in the standing wave ratio of the first radiator 110 and the second radiator 120, and the decoupling structure 140 does not affect the radiation performance of the first radiator 110 and the second radiator 120.
[0042] It is understood that when at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 is coupled to the second decoupling unit 142 through the first decoupling unit 141, the first decoupling unit 141 and the second decoupling unit 142 are coupled together to form a resonance, which can support a wireless signal of a preset wavelength. The preset wavelength can be associated with the frequency of the resonance, for example, but not limited to, the two conforming to the relationship that the wave speed is equal to the product of the frequency and the wavelength. Since the length of the radiator affects the frequency of the resonance, in this embodiment, the first decoupling unit 141 and the second decoupling unit 142 resonate together, and the overall length of the first decoupling unit 141 and the second decoupling unit 142 can be comparable to the length of a decoupling unit in the related art. Therefore, the length of a single first decoupling unit 141 or second decoupling unit 142 can be small, so that the antenna device 100 can achieve a miniaturized design. For example, in related technologies, the length of a decoupling unit is often half the wavelength at which the decoupling unit resonates; however, in this embodiment, the length of the first decoupling unit 141 can be less than or equal to one-quarter of the preset wavelength, and the length of the second decoupling unit 142 can be less than half the preset wavelength. The space occupied by both the first and second decoupling units 141 and 142 is relatively small, which is beneficial for miniaturizing the antenna device 100. It is understood that the length of the decoupling unit can refer to the total length between the two ends of the decoupling unit. For example, when the decoupling unit is a ring, the length of the decoupling unit can be the length of the curve between the two ends of the ring. The length of the decoupling unit in this embodiment can refer to the relevant regulations on the length of the radiator in a radio frequency antenna, and this embodiment does not limit it in this respect.
[0043] The antenna device 100 of this application embodiment includes a decoupling structure 140 comprising a first decoupling unit 141 connected to a ground plane 130 and a second decoupling unit 142 spaced apart from the ground plane 130. The first decoupling unit 141 can be coupled to at least one of a first excitation current I1 transmitted by a first radiator 110 flowing on the ground plane 130 and a second excitation current I2 transmitted by a second radiator 120, and can couple the coupled current to the second decoupling unit 142. Thus, the first decoupling unit 141 and the second decoupling unit 142 can reduce the current from the ground plane 130. The second excitation current I2 flowing from the ground plane 130 to the first radiator 110 reduces the interference of the second radiator 120 to the first radiator 110. It can also reduce the first excitation current I1 flowing from the ground plane 130 to the second radiator 120 and reduce the interference of the first radiator 110 to the second radiator 120. The first decoupling unit 141 and the second decoupling unit 142 can jointly increase the isolation between the first radiator 110 and the second radiator 120. The decoupling structure 140 can realize the decoupling function, and the radiation performance of the antenna device 100 is better. Furthermore, the decoupling structure 140 includes both a first decoupling unit 141 and a second decoupling unit 142. Compared to a scheme with only one decoupling unit, the first decoupling unit 141 and the second decoupling unit 142 of this application occupy less space. At the same time, the first decoupling unit 141 is disposed on the ground plane 130 and the second decoupling unit 142 is disposed at an interval from the ground plane 130. The placement of the first decoupling unit 141 and the second decoupling unit 142 is more flexible, the entire decoupling structure 140 is more compact, occupies less space, and is more conducive to the miniaturization design of the decoupling structure 140 and the antenna device 100.
[0044] Specifically, when at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 is coupled to the second decoupling unit 142 through the first decoupling unit 141, and the first decoupling unit 141 and the second decoupling unit 142 are coupled together to form a resonance, this resonance can support a first wireless signal in a first frequency band or a second wireless signal in a second frequency band. Therefore, the decoupling structure 140 formed by the first decoupling unit 141 and the second decoupling unit 142 can resonate at the resonant frequency of the first radiator 110 or the resonant frequency of the second radiator 120. The decoupling structure 140 can better couple with the first excitation current I1 and the second excitation current I2 on the ground plane 130, preventing more of the first excitation current I1 from flowing to the second radiator 120 and causing interference, and also preventing more of the second excitation current I2 from flowing to the first radiator 110 and causing interference. The decoupling effect of the decoupling structure 140 is better.
[0045] Please refer to this again. Figures 1 to 3 Please refer to Figure 12 , Figure 12This is a sixth structural schematic diagram of the antenna device 100 provided in the embodiments of this application. The antenna device 100 in the embodiments of this application may further include a substrate 170. A ground plane 130 may be formed on the substrate 170, and a decoupling structure 140 may be disposed on the substrate 170.
[0046] The substrate 170 may include a first surface 171 and a second surface 172 disposed opposite to each other. A ground plane 130 may be formed on one of the surfaces, such as the first surface 171. It is understood that the ground plane 130 may be formed on a portion or all of the first surface 171 of the substrate 170 by means of a copper-clad process. A decoupling structure 140 may be disposed on (or formed on) the substrate 170. For example, the first decoupling unit 141 may be a defective ground structure (DGS) decoupling unit disposed on (or formed on) the ground plane 130, and the second decoupling unit 142 may be a metamaterial structure decoupling unit disposed on the substrate 170.
[0047] It is understood that the substrate 170 may be, but is not limited to, the circuit board, motherboard, small board, bracket, or other structures of the antenna device 100, electronic device 10. This application does not limit this aspect.
[0048] It is understood that the decoupling structure 140 and the ground plane 130 may be located on the same surface of the substrate 170, such as the first surface 171. For example, a portion of the first surface 171 of the substrate 170 may be formed into the ground plane 130 through a copper-cladding process, and another portion of the first surface 171 may be formed into the second decoupling unit 142 of the decoupling structure 140 through processes such as etching. An opening groove penetrating the thickness direction of the ground plane 130 may be formed in the area where the substrate 170 is located to form the first decoupling unit 141 of the decoupling structure 140. Of course, a portion of the decoupling structure 140 may also be located on a different surface of the substrate 170 from the ground plane 130, and this embodiment of the application does not limit this.
[0049] It is understood that the first radiator 110 and the second radiator 120 may also be located on the same surface of the substrate 170 as the ground plane 130. For example, the first radiator 110 and the second radiator 120 may be formed on the first surface 171 of the substrate 170 by etching, but are not limited to this. Furthermore, the first radiator 110 and the second radiator 120 may also be connected to the first surface 171, and the first radiator 110 and the second radiator 120 may be, but are not limited to, radiating branches, radiating patches, etc. This application does not specifically limit the specific structure and placement of the first radiator 110 and the second radiator 120.
[0050] In the antenna device 100 of this application embodiment, both the decoupling structure 140 and the ground plane 130 are formed on the substrate 170. On the one hand, the decoupling structure 140 and the ground plane 130 are closer together, which is more conducive to the coupling of the decoupling structure 140 with the first excitation current I1 and the second excitation current I2 on the ground plane 130. On the other hand, the structure of the antenna device 100 is more compact, which is more conducive to realizing miniaturized design.
[0051] Please refer to the following: Figure 13 , Figure 13 This is a seventh structural schematic diagram of the antenna device 100 provided in the embodiments of this application. The partial decoupling structure 140 can be disposed on a different substrate 170 or a different carrier than the ground plane 130.
[0052] For example, the ground plane 130 can be disposed on the substrate 170 of the antenna device 100 or electronic device 10, such as a circuit board, motherboard, or small board. The first decoupling unit 141 of the decoupling structure 140 can be disposed on the substrate 170 of the circuit board, motherboard, or small board along with the ground plane 130. The first radiator 110 and the second radiator 120 can be disposed on another carrier of the antenna device 100 or electronic device 10, such as a frame 180 (e.g., the middle frame 300 mentioned later). The second decoupling unit 142 of the decoupling structure 140 can be disposed on the frame 180 of the antenna device 100 or electronic device 10 along with the first radiator 110 and the second radiator 120, or disposed on another substrate. Thus, the second decoupling unit 142 can be disposed on different carriers from the first decoupling unit 141 and the ground plane 130.
[0053] Of course, in actual production, the grounding plane 130 and the decoupling structure 140 can be disposed on the same substrate 170, while the first radiator 110 and the second radiator 120 can be disposed on another carrier. The specific placement of the first radiator 110, the second radiator 120, the grounding plane 130, and the decoupling structure 140 is not limited in the embodiments of this application.
[0054] It is understood that the second decoupling unit 142, the first decoupling unit 141, and the grounding plane 130 can be at the same horizontal height. Of course, the second decoupling unit 142 can also be at a different horizontal height from the first decoupling unit 141 and the grounding plane 130, so that there is a height difference between the second decoupling unit 142 and the first decoupling unit 141 and the grounding plane 130; for example, the first decoupling unit 141 on the grounding plane 130 can be located above or below the second decoupling unit 142. This application embodiment does not limit the specific location of the second decoupling unit 142, the first decoupling unit 141, and the grounding plane 130.
[0055] Please refer to this again. Figures 1 to 3In order to better improve the isolation between the first radiator 110 and the second radiator 120, such as Figure 1 As shown, the decoupling structure 140 in this embodiment can be located between the first radiator 110 and the second radiator 120. Both the first decoupling unit 141 and the second decoupling unit 142 can be located between the first radiator 110 and the second radiator 120.
[0056] It is understood that "between the first radiator 110 and the second radiator 120" can refer to any region within the three-dimensional space between the first radiator 110 and the second radiator 120. For example, the first decoupling unit 141 and the second decoupling unit 142 can be located in the region between the first radiator 110 and the second radiator 120 at the same height as the first radiator 110 and the second radiator 120; as another example, the first decoupling unit 141 and the second decoupling unit 142 can also be located in the region between the first radiator 110 and the second radiator 120 at different heights from the first radiator 110 and the second radiator 120. The specific location of the first decoupling unit 141 and the second decoupling unit 142 is not limited in this embodiment.
[0057] When the decoupling structure 140 is located between the first radiator 110 and the second radiator 120, the first decoupling unit 141 disposed between the first radiator 110 and the second radiator 120 can physically block the flow of the first excitation current I1 to the second radiator 120, and can also further block the flow of the second excitation current I2 to the first radiator 110. Thus, in addition to coupling the first excitation current I1 and the second excitation current I2 to the second decoupling unit 142, the first decoupling unit 141 can further block the current paths of the first excitation current I1 and the second excitation current I2, further reducing the interference between the first excitation current I1 and the second excitation current I2. Furthermore, the second decoupling unit 142 disposed between the first radiator 110 and the second radiator 120 can not only resonate with the first decoupling unit 141 to increase the isolation between the first radiator 110 and the second radiator 120, but the second radiator 120 itself can also spatially block the propagation of the first wireless signal and the second wireless signal. In this embodiment, the decoupling structure 140 is disposed between the first radiator 110 and the second radiator 120, which can significantly reduce the mutual interference between the first radiator 110 and the second radiator 120.
[0058] Please refer to this again. Figures 1 to 3 Please refer to Figure 14 and Figure 15 , Figure 14 for Figure 1 The diagram shows a first structural schematic of the ground plane 130 and the first decoupling unit 141 of the antenna device 100. Figure 15 for Figure 1 The diagram shows a second structural schematic of the ground plane 130 and the first decoupling unit 141 of the antenna device 100. The first decoupling unit 141 may be a groove 131 formed on the ground plane 130.
[0059] A ground plane 130 may be formed on one side of the substrate 170, such as the first side 171. The ground plane 130 may include an edge 133 and a body 134. A groove 131 may be formed on the ground plane 130. The groove 131 may extend from the edge 133 of the ground plane 130 toward the body 134 of the ground plane 130, such that the groove 131 forms a first opening 1311 at the edge 133 of the ground plane 130. The groove 131 may be an open floor groove formed on the ground plane 130. The first decoupling unit 141 may include the groove 131.
[0060] It is understandable that the ground plane 130 can have a certain thickness when it is laid on the first surface 171 of the substrate 170. For example... Figure 14 As shown, considering practical production issues, the groove 131 can penetrate the entire substrate 170 and the ground plane 130 along the thickness direction of the substrate 170 (i.e., the thickness direction of the ground plane 130). Of course, as... Figure 15 As shown, the groove 131 can also penetrate the entire ground plane 130 along the thickness direction of the ground plane 130 without penetrating the substrate 170.
[0061] It is understood that the groove 131 may include a first sidewall 1312, a bottom wall 1313, and a second sidewall 1314 formed inside the grounding plane 130. The first sidewall 1312, the bottom wall 1313, and the second sidewall 1314 may be connected sequentially. The first sidewall 1312 and the second sidewall 1314 may be located on both sides of the bottom wall 1313 and arranged opposite to each other, so that the groove 131 can form an open groove structure with the opening located at the edge of the grounding plane 130. The first opening 1311 may be formed in the region of the groove 131 near the edge 133 of the grounding plane 130. The first opening 1311 may include a portion of the sidewall region of the first sidewall 1312 and the second sidewall 1314 at the edge 133 of the grounding plane 130, and the gap between these two portion of the sidewall region.
[0062] It is understood that the first opening 1311 can be the first coupling portion 1411 of the first decoupling unit 141, and at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 can be coupled to the second decoupling unit 142 through the first opening 1311. For example, by... Figure 6 and Figure 7It can be seen that the electric field strength of the first excitation current I1 and the second excitation current I2 is the largest at the first opening 1311 of the groove 131, and the electric field strength is the smallest at the closed part (bottom wall 1313) of the groove 131. In this embodiment of the application, the first excitation current I1 and the second excitation current I2 are more easily coupled to the second decoupling unit 142 through the first opening 1311.
[0063] When at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 is coupled to the second decoupling unit 142 through the first opening 1311, the first sidewall 1312 and the second sidewall 1314 of the groove 131, which are disposed opposite to each other, can be equivalent to two electrodes of a capacitor, so that the first sidewall 1312 and the second sidewall 1314 can form an equivalent capacitance. It is understood that, considering that the electric field strength of the groove 131 at the first opening 1311 is greater than the electric field strength of other areas of the groove 131, the sidewall areas of the first sidewall 1312 and the second sidewall 1314 at the edge of the ground plane 130 are more likely to be equivalent to two electrodes of a capacitor, so that the first opening 1311 can also form an equivalent capacitance, and the capacitance value of the equivalent capacitance formed by the first opening 1311 can be greater than the capacitance value of the equivalent capacitance formed in other areas of the groove 131.
[0064] Understandably, the performance of the first decoupling unit 141 can be adjusted by adjusting the distance between a portion of the first sidewall 1312 at the edge of the ground plane 130 and a portion of the second sidewall 1314 at the edge of the ground plane 130 (i.e., the width of the first opening 1311), so that the first decoupling unit 141 can be more easily coupled with the first excitation current I1, the second excitation current I2, and the second decoupling unit 142.
[0065] The length of the groove 131 can be less than or equal to one-quarter of a preset wavelength. This preset wavelength can be the wavelength of the wireless signal supported when the first decoupling unit 141 and the second decoupling unit 142 resonate together. For example, when at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 is coupled to the second decoupling unit 142 through the first opening 1311, and the first and second decoupling units 141 and 142 resonate together and support a wireless signal of the preset wavelength, the length of the groove 131 can be less than or equal to one-quarter of the preset wavelength. It is understood that when the preset wavelength is the first wavelength of the first wireless signal or the second wavelength of the second wireless signal, the length of the groove 131 can be less than or equal to one-quarter of the first wavelength, or the length of the groove 131 can be less than or equal to one-quarter of the second wavelength. It is understood that the length of the groove 131 can be the total length from its opening to its closing point (e.g., from the first opening 1311 to the bottom wall 1313). The groove 131 can be, but is not limited to, a straight strip structure, a curved structure, or a multi-segment structure. The length of the groove 131 can be referred to the foregoing description of the length of the first decoupling unit 141, and will not be repeated here. It should be noted that the length of the groove 131 in this embodiment may also be greater than one-quarter of the preset wavelength, and the specific length of the groove 131 is not limited in this embodiment.
[0066] It is understood that the length of the groove 131 in this embodiment is small, the groove 131 has little impact on the structural strength of the ground plane 130, and the groove 131 will not affect the layout of the ground plane 130, circuit board 400 and other structures.
[0067] Understandably, to improve the decoupling effect of the decoupling structure 140, the first opening 1311 of the groove 131 can be formed between the projection areas of the first radiator 110 and the second radiator 120 on the ground plane 130. Since the electric field strength at the first opening 1311 of the groove 131 is greater than the electric field strength in other areas of the groove 131, placing the first opening 1311 between the first radiator 110 and the second radiator 120 makes it easier for the first excitation current I1 and the second excitation current I2 to couple to the second decoupling unit 142 through the first opening 1311. Of course, other areas of the groove 131 can be located between the projection areas of the first radiator 110 and the second radiator 120 on the ground plane 130, or they can be located outside the projection areas. This application does not limit the specific structure of the groove 131.
[0068] The first decoupling unit 141 in this application embodiment includes a groove 131 with a first opening 1311 formed on the ground plane 130. The groove 131 has a small length and has little impact on the layout of the ground plane 130, the circuit board 400 of the antenna device 100 or the electronic device 10, and the substrate 170, which can realize the miniaturization design of the antenna device 100 or the electronic device 10.
[0069] It should be noted that the structure of the first decoupling unit 141 in this application embodiment is not limited to the structure of the groove 131 described above. For example, the first decoupling unit 141 may also include circuit structures such as capacitors and inductors electrically connected to the groove 131; furthermore, the first decoupling unit 141 may also include multiple interconnected or electrically connected slot structures. This application embodiment does not limit the specific structure of the first decoupling unit 141.
[0070] Please refer to this again. Figures 1 to 3 Please refer to Figure 16 , Figure 16 for Figure 1 The diagram shows a structural schematic of the second decoupling unit 142 of the antenna device 100. The second decoupling unit 142 may include a resonant ring 132 (Split Resonant Ring, abbreviated as SRR).
[0071] The resonant ring 132 may include a first end 1322, a second end 1323, and a resonant ring body 1324 formed between the first end 1322 and the second end 1323. The resonant ring body 1324 can be bent from the first end 1322 toward the second end 1323 to form a ring. The first end 1322 and the second end 1323 of the resonant ring 132 may be spaced apart so that a second opening 1321 can be formed between the first end 1322 and the second end 1323. The second opening 1321 may include the first end 1322, the second end 1323 of the resonant ring 132, and a gap formed between the first end 1322 and the second end 1323. The second opening 1321 may form a second coupling portion 1421 of the resonant ring 132, through which at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 may be coupled to the resonant ring 132 (resonant ring body 1324) via the first opening 1311 and the second opening 1321.
[0072] Understandably, by Figure 6 and Figure 7 It can be seen that the electric field strength of the first excitation current I1 and the second excitation current I2 is the largest at the second opening 1321 of the resonant ring 132, and the electric field strength is the smallest at a distance from the second opening 1321. In this embodiment of the application, the first excitation current I1 and the second excitation current I2 are more easily coupled to the second decoupling unit 142 through the second opening 1321.
[0073] It is understood that when at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 is coupled to the resonant ring 132 through the first opening 1311 and the second opening 1321, the first end 1322 and the second end 1323 of the resonant ring 132 can be equivalent to two electrodes of a capacitor, so that the second opening 1321 can form an equivalent capacitance. Simultaneously, a portion of the sidewall region of the first sidewall 1312 and the second sidewall 1314 of the groove 131 at the edge of the ground plane 130 can be equivalent to two electrodes of a capacitor, so that the first opening 1311 can form an equivalent capacitance. Furthermore, the first opening 1311 and the second opening 1321 coupling the first excitation current I1 and the second excitation current I2 can also be equivalent to two electrodes of a capacitor, so that the first opening 1311 and the second opening 1321 can also jointly form an equivalent capacitance. At the same time, the resonant ring body 1324 of the resonant ring 132 can form an equivalent inductance. Based on this, the groove 131 and the resonant ring 132 can together form a complex LC oscillation circuit composed of multiple equivalent capacitances and equivalent inductances. By adjusting one or more parameters such as the width of the first opening 1311 and the second opening 1321, the distance between the first opening 1311 and the second opening 1321, and the length of the resonant ring body 1324, the performance of the decoupling structure 140 can be adjusted so that the first excitation current I1 and the second excitation current I2 can be more easily coupled with the first decoupling unit 141 and the second decoupling unit 142.
[0074] The length of the resonant ring 132 can be less than half the preset wavelength. This preset wavelength can be the wavelength of the wireless signal supported by the resonance formed by the first decoupling unit 141 (e.g., groove 131) and the second decoupling unit 142 (e.g., resonant ring 132). For example, when at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 is coupled to the resonant ring 132 through the first opening 1311 and the second opening 1321, and the groove 131 and the resonant ring 132 jointly form a resonance and support a wireless signal of the preset wavelength, the length of the resonant ring 132 can be less than half the preset wavelength. It is understood that when the preset wavelength is the first wavelength of the first wireless signal or the second wavelength of the second wireless signal, the length of the resonant ring 132 can be less than half the first wavelength or less than half the second wavelength. It is understood that the length of the resonant ring 132 can be the length between the first end 1322 and the second end 1323 of the resonant ring 132. The length of the resonant ring 132 can be referred to the foregoing description of the length of the second decoupling unit 142, and will not be repeated here. The resonant ring 132 in this embodiment has a smaller length, allowing for a more compact structure and miniaturized design. It should be noted that the length of the resonant ring 132 in this embodiment can also be equal to or greater than half the preset wavelength (for example, the length of the resonant ring 132 can be equal to or greater than half the first wavelength / second wavelength). This embodiment does not limit the specific length of the resonant ring 132.
[0075] It is understood that the second opening 1321 can be located between the first radiator 110 and the second radiator 120 to allow the resonant ring 132 to have better decoupling performance. Of course, the second opening 1321 may not be located between the first radiator 110 and the second radiator 120. Similarly, all of the resonant rings 132 can be located between the first radiator 110 and the second radiator 120; however, at least some of the resonant rings 132 may not be located between the first radiator 110 and the second radiator 120. This application embodiment does not limit the specific location of the resonant ring 132.
[0076] It is understood that the second opening 1321 may also be located within a predetermined range near the first opening 1311, so that the first excitation current I1 and the second excitation current I2 can be coupled from the second opening 1321 to the first opening 1311. In some embodiments, the second opening 1321 may be positioned directly opposite the first opening 1311, so that the first excitation current I1 and the second excitation current I2 coupled to the first opening 1311 can be better coupled to the second opening 1321.
[0077] Understandably, please refer to this again. Figure 7In order to better couple the first excitation current I1 and the second excitation current I2 to the second opening 1321 through the first opening 1311, the directions of the first electric field E1 formed at the first opening 1311 and the second electric field E2 formed at the second opening 1321 by at least one of the first excitation current I1 and the second excitation current I2 flowing on the ground plane 130 can be parallel, so that the electric field at the first opening 1311 is approximately the same as the electric field at the second opening 1321, and the groove 131 is more likely to couple with the resonant ring 132.
[0078] The first decoupling unit 141 of this application embodiment includes a groove 131 with a first opening 1311 formed on the ground plane 130, and the second decoupling unit 142 includes a resonant ring 132 structure with a second opening 1321. The resonant ring 132 is coupled by the groove 131 on the ground plane 130. The groove 131 can enhance the structural effect of the resonant ring 132. The length of the resonant ring 132 can be less than half the wavelength, and the resonant ring 132 can achieve a miniaturized design.
[0079] It should be noted that the structure of the second decoupling unit 142 in this application embodiment is not limited to the structure of the resonant ring 132 described above. For example, the second decoupling unit 142 may also include a decoupling unit formed by combining two or more independent resonant rings 132; for another example, the second decoupling unit 142 may also include two or more resonant ring 132 body structures that are interconnected or electrically connected to each other; and for yet another example, the second decoupling unit 142 may also include electrically connected circuit structures such as capacitors and inductors. This application embodiment does not limit the specific structure of the second decoupling unit 142.
[0080] Based on the structure of the antenna device 100 described above, this application also provides an electronic device 10. The electronic device 10 can be a smartphone, tablet computer, or other similar device, and can also be a gaming device, augmented reality (AR) device, automotive device, data storage device, audio playback device, video playback device, laptop computer, desktop computing device, etc. Please refer to... Figure 17 , Figure 17 This is a schematic diagram of the structure of an electronic device 10 provided in an embodiment of this application. In addition to the antenna device 100, the electronic device 10 may also include a display screen 200, a mid-frame 300, a circuit board 400, a battery 500, and a back cover 600.
[0081] The display screen 200 is disposed on the mid-frame 300 to form the display surface of the electronic device 10, and is used to display images, text and other information. The display screen 200 may be a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display screen.
[0082] The middle frame 300 can be a thin plate or sheet structure, or a hollow frame structure. The middle frame 300 provides support for electronic devices or functional components in the electronic device 10, allowing them to be mounted together. For example, the middle frame 300 can have grooves, protrusions, through holes, or other structures to facilitate the mounting of electronic devices or functional components. It is understood that the material of the middle frame 300 can include metal or plastic. It is also understood that when the middle frame 300 is made of metal, one or more of the first radiator 110 and the second radiator 120 can be metal segments on the middle frame 300.
[0083] The circuit board 400 is mounted on the mid-frame 300 for fixation and is sealed inside the electronic device 10 by the rear cover 600. The circuit board 400 can be the motherboard of the electronic device 10. The circuit board 400 may integrate a processor, and may also integrate one or more functional components such as a headphone jack, accelerometer, gyroscope, and motor. Simultaneously, the display screen 200 can be electrically connected to the circuit board 400 to control the display via the processor on the circuit board 400. One or more of the first feed 150, second feed 160, and ground plane 130 of the antenna device 100 can be mounted on the circuit board 400. Of course, these components can also be mounted on a smaller board of the electronic device 10; this is not limited here.
[0084] The battery 500 is mounted on the mid-frame 300 and sealed inside the electronic device 10 by the rear cover 600. The battery 500 is electrically connected to the circuit board 400 to power the electronic device 10. The circuit board 400 may contain a power management circuit. This power management circuit distributes the voltage provided by the battery 500 to the various electronic components within the electronic device 10.
[0085] The back cover 600 is connected to the middle frame 300. For example, the back cover 600 can be attached to the middle frame 300 using an adhesive such as double-sided tape to achieve the connection with the middle frame 300. The back cover 600, together with the middle frame 300 and the display screen 200, seals the electronic components and functional parts of the electronic device 10 inside the electronic device 10, thereby providing protection for the electronic components and functional parts of the electronic device 10.
[0086] It should be noted that the above is merely an exemplary description of the electronic device 10 in this application embodiment. The electronic device 10 may also include, but is not limited to, a camera module, an audio-visual conversion module, a sensor module, etc. The specific structure of the electronic device 10 is not limited in this application embodiment.
[0087] It should be understood that in the description of this application, terms such as "first" and "second" are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.
[0088] The antenna device and electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this application; at the same time, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. An antenna device, characterized in that, include: The first radiator is used to transmit the first excitation current; The second radiator is disposed at a distance from the first radiator, and the second radiator is used to transmit the second excitation current. A grounding plane is used to ground the first excitation current and the second excitation current. A groove is formed on the grounding plane, and the groove extends from the edge of the grounding plane toward the body of the grounding plane, so that the groove forms a first opening at the edge of the grounding plane. and The decoupling structure includes a first decoupling unit and a second decoupling unit, wherein the first decoupling unit is connected to the ground plane and the second decoupling unit is spaced apart from the ground plane. The first decoupling unit is used to couple with at least one of the first excitation current and the second excitation current flowing on the ground plane and to couple the coupled current to the second decoupling unit, so that the first decoupling unit and the second decoupling unit together increase the isolation between the first radiator and the second radiator. The first decoupling unit includes the groove, and at least one of the first excitation current and the second excitation current flowing on the ground plane is coupled to the second decoupling unit through the first opening.
2. The antenna device according to claim 1, characterized in that, The first opening is formed between the projection areas of the first radiator and the second radiator on the ground plane.
3. The antenna device according to claim 1, characterized in that, The groove includes a first sidewall, a bottom wall, and a second sidewall connected in sequence. The second sidewall and the first sidewall are located on opposite sides of the bottom wall.
4. The antenna device according to claim 1, characterized in that, The length of the groove is less than or equal to one-quarter of a preset wavelength, where the preset wavelength is the wavelength of the wireless signal supported when the first decoupling unit and the second decoupling unit resonate together.
5. The antenna device according to claim 1, characterized in that, The second decoupling unit includes a resonant ring, with a first end and a second end of the resonant ring spaced apart to form a second opening between the first end and the second end. At least one of the first excitation current and the second excitation current flowing on the ground plane is coupled to the resonant ring through the first opening and the second opening.
6. The antenna device according to claim 5, characterized in that, The first opening is positioned directly opposite the second opening.
7. The antenna device according to claim 5, characterized in that, The electric fields formed at the first opening and the second opening by at least one of the first excitation current and the second excitation current flowing on the ground plane are parallel in direction.
8. The antenna device according to claim 5, characterized in that, The length of the resonant ring is less than or equal to half of a preset wavelength, where the preset wavelength is the wavelength of the wireless signal supported when the first decoupling unit and the second decoupling unit jointly form resonance.
9. The antenna device according to any one of claims 1 to 8, characterized in that, At least one of the first excitation current and the second excitation current flowing on the ground plane is parallel to the direction of the electric field formed at the coupling region of the first decoupling unit and the second decoupling unit.
10. The antenna device according to any one of claims 1 to 8, characterized in that, The first radiator supports a first frequency band wireless signal through the first excitation current, and the second radiator supports a second frequency band wireless signal through the second excitation current; wherein, The first decoupling unit and the second decoupling unit are used to jointly form a resonance, which is used to support wireless signals in the first frequency band or the second frequency band.
11. The antenna device according to any one of claims 1 to 8, characterized in that, The antenna device further includes a substrate, the ground plane is formed on the substrate, and the first radiator, the second radiator, and the decoupling structure are disposed on the substrate.
12. An electronic device, characterized in that, Includes the antenna device as described in any one of claims 1 to 11.