Antenna assembly and electronic device
By using a shared antenna assembly and conditioning circuit, the technical problem of deploying multiple antennas in a small space was solved, achieving efficient coverage of multi-band signal transmission and improving communication performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
- Filing Date
- 2023-07-31
- Publication Date
- 2026-05-12
AI Technical Summary
在电子设备中如何在较小的空间内布设多个天线以实现多种无线通信功能，同时提高通信性能。
采用共体形式的天线组件，通过第一和第二天线单元之间的缝隙耦合，结合调节电路调控谐振电流的路径长度，确保不同目标频段的辐射效率独立提升。
It enables wireless communication covering multiple frequency bands within a small footprint, improves the radiation efficiency of each frequency band, avoids mutual interference between frequency bands, and enhances communication performance.
Smart Images
Figure CN119447815B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of communication technology, and more specifically, to an antenna assembly and electronic device. Background Technology
[0002] With the continuous development of communication technology, it is necessary to deploy multiple antennas in electronic devices such as mobile phones. As these devices become smaller and their communication functions become more powerful, how to deploy multiple antennas within a small space has become a key issue.
[0003] Related technologies propose configuring multiple antennas into a shared antenna assembly to reduce antenna space requirements while achieving multifunctional wireless communication. However, the communication performance of the antenna assemblies in these technologies needs further improvement. Summary of the Invention
[0004] This application provides an antenna assembly and an electronic device. The various aspects related to the embodiments of this application are described below.
[0005] In a first aspect, an antenna assembly is provided, comprising: a first antenna element including a first radiator and a first feed source, the first radiator having a first ground terminal, a first free terminal, and a first feed point, the first feed point being located between the first ground terminal and the first free terminal, the first feed source being connected to the first feed point, and the first feed source exciting the first radiator to resonate in a first target frequency band; and a second antenna element including a second radiator, a second feed source, and an adjustment circuit, the second radiator having a second ground terminal and a second free terminal, the second free terminal and the first free terminal being spaced apart to form a gap, the second radiator and the first feed source being connected to the first feed point. The first radiator is coupled through the gap; wherein the second radiator further has a second feed point and a third feed point, the second feed point and the third feed point being located between the second free end and the second ground end, the second feed source being connected to the second feed point, the adjustment circuit being connected to the third feed point, the second feed source exciting the second radiator and / or the first radiator to resonate at a second target frequency band, the adjustment circuit being used to regulate the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the first target frequency band being different from the path of the resonant current corresponding to the second target frequency band.
[0006] In a second aspect, an electronic device is provided, the electronic device comprising an antenna assembly as described in the first aspect.
[0007] This application provides an antenna assembly comprising a first antenna element and a second antenna element. The first antenna element includes a first radiator and a first feed source. The first feed source is connected to a first feed point located between a first ground terminal and a first free terminal of the first radiator, and the first feed source excites the first radiator to resonate in a first target frequency band. The second antenna element includes a second radiator, a second feed source, and an adjustment circuit. The second feed source and the adjustment circuit are respectively connected to a second feed point and a third feed point located between a second free terminal and a second ground terminal of the second radiator. The second radiator and the first radiator are coupled through a gap between the second free terminal and the first free terminal. The second feed source excites the second radiator and / or the first radiator to resonate in a second target frequency band. The adjustment circuit is used to regulate the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the first target frequency band is different from the path of the resonant current corresponding to the second target frequency band. This antenna assembly is not only small in size and occupies little space, but also effectively improves the radiation efficiency of the first and second target frequency bands, thereby improving communication performance. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of an antenna assembly provided in one embodiment of this application.
[0009] Figure 2 yes Figure 1 The curve of the S-parameters of ANT1.
[0010] Figure 3(a) is Figure 1 A schematic diagram of one resonant mode of ANT1 in the image.
[0011] Figure 3(b) is Figure 1 A schematic diagram of another resonance mode of ANT1 in the image.
[0012] Figure 3(c) is Figure 1 A schematic diagram of another resonance mode of ANT1 in the image.
[0013] Figure 4 yes Figure 1 The curve of the S-parameters of ANT2.
[0014] Figure 5(a) is Figure 1 A schematic diagram of one resonant mode of ANT2 in the image.
[0015] Figure 5(b) is Figure 1 A schematic diagram of another resonance mode of ANT2 in the image.
[0016] Figure 5(c) is Figure 1 A schematic diagram of another resonance mode of ANT2 in the image.
[0017] Figure 5(d) is Figure 1A schematic diagram of another resonance mode of ANT2 in the image.
[0018] Figure 5(e) is Figure 1 A schematic diagram of another resonance mode of ANT2 in the image.
[0019] Figure 5(f) is Figure 1 A schematic diagram of another resonance mode of ANT2 in the image.
[0020] Figure 5(g) is Figure 1 A schematic diagram of another resonance mode of ANT2 in the image.
[0021] Figure 5(h) is Figure 1 A schematic diagram of another resonance mode of ANT2 in the image.
[0022] Figure 6 yes Figure 1 The curve of the S-parameters of ANT3.
[0023] Figure 7 This is a schematic diagram of the structure of an antenna assembly provided in another embodiment of this application.
[0024] Figure 8 yes Figure 7 The curve of the S-parameters of ANT1' in the graph.
[0025] Figure 9(a) is Figure 7 A schematic diagram of one resonant mode of ANT1' in the image.
[0026] Figure 9(b) is Figure 7 A schematic diagram of another resonance mode of ANT1' in the image.
[0027] Figure 10 yes Figure 7 The curve of the S-parameters of ANT2'.
[0028] Figure 11(a) is Figure 7 A schematic diagram of one of the resonant modes of ANT2' in the image.
[0029] Figure 11(b) is Figure 7 A schematic diagram of another resonance mode of ANT2' in the image.
[0030] Figure 11(c) is Figure 7 A schematic diagram of another resonance mode of ANT2' in the image.
[0031] Figure 11(d) is Figure 7 A schematic diagram of another resonance mode of ANT2' in the image.
[0032] Figure 11(e) is Figure 7 A schematic diagram of another resonance mode of ANT2' in the image.
[0033] Figure 12 yes Figure 7 The curve of the S-parameters of ANT3'.
[0034] Figure 13 yes Figure 7 Simulation diagrams of the system radiation efficiency and overall system efficiency of the antenna components.
[0035] Figure 14 This is a schematic diagram of the structure of an antenna assembly provided in another embodiment.
[0036] Figure 15 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.
[0037] Figure 16 This is a schematic diagram of the structure of an electronic device provided in another embodiment of this application. Detailed Implementation
[0038] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0039] With the development of electronic technology, electronic devices (such as smartphones and tablets) are becoming increasingly prevalent in people's daily lives, and their communication functions are becoming more and more powerful. For example, electronic devices need to have near-field communication, navigation, and far-field communication capabilities. Different communication functions correspond to different communication frequency bands, and even within the same communication function, multiple communication frequency bands can be subdivided.
[0040] For example, the communication frequency bands for near-field communication (NFC) functions can include Bluetooth, Wi-Fi, and NFC communication bands. Wi-Fi bands can include the 2.4GHz and 5GHz Wi-Fi bands. Navigation functions can include the GPS-L1 and GPS-L5 bands. Far-field communication (FHF) bands include low-frequency (LB), middle-high-frequency (MHB), and ultra-high-frequency (UHB) bands. Specifically, FHF bands can include various bands and combinations of NR and LTE bands to meet the wireless communication needs of electronic devices under 2G, 3G, 4G, 5G, and even 6G broadband. The UHB band can include the N78 and N77 bands.
[0041] Given that electronic devices need to operate across multiple frequency bands, a common approach is to incorporate multiple antennas corresponding to those bands. However, this requires a significant amount of space, hindering the miniaturization and portability of electronic devices. Therefore, there is an urgent need for a technology that allows for the deployment of multiple antennas within a smaller space to achieve various wireless communication functions.
[0042] Related technologies propose using shared antenna assemblies to achieve the functions of multiple antennas. The radiators of a shared antenna can achieve the sharing of various antenna modes, each of which can meet different communication functions. The shared form also reduces the space occupied by the antenna assembly.
[0043] However, how to specifically configure shared antenna components to cover more frequency bands and reduce the space occupied by the antenna components has become an urgent technical problem to be solved.
[0044] As a feasible approach, such as Figure 1 As shown, the antenna assembly 10 can be configured to include a first antenna element 11 and a second antenna element 12. The first antenna element 11 includes a first radiator 111 and a first feed 112. The second antenna element 12 includes a second radiator 121, a second feed 122, and a third feed 123. A gap 13 is formed between the first radiator 111 and the second radiator 121, and the first radiator 111 and the second radiator 121 are coupled through the gap 13 to realize that the first antenna element 11 and the second antenna element 12 are a common-aperture antenna. In other words, the first radiator 111 and the second radiator 121 belong to the same radiator, and the gap 13 on the radiator divides the radiator into the first radiator 111 and the second radiator 121. When the first antenna element 11 or the second antenna element 12, which is formed as a common antenna, is working, it can utilize not only its own radiator but also the radiator on the opposite side. Meanwhile, in conjunction with the different radio frequency signals (also known as feed currents or excitation currents) received or transmitted by the first feed 112, the second feed 122, and the third feed 123, the antenna assembly 10 can realize the transmission of multi-band signals.
[0045] It should be noted that the coupling in the embodiments of this application is "capacitive coupling." "Capacitive coupling" means that an electric field is generated between two radiators, allowing a signal from one radiator to be transmitted to the other through the electric field, and conversely, a signal from the other radiator to be transmitted to one radiator through the electric field. This enables electrical signal conduction even when the two radiators are not in direct contact or directly connected. For example, the coupling of the second radiator 121 to the first radiator 111 through the gap 13 means that the second radiator 121 and the first radiator 111 generate an electric field, allowing a signal from the second radiator 121 to be transmitted to the first radiator 111 through the electric field. This enables electrical signal conduction even when the second radiator 121 and the first radiator 111 are not in direct contact or directly connected. Correspondingly, the first radiator 111 can also generate an electric field with the second radiator 121, and the signal of the first radiator 111 can be transmitted to the second radiator 121 through the electric field, so that the first radiator 111 and the second radiator 121 can conduct electrical signals even if they are not in direct contact or directly connected.
[0046] Specifically, such as Figure 1 As shown, the first radiator 111 has a first ground terminal D, a first free terminal C, and a first feed point E. The first ground terminal D is located at the end of the first radiator 111 furthest from the second radiator 121 and is used to ground GND1. The first free terminal C is located at the end of the first radiator 111 closest to the second radiator 121. The first feed point E is located between the first ground terminal D and the first free terminal C, and the first feed source 112 is connected to the first feed point E. The radio frequency signal received or transmitted by the first feed source 112 can excite the first radiator 111 and / or the second radiator 121 to resonate in the first target frequency band. The first feed source 112 corresponds to the antenna ANT1, which has a resonant mode corresponding to the first target frequency band.
[0047] Optionally, a first matching circuit M1 may be provided between the first feed source 112 and the first feed point E. The first matching circuit M1 is used to perform impedance matching on the excitation signal transmitted by the first feed source 112, so as to excite the first radiator 111 and / or the second radiator to resonate in the first target frequency band, thereby giving the antenna ANT1 corresponding to the first feed source 112 preset S-parameters. At the same time, the first matching circuit M1 is also used to filter the radio frequency signals received or transmitted by the first feed source 112.
[0048] See also Figure 1The second radiator 121 has a second grounding terminal H, a second free terminal I, a second feed point F, and a third feed point G. The second grounding terminal H is located at the end of the second radiator 121 furthest from the first radiator 111 and is connected to ground GND2. The second free terminal I is located at the end of the second radiator 121 closest to the first radiator 111, and there is a gap 13 as described above between the second free terminal I and the first free terminal C. The second feed point F and the third feed point G are located between the second grounding terminal H and the second free terminal I.
[0049] The second feed source 122 is connected to the second feed point F. The radio frequency signal received or transmitted by the second feed source 122 can excite the first radiator 111 and / or the second radiator 121 to resonate in the second target frequency band. The second feed source 122 corresponds to the antenna ANT2, which has a resonant mode corresponding to the second target frequency band.
[0050] Optionally, a second matching circuit M2 may be provided between the second feed source 122 and the second feed point F. The second matching circuit M2 is used to filter the radio frequency signals received or transmitted by the second feed source 122. The second matching circuit M2 is also used to perform impedance matching on the excitation signal transmitted by the second feed source 122, so as to excite the first radiator 111 and / or the second radiator to resonate in the second target frequency band, thereby giving the antenna ANT2 corresponding to the second feed source 122 preset S-parameters.
[0051] The radio frequency signal received or transmitted by the first feed source 112 can excite the first radiator 111 and / or the second radiator 121 to resonate, which may include: the radio frequency signal received or transmitted by the first feed source 112 excites only the first radiator 111 to resonate, and / or the radio frequency signal received or transmitted by the first feed source 112 excites only the second radiator 121 to resonate parasiticly, and / or the radio frequency signal received or transmitted by the first feed source 112 excites both the first radiator 111 to resonate and the second radiator 121 to resonate parasiticly.
[0052] Similarly, the radio frequency signal received or transmitted by the second feed source 122 can excite the first radiator 111 and / or the second radiator 121 to resonate, including: the radio frequency signal received or transmitted by the second feed source 122 only excites the second radiator 121 to resonate, and / or, the radio frequency signal received or transmitted by the second feed source 122 only excites the first radiator 111 to resonate parasiticly, and / or, the radio frequency signal received or transmitted by the second feed source 122 excites the second radiator 121 to resonate and excites the first radiator 111 to resonate parasiticly.
[0053] See also Figure 1The third feed source 123 is connected to the third feed point G. The radio frequency signal received or transmitted by the third feed source 123 can excite the second radiator 121 to resonate in the third target frequency band. The third feed source 123 corresponds to the antenna ANT3, which has a resonant mode corresponding to the third target frequency band.
[0054] Optionally, a third matching circuit M3 may be provided between the third feed source 123 and the third feed point G. The third matching circuit M3 is used to perform impedance matching on the excitation signal transmitted by the third feed source 123, so as to excite the second radiator 121 to resonate in the third target frequency band, thereby giving the antenna ANT3 corresponding to the third feed source 123 preset S-parameters. In addition, the third matching circuit M3 is also used to filter the radio frequency signals received or transmitted by the third feed source 123.
[0055] In some embodiments, such as Figure 1 As shown, the first ground terminal D can be grounded to GND1 through the switching circuit M4. In other words, one end of the switching circuit M4 is connected to the first ground terminal D, and the other end is connected to ground GND1. The switching circuit M4 is used to switch the radiation frequency band of the first radiator 111 and / or to filter and ground the first radiator 111. In some embodiments, the switching circuit M4 can be connected to the motherboard.
[0056] This application does not specifically limit the connection method between the first grounding terminal D and ground GND1 and the second grounding terminal H and ground GND2. For example, the connection method between the grounding terminal D or H and ground includes, but is not limited to, direct electrical connection (such as welding); or indirect electrical connection through coaxial line, microstrip line, radio frequency line, conductive spring, conductive adhesive, insert metal, or the mid-frame connection of electronic device with antenna assembly.
[0057] In another embodiment, the antenna assembly 10 itself has a reference ground, also referred to as a ground electrode or ground. The specific form of this reference ground includes, but is not limited to, a metal conductive plate, a metal conductive layer formed within a flexible circuit board, or a rigid circuit board. When the antenna assembly 10 is disposed within an electronic device, the reference ground of the antenna assembly 10 is electrically connected to the reference ground of the electronic device. In other embodiments, the antenna assembly 10 itself does not have a reference ground, and the first ground terminal D of the antenna assembly 10 is directly electrically connected or indirectly electrically connected to the reference ground of the electronic device or the reference ground of electronic components within the electronic device via a conductive element.
[0058] This application does not specifically limit the coverage of the first target frequency band, the second target frequency band, and the third target frequency band, which can be set as needed. As an example, the first target frequency band, the second target frequency band, and the third target frequency band can be superimposed to cover the communication frequency bands for near-field communication, far-field communication, and navigation functions.
[0059] In some embodiments, the first target frequency band may include a first frequency band, a second frequency band, and a third frequency band. The first frequency band covers the GPS-L1 band, which is a 1.575 GHz band. The second frequency band covers the WIFI 2.4 band, which is a 2.4-2.5 GHz band. The third frequency band covers 3G or 4G communication bands.
[0060] For example, such as Figure 2 As shown, the first frequency band can be represented by point 1, with a frequency of 1.5766 GHz and a radiation efficiency of -8.0811 dB; the second frequency band can be represented by point 2, with a frequency of 2.4667 GHz and a radiation efficiency of -9.9973 dB; and the third frequency band can be represented by point 3, with a frequency of 2.9773 GHz and a radiation efficiency of -15.904 dB.
[0061] Accordingly, antenna ANT1 has a first resonant mode, which includes a first sub-resonant mode, a second sub-resonant mode, and a third sub-resonant mode that respectively support the first frequency band, the second frequency band, and the third frequency band. Specifically, as shown by the dashed line in Figure 3(a), the first sub-resonant mode is a 1 / 4 wavelength mode from the first ground terminal D to the slot 13. As shown by the dashed line in Figure 3(b), the second sub-resonant mode is a 1 / 4 wavelength mode from the first feed point E to the slot 13. As shown by the dashed line in Figure 3(c), the third sub-resonant mode is a unidirectional current mode from the first feed source 112 to the second ground terminal GND2.
[0062] In some embodiments, the second target frequency band may include a fourth, fifth, sixth, and seventh frequency band. The fourth frequency band covers LTE communication bands, including 4G communication and sub-4G broadband bands. The fifth frequency band covers UHB bands, which may include the N78 band, which is a 3.4-3.6 GHz band. The sixth frequency band covers the Wi-Fi 7 communication band, which is a 5.15-7.15 GHz band. The seventh frequency band covers Ultra-Wideband (UWB) communication bands, which are 6G communication and sub-6G broadband bands.
[0063] For example, such as Figure 4 As shown, the fourth frequency band can be accessed via... Figure 4 Points 1 and 2 in the diagram indicate that point 1 has a frequency of 2.3176 GHz and a radiative efficiency of -34.499 dB; point 2 has a frequency of 2.9228 GHz and a radiative efficiency of -0.69303 dB. The fifth frequency band can be accessed via... Figure 4Points 3 and 4 in the diagram indicate that point 3 has a frequency of 3.5317 GHz (i.e., the N78 band) and a radiative efficiency of -8.6082 dB; point 4 has a frequency of 4.4621 GHz and a radiative efficiency of -6.3175 dB. The sixth frequency band can be accessed via... Figure 4 Points 5, 6, and 7 in the diagram indicate that point 5 has a frequency of 5.4542 GHz and a radiated efficiency of -19.557 dB; point 6 has a frequency of 5.9371 GHz and a radiated efficiency of -6.8246 dB; and point 7 has a frequency of 6.9292 GHz and a radiated efficiency of -10.009 dB. The seventh frequency band can be accessed via... Figure 4 The mark 8 indicates that the frequency of mark 8 is 7.9069 GHz and the radiative efficiency is -17.653 dB.
[0064] Accordingly, antenna ANT2 has a second resonant mode, which includes the following resonant modes: Figure 4 The markings 1-8 in the figure correspond to the first sub-resonant mode to the eighth sub-resonant mode, respectively. These first to eighth sub-resonant modes are used to support the frequency bands corresponding to the markings 1-8. As shown by the dashed line in Figure 5(a), the first sub-resonant mode is the ring mode from the third feed 123 to the second feed 122, which can be obtained through the influence of the second matching circuit M2 and the third matching circuit M3. As shown by the dashed line in Figure 5(b), the second sub-resonant mode is the ring mode from the third feed 123 to the second feed 112. As shown by the dashed line in Figure 5(c), the third sub-resonant mode is the 1 / 4 wavelength mode from the second feed 112 to the slot 13. As shown by the dashed line in Figure 5(d), the fourth sub-resonant mode is the mode from the slot 13 to the switch. The 3 / 4 wavelength mode generated by the ground current on the main board of circuit M4; as shown by the dashed line in Figure 5(e), the fifth sub-resonant mode is the 1 / 4 wavelength mode from the second feed 122 to the slot 13; as shown by the dashed line in Figure 5(f), the sixth sub-resonant mode is the ring mode from the second feed 122 to ground GND2; as shown by the dashed line in Figure 5(g), the seventh sub-resonant mode is the 3 / 4 wavelength mode from the slot 13 to the switching circuit M4; as shown by the dashed line in Figure 5(h), the eighth sub-resonant mode is the 5 / 4 wavelength mode from the switching circuit M4 to the slot 13.
[0065] In some embodiments, the third target frequency band may include an LB band. An LB band includes frequency bands less than 1 GHz. For example, as... Figure 6As shown, the LB band can be represented by point 1, which has a frequency of 0.74327 GHz and a radiation efficiency of -10.3748 dB. Correspondingly, antenna ANT3 has a third resonant mode, which is the resonant mode corresponding to the LB band. The third resonant mode is a 1 / 4 wavelength mode from ground GND2 to slot 13, and is used to support the LB band.
[0066] In this embodiment, the lengths of the first radiator 111 and the second radiator 121 are not specifically limited. As one implementation, the length of the first radiator 111 corresponds to 1 / 4 of the medium wavelength of GPS, and the length of the second radiator 121 corresponds to 1 / 8 to 1 / 4 of the wavelength of the LB segment.
[0067] The antenna assembly 10 is characterized by its small size, small footprint, and wide frequency coverage. However, as mentioned earlier, the second sub-resonant mode generated by antenna ANT1 causes the first feed point E on the first radiator 111 to resonate with the slot 13 in the WIFI 2.4 band. The third sub-resonant mode generated by antenna ANT2 also causes the first feed point E on the first radiator 111 to resonate with the slot 13, but the difference is that the first feed point E on the first radiator 111 to resonate with the slot 13 in the UHB band.
[0068] Since the resonant current paths corresponding to the UHB band and the WIFI 2.4 band are the same, shortening the stub length from the first feed point E to slot 13 will improve the radiation efficiency of the UHB band, while sacrificing the radiation efficiency of the WIFI 2.4 band. Conversely, increasing the stub length from the first feed point E to slot 13 will improve the radiation efficiency of the WIFI 2.4 band, while reducing the radiation efficiency of the UHB band. Therefore, Figure 1 Although the antenna component 10 can integrate multiple communication frequency bands, it cannot take into account the radiation efficiency of the first target frequency band and the second target frequency band at the same time, and its communication performance needs to be further improved.
[0069] In view of this, the embodiments of this application are as follows: Figure 1 Based on this, an improved antenna assembly is proposed. This antenna assembly is not only small in size and space-saving, but also includes an adjustment circuit on the second radiator. The adjustment circuit is connected to a third feed point and is used to adjust the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the second target frequency band is different from that of the resonant current corresponding to the first target frequency band. This approach can not only improve the radiation efficiency of the first target frequency band excited by the first feed source and the second target frequency band excited by the second feed source respectively, but also avoid the mutual interference between the radiation efficiency of the first target frequency band and the second target frequency band, thereby improving communication performance.
[0070] The following is combined Figure 7 The antenna assembly 70 in the embodiments of this application will be described in detail. It should be understood that the antenna assembly 70 is... Figure 1 The improvements made to the antenna assembly in the antenna assembly 70, therefore, some structures in the antenna assembly 70 are similar to... Figure 1 The structure of some parts of the antenna assembly 10 is the same. To save space, for parts not described in detail, please refer to the antenna assembly 10 mentioned above.
[0071] See details Figure 7 The antenna assembly 70 is configured to include a first antenna element 71 and a second antenna element 72. The first antenna element 71 includes a first radiator 711 and a first feed 712. The second antenna element 72 includes a second radiator 721 and a second feed 722. A gap 73 is formed between the first radiator 711 and the second radiator 721, and the first radiator 711 and the second radiator 721 are coupled through the gap 73 to realize that the first antenna element 71 and the second antenna element 72 are a common-aperture antenna.
[0072] like Figure 7 As shown, the first radiator 711 also has a first ground terminal D', a first free terminal C', and a first feed point E'. The first feed source 712 is connected to the first feed point E' located between the first ground terminal D' and the first free terminal C'. The radio frequency signal received or transmitted by the first feed source 712 can excite the first radiator 711 to resonate in the first target frequency band. The first feed source 712 corresponds to the antenna ANT1', which has a first resonant mode corresponding to the first target frequency band. Optionally, a first matching circuit M1' may be provided between the first feed source 712 and the first feed point E'.
[0073] The second radiator 721 also has a second ground terminal H', a second free terminal I', a second feed point F', and a third feed point G'. A gap 73 exists between the second free terminal I' and the first free terminal C'. The second feed point F' and the third feed point G' are located between the second ground terminal H' and the second free terminal I'. The second feed source 722 is connected to the second feed point F', and the radio frequency signal received or transmitted by the second feed source 722 can excite the first radiator 711 and / or the second radiator 721 to resonate in the second target frequency band. The second feed source 722 corresponds to the antenna ANT2', which has a second resonant mode corresponding to the second target frequency band. Optionally, a second matching circuit M2' may be provided between the second feed source 722 and the second feed point F'.
[0074] This application does not specifically limit the shape of the first radiator 711 or the second radiator 721. The shape of the first radiator 711 or the second radiator 721 may include, but is not limited to, bent, strip, sheet, rod, coating, or film. When the first radiator 711 or the second radiator 721 is strip-shaped, this application does not limit the extension trajectory of the first radiator 711 or the second radiator 721. For example, the first radiator 711 or the second radiator 721 may extend along a straight line, a curve, or multiple bends. Furthermore, the first radiator 711 or the second radiator 721 may be a line of uniform width along its extension trajectory, or a strip of varying width, such as one with gradually changing width or widened areas.
[0075] As an example, such as Figure 7 As shown, the first radiator 711 can be shaped like a 90-degree zigzag line. The first grounding terminal D' and the first free terminal C are the two ends of the first radiator 711. The second radiator 721 can be shaped like a straight line. The second grounding terminal H' and the second free terminal I' are the two ends of the second radiator 721.
[0076] In the embodiments of this application, the first radiator 711 and / or the second radiator 721 may be formed as a flexible printed circuit (FPC) antenna radiator, a laser direct structural (LDS) antenna radiator, a printed direct structural (PDS) antenna radiator, or a metal frame in any one or more ways.
[0077] By setting the first radiator 711 as a 90-degree folded line and the second radiator 721 as a straight line, it is advantageous to install the antenna assembly 70 at the corner position of the electronic device 20 described later (e.g., the upper left corner of the electronic device 20), so that the antenna assembly 70 has a better radio frequency environment and is not easily blocked by the hand when holding the device, thereby ensuring the performance of wireless communication.
[0078] See also Figure 7 The second antenna unit 72 includes an adjustment circuit M4', which is connected to the third feed point G'. In this embodiment, the adjustment circuit M4' is used to regulate the path length of the resonant current corresponding to the second target frequency band. The path length of the resonant current corresponding to the second target frequency band is different from the path length of the resonant current corresponding to the first target frequency band.
[0079] Specifically, the adjustment circuit M4' is used to adjust the electrical length of the second radiator 721. For example, the adjustment circuit M4' can be used to assist in adjusting the impedance matching of the second feed 722 so that the antenna ANT2' corresponding to the second feed 722 has preset S-parameters. Accordingly, the adjustment circuit M4' can change the second resonant mode generated by the antenna ANT2' corresponding to the second feed 722 according to its own low impedance or high impedance characteristics, so as to control the path length of the resonant current corresponding to the second target frequency band.
[0080] This application does not specifically limit the location of the third feed point G'. The location of the third feed point G' can be set according to the design of the second resonant mode generated by the second radiator 721 or the antenna ANT2' corresponding to the second feed source 722. As an example, Figure 7 As shown, the third feed point G' is located between the second feed point F' and the second grounding terminal H'.
[0081] By setting the adjustment circuit M4', interference from the radio frequency signal of the first target frequency band to the radio frequency signal of the second target frequency band can be reduced. This method not only improves the radiation efficiency of the first target frequency band excited by the first feed and the second target frequency band excited by the second feed respectively, but also avoids the influence between the radiation efficiency of the first target frequency band and the second target frequency band. This avoids the need to balance the radiation efficiency of the first target frequency band and the second target frequency band, further improving the communication performance of the antenna assembly 70.
[0082] Furthermore, since the position of the third feed point G' connecting the adjustment circuit M4' and the second radiator 721 is variable, the actual position of the adjustment circuit M4' can be flexibly adjusted left and right. This is equivalent to the electrical length of the second target frequency band being adjustable, thereby increasing the design flexibility. By adjusting the electrical length of the second target frequency band (e.g., the UHB band) and the impedance characteristics of the adjustment circuit M4', the radiation efficiency of the second target frequency band can be effectively guaranteed.
[0083] It should be understood that the path of the resonant current in the embodiments of this application can be indicated by the resonant mode of the antenna. In the improved antenna assembly 70, different target frequency bands correspond to different resonant modes, and different resonant modes correspond to different resonant current paths. That is to say, compared to Figure 1 The operating modes of antenna components 10 and 70 have also been improved. The following section combines... Figure 8-Figure 1 1. A detailed description of the operating modes of antenna assembly 70 is provided.
[0084] In the embodiments of this application, such as Figure 8As shown, the first target frequency band may include the GPS-L1 band and the WIFI 2.4 band. The GPS-L1 band can be used... Figure 8 Point 1 in the diagram indicates that the WIFI 2.4 band can be accessed via... Figure 8 Point 2 in the diagram represents the frequency of point 1 (1.5074 GHz, radiative efficiency -16.893 dB) and the frequency of point 2 (2.5768 GHz, radiative efficiency -11.115 dB).
[0085] Correspondingly, the antenna ANT1 corresponding to the first feed has a first resonant mode, which is used to support the reception or transmission of the first target frequency band. Specifically, the first resonant mode includes a first sub-resonant mode and a second sub-resonant mode that respectively support the GPS-L1 band and the WIFI 2.4 band. As shown by the dashed line in Figure 9(a), the first sub-resonant mode is a 1 / 4 wavelength mode from the first ground terminal D' to the slot 73. As shown by the dashed line in Figure 9(b), the second sub-resonant mode is a 1 / 4 wavelength mode from the first feed to the slot 73. It should be understood that both the first sub-resonant mode and the second sub-resonant mode can be understood as the quarter-wavelength mode of the inverted-F antenna (IFA antenna).
[0086] It should be noted that, in the embodiments of this application, the antenna ANT1 corresponding to the first feed source can also have other operating modes. For example, in order to achieve high-frequency deconstruction, the antenna ANT1 corresponding to the first feed source needs to introduce a relatively complex bandstop, which will generate clutter in the middle bandpass position. Figure 8 As shown, this clutter can be a peak between marker 1 and marker 2. Since this peak is not the primary operating mode, it will not be described in detail here.
[0087] In some embodiments, the second target frequency band may include a UHB band. The UHB band may include both the N78 band and the N77 band. The N78 band is the 3.4-3.6 GHz band, and the N77 band is the 3.3-4.2 GHz band. For example, the second target frequency band can be... Figure 10 The points 1-2 in the diagram represent the frequency of point 1 (3.4762 GHz, radiative efficiency -10.789 dB) and the frequency of point 2 (4.0769 GHz, radiative efficiency -18.088 dB).
[0088] Correspondingly, the antenna ANT2 corresponding to the second feed has a second resonant mode, which is used to support reception or transmission in the second target frequency band. Specifically, the second resonant mode includes a corresponding third sub-resonant mode and a fourth sub-resonant mode for supporting the UHB frequency band. Specifically, as shown by the dashed line in Figure 11(a), the third sub-resonant mode is the 1 / 4 wavelength mode from the adjustment circuit M4 to the slot 73. As shown by the dashed line in Figure 11(b), the fourth sub-resonant mode is the 3 / 4 wavelength mode from the second ground terminal to the slot 73.
[0089] In some embodiments, the second target frequency band may further include a WIFI-5G frequency band. For example, the WIFI-5G frequency band in the second target frequency band can be... Figure 10 Points 3-5 in the diagram represent the frequency of point 3 (5.0201 GHz, radiative efficiency -30 dB), the frequency of point 4 (6.0617 GHz, radiative efficiency -7.7545 dB), and the frequency of point 5 (6.2888 GHz, radiative efficiency -9.6831 dB).
[0090] Correspondingly, the second resonant mode also includes a fifth sub-resonant mode—the seventh sub-resonant mode—for supporting the WIFI-5G band. Specifically, as shown by the dashed line in Figure 11(c), the fifth sub-resonant mode is a 3 / 4 wavelength mode from the first ground terminal to the slot 73. As shown by the dashed line in Figure 11(d), the sixth sub-resonant mode is a 1 / 4 wavelength mode from the second feed to the slot 73. As shown by the dashed line in Figure 11(e), the seventh sub-resonant mode is a hybrid mode, which is a mixture of the three-quarter wavelength mode from the second ground terminal to the slot and the three-quarter wavelength mode from the first ground terminal to the slot.
[0091] By setting the above resonance modes, one can be determined, compared to Figure 1 The path of the resonant current corresponding to the second target frequency band in antenna assembly 10 and antenna assembly 70 is different from the path of the resonant current corresponding to the first target frequency band.
[0092] Furthermore, the settings of the fifth to seventh sub-resonant modes in the second resonant mode indicate that the second resonant mode in antenna ANT2 of antenna assembly 70 allows the second target frequency band excited by the second feed 722 to cover more frequency points of the WIFI-5G band. In other words, the second resonant mode in antenna ANT2 provides multiple modes of WIFI-5G coverage, thus superimposing the radiation efficiency of the WIFI-5G band. Additionally, multi-mode coverage enables frequency offset adjustability, further improving communication performance in the WIFI-5G band.
[0093] In some embodiments, such as Figure 7As shown, the second antenna unit 72 may further include a third feed source 723. The third feed source 723 is electrically connected to the second radiator 721, and the radio frequency signal received or transmitted by the third feed source 723 can excite the second radiator 721 to resonate in the third target frequency band. Optionally, a third matching circuit M3' may also be provided between the third feed source 723 and the third feed point G'.
[0094] It should be understood that the first matching circuit M1', the second matching circuit M2', and the third matching circuit M3' in the embodiments of this application can have roughly the same function as the first matching circuit M1, the second matching circuit M2, and the third matching circuit M3 described above, and will not be repeated here for the sake of brevity.
[0095] As previously mentioned, the third target frequency band may include the LB band. For example, such as... Figure 12 As shown, the LB band can be represented by point 1, which has a frequency of 0.74227 GHz and a radiation efficiency of -3.3748 dB. Correspondingly, the third feed 723 corresponds to antenna ANT3, which has a third resonant mode. The third resonant mode is a 1 / 4 wavelength mode from ground GND2 to slot 73, and is used to support the resonant mode of the LB band.
[0096] In other embodiments, the third target frequency band may also include the GPS-L5 band, which is a 1.176 GHz band. It should be understood that the GPS-L5 band can also correspond to the third resonant mode of antenna ANT3. The difference is that the realization of the third target frequency band requires matching adjustment via matching circuit M3'.
[0097] By setting a second feed 722 and a third feed 723 in the second antenna element 72, the antennas ANT2 and ANT3 corresponding to the second feed 722 and the third feed 723 can be excited respectively to generate radio frequency signals of different frequency bands. This method requires the addition of an additional decimator to extract the excitation signals corresponding to different frequency bands.
[0098] This application embodiment specifies the particular method of electrical connection between the third feed source 723 and the second radiator 721. As an example, the third feed source 723 can be connected to a fourth feed point on the second radiator 721 (…). Figure 7 (Not shown in the image) connection. As another example, such as... Figure 7 As shown, the third feed source 723 can be electrically connected to the second feed point F', that is, the third feed source 723 can share the second feed point F' with the second feed source 722.
[0099] This application does not specifically limit the connection methods of the first feed source 712 and the first feed point E', the second feed source 722 and the second feed point F', the third feed source 723 and the second feed point F', or the adjustment circuit M4' and the third feed point G'. For example, the connection method can be a direct electrical connection (such as welding), or an indirect electrical connection through coaxial lines, microstrip lines, radio frequency lines, conductive springs, conductive adhesives, etc. Preferably, the connection method can be an electrical connection through conductive springs.
[0100] In this embodiment of the application, by connecting the third feed source 723 and the second feed source 722 together to the same feed point F', the wiring of the antenna assembly 70 can be reduced, making the structure of the antenna assembly 70 smaller, while facilitating matching and stacking with the overall layout antenna, greatly reducing the stacking difficulty of the whole device.
[0101] To verify the operating efficiency of the antenna assembly 70, the embodiments of this application provide simulation diagrams of the system radiation efficiency and the overall system efficiency of the antenna ANT1' corresponding to the first feed source, the antenna ANT2' corresponding to the second feed source 722, and the antenna ANT3' corresponding to the third feed source 723 in the antenna assembly 70.
[0102] like Figure 13 As shown, the frequency of frequency point 1 generated by antenna ANT1' is 1.5172 GHz, with a total system efficiency of -3.1636 dB; the frequency of frequency point 2 is 2.5703 GHz, with a total system efficiency of -3.2774 dB. The frequency of frequency point 3 generated by antenna ANT2' is 3.4914 GHz, with a total system efficiency of -4.2687 dB; the frequency of frequency point 4 is 5.0968 GHz, with a total system efficiency of -2.1574 dB; the frequency of frequency point 5 is 6.1742 GHz, with a total system efficiency of -2.2923 dB. The frequency of frequency point 6 generated by antenna ANT3' is 0.74353 GHz, with a total system efficiency of -9.6181 dB. Therefore, it can be seen that the total system efficiency of the WIFI-2.4 GHz band and GPS-L1 band excited by antenna ANT1' is between -3 dB and -4 dB, indicating relatively high radiation efficiency. The overall system efficiency of the WIFI-5G band excited by antenna ANT2' is between -3dB and -5dB, with relatively high radiation efficiency. Meanwhile, the overall system efficiency of the LB band excited by antenna ANT3' is around -10dB, with relatively high radiation efficiency as well.
[0103] As mentioned earlier, the second target frequency band generated by the second feed source 722 covers more frequencies in the WIFI-5G band. Because the WIFI-5G band has a higher frequency and shorter wavelength, it is highly sensitive to the wiring arrangement between the second feed source 722 and the second feed point F'. Improper wiring will reduce the radiation efficiency of the WIFI-5G band.
[0104] To ensure the radiation efficiency of the WIFI-5G band, the wire between the second feed source 722 and the second feed point F' can be configured such that the first branch of the direction of the feed current from the second feed source 722 to the second feed point F' is the same as the direction of the resonant current from the second feed point F' to the gap 73.
[0105] As an example, such as Figure 14 As shown, the second feed source 722 can be positioned between the second feed point F' and the third feed point G'. Therefore, the conductor J between the second feed source 722 and the second feed point F' can extend from the second feed source 722 in a direction towards the upper left. Consequently, the direction of the feed current from the second feed source 722 to the second feed point F' has a first branch and a second branch. The first branch is parallel to the second radiator 721 and is the same as the direction of the feed current from the second feed point F' to the gap 73. The second branch is perpendicular to the second radiator 721.
[0106] By setting the first branch of the direction of the feed current from the second feed source 722 to the second feed point F' to be the same as the direction of the resonant current from the second feed point F' to the gap 73, the reverse direction during the feed current radiation process can be avoided, thereby ensuring the radiation efficiency of the WIFI-5G band.
[0107] Furthermore, such as Figure 14 As shown, a second matching circuit M2' can also be provided between the second feed source 722 and the second feed point F'. To further ensure that there is no reverse direction during the radiation of the feed current, the second matching circuit M2' is located directly below the second feed source 722. Based on this, the conductor J can include conductor J1 and conductor J2. From Figure 14 As can be seen, the path of the resonant current in the fifth sub-resonant mode of antenna ANT2' mentioned above is as follows: Figure 14 As shown by the dashed line, the path of the resonant current does not include the reverse current.
[0108] This application does not specifically limit the structure of the first matching circuit M1', the second matching circuit M2', the third matching circuit M3', or the adjustment circuit M4'. M1', M2', M3', or M4' may include, but are not limited to, frequency-selective filtering networks such as capacitors, inductors, and resistors connected in series and / or parallel. In some embodiments, M1', M2', M3', or M4' may include branches formed by multiple capacitors, inductors, and resistors connected in series and / or parallel, and switches controlling the on / off states of these branches. By controlling the on / off states of different switches, the frequency selection parameters (such as resistance, inductance, and capacitance values) of the matching circuit or adjustment circuit can be adjusted, thereby adjusting the filtering range of the matching circuit and thus enabling the matching circuit or adjustment circuit to adjust the corresponding radio frequency signal. Different matching circuits or adjustment circuits may differ, and their specific circuit implementation is not intended to limit the scope of protection of this application.
[0109] Both the matching circuit and the adjustment circuit are used to perform impedance matching on the radiators electrically connected to them, so that the impedance of the radiators is matched with the frequency at which they resonate, thereby achieving a higher transmit and receive power for the radiators. By setting the matching circuit or adjustment circuit and adjusting the parameters of the frequency modulation circuit, the resonant frequency of each antenna can be shifted along low or high frequencies, realizing ultra-wideband for the antenna assembly 70 and increasing the coverage and communication quality of the antenna signal of the antenna assembly 70. For example, the first matching circuit is used to perform impedance matching on the excitation signal transmitted by the first feed source to excite the first radiator to resonate in the first target frequency band; the second matching circuit is used to perform impedance matching on the excitation signal transmitted by the second feed source to excite the second radiator and / or the first radiator to resonate in the second target frequency band; and the third matching circuit is used to perform impedance matching on the excitation signal transmitted by the third feed source to excite the second radiator to resonate in the third target frequency band.
[0110] This application embodiment also provides an electronic device 20, in which an antenna assembly 70 can be applied, that is, the electronic device 20 includes any of the antenna assemblies 70 described above.
[0111] This application does not specifically limit the type of electronic device 20, as long as the electronic device 150 needs to realize wireless communication function through antenna assembly. Electronic devices may include, for example, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistant (PDA) devices, handheld devices with wireless communication function, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, learning machines, electronic dictionaries, and smartwatches, etc.
[0112] Taking mobile phones as an example of electronic devices, Figure 15 and Figure 16 This is a schematic diagram showing the layout of the antenna assembly 70 in an electronic device according to an embodiment of this application. It should be understood that... Figure 15 and Figure 16 This is merely an illustration; the electronic device 20 may include multiple antenna assemblies 70, and the antenna assemblies 70 may be installed at any location on the electronic device 20.
[0113] Preferably, such as Figure 15 and Figure 16 As shown, the first antenna unit 710 is located at the upper corner of the electronic device 20, and the second antenna unit 720 in the antenna assembly 70 is located at the top of the electronic device 20, so as to avoid the user from blocking the signal of the antenna assembly 70 when holding the electronic device 20.
[0114] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any other combination. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a machine-readable storage medium or transmitted from one machine-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The machine-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid-state drives (SSDs)).
[0115] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments of this disclosure can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.
[0116] In the several embodiments provided in this disclosure, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.
[0117] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0118] In addition, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
[0119] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. An antenna assembly, characterized in that, include: The first antenna element includes a first radiator and a first feed source. The first radiator has a first ground terminal, a first free terminal and a first feed point. The first feed point is located between the first ground terminal and the first free terminal. The first feed source is connected to the first feed point. The first feed source excites the first radiator to resonate in the first target frequency band. The second antenna element includes a second radiator, a second feed source, and an adjustment circuit. The second radiator has a second ground terminal and a second free terminal. The second free terminal and the first free terminal are spaced apart to form a gap. The second radiator and the first radiator are coupled through the gap. The second radiator further comprises a second feed point and a third feed point, located between the second free end and the second ground end. The second feed source is connected to the second feed point, and the adjustment circuit is connected to the third feed point. The second feed source excites the second radiator and / or the first radiator to resonate at a second target frequency band. The adjustment circuit is used to regulate the path length of the resonant current corresponding to the second target frequency band. The path of the resonant current corresponding to the first target frequency band is different from the path of the resonant current corresponding to the second target frequency band. The first target frequency band includes the GPS-L1 band and the WIFI-2.4 band, and the second target frequency band includes the UHB band. The antenna corresponding to the second feed has a second resonant mode, which includes a fifth sub-resonant mode, a sixth sub-resonant mode, and a seventh sub-resonant mode. The fifth sub-resonant mode is a three-quarter wavelength mode from the first ground terminal to the slot. The sixth sub-resonant mode is a quarter wavelength mode from the second feed terminal to the slot. The seventh sub-resonant mode is a hybrid mode of the three-quarter wavelength mode from the second ground terminal to the slot and the three-quarter wavelength mode from the first ground terminal to the slot. The fifth, sixth, and seventh sub-resonant modes are all used to support the WIFI-5G band in the second target frequency band. The second antenna unit further includes a third feed source, which is connected to the second feed point and excites the second radiator to resonate in a third target frequency band, which includes the GPS-L5 band or the low-frequency LB band.
2. The antenna assembly according to claim 1, characterized in that, The third feed point is located between the second feed point and the second grounding terminal.
3. The antenna assembly according to claim 1, characterized in that, The first antenna unit further includes a first matching circuit, which is connected to the first feed point and the first feed source respectively. The first matching circuit is used to perform impedance matching on the excitation signal transmitted by the first feed source so as to excite the first radiator to resonate in the first target frequency band. The second antenna unit further includes a second matching circuit, which is connected to the second feed point and the second feed source respectively. The second matching circuit is used to perform impedance matching on the excitation signal transmitted by the second feed source so as to excite the second radiator and / or the first radiator to resonate in the second target frequency band. The second antenna unit further includes a third matching circuit, which is connected to the second feed point and the third feed source respectively. The third matching circuit is used to perform impedance matching on the excitation signal transmitted by the third feed source so as to excite the second radiator to resonate in the third target frequency band.
4. The antenna assembly according to claim 1, characterized in that, The antenna corresponding to the first feed has a first resonant mode, which includes a first sub-resonant mode and a second sub-resonant mode. The first sub-resonant mode is a quarter-wavelength mode from the first ground terminal to the slot, and the second sub-resonant mode is a quarter-wavelength mode from the first feed to the slot. The first sub-resonant mode is used to support the GPS-L1 band in the first target frequency band, and the second sub-resonant mode is used to support the WIFI-2.4G band in the first target frequency band.
5. The antenna assembly according to claim 1, characterized in that, The second resonant mode further includes a third sub-resonant mode and a fourth sub-resonant mode. The third sub-resonant mode is a quarter-wavelength mode from the adjustment circuit to the gap, and the fourth sub-resonant mode is a three-quarter-wavelength mode from the second ground terminal to the gap. The third and fourth sub-resonant modes are used to support the UHB band in the second target frequency band.
6. The antenna assembly according to claim 1, characterized in that, The antenna corresponding to the third feed has a third resonant mode, which is used to support the third target frequency band. The third resonant mode includes a quarter-wavelength mode from the second ground terminal to the slot.
7. The antenna assembly according to claim 1, characterized in that, The wire between the second feed source and the second feed point is configured such that the first branch of the direction of the feed current from the second feed source to the second feed point is the same as the direction of the resonant current from the second feed point to the gap.
8. An electronic device, characterized in that, Includes the antenna assembly as described in any one of claims 1 to 7.
9. The electronic device according to claim 8, wherein, The first antenna element in the antenna assembly is located at the upper corner of the electronic device, and the second antenna element in the antenna assembly is located at the top of the electronic device.