Antenna assembly and electronic device

Abstract

This application provides an antenna assembly and electronic device, belonging to the field of antenna technology. The antenna assembly includes: a first radiating stub, a second radiating stub, a third radiating stub, a first circuit structure, and at least one parasitic circuit structure; the first, second, and third radiating stubs are arranged head-to-head sequentially; one end of the first circuit structure is electrically connected to the end of the first radiating stub facing the second radiating stub, and the other end is electrically connected to the end of the second radiating stub facing the first radiating stub; at least one parasitic circuit structure is electrically connected to the third radiating stub, and the at least one parasitic circuit structure is used to switch at least a portion of the third radiating stub to a parasitic stub of the first and / or second radiating stub. The antenna assembly of this application can meet the radiation requirements of lower frequency bands, can switch the third radiating stub to a parasitic stub, and improve the radiation efficiency of the antenna assembly.

Description

Technical Field

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

[0002] Currently, mobile phones, tablets, and other electronic devices have become indispensable tools in people's daily lives. These electronic devices typically require communication antennas to enable wireless communication.

[0003] In related technologies, electronic devices often require antenna components to cover multiple frequency bands. The length design of the radiating branches in the antenna components usually needs to take into account the wavelengths of multiple different frequency bands. This makes it impossible for the antenna components to achieve optimal radiation efficiency for each frequency band, and the electronic devices cannot obtain optimal communication performance. Summary of the Invention

[0004] This application provides an antenna assembly and electronic device that can solve the problem that the length design of the radiating stubs in the antenna assembly needs to take into account the wavelengths of multiple different frequency bands, so that the radiation efficiency of the antenna assembly for each frequency band cannot reach the optimal level.

[0005] The technical solution is as follows:

[0006] On one hand, an antenna assembly is provided, the antenna assembly comprising: a first radiating stub, a second radiating stub, a third radiating stub, a first circuit structure, and at least one parasitic circuit structure;

[0007] The first radial branch, the second radial branch, and the third radial branch are arranged head-to-head in sequence;

[0008] One end of the first circuit structure is electrically connected to the end of the first radiating branch facing the second radiating branch, and the other end is electrically connected to the end of the second radiating branch facing the first radiating branch.

[0009] The at least one parasitic circuit structure is electrically connected to the third radiating branch, and the at least one parasitic circuit structure is used to switch at least a portion of the third radiating branch to a parasitic branch of the first radiating branch and / or the second radiating branch.

[0010] In some embodiments, the first circuit structure includes a first switching element and at least one first capacitor element, wherein the first switching element and the at least one first capacitor element are connected in series.

[0011] In some embodiments, when the antenna assembly operates in the first frequency band, the first switching element is disconnected, and the first radiating stub and the second radiating stub are not connected;

[0012] When the antenna assembly operates in the second frequency band, the first switching element is closed, and the first radiating stub and the second radiating stub are electrically connected through the at least one first capacitor element;

[0013] The center frequency of the first frequency band is greater than the center frequency of the second frequency band.

[0014] In some embodiments, the number of the first capacitor elements is at least two; the first switching element includes a first connection terminal and at least two second connection terminals;

[0015] Each of the first capacitor elements is connected in series with a second connection terminal, and the first connection terminal is capable of conducting with at least one of the second connection terminals, such that at least two of the first capacitor elements are electrically connected between the first radiating stub and the second radiating stub.

[0016] In some embodiments, at least two of the first capacitor elements may have the same or different capacitance values;

[0017] And / or,

[0018] The capacitance value of the first capacitor element ranges from 0.3 to 2 pF.

[0019] In some embodiments, the first connection terminal is electrically connected to the second radiating branch; the number of the second connection terminals is at least three.

[0020] The first circuit structure further includes at least one first capacitive sensing element;

[0021] At least three of the second connection terminals are electrically connected to one end of the at least one first capacitor element and one end of the at least one first capacitive element, respectively, and the other end of the at least one first capacitive element is grounded.

[0022] In some embodiments, the third radial branch is provided with at least one first upper frame point, and the at least one first upper frame point is located between the two ends of the third radial branch;

[0023] The at least one parasitic circuit structure is electrically connected to the at least one first upper frame point, and the parasitic circuit structure is used to switch the portion of the third radial branch between the corresponding first upper frame point and the second radial branch to a parasitic branch of the first radial branch and / or the second radial branch.

[0024] In some embodiments, the number of parasitic circuit structures is at least two, and the number of the first upper frame points is at least two;

[0025] Each of the parasitic circuit structures is electrically connected to one of the first upper frame points;

[0026] Different parasitic circuit structures are used to switch different portions of the third radiating stub between the corresponding first upper frame point and the second radiating stub to parasitic stubs of the first radiating stub and / or the second radiating stub when the antenna assembly is operating in different frequency bands.

[0027] In some embodiments, the antenna assembly further includes a second circuit structure and a first feed source;

[0028] One end of the second circuit structure is electrically connected to one of the first upper frame points, and the other end is electrically connected to the first feed source;

[0029] When the first upper frame point connects both the parasitic circuit structure and the second circuit structure, the parasitic circuit structure and the second circuit structure are arranged in parallel, or the parasitic circuit structure serves as a branch of the second circuit structure.

[0030] In some embodiments, a first break is provided between the first radiating branch and the second radiating branch, and the end of the first radiating branch facing away from the first break is grounded; a second break is provided between the second radiating branch and the third radiating branch, and the end of the third radiating branch facing away from the second break is grounded.

[0031] In some embodiments, the second radial branch has a second upper frame point near the end of the second fracture.

[0032] The antenna assembly further includes a third circuit structure and a second feed source; one end of the third circuit structure is electrically connected to the second upper frame point, and the other end is electrically connected to the second feed source.

[0033] In some embodiments, the length of the first radiating branch is L1, the length of the second radiating branch is L2, and the length of the third radiating branch is L3;

[0034] Where L1+L2≥20mm, and / or, L3>L2>L1.

[0035] In some embodiments, when the antenna assembly includes a first feed and a second feed, the first feed corresponds to the LB band, and the second feed corresponds to at least one of the MHB band, N78, and N79.

[0036] On the other hand, an electronic device is provided, which includes the antenna assembly described in this application.

[0037] The beneficial effects of the technical solution provided in this application include at least the following:

[0038] The antenna assembly of this application comprises a first radiating stub, a second radiating stub, and a third radiating stub arranged head-to-head in sequence. The antenna assembly can independently transmit and receive electromagnetic signals using each of the three radiating stubs, meeting the length requirements of different frequency bands. Furthermore, each radiating stub can be specifically configured according to the wavelength of the target frequency band, thereby enhancing the radiation efficiency of the antenna assembly when operating in the target frequency band. The first and second radiating stubs are electrically connected through a first circuit structure, which couples the first and second radiating stubs together, resulting in a larger radiation length. This meets the radiation requirements of lower frequency bands, improving the radiation performance of the antenna assembly for lower frequency bands. Thus, the antenna assembly can achieve performance across different frequency bands. In addition, the third radiating stub, in conjunction with a parasitic circuit structure, can be partially switched to a parasitic stub when the first and / or second radiating stubs are operating, further enhancing the radiation efficiency of the antenna assembly. This helps ensure that the antenna assembly achieves optimal radiation efficiency in different frequency bands, improving the communication performance of electronic devices. Attached Figure Description

[0039] 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 accompanying 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.

[0040] Figure 1 This is a schematic diagram of the antenna assembly provided in an embodiment of this application;

[0041] Figure 2 This is a partial structural schematic diagram of an antenna assembly provided in another embodiment of this application;

[0042] Figure 3 This is a schematic diagram of the structure of an antenna assembly provided in another embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the structure of an antenna assembly provided in another embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the structure of an antenna assembly provided in another embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the current distribution of the antenna assembly in the first operating state provided in the embodiments of this application;

[0046] Figure 7 This is a schematic diagram of the current distribution of the antenna assembly in the second operating state provided in the embodiments of this application;

[0047] Figure 8 This is a schematic diagram of the current distribution of the antenna assembly in the third operating state provided in the embodiments of this application;

[0048] Figure 9 This is a schematic diagram of the current distribution of the antenna assembly in the fourth operating state provided in the embodiments of this application;

[0049] Figure 10 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0050] The reference numerals in the figure are respectively:

[0051] 1. First radiating branch;

[0052] 101. First end; 102. Second end;

[0053] 2. Second radiating branch;

[0054] 201. Third end; 202. Fourth end;

[0055] 21. Second top frame point;

[0056] 3. Third radiating branch;

[0057] 301, Fifth end; 302, Sixth end;

[0058] 31. First top frame point;

[0059] 4. First circuit structure;

[0060] 41. First switching element; 411. First connecting terminal; 412. Second connecting terminal; 42. First capacitor element; 43. First capacitive inductor element;

[0061] 5. Parasitic circuit structure;

[0062] 51. Second switching element; 52. Second capacitive sensing element;

[0063] 6. Second circuit structure;

[0064] 7. First feed source;

[0065] 8. First fracture;

[0066] 9. Second fracture;

[0067] 10. Third circuit structure;

[0068] 1001, Second capacitor element; 1002, First inductor element;

[0069] 11. Second feed source;

[0070] 001. Frame section; 002. Middle plate section; 003. Floating channel. Detailed Implementation

[0071] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0072] In the description of this application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0073] It should be understood that in this application, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Communication connection" can refer to the transmission of electrical signals, including wireless communication connections and wired communication connections. Wireless communication connections do not require a physical medium and are not a connection relationship that limits the product structure. "Connection" and "connected" can both refer to a mechanical or physical connection relationship, that is, A and B being connected or connected can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0074] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0075] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0076] On the one hand, combined with Figure 1As shown, this embodiment provides an antenna assembly, which includes: a first radiating stub 1, a second radiating stub 2, a third radiating stub 3, a first circuit structure 4, and at least one parasitic circuit structure 5.

[0077] The first radiating branch 1, the second radiating branch 2, and the third radiating branch 3 are arranged head-to-head in sequence; one end of the first circuit structure 4 is electrically connected to the end of the first radiating branch 1 facing the second radiating branch 2, and the other end is electrically connected to the end of the second radiating branch 2 facing the first radiating branch 1.

[0078] At least one parasitic circuit structure 5 is electrically connected to the third radiating branch 3, and the at least one parasitic circuit structure 5 is used to switch at least a portion of the third radiating branch 3 to a parasitic branch of the first radiating branch 1 and / or the second radiating branch 2.

[0079] In this embodiment, the antenna assembly has a first radiating stub 1, a second radiating stub 2, and a third radiating stub 3 arranged head-to-head in sequence. The antenna assembly can use the three radiating stubs to transmit and receive electromagnetic signals independently, meeting the length requirements of different frequency bands. Furthermore, each radiating stub can be specifically configured according to the wavelength of the target frequency band, thereby enhancing the radiation efficiency of the antenna assembly when operating in the target frequency band.

[0080] The first radiating stub 1 and the second radiating stub 2 are electrically connected through the first circuit structure 4. The first circuit structure 4 can be used to couple the first radiating stub 1 and the second radiating stub 2 together, thereby obtaining a larger radiation length, which can meet the radiation requirements of lower frequency bands and improve the radiation performance of the antenna assembly for lower frequency bands. Thus, the antenna assembly can achieve a balance of performance across different frequency bands.

[0081] Furthermore, the third radiating stub 3, in conjunction with the parasitic circuit structure 5, can switch a portion of the third radiating stub 3 into a parasitic stub when the first radiating stub 1 and / or the second radiating stub 2 are working, thereby further improving the radiation efficiency of the antenna assembly. This helps ensure that the antenna assembly can achieve optimal radiation efficiency in different frequency bands and improve the communication performance of electronic devices.

[0082] For example, the number of parasitic circuit structures 5 may be one, two, three, etc. Different parasitic circuit structures 5 may be electrically connected at different locations of the third radiating branch 3, and different parts of the third radiating branch 3 may be switched to parasitic branches of the first radiating branch 1 and / or the second radiating branch 2.

[0083] Among some possible implementations, refer to Figure 1As shown, the first radial branch 1, the second radial branch 2, and the third radial branch 3 are arranged head-to-head in sequence, meaning that the extension directions of the first radial branch 1, the second radial branch 2, and the third radial branch 3 coincide, with the second radial branch 2 located in the middle, and the first radial branch 1 and the third radial branch 3 located at opposite ends of the second radial branch 2, with one end of the first radial branch 1 and one end of the third radial branch 3 being spaced apart from the two ends of the second radial branch 2.

[0084] For example, refer to Figure 1 As shown, the first radial branch 1 has a first end 101 and a second end 102, the second radial branch 2 has a third end 201 and a fourth end 202, and the third radial branch 3 has a fifth end 301 and a sixth end 302. When the first radial branch 1, the second radial branch 2, and the third radial branch 3 are arranged head-to-head in sequence, the first end 101 and the third end 201 are spaced apart and opposite each other, the second end 102 is located on the side of the first end 101 that is away from the third end 201, the fourth end 202 and the fifth end 301 are spaced apart and opposite each other, and the sixth end 302 is located on the side of the fifth end 301 that is away from the fourth end 202.

[0085] Combination Figure 1 As shown, in some embodiments, the first circuit structure 4 includes a first switching element 41 and at least one first capacitor element 42, which are connected in series.

[0086] The two radiators are electrically connected through the first circuit structure 4. The first switching element 41 in the first circuit structure 4 can be used to couple the first radiator and the second radiator together through at least one first capacitor element 42, thereby obtaining a larger radiation length, which can meet the radiation requirements of the lower frequency band and improve the radiation performance of the antenna assembly for the lower frequency band.

[0087] In some possible implementations, the number of first capacitor elements 42 can be one, two, or three. When the number of first capacitor elements 42 is two or more, the capacitance values ​​of the different second capacitor elements 1001 are different, so that the first radiator and the second radiator can have different coupling characteristics, which can meet the radiation requirements of different frequency bands.

[0088] In some embodiments, when the antenna assembly operates in the first frequency band, the first switching element 41 is open, and the first radiating stub 1 and the second radiating stub 2 are not connected; when the antenna assembly operates in the second frequency band, the first switching element 41 is closed, and the first radiating stub 1 and the second radiating stub 2 are electrically connected through at least one first capacitor element 42; wherein, the center frequency of the first frequency band is greater than the center frequency of the second frequency band.

[0089] With the above arrangement, the antenna assembly of this embodiment can operate in a first frequency band with a smaller wavelength when the first switching element 41 is open, and in a second frequency band with a larger wavelength when the first switching element 41 is closed, thus achieving a balance between higher and lower frequency bands.

[0090] In some possible implementations, when the first switching element 41 is open, the first radiator and the second radiator form a parasitic antenna; when the first switching element 41 is closed, the first radiator and the second radiator form a metamaterial antenna.

[0091] In some possible implementations, when the first radiator and the second radiator form a parasitic antenna, the first radiator acts as an active antenna element, and the second radiator acts as a parasitic antenna element. The active antenna element is responsible for receiving or transmitting signals and generating an excitation electromagnetic field. Based on electromagnetic induction and coupling effects, when the active antenna element is fed and excited to generate an electromagnetic field, the parasitic antenna element is situated within that field. Current is generated in the parasitic antenna element through inductive coupling, thereby radiating electromagnetic waves. Utilizing the radiation effect of the parasitic antenna element can improve the radiation performance of the active antenna element, making it suitable for space-constrained devices or applications, such as smartphones.

[0092] For example, the second radiator is electrically connected to the first radiator using the first circuit structure 4, so that it serves as a parasitic antenna element of the first radiator. This method has a simple structure, and the second radiator also has a simple structure and low cost, which is beneficial for improving the production and application of antenna components.

[0093] In some other possible implementations, when the first radiator and the second radiator form a metamaterial antenna, the first radiator forms a conventional antenna element, and the first circuit structure 4 and the second radiator form a metamaterial antenna element. The metamaterial antenna element can positively influence the performance of the conventional antenna element, such as effectively focusing and controlling the propagation direction of electromagnetic waves, thereby improving the gain of the antenna assembly, enhancing the signal transmission distance and coverage. Furthermore, by rationally designing the structural parameters of the metamaterial antenna element, a wider operating bandwidth can be achieved, improving the adaptability and compatibility of the antenna assembly to different frequency signals, reducing the need for multiple antennas due to frequency band switching, and reducing the complexity and cost of the system.

[0094] Combination Figure 2 As shown, in some embodiments, the number of first capacitor elements 42 is at least two; the first switching element 41 includes a first connection terminal 411 and at least two second connection terminals 412.

[0095] Each first capacitor element 42 is connected in series with a second connection terminal 412. The first connection terminal 411 is able to conduct with at least one second connection terminal 412, such that at least two first capacitor elements 42 are electrically connected between the first radiating branch 1 and the second radiating branch 2, respectively.

[0096] With the above arrangement, the number of first capacitor elements 42 is at least two, and different first capacitor elements 42 can be connected between the first radiating stub 1 and the second radiating stub 2 by using the first connecting terminal 411 and the second connecting terminal 412, so that the metamaterial antenna formed by the first radiating stub 1 and the second radiating stub 2 in series has more working states and can meet the radiation requirements of different frequency bands.

[0097] For example, the first switching element 41 is an SPnT switching element, or it can be an nSPST switching element.

[0098] In some embodiments, at least two first capacitor elements 42 have the same or different capacitance values, so that the first circuit structure 4 has more current states, which can provide more current modes for the antenna assembly and meet the usage requirements of different frequency bands.

[0099] In some embodiments, the capacitance value of the first capacitor element 42 ranges from 0.3 to 2 pF. When the capacitance value of the first capacitor element 42 meets the above-mentioned range, the first radiating stub 1 and the second radiating stub 2 can achieve a better coupling connection.

[0100] In some possible implementations, the capacitance value of the first capacitor element 42 is, for example, 0.3pF, 0.4pF, 0.5pF, 0.6pF, 0.7pF, 0.8pF, 0.9pF, 1.0pF, 1.2pF, 1.4pF, 1.6pF, 1.8pF, 2.0pF, etc.

[0101] Combination Figure 2 As shown, in some embodiments, the first connection terminal 411 is electrically connected to the first radiating branch 1; the number of second connection terminals 412 is at least three; and the first circuit structure 4 further includes at least one first capacitive element 43.

[0102] At least three second connection terminals 412 are electrically connected to one end of at least one first capacitor element 42 and one end of at least one first capacitive element 43, respectively, and the other end of at least one first capacitive element 43 is grounded.

[0103] With the above arrangement, the first switching element 41 can not only control the first radiating stub 1 and the second radiating stub 2 to be electrically connected through the first capacitor element 42, but also control the second radiating stub 2 to be grounded through the first capacitive inductor element 43. Thus, when the antenna assembly uses the second radiating stub 2 to participate in the operation, it can use the first capacitive inductor element 43 to expand more current modes, thereby increasing the resonant modes of the antenna assembly, and further expanding the operating bandwidth of the antenna assembly and improving the working performance of the antenna assembly.

[0104] In some possible implementations, the first capacitive-inductive element 43 can be either a capacitor or an inductor. When the first capacitive-inductive element 43 includes multiple capacitors, the capacitance values ​​of the different capacitors can be the same or different. When the first capacitive-inductive element 43 includes multiple inductors, the inductance values ​​of the different inductors can be the same or different.

[0105] Combination Figure 3 As shown, in some embodiments, the parasitic circuit structure 5 includes a second switching element 51, one end of which is electrically connected to the third radiating branch 3 and the other end is grounded, so that when the second switching element 51 is closed, a portion of the structure of the third radiating branch 3 can be controlled to form a parasitic branch of the first radiating branch 1 and / or the second radiating branch 2.

[0106] Combination Figure 3 As shown, in some embodiments, the parasitic circuit structure 5 further includes at least one second capacitive element 52, and the second switching element 51 is a multi-channel single-pole single-throw switch. One end of the second switching element 51 is electrically connected in parallel to the third radiating stub 3, and the other end is directly grounded, and / or grounded through a second capacitive element 52. Thus, the parasitic circuit structure 5 can use the second switching element 51 to switch the parasitic state of the third radiating stub 3, increase the resonant state of the antenna assembly, and improve the working performance of the antenna assembly.

[0107] In some possible implementations, the second capacitive-inductive element 52 can be either a capacitor or an inductor. When the second capacitive-inductive element 52 includes multiple capacitors, the capacitance values ​​of the different capacitors can be the same or different. When the second capacitive-inductive element 52 includes multiple inductors, the inductance values ​​of the different inductors can be the same or different.

[0108] Combination Figure 1 As shown, in some embodiments, the third radiating branch 3 is provided with at least one first upper frame point 31, and the at least one first upper frame point 31 is located between the two ends of the third radiating branch 3.

[0109] At least one parasitic circuit structure 5 is electrically connected to at least one first upper frame point 31. The parasitic circuit structure 5 is used to switch a portion of the third radiating branch 3 between the corresponding first upper frame point 31 and the second radiating branch 2 into a parasitic branch of the first radiating branch 1 and / or the second radiating branch 2.

[0110] With the above arrangement, a portion of the third radiating branch 3 can be switched to a parasitic branch using parasitic circuits. For example, when the second radiating branch 2 is used as the main radiating branch, both the first radiating branch 1 and the third radiating branch 3 can be used as parasitic branches of the second radiating branch 2, thereby greatly improving the radiation performance of the second radiating branch 2.

[0111] Combination Figure 3 As shown, in some embodiments, the number of parasitic circuit structures 5 is at least two, and the number of first upper frame points 31 is at least two; each parasitic circuit structure 5 is electrically connected to a first upper frame point 31.

[0112] Different parasitic circuit structures 5 are used to switch the different parts of the third radiating branch 3 between the corresponding first upper frame point 31 and the second radiating branch 2 into parasitic branches of the first radiating branch 1 and / or the second radiating branch 2 when the antenna assembly is operating in different frequency bands.

[0113] With the above arrangement, at least two parasitic circuit structures 5 and at least two first upper frame points 31 are arranged on the third radiating stub 3, so that the third radiating stub 3 can provide at least two parasitic modes, and can provide different parasitic modes for the first radiating stub 1 and / or the second radiating stub 2 for different frequency bands, so that the antenna assembly has optimal radiation performance when operating in different frequency bands.

[0114] Combination Figure 4 As shown, in some embodiments, the antenna assembly further includes a second circuit structure 6 and a first feed 7; one end of the second circuit structure 6 is electrically connected to one of the first upper frame points 31, and the other end is electrically connected to the first feed 7.

[0115] When the first upper frame point 31 is connected to both the parasitic circuit structure 5 and the second circuit structure 6, the parasitic circuit structure 5 and the second circuit structure 6 are arranged in parallel, or the parasitic circuit structure 5 is used as a branch of the second circuit structure 6.

[0116] With the above arrangement, the third radiating stub 3 can be electrically connected to the second circuit structure 6 and the first feed source 7 to achieve power supply for the third radiating stub 3. In addition, the parasitic circuit structure 5 and the second circuit structure 6 can be integrated into a single design. The integrated circuit can not only serve as a feed circuit for impedance matching of the third radiating stub 3, but also realize parasitic switching of the third radiating stub 3, which is beneficial to improving the utilization rate of electronic components and reducing the cost of antenna components.

[0117] In some possible implementations, the third radiating branch 3 has two first upper frame points 31, one of which is close to the fifth end 301 of the third radiating branch 3 toward the second radiating branch 2 for electrically connecting a parasitic circuit structure 5, and the other first upper frame point 31 is located between the two ends of the third radiating branch 3 (e.g., at the midpoint) for electrically connecting another parasitic circuit structure 5 or a second circuit structure 6.

[0118] The first circuit structure 4 is electrically connected to the third end 201 of the second radiating branch 2 near the first radiating branch 1, and the third circuit structure 10 is electrically connected to the fourth end 202 of the second radiating branch 2 near the third radiating branch 3.

[0119] Combination Figure 1 As shown, in some embodiments, a first break 8 is provided between the first radiating branch 1 and the second radiating branch 2, and the end of the first radiating branch 1 facing away from the first break 8 is grounded. A second break 9 is provided between the second radiating branch 2 and the third radiating branch 3, and the end of the third radiating branch 3 facing away from the second break 9 is grounded.

[0120] The first radiating stub 1, the second radiating stub 2, and the third radiating stub 3 are arranged head-to-head in sequence through the first gap 8 between the first radiating stub 1 and the second radiating stub 2, and the second radiating stub 2 and the third radiating stub 3, and the antenna assembly can be grounded using the outermost ends of the first radiating stub 1 and the third radiating stub 3.

[0121] Combination Figure 5 As shown, in some embodiments, the second radiating branch 2 is provided with a second upper frame point 21 at the end near the second slit 9; the antenna assembly also includes a third circuit structure 10 and a second feed source 11; one end of the third circuit structure 10 is electrically connected to the second upper frame point 21, and the other end is electrically connected to the second feed source 11.

[0122] With the above arrangement, the second radiating branch 2 can be electrically connected to the third circuit structure 10 and the second feed source 11 to realize the power supply of the second radiating branch 2.

[0123] Among some possible implementations, refer to Figure 5 As shown, the first circuit structure 4 is electrically connected to the third end 201 of the second radiating branch 2 toward the first radiating branch 1, and the third circuit structure 10 is electrically connected to the fourth end 202 of the second radiating branch 2 toward the third radiating branch 3. That is, the second upper frame point 21 is located at the fourth end 202 of the second radiating branch 2.

[0124] For example, refer to Figure 5As shown, the third circuit structure 10 includes a second capacitor element 1001 and a first inductor element 1002. One end of the second capacitor element 1001 is electrically connected to the second upper frame point 21, and the other end of the second capacitor element 1001 is electrically connected to the second feed source 11 and one end of the first inductor element 1002. The other end of the first inductor element 1002 is grounded.

[0125] Combination Figure 1 As shown, in some embodiments, the length of the first radiating branch 1 is L1, the length of the second radiating branch 2 is L2, and the length of the third radiating branch 3 is L3; wherein, L1+L2≥20mm, and / or, L3>L2>L1.

[0126] When the sum of the length L1 of the first radiator and the length L2 of the second radiator meets the above range, the first radiating branch 1 and the second radiating branch 2, after being connected in series using the first circuit structure 4, have sufficient radiating length and better radiating performance when operating in both low-frequency and mid-to-high-frequency bands.

[0127] In some embodiments, when the antenna assembly includes a first feed 7 and a second feed 11, the first feed 7 corresponds to the LB band, and the second feed 11 corresponds to at least one of the MHB band, N78, and N79. Thus, the antenna assembly of this embodiment can cover more frequency bands, which is beneficial to improving the wireless communication performance of electronic devices.

[0128] Combination Figures 6 to 9 As shown, in some embodiments, the operating states of the antenna assembly include a first operating state, a second operating state, a third operating state, and a fourth operating state. In the first operating state, the operating current is distributed along the second radiating stub 2; in the second operating state, the operating current is distributed along the first radiating stub 1 and the second radiating stub 2; in the third operating state, the operating current is distributed along the portion from the fifth end 301 of the second radiating stub 2 and the third radiating stub 3 to the first first upper frame point 31; in the fourth operating state, the operating current is distributed along the portion from the fifth end 301 of the first radiating stub 1, the second radiating stub 2, and the third radiating stub 3 to the second first upper frame point 31.

[0129] On the other hand, this embodiment provides an electronic device that includes the antenna assembly of this application. The electronic device of this embodiment employs the antenna assembly of this application and possesses all the beneficial technical effects of this application.

[0130] Among some possible implementations, refer to Figure 10As shown, the electronic device also includes a frame portion 001 and a middle plate portion 002. The first radiating branch 1, the second radiating branch 2 and the third radiating branch 3 are arranged sequentially on the same side frame of the frame portion 001. The first radiating branch 1, the second radiating branch 2 and the third radiating branch 3 are separated from the middle plate portion 002 by a suspension groove 003.

[0131] In some possible implementations, the electronic device can be any of a variety of computer system devices that are mobile or portable and perform wireless communication. Specifically, the electronic device can be a mobile phone or smartphone (e.g., an iPhone™-based phone, an Android™-based phone), a portable gaming device (e.g., a Nintendo DS™, a PlayStation Portable™, a Gameboy Advance™, an iPhone™), a laptop computer, a PDA, a portable internet device, a music player, and a data storage device, other handheld devices, and devices such as headphones. The electronic device can also be other wearable devices that require charging (e.g., head-mounted devices (HMDs) such as electronic bracelets, electronic necklaces, electronic devices, or smartwatches).

[0132] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0133] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0134] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. An antenna assembly, characterized by The antenna assembly includes: a first radiating stub (1), a second radiating stub (2), a third radiating stub (3), a first circuit structure (4), and at least one parasitic circuit structure (5); The first radial branch (1), the second radial branch (2), and the third radial branch (3) are arranged head-to-head in sequence; One end of the first circuit structure (4) is electrically connected to the end of the first radiating branch (1) facing the second radiating branch (2), and the other end is electrically connected to the end of the second radiating branch (2) facing the first radiating branch (1). The at least one parasitic circuit structure (5) is electrically connected to the third radiating branch (3), and the at least one parasitic circuit structure (5) is used to switch at least a portion of the third radiating branch (3) to a parasitic branch of the first radiating branch (1) and / or the second radiating branch (2).

2. The antenna assembly of claim 1, wherein, The first circuit structure (4) includes a first switching element (41) and at least one first capacitor element (42), wherein the first switching element (41) and the at least one first capacitor element (42) are connected in series.

3. The antenna assembly of claim 2, wherein, When the antenna assembly operates in the first frequency band, the first switching element (41) is disconnected, and the first radiating stub (1) and the second radiating stub (2) are not connected; When the antenna assembly operates in the second frequency band, the first switching element (41) is closed, and the first radiating stub (1) and the second radiating stub (2) are electrically connected through the at least one first capacitor element (42). The center frequency of the first frequency band is greater than the center frequency of the second frequency band.

4. The antenna assembly of claim 2 or 3, wherein, The number of the first capacitor element (42) is at least two; the first switch element (41) includes a first connection terminal (411) and at least two second connection terminals (412); Each of the first capacitor elements (42) is connected in series with a second connection terminal (412), and the first connection terminal (411) is capable of conducting with at least one of the second connection terminals (412), such that at least two of the first capacitor elements (42) are electrically connected between the first radiating stub (1) and the second radiating stub (2).

5. The antenna assembly of claim 4, wherein, At least two of the first capacitor elements (42) have the same or different capacitance values; And / or, The capacitance value of the first capacitor element (42) ranges from 0.3 to 2 pF.

6. The antenna assembly of claim 4, wherein, The first connecting terminal (411) is electrically connected to the second radiating branch (2); the number of the second connecting terminals (412) is at least three; The first circuit structure (4) further includes at least one first capacitive element (43); At least three of the second connection terminals (412) are electrically connected to one end of the at least one first capacitor element (42) and one end of the at least one first capacitive element (43), respectively, and the other end of the at least one first capacitive element (43) is grounded.

7. The antenna assembly of any one of claims 1 to 6, wherein, The third radial branch (3) is provided with at least one first upper frame point (31), and the at least one first upper frame point (31) is located between the two ends of the third radial branch (3); The at least one parasitic circuit structure (5) is electrically connected to the at least one first upper frame point (31), and the parasitic circuit structure (5) is used to switch the portion of the third radiating branch (3) between the corresponding first upper frame point (31) and the second radiating branch (2) to a parasitic branch of the first radiating branch (1) and / or the second radiating branch (2).

8. The antenna assembly according to claim 7, characterized in that, The number of parasitic circuit structures (5) is at least two, and the number of the first upper frame points (31) is at least two; Each of the parasitic circuit structures (5) is electrically connected to one of the first upper frame points (31); Different parasitic circuit structures (5) are used to switch the different portions of the third radiating branch (3) between the corresponding first upper frame point (31) and the second radiating branch (2) to parasitic branches of the first radiating branch (1) and / or the second radiating branch (2) when the antenna assembly is operating in different frequency bands.

9. The antenna assembly according to claim 7 or 8, characterized in that, The antenna assembly also includes a second circuit structure (6) and a first feed source (7); One end of the second circuit structure (6) is electrically connected to one of the first upper frame points (31), and the other end is electrically connected to the first feed source (7); When the first upper frame point (31) connects the parasitic circuit structure (5) and the second circuit structure (6) at the same time, the parasitic circuit structure (5) and the second circuit structure (6) are arranged in parallel, or the parasitic circuit structure (5) is a branch of the second circuit structure (6).

10. The antenna assembly according to any one of claims 1 to 8, characterized in that, A first break (8) is provided between the first radiating branch (1) and the second radiating branch (2), and the end of the first radiating branch (1) facing away from the first break (8) is grounded. A second break (9) is provided between the second radiating branch (2) and the third radiating branch (3), and the end of the third radiating branch (3) facing away from the second break (9) is grounded.

11. The antenna assembly according to claim 10, characterized in that, The second radial branch (2) has a second upper frame point (21) at its end near the second fracture (9); The antenna assembly further includes a third circuit structure (10) and a second feed source (11); one end of the third circuit structure (10) is electrically connected to the second upper frame point (21), and the other end is electrically connected to the second feed source (11).

12. The antenna assembly according to any one of claims 1 to 11, characterized in that, The length of the first radial branch (1) is L1, the length of the second radial branch (2) is L2, and the length of the third radial branch (3) is L3; Where L1+L2≥20mm, and / or, L3>L2>L1.

13. The antenna assembly according to claim 12, characterized in that, When the antenna assembly includes a first feed (7) and a second feed (11), the first feed (7) corresponds to the LB band, and the second feed (11) corresponds to at least one of the MHB band, N78, and N79.

14. An electronic device, characterized in that, The electronic device includes the antenna assembly according to any one of claims 1 to 13.

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