Antenna assemblies, mid-frame assemblies, and electronic devices

Abstract

This application discloses an antenna assembly, a mid-frame assembly, and an electronic device, relating to the field of communication technology. In the antenna assembly, a first feed point of a first radiator receives a first excitation signal; the first radiator and a second radiator are capacitively coupled; the tuning control point of the second radiator is connected to a tuning control circuit; and a second feed point of the second radiator receives a second excitation signal. The tuning control circuit adjusts the first and / or second radiators to generate a mid-to-high frequency band resonant mode driven by the first excitation signal and a low-frequency band resonant mode driven by the second excitation signal. When the mid-to-high frequency band resonant modes include at least LTE mid-to-high frequency band resonant modes and NR mid-to-high frequency band resonant modes, and the low-frequency band resonant modes include at least LTE low-frequency band resonant modes and NR low-frequency band resonant modes, the antenna performance of the antenna assembly in this application is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an antenna assembly, a middle frame assembly and an electronic device. BACKGROUND

[0002] With the development of technology, the popularity of electronic devices with communication functions such as mobile phones is increasing, and the functions are becoming more and more powerful. An antenna assembly is usually included in an electronic device to realize the communication function of the electronic device. However, the communication performance of the antenna assembly in the electronic device in the related art is not good enough, and there is still room for improvement. SUMMARY

[0003] The technical problem to be solved by the present application is to provide an antenna assembly, comprising:

[0004] a first radiator comprising a grounding point and a first free end, the first radiator having a first feed point for receiving a first excitation signal;

[0005] a second radiator comprising a third free end and a second free end, the third free end being arranged to be capacitively coupled with the first free end, the second radiator having a tuning control point and a second feed point for receiving a second excitation signal, the second feed point being arranged between the tuning control point and the second free end; and

[0006] a tuning control circuit connected to the tuning control point, the tuning control circuit being configured to adjust a mid-high frequency band resonance mode generated by the first excitation signal exciting the first radiator and / or the second radiator and a low frequency band resonance mode generated by the second excitation signal exciting the first radiator and / or the second radiator;

[0007] wherein the mid-high frequency band resonance mode at least includes a long term evolution (LTE) mid-high frequency band resonance mode and a new radio (NR) mid-high frequency band resonance mode, and the low frequency band resonance mode at least includes an LTE low frequency band resonance mode and an NR low frequency band resonance mode.

[0008] To solve the above technical problems, the technical scheme adopted is: a middle frame assembly, comprising:

[0009] a substrate;

[0010] a frame arranged at an edge of the substrate; and

[0011] The antenna assembly as described above is arranged on the frame.

[0012] To solve the above technical problems, the technical scheme adopted is: an electronic device, comprising:

[0013] a display screen;

[0014] Housing assembly for mounting the display screen; and

[0015] The antenna assembly as described above is disposed in the housing assembly.

[0016] The beneficial effects of adopting the technical solution described in this application are as follows: In this application, the first feed point of the first radiator receives the first excitation signal, the first radiator and the second radiator are capacitively coupled, the tuning control point of the second radiator is connected to the tuning control circuit, the second feed point of the second radiator receives the second excitation signal, and the tuning control circuit adjusts the mid-to-high frequency band resonant mode generated by the first excitation signal exciting the first radiator and / or the second radiator and the low-frequency band resonant mode generated by the second excitation signal exciting the first radiator and / or the second radiator; when the mid-to-high frequency band resonant mode includes at least the LTE mid-to-high frequency band resonant mode and the NR mid-to-high frequency band resonant mode, and the low-frequency band resonant mode includes at least the LTE low-frequency band resonant mode and the NR low-frequency band resonant mode. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the antenna assembly in one embodiment of this application;

[0019] Figure 2 for Figure 1 The resonant current distribution diagram of some resonant modes in the antenna assembly shown in the embodiment;

[0020] Figure 3 for Figure 1 The resonant current distribution diagram of some resonant modes in the antenna assembly shown in the embodiment;

[0021] Figure 4 for Figure 2 Return loss curves for four resonant modes in the antenna assembly shown in the embodiment.

[0022] Figure 5 for Figure 4 The diagram shows the dynamic adjustment of return loss curves for four resonant modes in the antenna assembly in the illustrated embodiment.

[0023] Figure 6 for Figure 3 The diagram shows the return loss curves for two resonant modes in the antenna assembly shown.

[0024] Figure 7 for Figure 6 the two resonant mode dynamic adjustment return loss curve chart of the antenna assembly shown in figure

[0025] Figure 8 for Figure 1 the structure diagram of the tuning control circuit in the embodiment shown in figure

[0026] Figure 9 for Figure 1 the structure diagram of the first matching circuit cooperating with the first feed in the embodiment shown in figure

[0027] Figure 10 for Figure 9 the structure diagram of the first matching circuit cooperating with the first feed in the embodiment shown in figure

[0028] Figure 11 for Figure 9 the embodiment shown in figure and Figure 10 the comparative diagram of the antenna performance of the antenna assembly in the two embodiments shown in figure

[0029] Figure 12 for Figure 1 the structure diagram of the second matching circuit cooperating with the second feed in the embodiment shown in figure

[0030] Figure 13 the structure diagram of the electronic device in an embodiment of the present application

[0031] Figure 14 for Figure 13 the structure diagram of the antenna assembly mounted on the middle frame assembly in the embodiment shown in figure

[0032] Figure 15 the structure diagram of the electronic device in an embodiment of the present application DETAILED DESCRIPTION

[0033] The present application will be further described below in conjunction with the drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the present application but not to limit the scope of the present application. Similarly, the following embodiments are only part of the embodiments of the present application but not all the embodiments of the present application, and all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] Reference to“an implementation” in this document means that a particular feature, structure, or characteristic described in connection with the implementation can be included in at least one implementation of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same implementation nor are separate or alternative implementations mutually exclusive of other implementations. It is explicitly contemplated that the features, structures, or characteristics described in connection with one implementation can be incorporated into other implementations.

[0035] The present application provides an antenna assembly. The antenna assembly can be applied in an electronic device. The antenna assembly can implement multi-mode switching of mid-high frequency bands, and can also implement multi-mode switching of low frequency bands in some embodiments. In addition, the antenna assembly can also increase the bandwidth of mid-high frequency bands in some embodiments, so that the antenna assembly supports carrier aggregation (CA) of NR-5G (also referred to as 5G new radio, also referred to as 5G new air interface, also referred to as 5G-NR, also referred to as NR-5G, and also referred to as NR (new air interface)) frequency bands and / or CA of LTE (Long Term Evolution) frequency bands and / or dual connectivity (ENDC) combination of 4G wireless access network and 5G-NR.

[0036] As used herein, an“electronic device” (which can also be referred to as a“terminal” or a“mobile terminal” or an“electronic apparatus”) includes, but is not limited to, an apparatus configured to receive / transmit communication signals via a wired line connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate through a wireless interface can be referred to as a“wireless communication terminal,” a“wireless terminal,” or a“mobile terminal.” Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that can combine a cellular radiotelephone with data processing, facsimile, and data communications capabilities; PDAs that can include a wireless radiotelephone, a pager, Internet / intranet access, a Web browser, a notepad, a calendar, and / or a global positioning system (GPS) receiver; and conventional laptop and / or palmtop receivers or other electronic apparatuses that include a wireless radiotelephone transceiver. A handset is an electronic device configured with a cellular communication module.

[0037] Please refer to Figure 1 , Figure 1This is a schematic diagram of the antenna assembly 100 in one embodiment of this application. The antenna assembly 100 can be one or more of the following: a flexible printed circuit (FPC) antenna, a laser direct-structuring (LDS) antenna, a printed direct-structuring (PDS) antenna, and a metal frame antenna. Of course, the antenna assembly 100 can also be other types of antennas, which will not be elaborated upon. This application uses a metal frame antenna as an example for description.

[0038] The antenna assembly 100 may include a first radiator 10 and a second radiator 20 spaced apart by a slot 101. That is, the first radiator 10 and the second radiator 20 are spaced apart and capacitively coupled. The first radiator 10 and the second radiator 20 cooperate to transmit and receive electromagnetic wave signals, realizing the multiplexing of the first radiator 10 and the second radiator 20, realizing the multiplexing of space, and further reducing the size of the antenna assembly 100.

[0039] The terms "first," "second," "third," etc., used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include at least one of those features.

[0040] Please see Figure 1 The first radiator 10 has a grounding point 11 away from the gap 101 and a first free end 12 near the gap 101.

[0041] Grounding point 11 can be grounded. In some embodiments, the grounding point 11 can be arranged to coincide with the free end on the side away from the first free end 12. Figure 1 The length between the grounding point 11 and the free end on the side away from the first free end 12 is reduced, thereby making the size of the first radiator 10 smaller.

[0042] The first free end 12 and the second radiator 20 are spaced apart, that is, the gap 101 is located between the first free end 12 and the second radiator 20.

[0043] The first radiator 10 has a first feed point 13 located between the ground point 11 and the first free end 12. In some embodiments, the first feed point 13 may be connected to a first matching circuit 14. The first matching circuit 14 may be connected to a first feed source 15.

[0044] The first matching circuit 14 is mainly used to meet the requirement of the antenna assembly 100 for the mid-high frequency band. The first matching circuit 14 can include a switch control unit and / or a load circuit, or a tunable capacitor and / or a tunable inductor, or a tunable capacitor and / or a switch control unit. In an embodiment, the switch control unit can be a switch chip with a switch function, or a single-pole multi-throw switch or a single-pole single-throw switch.

[0045] The first feed source 15 can be used to generate a first excitation signal to excite the first radiator 10 and / or the second radiator 20 to generate a mid-high frequency band resonance mode supporting the mid-high frequency band.

[0046] Please refer to Figure 1 The second radiator 20 has a second free end 21 away from the gap 101 and a third free end 22 close to the gap 101.

[0047] The third free end 22 is spaced apart from the first radiator 10, for example, the first free end 12, i.e. the gap 101 is arranged between the first free end 12 and the first radiator 10, for example, the first free end 12.

[0048] The second radiator 20 has a second feed point 23 between the second free end 21 and the third free end 22. In some embodiments, the second feed point 23 is connected with the second matching circuit 24. The second matching circuit 24 can be connected with the second feed source 25.

[0049] The second matching circuit 24 is mainly used to meet the requirement of the antenna assembly 100 for the low frequency band. The second matching circuit 24 can include a switch control unit and / or a load circuit, or a tunable capacitor and / or a tunable inductor, or a tunable capacitor and / or a switch control unit. That is, the second matching circuit 24 can be the same as or similar in structure or similar in function or different in structure from the first matching circuit 14.

[0050] The second feed source 25 can be used to generate a second excitation signal to excite the first radiator 10 and / or the second radiator 20 to generate a low frequency band resonance mode supporting the low frequency band. In some embodiments, the second excitation signal can also excite the first radiator 10 and / or the second radiator 20 to generate other resonance modes.

[0051] The second radiator 20 has a tuning control point 26 between the third free end 22 and the second feed point 23, which can be connected with a tuning control circuit 27. The tuning control circuit 27 is grounded.

[0052] The tuning control circuit 27 can implement the requirements of the antenna assembly 100 to support the low frequency band. Of course, in some embodiments, the tuning control circuit 27 can also implement the requirements of the antenna assembly 100 to support the mid-high frequency band. Thus, the tuning control circuit 27 can include a switch control unit and / or a load circuit, or a tunable capacitor and / or a tunable inductor, or a tunable capacitor and / or a switch control unit. In an embodiment, the switch control unit can be a switch chip with switch function, or a single-pole multi-throw switch or a single-pole single-throw switch.

[0053] In some embodiments, the mid-high frequency band resonance modes supported by the antenna assembly 100 can be adjusted under the control of the tuning control circuit 27 and / or the first matching circuit 14.

[0054] In some embodiments, the mid-high frequency band resonance modes include at least an LTE mid-high frequency band resonance mode and an NR mid-high frequency band resonance mode.

[0055] In some embodiments, the low frequency band resonance modes supported by the antenna assembly 100 can be adjusted under the control of the tuning control circuit 27 and / or the second matching circuit 24.

[0056] In some embodiments, the low frequency band resonance modes include at least an LTE low frequency band resonance mode and an NR low frequency band resonance mode.

[0057] Please refer to Figure 2 , Figure 2 for Figure 1 the resonance current distribution diagrams of some resonance modes in the antenna assembly 100 in the illustrated embodiment. The first feed 15 can be used to generate a first excitation signal to excite the first radiator 10 and / or the second radiator 20. The first excitation signal excites the first radiator 10 and / or the second radiator 20 to generate the mid-high frequency band resonance modes supporting the mid-high frequency band, such as the first resonance mode a1, the second resonance mode a2, the third resonance mode a3, and the fourth resonance mode a4.

[0058] In some embodiments, the antenna assembly 100 works in the fundamental mode between the ground point 11 and the first feed point 13 to generate the first resonance mode a1. That is, the resonance current under the first resonance mode a1 can be distributed between the ground point 11 and the first feed point 13.

[0059] In some embodiments, the antenna assembly 100 works in the fundamental mode between the slot 101 (or the third free end 22) and the tuning control point 26 to generate the second resonance mode a2. That is, the resonance current under the second resonance mode a2 can be distributed between the slot 101 (or the third free end 22) and the tuning control point 26.

[0060] In some embodiments, the antenna assembly 100 operates in the fundamental mode between the gap 101 (or the third free end 22) and the second free end 21 to generate a third resonant mode a3. That is, the resonant current under the third resonant mode a3 can be distributed between the gap 101 (or the third free end 22) and the second free end 21.

[0061] In some embodiments, the antenna assembly 100 operates in the fundamental mode between the gap 101 (or the first free end 12) and the first feed point 13 to generate a fourth resonant mode a4. That is, the resonant current under the fourth resonant mode a4 can be distributed between the gap 101 (or the first free end 12) and the first feed point 13.

[0062] Referring to Figure 3 , Figure 3 the resonant current distribution of the four resonant modes in the antenna assembly 100 in the illustrated embodiment, Figure 1 In some embodiments, the antenna assembly 100 operates in the fundamental mode between the gap 101 (or the third free end 22) and the second feed point 23 to generate a fifth resonant mode a5. That is, the resonant current under the fifth resonant mode a5 can be distributed between the gap 101 (or the third free end 22) and the second feed point 23.

[0063] In some embodiments, the antenna assembly 100 operates in the fundamental mode between the gap 101 (or the third free end 22) and the second free end 21 to generate a sixth resonant mode a6. That is, the resonant current under the sixth resonant mode a6 can be distributed between the gap 101 (or the third free end 22) and the second free end 21.

[0064] Referring to

[0065] and Figure 4 , Figure 5 the return loss curves of the four resonant modes in the antenna assembly 100 in the illustrated embodiment, Figure 4 Figure 2 the return loss curves of the four resonant modes in the antenna assembly 100 in the illustrated embodiment, Figure 5 Figure 4 ​​The diagram illustrates the dynamic adjustment of return loss curves for four resonant modes in the antenna assembly 100 in the illustrated embodiment. The horizontal axis represents frequency (GHz), and the vertical axis represents return loss (dB). The antenna assembly 100 supports a first resonant mode a1, a second resonant mode a2, a third resonant mode a3, and a fourth resonant mode a4. The frequency band corresponding to the first resonant mode a1 is the mid-to-high frequency band b1, the frequency band corresponding to the second resonant mode a2 is the mid-to-high frequency band b2, the frequency band corresponding to the third resonant mode a3 is the mid-to-high frequency band b3, and the frequency band corresponding to the fourth resonant mode a4 is the mid-to-high frequency band b4.

[0066] Figure 4 The return loss curve in the middle can be: Figure 5 The return loss curve c1 is shown in the figure. The frequency bands during which the antenna assembly 100 operates, such as the mid-to-high frequency bands a1, a2, a3, and a4, can be tuned via the tuning control circuit 27. During tuning, the return loss curve can be changed. For example... Figure 5 The return loss curve c1 transforms into the return loss curve c2. For example, return loss curve c2 transforms into return loss curve c3. Figure 5 The return loss curve c3 is transformed into the return loss curve c1.

[0067] exist Figure 5 In the return loss curves c1, c2, and c3, the mid-to-high frequency bands b1 under the first resonant mode a1, b2 under the second resonant mode a2, b3 under the third resonant mode a3, and b4 under the fourth resonant mode a4 together form a relatively wide mid-to-high frequency band.

[0068] When the tuning control circuit 27 tunes the frequency bands of the antenna assembly 100 during operation, such as the mid-to-high frequency bands a1, a2, a3, and a4, the mid-to-high frequency band b1 under the first resonant mode a1, the mid-to-high frequency band b2 under the second resonant mode a2, the mid-to-high frequency band b3 under the third resonant mode a3, and the mid-to-high frequency band b4 under the fourth resonant mode a4 together form the mid-to-high frequency band bandwidth. In some embodiments, the mid-to-high frequency band includes at least the LTE mid-to-high frequency band and the NR mid-to-high frequency band.

[0069] In some embodiments, the CA of the high-frequency band in NR includes at least one of the CA of N1 band and N41 band, the CA of N1 band and N78 band, the CA of N3 band and N41 band, and the CA of N3 band and N78 band.

[0070] In an embodiment, the LTE mid-high frequency bands include at least one of LTE B1 band, LTE B3 band, LTE B4 band, LTE B7 band, LTE B38 band, LTE B39 band, LTE B40 band and LTE B41 band, and / or the NR mid-high frequency bands include at least one of N1 band, N3 band, N40 band, N41 band and N78 band.

[0071] The mid-high frequency bands of the antenna assembly 100, for example, the mid-high frequency band b1 under the first resonance mode a1, the mid-high frequency band b2 under the second resonance mode a2, the mid-high frequency band b3 under the third resonance mode a3, the mid-high frequency band b4 under the fourth resonance mode a4, can include the CA of the NR mid-high frequency bands and / or the ENDC of the LTE mid-high frequency bands and the NR mid-high frequency bands.

[0072] In some embodiments, the ENDC of the LTE mid-high frequency bands and the NR mid-high frequency bands includes at least one of the ENDC of the LTE B1 band and the N41 band, the ENDC of the LTE B3 band and the N41 band, the ENDC of the LTE B39 band and the N41 band, the ENDC of the LTE B1 band and the N78 band, the ENDC of the LTE B3 band and the N78 band, the ENDC of the LTE B39 band and the N78 band.

[0073] In an embodiment, the mid-high frequency bands of the antenna assembly 100, for example, the mid-high frequency band b1 under the first resonance mode a1, the mid-high frequency band b2 under the second resonance mode a2, the mid-high frequency band b3 under the third resonance mode a3, the mid-high frequency band b4 under the fourth resonance mode a4, can include the CA of the LTE mid-high frequency bands. In some embodiments, the CA of the LTE mid-high frequency bands includes the CA of the LTE B1 band and the LTE B3 band and / or the CA of the bands LTE B1 band, LTE B3 band, LTE B7 band.

[0074] Please refer to Figure 5, the horizontal axis is frequency (GHz), and the vertical axis is return loss (dB). The return loss curve c1 has d1 (1.71, -9.6691), d2 (1.88, -8.3027), and it can be seen that the middle-high frequency band b1 can include the frequency band 1.71-1.88 GHz, and the return loss is less than -7.5 dB, so the antenna assembly 100 can work well in the first resonant mode a1. The return loss curve c1 has d3 (1.92, -7.6373), d4 (2.17, -12.374), and it can be seen that the middle-high frequency band b2 can include the frequency band 1.92-2.17 GHz, and the return loss is less than -7.5 dB, so the antenna assembly 100 can work well in the second resonant mode a2. The return loss curve c1 has d9 (3.4, -6.32) and d10 (3.6, -6.1354), and it can be seen that the middle-high frequency band b4 can include the frequency band 3.4-3.6 GHz, and the return loss of part of the frequency band is less than -7.5 dB, so the antenna assembly 100 can work well in the fourth resonant mode a4.

[0075] The return loss curve c2 after tuning by the tuning control circuit 27 has d5 (2.3, -6.3584), d6 (2.4, -28.841), and it can be seen that the middle-high frequency band b2 can include the frequency band 2.3-2.4 GHz, and the return loss of part of the frequency band is less than -7.5 dB, and even the return loss can be -28.841 dB, so the antenna assembly 100 can work well in the second resonant mode a2, and the change of the antenna performance of the antenna assembly 100 can be realized under the tuning of the tuning control circuit 27.

[0076] The return loss curve c3 after tuning by the tuning control circuit 27 has d7 (2.5, -5.2057), d8 (2.7, -16.357), and it can be seen that the middle-high frequency band b2 can include the frequency band 2.5-2.7 GHz, and the return loss of part of the frequency band is less than -7.5 dB, and even the return loss can be -16.357 dB, so the antenna assembly 100 can work well in the second resonant mode a2, and the change of the antenna performance of the antenna assembly 100 can be realized under the tuning of the tuning control circuit 27.

[0077] Further, when the tuning control circuit 27 tunes the frequency band, such as the middle-high frequency band a1, a2, a3, a4, of the antenna assembly 100 during work, the middle-high frequency band b1 in the first resonant mode a1, the middle-high frequency band b2 in the second resonant mode a2, the middle-high frequency band b3 in the third resonant mode a3, and the middle-high frequency band b4 in the fourth resonant mode a4 can be tuned to form a middle-high frequency band bandwidth together.

[0078] Please refer to Figure 6 and Figure 7 ,Figure 6 For Figure 3 the return loss curve of the two resonant modes in the antenna assembly 100, Figure 7 For Figure 6 the return loss curve of the two resonant modes in the antenna assembly 100, Figure 6 the return loss curve in Figure 7 the return loss curve c4 in The antenna assembly 100 can support a fifth resonant mode a5, a sixth resonant mode a6. Wherein the frequency band corresponding to the fifth resonant mode a5 is the low frequency band b5, and the frequency band corresponding to the sixth resonant mode a6 is the frequency band b6, wherein there are e1(0.744, -6.7083), e2(1.312, -2.4034) on the return loss curve c4, the low frequency band b5 can include 0.744GHz, the frequency band b6 can include 1.312GHz, and -6.7083dB is less than -2.4034dB, so the antenna performance of the antenna assembly 100 under the fifth resonant mode a5 is better than that under the sixth resonant mode a6.

[0079] The frequency band of the antenna assembly 100 in operation, such as the low frequency band b5, the frequency band b6, can be tuned by the tuning control circuit 27. And in the tuning, the return loss curve can change. For example Figure 7 the return loss curve c4 in Figure 7 the return loss curve c5 in Figure 7 the return loss curve c6 in

[0080] In Figure 7 the return loss curves c4, c5, c6 in The low frequency band b5 under the fifth resonant mode a5 can be different frequency bands in the low frequency band. Further, the low frequency band b5 can include the LTE low frequency band and / or the NR low frequency band by tuning by the tuning control circuit 27.

[0081] In some embodiments, the LTE low frequency band includes at least one of the LTE B5 band, the LTE B8 band, the LTE B12 band, the LTE B17 band, the LTE B18 band, the LTE B19 band, the LTE B20 band, the LTE B26 band, and the LTE B28 band.

[0082] In some embodiments, the NR low frequency band includes at least one of the N5 band, the N8 band, the N20 band, and the N28 band.

[0083] Please refer to Figure 7The horizontal axis represents frequency (GHz), and the vertical axis represents return loss (dB). Return loss curve c4 shows e3 (0.7, -4.8277) and e4 (0.79, -4.9648), and the low-frequency band b5 can include 0.7-0.79 GHz. Return loss curve c5 shows e5 (0.824, -6.4661) and e6 (0.894, -6.609), and the low-frequency band b5 can include 0.824-0.894 GHz. Return loss curve c5 shows e7 (0.88, -7.2099) and e8 (0.96, -7.2059), and the low-frequency band b5 can include 0.88-0.96 GHz. The return loss changes as the antenna assembly 100 is adjusted by the tuning control circuit 27. By comparing e3 (0.7, -4.8277), e4 (0.79, -4.9648), e5 (0.824, -6.4661), e6 (0.894, -6.609), e7 (0.88, -7.2099), and e8 (0.96, -7.2059), it can be seen that on the return loss curve c6, the return loss of the low-frequency band b5 under the fifth resonant mode a5 is better than that of the low-frequency band b5 on the return loss curves c4 and c5. Therefore, after tuning by the tuning control circuit 27, the bandwidth of the low-frequency band can be adjusted, and the antenna performance of the fifth resonant mode a5 can be improved.

[0084] In one embodiment, the tuning control circuit 27 includes a switch control unit 271 and / or an adjustable capacitor. In one embodiment, please refer to... Figure 8 , Figure 8 for Figure 1 The schematic diagram of the tuning control circuit 27 in the illustrated embodiment is shown. The tuning control circuit 27 may include a first resistor Rfc whose connection terminal is connected to the tuning control point 26, a first inductor L1 whose connection terminal is connected to the other connection terminal of the first resistor Rfc and whose other connection terminal is grounded, and a first branch 272, a second branch 273, a third branch 274, and a fourth branch 275 respectively connected to the other connection terminal of the first resistor Rfc.

[0085] In some embodiments, the inductance of the first inductor L1 is 80nH.

[0086] The first branch 272 may include a first switch SW1 with one connection terminal connected to the other connection terminal of the first resistor Rfc, a second resistor Rf1 with one connection terminal connected to the other connection terminal of the first switch SW1, a second switch SWsh1 with one connection terminal connected to the other connection terminal of the first switch SW1 and the other connection terminal grounded, and a first capacitor C1 with one connection terminal connected to the other connection terminal of the second resistor Rf1 and the other connection terminal grounded.

[0087] The second branch 273 can include a first switch SW2 having one connection end connected to the other connection end of the first resistor Rfc, a second resistor Rf2 having one connection end connected to the other connection end of the first switch SW2, a second switch SWsh2 having one connection end connected to the other connection end of the first switch SW2 and the other connection end grounded, and a first capacitor C2 having one connection end connected to the other connection end of the second resistor Rf2 and the other connection end grounded.

[0088] It can be seen that the first branch 272 and the second branch 273 have the same circuit structure. In some embodiments, the capacitance of the first capacitor C1 is 2.9 pF. In some embodiments, the capacitance of the first capacitor C2 is 1.7 pF.

[0089] The third branch 274 can include a third switch SW3 having one connection end connected to the other connection end of the first resistor Rfc, a third resistor Rf3 having one connection end connected to the other connection end of the third switch SW3, a fourth switch SWsh3 having one connection end connected to the other connection end of the third switch SW3 and the other connection end grounded, and a second inductor L2 having one connection end connected to the other connection end of the third resistor Rf3 and the other connection end grounded.

[0090] The fourth branch 275 can include a third switch SW4 having one connection end connected to the other connection end of the first resistor Rfc, a third resistor Rf4 having one connection end connected to the other connection end of the third switch SW4, a fourth switch SWsh4 having one connection end connected to the other connection end of the third switch SW4 and the other connection end grounded, and a second inductor L3 having one connection end connected to the other connection end of the third resistor Rf4 and the other connection end grounded.

[0091] It can be seen that the third branch 274 and the fourth branch 275 have the same circuit structure. In some embodiments, the inductance of the second inductor L2 is 9.4 nH. In some embodiments, the inductance of the second inductor L3 is 19 nH.

[0092] It can be understood that the first switch SW1, the second switch SWsh1, the first switch SW2, the second switch SWsh2, the third switch SW3, the fourth switch SWsh3, the third switch SW4, and the fourth switch SWsh4 can constitute the switch control unit 271. Of course, the switch control unit 271 can also include other structures. In some embodiments, the switch control unit 271 can also be based on the first switch SW1, the second switch SWsh1, the first switch SW2, the second switch SWsh2, the third switch SW3, the fourth switch SWsh3, the third switch SW4, and the fourth switch SWsh4 to deform in structure and control mode.

[0093] In some embodiments, please refer to Figure 8Tuning is performed using the switch control unit 271. During tuning, the switch control unit 271 and the supported frequency bands are shown in the table below:

[0094]

[0095] In some embodiments, please refer to Figure 9 , Figure 9 for Figure 1 The illustrated embodiment shows a schematic diagram of the structure of the first matching circuit 14 in conjunction with the first feed source 15. The first matching circuit 14 may include a third inductor L4 with one connection terminal connected to the first feed point 13 and the other connection terminal grounded; a second capacitor C3 with one connection terminal connected to the first feed point 13; a third capacitor C4 with one connection terminal connected to the other connection terminal of the second capacitor C3 and the other connection terminal connected to the first feed source 15; and a fourth inductor L5 with one connection terminal connected to the other connection terminal of the second capacitor C3 and the other connection terminal connected to the first feed source 15. In one embodiment, the inductance of the third inductor L4 is 18nH. In one embodiment, the capacitance of the second capacitor C3 is 0.8pF. In one embodiment, the capacitance of the third capacitor C4 is 0.8pF. In one embodiment, the inductance of the fourth inductor L5 is 18nH.

[0096] In some embodiments, please refer to Figure 10 , Figure 10 for Figure 9 The illustrated embodiment shows a schematic diagram of the structure when the first matching circuit 14 cooperates with the first feed source 15. The first matching circuit 14 may further include a fifth switch SW5 with one connection terminal connected to the first feed point 13, and a fourth capacitor C5 with one connection terminal connected to another connection terminal of the fifth switch SW5 and the other connection terminal connected to another connection terminal of the second capacitor C3. It is understood that the fifth switch SW5 and the fourth capacitor C5 are connected in series; that is, their order can be adjusted, for example, they can be interchanged. In one embodiment, the capacitance of the fourth capacitor C5 is 1pF. In some embodiments, the fifth switch SW5 may be a single-pole single-throw switch.

[0097] In some embodiments, please refer to Figure 11 , Figure 11 for Figure 9 The illustrated embodiments and Figure 10 The diagram illustrates a comparison of the antenna performance of the antenna assembly 100 in the two embodiments shown. Wherein, f1 is... Figure 9 The system total efficiency (System total efficiency = System radiation efficiency - Return loss) curve of the antenna assembly 100 in the illustrated embodiment is shown in Figure F2. Figure 10The system overall efficiency curves of the antenna assembly 100 in the illustrated embodiment are shown. Curve f2 has g1 (2.5, -1.9869) and g2 (2.7, -1.9291). Curve f1 has g3 (2.5, -2.1193) and g4 (2.7, -2.7151). In the 2.5-2.7 GHz frequency band, the system overall efficiency of the antenna assembly 100 in curve f2 is greater than that in curve f1. Therefore, the configuration of the fifth switch SW5 or the combination of the fifth switch SW5 and the fourth capacitor C5 can improve the system overall efficiency of the antenna assembly 100. In some embodiments, the system overall efficiency of the antenna assembly 100 in carrier aggregation bands (e.g., LTE Band 41 (LTE B41) band, NR-5G N41 band, or LTE Band 41 (LTE B41) band + NR-5G N41 band) can be improved.

[0098] In some embodiments, please refer to Figure 12 , Figure 12 for Figure 1 The illustrated embodiment shows a schematic diagram of the structure of the second matching circuit 24 in conjunction with the second feed source 25. The second matching circuit 24 may include a fifth inductor L6 with one connection terminal connected to the second feed point 23 and the other connection terminal grounded; a sixth inductor L7 with one connection terminal connected to the second feed point 23 and the other connection terminal connected to the second feed source 25; and a fifth capacitor C6 with one connection terminal connected to the other connection terminal of the sixth inductor L7 and the other connection terminal grounded. In some embodiments, the inductance of the fifth inductor L6 is 3.9nH. In some embodiments, the inductance of the sixth inductor L7 is 6.2nH. In some embodiments, the capacitance of the fifth capacitor C6 is 2.5pF.

[0099] The following describes an electronic device that can be equipped with the antenna assembly 100 in the above embodiments. This electronic device can be any of a plurality of electronic devices, including but not limited to cellular phones, smartphones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, calculators, programmable remote controls, pagers, netbooks, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Image Experts Group (MPEG-1 or MPEG-2), Audio Layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

[0100] Please see Figure 13 , Figure 13This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. The electronic device 200 may include a display screen 30 for displaying information, a mid-frame assembly 40 for mounting the display screen 30 on one side, a circuit board 50 mounted on the mid-frame assembly 40, a battery 60 mounted on the mid-frame assembly 40, and a rear cover 70 that is snapped onto the other side of the mid-frame assembly 40.

[0101] In some embodiments, electronic device 200 may include, but is not limited to, electronic devices with communication functions such as mobile phones, mobile internet devices (MIDs), e-books, portable playback stations (PSPs), or personal digital assistants (PDAs).

[0102] The display screen 30 can be a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display screen, etc., for displaying information and images.

[0103] The mid-frame assembly 40 can be made of metals such as magnesium alloy, aluminum alloy, and stainless steel, but it is not limited to these materials and can also be made of other materials. The mid-frame assembly 40 can be placed between the display screen 30 and the back cover 70. The mid-frame assembly 40 can be used to support the display screen 30. The mid-frame assembly 40 and the back cover 70 are fastened together to form the outer contour of the electronic device 200, and form a receiving cavity inside. The receiving cavity can be used to accommodate electronic components such as the camera, circuit board 50, battery 60, processor, and various types of sensors in the electronic device 200.

[0104] The circuit board 50 is installed within the receiving cavity and can be installed in any position within the cavity. The circuit board 50 can serve as the motherboard of the electronic device 200. The processor of the electronic device 200 can be located on the circuit board 50. The circuit board 50 can also integrate one, two, or more functional components such as a motor, microphone, speaker, receiver, headphone jack, universal serial bus interface (USB interface), camera, proximity sensor, ambient light sensor, and gyroscope. Simultaneously, the display screen 30 can be connected to the circuit board 50.

[0105] The battery 60 is installed within the receiving cavity and can be installed in any position within the cavity. The battery 60 can be connected to the main circuit board 50 to power the electronic device 200. The main circuit board 50 may be equipped with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 60 to various electronic components in the electronic device 200, such as the display screen 30.

[0106] The back cover 70 can be made of the same material as the mid-frame assembly 40, or other materials. The back cover 70 can be integrally formed with the mid-frame assembly 40. In some embodiments, the back cover 70 can wrap around the mid-frame assembly 40 and support the display screen 30. Structures such as a rear camera hole and a fingerprint recognition module mounting hole can be formed on the back cover 70.

[0107] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0108] Please see Figure 14 , Figure 14 for Figure 13 The illustrated embodiment shows a schematic diagram of the antenna assembly 100 mounted on the mid-frame assembly 40. The mid-frame assembly 40 may include a substrate 41 for supporting the display screen 30 and a frame 42 surrounding the substrate 41. The substrate 41 is disposed opposite to the rear cover 70. The frame 42 can be used to fasten and connect with the rear cover 70. That is, the substrate 41, the frame 42, and the rear cover 70 form a receiving cavity.

[0109] The substrate 41 can be a conductive metal, or other materials. A ground plane and a feed source can be disposed on the substrate 41. In some embodiments, the ground plane and the feed source may not be disposed on the substrate 41, but directly on the circuit board 50.

[0110] The frame 42 can be made of a conductive metal, so it can also be called a "metal frame". Of course, the frame 42 can also be made of other materials. The frame 42 may include a first frame 421, a second frame 422, a third frame 423, and a fourth frame 424 connected end to end. The first frame 421, the second frame 422, the third frame 423, and the fourth frame 424 surround the substrate 41 and can be connected and fixed to the substrate 41.

[0111] In some embodiments, the first border 421, the second border 422, the third border 423, and the fourth border 424 form a rounded rectangle. Of course, other shapes such as circles or triangles can also be used. In some embodiments, the first border 421 and the third border 423 are positioned opposite each other, and the second border 422 and the fourth border 424 are positioned opposite each other.

[0112] The mid-frame assembly 40 and the rear cover 70 can form a housing assembly. However, the housing assembly is not limited to the mid-frame assembly 40 and the rear cover 70. The antenna assembly 100 can be installed using methods such as bonding, adhesive, snap-fit, clipping, or welding.

[0113] In some embodiments, the antenna assembly 100 may be formed from a housing assembly. For example, the antenna assembly 100 may be formed from a frame 42, such as a first frame 421 and a second frame 422.

[0114] Please refer to it again. Figure 14 A gap 43 is provided between the second frame 422 and the substrate 41. The gap 43 may extend toward the first frame 421 in the extending direction of the second frame 422. The gap 43 may also extend in the extending direction of the first frame 421 to form between the first frame 421 and the substrate 41.

[0115] The second frame 422 is provided with slots 431 and 432 that communicate with the gap 43, so as to form the first radiator 10 of the antenna assembly 100 between the slots 431 and 432.

[0116] A slit 433 communicating with the gap 43 is provided on the first frame 421 so that the frame 42 forms the second radiator 20 of the antenna assembly 100 between the slit 431 and the slit 433.

[0117] In this application, the first radiator 10 utilizes the second frame 422, which can reduce the use of the first frame 421 and effectively improve the performance loss of the antenna assembly 100 caused by the human hand. Specifically, the length of the first radiator 10 utilizing the second frame 422 can be adjusted according to the model of the hand and the resonance requirement of the required frequency band.

[0118] Understandably, the extension length of the gap 43 can be determined as needed. In some embodiments, the gap 43 may not extend in the extension direction of the second frame 422, that is, it may not be provided between the second frame 422 and the substrate 41. In some embodiments, the gap 43 may not extend in the extension direction of the first frame 421, that is, it may not extend between the first frame 421 and the substrate 41.

[0119] In addition, the positions of gaps 431, 432 and 433 can be adjusted as needed and according to the length of the border, which will not be elaborated further.

[0120] The tuning control circuit 27 in the antenna assembly 100 can be connected to the ground plane on the substrate 41 or the circuit board 50 for grounding.

[0121] The first feed 15 in the antenna assembly 100 may be a feed on the substrate 41 or the circuit board 50.

[0122] The grounding point 11 in the antenna assembly 100 can be connected to the ground plane on the substrate 41 or the circuit board 50 to ground.

[0123] The second feed 25 in the antenna assembly 100 may be a feed on the substrate 41 or the circuit board 50.

[0124] Understandably, in order to strengthen the connection between the substrate 41 and the frame 42, insulating materials such as resin can be filled between the gaps 43, slits 431, slits 432 and slits 433 to make the first radiator 10 and the second radiator 20 in the antenna assembly 100 part of the frame 42, thereby improving the appearance of the electronic device 200.

[0125] The following describes an electronic device; please refer to [link / reference]. Figure 15 , Figure 15 This is a schematic diagram illustrating the structural composition of an electronic device 300 according to one embodiment of this application. The electronic device 300 can be a mobile phone, tablet computer, laptop computer, or wearable device, etc. This embodiment uses a mobile phone as an example. The structure of the electronic device 300 may include an RF circuit 310 (such as the antenna assembly 100 in the above embodiment), a memory 320, an input unit 330, a display unit 340 (such as the display screen 30 in the above embodiment), a sensor 350, an audio circuit 360, a WiFi module 370, a processor 380, and a power supply 390 (such as the battery 60 in the above embodiment). The RF circuit 310, memory 320, input unit 330, display unit 340, sensor 350, audio circuit 360, and WiFi module 370 are all connected to the processor 380. The power supply 390 provides power to the entire electronic device 300.

[0126] Specifically, the RF circuit 310 is used to transmit and receive signals. The memory 320 is used to store data instruction information. The input unit 330 is used to input information, and may specifically include a touch panel 3301 and other input devices 3302 such as operation buttons. The display unit 340 may include a display panel 3401, etc. The sensor 350 includes infrared sensors, laser sensors, position sensors, etc., used to detect user proximity signals, distance signals, etc. The speaker 3601 and the microphone (or receiver assembly) 3602 are connected to the processor 380 through the audio circuit 360 for transmitting and receiving sound signals. The WiFi module 370 is used to receive and transmit WiFi signals. The processor 380 is used to process data information of the electronic device.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0128] 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, depending on actual needs.

[0129] Furthermore, the functional units in the various embodiments of this application 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. The integrated unit can be implemented in hardware or as a software functional unit.

[0130] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An antenna assembly, characterized by Comprising: a first radiator comprising a ground point and a first free end, the first radiator having a first feed point for receiving a first excitation signal; a second radiator comprising a second free end and a third free end, the third free end being spaced apart from the first free end for capacitive coupling, the second radiator having a tuning control point and a second feed point for receiving a second excitation signal, the second feed point being disposed between the tuning control point and the second free end; and a tuning control circuit connected to the tuning control point, the tuning control circuit being configured to adjust a mid-high frequency band resonant mode generated by the first radiator and / or the second radiator excited by the first excitation signal and a low frequency band resonant mode generated by the first radiator and / or the second radiator excited by the second excitation signal; wherein the mid-high frequency band resonant mode comprises at least a Long Term Evolution (LTE) mid-high frequency band resonant mode and a New Radio (NR) mid-high frequency band resonant mode, and the low frequency band resonant mode comprises at least a LTE low frequency band resonant mode and a NR low frequency band resonant mode; the tuning control circuit is configured to adjust the mid-high frequency band resonant mode to support at least one of: carrier aggregation (CA) of the NR mid-high frequency band; CA of the LTE mid-high frequency band; and dual connectivity (DC) of the LTE mid-high frequency band and the NR mid-high frequency band; the mid-high frequency band resonant mode comprises at least one of a first resonant mode, a second resonant mode, a third resonant mode and a fourth resonant mode, a resonant current of the first resonant mode being distributed between the ground point and the first feed point, a resonant current of the second resonant mode being distributed between the third free end and the tuning control point, a resonant current of the third resonant mode being distributed between the third free end and the second free end, and a resonant current of the fourth resonant mode being distributed between the first free end and the first feed point; wherein the tuning control circuit comprises: a first resistor having one connection connected to the tuning control point; a first inductor having one connection connected to another connection of the first resistor and another connection grounded; a first branch and a second branch, each of the first branch and the second branch comprising: a first switch having one connection connected to another connection of the first resistor; a second resistor having one connection connected to another connection of the first switch; a second switch having one connection connected to another connection of the first switch and another connection grounded; and a first capacitor having one connection connected to another connection of the second resistor and another connection grounded; and a third branch and a fourth branch, each of the third branch and the fourth branch comprising: a third switch having one connection connected to another connection of the first resistor; a third resistor having one connection connected to another connection of the third switch; a fourth switch having one connection connected to another connection of the third switch and another connection grounded; and a second inductor having one connection connected to another connection of the third resistor and another connection grounded. ​ The tuning control circuit is configured to adjust the low-frequency band resonant mode to support LTE B28 band and / or N28 band when the first switch and the third switch are open. The tuning control circuit is configured to adjust the low-frequency band resonant mode to support LTE B5 band and / or N5 band when the third switch of the fourth branch is closed. The tuning control circuit is configured to adjust the low-frequency band resonant mode to support LTE B8 band and / or N8 band when the third switch of the third branch is closed. The tuning control circuit is configured to adjust the mid-high-frequency band resonant mode to support LTE B3 band and / or LTE B39 band and / or N3 band and / or LTE B1 band and LTE B3 band, LTE B41 band, N78 band ENDC when the first switch is closed. The tuning control circuit is configured to adjust the mid-high-frequency band resonant mode to support LTE B1 band and / or N1 band when the first switch is closed. The tuning control circuit is configured to adjust the mid-high-frequency band resonant mode to support LTE B40 band and / or N40 band when the first switch of the first branch, the third switch of the third branch, and the third switch of the fourth branch are closed. The tuning control circuit is configured to adjust the mid-high-frequency band resonant mode to support LTE B41 band and / or LTE B7 band and / or N41 band when the first switch of the second branch and the third switch of the fourth branch are closed.

2. The antenna assembly of claim 1, wherein, The CA of the NR mid-high-frequency band includes at least one of the CA of N1 band and N41 band, the CA of N1 band and N78 band, the CA of N3 band and N41 band, and the CA of N3 band and N78 band.

3. The antenna assembly of claim 1, wherein, The ENDC of the LTE mid-high-frequency band and the NR mid-high-frequency band includes at least one of the ENDC of LTE B1 band and N41 band, the ENDC of LTE B3 band and N41 band, the ENDC of LTE B39 band and N41 band, the ENDC of LTE B1 band and N78 band, the ENDC of LTE B3 band and N78 band, and the ENDC of LTE B39 band and N78 band.

4. The antenna assembly of claim 1, wherein, The CA of the LTE mid-high-frequency band includes the CA of LTE B1 band and LTE B3 band and / or the CA of LTE B1 band and LTE B3 band, LTE B7 band.

5. The antenna assembly of claim 1, wherein, The LTE mid-high-frequency band includes at least one of LTE B1 band, LTE B3 band, LTE B4 band, LTE B7 band, LTE B38 band, LTE B39 band, LTE B40 band, and LTE B41 band. The NR mid-high-frequency band includes at least one of N1 band, N3 band, N40 band, N41 band, and N78 band.

6. The antenna assembly of claim 1, wherein, The LTE low-frequency band includes at least one of an LTE B5 band, an LTE B8 band, an LTE B12 band, an LTE B17 band, an LTE B18 band, an LTE B19 band, an LTE B20 band, an LTE B26 band, and an LTE B28 band. The NR low-frequency band includes at least one of an N5 band, an N8 band, an N20 band, and an N28 band.

7. The antenna assembly of claim 1, wherein, The low-frequency band resonance mode includes a fifth resonance mode, and a resonance current in the fifth resonance mode is distributed between the third free end and the second feeding point.

8. The antenna assembly of claim 1, wherein, The low-frequency band resonance mode includes a sixth resonance mode, and a resonance current in the sixth resonance mode is distributed between the third free end and the second free end.

9. The antenna assembly of any of claims 1-8, wherein, The antenna assembly further includes: a first matching circuit, a connection end of which is connected to the first feeding point; and a first feed source connected to another connection end of the first matching circuit, for generating the first excitation signal.

10. The antenna assembly of claim 9, wherein, The first matching circuit includes: a third inductor, a connection end of which is connected to the first feeding point, and another connection end of which is grounded; a second capacitor, a connection end of which is connected to the first feeding point; a third capacitor, a connection end of which is connected to another connection end of the second capacitor, and another connection end of which is connected to the first feed source; and a fourth inductor, a connection end of which is connected to another connection end of the second capacitor, and another connection end of which is connected to the first feed source.

11. The antenna assembly of claim 10, wherein, The first matching circuit includes: a fourth capacitor, a connection end of which is connected to the first feeding point; and a fifth switch, a connection end of which is connected to another connection end of the fourth capacitor, and another connection end of which is connected to another connection end of the second capacitor.

12. The antenna assembly of claim 1, wherein, The antenna assembly further includes: a second matching circuit, a connection end of which is connected to the second feeding point; and a second feed source connected to another connection end of the second matching circuit, for generating the second excitation signal.

13. The antenna assembly of claim 12, wherein, The second matching circuit includes: a fifth inductor, a connection end of which is connected to the second feeding point, and another connection end of which is grounded; a sixth inductor, a connection end of which is connected to the second feeding point, and another connection end of which is connected to the second feed source; and a fifth capacitor, a connection end of which is connected to another connection end of the sixth inductor, and another connection end of which is grounded.

14. A middle frame assembly, characterized in that, It includes: a substrate; a frame provided at an edge of the substrate; and an antenna assembly according to any one of claims 1-13, provided on the frame. It includes:

15. An electronic device, comprising: a display screen; a housing assembly for mounting the display screen; and an antenna assembly according to any one of claims 1-13, provided on the housing assembly. ​ ​

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