Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment, and belongs to the technical field of antennas. The antenna assembly comprises a frame, an NFC circuit and a first antenna. The frame is provided with a breaking joint and a first grounding point, a first antenna branch knot is formed on the part, located between the breaking joint and the first grounding point, of the frame, the first antenna branch knot is provided with a first upper frame point and a second upper frame point, and the first upper frame point is located on the side, close to the breaking joint, of the second upper frame point; the NFC circuit is electrically connected with the first upper frame point; the first antenna comprises a matching circuit and a radio frequency unit, the matching circuit is electrically connected with the second upper frame point and the radio frequency unit, and the matching circuit is used for adjusting the circle diagram position of the first antenna to a target matching point. According to the invention, when the branch length of the first antenna is relatively long, the performance of NFC is ensured, and the matching circuit also enables the first antenna to have relatively good performance.

Description

Technical Field

[0001] The present disclosure relates to the technical field of antennas, and particularly to an antenna assembly and an electronic device. Background Art

[0002] An NFC (Near Field Communication) device is usually provided in an electronic device, which can identify and exchange data with a compatible device within a short distance, and is commonly used for access control keys, transportation cards, payment cards, etc. in daily life.

[0003] The current NFC device generally includes an NFC circuit and a coil. The NFC circuit is located on the substrate of the main board of the electronic device and is electrically connected to the coil. The coil is usually located above the battery of the electronic device. When using the NFC device, it is necessary to bring the position of the coil close to the compatible device so that the two can identify or exchange data.

[0004] However, in daily life, users tend to bring the top of the mobile phone terminal close to the compatible device. Therefore, an NFC upper frame (i.e., setting the NFC antenna on the border of the electronic device) has become a major development trend of electronic devices. However, since there are many other antennas provided on the border of the electronic device and the upper frame length required for the NFC upper frame is relatively large, some of the upper frame lengths of other antennas have to be sacrificed after the NFC upper frame, resulting in a reduction in the performance of other antennas on the electronic device. Summary of the Invention

[0005] Embodiments of the present disclosure provide an antenna assembly and an electronic device, which can solve the technical problems existing in the related art. The technical solutions of the antenna assembly and the electronic device are as follows:

[0006] On the one hand, an embodiment of the present disclosure provides an antenna assembly, which includes a border, an NFC circuit, and a first antenna;

[0007] The border has a slit and a first grounding point. The part of the border between the slit and the first grounding point forms a first antenna stub. The first antenna stub has a first upper frame point and a second upper frame point. The first upper frame point is located on the side closer to the slit than the second upper frame point;

[0008] The NFC circuit is electrically connected to the first upper frame point;

[0009] The first antenna includes a matching circuit and a radio frequency unit. The matching circuit is respectively electrically connected to the second upper frame point and the radio frequency unit, and the matching circuit is used to adjust the circular diagram position of the first antenna to a target matching point.

[0010] In a possible implementation, the matching circuit includes a first matching module and a second matching module;

[0011] The first matching module is used to adjust the position of the Smith chart to the first quadrant;

[0012] The second matching module is used to adjust the position of the Smith chart to the target matching point.

[0013] In a possible implementation, the first matching module has a first connection end, a second connection end, and a third connection end. The first connection end is grounded, and the second connection end is electrically connected to the second upper frame point;

[0014] The second matching module has a fourth connection end, a fifth connection end, and a sixth connection end. The fourth connection end is electrically connected to the third connection end, the fifth connection end is grounded, and the sixth connection end is electrically connected to the radio frequency unit.

[0015] In a possible implementation, the first matching module includes a first inductor and a second inductor, and the second matching module includes a first capacitor and a second capacitor;

[0016] One end of the first inductor is grounded, the other end of the first inductor is electrically connected to the second upper frame point, one end of the second inductor is electrically connected to the second upper frame point, the other end of the second inductor is electrically connected to one end of the first capacitor, the other end of the first capacitor is electrically connected to the radio frequency unit, one end of the second capacitor is electrically connected to the radio frequency unit, and the other end of the second capacitor is grounded.

[0017] In a possible implementation, the value range of the first inductor is 25 nH to 35 nH (nanohenry), the value range of the second inductor is 7 nH to 15 nH, the value range of the first capacitor is 0.8 pF to 1.2 pF (picofarad), and the value range of the second capacitor is 2.5 pF to 4.5 pF.

[0018] In a possible implementation, the first antenna radiates signals in the first frequency band through the IFA (Inverted-F antenna) mode, and the first antenna radiates signals in the second frequency band through the monopole mode.

[0019] In a possible implementation, the signal in the first frequency band is a GPS L5 signal, and the signal in the second frequency band is a GPS L1 signal.

[0020] In a possible implementation, the value range of the length of the stub of the first antenna stub is 25 mm to 27 mm (millimeter).

[0021] In a possible implementation, the antenna assembly further includes a second antenna;

[0022] The frame further has a second grounding point. A portion of the frame between the slot and the second grounding point forms a second antenna stub. The second antenna stub and the first antenna stub are separated by the slot. The second antenna stub has a third upper frame point;

[0023] The second antenna is electrically connected to the third upper frame point.

[0024] In a possible implementation, the second antenna radiates signals in a third frequency band through a mode other than the loop (loop antenna) mode.

[0025] In a possible implementation, the signals in the third frequency band are WiFi signals.

[0026] In a possible implementation, the length of the second antenna stub ranges from 9 mm to 11 mm.

[0027] On the other hand, embodiments of the present disclosure provide an electronic device, and the electronic device includes the antenna assembly as described in any one of the above.

[0028] In a possible implementation, the antenna assembly is disposed on the top frame of the electronic device.

[0029] The technical solutions provided by the embodiments of the present disclosure at least include the following beneficial effects:

[0030] Embodiments of the present disclosure provide an antenna assembly. The NFC circuit and the first antenna are both electrically connected to the first antenna stub. To ensure the performance of NFC, it is necessary to ensure the length of the first antenna stub. The antenna assembly solution provided by the present disclosure adjusts the position of the Smith chart of the first antenna through a matching circuit, ensuring that the first antenna still achieves good antenna performance at a longer length.

[0031] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1It is a schematic structural diagram of an antenna assembly shown in an embodiment of the present disclosure;

[0034] Figure 2 It is a circuit topology diagram of a first antenna shown in an embodiment of the present disclosure;

[0035] Figure 3 It is a simulation diagram of an antenna assembly shown in an embodiment of the present disclosure;

[0036] Figure 4 It is a simulation diagram of an antenna assembly shown in an embodiment of the present disclosure;

[0037] Figure 5 It is a simulation diagram of an antenna assembly shown in an embodiment of the present disclosure;

[0038] Figure 6 It is a simulation diagram of an antenna assembly shown in an embodiment of the present disclosure.

[0039] Legend Explanation

[0040] 1. Frame; 2. NFC circuit; 3. First antenna; 4. Second antenna; 5. Ground plane;

[0041] 11. Discontinuity slot; 12. First grounding point; 13. First antenna stub; 14. Second grounding point; 15. Second antenna stub;

[0042] 131. First upper frame point; 132. Second upper frame point;

[0043] 151. Third upper frame point;

[0044] 31. Matching circuit; 32. RF unit;

[0045] L1. First inductor; L2. Second inductor; C1. First capacitor; C2. Second capacitor. Detailed Implementation Manner

[0046] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0047] The embodiments of the present disclosure provide an antenna assembly, which can be any reasonable device. For example, it can be a mobile phone, a tablet computer, a laptop computer, etc. The embodiments of the present disclosure do not limit this.

[0048] The antenna assembly includes a frame 1. For example, when the antenna assembly is the antenna assembly in a mobile phone, the frame 1 is the side frame of the middle frame of the mobile phone.

[0049] The frame 1 may have a ring structure, for example, a rectangular ring structure, or a circular ring structure, etc. The embodiment of the present disclosure does not limit the specific shape of the frame 1.

[0050] The material of the frame 1 can be any reasonable conductive metal material, which is not limited in the embodiment of the present disclosure.

[0051] The frame 1 has a break 11 and a first grounding point 12. The ring structure of the frame 1 is broken at the break 11. The first grounding point 12 is grounded, so that the position where the first grounding point 12 is set on the frame 1 is grounded.

[0052] The portion of the frame 1 located between the break 11 and the first grounding point 12 forms a first antenna branch 13. The break 11 and the first grounding point 12 separate the two ends of the first antenna branch 13 from the other parts of the frame 1 (other parts of the frame 1 except the first antenna branch 13) to prevent the antenna set on other parts of the frame 1 from affecting the signal transmission of the first antenna branch 13, thereby enhancing the signal strength of the antenna set on the first antenna branch 13.

[0053] In the embodiment of the present disclosure, the length of the break 11 can range from 1 mm to 2 mm. Of course, it can also be other lengths and can be set according to the actual structure and size of the frame 1. The embodiment of the present disclosure does not make any specific limitations on this.

[0054] like Figure 1 As shown, the upper frame length m1 of the first upper frame 11 is the distance between the end of the first antenna branch 13 close to the break 11 and the end of the first grounding point 12 connected to the first antenna branch 13 .

[0055] The first grounding point 12 may be any reasonable structure for partitioning. For example, the first grounding point 12 may be a rib, which is grounded to achieve partitioning. Alternatively, it may be a spring or circuit grounding, etc. The embodiments of the present disclosure are not limited to this.

[0056] The shape and size of the first grounding point 12 may be set according to the space arrangement and requirements in the electronic device, and the embodiment of the present disclosure does not limit this.

[0057] In one possible implementation, in addition to the above-mentioned provision of the break 11 and the first grounding point 12 at both ends of the first antenna branch 13, the partition setting may also be that both ends of the first antenna branch 13 are separated from the other parts of the frame 1 by a break, or a grounding point may be provided at each end of the first antenna branch 13 to separate the first antenna branch 13 from the other parts of the frame 1, and so on.

[0058] In the embodiments of the present disclosure, the structure for partitioning the first upper frame 11 can be any of the above, and can be selectively set according to the overall performance of the antenna. The embodiments of the present disclosure do not limit this.

[0059] In a possible implementation, the slit 11 can be filled with plastic to support the frame 1 and isolate the signals on both sides of the slit 11 from the frame 1, thereby improving the transmission performance of the antenna signal.

[0060] The first antenna stub 13 has a first upper frame point 131 and a second upper frame point 132. The first upper frame point 131 is located on the side of the second upper frame point 132 closer to the slit 11, that is, the first upper frame point 131 is closer to the slit 11, and the second upper frame point 132 is closer to the first ground point 12.

[0061] The antenna assembly further includes an NFC circuit 2 and a first antenna 3. The NFC circuit 2 is electrically connected to the first upper frame point 131.

[0062] The first antenna 3 includes a matching circuit 31 and a radio frequency unit 32. Both the NFC circuit 2 and the first antenna 3 can send information outward through the first antenna stub 13, and can also receive information sent from the outside through the first antenna stub 13.

[0063] Among them, the matching circuit 31 is electrically connected to the second upper frame point 132 and the radio frequency unit 32 respectively. The radio frequency unit 32 is used to send radio frequency signals to the matching circuit 31, and the matching circuit 31 is used to adjust the circular diagram position of the first antenna 3 to the target matching point so that the first antenna 3 can achieve better antenna performance.

[0064] Among them, the target matching point can be near 50 ohms in the Smith chart. For example, the target matching point can be any value from 45 ohms to 55 ohms, and it can be set according to actual needs. The embodiments of the present disclosure do not specifically limit this.

[0065] In a possible implementation, the antenna assembly may further include a main board, and both the NFC circuit 2 and the first antenna 3 can be located on the main board.

[0066] In a possible implementation, the antenna assembly may include a main board and a flexible circuit board. The NFC circuit 2 and the first antenna 3 can be located on the flexible circuit board and connected to the main board through the flexible circuit board.

[0067] In a possible implementation, the antenna assembly may include a main board and a flexible circuit board. The NFC circuit 2 can be located on the flexible circuit board and connected to the main board through the flexible circuit board, and the first antenna 3 can be directly located on the main board. Alternatively, the NFC circuit 2 is located on the main board, the first antenna 3 is located on the flexible circuit board, and is connected to the main board through the flexible circuit board.

[0068] The specific setting manner of the NFC circuit 2 and the first antenna 3 can be any of the above structures, or it can also be any other reasonable structure. The embodiments of the present disclosure do not limit this.

[0069] With the above setting, the NFC circuit 2 and the first antenna 3 share the first antenna stub 13, so there is no need to set up an independent upper frame for the NFC circuit 2, and there is no need to sacrifice the upper frame length of other antennas. While realizing the NFC upper frame, the performance of other antennas is also guaranteed, and even the performance of other antennas may be improved.

[0070] Moreover, for the antenna assembly provided by the embodiments of the present disclosure, both the NFC circuit 2 and the first antenna 3 are electrically connected to the first antenna stub 13. To ensure the performance of NFC, it is necessary to ensure the length of the first antenna stub 13. And the antenna assembly solution provided by the present disclosure adjusts the Smith chart position of the first antenna 3 through the matching circuit 31, ensuring that the first antenna 3 can still achieve good antenna performance at a relatively long length.

[0071] In the embodiments of the present disclosure, the frame 1 of the antenna assembly can have multiple antenna stubs, and each antenna stub can be connected to one or more antennas. The first antenna stub 13 and the first antenna 3 can be any of them, and the settings of the antenna stub 13 and the first antenna 3 can be comprehensively considered according to the functions of all the antennas included in the antenna assembly.

[0072] In a possible implementation manner, the first antenna stub 13 can be any antenna stub that meets the stub length requirement for NFC performance realization. Correspondingly, the first antenna 3 can be an antenna that can still have good signal transmission performance through the matching circuit 31 while the stub length of the first antenna stub 13 meets the stub length requirement for NFC performance.

[0073] In a possible implementation manner, the first antenna 3 radiates signals in the first frequency band through the IFA mode, and the first antenna 3 can also radiate signals in the second frequency band through the monofole mode. The IFA mode and the monofole mode enable the first antenna 3 to achieve good antenna performance.

[0074] In a possible implementation manner, the signals in the first frequency band can be GPS L5 signals, and the signals in the second frequency band can be GPS L1 signals.

[0075] Among them, the frequency band of the GPS L1 signal is about 1.575 GHz (gigahertz), and the frequency band of the GPS L5 signal is about 1.175 GHz.

[0076] Correspondingly, the stub length m1 of the first antenna stub 13 can be a first preset value. While ensuring the stub length requirement of the NFC circuit 2, the first preset value can also enable the first antenna 3 to radiate GPS L1 signals in the IFA mode and radiate GPS L5 signals in the monopole mode, thereby improving the antenna performance of the first antenna 3.

[0077] In a possible implementation manner, the range of the first preset value in the embodiments of the present disclosure can be 25 mm to 27 mm. For example, the first preset value can be 26 mm, which meets the stub length requirement of the NFC circuit 2. Moreover, through antenna simulation, it can be determined that the stub length of the first antenna stub 13 within this range can enable the first antenna 3 to radiate GPS L1 signals in the IFA mode and radiate GPS L5 signals in the monopole mode.

[0078] In a possible implementation manner, the first antenna 3 can include a matching circuit 31 and a radio frequency unit 32.

[0079] Among them, the matching circuit 31 can be a circuit that ensures the first antenna 3 has good antenna performance.

[0080] In a possible implementation manner, the matching circuit 31 includes a first matching module and a second matching module. Among them, the first matching module is used to adjust the Smith chart position of the first antenna 3 to the first quadrant, and the second matching module is used to adjust the Smith chart position of the first antenna 3 to the target matching point. Specifically, the first matching module first adjusts the Smith chart position of the first antenna 3 to a position close to the target matching point in the first quadrant, and the second matching module can then adjust the Smith chart position of the first antenna 3 from the position in the first quadrant to the target matching point, thereby ensuring the good performance of the first antenna 3.

[0081] In a possible implementation manner, the first matching module can have a first connection end, a second connection end, and a third connection end. The first connection end is grounded, and the second connection end is electrically connected to the second upper frame point 132. The second matching module has a fourth connection end, a fifth connection end, and a sixth connection end. The fourth connection end is electrically connected to the third connection end, the fifth connection end is grounded, and the sixth connection end is electrically connected to the radio frequency unit 32.

[0082] In this way, a connection structure among the first matching module, the second matching module, the second upper frame point 132, and the radio frequency unit 32 is provided, thereby realizing the matching function of the matching circuit 31.

[0083] In a possible implementation manner, as Figure 2As shown, the first matching module may include a first inductor L1 and a second inductor L2, and the second matching module may include a first capacitor C1 and a second capacitor C2. It can be understood that Figure 2 the specific circuit of the radio frequency unit 32 is not shown in

[0084] One end of the first inductor L1 is grounded, the other end of the first inductor L1 is electrically connected to the second upper frame point 132, one end of the second inductor L2 is electrically connected to the second upper frame point 132, the other end of the second inductor L2 is electrically connected to one end of the first capacitor C1, the other end of the first capacitor C1 is electrically connected to the radio frequency unit 32, one end of the second capacitor C2 is electrically connected to the radio frequency unit 32, and the other end of the second capacitor C2 is grounded.

[0085] In the above matching circuit 31, through the first inductor L1 and the second inductor L2, the position of the Smith chart of the first antenna 3 can be rotated to the first quadrant, and through the first capacitor C1 and the second capacitor C3, the position of the Smith chart can be rotated to the target matching point, thereby realizing the matching of the first antenna 3.

[0086] For the setting of the inductance values of the above-mentioned first inductor L1 and second inductor L2, and for the setting of the capacitance values of the first capacitor C1 and second capacitor C2, they can be set according to requirements and actual simulation results. In a possible implementation, the value range of the first inductor L1 is 25 nH to 35 nH, the value range of the second inductor L2 is 7 nH to 15 nH, the value range of the first capacitor C1 is 0.8 pF to 1.2 pF, and the value range of the second capacitor C2 is 2.5 pF to 4.5 pF. Of course, other reasonable values can also be used, and the embodiments of the present disclosure do not limit this.

[0087] The above settings can achieve high performance of the first antenna 3 while ensuring that the first antenna stub 13 meets the requirements of the NFC circuit 2 for the stub length.

[0088] In a possible implementation, as Figure 1 shown, the antenna assembly may further include a second antenna 4.

[0089] The frame 1 further has a second grounding point 14, the second grounding point 14 is grounded, and the part of the frame 1 between the slit 11 and the second grounding point 14 forms a second antenna stub 15, and the second antenna stub 15 is separated from the first antenna stub 13 by the slit 11.

[0090] The second antenna stub 15 has a third upper frame point 151, and the second antenna 4 is electrically connected to the third upper frame point 151. The second antenna 4 can send messages outward through the second antenna stub 15, or receive messages from the outside through the second antenna stub 15.

[0091] In this way, the break seam 11 and the second grounding point 14 can be arranged to isolate the two ends of the second antenna stub 15 from the first antenna stub 13 and other parts of the frame 1, avoiding interference between the first antenna 3 and NFC on the first antenna stub 13 and the second antenna 4 on the second antenna stub 15, and also avoiding interference between the antenna arranged on other parts of the frame 1 and the second antenna 4 on the second antenna stub 15, thereby enhancing the signal strength and antenna performance of the second antenna 4 on the second antenna stub 15.

[0092] The second grounding point 14 can be any reasonable structure for isolation. For example, the second grounding point 14 can be a rib, and the rib is grounded to achieve isolation. Alternatively, it can also be a shrapnel or circuit grounding, etc. The embodiments of the present disclosure do not limit this.

[0093] It can be understood that Figure 1 In addition to the first antenna stub 13 and the second antenna stub 15, the frame 1 shown in Figure 1 does not show other antenna stubs.

[0094] When the frame 1 of the antenna assembly has a rectangular ring structure, the first antenna stub 13 and the second antenna stub 15 can be located on the same side of the frame 1.

[0095] In a possible implementation, the first antenna stub 13 and the second antenna stub 15 can both be located at the top end of the frame 1, which is the top end of the electronic device when the user uses the electronic device. In this way, when the first antenna stub 13 and the second antenna stub 15 are located on the side or bottom end of the frame 1, the user's palm or other objects blocking the side or bottom end of the frame 1, resulting in the blocking of the first antenna stub 13 and the second antenna stub 15, is avoided, ensuring the high performance of the first antenna stub 13 and the second antenna stub 15.

[0096] The second grounding point 14 is connected to the end of the second antenna stub 15 far from the first antenna stub 13, and the second grounding point 14 is grounded, that is, the second grounding point 14 can be electrically connected to the grounding end on the main board.

[0097] As Figure 1 shown, the upper frame length m2 of the second antenna stub 15 is the distance between the end of the second antenna stub 15 close to the break seam 11 and the end of the second grounding point 14 connected to the second antenna stub 15.

[0098] For the shape and size of the second grounding point 14, it can be set according to the space setting and requirements in the electronic device. The embodiments of the present disclosure do not limit this.

[0099] In a possible implementation, asFigure 1 As shown, the antenna assembly may further include a ground plane 5.

[0100] The frame 1 has an annular structure. The ground plane 5 is located inside the frame 1 and is connected to the frame 1. In a possible implementation, two opposite sides of the ground plane 5 may be connected to two opposite side edges of the frame 1.

[0101] The ground plane 5 is grounded, that is, the ground plane 5 is electrically connected to the ground terminal on the main board. In this way, the first ground point 12 and the second ground point 14 are electrically connected to the ground plane 5, and thus the first ground point 14 and the second ground point 15 can be grounded.

[0102] In a possible implementation, the second antenna 4 may radiate signals in the third frequency band through other modes except the loop mode.

[0103] In a possible implementation, the signal in the third frequency band may be a WiFi signal. In this way, both the second antenna 4 and the first antenna 3 are arranged on the same side of the frame 1, and this side is set as the top end of the antenna assembly, which can ensure high performance of the WiFi signal and the GPS signal.

[0104] The second antenna 4 may be any one of the antennas corresponding to the WiFi signal. For example, the second antenna 4 may be an antenna corresponding to the WiFi 2.4 GHz band, or the second antenna 4 may be an antenna corresponding to the WiFi 6e GHz band, or the second antenna 4 may be an antenna corresponding to the WiFi 5G GHz band, or the second antenna 4 may be an arbitrary combined antenna of the WiFi antenna in the WiFi 2.4 GHz band, the WiFi antenna in the WiFi 6e GHz band, and the WiFi antenna in the WiFi 5G GHz band.

[0105] For example, the second antenna 4 may be a combined antenna including a WiFi antenna in the WiFi 2.4 GHz band and a WiFi antenna in the WiFi 6e GHz band, or a combined antenna including a WiFi antenna in the WiFi 2.4 GHz band and a WiFi antenna in the WiFi 5G GHz band.

[0106] Among them, the WiFi 2.4 GHz band is 2.41 GHz to 2.49 GHz, the WiFi 5G GHz band is about 5 GHz, and the WiFi 6e GHz band is 5.1 GHz to 7.25 GHz.

[0107] The branch length m2 of the second antenna stub 15 may be a second preset value, and this second preset value may make the mode of the WiFi antenna not the loop mode with relatively low performance, so as to avoid encountering an efficiency pit.

[0108] In a possible implementation, the value range of the second preset value can be 9 mm to 11 mm. For example, the second preset value can be 10 mm. Simulation experiments prove that it can prevent the mode of the WiFi antenna from being the relatively low-performance loop mode to avoid encountering an efficiency pit.

[0109] In a possible implementation, the NFC circuit 2 can be located on the side of the first antenna 3 close to the slot 13, so that the effective length corresponding to the NFC circuit 2 (the distance between the first upper frame point 131 where the NFC circuit 2 is connected to the first antenna stub 13 and the first ground point 12) is relatively long, thereby improving the signal transmission performance of the NFC device.

[0110] In a possible implementation, the NFC circuit 2 can be located at the end of the first antenna stub 13 close to the slot 11. In this way, the effective length corresponding to the NFC circuit 2 can be increased as much as possible, thereby improving the signal transmission performance of the NFC device.

[0111] In the embodiments of the present disclosure, antenna simulation is performed on an antenna assembly having the following characteristics, and a simulation diagram as Figures 3 to 6 can be obtained:

[0112] The first antenna 3 is a combined antenna including a GPS antenna in the L1 band and a GPS antenna in the L5 band. The second antenna 4 is a combined antenna including a WiFi antenna in the WiFi 2.4 band and a WiFi antenna in the WiFi 6e band. The first preset value is 26 mm, the second preset value is 10 mm. A slot 11 is provided between the first antenna stub 13 and the second antenna stub 15. A first ground point 12 is provided at one end of the first antenna stub 13 far from the second antenna stub 15. A second ground point 14 is provided at one end of the second antenna stub 15 far from the first antenna stub 13. The matching circuit 31 in the first antenna 3 is a matching circuit as Figure 2 shown.

[0113] It can be seen from Figure 3 , Figure 4 and Figure 5 that the GPS antennas in the L1 band and the L5 band have good performance, and the mode of the GPS antenna in the L1 band is the IFA mode, and the mode of the GPS antenna in the L5 band is the monopole mode.

[0114] It can be seen from Figure 6 that the efficiency pits of the WiFi antenna in the WiFi 2.4 band and the WiFi antenna in the WiFi 6e band are respectively near 4.4 GHz and 7 GHz, avoiding the common frequency bands of 5.1 GHz to 6.5 GHz in the WiFi 6e band, thereby improving the performance of the second antenna 4.

[0115] An embodiment of the present disclosure further provides an electronic device, which includes the antenna assembly described in any one of the above. In this way, since the first antenna branch 13 is relatively long, the performance of NFC is ensured. At the same time, the provided matching circuit 31 can also adjust the first antenna 3 so that it still has good antenna performance even with the relatively long first antenna branch 13.

[0116] In a possible implementation, the antenna assembly is disposed on the top frame of the electronic device. In this way, when the first antenna branch 13 and the second antenna branch 15 are located on the side frame or the bottom frame of the electronic device, the user's palm or other objects are prevented from blocking the first antenna branch 13 and the second antenna branch 15, ensuring the high performance of the first antenna branch 13 and the second antenna branch 15.

[0117] The technical solutions provided by the embodiments of the present disclosure at least include the following beneficial effects:

[0118] For the antenna assembly provided by the embodiment of the present disclosure, both the NFC circuit 2 and the first antenna 3 are electrically connected to the first antenna branch 13. To ensure the performance of NFC, it is necessary to ensure the length of the first antenna branch 13. The antenna assembly solution provided by the present disclosure adjusts the Smith chart position of the first antenna 3 through the matching circuit 31, ensuring that the first antenna 3 can still achieve good antenna performance at a relatively long length.

[0119] The meaning of the term "at least one" in the present disclosure refers to one or more, and the meaning of the term "a plurality" in the present disclosure refers to two or more.

[0120] The terms "first" and "second" and the like in the present disclosure are used to distinguish the same items or similar items with basically the same functions. It should be understood that there is no logical or temporal dependence between "first" and "second", nor are the quantity and execution order limited. It should also be understood that although the following description uses the terms "first" and "second" and the like to describe various structures, these structures should not be limited by the terms. These terms are only used to distinguish one structure from another. For example, without departing from the scope of various examples, the first rotor may be referred to as the second rotor, and similarly, the second rotor may be referred to as the first rotor.

[0121] The above are only optional embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: a frame (1), an NFC circuit (2), and a first antenna (3); The frame (1) has a slit (11) and a first grounding point (12). A portion of the frame (1) between the slit (11) and the first grounding point (12) forms a first antenna stub (13). The first antenna stub (13) has a first upper frame point (131) and a second upper frame point (132). The first upper frame point (131) is located on the side of the second upper frame point (132) closer to the slit (11); The NFC circuit (2) is electrically connected to the first upper frame point (131); The first antenna (3) includes a matching circuit (31) and a radio frequency unit (32). The matching circuit (31) is electrically connected to the second upper frame point (132) and the radio frequency unit (32) respectively. The matching circuit (31) is used to adjust the Smith chart position of the first antenna (3) to a target matching point.

2. The antenna assembly according to claim 1, characterized in that, The matching circuit (31) includes a first matching module and a second matching module; The first matching module is used to adjust the Smith chart position to the first quadrant; The second matching module is used to adjust the Smith chart position to the target matching point.

3. The antenna assembly according to claim 1, wherein The first matching module has a first connection end, a second connection end, and a third connection end. The first connection end is grounded, and the second connection end is electrically connected to the second upper frame point (132); The second matching module has a fourth connection end, a fifth connection end, and a sixth connection end. The fourth connection end is electrically connected to the third connection end, the fifth connection end is grounded, and the sixth connection end is electrically connected to the radio frequency unit (32).

4. The antenna assembly according to claim 3, wherein The first matching module includes a first inductor (L1) and a second inductor (L2). The second matching module includes a first capacitor (C1) and a second capacitor (C2); One end of the first inductor (L1) is grounded, the other end of the first inductor (L1) is electrically connected to the second upper frame point (132). One end of the second inductor (L2) is electrically connected to the second upper frame point (132), the other end of the second inductor (L2) is electrically connected to one end of the first capacitor (C1). The other end of the first capacitor (C1) is electrically connected to the radio frequency unit (32). One end of the second capacitor (C2) is electrically connected to the radio frequency unit (32), and the other end of the second capacitor (C2) is grounded.

5. The antenna assembly according to claim 4, characterized in that, The value range of the first inductor (L1) is 25 nH to 35 nH, the value range of the second inductor (L2) is 7 nH to 15 nH, the value range of the first capacitor (C1) is 0.8 pF to 1.2 pF, and the value range of the second capacitor (C2) is 2.5 pF to 4.5 pF.

6. The antenna assembly according to claim 1, wherein The first antenna (3) radiates signals in the first frequency band through the IFA mode, and the first antenna (3) radiates signals in the second frequency band through the monopole mode.

7. The antenna assembly according to claim 6, wherein The signals in the first frequency band are GPS L5 signals, and the signals in the second frequency band are GPS L1 signals.

8. The antenna assembly according to claim 7, wherein The length of the stub of the first antenna stub (13) ranges from 25 mm to 27 mm.

9. The antenna assembly according to any one of claims 1-8, characterized in that, The antenna assembly further includes a second antenna (4); The frame (1) further has a second ground point (14). The portion of the frame (1) between the slit (11) and the second ground point (14) forms a second antenna stub (15). The second antenna stub (15) is spaced from the first antenna stub (13) by the slit (11). The second antenna stub (15) has a third upper frame point (151); The second antenna (4) is electrically connected to the third upper frame point (151).

10. The antenna assembly according to claim 9, wherein, The second antenna (4) radiates signals in a third frequency band through modes other than the loop mode.

11. The antenna assembly according to claim 10, wherein, The signals in the third frequency band are WiFi signals.

12. The antenna assembly according to claim 11, wherein The length of the stub of the second antenna stub (15) ranges from 9 mm to 11 mm.

13. An electronic device, characterized in that, The electronic device includes the antenna assembly according to any one of claims 1-12.

14. The electronic device according to claim 13, characterized in that, The antenna assembly is disposed on the top frame of the electronic device.

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