Middle frame assembly and electronic equipment

Abstract

The utility model relates to a middle frame assembly and electronic equipment, and the middle frame assembly comprises a middle frame and a first compensation circuit, the middle frame comprises a supporting part and a frame surrounding the supporting part, the frame is provided with a breaking joint, the frame located at one side of the breaking joint forms a first antenna radiator, and the first antenna radiator has a plurality of working frequency bands; the first end of the first compensation circuit is grounded, the second end of the first compensation circuit is connected with the first antenna radiator, and the first compensation circuit is configured to be used for improving the radiation efficiency of a target frequency band in the multiple working frequency bands of the first antenna radiator. Therefore, the antenna performance of the electronic equipment can be improved, the mode of improving the radiation performance of the target frequency band by changing the size of the frame structure is replaced, the production period of the electronic equipment is shortened, and the production efficiency of the electronic equipment is effectively improved. In addition, due to the arrangement of the first compensation circuit, the antenna bandwidth of the electronic equipment can be widened, and the antenna performance of the electronic equipment is further improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electronic devices, and in particular, to a middle frame assembly and an electronic device. BACKGROUND

[0002] To save the internal space of the electronic device, more and more electronic devices use metal frames as antenna radiators. However, the electronic devices in the related art have the problem of poor antenna performance. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides a middle frame assembly and an electronic device.

[0004] According to a first aspect of the present disclosure, a middle frame assembly is provided, the middle frame assembly comprising a middle frame, the middle frame comprising a support portion and a frame portion surrounding the support portion, a break joint being provided on the frame portion, the frame portion on one side of the break joint constituting a first antenna radiator, the first antenna radiator having a plurality of working frequency bands; a first compensation circuit, a first end of the first compensation circuit being grounded, a second end of the first compensation circuit being connected with the first antenna radiator, the first compensation circuit being configured to improve the radiation efficiency of a target frequency band in the plurality of working frequency bands of the first antenna radiator.

[0005] In some embodiments of the present disclosure, the first compensation circuit comprises: a first inductor, a first end of the first inductor being connected with the first antenna radiator, a second end of the first inductor being grounded; and a first capacitor, the first capacitor being connected in parallel with the first inductor.

[0006] In some embodiments of the present disclosure, a first feeding point is provided on the first antenna radiator, and the second end of the first compensation circuit is connected between the first feeding point and a first end portion of the first antenna radiator facing the break joint.

[0007] In some embodiments of the present disclosure, the connection position between the second end of the first compensation circuit and the first antenna radiator is located at a preset distance from the first end portion, and the preset distance comprises 1mm to 2mm.

[0008] In some embodiments of the present disclosure, a first grounding point is provided on the first antenna radiator, and the first grounding point is located on a side of the first feeding point away from the first end portion.

[0009] In some embodiments of the present disclosure, a first rib portion protruding in a first direction is provided on the first antenna radiator, and the first rib portion constitutes the first feeding point; and / or, a second rib portion protruding in the first direction is provided on the first antenna radiator, and the second rib portion constitutes the first grounding point.

[0010] In some embodiments of the present disclosure, the middle frame assembly further comprises a connecting piece connected to the first antenna radiator, and a second end of the first compensation circuit is connected to the connecting piece.

[0011] In some embodiments of the present disclosure, a third rib protruding in a first direction is arranged on the first antenna radiator, and the third rib constitutes the connecting piece.

[0012] In some embodiments of the present disclosure, the bezel on the other side of the break constitutes a second antenna radiator, the second antenna radiator is provided with a second grounding point and a second feeding point, and the second feeding point is located between a second end of the second antenna radiator facing the break and the second end and the second grounding point.

[0013] In some embodiments of the present disclosure, the second antenna radiator has a plurality of working frequency bands, and the middle frame assembly further comprises a second compensation circuit, a first end of the second compensation circuit is grounded, a second end of the second compensation circuit is connected to the second antenna radiator and located between the second end and the second feeding point, and the second compensation circuit is configured to improve the radiation efficiency of a target frequency band in the plurality of working frequency bands of the second antenna radiator.

[0014] In some embodiments of the present disclosure, the second compensation circuit comprises a second inductor, a first end of the second inductor is connected to the second antenna radiator, and a second end of the second inductor is grounded; and a second capacitor connected in parallel to the second inductor.

[0015] In some embodiments of the present disclosure, the first antenna radiator and the second antenna radiator together can cover a radiation frequency range of 1000Mhz to 6000Mhz.

[0016] According to a second aspect of the present disclosure, an electronic device is provided, which comprises the middle frame assembly according to the first aspect.

[0017] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects:

[0018] The middle frame assembly provided by the present disclosure is composed of the first antenna radiator of the side frame located at one side of the gap, which has multiple working frequency bands. The first compensation circuit is provided, the first end of the first compensation circuit is grounded, and the second end of the first compensation circuit is connected with the first antenna radiator, so that the first compensation circuit can improve the radiation performance of the target frequency band in the multiple working frequency bands of the first antenna radiator. In this way, not only the antenna performance of the electronic device can be improved, but also the production cycle of the electronic device can be shortened, thereby effectively improving the production efficiency of the electronic device. In addition, the setting of the first compensation circuit can widen the antenna bandwidth of the electronic device, thereby further improving the antenna performance of the electronic device.

[0019] 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 DRAWINGS

[0020] The accompanying drawings incorporated in the specification and constituting a part hereof illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the specification.

[0021] Figure 1 is a structural schematic diagram of a middle frame assembly according to an exemplary embodiment;

[0022] Figure 2 is a structural schematic diagram of a middle frame assembly according to another exemplary embodiment;

[0023] Figure 3 is a structural schematic diagram of a middle frame assembly according to still another exemplary embodiment;

[0024] Figure 4 is a radiation efficiency diagram of an electronic device according to an exemplary embodiment;

[0025] Figure 5 is an S parameter diagram of an electronic device according to an exemplary embodiment;

[0026] Figure 6 is a radiation efficiency comparison diagram of an electronic device under different device parameter values of a first compensation circuit according to an exemplary embodiment.

[0027] In the drawings:

[0028] 1 - middle frame assembly; 11 - bezel; 111 - break; 112 - first antenna radiator; 1121 - first end; 113 - second antenna radiator; 1131 - second end; 114 - first muscle position; 115 - second muscle position; 116 - third muscle position; 117 - fourth muscle position; 118 - fifth muscle position; 12 - first feeding point; 13 - first grounding point; 14 - second feeding point; 15 - second grounding point; 16 - circuit board assembly; 17 - first compensation circuit; 171 - first inductor; 172 - first capacitor. DETAILED DESCRIPTION

[0029] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, unless otherwise indicated, like numbers in the different drawings represent similar or analogous elements. The following exemplary embodiments described in the following description are not meant to be an all-inclusive description of all aspects of the disclosure. Rather, they are merely examples of apparatus and methods in accordance with some aspects of the disclosure as detailed in the appended claims.

[0030] To save the internal space of electronic devices, more and more electronic devices use metal bezels as antenna radiators. One antenna radiator can be used as one working frequency band, or one antenna radiator can have multiple working frequency bands. However, the electronic devices in the related art have poor antenna performance. For example, in the related art, when a bezel is used to form an antenna radiator with multiple working frequency bands, the production process error can easily cause the radiation efficiency of at least one of the working frequency bands to be low, which affects the antenna performance of the electronic device. If the radiation efficiency of the required working frequency band needs to be improved, the structure size of the middle frame needs to be re-produced and processed, which will cause the production cycle of the electronic device to be lengthened.

[0031] To solve the above technical problems, the present disclosure provides a middle frame assembly. A first antenna radiator formed by a bezel on one side of a break has multiple working frequency bands. A first compensation circuit is provided. A first end of the first compensation circuit is grounded, and a second end of the first compensation circuit is connected to the first antenna radiator, so that the first compensation circuit can improve the radiation performance of a target frequency band in the multiple working frequency bands of the first antenna radiator. In this way, not only the antenna performance of the electronic device can be improved, but also the production cycle of the electronic device can be shortened, thereby effectively improving the production efficiency of the electronic device. In addition, the provision of the first compensation circuit can widen the antenna bandwidth of the electronic device, thereby further improving the antenna performance of the electronic device.

[0032] An exemplary embodiment of the present disclosure provides a middle frame assembly, as shown in Figure 1 and Figure 2As shown, the middle frame assembly 1 comprises a middle frame and a first compensation circuit 17. The middle frame comprises a support portion and a bezel 11 surrounding the support portion. The bezel 11 is provided with a break 111, and the bezel 11 on one side of the break 111 constitutes a first antenna radiator 112. The first antenna radiator 112 has a plurality of working frequency bands, such as GPS, WiFi 2.4, N78, WiFi 5G, etc.

[0033] The first compensation circuit 17 is grounded at a first end, and a second end of the first compensation circuit 17 is connected to the first antenna radiator 112. The first compensation circuit 17 is configured to improve the radiation efficiency of a target frequency band in the plurality of working frequency bands of the first antenna radiator 112. For example, the first compensation circuit 17 can be a resonant circuit or other active device with capacitance and inductance, which is not limited herein. The target frequency band can be one working frequency band or a plurality of working frequency bands.

[0034] With such a setting form, on the one hand, the first compensation circuit 17 improves the radiation efficiency of the target frequency band in the plurality of working frequency bands of the first antenna radiator 112, which can effectively improve the antenna performance of the electronic device.

[0035] On the other hand, by adjusting the device parameter value in the first compensation circuit 17 to adjust the radiation efficiency of the target frequency band, such as adjusting the values of capacitance and inductance, instead of changing the structure size of the bezel 11 to improve the radiation performance of the target frequency band, it is also beneficial to shorten the production cycle of the electronic device, thereby effectively improving the production efficiency of the electronic device. Figure 6 It can be seen that by adjusting the device parameter value of the first compensation circuit 17 to different values, the fluctuation of the radiation frequency of the electronic device.

[0036] In addition, the setting of the first compensation circuit 17 can further widen the antenna bandwidth of the electronic device, thereby further improving the antenna performance of the electronic device.

[0037] In combination Figure 3 In an embodiment, the first compensation circuit 17 comprises a first inductor 171 and a first capacitor 172. The first inductor 171 is connected to the first antenna radiator 112 at a first end, and grounded at a second end. The first capacitor 172 is connected in parallel with the first inductor 171. In this way, the first compensation circuit 17 can improve the radiation efficiency of the target frequency band. With such a setting form, the structure of the first compensation circuit 17 is simple and easy to set.

[0038] In combination Figure 1 and Figure 2In an embodiment, the first antenna radiator 112 is provided with the first feeding point 12, and the second end of the first compensation circuit 17 is connected between the first feeding point 12 and the first end portion 1121 of the first antenna radiator 112 facing the break 111. This facilitates to improve the radiation efficiency of the target frequency band in the multiple working frequency bands of the first antenna radiator 112, and facilitates to widen the antenna bandwidth of the electronic device, so that the electronic device has more working modes, thereby facilitating to improve the communication performance of the electronic device.

[0039] In an embodiment, the connection position between the second end of the first compensation circuit 17 and the first antenna radiator 112 is located at a preset distance from the first end portion 1121. The preset distance includes 1mm to 2mm. In this way, the target frequency band in the multiple working frequency bands of the first antenna radiator 112 can be effectively improved, thereby further improving the antenna performance of the electronic device.

[0040] In combination with Figure 1 and Figure 2 In an embodiment, the first antenna radiator 112 is provided with the first grounding point 13, and the first grounding point 13 is located on the side of the first feeding point 12 away from the first end portion 1121. In this way, the first antenna radiator 112 has more working modes, for example, the first grounding point 13 to the first end portion 1121 can constitute a first working mode, the first feeding point 12 to the first end portion 1121 can constitute a second working mode, the first grounding point 13 to the first feeding point 12 can constitute a third working mode, and the first feeding point 12 to the connection position between the second end of the first compensation circuit 17 and the first antenna radiator 112 can constitute a fourth working mode. Each working mode has different working frequency bands, which further widens the antenna bandwidth of the electronic device, and further improves the communication performance of the electronic device.

[0041] In combination with Figure 1 In an embodiment, the middle frame assembly 1 further includes a circuit board assembly 16 arranged on the support portion. The first grounding point 13 is electrically connected to the circuit board assembly 16 to realize grounding. The first feeding point 12 is electrically connected to the circuit board assembly 16 to realize feeding of the first antenna radiator 112. The first compensation circuit 17 is electrically connected to the circuit board assembly 16 to realize grounding of the first compensation circuit 17.

[0042] The first antenna radiator 112 is provided with a first rib position 114 protruding towards the first direction, and the first rib position 114 constitutes the first feeding point 12. In this way, the first feeding point 12 is simple to set and easy to connect with the circuit board assembly 16, and the structural strength of the first antenna radiator 112 is improved, thereby improving the reliability of the middle frame assembly 1. For example, the first feeding point 12 can be electrically connected with the circuit board assembly 16 through a first electrical connection part, for example, a spring sheet. It should be noted that the first direction refers to the direction of the first antenna radiator 112 towards the circuit board assembly 16.

[0043] In combination Figure 1 In another embodiment, the first antenna radiator 112 is provided with a second rib position 115 protruding towards the first direction, and the second rib position 115 constitutes the first grounding point 13. In this way, the first grounding point 13 is simple to set and easy to connect with the circuit board assembly 16, and the structural strength of the first antenna radiator 112 is improved, thereby improving the reliability of the middle frame assembly 1. For example, the second rib position 115 can be fastened to the circuit board assembly 16 through a conductive screw, and the electrical connection between the second rib position 115 and the circuit board assembly 16 can be realized through the conductive screw.

[0044] In combination Figure 1 In one embodiment, the middle frame assembly 1 further comprises a connecting piece connected with the first antenna radiator 112, and the second end of the first compensation circuit 17 is connected with the connecting piece. For example, the connecting piece can be a spring sheet, a rib position, or other metal structural parts. In this way, the connection between the second end of the first compensation circuit 17 and the first antenna radiator 112 is facilitated, thereby improving the production efficiency of the electronic device.

[0045] In combination Figure 1 In one embodiment, the first antenna radiator 112 is provided with a third rib position 116 protruding towards the first direction, and the third rib position 116 constitutes the connecting piece. For example, the third rib position 116 can be connected to the circuit board assembly 16 through a second electrical connection part, and grounded through the first compensation circuit 17, and the second electrical connection part can also be a spring sheet. In this way, on the one hand, the structure of the connecting piece is simple, facilitating production and processing while reducing the occupation of the internal space of the electronic device. On the other hand, the structural strength of the first antenna radiator 112 is improved, thereby further improving the reliability of the middle frame assembly 1.

[0046] In combination Figure 4In an embodiment, the frame 11 on the other side of the break 111 forms a second antenna radiator 113, and the second antenna radiator 113 is provided with a second grounding point 15 and a second feeding point 14, and the second feeding point 14 is located between the second end 1131 of the second antenna radiator 113 facing the break 111 and the second grounding point 15. With such a configuration, more working modes with different frequency bands can be constructed by the first antenna radiator 112 and the second antenna radiator 113. For example, the first grounding point 13 to the first end 1121 can form a first working mode, the first feeding point 12 to the first end 1121 can form a second working mode, the first grounding point 13 to the first feeding point 12 can form a third working mode, the second grounding point 15 to the second end 1131 can form a fourth working mode, the second feeding point 14 to the second end 1131 can form a fifth working mode, the second feeding point 14 to the second grounding point 15 can form a sixth working mode, the connection position between the second feeding point 14 and the second end of the first compensation circuit 17 and the first antenna radiator 112 can form a seventh working mode, the connection position between the second grounding point 15 and the second end of the first compensation circuit 17 and the first antenna radiator 112 can form an eighth working mode, and the connection position between the first feeding point 12 and the second end of the first compensation circuit 17 and the first antenna radiator 112 can form a fourth working mode. Each working mode has a different working frequency band, which further widens the antenna bandwidth of the electronic device and further improves the communication performance of the electronic device.

[0047] In an embodiment, the second antenna radiator 113 has multiple working frequency bands. The middle frame assembly 1 further includes a second compensation circuit, the first end of the second compensation circuit is grounded, the second end of the second compensation circuit is connected to the second antenna radiator 113 and located between the second end 1131 and the second feeding point 14, and the second compensation circuit is configured to improve the radiation efficiency of a target frequency band in the multiple working frequency bands of the second antenna radiator 113. For example, the second compensation circuit can be a resonant circuit or other active device with capacitance and inductance, which is not limited herein. The target frequency band can be one working frequency band or multiple working frequency bands.

[0048] With such a configuration, on the one hand, the second compensation circuit improves the radiation efficiency of the target frequency band in the multiple working frequency bands of the second antenna radiator 113, which effectively improves the antenna performance of the electronic device. On the other hand, instead of changing the structural size of the frame 11 to improve the radiation performance of the target frequency band, the second compensation circuit improves the radiation efficiency of the target frequency band, which is also beneficial to shorten the production cycle of the electronic device, thereby effectively improving the production efficiency of the electronic device. In addition, the second compensation circuit further widens the antenna bandwidth of the electronic device, so that the electronic device has more working modes, thereby further improving the antenna performance of the electronic device.

[0049] In this embodiment, the first antenna radiator 112 and the second antenna radiator 113 can construct more operating modes with different frequency bands, and then the first compensation circuit 17 and / or the second compensation circuit can be used to improve the radiation efficiency of the target frequency band in all operating frequency bands constructed by the first antenna radiator 112 and / or the second antenna radiator 113, and is not limited to only improving the radiation efficiency of the target frequency band in the multiple operating frequency bands of the first antenna radiator 112 or only improving the radiation efficiency of the target frequency band in the multiple operating frequency bands of the second antenna radiator 113.

[0050] In an embodiment, the connection position between the second end of the second compensation circuit and the second antenna radiator 113 is at a preset distance from the second end 1131, and the preset distance includes 1mm to 2mm. In this way, the target frequency band in the multiple operating frequency bands of the second antenna radiator 113 can be effectively improved, thereby further improving the antenna performance of the electronic device.

[0051] In an embodiment, the second compensation circuit includes a second inductor and a second capacitor. The first end of the second inductor is connected to the second antenna radiator 113, and the second end of the second inductor is grounded. The second capacitor is connected in parallel with the second inductor. In this way, the second compensation circuit can improve the radiation efficiency of the target frequency band. With such a setting form, the structure of the second compensation circuit is simple and easy to set.

[0052] In an embodiment, the fourth, fifth and sixth ribs 117, 118 and 119 are provided on the second antenna radiator 113 and protrude in the first direction. The fourth rib 117 constitutes the second feeding point 14, the fifth rib 118 constitutes the second grounding point 15, and the second end of the circuit of the second compensation circuit is connected to the sixth rib. In this way, on the one hand, the connection between the second compensation circuit and the second antenna radiator 113 is facilitated while reducing the occupation of the internal space of the electronic device. On the other hand, the above setting method can also improve the structural strength of the second antenna radiator 113, thereby further improving the reliability of the middle frame assembly 1.

[0053] In an embodiment, the first antenna radiator 112 and the second antenna radiator 113 jointly construct more modes and can cover a radiation frequency range of 1000Mhz to 6000Mhz, thereby widening the antenna bandwidth of the electronic device and effectively improving the communication performance of the electronic device. Figure 5 and Figure 1 As can be seen, on the basis of the first antenna radiator 112 and the second antenna radiator 113 constructing multiple operating modes, the electronic device provided with the first compensation circuit 17 has better antenna performance.

[0054] An example embodiment of the present disclosure provides an electronic device, which can be a mobile device such as a mobile phone (e.g., a foldable mobile phone), a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), or a non-mobile device such as a personal computer (PC), a television (TV), a cash register, or a self-service machine.

[0055] As shown in Figure 2 and ​ The electronic device includes the middle frame assembly 1 as described above. The middle frame assembly 1 includes a middle frame and a first compensation circuit 17. The middle frame includes a support portion and a bezel 11 surrounding the support portion. The bezel 11 is provided with a break 111, and the bezel 11 on one side of the break 111 constitutes a first antenna radiator 112. The first end of the first compensation circuit 17 is grounded, and the second end of the first compensation circuit 17 is connected to the first antenna radiator 112. The first compensation circuit 17 is configured to improve the radiation efficiency of a target frequency band in a plurality of working frequency bands of the first antenna radiator 112.

[0056] With such a setting form, on the one hand, the radiation efficiency of the target frequency band in the plurality of working frequency bands of the first antenna radiator 112 is improved by the first compensation circuit 17, which can effectively improve the antenna performance of the electronic device. On the other hand, by adjusting the device parameter value of the first compensation circuit 17 to adjust the radiation efficiency of the target frequency band, instead of changing the structure size of the bezel 11 to improve the radiation performance of the target frequency band, it is also beneficial to shorten the production cycle of the electronic device, thereby effectively improving the production efficiency of the electronic device. In addition, the setting of the first compensation circuit 17 can widen the antenna bandwidth of the electronic device, thereby further improving the antenna performance of the electronic device.

[0057] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the present disclosure cover any and all variations of the present disclosure including those variations that can be incorporated into the above detailed description and making use of the general principles of the present disclosure. It is intended that the present disclosure include all such as fall within the scope of the appended claims and their equivalents. The specification and examples given are intended as illustrative only and not limiting of the true scope and spirit of the present disclosure.

[0058] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A middle frame assembly, characterized in that, The middle frame assembly comprises: a middle frame comprising a support part and a bezel surrounding the support part, a break joint being arranged on the bezel, the bezel on one side of the break joint constituting a first antenna radiator, the first antenna radiator having a plurality of working frequency bands; a first compensation circuit, a first end of the first compensation circuit being grounded, a second end of the first compensation circuit being connected with the first antenna radiator, the first compensation circuit being configured to improve the radiation efficiency of a target frequency band in the plurality of working frequency bands of the first antenna radiator.

2. The middle frame assembly of claim 1, wherein, The first compensation circuit comprises: a first inductor, a first end of the first inductor being connected with the first antenna radiator, a second end of the first inductor being grounded; a first capacitor, connected in parallel with the first inductor. 3.The middle frame assembly of claim 1, wherein, A first feeding point is arranged on the first antenna radiator, the second end of the first compensation circuit being connected between the first feeding point and a first end part of the first antenna radiator towards the break joint.

4. The middle frame assembly of claim 3, wherein, The connection position between the second end of the first compensation circuit and the first antenna radiator is located at a preset distance from the first end part, the preset distance comprising 1mm to 2mm.

5. The middle frame assembly of claim 3, wherein, A first grounding point is arranged on the first antenna radiator, the first grounding point being located on a side of the first feeding point away from the first end part.

6. The middle frame assembly of claim 5, wherein, The first antenna radiator is provided with a first rib position protruding in a first direction, the first rib position constituting the first feeding point; and / or, The first antenna radiator is provided with a second rib position protruding in a first direction, the second rib position constituting the first grounding point. 7.The middle frame assembly of claim 1, wherein, The middle frame assembly further comprises: a connecting piece, the connecting piece being connected with the first antenna radiator, the second end of the first compensation circuit being connected with the connecting piece.

8. The middle frame assembly of claim 7, wherein, The first antenna radiator is provided with a third rib position protruding in a first direction, the third rib position constituting the connecting piece.

9. The middle frame assembly of any one of claims 1-8, wherein, The bezel on the other side of the break joint constitutes a second antenna radiator, the second antenna radiator being provided with a second grounding point and a second feeding point, the second feeding point being located between a second end part of the second antenna radiator towards the break joint and the second grounding point.

10. The middle frame assembly of claim 9, wherein, The second antenna radiator has a plurality of working frequency bands, the middle frame assembly further comprising: a second compensation circuit, a first end of the second compensation circuit being grounded, a second end of the second compensation circuit being connected with the second antenna radiator and located between the second end part and the second feeding point, the second compensation circuit being configured to improve the radiation efficiency of a target frequency band in the plurality of working frequency bands of the second antenna radiator. 11.The middle frame assembly of claim 10, wherein, The second compensation circuit comprises: a second inductor, a first end of the second inductor being connected with the second antenna radiator, a second end of the second inductor being grounded; a second capacitor, connected in parallel with the second inductor. 12.The middle frame assembly of claim 9, wherein, The first antenna radiator and the second antenna radiator together can cover a radiation frequency range of 1000Mhz to 6000Mhz.

13. An electronic device, comprising: The electronic device comprises the middle frame assembly according to any one of claims 1 to 12.

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