CN117374597A - Antenna assembly and electronic equipment - Google Patents

Abstract

The invention discloses an antenna assembly and electronic equipment. The antenna assembly includes a metal center and a tuning module. The metal middle frame comprises a middle frame body and a metal frame, and the metal frame comprises frame antennas which are arranged at intervals with the middle frame body; the tuning module comprises a feed part, an input part, a loss adjusting device, an impedance matching circuit, a switch circuit, a first tuning circuit and a second tuning circuit, wherein the input part is electrically connected with the frame antenna, and the loss adjusting device is electrically connected between the feed part and the input part after being connected with the impedance matching circuit in series. When the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is disconnected, the frame antenna has a first working frequency band. When the second tuning circuit is connected with the feed part through the switch circuit and the first tuning circuit is disconnected, the frame antenna has a second working frequency band different from the first working frequency band. The antenna assembly is applied to electronic equipment, and is beneficial to reducing the difficulty of structural arrangement of the electronic equipment.

Description

Antenna assembly and electronic equipment

Technical Field

The disclosure relates to the technical field of electronic devices, and in particular relates to an antenna assembly and an electronic device.

Background

Electronic devices such as mobile phones, tablet computers, communication watches and the like have become indispensable scientific and technological products in the life, study and entertainment processes of people. With the development of communication technology, more and more electronic devices form a frame antenna on a metal frame to perform communication, so that the internal space of the electronic device can be fully utilized.

In the related art, however, the structure of the electronic device is more and more compact, the radiation performance of the frame antenna is easily affected by other metal devices, and the arrangement space is limited, which increases the difficulty of the structural arrangement of the electronic device.

Disclosure of Invention

The present disclosure provides an antenna assembly and an electronic device. The antenna assembly can be switched between at least two different working frequency bands by utilizing a limited frame antenna, and is further beneficial to reducing the difficulty of structural arrangement of electronic equipment.

The technical scheme is as follows:

according to a first aspect of embodiments of the present disclosure, an antenna assembly is provided that includes a metal center and a tuning module. The metal middle frame comprises a middle frame body and a metal frame, and the metal frame comprises frame antennas which are arranged at intervals with the middle frame body; the tuning module comprises a feed part, an input part, a loss adjusting device, an impedance matching circuit, a switch circuit, a first tuning circuit and a second tuning circuit, wherein the input part is electrically connected with the frame antenna, and the loss adjusting device is electrically connected between the feed part and the input part after being connected with the impedance matching circuit in series. One end of the first tuning circuit is electrically connected between the impedance matching circuit and the loss adjusting device through the switching circuit, and the other end of the first tuning circuit is grounded. One end of the second tuning circuit is electrically connected between the impedance matching circuit and the loss adjusting device through the switching circuit, and the other end of the second tuning circuit is grounded. When the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is disconnected, the frame antenna has a first working frequency band. When the second tuning circuit is connected with the feed part through the switch circuit and the first tuning circuit is disconnected, the frame antenna has a second working frequency band different from the first working frequency band.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

when the antenna assembly is used, the input part is electrically connected with the frame antenna, and the loss adjusting device is electrically connected between the feed part and the input part after being connected with the impedance matching circuit in series. One end of the first tuning circuit is electrically connected between the impedance matching circuit and the loss adjusting device through the switching circuit, and the other end of the first tuning circuit is grounded. One end of the second tuning circuit is electrically connected between the impedance matching circuit and the loss adjusting device through the switching circuit, and the other end of the second tuning circuit is grounded. And then can be after realizing the initial impedance matching and the return loss adjustment of frame antenna, through first tuned circuit and feed portion intercommunication through switching circuit, and when second tuned circuit was disconnected, the frame antenna can work at first operating frequency band. And when the second tuning circuit is communicated with the feed part through the switch circuit and the first tuning circuit is disconnected, the frame antenna can work in a second working frequency band which is different from the first working frequency band. The switching circuit is utilized to flexibly switch, so that the frame antenna has at least two different working frequency bands, the number of antennas of the electronic equipment is reduced, and the arrangement difficulty of internal electronic devices of the electronic equipment is reduced.

The technical scheme of the present disclosure is further described below:

in one embodiment, the first tuning circuit includes at least two tuning subunits respectively connected in series with the switching circuit, the at least two tuning subunits are respectively grounded and are respectively electrically connected between the impedance matching circuit and the loss adjusting device through the switching circuit, so that the first working frequency band has at least two different frequency sub-bands; when the first tuning circuit is connected to the feeding section through the switching circuit, one tuning subunit is connected to the feeding section.

In one embodiment, the tuning sub-unit comprises at least one first tuning device connected in series with the feed and the switching circuit.

In one embodiment, the first tuning device comprises at least one capacitor and/or at least one inductor; and/or the tuning subunit further comprises at least one second tuning device connected with the first tuning device in parallel and a first switch for controlling the on-off of the first tuning device and the second tuning device.

In one embodiment, the tuning subunits are three; when one tuning subunit is connected with the feed part in series through the switch circuit, the frequency sub-band of the frame antenna is B32; when the other tuning subunit is connected with the feed part in series through the switch circuit, the frequency sub-band of the frame antenna is B1; and when the last tuning subunit is connected with the feed part in series through the switch circuit, the frequency sub-band of the frame antenna is B3.

In one embodiment, the second tuning circuit comprises a third tuning device and a fourth tuning device, the fourth tuning device is connected in series with the switch circuit and connected in parallel with the loss adjusting device, one end of the third tuning device is grounded, and the other end of the third tuning device is connected in parallel with the fourth tuning device; when the second tuning circuit is communicated with the impedance matching circuit through the switching circuit, the fourth tuning device is connected with the loss device in parallel and then connected with the third tuning device in series.

In one embodiment, the second tuning circuit further includes a fifth tuning device connected in parallel with the fourth tuning device, one end of the fifth tuning device being grounded, and the other end of the fifth tuning device being connected in parallel with the fourth tuning device, respectively.

In one embodiment, the third tuning device comprises at least one capacitor and/or at least one inductor; and/or the fourth tuning device comprises at least one capacitor and/or at least one inductor.

In one embodiment, the loss adjustment means comprises at least one adjustment member in series with the feed and the input, the adjustment member comprising a capacitance and/or an inductance.

In one embodiment, the adjusting members include at least two adjusting members, at least one of the adjusting members is a capacitor, and at least one of the adjusting members is an inductor; and/or the regulating parts comprise at least two regulating parts which are arranged in parallel, and the loss regulating device also comprises a control part for controlling the on-off of the at least two regulating parts which are arranged in parallel.

In one embodiment, the bezel antenna has a third operating band when both the first tuning circuit and the second tuning circuit are turned off.

In one embodiment, the length of the frame antenna is L1, the frame antenna includes a feeding point connected to the feeding portion, and the distance between the feeding point and the free end of the frame antenna is L2, l2=1/4L 1.

According to a second aspect of the embodiments of the present disclosure, there is further provided an electronic device, including a housing assembly and an antenna assembly in any of the above embodiments, where the antenna assembly is disposed on the housing assembly.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

the electronic equipment is applied with the antenna assembly, and the frame antenna is enabled to have at least two different working frequency bands by the tuning module, so that the number of the antennas of the electronic equipment is reduced, and the arrangement difficulty of internal electronic devices of the electronic equipment is reduced.

The technical scheme of the present disclosure is further described below:

in one embodiment, the electronic device further includes a circuit board electrically connected to the antenna assembly, the circuit board is provided with a ground network, the feeding assembly and the tuning module are disposed on the circuit board, and the tuning module is connected in series with the ground network.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and their description are given by way of illustration and not of limitation.

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of an electronic device in an embodiment.

Fig. 2 is a schematic structural view of the metal middle frame shown in fig. 1.

Fig. 3 is a schematic structural view of a metal middle frame in another embodiment.

Fig. 4 is a schematic diagram of connection applied to the antenna assembly shown in fig. 1.

Fig. 5 is a schematic diagram of the connection of the antenna assembly shown in other embodiments.

Fig. 6 is a schematic diagram of the connection of tuning subunits shown in some embodiments.

Fig. 7 is a schematic diagram of a first tuning device shown in some embodiments.

Fig. 8 is a schematic diagram of a loss adjustment device shown in an embodiment.

Fig. 9 is an antenna performance diagram of the bezel antenna shown in fig. 5 in a first operating frequency band.

Fig. 10 is an antenna performance diagram of the bezel antenna shown in fig. 5 in a second operating frequency band.

Fig. 11 is a schematic diagram of an internal hardware structure of an electronic device in an embodiment.

Reference numerals illustrate:

10. an electronic device; 11. a processing assembly; 12. a memory; 13. a power supply assembly; 14. a multimedia component; 15. an audio component; 16. an input/output interface; 17. a sensor assembly; 18. a communication component; 100. a housing assembly; 110. a metal middle frame; 111. a middle frame body; 112. a metal frame; 101. a first slit; 102. a second slit; 103. a frame body; 104. a third slit; 200. an antenna assembly; 210. a frame antenna; 220. a second antenna; 230. a power feeding section; 240. an input unit; 250. a loss adjustment device; 251. an adjusting member; 252. a second switch; 260. an impedance matching circuit; 270. a switching circuit; 280. a first tuning circuit; 281. a tuning subunit; 201. a first tuning device; 2011. a capacitor; 2002. an inductance; 202. a second tuning device; 203. a first switch; 290. a second tuning circuit; 291. a third tuning device; 292. a fourth tuning device; 293. a fifth tuning device; 300. a circuit board.

Detailed Description

For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the drawings and specific language will be used to describe the same. It should be understood that the detailed description is presented herein only to illustrate the present disclosure and not to limit the scope of the disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

Electronic devices such as mobile phones, tablet computers, communication watches and the like have become indispensable scientific and technological products in the life, study and entertainment processes of people. With the development of diversification of functions of electronic devices, electronic devices are various and brands are various, so that consumers can select the electronic devices, and how to obtain the consumer's favor is a problem that electronic device manufacturers attach more and more importance to.

At present, with the development of electronic devices, the integration of the electronic devices is higher and higher, and meanwhile, in order to adapt to miniaturization, gaps among electronic components in the electronic devices are smaller and smaller, and the layout is more and more compact.

In the related art, however, the structure of the electronic device is more and more compact, the radiation performance of the frame antenna is easily affected by other metal devices, and the arrangement space is limited, which increases the difficulty of the structural arrangement of the electronic device. For example, in the design of a metal frame mobile phone antenna, a metal frame antenna is generally designed on two sides of a break on the metal frame, and when the metal trim of the mobile phone camera is too large, the antenna performance of the frame antenna disposed close to the metal trim is seriously deteriorated. If the area cannot be used without an antenna, the communication frequency band of the electronic device is different. And the area continues to design the frame antenna or designs the antenna of the communication frequency band in other places, the internal structure arrangement of the electronic equipment is certainly required to be adjusted, and the arrangement difficulty is increased.

Based on this, it is necessary to provide an antenna assembly, which can switch between at least two different operating frequency bands by using a limited frame antenna, so as to reduce difficulty in structural arrangement of electronic devices.

For a better understanding of the antenna assembly of the present disclosure, the following description will be made in connection with an electronic device in which the antenna assembly is applied.

As shown in fig. 1 to 5, in an embodiment of the present disclosure, an electronic device 10 is provided, including a housing assembly 100 and the antenna assembly 200 described above, where the antenna assembly 200 is disposed on the housing assembly 100.

The antenna assembly 200 includes a metal center 110 and a tuning module. The metal middle frame 110 comprises a middle frame body 111 and a metal frame 112, and the metal frame 112 comprises a frame antenna 210 which is arranged at intervals with the middle frame body 111; the tuning module includes a feeding part 230, an input part 240, a loss adjusting device 250, an impedance matching circuit 260, a switching circuit 270, a first tuning circuit 280 and a second tuning circuit 290, wherein the input part 240 is electrically connected with the frame antenna 210, and the loss adjusting device 250 is electrically connected between the feeding part 230 and the input part 240 after being connected in series with the impedance matching circuit 260. One end of the first tuning circuit 280 is electrically connected between the impedance matching circuit 260 and the loss adjustment device 250 through the switching circuit 270, and the other end is grounded. One end of the second tuning circuit 290 is electrically connected between the impedance matching circuit 260 and the loss adjustment device 250 through the switching circuit 270, and the other end is grounded. When the first tuning circuit 280 is connected to the feeding part 230 through the switching circuit 270 and the second tuning circuit 290 is disconnected, the bezel antenna 210 has a first operating frequency band. When the second tuning circuit 290 is connected to the feeding part 230 through the switching circuit 270 and the first tuning circuit 280 is disconnected, the bezel antenna 210 has a second operating frequency band different from the first operating frequency band.

When the antenna assembly 200 is used, the input part 240 is electrically connected to the frame antenna 210, and the loss adjusting device 250 is connected in series with the impedance matching circuit 260, thereby electrically connecting the power feeding part 230 and the input part 240. One end of the first tuning circuit 280 is electrically connected between the impedance matching circuit 260 and the loss adjustment device 250 through the switching circuit 270, and the other end is grounded. One end of the second tuning circuit 290 is electrically connected between the impedance matching circuit 260 and the loss adjustment device 250 through the switching circuit 270, and the other end is grounded. Further, after the initial impedance matching and return loss adjustment of the bezel antenna 210 are achieved, the bezel antenna 210 can operate in the first operating frequency band when the first tuning circuit 280 is connected to the feeding section 230 through the switching circuit 270 and the second tuning circuit 290 is disconnected. And when the second tuning circuit 290 is connected to the feeding part 230 through the switching circuit 270 and the first tuning circuit 280 is disconnected, the bezel antenna 210 may operate in a second operating frequency band different from the first operating frequency band. The switching circuit 270 is utilized to flexibly switch, so that the frame antenna 210 has at least two different operating frequency bands, which is beneficial to reducing the number of antennas of the electronic device 10 and reducing the difficulty in arranging internal electronic devices of the electronic device 10.

The specific implementation of the impedance matching circuit 260 may be various, for example, implemented by a capacitor 2011 unit, or implemented by a filter unit formed by the capacitor 2011 and the inductor 2002, so that the impedance of the bezel antenna 210 may be adjusted, which is not limited herein.

The specific implementation of the loss adjustment device 250 may be various, for example, implemented by a capacitor 2011 unit, or implemented by a capacitor 2011 and an inductor 2002, and the return loss adjustment of the bezel antenna 210 may be implemented, which is not limited herein.

On the basis of any of the above embodiments, as shown in fig. 2, in some embodiments, the metal center 110 is assembled with other components of the housing assembly 100.

As shown in fig. 2, in some embodiments, a first slot 101 is disposed between the frame antenna 210 and the middle frame body 111, the metal frame 112 includes a frame body 103 disposed opposite to the frame antenna 210 to form a second slot 102, and the frame body 103 is connected to the middle frame body 111 to form a sidewall of the first slot 101 and a sidewall of the second slot 102. Thus, other structures can be flexibly arranged opposite to the frame antenna 210, so that the difficulty in arranging the structures of the electronic device 10 is reduced.

As shown in fig. 3, in some embodiments, a third slot 104 is disposed between the metal frame 112 and the middle frame body 111, and the third slot 104 is connected to the first slot 101 and the second slot 102, respectively, so that a portion of the metal frame 112 forms the second antenna 220. In this way, the second antenna 220 and the frame antenna 210 are respectively matched with the tuning module, so that more adjustment requirements of the working frequency band can be realized, further, the antenna arrangement of other frequency bands can be reduced, the antenna design is more flexible, and the design difficulty of the electronic device 10 is reduced.

It will be appreciated that the bezel antenna 210 is integrated into the metal center 110, i.e., portions of the structure of the antenna assembly 200 are integrated with the housing assembly 100, thereby improving the compactness of the electronic device 10.

As shown in fig. 1, in some embodiments, the electronic device 10 further includes a circuit board 300 electrically connected to the antenna assembly 200, the circuit board 300 is provided with a ground network (not shown), and the feeding assembly and the tuning module are disposed on the circuit board 300, and the tuning module is connected in series with the ground network. Thus, the feed assembly and the tuning module are integrated into the circuit board 300, which is beneficial to improving the integration degree of the electronic device 10 and adapting to the miniaturization development of the electronic device 10. But also facilitates grounding the tuning module using a ground network in the circuit board 300.

The ground network includes a ground layer.

In some embodiments, the frame antenna 210 is between 1.5GHZ and 2.7GHZ in the first operating frequency band.

Based on any of the above embodiments, as shown in fig. 5, in some embodiments, the first tuning circuit 280 includes at least two tuning subunits 281 respectively connected in series with the switch circuit 270, where the at least two tuning subunits 281 are respectively grounded and electrically connected between the impedance matching circuit 260 and the loss adjustment device 250 through the switch circuit 270, so that the first operating frequency band has at least two different frequency sub-bands; when the first tuning circuit 280 communicates with the feeding section 230 through the switching circuit 270, there is one tuning sub-unit 281 communicating with the feeding section 230. In this manner, the first operating frequency band may be further divided by the plurality of tuning subunits 281, such that the bezel antenna 210 can integrate functions of more other antennas.

For example, the bezel antenna 210 is 1.5GHZ to 2.7GHZ in the first operating band. The sub-bands include bands such as B32/B1/B3/B40/41.

The frame antenna 210 is 3.3GHZ to 5GHZ in the first operating frequency band. The sub-bands include N77/N78/N79 equal bands.

Specifically, N77 is 3.3GHZ to 4.2GHZ. N78 is 3.3 GHZ-3.8 GHZ. N79 is 4.4GHZ to 5GHZ.

Further, in some embodiments, the tuning sub-unit 281 includes at least one first tuning device 201 in series with the feed 230 and the switching circuit 270.

As shown in fig. 6, in some embodiments, the tuning sub-unit 281 further includes at least one second tuning device 202 connected in parallel with the first tuning device 201, and a first switch 203 for controlling the first tuning device 201 to be turned on or off with the second tuning device 202. In this way, the parallel control of the first tuning device 201 and the second tuning device 202 is implemented by using the first switch 203, so that the tuning subunit 281 may further divide different operating frequency bands.

For example, after the first switch 203 is closed, the tuning subunit 281 is electrically connected between the impedance matching circuit 260 and the loss adjustment device 250 through the switching circuit 270 by the first tuning device 201 and the second tuning device 202 connected in parallel, so that the tuning subunit 281 has an A1 frequency band; and the tuning sub-unit 281 has the first tuning device 201 after the first switch 203 is opened. And is electrically connected between the impedance matching circuit 260 and the loss adjustment device 250 through the switching circuit 270 such that the tuning sub-unit 281 has an A2 band.

It should be noted that the tuning value of the first tuning device 201 may be implemented by various structures, for example, a plurality of capacitors 2011 connected in series and/or in parallel, or a plurality of capacitors 2011 connected in series and/or in parallel with the inductor 2002.

Optionally, as shown in fig. 7, in some embodiments, the first tuning device 201 includes at least one capacitor 2011 and/or at least one inductor 2002.

Equivalently, the tuning value of the second tuning device 202 may be implemented by various structures, for example, by using a plurality of capacitors 2011 in series and/or parallel, or a capacitor 2011 in series and/or parallel with the inductor 2002.

On the basis of any of the embodiments of the tuning subunit 281 described above, as shown in fig. 5, in some embodiments, the tuning subunit 281 is three; when one of the tuning subunits 281 is connected in series with the feeding portion 230 through the switch circuit 270, the sub-band of the bezel antenna 210 is B32; when the other tuning subunit 281 is connected in series with the feeding portion 230 through the switch circuit 270, the sub-band of the bezel antenna 210 is B1; when the last tuning subunit 281 is connected in series with the feeding unit 230 through the switch circuit 270, the sub-band of the bezel antenna 210 is B3. Thus, the first operating frequency band may be further divided into three frequency bands to meet the communication requirements of the electronic device 10.

On the basis of any of the above embodiments, as shown in fig. 4, in some embodiments, the second tuning circuit 290 includes a third tuning device 291 and a fourth tuning device 292, where the fourth tuning device is connected in series with the switching circuit 270 and is connected in parallel with the loss adjustment device 250, and one end of the third tuning device 291 is grounded, and the other end is connected in parallel with the fourth tuning device 292; when the second tuning circuit 290 communicates with the feeding part 230 through the switching circuit 270, the fourth tuning device 292 is connected in parallel with the loss device and then connected in series with the third tuning device 291 to the ground. In this way, the fourth tuning device 292 is connected in parallel with the loss adjustment device 250 to adjust the loss of the bezel antenna 210, and the third tuning device 291 is used to adjust the operating frequency of the bezel antenna 210, so that the radiation performance of the bezel antenna 210 is good.

Further, as shown in fig. 5, in some embodiments, the second tuning circuit 290 further includes a fifth tuning device 293 connected in parallel with the fourth tuning device 292, one end of the fifth tuning device 293 is grounded, and the other end is connected in parallel with the fourth tuning device 292 and the loss adjustment device 250, respectively. As such, when the second tuning circuit 290 is turned on by the switching circuit 270, the operational comment of the bezel antenna 210 can be adjusted by the fifth tuning device 293. And after the second tuning circuit 290 is disconnected, the second tuning circuit may still be grounded, so that tuning adjustment of the tuning module is more flexible, and the frequency range of the second working frequency band is improved.

In some embodiments, the second operating frequency range is 3.3GHZ to 5GHZ.

Further referring to fig. 9 and fig. 10, fig. 9 is an antenna performance diagram of the frame antenna 210 shown in fig. 5 in the first operating frequency band. Fig. 10 is an antenna performance diagram of the bezel antenna 210 shown in fig. 5 in the second operating frequency band. It may be obtained that the first tuning circuit 280 is utilized to enable the bezel antenna 210 to have good antenna performance in the first operating frequency band, and the second tuning circuit 290 is utilized to enable the bezel antenna 210 to have good antenna performance in the second operating frequency band, that is, the antenna operating frequency band switching technology of the present disclosure can meet the communication requirement of the electronic device 10, and is beneficial to reducing the difficulty of arranging the antenna positions of the electronic device 10.

As shown in fig. 7, equivalently, the tuning values of the third tuning device, the fourth tuning device, and the fifth tuning device may be implemented by various structures, for example, by using a plurality of capacitors in series and/or parallel, or a capacitor in series and/or parallel with an inductor.

Optionally, in some embodiments, the third tuning device comprises at least one capacitor and/or at least one inductor.

Optionally, the fourth tuning device comprises at least one capacitor and/or at least one inductor. Therefore, the first switch is utilized to realize the parallel control of the first tuning device and the second tuning device, so that the tuning subunit can further divide different working frequency bands.

As shown in fig. 5, in some embodiments, when the first tuning circuit and the second tuning circuit are both turned off, the bezel antenna has a third operating frequency band. Therefore, the on-off control characteristic of the switch circuit can be fully utilized, so that the frame antenna has three working frequency bands, and the design difficulty of the tuning module is not increased.

The specific implementation forms of the switch unit may be various, and the switch requirement may be satisfied. For example, the switch unit is provided with a plurality of switches, and is respectively connected with the corresponding tuning sub-units in series and the second tuning circuit in series to realize the on-off control respectively. Alternatively, for example, the switching unit may have a plurality of on-off positions, the closing of a certain on-off position may be selectively achieved, and the other positions opened, or so the on-off positions are all opened, etc. The switch unit is a toggle switch and is provided with a plurality of on-off positions.

On the basis of any of the above embodiments, as shown in fig. 8, in some embodiments, the loss adjustment device 250 includes at least one adjustment member 251 connected in series with the feeding portion 230 and the input portion 240, and the adjustment member 251 includes a capacitor 2011 and/or an inductor 2002. As such, the adjustment value of the loss adjustment device 250 may be implemented by a variety of structures, such as by using multiple capacitors 2011 in series and/or parallel, or by using capacitors 2011 in series and/or parallel with the inductor 2002

Optionally, in some embodiments, the adjusting members 251 include at least two adjusting members 251, and at least one adjusting member 251 is a capacitor 2011, and at least one adjusting member 251 is an inductor 2002.

Further, as shown in fig. 8, the adjusting members 251 include at least two adjusting members 251 and are disposed in parallel, and the loss adjusting device 250 further includes a second switch 252 for controlling on/off of the at least two adjusting members 251 disposed in parallel. In this way, the second switch 252 is utilized to realize parallel control of at least two adjusting devices, so that the loss adjusting device 250 connected to the tuning module can flexibly adjust the loss adjusting value according to the working frequency band of the frame antenna 210, so as to improve the performance of the frame antenna 210.

For example, after the first switch 203 is closed, the loss adjusting device 250 is connected in series between the impedance matching circuit 260 and the frame antenna 210 through the first adjusting device 251 and the second adjusting device 251 that are connected in parallel, so that when the frame antenna 210 works in the first working frequency band, the radiation performance of the frame antenna 210 in the first working frequency band is improved by using the loss adjusting device 250 in this state; after the first switch 203 is turned off, the loss adjusting device 250 is connected in series between the impedance matching circuit 260 and the frame antenna 210 through the first adjusting device 251, so that when the frame antenna 210 works in the second working frequency band, the radiation performance of the frame antenna 210 in the second working frequency band is improved by using the loss adjusting device 250 in this state.

In some embodiments, the capacitance value of the loss adjustment device is adjustable. Therefore, the return loss of the frame antenna can be adjusted by adjusting the capacitance value of the loss adjusting device, so that the performance of the frame antenna is improved.

Further, the capacitance value of the loss adjuster is one of 0.3pF, 0.4pF, 0.5pF, 0.7 pF.

Based on any of the above embodiments, in some embodiments, the length of the bezel antenna 210 is L1, the bezel antenna 210 includes a feeding point connected to the feeding portion 230, and the distance between the feeding point and the free end of the bezel antenna 210 is L2, l2=1/4L 1. In this way, tuning difficulty can be reduced, and debugging efficiency of the frame antenna 210 can be improved.

Referring to fig. 11, in some embodiments, the electronic device 10 may further include one or more of the following components: a processing component 11, a memory 12, a power supply component 13, a multimedia component 14, an audio component 15, an input/output interface 16, a sensor component 17, and a communication component 18.

The processing component generally controls overall operation of the electronic device, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component may include one or more processors to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component may include one or more modules that facilitate interactions between the processing component and other components. For example, the processing component may include a multimedia module to facilitate interaction between the multimedia component and the processing component.

The memory is configured to store various types of data to support operations at the electronic device. Examples of such data include instructions of any application or method configured to operate on the electronic device, contact data, phonebook data, messages, pictures, video, and the like. The memory may be implemented by any type of volatile or nonvolatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The control main board comprises a processing component and a memory.

The power supply assembly provides power to the various components of the electronic device. Power components may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for electronic devices.

The multimedia component comprises the display module disclosed by the disclosure, and human-computer interaction is facilitated. If the display module includes a touch panel, the display module may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia assembly includes a front camera and/or a rear camera. When the electronic device is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component is configured to output and/or input an audio signal. For example, the audio component includes a Microphone (MIC) configured to receive external audio signals when the electronic device is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in a memory or transmitted via a communication component. In some embodiments, the audio assembly further comprises a speaker configured to output an audio signal.

The input/output interface provides an interface between the processing assembly and a peripheral interface module, which may be a keyboard, click wheel, button, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly includes one or more sensors configured to provide status assessment of various aspects of the electronic device. For example, the sensor assembly may detect an on/off state of the electronic device, a relative positioning of the assemblies, such as a display and keypad of the electronic device, a change in position of the electronic device or one of the assemblies of the electronic device, the presence or absence of user contact with the electronic device, an orientation or acceleration/deceleration of the electronic device, and a change in temperature of the electronic device. The sensor assembly may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly may also include a photosensitive element, such as a CMOS or CCD image sensor, configured for use in imaging applications. In some embodiments, the sensor assembly may further include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component is configured to facilitate communication between the electronic device and other devices in a wired or wireless manner. The electronic device may access a wireless network based on a communication standard, such as WiFi,2G, 3G, 4G, 6G, or the like, or a combination thereof. In one exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first," "second," etc. can include at least one such feature, either explicitly or implicitly. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In this disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "mounted," "positioned," "secured" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as "fixed transmission connection" and the other element, the two elements may be fixed in a detachable connection manner, or may be fixed in a non-detachable connection manner, so that power transmission can be achieved, for example, sleeving, clamping, integrally forming and fixing, welding, etc., which may be achieved in the conventional technology, and no more details are needed. When an element is perpendicular or nearly perpendicular to another element, it is meant that the ideal conditions for both are perpendicular, but certain vertical errors may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples merely represent several embodiments of the present disclosure, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the inventive concepts of the present disclosure, which are within the scope of the present disclosure.

Claims (14)

1. An antenna assembly, comprising:

the metal middle frame comprises a middle frame body and a metal frame, wherein the metal frame comprises frame antennas which are arranged at intervals with the middle frame body; and

the tuning module comprises a feed part, an input part, a loss adjusting device, an impedance matching circuit, a switch circuit, a first tuning circuit and a second tuning circuit, wherein the input part is electrically connected with the frame antenna, and the loss adjusting device is electrically connected between the feed part and the input part after being connected with the impedance matching circuit in series; one end of the first tuning circuit is electrically connected between the impedance matching circuit and the loss adjusting device through the switch circuit, and the other end of the first tuning circuit is grounded; one end of the second tuning circuit is electrically connected between the impedance matching circuit and the loss adjusting device through the switch circuit, and the other end of the second tuning circuit is grounded;

when the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is disconnected, the frame antenna has a first working frequency band;

when the second tuning circuit is connected with the feed part through the switch circuit and the first tuning circuit is disconnected, the frame antenna has a second working frequency band different from the first working frequency band.

2. The antenna assembly of claim 1, wherein the first tuning circuit comprises at least two tuning subunits respectively connected in series with the switching circuit, the at least two tuning subunits respectively connected to ground and electrically connected between the impedance matching circuit and the loss adjustment device respectively through the switching circuit such that the first operating frequency band has at least two different frequency sub-bands; when the first tuning circuit is communicated with the feed part through the switch circuit, one tuning subunit is communicated with the feed part.

3. The antenna assembly of claim 2, wherein the tuning sub-unit includes at least one first tuning device in series with the feed and the switching circuit.

4. An antenna assembly according to claim 3, wherein the first tuning device comprises at least one capacitor and/or at least one inductor; and/or the tuning subunit further comprises at least one second tuning device connected with the first tuning device in parallel and a first switch for controlling the on-off of the first tuning device and the second tuning device.

5. The antenna assembly of claim 2, wherein the tuning subunits are three;

when one of the tuning subunits is connected with the feed part in series through the switch circuit, the frequency sub-band of the frame antenna is B32;

when the other tuning subunit is connected with the feed part in series through the switch circuit, the frequency sub-band of the frame antenna is B1;

and when the last tuning subunit is connected with the feed part in series through the switch circuit, the frequency sub-band of the frame antenna is B3.

6. The antenna assembly of claim 1, wherein the second tuning circuit comprises a third tuning device and a fourth tuning device, the fourth tuning device being connected in series with the switching circuit and in parallel with the loss adjustment device, one end of the third tuning device being grounded and the other end being connected in parallel with the fourth tuning device; and when the second tuning circuit is communicated with the impedance matching circuit through the switching circuit, the fourth tuning device is connected with the loss device in parallel and then connected with the third tuning device in series.

7. The antenna assembly of claim 6, wherein the second tuning circuit further comprises a fifth tuning device connected in parallel with the fourth tuning device, one end of the fifth tuning device being grounded and the other end being connected in parallel with the fourth tuning device and the loss adjustment device, respectively.

8. The antenna assembly according to claim 6, wherein the third tuning device comprises at least one capacitor and/or at least one inductor; and/or the fourth tuning device comprises at least one capacitor and/or at least one inductor.

9. The antenna assembly according to claim 8, characterized in that the loss adjustment means comprises at least one adjustment member in series with the feed and the input, the adjustment member comprising a capacitance and/or an inductance.

10. The antenna assembly of claim 9, wherein said tuning elements comprise at least two, and at least one of said tuning elements is capacitive and at least one of said tuning elements is inductive; and/or the regulating parts comprise at least two regulating parts and are arranged in parallel, and the loss regulating device also comprises a second switch for controlling the on-off of the at least two regulating parts arranged in parallel.

11. The antenna assembly of claim 1, wherein the bezel antenna has a third operating frequency band when the first tuning circuit and the second tuning circuit are both turned off.

12. The antenna assembly according to any one of claims 1 to 11, wherein the length of the rim antenna is L1, the rim antenna comprises a feeding point connected to the feeding portion, and the distance from the feeding point to the free end of the rim antenna is L2, l2=1/4L 1.

13. An electronic device comprising a housing assembly and the antenna assembly of any one of claims 1 to 12, the antenna assembly being disposed in the housing assembly.

14. The electronic device of claim 13, further comprising a circuit board electrically connected to the antenna assembly, the circuit board having a ground network, the first tuning circuit and the second tuning circuit being electrically connected to the ground network.