CN118137110A - Antenna assembly and electronic equipment - Google Patents

Abstract

The invention discloses an antenna assembly and electronic equipment. The antenna assembly comprises a metal middle frame and a tuning module. The metal middle frame comprises a metal frame, the metal frame comprises a frame antenna, and the frame antenna comprises a first frame section and a second frame section; the tuning module comprises a feed part, a first feed point, a second feed point, an impedance matching circuit, a switch circuit, a first tuning circuit and a second tuning circuit; the first feeding point is electrically connected with the first frame section, the second feeding point is electrically connected with the second frame section, and the impedance matching circuit is connected between the feeding part and the first feeding point; one end of the first tuning circuit is connected between the impedance matching circuit and the first feed point through connection, and the other end of the first tuning circuit is grounded; one end of the second tuning circuit is connected between the first feeding point and the impedance matching circuit, and the other end of the second tuning circuit is connected with the second feeding point; the first tuning circuit is communicated with the feed part, the second tuning circuit is disconnected, and the frame antenna has a first working frequency band; the first tuning circuit and the second tuning circuit are communicated with the feed part, and the frame antenna is provided with a second working frequency band.

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. When the frame is adopted to form the antenna, how to use the frame to realize the coverage of a larger frequency band becomes a focusing point and a breakthrough point in the field.

Disclosure of Invention

The present disclosure provides an antenna assembly and an electronic device. The antenna assembly can utilize the first frame section and the second frame section which are matched with each other at intervals by the switch circuit, so that the frame antenna has at least two different working frequency bands, the working frequency bands of the frame antenna can be widened, and the working performance of the frame antenna can be improved.

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, wherein the metal frame comprises frame antennas which are arranged at intervals with the middle frame body, the frame antennas comprise a first frame section and a second frame section, a first gap is formed between the first frame section and the second frame section, and a second gap is formed at the other end of the second frame section; the tuning module comprises a feed part, a first feed point, a second feed point, an impedance matching circuit, a switching circuit, a first tuning circuit and a second tuning circuit; the first feeding point is electrically connected with the first frame section, the second feeding point is electrically connected with the second frame section, and the impedance matching circuit is electrically connected between the feeding part and the first feeding point; one end of the first tuning circuit is electrically connected between the impedance matching circuit and the first feed point through the switch circuit, and the other end of the first tuning circuit is grounded; one end of the second tuning circuit is connected between the first feeding point and the impedance matching circuit through the switch circuit, and the other end of the second tuning circuit is electrically connected with the second feeding point; when the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is disconnected with the feed part through the switch circuit, the frame antenna has a first working frequency band; when the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is also communicated with the feed part through the switch circuit, the frame antenna has a second 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 antenna assembly is electrically connected with the first frame section through the first feeding point, the second feeding point is electrically connected with the second frame section, and the impedance matching circuit is electrically connected between the feeding part and the first feeding point; one end of the first tuning circuit is electrically connected between the impedance matching circuit and the first feed point through the switch circuit, and the other end of the first tuning circuit is grounded; one end of the second tuning circuit is connected between the first feeding point and the impedance matching circuit through the switch circuit, and the other end of the second tuning circuit is electrically connected with the second feeding point; when the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is disconnected with the feed part through the switch circuit, the frame antenna has a first working frequency band; when the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is also communicated with the feed part through the switch circuit, the frame antenna has a second working frequency band. The first frame section and the second frame section which are matched with each other at intervals by utilizing the switch circuit are used for enabling the frame antenna to have at least two different working frequency bands, so that the working frequency bands of the frame antenna can be widened, and the working performance of the frame antenna can be improved.

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 switch circuit, the at least two tuning subunits are respectively grounded and are respectively electrically connected between the impedance matching circuit and the first feeding point through the switch circuit, so that the first working 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, at least one tuning subunit is communicated with the feed part.

In one embodiment, the tuning subunit 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 number of the groups of groups,

The tuning subunit further comprises at least one second tuning device connected with the first tuning device in parallel and a switch for controlling the on-off of the first tuning device and the second tuning device.

In one embodiment, the tuning subunits are three.

In one embodiment, the second tuning circuit comprises at least one capacitor and/or at least one inductor.

In one embodiment, the impedance matching circuit comprises at least one capacitor, or the impedance matching circuit comprises at least one capacitor and at least one inductor.

In one embodiment, the impedance matching circuit includes a first inductor, a second inductor and an impedance capacitor, where the first inductor and the impedance capacitor are connected in series and connected between the first feeding point and the feeding portion, the first inductor is closer to the feeding portion, one end of the second inductor is connected between the first inductor and the feeding portion, and the other end of the second inductor is grounded.

In one embodiment, the first operating frequency band is a middle-high frequency band, and the second operating frequency band is a low frequency band.

In one embodiment, the length of the first frame section is 15mm-25mm; and/or the number of the groups of groups,

The length of the second frame section is 14mm-25mm.

In one embodiment, the first frame section is correspondingly provided with a first function key, and the second frame section is correspondingly provided with a second function key.

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 working frequency bands of the frame antenna are widened, the working performance of the frame antenna is improved, and the service performance of the electronic equipment is improved.

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, and the first tuning circuit is electrically connected to 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 view of a portion of an antenna assembly of the electronic device shown in fig. 1.

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 tuning subunits shown in some embodiments.

Fig. 6 is a schematic diagram of a first tuning device shown in some embodiments.

Fig. 7 is a schematic diagram of an internal hardware structure of an electronic device in an embodiment.

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. 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. When the frame is adopted to form the antenna, how to use the frame to realize the coverage of a larger frequency band becomes a focusing point and a breakthrough point in the field. Some side walls of the electronic device are provided with function keys (such as a start key, a volume key and the like), and corresponding frame antennas are arranged at the keys. However, the bezel antenna at the key in the related art generally employs a conventional IFA antenna, which has a narrow bandwidth and limited coverage of a frequency band, such as only covering a part of the middle-high frequency band.

Based on the above, the application provides an antenna assembly, which comprises a metal middle frame and a tuning module. The metal middle frame comprises a middle frame body and a metal frame, the metal frame comprises frame antennas which are arranged at intervals with the middle frame body, the frame antennas comprise a first frame section and a second frame section, a first gap is formed between the first frame section and the second frame section, and a second gap is formed at the other end of the second frame section; the tuning module comprises a feed part, a first feed point, a second feed point, an impedance matching circuit, a switching circuit, a first tuning circuit and a second tuning circuit; the first feeding point is electrically connected with the first frame section, the second feeding point is electrically connected with the second frame section, and the impedance matching circuit is electrically connected between the feeding part and the first feeding point; one end of the first tuning circuit is electrically connected between the impedance matching circuit and the first feed point through the switch circuit, and the other end of the first tuning circuit is grounded; one end of the second tuning circuit is connected between the first feeding point and the impedance matching circuit through the switch circuit, and the other end of the second tuning circuit is electrically connected with the second feeding point; when the first tuning circuit is communicated with the feed part and the second tuning circuit is disconnected from the feed part, the frame antenna has a first working frequency band; when the first tuning circuit is communicated with the feed part and the second tuning circuit is communicated with the feed part, the frame antenna has a second working frequency band. The antenna assembly can utilize the first frame section and the second frame section which are matched with each other at intervals by the switch circuit, so that the frame antenna has at least two different working frequency bands, the working frequency bands of the frame antenna can be widened, and the working performance of the frame antenna can be improved.

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 4, 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 includes a middle frame body 111 and a metal frame 112, and the metal frame 112 includes frame antennas spaced apart from the middle frame body 111. The frame antenna comprises a first frame section 210 and a second frame section 220, wherein a first gap 102 is formed between the first frame section 210 and the second frame section 220, and a second gap 103 is formed at the other end of the second frame section 220. The tuning module includes a feeding part 230, a first feeding point 240, a second feeding point 260, an impedance matching circuit 250, a switching circuit 270, a first tuning circuit 280, and a second tuning circuit 290; the first feeding point 240 is electrically connected to the first frame section 210, the second feeding point 260 is electrically connected to the second frame section 220, and the impedance matching circuit 250 is electrically connected between the feeding portion 230 and the first feeding point 240; one end of the first tuning circuit 280 is electrically connected between the impedance matching circuit 250 and the first feeding point 240 through the switching circuit 270, and the other end is grounded; one end of the second tuning circuit 290 is connected between the first feeding point 240 and the impedance matching circuit 250 through the switching circuit 270, and the other end is electrically connected to the second feeding point 260. 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 from the feeding part 230 through the switching circuit 270, the frame antenna has a first operating frequency band; when the first tuning circuit 280 is in communication with the feeding part 230 through the switching circuit 270 and the second tuning circuit 290 is also in communication with the feeding part 230 through the switching circuit 270, the bezel antenna has a second operating frequency band.

When the antenna assembly 200 is in use, the first feeding point 240 is electrically connected to the first frame section 210, the second feeding point 260 is electrically connected to the second frame section 220, and the impedance matching circuit 250 is electrically connected between the feeding portion 230 and the first feeding point 240; one end of the first tuning circuit 280 is electrically connected between the impedance matching circuit 250 and the first feeding point 240 through the switching circuit 270, and the other end is grounded; one end of the second tuning circuit 290 is connected between the first feeding point 240 and the impedance matching circuit 250 through the switching circuit 270, and the other end is electrically connected to the second feeding point 260. 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 from the feeding part 230 through the switching circuit 270, the frame antenna has a first operating frequency band; when the first tuning circuit 280 is in communication with the feeding part 230 through the switching circuit 270 and the second tuning circuit 290 is also in communication with the feeding part 230 through the switching circuit 270, the bezel antenna has a second operating frequency band. The first frame section 210 and the second frame section 220 which are matched with each other at intervals by utilizing the switch circuit are used for adjusting the size of the frame section in the frame antenna, so that the frame antenna at least has two different working frequency bands, the working frequency bands of the frame antenna are widened, and the working performance of the frame antenna is improved.

It should be noted that the first operating frequency band may be a middle-high frequency band, such as 1.7GHz-2.7GHz and N78/N79. The second operating frequency band may be a low frequency band, such as 700Mhz to 960Mhz. Therefore, the frame antenna can realize full-band coverage.

In some embodiments, the first functional key 400 is correspondingly disposed on the first frame section 210, and the second functional key 500 is correspondingly disposed on the second frame section 220, so that the user is not easy to block whether the frame antenna is a vertical screen or a horizontal screen (such as when playing a game on a horizontal screen) during the working process, thereby being beneficial to ensuring the working performance of the antenna assembly 200 of the electronic device.

The first function key 400 may be a volume key, and the second function key 500 may be a power-on key, or vice versa.

In some embodiments, the first frame section 210, as referred to herein, may have a length L2 of 15mm-25mm.

In some embodiments, the second rim section 220, as referred to herein, may be provided with a length L1 of 14mm-25mm.

The specific lengths of the first frame section 210 and the second frame section 220 may be specifically set according to the specific situation.

In some embodiments, the first tuning circuit 280 includes at least two tuning subunits respectively connected in series with the switching circuit, the at least two tuning subunits are respectively grounded and electrically connected between the impedance matching circuit 250 and the first feeding point 240 through the switching circuit 270, respectively, such 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, at least one of the tuning sub-units communicates with the feeding section 230.

For example, in some embodiments, the first operating frequency band may include a first sub-band of 1.7GHz-2.7Ghz, and may also include a second sub-band of N78/N79. The sub-bands of the first operating band may be realized in particular by tuning of different tuning sub-units. Each sub-band may also include a plurality of different frequency bands.

Referring to fig. 4, the tuning subunits are three. Tuning sub-unit 281, tuning sub-unit 282, and tuning sub-unit 283, respectively, the first operating frequency band may be implemented by tuning sub-unit 281, tuning sub-unit 282, and tuning sub-unit 283, as the case may be.

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

The first tuning device 201 comprises at least one capacitor, at least one inductor or at least one capacitor and at least one inductor.

For example, as shown in connection with fig. 6, in some embodiments, the first tuning device 201 includes a capacitor 2001 and an inductor 2002 in series. The lower end of the first tuning device 201 is grounded. The upper end is connected to a switching circuit 270.

Of course, in other embodiments, the first tuning device 201 may also include only one capacitor or one inductor. Or a combination of more capacitances and inductances.

In this embodiment, the tuning sub-unit may comprise only the first tuning device.

In other embodiments, the tuning subunit includes, in addition to the first tuning device 201, at least one second tuning device 202 connected in parallel to the first tuning device 201, and a switch for controlling the first tuning device 201 to be turned on or off with the second tuning device 202.

For example, as shown in connection with fig. 5, the tuning sub-unit 281 includes a first tuning device 201 and a second tuning device 202, and a switch 203.

The second tuning device may also be inductive or capacitive or a combination of inductive and capacitive.

Note that the tuning subunit 282 and the tuning subunit 282 may be the same or different. The specific structure of each subunit may be set according to the specific situation.

In other embodiments, the second tuning circuit 290 includes at least one capacitor and/or at least one inductor. The second tuning circuit 290 may include one or more tuning structures similar to the tuning sub-units described above.

The impedance matching circuit 250 includes at least one capacitor, or the impedance matching circuit includes at least one capacitor and at least one inductor.

In some embodiments, the impedance matching circuit 250 includes a first inductor 251, a second inductor 253, and an impedance capacitor 253, where the first inductor 251 and the impedance capacitor 253 are connected in series and are connected between the first feeding point 240 and the feeding portion 230, the first inductor 251 is closer to the feeding portion 230, and one end of the second inductor 253 is connected between the first inductor 251 and the feeding portion 230, and the other end is grounded.

Referring to fig. 1, 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, and the tuning module is disposed on the circuit board 300. Accordingly, the first tuning circuit 280 is electrically connected to the ground network, and the second inductor 253 is electrically connected to the ground network.

The ground network referred to herein may comprise a ground plane.

Referring to fig. 7, 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 (13)

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, each frame antenna comprises a first frame section and a second frame section, a first gap is formed between the first frame section and the second frame section, and a second gap is formed at the other end of the second frame section; and

The tuning module comprises a feed part, a first feed point, a second feed point, an impedance matching circuit, a switching circuit, a first tuning circuit and a second tuning circuit; the first feeding point is electrically connected with the first frame section, the second feeding point is electrically connected with the second frame section, and the impedance matching circuit is electrically connected between the feeding part and the first feeding point; one end of the first tuning circuit is electrically connected between the impedance matching circuit and the first feed point through the switch circuit, and the other end of the first tuning circuit is grounded; one end of the second tuning circuit is connected between the first feeding point and the impedance matching circuit through the switch circuit, and the other end of the second tuning circuit is electrically connected with the second feeding point;

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

When the first tuning circuit is communicated with the feed part through the switch circuit and the second tuning circuit is also communicated with the feed part through the switch circuit, the frame antenna has a second 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 first feed point 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, at least 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, characterized in that the first tuning device comprises at least one capacitance and/or at least one inductance; and/or the number of the groups of groups,

The tuning subunit further comprises at least one second tuning device connected with the first tuning device in parallel and a 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.

6. The antenna assembly according to claim 1, wherein the second tuning circuit comprises at least one capacitance and/or at least one inductance.

7. The antenna assembly of claim 1, wherein the impedance matching circuit comprises at least one capacitor or the impedance matching circuit comprises at least one capacitor and at least one inductor.

8. The antenna assembly of claim 7 wherein the impedance matching circuit comprises a first inductor, a second inductor, and an impedance capacitor, the first inductor and the impedance capacitor being connected in series and between the first feed point and the feed, the first inductor being closer to the feed, one end of the second inductor being connected between the first inductor and the feed, and the other end being grounded.

9. The antenna assembly of claim 2, wherein the first operating frequency band is a medium-high frequency band and the second operating frequency band is a low frequency band.

10. The antenna assembly of any one of claims 1 to 9, wherein the first frame section has a length of 15mm-25mm; and/or the number of the groups of groups,

The length of the second frame section is 14mm-25mm.

11. The antenna assembly of any one of claims 1-9, wherein a first functional key is correspondingly provided on the first bezel segment and a second functional key is correspondingly provided on the second bezel segment.

12. An electronic device comprising a housing assembly and the antenna assembly of any one of claims 1 to 11, the antenna assembly being disposed in the housing assembly.

13. The electronic device of claim 12, further comprising a circuit board electrically connected to the antenna assembly, the circuit board having a ground network, the first tuning circuit being electrically connected to the ground network.