CN111509365A

CN111509365A - Antenna assembly and mobile terminal

Info

Publication number: CN111509365A
Application number: CN201910100094.2A
Authority: CN
Inventors: 梁沛宇; 焦涛; 刘钊
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-08-07
Anticipated expiration: 2039-01-31
Also published as: CN111509365B

Abstract

The present disclosure relates to an antenna assembly and a mobile terminal, the antenna assembly comprising a main antenna and a WiFi antenna; the main antenna comprises a metal bottom frame serving as a first radiation arm, a first broken joint, a second broken joint, a first feed point and a first grounding point, wherein the first broken joint and the second broken joint are arranged in the metal bottom frame; the WiFi antenna comprises a second radiating arm, a third radiating arm, a second feed point and a second grounding point, wherein the second radiating arm and the third radiating arm are intersected in a preset area, and the second feed point and the second grounding point are positioned in the preset area; the first feed point and the first grounding point are arranged close to the side where the first broken joint is located, the second radiation arm and the third radiation arm are arranged close to the side where the second broken joint is located, the length of the second radiation arm is larger than that of the third radiation arm, and the tail end of the second radiation arm points to the direction parallel to or far away from the metal bottom frame. The isolation between the two antennas can be improved by the method.

Description

Antenna assembly and mobile terminal

Technical Field

The present disclosure relates to the field of mobile communications technologies, and in particular, to an antenna assembly and a mobile terminal.

Background

With the continuous development of mobile communication technology, the development trend of mobile terminal devices such as mobile phones has evolved into a design mode of large power and full screen. However, this design mode results in reduced headroom and space compression of the handset antenna, thereby presenting significant challenges to the antenna design. Meanwhile, the functions of the mobile phone are more diversified, and the frequency range covered by the mobile phone is more and more comprehensive, so that the number of mobile phone antennas is gradually increased. Based on this, the contradiction between the reduction of the design space and the increase of the number of antennas causes the reduction of the isolation between the antennas, thereby affecting the performance of each antenna.

Disclosure of Invention

To overcome the problems in the related art, the embodiments of the present disclosure provide an antenna assembly and a mobile terminal. The technical scheme is as follows:

according to a first aspect of embodiments of the present disclosure, there is provided an antenna assembly, comprising a main antenna and a WiFi (Wireless Fidelity) antenna;

the main antenna comprises a metal bottom frame serving as a first radiation arm, a first broken joint and a second broken joint which are arranged in the metal bottom frame, a first feed point and a first grounding point, wherein the first broken joint and the second broken joint are distributed on two sides of the metal bottom frame;

the WiFi antenna comprises a second radiating arm, a third radiating arm, a second feed point and a second grounding point, wherein the second radiating arm and the third radiating arm are intersected in a preset area, and the second feed point and the second grounding point are positioned in the preset area;

the first feed point and the first grounding point are arranged close to the side where the first broken joint is located, the second radiation arm and the third radiation arm are arranged close to the side where the second broken joint is located, the length of the second radiation arm is larger than that of the third radiation arm, and the tail end of the second radiation arm points to the direction parallel to or far away from the metal bottom frame.

In one embodiment, the second radiation arm is parallel to the metal bottom frame and extends along a direction from the second broken joint to the first broken joint; the third radiation arm is perpendicular to the metal bottom frame and extends along a direction from the preset area to the metal bottom frame.

In one embodiment, the second radiation arm is located at a side of the preset area close to the metal bottom frame, the second radiation arm comprises a first section, a second section and a third section, the first section is connected to the preset area, the second section is connected between the first section and the third section, the first section and the third section are perpendicular to the metal bottom frame, and the end of the third section points to a direction away from the metal bottom frame; the third radiation arm is parallel to the metal bottom frame and extends along the direction from the second broken joint to the first broken joint.

In one embodiment, the shortest distance between the main antenna and the WiFi antenna is 1-3 cm.

In one embodiment, the first feed point is located between the first ground point and the first break.

In one embodiment, the main antenna further comprises a third ground point, the first feed point is located between the first ground point and the first break, and the third ground point is located between the first feed point and the first break.

In one embodiment, the main antenna further includes a fourth radiating arm, the fourth radiating arm includes a fourth segment parallel to the metal bottom frame, and a connection portion for connecting the fourth segment and the metal bottom frame, the connection portion is close to the second break, and an end of the fourth segment is located at a position between the first ground point and the first break.

In one embodiment, the fourth radiating arm is provided as a conductive pattern.

In one embodiment, the main antenna further includes a switch assembly electrically connected to the first grounding point, and a plurality of branches electrically connected to the switch assembly, each branch being used for adjusting an operating frequency band of the main antenna.

According to a second aspect of the embodiments of the present disclosure, there is provided a mobile terminal including the antenna assembly of any of the embodiments of the first aspect.

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

the technical scheme that this disclosure provided, can set up the first feed point of main antenna in the one side that is close to first broken joint, and set up the radiation arm of wiFi antenna in the one side that is close to the second broken joint, because first broken joint and second broken joint distribute in the relative both sides of metal underframe, and the terminal point of the second radiation arm of wiFi antenna is parallel or keep away from the direction of metal underframe, so alright reduce the current coupling between wiFi antenna and the main antenna, in order to guarantee that two single antennas have good performance simultaneously can also ensure that the isolation between two antennas promotes to some extent, thereby make the interference between two single antennas reduce.

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 incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a first schematic diagram illustrating a structure of an antenna assembly according to an exemplary embodiment;

FIG. 2 is a structural schematic diagram two of an antenna assembly shown in accordance with an exemplary embodiment;

FIG. 3 is a schematic diagram of a third configuration of an antenna assembly shown in accordance with an exemplary embodiment;

FIG. 4 is a structural schematic diagram four of an antenna assembly shown in accordance with an exemplary embodiment;

FIG. 5 is a schematic diagram of a fifth configuration of an antenna assembly shown in accordance with an exemplary embodiment;

FIG. 6 is a schematic diagram six of an antenna assembly shown in accordance with an exemplary embodiment;

fig. 7 is a block diagram illustrating a structure for a mobile terminal according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The technical solution provided by the embodiments of the present disclosure relates to a mobile terminal, and in particular to an antenna assembly in a mobile terminal, at present, a trend of development of a mobile terminal device such as a mobile phone has gradually evolved into a design mode of a large electric quantity and a full screen, which may cause clearance reduction and spatial compression of an antenna of the mobile phone, thereby bringing a great challenge to design of the antenna, meanwhile, functions of the mobile phone are more and more diversified, and a frequency band range covered by the mobile phone is more and more full, and thus, the number of antennas of the mobile phone is gradually increased, based on which, contradiction between the reduction of the design space and the increase of the number of antennas may cause reduction of isolation between the antennas, thereby affecting performance of each antenna, in related art, an antenna assembly of the mobile phone may include at least a main antenna and a WiFi antenna, the main antenna may employ a metal loop at a bottom of the mobile phone and combine with a switch assembly to realize switching of each frequency band, while the WiFi antenna may be set as a WiFi (Multiple-Input Multiple-Output Multiple-MIMO system) antenna, and may be set as a further, a mobile phone antenna having a relatively poor isolation between a USB 2 antenna, and a bottom end of a USB 2, which may be set near a USB camera, and a bottom frame of a USB 2, so that a bottom of a WiFi antenna may be set as a bottom of a mobile phone may be relatively broken metal loop, thereby, a bottom of a mobile phone, a bottom of a mobile phone antenna, a bottom of a mobile phone antenna, a bottom of a bottom band of a mobile phone may be set up a bottom of a mobile phone, and a mobile phone, thereby, a bottom of a mobile phone, a bottom frame, which may be relatively flat mobile phone, and a bottom of a mobile phone, and a WiFi antenna, so that a WiFi antenna, a bottom of a mobile phone, so that a bottom of a bottom.

Fig. 1 and 2 schematically illustrate a structure of an antenna assembly provided by an embodiment of the present disclosure, which may be applied to a mobile terminal such as a mobile phone. As shown in fig. 1 and fig. 2, the antenna assembly specifically includes a main antenna 101 and a WiFi antenna 102, where the WiFi antenna 102 can be independently used as a WiFi dual-band antenna to cover two frequency bands of WiFi 2.4G (2.4 to 2.48GHz) and WiFi 5G (5.15 to 5.85GHz), and certainly can also be used as a secondary antenna of a WiFi MIMO antenna, and the WiFi MIMO antenna also includes a main antenna, which is not described in detail in this embodiment.

Specifically, the main antenna 101 may include a metal bottom frame 1010 as a first radiating arm, a first gap 1011 and a second gap 1012 provided in the metal bottom frame 1010, and a first feed 1013 and a first ground 1014. The first gap 1011 and the second gap 1012 are respectively located at two sides of the metal bottom frame 1010, and specifically located at two sides of the USB interface of the mobile terminal, the first feed point 1013 and the first ground point 1014 are disposed near the side where the first gap 1011 is located, for example, the first gap 1011 is located at the right side of the USB interface, the second gap 1012 is located at the left side of the USB interface, and at this time, the first feed point 1013 and the first ground point 1014 are both disposed at the right side of the USB interface. It should be noted that: the metal bottom frame 1010 in this embodiment refers to a bottom area of the terminal metal frame, that is, a linear area at the bottom side, and at this time, the first broken seam 1011 and the second broken seam 1012 may be located in the linear area, or may also be located in a rounded area bent upward from the linear area, which is not limited in this embodiment. Therefore, the main antenna 101 in this embodiment can be formed by using the metal bottom frame 1010 of the mobile terminal, that is, the main antenna 101 is formed by using the broken ring structure of the metal bottom frame 1010.

Specifically, the WiFi antenna 102 may include a second radiating arm 1021, a third radiating arm 1022, a second feed point 1023 and a second ground point 1024, where an end of the second radiating arm 1021 and an end of the third radiating arm 1022 intersect in a predetermined area, and the second feed point 1023 and the second ground point 1024 are disposed in the predetermined area. The second radiating arm 1021 and the third radiating arm 1022 are disposed near the second gap 1012, the length of the second radiating arm 1021 is greater than the length of the third radiating arm 1022, and the end of the second radiating arm 1021 is directed to a direction parallel to or away from the metal bottom frame 1010, for example, the end of the second radiating arm 1021 shown in fig. 1 is directed to a direction parallel to the metal bottom frame 1010, or the end of the second radiating arm 1021 shown in fig. 2 is directed to a direction away from the metal bottom frame 1010. In this embodiment, as the length of the second radiating arm 1021 is greater than that of the third radiating arm 1022, the second radiating arm 1021 is a WiFi 2.4G antenna branch with a lower frequency, and the third radiating arm 1022 is a WiFi 5G antenna branch with a higher frequency. It should be noted that: the WiFi antenna 102 may be disposed on an antenna support of the mobile terminal, for example, an FPC (Flexible Printed Circuit) is used to form the second radiation arm 1021 and the third radiation arm 1022. It can be seen that the WiFi antenna 102 in this embodiment can be formed by using an FPC on the antenna mount.

Based on the above structure, according to the technical scheme provided by the embodiment of the present disclosure, the first feed point 1013 of the main antenna 101 is disposed at one side close to the first gap 1011, and the radiation arm of the WiFi antenna 102 is disposed at one side close to the second gap 1012, because the first gap 1011 and the second gap 1012 are respectively located at two opposite sides of the metal bottom frame 1010, and the end of the second radiation arm 1021 in the WiFi antenna 102 points to a direction parallel to or away from the metal bottom frame 1010, the coupling between the WiFi antenna 102 and the main antenna 101 can be reduced, so that while the good performance of the two single antennas is ensured, the isolation between the two antennas can be improved, and the interference between the two single antennas can be reduced.

In this exemplary embodiment, the WiFi antenna 102 is disposed near the side where the second break 1012 is located, for example, the left side of the USB interface of the mobile terminal. The implementation of the WiFi antenna 102 is exemplarily described below with reference to fig. 1 to 6.

In one embodiment, referring to fig. 1, 3 and 4, an end of the second radiating arm 1021 and an end of the third radiating arm 1022 intersect in a predetermined area, where the second feed point 1023 and the second ground point 1024 are located, the second feed point 1023 is close to the first gap 1011, such as a right side of the mobile terminal, the second ground point 1024 is close to the second gap 1012, such as a left side of the mobile terminal, specifically, the second radiating arm 1021 is parallel to the metal bottom frame 1010 and extends in a direction pointing from the second gap 1012 to the first gap 1011, the third radiating arm 1021 is perpendicular to the metal bottom frame 1010 and extends in a direction pointing from the predetermined area to the metal bottom frame 1010, and the second radiating arm 1021, the third radiating arm 1022, the second feed point 1023 and the second ground point 1024 together form an IFA (Inverted-F) antenna, wherein the second radiating arm 1021, the third radiating arm 1022, the second feed point 1023 and the second ground point 1024 together form an IFA (Inverted-F) antenna 1022, a main radiating branch antenna 352, a branch antenna 365, a good isolation between the WiFi antenna 1022 and a WiFi antenna branch antenna 35, a good radiating antenna branch distance is ensured when the WiFi antenna 12, B2, B3, B5, and G2, c 3, c 3, c.

In another embodiment, referring to fig. 2, 5 and 6, an end of the second radiating arm 1021 and an end of the third radiating arm 1022 intersect in a predetermined area, where the second feed point 1023 and the second ground point 1024 are located, the second feed point 1023 is close to the first break 1011, such as a right side of the mobile terminal, and the second ground point 1024 is close to the second break 1012, such as a left side of the mobile terminal, specifically, with the predetermined area as a starting point, the second radiating arm is located on a side of the predetermined area close to the metal bottom frame 1010, the second radiating arm 1021 includes a first section, a second section and a third section, the first section is connected to the predetermined area, the second section is connected between the first section and the third section, the first section and the third section are both perpendicular to the metal bottom frame 1010, and an end of the third section points away from the metal bottom frame 1010, the third radiating arm 1022 is parallel to the metal bottom frame 1010 and extends along a direction pointing to the first break 1012, and an end of the second radiating arm 1022 is pointing away from the metal bottom frame 1010, and an end of the third radiating arm 1022B 2, 35, a branch structure of the WiFi antenna 1023B 2, a branch structure capable of obtaining good radiation between the WiFi antenna radiation isolation between the WiFi antenna 1023, wherein the antenna, B2, B3, and B3, B3, B.

It should be noted that: the above structure is merely an exemplary illustration of the WiFi antenna 102, and the position of the feed point, the position of the ground point, and the position of the radiating arm may all be varied, which is not limited in this embodiment, but it is within the protection scope of the present disclosure as long as the WiFi 2.4G antenna branches are designed to be parallel or the end thereof is far away from the main antenna.

In this exemplary embodiment, the main antenna 101 may be formed by a broken ring structure of the metal bottom frame 1010 in the mobile terminal. The implementation of the main antenna 101 is exemplarily described below with reference to fig. 1 to 6.

In an embodiment, referring to fig. 1 and 2, a first broken seam 1011 and a second broken seam 1012 are respectively disposed on the right and left sides of a metal bottom frame 1010, a first feed point 1013 and a first ground point 1014 are disposed between the two broken seams, the first feed point 1013 is close to the first broken seam 1011, and the first ground point 1014 is close to the second broken seam 1012, specifically, the first feed point 1013 may be electrically connected to a feed point on an antenna support through a first elastic sheet, the first ground point 1014 may be electrically connected to a ground point on the antenna support through a second elastic sheet, the metal bottom frame 1010, the first broken seam 1011 and the second broken seam 1012, and the first feed point 1013 and the first ground point 1014 together form an IFA antenna, a matching circuit may be further disposed between the first ground point 1014 and a ground point of a main board, the matching circuit includes a plurality of branches and a Switch component for switching between the plurality of branches, such as SP 4-Pole-4-thru Switch, each branch may be respectively disposed with different values, so as to achieve a Switch between the plurality of traces, so as to achieve a good working frequency band effect (e.g, a good coverage of the WiFi antenna, a WiFi antenna 102, a WiFi antenna, and a WiFi antenna covering, a WiFi antenna, and a WiFi antenna, a WiFi antenna covering, and a WiFi antenna covering, a.

In another embodiment, referring to fig. 3 and 5, a first gap 1011 and a second gap 1012 are respectively disposed on the right and left sides of the metal bottom frame 1010, the main antenna 101 further includes a third ground point 1015, the first feed point 1013, the first ground point 1014 and the third ground point 1015 are disposed between the two gaps, the first ground point 1014 is close to the second gap 1012, the third ground point 1015 is close to the first gap 1011, the first feed point 1013 is disposed between the first ground point 1014 and the third ground point 1015, specifically, the first feed point 1013 is electrically connected to the feed point 1014 on the antenna support through the first elastic sheet, the first ground point is electrically connected to the ground point on the antenna support through the second elastic sheet, the third ground point 1015 is electrically connected to the ground point on the antenna support through the third elastic sheet, the metal bottom frame 1010, the first gap 1011 and the second gap 1012, the first feed point 1013, the first ground point 1014 and the third ground point 1014, and the third branch circuit jointly form an IFA antenna, the IFA antenna has a ground feeding structure, thereby obtaining good head test performance between the first ground point and the ground point, the main antenna 101, the ground point, the main switch 102 and the main antenna 102 may be further used for increasing the frequency band matching effect of the main antenna 102, and the main antenna may further include a plurality of the main switch for increasing the main antenna 102 and the main antenna.

In another embodiment, referring to fig. 4 and 6, a first gap 1011 and a second gap 1012 are respectively disposed on the right and left sides of the metal bottom frame 1010, the main antenna 101 may further include a fourth radiating arm 1016, the fourth radiating arm 1016 includes a fourth section parallel to the metal bottom frame 1010 and a connecting portion for connecting the fourth section and the metal bottom frame 1010, the connecting portion is disposed between the first gap 1011 and the second gap 1012 and is close to the second gap 1012, the first feed 1013 is connected to the end of the fourth section and corresponds to a position between the first ground 1014 and the first gap 1011, specifically, the fourth radiating arm 1016 may be disposed as a conductive pattern such as a L DS pattern, the first feed 1013 is disposed at the end of the L DS pattern and is disposed on the antenna support, the first ground 1014 may be electrically connected to a ground on the antenna support by a second spring, the metal bottom frame 1010, the first gap 1011 and the second gap 1012, the fourth radiating arm 1016, the first feed 1013 and the first feed 1013 are electrically connected to a ground on the antenna support, the main antenna support may further include a plurality of switches 54 for increasing the working frequency band of the main antenna 101, the main antenna 101 may further include a plurality of switches 14, a plurality of switches for increasing the working frequency band matching effect of the main antenna 102 and a plurality of the main antenna 102.

The embodiment of the disclosure further provides a mobile terminal, which includes the antenna assembly in the above embodiment, the antenna assembly includes a main antenna and a WiFi dual-frequency antenna, and a good isolation is provided between the two antennas, so that the antenna assembly can be well applied to a full-screen intelligent mobile terminal.

Fig. 7 is a block diagram illustrating a configuration for a mobile terminal, such as a mobile phone, a game console, a tablet device, a personal digital assistant, etc., according to an exemplary embodiment.

The apparatus 70 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.

The processing component 702 generally controls overall operation of the device 70, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 702 may include one or more processors 720 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 702 may include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

The memory 704 is configured to store various types of data to support operations at the device 70. Examples of such data include instructions for any application or method operating on the device 70, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 may be implemented by any type or combination of volatile or non-volatile memory devices 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 disks.

The power supply component 706 provides power to the various components of the device 70. The power components 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 70.

The multimedia component 708 includes a screen that provides an output interface between the device 70 and a user, in some embodiments, the screen may include a liquid crystal display (L CD) and a Touch Panel (TP). if the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.

The audio component 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 70 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 704 or transmitted via the communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 714 includes one or more sensors for providing various aspects of status assessment for the device 70. For example, the sensor assembly 714 may detect an open/closed state of the device 70, the relative positioning of the components, such as a display and keypad of the device 70, the sensor assembly 714 may also detect a change in the position of the device 70 or a component of the device 70, the presence or absence of user contact with the device 70, the orientation or acceleration/deceleration of the device 70, and a change in the temperature of the device 70. The sensor assembly 714 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 716 is configured to facilitate wired or wireless communication between the apparatus 70 and other devices. The device 70 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 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 an exemplary embodiment, the apparatus 70 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), programmable logic devices (P L D), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 704 comprising instructions, executable by the processor 720 of the device 70 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited only by the attached claims.

Claims

1. An antenna assembly comprising a main antenna and a WiFi antenna;

2. The antenna assembly of claim 1, wherein the second radiating arm extends parallel to the metal bottom frame and in a direction from the second break toward the first break; the third radiation arm is perpendicular to the metal bottom frame and extends along a direction from the preset area to the metal bottom frame.

3. The antenna assembly of claim 1, wherein the second radiating arm is located on a side of the predetermined area near the metal bottom frame, the second radiating arm includes a first section, a second section, and a third section, the first section is connected to the predetermined area, the second section is connected between the first section and the third section, the first section and the third section are perpendicular to the metal bottom frame, and an end of the third section points in a direction away from the metal bottom frame; the third radiation arm is parallel to the metal bottom frame and extends along the direction from the second broken joint to the first broken joint.

4. The antenna assembly of any one of claims 1-3, wherein a shortest distance between the primary antenna and the WiFi antenna is 1-3 cm.

5. The antenna assembly of claim 1, wherein the first feed point is located between the first ground point and the first break.

6. The antenna assembly of claim 1, wherein the primary antenna further comprises a third ground point, the first feed point being located between the first ground point and the first break, the third ground point being located between the first feed point and the first break.

7. The antenna assembly of claim 1, wherein the main antenna further comprises a fourth radiating arm comprising a fourth segment parallel to the metal bottom frame, and a connection for connecting the fourth segment to the metal bottom frame, the connection being proximate to the second break, the fourth segment terminating at a location between the first ground point and the first break.

8. The antenna assembly of claim 6, wherein the fourth radiating arm is provided as a conductive pattern.

9. The antenna assembly of any one of claims 5-8, wherein the main antenna further comprises a switch assembly electrically connected to the first ground point, and a plurality of branches electrically connected to the switch assembly, each branch for adjusting an operating frequency band of the main antenna.

10. A mobile terminal, characterized in that it comprises an antenna assembly according to any of claims 1-9.