Antenna assembly and mobile terminal

Abstract

An antenna assembly, which is applied to a mobile terminal of a WWAN version or a mobile terminal of a WLAN version, i.e., the structure of the same antenna assembly being applicable to mobile terminals of different versions. When the antenna assembly is applied to a mobile terminal of a WLAN version, the antenna assembly uses a first antenna radiator, which transmits and receives signals in a Wi-Fi 2.4G band, a Wi-Fi 5G band and a GPS band in the WWAN version, to only transmit and receive signals of the GPS band, and additionally uses a second antenna radiator to transmit and receive signals of the Wi-Fi 2.4G band and the Wi-Fi 5G band.

Description

Antenna assembly and mobile terminal

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 15, 2023, with application number 202311028421.0 and invention name “Antenna Assembly and Mobile Terminal”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of antenna technology, and in particular to an antenna assembly and a mobile terminal. Background Art

[0003] Mobile terminals, such as tablets or smart watches, can be roughly divided into two versions, namely WLAN (Wireless Local Area Networks) version and WWAN (Wireless Wide Area Network) version. Among them, the WLAN version means that it can only connect to the Internet via WiFi, and the WWAN version means that it can connect to the Internet via WiFi and cellular data. The WLAN version of the mobile terminal only has one GPS / WiFi 2.4G / WiFi 5G three-in-one antenna, while the WWAN version of the mobile terminal not only has GPS / WiFi 2.4G / WiFi 5G three-in-one antenna, but also multiple antennas supporting 2G / 3G / 4G / 5G frequency bands. Technical issues

[0004] In WLAN versions of mobile terminals, signals are mainly transmitted through GPS or WiFi. However, the GPS / WiFi 2.4G / WiFi 5G three-in-one are currently concentrated on the same antenna, which makes debugging difficult. In addition, for this antenna, it needs to be compatible with both the GPS band and the WiFi band, so the antenna performance of each band is reduced. Technical Solutions

[0005] In a first aspect, an embodiment of the present application provides an antenna assembly, which is applied to a WWAN version mobile terminal or a WLAN version mobile terminal, and the antenna assembly includes:

[0006] A metal middle frame is provided with a plurality of fractures, and the plurality of fractures divide the metal middle frame into a first antenna radiator and a second antenna radiator;

[0007] When the antenna assembly is applied to a WWAN version of a mobile terminal, the first antenna radiator is used to transmit and receive signals in the GPS frequency band, the WiFi 2.4G frequency band, and the WiFi 5G frequency band;

[0008] When the antenna assembly is applied to a WLAN version of a mobile terminal, the first antenna radiator is used to transmit and receive signals in the GPS frequency band, and the second antenna radiator is used to transmit and receive signals in the WiFi 2.4G frequency band and the WiFi 5G frequency band.

[0009] In a second aspect, an embodiment of the present application further provides a mobile terminal, comprising an antenna assembly, wherein the antenna assembly is applied to a WWAN version mobile terminal or a WLAN version mobile terminal, and the antenna assembly comprises:

[0010] A metal middle frame is provided with a plurality of fractures, and the plurality of fractures divide the metal middle frame into a first antenna radiator and a second antenna radiator;

[0011] When the antenna assembly is applied to a WWAN version of a mobile terminal, the first antenna radiator is used to transmit and receive signals in the GPS frequency band, the WiFi 2.4G frequency band, and the WiFi 5G frequency band;

[0012] When the antenna assembly is applied to a WLAN version of a mobile terminal, the first antenna radiator is used to transmit and receive signals in the GPS frequency band, and the second antenna radiator is used to transmit and receive signals in the WiFi 2.4G frequency band and the WiFi 5G frequency band. Beneficial effects

[0013] The antenna assembly and mobile terminal provided in the embodiments of the present application are applicable to either a WWAN version of a mobile terminal or a WLAN version of a mobile terminal, i.e., the same antenna assembly structure can be applied to mobile terminals of different versions. The antenna assembly includes a metal middle frame provided with multiple slits, which divide the metal middle frame into a first antenna radiator and a second antenna radiator. When the antenna assembly is applied to a WLAN version of a mobile terminal, the first antenna radiator of the antenna assembly, which transmits and receives signals in the WiFi 2.4G band, WiFi 5G band, and GPS band in the WWAN version, is only used to transmit and receive signals in the GPS band, while the second antenna radiator is used to transmit and receive signals in the WiFi 2.4G band and WiFi 5G band. The antenna assembly provided in the present application can reduce the difficulty of debugging the three frequency bands of GPS, WiFi 2.4G, and WiFi 5G on a single antenna radiator. The first antenna radiator and the second antenna radiator are used to jointly transmit signals in the GPS, WiFi 2.4G, and WiFi 5G bands, thereby improving the RF performance of the corresponding antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a structural diagram of an antenna arrangement method in the related art provided in an embodiment of the present application.

[0015] FIG2 is a schematic diagram of the structure of a mobile terminal provided in an embodiment of the present application.

[0016] FIG3 is a schematic structural diagram of an antenna assembly provided in an embodiment of the present application.

[0017] FIG4 is a return loss characteristic curve of the GPS radio frequency signal segment of the antenna assembly provided in an embodiment of the present application and the antenna assembly in the related art.

[0018] FIG5 is an antenna efficiency curve of the GPS radio frequency signal segment of the antenna assembly provided in the embodiment of the present application and the antenna assembly in the related art.

[0019] FIG6 is a return loss characteristic curve of the WiFi 2.4G / WiFi 5G radio frequency signal segment of the antenna assembly provided in an embodiment of the present application and the antenna assembly in the related art.

[0020] FIG7 is an antenna efficiency curve of the WiFi 2.4G / WiFi 5G radio frequency signal segment of the antenna assembly provided in an embodiment of the present application and the antenna assembly in the related art.

[0021] FIG8 is a partial enlarged view of point A in FIG3 .

[0022] Implementation Methods of the Application

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0024] Mobile terminals, such as tablets or smart watches, can be roughly divided into two versions, namely WLAN (Wireless Local Area Networks) version and WWAN (Wireless Wide Area Network) version. Among them, the WLAN version means that it can only connect to the Internet via Wi-Fi, and the WWAN version means that it can connect to the Internet via WiFi and cellular data. For the WLAN version of the mobile terminal, there is an antenna for transmitting and receiving signals of the WiFi 2.4G band and the WiFi 5G band, that is, a three-in-one antenna; for the WWAN version of the mobile terminal, there is not only the above-mentioned three-in-one antenna, but also multiple antennas that support transmitting and receiving signals of the 2G band, 3G band, 4G band and 5G band.

[0025] During the manufacturing process, both versions of the existing mobile terminal utilize the same metal midframe structure. The WLAN version primarily transmits signals via GPS or WiFi. However, the GPS / WiFi 2.4G / WiFi 5G trio is currently integrated into a single antenna, making debugging difficult. Furthermore, this antenna must be compatible with both the GPS and WiFi bands, resulting in performance degradation in each band.

[0026] If a new antenna radiator is added to the original antenna assembly, regardless of whether the antenna supports the WWAN version or the WLAN version, the above-mentioned three-in-one antenna radiator will be split into multiple antenna radiators to support multi-band signals respectively. This will undoubtedly increase the cost and occupy the space inside the mobile terminal, which is not conducive to the lightweight and thinning of the mobile terminal.

[0027] However, the WLAN version of the mobile terminal does not need to support the transmission and reception of 2G, 3G, 4G, and 5G frequency bands, even if the WWAN version and the WLAN version use the same metal middle frame structure. Accordingly, in the WLAN version of the mobile terminal, the antenna radiator that supports the transmission and reception of 2G, 3G, 4G, and 5G frequency bands is no longer needed and becomes redundant.

[0028] Specifically, please refer to Figure 1, which is a schematic diagram of the arrangement of antenna radiators in the related art provided by an embodiment of the present application. The antenna assembly structures in both WWAN and WLAN versions of mobile terminals are identical, comprising multiple antenna radiators. The WWAN version of the mobile terminal uses at least eight antenna radiators 1: ANT1, ANT2, ANT3, ANT4, ANT5, ANT6, ANT7, and ANT8; the WLAN version of the mobile terminal uses only one antenna radiator: ANT8. Therefore, the metal middle frame of the WLAN version of the mobile terminal contains unused antenna radiators: ANT1, ANT2, ANT3, ANT4, ANT5, ANT6, and ANT7. Therefore, in the WLAN version of the mobile terminal, the redundant antenna radiators are utilized to separate the three-in-one antenna radiator covering the WiFi 2.4G band, WiFi 5G band, and GPS band into two antenna radiators. This reduces the difficulty of debugging GPS / WiFi 2.4G / WiFi 5G bands on a single antenna and improves the performance of the antennas corresponding to these two antenna radiators.

[0029] Therefore, the present application provides an antenna assembly and a mobile terminal, which are analyzed in detail below with reference to the accompanying drawings.

[0030] Please refer to Figures 2 and 3. Figure 2 is a structural diagram of a mobile terminal provided in an embodiment of the present application, and Figure 3 is a structural diagram of an antenna assembly provided in an embodiment of the present application.

[0031] The antenna assembly 20 provided in this application is applied to a WWAN version mobile terminal 100 or a WLAN version mobile terminal 100. The antenna assembly 20 includes a metal middle frame 10, which is provided with multiple slits 30. The multiple slits 30 divide the metal middle frame 10 into at least a first antenna radiator 21 and a second antenna radiator 22. For example, the metal middle frame 10 has three slits 30, which divide the metal middle frame 10 into the first antenna radiator 21 and the second antenna radiator 22, thereby physically isolating the first antenna radiator 21, the second antenna radiator 22, and other structures of the metal middle frame 10 from each other.

[0032] When the antenna assembly 20 is applied to the WWAN version of the mobile terminal 100, the first antenna radiator 21 is used to transmit and receive signals of the GPS frequency band, the WiFi 2.4G frequency band, and the WiFi 5G frequency band.

[0033] When the antenna assembly 20 is used in a WLAN version of the mobile terminal 100, the first antenna radiator 21 is used to transmit and receive signals in the GPS frequency band, and the second antenna radiator 22 is used to transmit and receive signals in the WiFi 2.4G frequency band and the WiFi 5G frequency band. The first antenna radiator 21 and the second antenna radiator 22 can be made of a metal material such as copper, aluminum, gold, or silver. The first antenna radiator 21 and the second antenna radiator 22 both serve as antenna radiating elements of the mobile terminal 100 to receive and transmit radio frequency signals.

[0034] The mobile terminal 100 includes a device housing and functional components arranged inside the device housing. The device housing may include a back cover, a panel (not shown in the figure) and a metal middle frame. The back cover and the panel are arranged relative to each other, and the metal middle frame is connected between the panel and the back cover to form a complete housing structure.

[0035] Functional components may include a screen, battery, processor, and memory. The processor is used to control the overall operation of the mobile terminal 100, such as operations associated with the display, phone calls, data communications, camera operation, and recording. The processor may include one or more processing cores, which connect various components within the mobile terminal 100 using various interfaces and circuits. The processor performs various functions of the mobile terminal 100 and processes data by running or executing instructions, programs, code sets, or instruction sets stored in the memory, and accessing data stored in the memory.

[0036] The memory is configured to store various types of data to support the operations of the mobile terminal 100. Examples of such data include instructions for any application or method operating on the mobile terminal 100, contact data, phone book data, messages, pictures, videos, etc. The memory may be implemented by any type of volatile or non-volatile storage device, or a 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 disk, or optical disk.

[0037] The screen may be a touch screen, which is mounted on the panel and electrically connected to the processor for receiving input signals from the user. The battery is electrically connected to the processor for powering the mobile terminal 100.

[0038] The GPS frequency bands provided in this application can be divided into the L1 band and the L2 band. The L1 band is primarily for civilian use, with a center frequency of 1575.42 MHz; the L2 band is primarily for military use, with a center frequency of 1227.6 MHz. The first antenna radiator 21 of the antenna assembly 20 provided in this embodiment of the application is a GPS antenna radiator that supports the L1 band.

[0039] In the WiFi 2.4G band and WiFi 5G band provided in this application, in the WiFi 2.4G band, the available bandwidth is 100MHz, ranging from 2.4 to 2.5GHz (2400-2500MHz); in the WiFi 5G band, the available bandwidth is 150MHz, ranging from 5725-5875MHz.

[0040] The metal middle frame 10 can serve as both a support structure and an antenna radiator structure, enabling functional reuse and thus saving space. The metal middle frame 10 is a roughly rectangular frame structure with multiple sides. In some cases, the antenna assembly 20 is located on one side. In other cases, the first antenna radiator 21 and the second antenna radiator 22 of the antenna assembly 20 are located on different sides of the metal middle frame 10, with the first antenna radiator 21 of the antenna assembly 20 being located on one side and the second antenna radiator 22 on the other side. It is worth noting that the positions of the first antenna radiator 21 and the second antenna radiator 22 can be set according to actual conditions to achieve the best antenna radiation effect. However, as described in the relevant technology, both versions of the existing mobile terminal 1 use the same metal middle frame structure, but the WLAN version of the mobile terminal does not need to support the transmission and reception of 2G frequency band, 3G frequency band, 4G frequency band and 5G frequency band signals. Even if the WWAN version and the WLAN version use the same metal middle frame structure, correspondingly, in the WLAN version of the mobile terminal, the antenna radiator that supports the transmission and reception of 2G frequency band, 3G frequency band, 4G frequency band and 5G frequency band signals does not need to be used, and becomes a redundant antenna radiator. In an embodiment of the present application, without changing the metal middle frame 10 of the WWAN version and the WLAN version of the mobile terminal 100, when the antenna assembly 20 is applied to the WLAN version of the mobile terminal 100, the first antenna radiator 21 for transmitting and receiving signals of the WiFi 2.4G frequency band, the WiFi 5G frequency band and the GPS frequency band in the WWAN version is only used to transmit and receive signals of the GPS frequency band, and the second antenna radiator 22 can use redundant antenna radiators, such as selecting the antenna radiator ANT3 in Figure 1 as the first antenna radiator 21 and the antenna radiator ANT8 as the second antenna radiator 22, that is, there is no need to add new antenna radiators, thereby further saving costs.

[0041] Please refer to Figures 4 and 5. Figure 4 is a return loss characteristic curve of the GPS RF signal segment of the antenna assembly provided in the embodiment of the present application and the antenna assembly in the related art. Figure 5 is an antenna efficiency curve of the GPS RF signal segment of the antenna assembly provided in the embodiment of the present application and the antenna assembly in the related art.

[0042] By comparing the parameters of the GPS return loss characteristics (S11) of the relevant antenna assembly, it can be found that the relevant antenna assembly refers to a three-in-one antenna that supports GPS / WiFi 2.4G / WiFi 5G. As shown in Figure 4, L1 is the GPS return loss characteristic curve of the relevant antenna assembly, and L2 is the GPS return loss characteristic curve of the antenna assembly 20 provided in the embodiment of the present application. Because the relevant antenna assembly has to take into account both the WiFi 2.4G and WiFi 5G frequency bands, it cannot be adjusted to the deepest point of resonance like the first antenna radiator 21 in the antenna assembly 20 provided in the embodiment of the present application. As shown in Figure 5, L1 is the antenna efficiency curve of the GPS RF signal segment of the relevant antenna assembly, and L2 is the antenna efficiency curve of the GPS RF signal segment of the antenna assembly 20 provided in the embodiment of the present application. By comparing the GPS antenna radiation efficiency of the relevant antenna assembly, it can be found that the antenna assembly 20 provided in the embodiment of the present application has a radiation efficiency improvement of 1 dB over the relevant antenna assembly.

[0043] Please refer to Figures 6 and 7. Figure 6 is a return loss characteristic curve of the WiFi2.4G / WiFi5G radio frequency signal segment of the antenna assembly provided in the embodiment of the present application and the antenna assembly in the related art. Figure 7 is an antenna efficiency curve of the WiFi2.4G / WiFi5G radio frequency signal segment of the antenna assembly provided in the embodiment of the present application and the antenna assembly in the related art.

[0044] By comparing the characteristic parameters of the WiFi 2.4G / WiFi 5G return loss characteristics (S11) of the relevant antenna assembly, it can be found that the relevant antenna assembly refers to a three-in-one antenna that supports GPS / WiFi 2.4G / WiFi 5G. As shown in Figure 6, L1 is the WiFi 2.4G / WiFi 5G return loss characteristic curve of the relevant antenna assembly, and L2 is the WiFi 2.4G / WiFi 5G return loss characteristic curve of the antenna assembly 20 provided in the embodiment of the present application. Because the relevant antenna assembly needs to take into account the GPS frequency band, the antenna assembly 20 provided in the embodiment of the present application has a deeper resonance than the relevant antenna assembly. As shown in Figure 7, L1 is the antenna efficiency curve of the WiFi 2.4G / WiFi 5G RF signal segment of the relevant antenna assembly, and L2 is the antenna efficiency curve of the WiFi 2.4G / WiFi 5G RF signal segment of the antenna assembly 20 provided in the embodiment of the present application. By comparing the radiation efficiency of the WiFi 2.4G / WiFi 5G antenna with that of related antenna assemblies, it can be found that the radiation efficiency of the antenna assembly 20 provided in the embodiment of the present application is improved by about 1 dB compared with that of the related antenna assemblies.

[0045] The present embodiment provides an antenna assembly 20, a metal middle frame 10, and a mobile terminal 100. The antenna assembly 20 is applied to the mobile terminal 100, which includes the metal middle frame 10, and the antenna assembly 20 is formed on the metal middle frame 10. The antenna assembly 20 includes a first antenna radiator 21 and a second antenna radiator 22. The electromagnetic wave signals transmitted and received by the first antenna radiator 21 cover the GPS frequency band, while the electromagnetic wave signals transmitted and received by the second antenna radiator 22 cover the WiFi 2.4G frequency band and the WiFi 5G frequency band. The first antenna radiator 21 and the second antenna radiator 22 are isolated from each other. Thus, the antenna assembly 20 separates the three-in-one antenna radiator covering the WiFi 2.4G frequency band, the WiFi 5G frequency band, and the GPS frequency band into two antenna radiators, reducing the difficulty of debugging the GPS / WiFi 2.4G / WiFi 5G frequency bands on a single antenna and improving the performance of the antennas corresponding to the two antenna radiators.

[0046] In some embodiments, please continue to refer to Figures 2, 3, and 8. Figure 8 is a partial enlarged view of point A in Figure 3. The metal middle frame 10 includes a plurality of side edges connected in sequence. The metal middle frame 10 includes a top edge 11 and a bottom edge 12 arranged opposite to each other along a first direction Y, and a first side edge 13 and a second side edge 14 arranged opposite to each other along a second direction X, where the first direction Y is perpendicular to the second direction. The first antenna radiator 21 and the second antenna radiator 22 are formed on the top edge 11. When the mobile terminal 100 is a tablet, the camera of the mobile terminal 100 is also arranged at a corresponding position on the top edge 11.

[0047] In foreseeable scenarios, the mobile terminal 100 is a tablet that is mostly used in landscape orientation. When the mobile terminal 100 is in landscape orientation, the top edge 11 of the mobile terminal 100 is usually facing the sky, the camera is located in the middle of the top edge, the charging port is located in the middle of the second side edge 14, and the bottom edge 12 of the mobile terminal 100 faces the ground. When the display plane of the mobile terminal 100 is facing the user, that is, when the back cover is facing away from the user, the first side edge 13 is located on the left side of the user, and the second side edge 14 is located on the right side of the user. At this time, the first antenna radiator 21 and the second antenna radiator 22 are not blocked, and the signal transmission and reception effects of each frequency band are good.

[0048] The first antenna radiator 21 and the second antenna radiator 22 extend along a second direction X, and are arranged sequentially along the second direction X. The first antenna radiator 21 has a first grounding point and a first feeding point. The first grounding point is close to the second antenna radiator 22, and the first feeding point is far from the second antenna radiator 22, thereby isolating the first antenna radiator 21 from the second antenna radiator 22. Because the first grounding point of the first antenna radiator 21 is close to the second antenna radiator 22, the first grounding point serves to isolate the radio frequency signals transmitted and received by the second antenna radiator 22. Thus, the first antenna radiator 21 and the second antenna radiator 22 are isolated from each other, preventing mutual interference during operation. Furthermore, a gap is provided between the first antenna radiator 21 and the second antenna radiator 22 to provide physical isolation, further preventing mutual interference between the first antenna radiator 21 and the second antenna radiator 22. The first antenna radiator 21 has a first end 211 and a second end 212 opposite to each other along the second direction X, the first end 211 is close to the first side 13, and the second end 212 is close to the second side 14, and a first grounding point and a first feeding point of the first antenna radiator 21 are arranged between the first end 211 and the second end 212, the first grounding point of the first antenna radiator 21 is close to the second side 14, and the first feeding point of the first antenna radiator 21 is close to the first side 13.

[0049] The second antenna radiator 22 has a second grounding point and a second feeding point. The second grounding point is close to the first antenna radiator 21, and the second feeding point is away from the first antenna radiator 21. The second antenna radiator 22 extends along the second direction X and has a third end 221 and a fourth end 222 that are opposite each other along the second direction X. The third end 221 is close to the first antenna radiator 21, and the fourth end 222 is close to the second side 14. The third end 221 can be provided with the second grounding point of the second antenna radiator 22, and the second feeding point of the second antenna radiator 22 is provided between the third end 221 and the fourth end 222. Because the first grounding point of the first antenna radiator 21 and the second grounding point of the second antenna radiator 22 are close to each other, the second grounding points serve to isolate the radio frequency signals transmitted and received by the first antenna radiator 21, so that the first and second antenna radiators 21, 22 do not interfere with each other during operation.

[0050] In some embodiments, the distance between the second end 212 and the third end 221 is greater than 0.5 mm and less than or equal to 2 mm. It is understood that the grounding point of the first antenna radiator 21 is close to the second antenna radiator 22, that is, the grounding point of the first antenna radiator 21 is close to the second end 212, and the grounding point of the second antenna radiator 22 is close to the first antenna radiator 21, that is, the grounding point of the second antenna radiator 22 is close to the third end 221. Because the grounding points of the first antenna radiator 21 and the second antenna radiator 22 are close, the first antenna radiator 21 and the second antenna radiator 22 do not interfere with each other during operation. Furthermore, a gap is provided between the first antenna radiator 21 and the second antenna radiator 22 to create physical isolation and prevent mutual interference between the first antenna radiator 21 and the second antenna radiator 22. However, since the metal middle frame 10 also needs to play a supporting role, that is, it needs to ensure strength, the distance between the second end 212 and the third end 221 is less than or equal to 2 mm, which can not only play a role of physical isolation, but also will not affect the strength of the metal middle frame 10 and reduce reliability. That is, to overcome the problem that the distance between the second end 212 and the third end 221 is too small, which is not conducive to the radiation effect of the antenna assembly 20, and the distance is too wide, which reduces reliability and causes easy bending, affecting the appearance of the mobile terminal 100.

[0051] In some embodiments, the first antenna radiator 21 is closer to the first side edge 13 than the second antenna radiator 22; the distance between the first antenna radiator 21 and the first side edge 13 is less than or equal to 20 mm, thereby further improving the radiation performance of the antenna assembly 20. It is understood that regardless of whether the mobile terminal 100 is in landscape or portrait orientation, when the first antenna radiator 21 and the second antenna radiator 22 are located closer to the first side edge 13 on the top edge 11, there is no obstruction. For example, in some scenarios, when the mobile terminal 100 is placed in landscape orientation on a desktop, the top edge 11 is generally facing the sky. In this case, the first antenna radiator 21 and the second antenna radiator 22 are not obstructed, and the signal transmission and reception performance of various frequency bands is good. In other scenarios, when the mobile terminal 100 is held in portrait orientation, the first antenna radiator 21 and the second antenna radiator 22 are located in the upper half of the mobile terminal and are not easily obstructed by the hand, thereby providing good signal transmission and reception performance of various frequency bands.

[0052] In some embodiments, the length of the first antenna radiator 21 is greater than or equal to 20 mm, and the length of the second antenna radiator 22 is greater than or equal to 20 mm. The width of the first antenna radiator 21 and the second antenna radiator 22 are both in the range of 2 mm to 3 mm. The length of the first antenna radiator 21 and the second antenna radiator 22 are both greater than or equal to 20 mm, ensuring the maximum radiation efficiency of the antenna assembly 20. Of course, different antenna frequency bands require different radiator lengths, and the width and length of the first antenna radiator 21 and the second antenna radiator 22 also depend on the positional relationship between the antenna assembly 20 and other internal components of the mobile terminal 100, as well as the degree of interference caused by other internal components of the mobile terminal 100 to the antenna assembly 20. Those skilled in the art can set the length and width of the first antenna radiator 21 and the second antenna radiator 22 according to actual conditions. In some embodiments, the antenna type corresponding to the first antenna radiator 21 and the second antenna radiator 22 are both IFA antennas (Inverted-F antennas). The first antenna radiator 21 and the second antenna radiator 22 are both strip-shaped structures extending along the second direction X, and the first antenna radiator 21 and the second antenna radiator 22 can both be in the form of IFA. With this form of antenna design, it is relatively easy to control and debug the antenna without requiring a lot of matching to tune the impedance. Please continue to refer to Figures 2 and 3. The present application also provides a metal middle frame 10 for use in a mobile terminal 100. The metal middle frame is provided with a plurality of breaks 30, and the plurality of breaks 30 divide the metal middle frame 10 into at least a first antenna radiator 21 and a second antenna radiator 22. For example, the metal middle frame 10 has three breaks 30, which divide the metal middle frame 10 into the first antenna radiator 21 and the second antenna radiator 22, so as to physically isolate the first antenna radiator 21 and the second antenna radiator 22 from other structures of the metal middle frame 10.

[0053] When the antenna assembly 20 is applied to the WWAN version of the mobile terminal 100, the first antenna radiator 21 is used to transmit and receive signals of the GPS frequency band, the WiFi 2.4G frequency band, and the WiFi 5G frequency band.

[0054] When the antenna assembly 20 is applied to the WLAN version of the mobile terminal 100, the first antenna radiator 21 is used to transmit and receive GPS frequency band signals, and the second antenna radiator 22 is used to transmit and receive WiFi 2.4G frequency band and WiFi 5G frequency band signals.

[0055] It should be noted that the metal middle frame 10 of the embodiment of the present application is the metal middle frame 10 in any of the above embodiments, and therefore has all the same beneficial effects, which will not be described in detail in this embodiment.

[0056] The embodiment of the present application further provides a mobile terminal 100 , which includes the above-mentioned metal middle frame 10 or the above-mentioned antenna assembly 20 .

[0057] It should be noted that the metal middle frame 10 or antenna assembly 20 in the embodiment of the present application is the metal middle frame 10 or antenna assembly 20 in any of the above embodiments. Since the mobile terminal 100 has the above metal middle frame 10 or antenna assembly 20, it has all the same beneficial effects, and this embodiment will not be repeated here.

[0058] In some embodiments, the mobile terminal 100 further includes an insulating middle frame, and the metal middle frame 10 is disposed on the inner surface of the insulating middle frame to provide protection and prevent touch and dirt.

[0059] The antenna assembly 20 and mobile terminal 100 provided in the embodiments of the present application are applicable to either a WWAN version of the mobile terminal 100 or a WLAN version of the mobile terminal 100. That is, the same antenna assembly 20 structure can be applied to different versions of the mobile terminal 100. The antenna assembly 20 includes a metal middle frame 10, which is provided with a plurality of slits 30. The slits 30 divide the metal middle frame 10 into a first antenna radiator 21 and a second antenna radiator 22. When the antenna assembly 20 is applied to the WLAN version of the mobile terminal 100, the first antenna radiator 21 is used only for transmitting and receiving signals in the GPS frequency band, while the second antenna radiator 22 is used for transmitting and receiving signals in the WiFi 2.4G frequency band and the WiFi 5G frequency band. The antenna assembly 20 provided in this application can reduce the difficulty of debugging the three frequency bands of GPS band, WiFi 2.4G band and WiFi 5G band on one antenna radiator, and use the first antenna radiator 21 and the second antenna radiator 22 to jointly realize the signal transmission of GPS band, WiFi2.4G band and WiFi 5G band, thereby improving the RF performance of the corresponding antenna.

[0060] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0062] The above describes in detail the antenna assembly and mobile terminal provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application. Furthermore, those skilled in the art will appreciate that, based on the concepts of the present application, variations in the specific implementation methods and scope of application may occur. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. An antenna assembly, applied to a WWAN version mobile terminal or a WLAN version mobile terminal, the antenna assembly comprising: A metal middle frame, wherein the metal middle frame is provided with a plurality of fractures, and the plurality of fractures divide the metal middle frame into a first antenna radiator and a second antenna radiator; When the antenna assembly is applied to a WWAN version of a mobile terminal, the first antenna radiator is used to send and receive signals of the GPS frequency band, the WiFi 2.4G frequency band and the WiFi 5G frequency band; when the antenna assembly is applied to a WLAN version of a mobile terminal, the first antenna radiator is used to send and receive signals of the GPS frequency band, and the second antenna radiator is used to send and receive signals of the WiFi 2.4G frequency band and the WiFi 5G frequency band.

2. The antenna assembly according to claim 1, wherein: The metal middle frame includes a top edge and a bottom edge arranged opposite to each other along a first direction, and a first side edge and a second side edge arranged opposite to each other along a second direction, wherein the first direction is perpendicular to the second direction; the first antenna radiator and the second antenna radiator are arranged on the top edge.

3. The antenna assembly according to claim 2, wherein: The first antenna radiator and the second antenna radiator extend along the second direction, and the first antenna radiator and the second antenna radiator are distributed in sequence along the second direction; the first antenna radiator has a first grounding point and a first feeding point, the first grounding point is close to the second antenna radiator, and the first feeding point is far away from the second antenna radiator.

4. The antenna assembly according to claim 3, wherein: The second antenna radiator has a second grounding point and a second feeding point, the second grounding point is close to the first antenna radiator, and the second feeding point is far away from the first antenna radiator.

5. The antenna assembly according to claim 4, wherein: The first antenna radiator has a first end and a second end opposite to each other along the second direction, the first end is close to the first side, the second end is close to the second side, the first grounding point and the first feeding point are arranged between the first end and the second end, the first grounding point is close to the second side, and the first feeding point is close to the first side; The second antenna radiator has a third end and a fourth end opposite to each other along the second direction, the third end is close to the first antenna radiator, the fourth end is close to the second side, the third end may be provided with the second grounding point, and the second feeding point is provided between the third end and the fourth end.

6. The antenna assembly according to claim 5, wherein: A distance between the second end and the third end is greater than 0.5 mm and less than or equal to 2 mm.

7. The antenna assembly according to claim 2, wherein: The first antenna radiator is closer to the first side edge than the second antenna radiator; and a distance between the first antenna radiator and the first side edge is less than or equal to 20 mm.

8. The antenna assembly according to claim 1, wherein: A width of the gap between the first antenna radiator and the second antenna radiator is less than or equal to 2 mm.

9. The antenna assembly according to claim 1, wherein: The length of the first antenna radiator is greater than or equal to 20 mm, and the length of the second antenna radiator is greater than or equal to 20 mm.

10. The antenna assembly according to claim 1, wherein: The width of the gap between the first antenna radiator and the second antenna radiator is less than or equal to 2 mm; The length of the first antenna radiator is greater than or equal to 20 mm, and the length of the second antenna radiator is greater than or equal to 20 mm.

11. The antenna assembly according to claim 1, wherein: The width of the first antenna radiator and the second antenna radiator is 2 mm to 3 mm.

12. The antenna assembly according to claim 1, wherein: The antenna types corresponding to the first antenna radiator and the second antenna radiator are both IFA antennas.

13. The antenna assembly according to claim 1, wherein: The first antenna radiator and the second antenna radiator are made of copper, aluminum, gold or silver.

14. The antenna assembly according to claim 1, wherein: The number of the fractures is 3.

15. The antenna assembly according to claim 1, wherein: The metal middle frame is a rectangular frame structure, and the first antenna radiator and the second antenna radiator are respectively located on different sides of the metal middle frame.

16. A mobile terminal, comprising an antenna assembly, wherein the antenna assembly is applied to a WWAN version mobile terminal or a WLAN version mobile terminal, and the antenna assembly comprises: A metal middle frame, wherein the metal middle frame is provided with a plurality of fractures, and the plurality of fractures divide the metal middle frame into a first antenna radiator and a second antenna radiator; When the antenna assembly is applied to a WWAN version of a mobile terminal, the first antenna radiator is used to send and receive signals of a GPS frequency band, a WiFi 2.4G frequency band, and a WiFi 5G frequency band; When the antenna assembly is applied to a WLAN version of a mobile terminal, the first antenna radiator is used to send and receive signals in the GPS frequency band, and the second antenna radiator is used to send and receive signals in the WiFi 2.4G frequency band and the WiFi 5G frequency band.

17. The mobile terminal according to claim 16, wherein: It also includes an insulating middle frame, and the metal middle frame is arranged on the inner surface of the insulating middle frame.

18. The mobile terminal according to claim 16, wherein: The metal middle frame includes a top edge and a bottom edge arranged opposite to each other along a first direction, and a first side edge and a second side edge arranged opposite to each other along a second direction, wherein the first direction is perpendicular to the second direction; the first antenna radiator and the second antenna radiator are arranged on the top edge.

19. The mobile terminal according to claim 18, wherein: It also includes a camera, which is correspondingly arranged at the top edge.

20. The mobile terminal according to claim 16, wherein: It also includes a rear cover plate and a panel, wherein the rear cover plate is arranged opposite to the panel, and the metal middle frame is connected between the rear cover plate and the panel to form a shell structure.

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