CN117410716A - Antenna assembly and mobile terminal - Google Patents

Antenna assembly and mobile terminal Download PDF

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Publication number
CN117410716A
CN117410716A CN202311028421.0A CN202311028421A CN117410716A CN 117410716 A CN117410716 A CN 117410716A CN 202311028421 A CN202311028421 A CN 202311028421A CN 117410716 A CN117410716 A CN 117410716A
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CN
China
Prior art keywords
antenna
antenna radiator
mobile terminal
radiator
antenna assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311028421.0A
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Chinese (zh)
Inventor
郑旭
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TCL Communication Ningbo Ltd
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TCL Communication Ningbo Ltd
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Filing date
Publication date
Application filed by TCL Communication Ningbo Ltd filed Critical TCL Communication Ningbo Ltd
Priority to CN202311028421.0A priority Critical patent/CN117410716A/en
Publication of CN117410716A publication Critical patent/CN117410716A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation

Abstract

The application provides an antenna assembly and a mobile terminal. The antenna assembly 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 can be applied to mobile terminals of different versions. When the antenna assembly is applied to a mobile terminal in a WLAN version, the antenna assembly transmits and receives signals of a WiFi2.4G frequency band, a WiFi5G frequency band and a GPS frequency band in the WWAN version, and the first antenna radiator is only used for transmitting and receiving signals of the GPS frequency band, and the second antenna radiator is used for transmitting and receiving signals of the WiFi2.4G frequency band and the WiFi5G frequency band. The antenna assembly that this application provided can reduce the debugging degree of difficulty of realizing these three frequency channels of GPS frequency channel, wiFi2.4G frequency channel and wiFi5G frequency channel on an antenna radiator, utilizes first antenna radiator and second antenna radiator to realize GPS frequency channel, wiFi2.4G frequency channel and wiFi5G frequency channel's signal transmission jointly, promotes the radio frequency performance of corresponding antenna.

Description

Antenna assembly and mobile terminal
Technical Field
The present invention relates to the field of antenna technologies, and in particular, to an antenna assembly and a mobile terminal.
Background
In a mobile terminal, such as a tablet or smart watch, two versions, namely a WLAN (Wireless Local Area Networks, wireless local area network) version and a WWAN (Wireless Wide Area Network ) version, may be approximately used. The WLAN version refers to internet connection only through WiFi, and the WWAN version refers to internet connection through WiFi and cellular data. For the mobile terminal of the WLAN version, only one GPS/WiFi 2.4G/WiFi 5G three-in-one antenna is arranged, but the mobile terminal of the WWAN version not only has the GPS/WiFi 2.4G/WiFi 5G three-in-one antenna, but also has other multiple antennas supporting 2G/3G/4G/5G frequency bands and the like.
In the mobile terminal of the WLAN version, signals are mainly transmitted through GPS or WiFi, but the GPS/WiFi 2.4G/WiFi 5G three-in-one is centralized on the same antenna at present, so that the debugging difficulty is high; and for this antenna, it is required to be compatible with the GPS band or the WiFi band at the same time, so the antenna performance of each band is degraded.
Disclosure of Invention
The embodiment of the application provides an antenna assembly and a mobile terminal, wherein the antenna assembly is applied to a mobile terminal in a WWAN version or a mobile terminal in a WLAN version. When the antenna assembly is applied to the mobile terminal of the WLAN version, the antenna assembly can reduce the debugging difficulty of realizing three frequency bands of a GPS frequency band, a WiFi2.4G frequency band and a WiFi5G frequency band on one antenna radiator, and the first antenna radiator and the second antenna radiator are utilized to jointly realize signal transmission of the GPS frequency band, the WiFi2.4G frequency band and the WiFi5G frequency band, so that the radio frequency performance of the corresponding antenna is improved.
The embodiment of the application provides an antenna assembly, which is applied to a mobile terminal in a WWAN version or a mobile terminal in a WLAN version, and comprises:
the metal middle frame is provided with a plurality of fractures, and the metal middle frame is divided into a first antenna radiator and a second antenna radiator by the plurality of fractures;
when the antenna assembly is applied to a mobile terminal of a WWAN version, the first antenna radiator is used for receiving and transmitting signals of a GPS frequency band, a WiFi2.4G frequency band and a WiFi5G frequency band;
when the antenna assembly is applied to a mobile terminal in a WLAN version, the first antenna radiator is used for receiving and transmitting signals of a GPS frequency band, and the second antenna radiator is used for receiving and transmitting signals of a WiFi2.4G frequency band and a WiFi5G frequency band.
In some embodiments, the metal center includes top and bottom edges disposed opposite each other along a first direction, and first and second side edges disposed opposite each other along a second direction, the first direction being perpendicular to the second direction; the first antenna radiator and the second antenna radiator are arranged on the top edge.
In some embodiments, the first antenna radiator and the second antenna radiator extend along a second direction, and the first antenna radiator and the second antenna radiator are sequentially distributed along the second direction; the first antenna radiator is provided with 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.
In some embodiments, the second antenna radiator has a second ground point that is proximate to the first antenna radiator and a second feed point that is distal to the first antenna radiator.
In some embodiments, the first antenna radiator is closer to the first side than the second antenna radiator; the distance between the first antenna radiator and the first side edge is less than or equal to 20mm.
In some embodiments, the width of the break between the first antenna radiator and the second antenna radiator is less than or equal to 2mm.
In some embodiments, the length of the first antenna radiator is 20mm or more and the length of the second antenna radiator is 20mm or more.
In some embodiments, the antenna types corresponding to the first antenna radiator and the second antenna radiator are IFA antennas.
The embodiment of the application also provides a mobile terminal which comprises the antenna assembly.
In some embodiments, the mobile terminal further comprises an insulating middle frame, and the metal middle frame is disposed on an inner surface of the insulating middle frame.
The antenna assembly and the mobile terminal provided by the embodiment of the application are applied to a mobile terminal of a WWAN version or a mobile terminal of a WLAN version, namely, the structure of the same antenna assembly can be applied to mobile terminals of different versions. The antenna assembly comprises a metal middle frame, wherein a plurality of fractures are formed in the metal middle frame, and divide the metal middle frame into a first antenna radiator and a second antenna radiator. When the antenna assembly is applied to a mobile terminal in a WLAN version, the antenna assembly will send and receive signals of a WiFi2.4G frequency band, a WiFi5G frequency band and a GPS frequency band in the WWAN version, the first antenna radiator is only used for sending and receiving signals of the GPS frequency band, and the second antenna radiator is used for sending and receiving signals of the WiFi2.4G frequency band and the WiFi5G frequency band. The antenna assembly that this application provided can reduce the debugging degree of difficulty of realizing these three frequency channels of GPS frequency channel, wiFi2.4G frequency channel and wiFi5G frequency channel on an antenna radiator, utilizes first antenna radiator and second antenna radiator to realize GPS frequency channel, wiFi2.4G frequency channel and wiFi5G frequency channel's signal transmission jointly, promotes the radio frequency performance of corresponding antenna.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an antenna arrangement in the related art according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application.
Fig. 4 is a return loss characteristic curve of a GPS rf signal segment of an antenna assembly according to an embodiment of the present application and an antenna assembly in the related art.
Fig. 5 is an antenna efficiency curve of a GPS rf signal segment of an antenna assembly and an antenna assembly according to an embodiment of the present application.
Fig. 6 is a return loss characteristic curve of a WiFi2.4G/WiFi 5G radio frequency signal segment of an antenna assembly according to an embodiment of the present application and an antenna assembly in the related art.
Fig. 7 is an antenna efficiency curve of a WiFi2.4G/WiFi 5G rf signal segment of an antenna assembly according to an embodiment of the present application and an antenna assembly according to a related art.
Fig. 8 is a partial enlarged view at a of fig. 3.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In a mobile terminal, such as a tablet or smart watch, two versions, namely a WLAN (Wireless Local Area Networks, wireless local area network) version and a WWAN (Wireless Wide Area Network ) version, may be approximately used. The WLAN version refers to internet connection only through Wi-Fi, and the WWAN version refers to internet connection through WiFi connection and cellular data connection. For a mobile terminal in a WLAN version, an antenna is used for receiving and transmitting signals of a WiFi2.4G frequency band and a WiFi5G frequency band, namely a three-in-one antenna; for WWAN versions of mobile terminals, there are not only the three-in-one antennas, but also other multiple antennas supporting the transmission and reception of signals in the 2G band, 3G band, 4G band, and 5G band.
In the manufacturing process, both versions of the existing mobile terminal adopt the same metal middle frame structure. In the mobile terminal of the WLAN version, signals are transmitted mainly through GPS or WiFi, but the GPS/WiFi 2.4G/WiFi 5G three-in-one is centralized on the same antenna at present, so that the debugging difficulty is high; and for this antenna, it is necessary to be compatible with both the GPS band and the WiFi band, so performance of each band is degraded.
If the antenna radiator is newly added on the original antenna assembly, the three-in-one antenna radiator is split into a plurality of antenna radiators no matter supporting the antenna of the WWAN version or the WLAN version, and the antenna radiators respectively support signals of multiple frequency bands, the cost is certainly increased, the space inside the mobile terminal is occupied, and the lightening and thinning of the mobile terminal are not facilitated.
However, the mobile terminal of the WLAN version does not need to support transceiving signals of the 2G band, the 3G band, the 4G band and the 5G band, even though the WWAN version and the WLAN version adopt the same metal middle frame structure. Correspondingly, in the mobile terminal of the WLAN version, the antenna radiator supporting the transmission and reception of signals in the 2G frequency band, the 3G frequency band, the 4G frequency band and the 5G frequency band is not needed to be used, and becomes an extra antenna radiator.
Specifically, referring to fig. 1, fig. 1 is a schematic structural diagram of an antenna radiator arrangement in the related art according to an embodiment of the present application. The structure of the antenna assembly in the mobile terminal of the WWAN version and the WLAN version is the same, and the antenna assembly includes a plurality of antenna radiators. At least 8 antenna radiators 1 are used by mobile terminals of WWAN version: ANT1, ANT2, ANT3, ANT4, ANT5, ANT6, ANT7, and ANT8; mobile terminals of WLAN version use only 1 antenna radiator: ANT8. There is an unused antenna radiator on the metal center of the WLAN version of the mobile terminal: ANT1, ANT2, ANT3, ANT4, ANT5, ANT6, ANT7, so in the mobile terminal of WLAN version, utilize unnecessary antenna radiator, divide into two antenna radiator with covering the trinity antenna radiator of wiFi2.4G frequency channel, wiFi5G frequency channel and GPS frequency channel, reduce the debugging degree of difficulty that realizes three frequency channels of GPS/wiFi 2.4G/wiFi 5G on an antenna, also can promote the performance of these two antenna radiator corresponding antenna.
Accordingly, the present application provides an antenna assembly and a mobile terminal, and the following detailed analysis is performed with reference to the accompanying drawings.
Referring to fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application, and fig. 3 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application.
The antenna assembly 20 provided by the application is applied to a mobile terminal 100 in a WWAN version or a mobile terminal 100 in a WLAN version. The antenna assembly 20 comprises a metal center 10 provided with a plurality of breaks 30, the plurality of breaks 30 dividing the metal center 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, and the metal middle frame 10 is divided into a first antenna radiator 21 and a second antenna radiator 22, so as to physically isolate the first antenna radiator 21, the second antenna radiator 22, and other structures of the metal middle frame 10 from each other.
When the antenna assembly 20 is applied to the mobile terminal 100 of the WWAN version, the first antenna radiator 21 is used for receiving and transmitting signals of the GPS band, the WiFi2.4G band and the WiFi5G band.
When the antenna assembly 20 is applied to the mobile terminal 100 of the WLAN version, the first antenna radiator 21 is used for receiving and transmitting signals of the GPS frequency band, and the second antenna radiator 22 is used for receiving and transmitting signals of the WiFi2.4G frequency band and the WiFi5G frequency band.
The first and second antenna radiators 21 and 22 may be made of metal materials such as copper, aluminum, gold, or silver, and the first and second antenna radiators 21 and 22 each serve as an antenna radiating unit of the mobile terminal 100 to receive and transmit radio frequency signals.
The mobile terminal 100 includes a device housing and functional components disposed inside the device housing, where the device housing may include a back cover plate, a panel (not shown in the drawing) and a middle frame disposed opposite to the back cover plate, and the middle frame is connected between the panel and the back cover plate to form a complete housing structure.
Functional components may include a screen, a battery, a processor, memory, and the like. The processor is used to control overall operation of the mobile terminal 100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processor may include one or more processing cores that connect various portions of the overall mobile terminal 100 using various interfaces and lines to perform various functions of the mobile terminal 100 and process data by executing or executing instructions, programs, code sets, or instruction sets stored in memory, and invoking data stored in memory.
The memory is configured to store various types of data to support operation at the mobile terminal 100. Examples of such data include instructions for any application or method operating on the mobile terminal 100, contact data, phonebook data, messages, pictures, videos, 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 screen may be a touch screen mounted to the panel and electrically connected to the processor for receiving input signals from a user. The battery is electrically connected to the processor to power the mobile terminal 100.
The frequency band of the GPS provided by the application can be divided into an L1 frequency band and an L2 frequency band, wherein the L1 frequency band is mainly civil, and the central frequency is 1575.42MHz; the L2 band is mainly military, and the center frequency is 1227.6MHz. The first antenna radiator 21 of the antenna assembly 20 provided in this embodiment is a GPS antenna radiator supporting the L1 frequency band.
In the WiFi2.4G frequency band and the WiFi5G frequency band, the available bandwidth is 100MHz, and the range is 2.4 to 2.5GHz (2400-2500 MHz); in the WiFi5G band, the available bandwidth is 150MHz, and the range is 5725-5875MHz.
The metal middle frame 10 can be used as a supporting structure and also can be used as a structure of an antenna radiator, so that the multiplexing of functions is realized, and the space is further saved. The metal center 10 is generally rectangular in structure having a plurality of sides, and in some cases the antenna assembly 20 is disposed on one side, and in other cases the first antenna radiator 21 of the antenna assembly 20 is disposed on one side and the second antenna radiator 22 is disposed on the other side. It should be noted that, the positions of the first antenna radiator 21 and the second antenna radiator 22 may be set according to the actual situation, so as to achieve the best antenna radiation effect.
However, as described in the related art, both versions of the existing mobile terminal 1 adopt the same metal center structure, but the mobile terminal of the WLAN version does not need to support the transmission and reception of signals of the 2G band, the 3G band, the 4G band and the 5G band, and even if the WWAN version and the WLAN version adopt the same metal center structure, correspondingly, in the mobile terminal of the WLAN version, the antenna radiator supporting the transmission and reception of signals of the 2G band, the 3G band, the 4G band and the 5G band does not need to be used, and becomes an unnecessary antenna radiator. In this embodiment, under the condition that the metal middle frame 10 of the mobile terminal 100 in the WWAN version and the WLAN version is not changed, when the antenna assembly 20 is applied to the mobile terminal 100 in the WLAN version, the first antenna radiator 21 for receiving and transmitting signals in the WiFi2.4G frequency band, the WiFi5G frequency band and the GPS frequency band in the WWAN version is only used for receiving and transmitting signals in the GPS frequency band, and the second antenna radiator 22 may be an extra antenna radiator, for example, the antenna radiator ANT3 in fig. 1 is selected as the first antenna radiator 21 and the antenna radiator ANT8 is selected as the second antenna radiator 22, that is, no additional antenna radiator is needed, thereby further saving the cost.
Referring to fig. 4 and fig. 5, fig. 4 is a return loss characteristic curve of a GPS rf signal section of an antenna assembly according to an embodiment of the present application and an antenna assembly according to a related art, and fig. 5 is an antenna efficiency curve of a GPS rf signal section of an antenna assembly according to an embodiment of the present application and an antenna assembly according to a related art.
As can be seen by comparing with the GPS return loss characteristic (S11) parameters of the relevant antenna assembly, the relevant antenna assembly is a three-in-one antenna supporting GPS/WiFi 2.4G/WiFi 5G. Referring to fig. 4, L1 is a GPS return loss characteristic curve of an associated antenna assembly, and L2 is a GPS return loss characteristic curve of an antenna assembly 20 provided in an embodiment of the present application. The related antenna assembly, due to the consideration of WiFi2.4G and WiFi5G frequency bands, cannot be adjusted to the deepest resonance point as the first antenna radiator 21 in the antenna assembly 20 provided in the embodiment of the present application. Referring to fig. 5, L1 is an antenna efficiency curve of a GPS rf signal segment of an associated antenna assembly, and L2 is an antenna efficiency curve of a GPS rf signal segment of an antenna assembly 20 provided in an embodiment of the present application. As can be seen by comparing the radiation efficiency of the GPS antenna with that of the relevant antenna assembly, the antenna assembly 20 provided in the embodiment of the present application is improved by 1 dB over that of the relevant antenna assembly.
Referring to fig. 6 and fig. 7, fig. 6 is a return loss characteristic curve of a WiFi2.4G/WiFi 5G radio frequency signal section of an antenna assembly and an antenna assembly in related art provided in the embodiment of the present application, and fig. 7 is an antenna efficiency curve of a WiFi2.4G/WiFi 5G radio frequency signal section of an antenna assembly and an antenna assembly in related art provided in the embodiment of the present application.
By comparing with the WiFi2.4G/WiFi 5G return loss characteristic (S11) characteristic parameters of the relevant antenna assembly, the relevant antenna assembly is found to be a three-in-one antenna supporting GPS/WiFi 2.4G/WiFi 5G. Referring to fig. 6, L1 is a WiFi2.4G/WiFi 5G return loss characteristic curve of the relevant antenna assembly, and L2 is a WiFi2.4G/WiFi 5G return loss characteristic curve of the antenna assembly 20 provided in the embodiment of the present application. The antenna assembly 20 provided in the embodiments of the present application is deeper than the resonance of the related antenna assembly due to the consideration of the GPS frequency band. Referring to fig. 7, L1 is an antenna efficiency curve of a WiFi2.4G/WiFi 5G radio frequency signal segment of the relevant antenna assembly, and L2 is an antenna efficiency curve of a WiFi2.4G/WiFi 5G radio frequency signal segment of the antenna assembly 20 provided in the embodiment of the present application. As can be seen by comparing with the WiFi2.4G/WiFi 5G antenna radiation efficiency of the relevant antenna assembly, the antenna assembly 20 provided in the embodiment of the present application is improved by about 1 dB compared with the radiation efficiency of the relevant antenna assembly.
The embodiment of the application provides an antenna assembly 20, a metal middle frame 10 and a mobile terminal 100, wherein the antenna assembly 20 is applied to the mobile terminal 100, the mobile terminal 100 comprises 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 radiator 21, and a second antenna radiator 22, wherein the first antenna radiator 21 receives and transmits electromagnetic wave signals covering the GPS frequency band, the second antenna radiator 22 receives and transmits electromagnetic wave signals covering the WiFi2.4G frequency band and the WiFi5G frequency band, and the first antenna radiator 21 and the second antenna radiator 22 are isolated from each other. Therefore, the antenna assembly 20 divides the three-in-one antenna radiator covering the WiFi2.4G frequency band, the WiFi5G frequency band and the GPS frequency band into two antenna radiators, reduces the debugging difficulty of realizing the GPS/WiFi 2.4G/WiFi 5G frequency bands on one antenna, and can also improve the performance of the antenna corresponding to the two antenna radiators.
In some embodiments, please continue to refer to fig. 2, 3 and 8, fig. 8 is a partial enlarged view at a of fig. 3. The metal center 10 includes a plurality of sides that are connected in sequence. The metal center 10 includes a top edge 11 and a bottom edge 12 disposed opposite each other along a first direction Y, and a first side edge 13 and a second side edge 14 disposed opposite each other along a second direction X, the first direction Y being 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 disposed at a corresponding location on the top edge 11.
In a foreseeable scenario, the mobile terminal 100 is used in a flat panel manner, mostly as a flat screen. When the mobile terminal 100 is in a landscape orientation, the top edge 11 of the mobile terminal 100 is generally oriented toward the sky, the camera is positioned in the middle of the top edge, the charging port is positioned in the middle of the second side edge 14, and the bottom edge 12 of the mobile terminal 100 is oriented toward the ground. When the display plane of the mobile terminal 100 is facing the user, i.e. the back cover is facing away from the user, the first side 13 is located on the left side of the user and the second side 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 shielded, and the effect of transmitting and receiving signals of each frequency band is good.
The first and second antenna radiators 21 and 22 extend in the second direction X, and the first and second antenna radiators 21 and 22 are sequentially distributed in the second direction X. The first antenna radiator 21 has a first ground point close to the second antenna radiator 22 and a first feed point distant from the second antenna radiator 22 so that the first antenna radiator 21 is isolated from the second antenna radiator 22. Since the first ground point of the first antenna radiator 21 is close to the second antenna radiator 22, the first ground point serves to isolate radio frequency signals transmitted and received by the second antenna radiator 22, and thus the first antenna radiator 21 is isolated from the second antenna radiator 22, the first antenna radiator 21 and the second antenna radiator 22 do not interfere with each other when operating. Meanwhile, a gap is formed between the first antenna radiator 21 and the second antenna radiator 22 to generate physical isolation, and mutual interference between the first antenna radiator 21 and the second antenna radiator 22 is avoided again.
The first antenna radiator 21 has a first end 211 and a second end 212 opposite in the second direction X, the first end 211 being close to the first side 13, the second end 212 being close to the second side 14, a ground point and a feed point of the first antenna radiator 21 being provided between the first end 211 and the second end 212, the ground point of the first antenna radiator 21 being close to the second side 14, the feed point of the first antenna radiator 21 being close to the first side 13.
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 far away from the first antenna radiator 21. The second antenna radiator 22 extends along the second direction X, the second antenna radiator 22 has a third end 221 and a fourth end 222 opposite along the second direction X, the third end 221 is close to the first antenna radiator 21, the fourth end 222 is close to the second side 14, the third end 221 may be provided with a ground point of the second antenna radiator 22, and a feeding point of the second antenna radiator 22 is provided between the third end 221 and the fourth end 222. Since the ground point of the first antenna radiator 21 is close to the ground point of the second antenna radiator 22, and the second ground point serves to isolate the radio frequency signals transmitted and received by the first antenna radiator 21, the first antenna radiator 21 and the second antenna radiator 22 do not interfere with each other when they are operated.
In some embodiments, the distance of the break 30 between the second end 212 and the third end 221 is greater than 0.5mm and less than or equal to 2mm. It will be appreciated that the ground point of the first antenna radiator 21 is close to the second antenna radiator 22, i.e. the ground point of the first antenna radiator 21 is close to the second end 212, and that the ground point of the second antenna radiator 22 is close to the first antenna radiator 21, i.e. the ground point of the second antenna radiator 22 is close to the third end 221. Since the first antenna radiator 21 and the second antenna radiator 22 are close to each other at the ground point, the first antenna radiator 21 and the second antenna radiator 22 do not interfere with each other when they are operated. Meanwhile, a gap is formed between the first antenna radiator 21 and the second antenna radiator 22 to generate physical isolation, so that mutual interference between the first antenna radiator 21 and the second antenna radiator 22 is avoided. However, since the metal middle frame 10 also needs to have a supporting effect, that is, needs to ensure strength, the distance between the second end 212 and the third end 221 is less than or equal to 2mm, which not only can have a physical isolation effect, but also does not affect the strength of the metal middle frame 10, and the reliability is reduced, that is, the distance is too wide and the reliability is reduced to overcome the disadvantage that the distance between the second end 212 and the third end 221 is too small to be beneficial to the radiation effect of the antenna assembly 20, so that the appearance of the mobile terminal 100 is easily bent.
In some embodiments, the first antenna radiator 21 is closer to the first side 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 20mm, so as to further improve the radiation performance of the antenna assembly 20. It will be appreciated that no shielding exists when the first antenna radiator 21 and the second antenna radiator 22 are positioned closer to the first side edge 13 than the top edge 11, regardless of whether the mobile terminal 100 is placed in a landscape or portrait orientation. For example, in some scenarios, when the mobile terminal 100 is placed on a desktop by a cross screen, the top edge 11 is usually oriented to the sky, and at this time, the first antenna radiator 21 and the second antenna radiator 22 are not blocked, so that the signal receiving and transmitting effects of each frequency band are good; in other situations, when the mobile terminal 100 is held by a vertical screen, the first antenna radiator 21 and the second antenna radiator 22 are located at the upper half of the mobile terminal, and are not easy to be blocked by hands, so that the effect of receiving and transmitting signals of each frequency band is good.
In some embodiments, the length of the first antenna radiator 21 is 20mm or more and the length of the second antenna radiator 22 is 20mm or more. The width ranges of the first antenna radiator 21 and the second antenna radiator 22 are 2mm to 3mm, and the lengths of the first antenna radiator 21 and the second antenna radiator 22 are greater than or equal to 20mm, so that the maximum radiation efficiency of the antenna assembly 20 is ensured. Of course, the lengths of the radiators required for different antenna frequency bands are different, and the widths and lengths 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, and the interference degree of the other internal components of the mobile terminal 100 on the antenna assembly 20, so those skilled in the art can set the lengths and widths of the first antenna radiator 21 and the second antenna radiator 22 according to practical situations.
In some embodiments, 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 each of a strip-like structure extending in the second direction X, and the first antenna radiator 21 and the second antenna radiator 22 may each be of IFA type, with which antenna design it is easier to perform antenna control and tuning without requiring particularly many matches to tune the impedance.
With continued reference to fig. 2 and 3, the present application further provides a metal middle frame 10 applied to the mobile terminal 100. The metal center is provided with a plurality of breaks 30, and the plurality of breaks 30 divide the metal center 10 into at least a first antenna radiator 21 and a second antenna radiator 22. For example, the metal center 10 has three breaks 30 that divide the metal center 10 into a first antenna radiator 21 and a second antenna radiator 22 to physically isolate the first antenna radiator 21 and the second antenna radiator 22 from other structures of the metal center 10.
When the antenna assembly 20 is applied to the mobile terminal 100 of the WWAN version, the first antenna radiator 21 is used for receiving and transmitting signals of the GPS band, the WiFi2.4G band and the WiFi5G band.
When the antenna assembly 20 is applied to the mobile terminal 100 of the WLAN version, the first antenna radiator 21 is used for receiving and transmitting signals of the GPS frequency band, and the second antenna radiator 22 is used for receiving and transmitting signals of the WiFi2.4G frequency band and the WiFi5G frequency band.
The metal middle frame 10 in the embodiment of the present application is the metal middle frame 10 in any of the above embodiments. Therefore, the present embodiment has all the same beneficial effects, and will not be described herein.
The embodiment of the application also provides a mobile terminal 100, and the mobile terminal 100 includes the metal middle frame 10 or the antenna assembly 20.
It should be noted that, the metal middle frame 10 or the antenna assembly 20 in the embodiments of the present application is the metal middle frame 10 or the antenna assembly 20 in any of the embodiments described above. Since the mobile terminal 100 has the metal middle frame 10 or the antenna assembly 20, the same advantages are achieved, and the description of the embodiment is omitted here.
In some embodiments, the mobile terminal 100 further includes an insulating middle frame, and the metal middle frame 10 is disposed on an inner surface of the insulating middle frame to protect and prevent touch and dirt.
The antenna assembly 20 and the mobile terminal 100 provided in the embodiments of the present application are applicable to 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 comprises a metal center 10, the metal center 10 being provided with a plurality of breaks 30, the plurality of breaks 30 dividing the metal center 10 into a first antenna radiator 21 and a second antenna radiator 22. When the antenna assembly 20 is applied to the mobile terminal 100 of the WLAN version, the first antenna radiator 21 is only used for receiving and transmitting signals of the GPS frequency band, and the second antenna radiator 22 is used for receiving and transmitting signals of the WiFi2.4G frequency band and the WiFi5G frequency band. The application provides an antenna assembly 20 can reduce the debugging degree of difficulty of realizing these three frequency channels of GPS frequency channel, wiFi2.4G frequency channel and wiFi5G frequency channel on an antenna radiator, utilizes first antenna radiator 21 and second antenna radiator 22 to realize GPS frequency channel, wiFi2.4G frequency channel and wiFi5G frequency channel's signal transmission jointly, promotes the radio frequency performance of corresponding antenna.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features.
The antenna assembly and the mobile terminal provided by the embodiment of the application are described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, with the description of the examples given above only to assist in understanding the present application. Meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims (10)

1. An antenna assembly for use with a WWAN version of a mobile terminal or a WLAN version of a mobile terminal, the antenna assembly comprising:
the metal middle frame is provided with a plurality of fractures, and the fractures divide the metal middle frame into a first antenna radiator and a second antenna radiator;
when the antenna assembly is applied to a mobile terminal of a WWAN version, the first antenna radiator is used for receiving and transmitting signals of a GPS frequency band, a WiFi2.4G frequency band and a WiFi5G frequency band;
when the antenna assembly is applied to a mobile terminal in a WLAN version, the first antenna radiator is used for receiving and transmitting signals of a GPS frequency band, and the second antenna radiator is used for receiving and transmitting signals of a WiFi2.4G frequency band and a WiFi5G frequency band.
2. The antenna assembly of claim 1, wherein the metal center includes top and bottom edges disposed opposite each other in a first direction, and first and second side edges disposed opposite each other in a second direction, the first direction being perpendicular to the second direction; the first antenna radiator and the second antenna radiator are arranged on the top edge.
3. The antenna assembly of claim 2, wherein the first antenna radiator and the second antenna radiator extend along the second direction, the first antenna radiator and the second antenna radiator being distributed sequentially along the second direction; the first antenna radiator has a first ground point and a first feed point, the first ground point is close to the second antenna radiator, and the first feed point is far away from the second antenna radiator.
4. The antenna assembly of claim 3 wherein the second antenna radiator has a second ground point and a second feed point, the second ground point being proximate the first antenna radiator and the second feed point being remote from the first antenna radiator.
5. The antenna assembly of claim 2, wherein the first antenna radiator is closer to the first side than the second antenna radiator; the distance between the first antenna radiator and the first side edge is less than or equal to 20mm.
6. The antenna assembly of any one of claims 1 to 5, wherein a width of a break between the first antenna radiator and the second antenna radiator is 2mm or less.
7. The antenna assembly of any one of claims 1 to 5, wherein the length of the first antenna radiator is 20mm or more and the length of the second antenna radiator is 20mm or more.
8. The antenna assembly of any one of claims 1-5, wherein the antenna types corresponding to the first antenna radiator and the second antenna radiator are IFA antennas.
9. A mobile terminal comprising an antenna assembly according to any of claims 1 to 8.
10. The mobile terminal of claim 9, further comprising an insulating center, the metal center being disposed on an inner surface of the insulating center.
CN202311028421.0A 2023-08-15 2023-08-15 Antenna assembly and mobile terminal Pending CN117410716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311028421.0A CN117410716A (en) 2023-08-15 2023-08-15 Antenna assembly and mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311028421.0A CN117410716A (en) 2023-08-15 2023-08-15 Antenna assembly and mobile terminal

Publications (1)

Publication Number Publication Date
CN117410716A true CN117410716A (en) 2024-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311028421.0A Pending CN117410716A (en) 2023-08-15 2023-08-15 Antenna assembly and mobile terminal

Country Status (1)

Country Link
CN (1) CN117410716A (en)

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