CN111262006A

CN111262006A - Antenna structure and terminal equipment adopting same

Info

Publication number: CN111262006A
Application number: CN202010057506.1A
Authority: CN
Inventors: 燕永义; 安鑫荣
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-06-09
Also published as: WO2021142888A1

Abstract

The embodiment of the application provides an antenna structure and terminal equipment adopting the same, and the antenna structure is used for enhancing the coupling strength between different antenna branches by a metal frame slotting mode for the purpose of technical limitation brought by the existing metal frame scheme so as to obtain better antenna gain and bandwidth, thereby further ensuring the antenna performance. In addition, the antenna structure is also suitable for mobile terminal products with pure metal frames or in-mold injection molding metal frame schemes.

Description

Antenna structure and terminal equipment adopting same

Technical Field

The application relates to the technical field of mobile communication, in particular to the technical field of mobile equipment, and specifically relates to an antenna structure and terminal equipment adopting the antenna structure.

Background

The development of communication technology is changing day by day, which brings new opportunity for related industries and also provides new challenges. Terminal devices (e.g., mobile phones) have become indispensable electronic products for people of the present age due to their convenient form and powerful functions. With the development of electronic technology, mobile phones not only integrate more functions, such as entertainment and other functions like music, video, etc., but also have appearance and texture changed correspondingly with the aesthetic sense of modern people. Due to its better texture, aesthetics and durability, full-screen, pure metal and in-mold injection metal frame schemes have become the mainstream configuration in the mobile phone market today.

The performance of the antenna, which is an important device for receiving and transmitting wireless signals, often determines the quality of a mobile phone device. Due to the physical properties of the antenna itself, its radiating capability is limited by other metals, high dielectric constants and high loss materials surrounding the radiating body of the antenna. However, the current mobile phones in the market are developed towards a full screen with a larger screen ratio, and the space of the antenna is compressed step by step. In order to achieve better antenna performance in such environments, related developers tend to choose to utilize a more edgewise metal bezel as the antenna or a portion of the antenna. Because the metal frame involves appearance and manufacturing process, the shape, size and position of the metal frame cannot be changed at will, and further restrictions are brought to the antenna design.

The existing mobile communication technology is 2G, 3G and 4G and develops towards the 5G technology, the whole space of the mobile phone is limited, and thus a single antenna is required to cover more frequency bands. It has been a common practice in the industry to utilize electromagnetic coupling between different antenna branches to help achieve greater bandwidth in the frequency band. However, due to the limitation of using the metal frame as the antenna, the electromagnetic coupling strength between different antenna branches of the metal frame is often insufficient due to too far distance or insufficient overlapping area, which affects the performance of the designed antenna. In particular, in the scheme of injection molding the metal frame in the mold, the metal frame needs to be thinner so as to coat a layer of plastic on the outer surface of the metal frame, which is more likely to cause weak coupling strength between different antenna branches. In order to solve such problems, the simpler method is as follows: reducing the width of the slot between the metal frames to increase the distance between the two antenna branches; additional auxiliary traces are used to help excite electromagnetic coupling on different metal bezels. These, while also effective solutions, are process dependent and have cost and reliability implications, and are often less effective than desired.

In view of the foregoing, it is desirable to provide an antenna structure and a terminal device using the same.

Disclosure of Invention

According to an aspect of the present application, there is provided an antenna structure suitable for a terminal device, the antenna structure comprising: a metal frame; a slotted part is arranged on one side of the metal frame, and the metal frames on the two sides of the slotted part are grounded through a metal grounding part respectively to form a first antenna branch and a second antenna branch; the second antenna stub and the first antenna stub are mutually electromagnetically coupled; wherein the slotted portion includes a first slot and a second slot, a distance between the first slot and the second slot in a direction along a transverse axis of the metal bezel is greater than zero.

On the basis of the above technical solutions, the technical solutions of the present application may be further improved as follows.

In some embodiments of the present application, the groove portion has a zigzag shape projected in a longitudinal axis direction of the metal bezel.

In some embodiments of the present application, the width of the first notch and the width of the second notch are both between 1mm and 2mm, and preferably, the width of the first notch and the width of the second notch are both 1.5 mm.

In some embodiments of the present application, the first antenna stub is connected to a first antenna switch in the terminal device; the first antenna branch is connected with a plurality of first branches arranged in the terminal equipment through the first antenna switch respectively.

In some embodiments of the present application, the second antenna stub is connected to a second antenna switch in the terminal device; and the second antenna branch is respectively connected with a plurality of second branches arranged in the terminal equipment through the second antenna switch.

In some embodiments of the present application, the first antenna stub is configured to generate a first resonance and a second resonance, wherein a frequency of the second resonance is greater than a first preset frequency, and a frequency of the first resonance is less than a second preset frequency; the second antenna stub is used for generating a third resonance, and the frequency of the third resonance is greater than that of the second resonance.

In some embodiments of the present application, the first antenna switch is configured to control a frequency band in which the first resonance and the second resonance are generated, and the second antenna switch is configured to control a frequency band in which the third resonance is generated.

In some embodiments of the present application, the first antenna stub is connected to a first feed circuit in the terminal device, the first feed circuit being configured to adjust a radiation frequency of the first antenna stub and the second antenna stub.

The first antenna branch and the second antenna branch are in any one of an LOOP antenna, an IFA antenna, a SLOT antenna and a monopole antenna in a wiring mode.

According to another aspect of the present application, the present application provides a terminal device, the terminal device includes the above antenna structure, a metal frame in the antenna structure is a housing of the terminal device.

Compared with the prior art, the antenna structure and the terminal equipment adopting the antenna structure have the advantages that better antenna gain and bandwidth are obtained through a metal frame slotting mode for enhancing coupling strength between different antenna branches, and accordingly antenna performance is further guaranteed. In addition, the antenna structure is also suitable for mobile terminal products with pure metal frames or in-mold injection molding metal frame schemes.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present application.

Fig. 2 is a perspective view of a partial structure of a terminal device to which the antenna structure shown in fig. 1 is applied.

Fig. 3 is a perspective view of another perspective view of a partial structure of a terminal device to which the antenna structure shown in fig. 1 is applied.

Fig. 4 is a schematic plan view of a portion of the structure shown in fig. 3.

Fig. 5 is a schematic perspective view of the antenna structure shown in fig. 1, in which the slot portion is shaped like a "1".

Fig. 6 is a schematic diagram of the relationship between the antenna efficiency and the frequency of the antenna structure in which the slot portion of the antenna structure is a "1" slot and a "Z" slot.

Fig. 7 is another schematic structural diagram of a terminal device adopting the antenna structure in an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a terminal device adopting the antenna structure in the embodiment of the present application.

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 is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In particular embodiments, the drawings discussed below and the embodiments used to describe the principles of the present disclosure are by way of illustration only and should not be construed to limit the scope of the present disclosure. Those skilled in the art will understand that the principles of the present application may be implemented in any suitably arranged system. Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. Further, a terminal according to an exemplary embodiment will be described in detail with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements.

The terminology used in the detailed description is for the purpose of describing particular embodiments only and is not intended to be limiting of the concepts of the present application. Unless the context clearly dictates otherwise, expressions used in the singular form encompass expressions in the plural form. In the present specification, it is to be understood that terms such as "comprising," "having," and "containing" are intended to specify the presence of stated features, integers, steps, acts, or combinations thereof, as disclosed in the specification of the application, and are not intended to preclude the presence or addition of one or more other features, integers, steps, acts, or combinations thereof. Like reference symbols in the various drawings indicate like elements.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Specifically, referring to fig. 1 to 4, an embodiment of the present invention provides an antenna structure 100 suitable for a terminal device 200.

The antenna structure 100 includes: a metal frame 101. The metal bezel 101 serves as a terminal device 200 (e.g., mobile phone) housing. Further, the terminal device 200 housing may be a pure metal frame or an in-mold metal frame.

A slot 130 is formed on one side of the metal frame 101. The metal frames 101 on both sides of the slot 130 are grounded through a metal grounding member 140 to form a first antenna branch 110 and a second antenna branch 120. The second antenna branch 120 is electromagnetically coupled to the first antenna branch 110. Wherein the slotted portion 130 includes a first slot 131 and a second slot 132, and a distance between the first slot 131 and the second slot 132 in a transverse axis direction of the metal bezel 101 is greater than zero.

Specifically, the first antenna branch 110 is connected to a first antenna switch 151 in the terminal device 200. The first antenna branch 110 is connected to a plurality of first branches 161 provided in the terminal device 200 through the first antenna switch 151, respectively. Of course, the first antenna branch 110 may be connected to the first branch 161 by a duplexer or the like. As shown in fig. 1, the first branches 161 are 4 first branches, so that the antenna formed by the first antenna stub 110 can operate in different frequency bands. Of course, in other embodiments, the number of the first branches 161 is not limited thereto.

The second antenna stub 120 is connected to a second antenna switch 152 in the terminal device 200. The second antenna branch 120 is connected to a plurality of second branches 162 disposed in the terminal device 200 through the second antenna switch 152. As shown in fig. 1, the second branches 162 are 4 second branches, so that the antenna formed by the second antenna branch 120 can operate in different frequency bands. Of course, in other embodiments, the number of the second branches is not limited thereto.

The first antenna stub 110 is connected to a first feeding circuit 170 in the terminal device 200, and the first feeding circuit 170 may include a plurality of RL circuits.

The first antenna stub 110 is connected to a matching circuit in the terminal device 200, and the matching circuit is used to adjust the impedance matching of the antenna, so as to further improve the bandwidth of the antenna.

The first feed circuit 170 is configured to adjust the radiation frequency of the first antenna stub and the second antenna stub.

The first Antenna branch 110 and the second Antenna branch 120 may be in any form of a LOOP (LOOP) Antenna, an Inverted F Antenna (IFA), a SLOT (SLOT) Antenna, a monopole (monopole) Antenna, or the like. The antenna can be made to appear in different forms by adjusting the position of the first feeding circuit 170 and the connection relationship of the first feeding circuit 170 and the first antenna stub 110. For example, by placing the connection point of the first feeding circuit 170 to the first antenna branch 110 close to the metal ground 140, the antenna of the first antenna branch 110 is in the form of an IFA antenna. The connection point of the first feed circuit 170 and the first antenna stub 110 is disposed at a position close to the SLOT portion, so that the antenna of the first antenna stub 110 is in the form of a LOOP antenna or a SLOT antenna.

Also, the antenna can be made to appear in different forms by adjusting the position of the first feeding circuit 170 and the connection relationship of the first feeding circuit 170 and the second antenna stub 120. For example, by placing the connection point of the first feed circuit 170 and the second antenna branch 120 close to the metal ground 140, the antenna of the second antenna branch 120 is in the form of an IFA antenna. The connection point of the first feed circuit 170 and the second antenna stub 120 is disposed at a position close to the SLOT portion, so that the antenna of the second antenna stub 120 is in the form of a LOOP antenna or a SLOT antenna.

In this embodiment, the first antenna branch 110 is used to generate a first resonance and a second resonance, wherein the frequency of the second resonance is greater than a first predetermined frequency (or called a high frequency), and the frequency of the first resonance is less than a second predetermined frequency (or called a low frequency). The second antenna stub 120 is configured to generate a third resonance, and a frequency of the third resonance is greater than a frequency of the second resonance. Specifically, for example, the first predetermined frequency is 1700MHz, and the second predetermined frequency is 900 MHz. The second resonance generated by the first antenna stub 110 is 1800MHz, which is a medium-high frequency, and the first resonance generated by the first antenna stub 110 is 850 MHz. The second antenna stub 120 produces a third resonance at a frequency of 2200 Mhz. That is, the first antenna branch 110 generates low and medium-high frequencies, and the second antenna branch 120 is excited by the electromagnetic coupling of the first antenna branch 110 to generate higher-frequency resonance.

In addition, the first antenna switch 151 is used to control the frequency band in which the first resonance and the second resonance are generated, and the second antenna switch 152 is used to control the frequency band in which the third resonance is generated.

Due to the coupling feeding (or parasitic), the high frequency resonance strength generated on the second antenna branch 120 can even generate resonance, which is influenced by the shape and size of the slot 130 between the first antenna branch 110 and the second antenna branch. Compared with the conventional slot, the Z-shaped slot can avoid the problem of insufficient overall antenna performance caused by insufficient coupling strength by increasing the coupling strength between the second antenna branch 120 and the first antenna branch 110 without changing the width (limited by the manufacturing process and generally not less than 1mm) of the slot 130.

Specifically, in the present embodiment, a slotted portion 130 is provided on the bottom of the terminal device 200, i.e., on one side (bottom side) of the metal bezel 101. The slot 130 is in a zigzag shape projected in a longitudinal direction of the metal bezel 101, as shown in fig. 2, 3 and 4. Specifically, the grooved portion 130 includes a first grooved portion and a second grooved portion. The first slot portion is substantially L-shaped or approximately convex (with a middle portion thereof being a sound outlet hole of the terminal device 200), and the second slot portion is substantially L-shaped. The first slot portion has the first notch 131, the second slot portion has the second notch 132, and the first slot portion and the second slot portion communicate with each other.

Since the distance between the first notch 131 and the second notch 132 along the transverse axis of the metal frame 101 is greater than zero, compared with the conventional slot portion 180, the slot is formed in a shape of "1", as shown in fig. 5, the slot is formed in a shape of "Z", as shown in fig. 4, that is, the facing area of the slot portion 130 with respect to the metal frame 101 is increased, so that the electromagnetic coupling strength between the first antenna and the second antenna can be improved, and better antenna performance can be obtained. Of course, the shape of the slot 130 is not limited to the "Z" shaped slot, and it is within the scope of the present application as long as it can change the facing area of the slot position relative to the metal frame 101. In this way, by changing the shape of the slot portion 130 on one side of the metal frame 101 to change the facing area of the slot position of the slot portion 130 with respect to the metal frame 101, the electromagnetic coupling strength between different antenna branches (here, the first antenna branch 110 and the second antenna branch 120) is further improved, thereby ensuring the performance of the designed antenna.

In the present embodiment, the width of the first notch 131 and the width of the second notch 132 are both between 1mm and 2mm, and preferably, the width of the first notch 131 and the width of the second notch 132 are both 1.5 mm.

Fig. 6 is a schematic diagram of the relationship between the antenna efficiency and the frequency of the antenna structure 100 in which the slot portion is a "1" slot and a "Z" slot.

The figure is an example of different efficiency results obtained by respectively employing a conventional grooving method and employing zigzag grooving in a test project.

In this test environment, still specifically include: the metal scheme cell-phone antenna of moulding plastics in the mould, the antenna headroom is about 1.5mm, adopts metal frame 101 as the antenna and does not use other antenna to walk the line.

When a conventional slotting mode is adopted, the size of the metal frame in the plastic is thin, and the width of the slotting part is limited by the manufacturing process, so that the size cannot be reduced. As shown in fig. 5, due to the design of the slot portion 180, the electromagnetic coupling strength between the first antenna branch 110 and the second antenna branch 120 is not sufficient, and it is difficult to obtain good impedance matching for the high-frequency (e.g., 1700MHz to 2200MHz) resonance generated by the first antenna branch 110 and the second antenna branch 120, which further results in low high-frequency efficiency and difficulty in meeting the design requirements.

When the Z-shaped slotting mode is adopted, other parameters are consistent with those of the conventional slotting mode. As shown in fig. 6, it can be seen that the high-frequency antenna efficiency achieved by the "Z" type slot method is significantly higher than that achieved by the conventional slot method. Although the slot width is not changed, the facing area of the slot part 130 between the first antenna branch 110 and the second antenna branch 120 relative to the metal frame 101 is increased by the Z-shaped slot manner, so that the electromagnetic coupling strength between the first antenna branch 110 and the second antenna branch 120 is improved, and better antenna gain and bandwidth are obtained, and better high-frequency antenna performance is obtained.

Referring to fig. 7, the present application provides a terminal device 200, where the terminal device 200 includes the above antenna structure, and a metal frame 101 in the antenna structure is a housing of the terminal device 200. The terminal device 200 housing may be a pure metal frame or an in-molded metal frame. Further, the terminal device 200 may further include a processor 201 and a memory 202. Wherein the processor 201 is connected to the memory 202. The terminal device 200 may be a mobile phone, a tablet, a computer, or the like.

The processor 201 is a control center of the terminal device 200, connects various parts of the whole terminal device by using various interfaces and lines, executes various functions of the terminal device and processes data by running or loading an application program stored in the memory 202 and calling data and instructions stored in the memory 202, thereby performing overall monitoring of the terminal device.

In this embodiment, the terminal device 200 is provided with a plurality of memory partitions, the plurality of memory partitions includes a system partition and a target partition, the processor 201 in the terminal device 200 loads instructions corresponding to processes of one or more application programs into the memory 202, and the processor 201 runs the application programs stored in the memory 202, thereby implementing various functions.

Fig. 8 shows a specific block diagram of the terminal device 300 according to the embodiment of the present invention. The terminal device 300 may be a mobile phone or a tablet. In addition, the terminal device may further include the following components.

The RF circuit 310 is used for receiving and transmitting electromagnetic waves, and performing interconversion between the electromagnetic waves and electrical signals, thereby communicating with a communication network or other devices. RF circuitry 310 may include various existing circuit elements for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, memory, and so forth. RF circuit 310 may communicate with various networks such as the internet, an intranet, a wireless network, or with other devices over a wireless network. The wireless network may comprise a cellular telephone network, a wireless local area network, or a metropolitan area network. The Wireless network may use various Communication standards, protocols and technologies, including but not limited to Global System for Mobile Communication (GSM), Enhanced Mobile Communication (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wireless Fidelity (Wi-Fi) (e.g., IEEE802.11a, IEEE802.11 b, IEEE802.11g and/or IEEE802.11 n), Voice over Internet Protocol (VoIP), world wide Microwave Access (Microwave for Wireless), Max-1, and other short message protocols, as well as any other suitable communication protocols, and may even include those that have not yet been developed.

The memory 320 may be used to store software programs and modules, such as program instructions/modules corresponding to the photographing method in the above-described embodiment, and the processor 380 executes various functional applications and data processing by running the software programs and modules stored in the memory 320, so as to implement a photographing function. The memory 320 may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, memory 320 may further include memory located remotely from processor 380, which may be connected to terminal device 300 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input unit 330 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 330 may include a touch-sensitive surface 331 as well as other input devices 332. The touch-sensitive surface 331, also referred to as a touch screen or touch pad, may collect touch operations by a user on or near the touch-sensitive surface 331 (e.g., operations by a user on or near the touch-sensitive surface 331 using a finger, a stylus, or any other suitable object or attachment), and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface 331 may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 380, and can receive and execute commands sent by the processor 380. In addition, the touch-sensitive surface 331 may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. The input unit 330 may comprise other input devices 332 in addition to the touch sensitive surface 331. In particular, other input devices 332 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 340 may be used to display information input by or provided to the user and various graphic user interfaces of the terminal apparatus 300, which may be configured by graphics, text, icons, video, and any combination thereof. The Display unit 340 may include a Display panel 341, and optionally, the Display panel 341 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. Further, touch-sensitive surface 331 may overlay display panel 341, and when touch-sensitive surface 331 detects a touch operation thereon or thereabout, communicate to processor 380 to determine the type of touch event, and processor 380 then provides a corresponding visual output on display panel 341 in accordance with the type of touch event. Although in FIG. 8, touch-sensitive surface 331 and display panel 341 are implemented as two separate components for input and output functions, in some embodiments, touch-sensitive surface 331 and display panel 341 may be integrated for input and output functions.

The terminal device 300 may also include at least one sensor 350, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 341 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 341 and/or the backlight when the terminal device 300 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured in the terminal device 300, detailed descriptions thereof are omitted.

Audio circuitry 360, speaker 361, microphone 362 may provide an audio interface between a user and terminal device 300. The audio circuit 360 may transmit the electrical signal converted from the received audio data to the speaker 361, and the audio signal is converted by the speaker 361 and output; on the other hand, the microphone 362 converts the collected sound signal into an electrical signal, which is received by the audio circuit 360 and converted into audio data, which is then processed by the audio data output processor 380 and then transmitted to, for example, another terminal via the RF circuit 310, or the audio data is output to the memory 320 for further processing. The audio circuit 360 may also include an earbud jack to provide communication of peripheral headphones with the terminal device 300.

The terminal device 300 may assist the user in e-mail, web browsing, streaming media access, etc. through the transmission module 370 (e.g., a Wi-Fi module), which provides the user with wireless broadband internet access. Although fig. 8 shows the transmission module 370, it is understood that it does not belong to the essential constitution of the terminal device 300, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 380 is a control center of the terminal device 300, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the terminal device 300 and processes data by running or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory 320, thereby performing overall monitoring of the mobile phone. Optionally, processor 380 may include one or more processing cores; in some embodiments, processor 380 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 380.

Terminal device 300 also includes a power supply 390 (e.g., a battery) for powering the various components, which may be logically coupled to processor 380 via a power management system in some embodiments to manage charging, discharging, and power consumption management functions via the power management system. The power supply 390 may also include any component including one or more of a dc or ac power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

Although not shown, the terminal device 300 may further include a camera (e.g., a front camera, a rear camera), a bluetooth module, and the like, which are not described in detail herein. Specifically, in this embodiment, the display unit of the terminal device is a touch screen display, and the terminal device further includes a memory and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the one or more processors.

In a specific implementation, the above modules may be implemented as independent entities, or may be combined arbitrarily to be implemented as the same or several entities, and the specific implementation of the above modules may refer to the foregoing embodiments, which are not described herein again.

The above detailed description is made on an antenna structure and a terminal device using the antenna structure provided by the embodiment of the present invention, and a specific example is applied in the description to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An antenna structure adapted for use with a terminal device, the antenna structure comprising: a metal frame; a slotted part is arranged on one side of the metal frame, and the metal frames on the two sides of the slotted part are grounded through a metal grounding part respectively to form a first antenna branch and a second antenna branch; the second antenna stub and the first antenna stub are mutually electromagnetically coupled; wherein the slotted portion includes a first slot and a second slot, a distance between the first slot and the second slot in a direction along a transverse axis of the metal bezel is greater than zero.

2. The antenna structure according to claim 1, wherein the slot portion has a zigzag shape projected in a longitudinal axis direction of the metal bezel.

3. An antenna structure according to claim 1, characterized in that the width of the first slot and the width of the second slot are both between 1mm and 2mm, preferably the width of the first slot and the width of the second slot are both 1.5 mm.

4. The antenna structure according to claim 1, characterized in that the first antenna stub is connected to a first antenna switch in the terminal device; the first antenna branch is connected with a plurality of first branches arranged in the terminal equipment through the first antenna switch respectively.

5. The antenna structure according to claim 4, characterized in that the second antenna stub is connected to a second antenna switch in the terminal device; and the second antenna branch is respectively connected with a plurality of second branches arranged in the terminal equipment through the second antenna switch.

6. The antenna structure according to claim 5, wherein the first antenna stub is configured to generate a first resonance and a second resonance, wherein the frequency of the second resonance is greater than a first predetermined frequency, and the frequency of the first resonance is less than a second predetermined frequency; the second antenna stub is used for generating a third resonance, and the frequency of the third resonance is greater than that of the second resonance.

7. The antenna structure according to claim 6, characterized in that the first antenna switch is adapted to control the frequency band in which the first resonance and the second resonance occur, and the second antenna switch is adapted to control the frequency band in which the third resonance occurs.

8. The antenna structure according to claim 1, characterized in that the first antenna branch is connected to a first feeding circuit in the terminal device for adjusting the radiation frequency of the first and second antenna branches.

9. The antenna structure according to claim 1, wherein the first antenna stub and the second antenna stub are routed in any one of a LOOP antenna, an IFA antenna, a SLOT, and a monopole antenna.

10. A terminal device, characterized in that the terminal device comprises the antenna structure of any one of claims 1 to 9, and a metal frame in the antenna structure is a housing of the terminal device.