CN219717249U

CN219717249U - Mobile terminal

Info

Publication number: CN219717249U
Application number: CN202320875177.0U
Authority: CN
Inventors: 李月亮; 王静松; 沙绍书; 李健
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-09-19
Anticipated expiration: 2033-04-18

Abstract

The utility model relates to an electronic equipment field specifically provides a mobile terminal, and it includes casing and antenna system, and antenna system includes first antenna and second antenna, and first antenna and second antenna are cavity antenna, and the cavity open end of first antenna is close to the first side setting of casing frame, and the cavity open end of second antenna is close to the second side setting adjacent with first side. In this disclosed embodiment, set up first antenna and second antenna as the cavity antenna to can satisfy the antenna performance requirement of all metal casing's mobile terminal, need not to set up the fracture at metal casing, improve outward appearance feel, two antennas are located adjacent side respectively moreover, and the antenna polarization direction is complementary, can cover terminal horizontal screen and vertical screen service scenario simultaneously, improves antenna performance.

Description

Mobile terminal

Technical Field

The disclosure relates to the technical field of electronic equipment, in particular to a mobile terminal.

Background

With the development of electronic equipment technology, more and more functions can be realized by a mobile terminal nowadays, such as satellite positioning, wireless internet surfing, call receiving, mobile payment and the like, and the functions depend on wireless communication technology, so that the design of an antenna for realizing wireless communication is always an important research direction of the mobile terminal.

Disclosure of Invention

In order to improve the antenna performance of a mobile terminal, an embodiment of the present disclosure provides a mobile terminal, including:

the shell made of conductor materials comprises a frame formed by encircling four side edges and a backboard connected to the lower end face of the frame;

the antenna system comprises a first antenna and a second antenna, wherein the first antenna and the second antenna are cavity antennas, the cavity open end of the first antenna is close to a first side of the frame, and the cavity open end of the second antenna is close to a second side adjacent to the first side, so that the polarization directions of the first antenna and the second antenna are complementary.

In some embodiments, the antenna system further includes a radio frequency circuit disposed on a circuit board of the mobile terminal, and a signal switching unit, the signal switching unit including a first end, a second end, and a third end, the first end being connected to the radio frequency circuit, the second end being connected to a first antenna, the third end being connected to a second antenna;

the signal switching unit is configured to switch conduction between the first terminal and the second terminal, and between the first terminal and the third terminal.

In some embodiments, the mobile terminal described in the present disclosure further includes:

The detection sensor is used for detecting pose data of the mobile terminal;

and one end of the controller is connected with the detection sensor, the other end of the controller is connected with the signal switching unit, and the controller controls the signal switching unit to be switched on according to the pose data.

In some embodiments, the frequency bands of the first antenna and the second antenna are the same, and/or the antenna uses are the same.

In some embodiments, the first antenna and the second antenna are WiFi antennas, and an operating frequency band of one of the first antenna and the second antenna includes a WiFi 2.4G frequency band, and an operating frequency band of the other of the first antenna and the second antenna includes a WiFi 5G frequency band.

In some embodiments, the bezel includes two parallel long sides and two parallel short sides, and the first antenna is disposed proximate the top short side of the bezel.

In some embodiments, the mobile terminal disclosed in the present disclosure further includes a camera module, where the camera module is disposed in a target clearance area of the mobile terminal, and the target clearance area includes an overlapping area of a long-side antenna clearance area and a short-side antenna clearance area of the mobile terminal.

In some embodiments, the antenna system further includes a third antenna, where the third antenna is disposed on the camera module of the mobile terminal, and the third antenna includes a first radiator and a second radiator disposed perpendicular to each other, where the first radiator is configured to have a polarization direction complementary to a polarization direction of the first antenna, and the second radiator is configured to have a polarization direction complementary to a polarization direction of the second antenna.

In some embodiments, the third antenna is a WiFi antenna, the first radiator is configured to operate in one of a WiFi 2.4G frequency band and a WiFi 5G frequency band, and the second radiator is configured to operate in the other of the WiFi 2.4G frequency band and the WiFi 5G frequency band.

In some embodiments, the first radiator and the second radiator are FPC antenna radiators or LDS antenna radiators.

In some embodiments, the cavity antenna comprises a cavity plate made of a conductor material, the cavity plate is buckled and connected to a circuit board of the mobile terminal, the inner wall of the cavity plate and the circuit board form a cavity structure, and one side surface of the cavity structure is an open end;

the cavity antenna is provided with a rigid feed terminal at the open end, one end of the feed terminal is connected with the cavity plate at the open end, and the other end of the feed terminal is connected with a radio frequency circuit on the circuit board.

In some embodiments, a side of the circuit board away from the cavity plate is electrically connected with the back plate, and a through groove is formed at a position of the circuit board corresponding to the cavity structure;

or alternatively, the process may be performed,

at least one raised reinforcing rib groove is formed in the cavity plate.

In some embodiments, the mobile terminal comprises a tablet computer.

The mobile terminal of this disclosed embodiment comprises a housing and an antenna system, wherein the antenna system comprises a first antenna and a second antenna, the first antenna and the second antenna are cavity antennas, the cavity open end of the first antenna is close to the first side of the housing frame, and the cavity open end of the second antenna is close to the second side adjacent to the first side. In this disclosed embodiment, set up first antenna and second antenna as the cavity antenna to can satisfy the antenna performance requirement of all metal casing's mobile terminal, need not to set up the fracture at metal casing, improve outward appearance feel, two cavity antennas are located adjacent side respectively moreover, and the polarization direction that the antenna produced is complementary, can cover terminal horizontal screen and vertical screen service scenario simultaneously, improve antenna performance.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the prior art, the drawings that are required in the detailed description or the prior art will be briefly described, it will be apparent that the drawings in the following description are some embodiments of the present disclosure, and other drawings may be obtained according to the drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic diagram of a mobile terminal according to some embodiments of the present disclosure.

Fig. 2 is a schematic view of an application scenario of a mobile terminal according to some embodiments of the present disclosure.

Fig. 3 is a schematic view of an application scenario of a mobile terminal according to some embodiments of the present disclosure.

Fig. 4 is an exploded structural schematic view of a mobile terminal according to some embodiments of the present disclosure.

Fig. 5 is a schematic diagram of a housing structure of a mobile terminal according to some embodiments of the present disclosure.

Fig. 6 is a schematic view of a screen assembly structure of a mobile terminal according to some embodiments of the present disclosure.

Fig. 7 is a sectional view of an assembled structure of a mobile terminal according to some embodiments of the present disclosure.

Fig. 8 is a schematic diagram of a cavity antenna structure of a mobile terminal according to some embodiments of the present disclosure.

Fig. 9 is a schematic diagram of a cavity antenna structure of a mobile terminal according to some embodiments of the present disclosure.

Fig. 10 is a schematic diagram of a cavity antenna of a mobile terminal in accordance with some embodiments of the present disclosure.

Fig. 11 is a schematic structural view of a mobile terminal according to some embodiments of the present disclosure.

Fig. 12 is a block diagram of a mobile terminal according to some embodiments of the present disclosure.

Detailed Description

The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure. In addition, technical features related to different embodiments of the present disclosure described below may be combined with each other as long as they do not make a conflict with each other.

Nowadays, with the development of wireless communication technologies, wireless communication antennas included in mobile terminals are increasing, such as GPS (Global Positioning System ) antennas for realizing satellite positioning, wiFi (wireless fidelity ) antennas for realizing wireless local area networks, 4G LTE (Long Term Evolution ) antennas and 5G antennas for realizing cellular networks, BT (bluetooth) antennas for realizing bluetooth connections, and the like. In addition, some mobile terminals include UWB (Ultra Wide Band) antennas, NFC (Near Field Communication ) antennas, and the like.

In addition, along with the pursuit of people to the appearance of mobile terminals, the mobile terminals increasingly adopt all-metal shells, that is, the side frames and the back plate of the mobile terminals adopt Unibody integrated all-metal bodies, and as the metal shells have shielding effect on the antenna, the design difficulty of the antenna is further increased.

Based on the defects of the related art, the embodiment of the disclosure provides a mobile terminal, which aims to optimize the antenna design of the mobile terminal and improve the antenna performance of the mobile terminal. The mobile terminals described in this disclosure may be of any suitable type of terminal for implementation, such as tablet computers, mobile handsets, handheld palmtops, personal digital assistants (PDAs, personal digital assistant), etc., as this disclosure is not limited thereto.

For example, fig. 1 shows a schematic structural diagram of a mobile terminal of the present disclosure, and in the example of fig. 1, the mobile terminal is illustrated by taking a tablet computer 10 as an example.

As shown in fig. 1, the external appearance of the tablet computer 10 is a rectangular structure, and the rectangular structure includes two parallel long sides and two parallel short sides, so that the tablet computer 10 generally has two usage modes of a horizontal screen and a vertical screen, and the device manufacturer of the tablet computer 10 can guide and optimize the usage modes of the horizontal screen and the vertical screen.

Therefore, in the embodiment of the disclosure, the actual use scene of the mobile terminal can be combined, and different areas of the mobile terminal are divided according to different antenna headroom environments in the use scene of the user.

For example, as shown in fig. 2, in the case of the flat screen usage of the tablet computer 10, the user's hands generally hold the lower side of the tablet computer 10, so that in the case of the flat screen usage, the present disclosure can define the lower area of the tablet computer 10 as a "lateral holding area A1" and the upper area of the tablet computer 10 as a "lateral non-holding area B1".

For example, as shown in fig. 3, in the case of the vertical screen use tablet computer 10, the user holds the lower side of the tablet computer 10 with both hands, so in the case of the vertical screen use, the present disclosure may define the lower area of the tablet computer 10 as a "vertical holding area A2", and define the upper area of the tablet computer 10 as a "vertical non-holding area B2".

As can be seen from the scene shown in fig. 2 and fig. 3, in the horizontal screen use or the vertical screen use, the tablet computer 10 has a part of area which cannot be held by the user, and the antenna clearance environment of the user holding area is much worse than that of the non-holding area due to the influence of the human body on the radiation performance of the antenna, so that the antenna of the terminal should be preferentially arranged in the non-holding area.

For example, in the scenario shown in fig. 2, the lateral non-grip region B1 is better than the antenna headroom environment of the lateral grip region A1, while for example, in the scenario shown in fig. 3, the longitudinal non-grip region B2 is better than the antenna headroom environment of the longitudinal grip region A2. In the embodiment of the disclosure, since the transverse non-holding area B1 is along the long-side direction of the mobile terminal, the antenna clearance area corresponding to the transverse non-holding area B1 can be defined as "long-side antenna clearance area B1"; similarly, since the longitudinal non-holding area B2 is along the short side direction of the mobile terminal, the antenna clearance area corresponding to the longitudinal non-holding area B2 may be defined as "short side antenna clearance area B2".

Therefore, in the embodiment of the disclosure, different antenna clearance areas of the mobile terminal can be defined according to the advantages and disadvantages of the antenna clearance environment. For example, in some embodiments, the first headroom region disclosed in the present disclosure may include the long-side antenna headroom region B1 and the short-side antenna headroom region B2, and the remaining region is defined as the second headroom region. As can be seen from the usage scenario in conjunction with fig. 2 and 3, the antenna headroom environment of the first headroom is significantly better than that of the second headroom.

In addition, it should be noted that, as can be seen in fig. 2 and 3, a part of the area in the first clearance area is always not held in either the horizontal screen use or the vertical screen use of the user, that is, the overlapping area of the long-side antenna clearance area B1 and the short-side antenna clearance area B2, that is, the area C shown in fig. 1. Because the user cannot hold the overlapping area C all the time during use, the overlapping area C is the optimal area for antenna design in the first headroom. In the embodiment of the present disclosure, the overlapping region in the first clearance area may be defined as "target clearance area C".

The application scenario and the partial term definition of the mobile terminal of the present disclosure are described above with reference to fig. 1 to 3, fig. 4 shows an exploded view of a housing structure of a mobile terminal in the related art, and the principle of the mobile terminal is described below with reference to fig. 4.

In the example of fig. 4, the mobile terminal is still exemplified by the tablet pc 10 shown in fig. 1, and the housing structure of the tablet pc 10 mainly includes the screen assembly 20, the support 30, the frame 40, and the back plate 50.

The screen assembly 20 is a display module of the tablet computer 10, and is directly used as the front surface of the external appearance of the tablet computer 10. The frame 40 refers to a side frame of the tablet pc 10, which may be made of metal, alloy or plastic, and the upper end surface of the frame 40 is fixedly assembled with the screen assembly 20 through a support 30, and the support 30 refers to a bearing structure for bearing the screen assembly 20 and other electrical components, which is generally a plastic bracket. The lower end surface of the frame 40 is fixedly assembled with the back plate 50, the back plate 50 can be used as the back surface of the external appearance of the tablet personal computer 10, and the back plate 50 can be made of metal, alloy, plastic or leather materials. Of course, the tablet computer 10 also includes other electrical components, such as a battery, a motherboard, a sensor, etc., which are not described in detail in this disclosure.

In the conventional antenna design scheme, the back plate 50 made of non-metal materials such as glass, plastic and leather is generally adopted, so that the non-metal back plate 50 cannot affect the antenna inside the terminal, and the design of the antenna can be easily realized by adopting a conventional FPC (Flexible Printed Circuit) antenna, an LDS (Laser-Direct-structuring) antenna or a metal frame antenna.

However, as people pursue the appearance of mobile terminals, more and more mobile terminals adopt all-metal integrally formed Unibody housings, that is, the frame 40 and the back plate 50 in fig. 4 are integrally formed by metal materials, the back plate 50 made of metal materials has a great influence on the antenna performance inside the body, and the antenna design difficulty of the mobile terminal with all-metal housings is multiplied. For example, fig. 5 shows a structure of an all-metal Unibody shell, that is, the back plate 50 and the metal frame 40 are integrally formed by metal materials, so that an all-metal Unibody body is formed, and the appearance and texture of a product are improved. However, the performance of the WiFi antenna is greatly affected by the metal shell, which results in increased difficulty in antenna design.

Taking a WiFi antenna of a mobile terminal as an example, in the related art, in order to improve performance of the WiFi antenna, the WiFi antenna may be designed on a camera module of the mobile terminal. It can be appreciated that the camera module generally corresponds to the back plate 50 and is provided with the avoidance hole 55, the camera module passes through the back plate 50 through the avoidance hole 55, and the outer decorative plate of the camera module often adopts nonmetal materials such as glass and plastics, so that the camera module has a better antenna clearance environment, and therefore, the camera module can have better WiFi antenna performance.

However, in this solution, due to the shielding effect of the metal backboard 50 on the WiFi signal, the radiation direction of the WiFi antenna mainly faces the back of the mobile terminal, so that the WiFi signal on the front of the mobile terminal is much worse than that on the back, which results in poor WiFi signal under the user usage scene, and is difficult to consider the omnibearing WiFi usage scene.

In some embodiments, a mobile terminal of examples of the present disclosure includes a housing, a screen assembly, and an antenna system.

The housing refers to a housing structure of the mobile terminal, and in some embodiments, the housing may include a back plate and a bezel. The frame is a frame body structure formed by surrounding four edges and is used as a side edge structure of the mobile terminal, for example, the mobile terminal is of a rectangular structure, and the frame can be formed by surrounding two long edges and two short edges. The backboard is fixedly connected to one side end face of the frame, so that a shell structure with one side open is formed by the backboard and the side end face. The electrical components of the mobile terminal may be disposed inside a housing structure, such as a motherboard, a battery, a sensor, a vibration motor, etc.

It should be noted that in the embodiment of the present disclosure, the shell may be an all-metal integrated Unibody, that is, the back plate and the frame of the shell are integrally formed with the same metal material. For example, in a mobile terminal taking a tablet computer as an example, fig. 5 shows a shell structure of the mobile terminal, and referring to fig. 5, the shell adopts an all-metal integrated body, that is, the back plate 50 and the metal frame 40 are integrally formed by adopting metal materials, so that an all-metal Unibody body is formed, and the appearance effect and the texture of a product are improved.

In an embodiment of the disclosure, the screen assembly includes a cover plate and a display panel which are stacked, and a coverage area of the cover plate is larger than that of the display panel, so that the screen assembly is assembled at an open end of the housing through an edge of the cover plate.

For example, fig. 6 illustrates a front view of a screen assembly 20 in some embodiments of the present disclosure, as shown in fig. 6, the screen assembly 20 includes a cover plate 21 and a display panel 22 that are stacked. The display panel 22 refers to a module of the screen assembly 20 for displaying a picture, and may include a touch layer, a light emitting layer, an IOT (indium tin oxide), etc. for implementing functions of picture display, touch interaction, etc. The cover 21 is a protective structure covering the outermost layer of the display panel 22, and is generally made of glass.

The area of the cover plate 21 is generally larger than that of the display panel 22 because the cover plate 21 needs to be constructed as a structure in which the screen assembly 20 is assembled with other parts. For example, as shown in fig. 6, the area of the display panel 22 may be used to display a picture, and the area of the cover 21, which is more than the area of the display panel 22, cannot display a picture, which is also known as "black edge" in the field of electronic devices. In other words, the width of the black edge of the screen assembly 20 is the width of the cover 21 minus the width of the display panel 22.

Fig. 7 is a schematic cross-sectional structure of a mobile terminal according to some embodiments of the present disclosure. Referring to fig. 7, in this example, the housing includes a rim 40 and a back plate 50, and the back plate 50 and the rim 40 are integrally formed of an all-metal material. The screen assembly 20 is assembled and connected with the housing through a support 30, and the support 30 may be a plastic bracket structure.

The screen assembly 20 includes a cover plate 21 and a display panel 22, and the screen assembly 20 is fixedly assembled with the support body 30 through the cover plate 21. As can be seen from fig. 7, the cover plate 21 has a larger area than the display panel 22, and thus, for one side of the screen assembly 20, a black edge region having a width d cannot display an image, in other words, since no screen wiring is disposed in the black edge region, the shielding effect on the antenna signal is weak. In the embodiment of the disclosure, the black edge region can be utilized to arrange the antenna system, so that the antenna design of the mobile terminal aiming at the all-metal shell is realized.

In some embodiments, an antenna system of a mobile terminal of the present disclosure includes a first antenna and a second antenna, where the first antenna and the second antenna are cavity antennas, and an open cavity end of the first antenna is disposed near a first side of a frame, and an open cavity end of the second antenna is disposed near a second side adjacent to the first side.

The cavity antenna is an antenna structure for generating electromagnetic radiation by utilizing the metal cavity, has the advantages of directional radiation, high stability, high sensitivity and strong electromagnetic interference resistance, and can be arranged close to a black area by utilizing the cavity antenna in combination with the mobile terminal shown in fig. 7, so that the cavity antenna can radiate from a gap with the width d towards the front of the mobile terminal, the WiFi antenna design of the all-metal shell is realized, and the antenna radiation performance can completely meet the design requirement of the mobile terminal.

In order to facilitate understanding of the present disclosure, the structure and the working principle of the cavity antenna according to the embodiments of the present disclosure will be described first.

As shown in fig. 8, the cavity antenna includes a circuit board 100 and a cavity board 200 made of a conductor material, where the circuit board 100 includes a ground plane (GND) of the antenna system, and the circuit board may be, for example, a PCB (Printed Circuit Board ) that serves as a zero-potential plane of the antenna system, also called ground GND.

The cavity plate 200 is made of metal, and is integrally in a cover structure, and the cavity plate 200 is buckled and connected on the circuit board 100 to form a cavity structure. In some embodiments, the cavity plate 200 may be connected to the circuit board through an SMT (surface mounted technology, surface soldering technique) soldering process.

In the cavity structure formed by welding the cavity board 200 and the circuit board 100, the cavity board has an open end at least at one side, for example, in the example of fig. 8, an opening O is formed at one side of the cavity structure, and the direction of the opening O is the main radiation direction of the cavity antenna, so in the cavity antenna described in the following disclosure, the open end of the antenna may be disposed near the black area, thereby improving the radiation and receiving capability of the cavity antenna in the blackboard area, and further improving the antenna performance.

With continued reference to fig. 8, in order to achieve excitation of the resonant frequency of the antenna, a feed terminal needs to be disposed at the open end O, where one end of the feed terminal is connected to the cavity board 200 at the location of the open end, and the other end is connected to a radio frequency circuit (not shown in the drawing) on the circuit board 200. The radio frequency circuit refers to a radio frequency excitation source of the antenna system, and the cavity board 200 is fed by the radio frequency circuit to radiate and receive antenna signals, and the radio frequency circuit may be, for example, a radio frequency IC (integrated circuit ) chip, which can be understood and fully implemented by those skilled in the art with reference to the related art, and this disclosure will not be repeated.

It should be noted that, referring to fig. 8, since the cavity antenna has a cavity structure, the cavity structure is easily bent or damaged by extrusion during the assembly process of the mobile terminal, which affects the performance of the antenna.

Therefore, in some embodiments of the present disclosure, the feeding terminal K may be provided as a rigid structure, so that the feeding terminal K may be used as a structural support of the open end O, thereby improving the structural strength of the cavity antenna. In other embodiments, referring to fig. 8, a rib groove 210 with a concave-convex structure may be further disposed on the cavity plate 200, where the rib groove 210 may improve the structural strength of the cavity plate 200, and improve the deformation resistance of the cavity plate 200, so as to further ensure the structural strength of the cavity antenna.

In some embodiments, for an all-metal housing mobile terminal, the metal housing itself is a large area conductor plate, so the housing can be connected to the ground GND of the circuit board 100, i.e. the housing is commonly used as the ground GND of the antenna system.

For example, in the example of fig. 9, electrical connection may be established with the back plate 50 on a side of the circuit board 100 facing away from the cavity plate 200. For example, in one example, a connection structure 51 such as a metal spring or spring pin may be provided on the back surface of the circuit board 100, and a stable electrical connection may be established with the back plate 50 through the connection structure 51.

With continued reference to fig. 9, for the circuit board 100, the PCB laminated structure includes multiple layers of metal materials and nonmetal media, which affect the radiation performance of the cavity antenna, so that when the back plate 50 is grounded, the circuit board inside the cavity structure can be hollowed out, that is, a through slot 101 is formed at the position of the circuit board 100 in the cavity structure. Because the through groove 101 exists, the position of the circuit board 100 in the cavity structure is hollowed by removing materials, so that nonmetallic media with great influence on the radiation performance of the antenna are removed, the transmission media are changed into air, the radiation loss is reduced, and the performance of the antenna is further improved.

The above describes the structure of the cavity antenna of the present disclosure, in this embodiment of the present disclosure, the cavity antenna may fuse a plurality of resonant frequency bands, so that multi-band fusion may be implemented by using one cavity antenna, and the resonant principle of the cavity antenna is described briefly below.

For the cavity antenna, the change of different resonant frequencies can be respectively realized by adjusting the size of the cavity plate 200, meanwhile, the resonant frequency adjustment of the cavity antenna can be realized by adjusting the position of the feed terminal K, and for the space of the tablet computer, the space of the tablet computer can be theoretically realized by using the cavity antenna from 0.5GHz to 10 GHz.

Fig. 10 shows a simplified model of the disclosed cavity antenna, in which the rectangular structure is a top view of the cavity board 200, A, B, C, D are four top corners of the cavity board 200, respectively, where the open end is a side from point a to point B, and K is a feeding point position. The current mode from the point A to the point K forms a first resonant frequency, the current mode from the point B to the point K forms a second resonant frequency, the current mode from the point A to the point B forms a third resonant frequency, and meanwhile, a high-order resonant mode is formed in the cavity to generate a fourth resonant frequency with a plurality of current zero points.

In the bias feed state shown in fig. 10, the first resonance frequency > the second resonance frequency > the third resonance frequency. For the fourth resonant frequency, since the fourth resonant frequency is a higher-order resonant mode, a specific excited higher-order mode frequency needs to be determined with reference to the size of the entire cavity structure, which is understood and fully implemented by those skilled in the art, and will not be described in detail in this disclosure.

After understanding the cavity antenna principle described above, the structure and principle of the antenna system of the mobile terminal in the embodiments of the present disclosure will be described below.

In some embodiments, the first antenna and the second antenna described in the present disclosure are described by taking a WiFi antenna as an example, that is, the first antenna is a first WiFi antenna, and the second antenna is a second WiFi antenna. It will be appreciated by those skilled in the art that the first and second antennas described in this disclosure are not limited to WiFi antennas, but may be any other antenna suitable for implementation, such as LTE antennas, SUB-6G antennas, etc., and this disclosure is not limited thereto.

In the embodiment of the disclosure, the first WiFi antenna and the second WiFi antenna can be realized by using the cavity antenna, so that the performance of the WiFi antenna is improved in the mobile terminal with the all-metal casing. In addition, in the embodiment of the present disclosure, the first WiFi antenna and the second WiFi antenna are respectively disposed near two sides of the mobile terminal, so as to consider WiFi performance under a horizontal screen or vertical screen usage scenario, and the description below is made with reference to fig. 11.

As shown in fig. 11, the first WiFi antenna (WiFi-1) is disposed near a first side, which in this example is a top short side; the second WiFi antenna (WiFi-2) is arranged close to a second side adjacent to the first side, and the second side is the right long side.

It can be understood that for the mobile terminal, the mobile terminal has a horizontal screen use mode and a vertical screen use mode, meanwhile, due to the directional radiation characteristic of the cavity antenna, if the WiFi antenna is only arranged on one short side, the polarization direction of the antenna is mainly along the vertical screen direction, so that the WiFi signal is better only in the vertical screen scene, and the WiFi signal is attenuated to a certain extent in the horizontal screen scene. On the contrary, if the WiFi antenna is arranged on the long side of one side, the polarization direction of the antenna is mainly along the transverse screen direction, so that the WiFi signal is better only in the transverse screen scene, and the WiFi signal is attenuated to a certain extent in the vertical screen scene.

Therefore, in the embodiment of the disclosure, the cavity WiFi antennas are respectively arranged on the adjacent first side edge and second side edge, so that the polarization directions of the two WiFi antennas can cover the horizontal screen scene and the vertical screen scene, and the user has better WiFi radiation performance no matter in the use process of the horizontal screen or the vertical screen.

It should be noted that, in the example of fig. 11, the positions of the first WiFi antenna and the second WiFi antenna are merely examples, and are not limited to the positions in the figure, as long as the first WiFi antenna and the second WiFi antenna are guaranteed to be located at two adjacent sides, respectively, which will be understood by those skilled in the art, and the disclosure is not repeated.

According to the embodiment of the disclosure, the WiFi antenna is arranged as the cavity antenna, so that the WiFi performance requirement of the mobile terminal with the all-metal shell can be met, the metal shell is not required to be provided with a fracture, and the appearance texture is improved. And, set up two wiFi antennas and be located adjacent side respectively to can cover the radiation direction of horizontal screen scene and vertical screen scene, improve the wiFi performance in the user use.

With continued reference to fig. 11, in some embodiments of the present disclosure, the mobile terminal further includes a camera module 60, where the camera module 60 is disposed corresponding to the position of the avoidance hole 55 shown in fig. 5. As can be seen from the use scenario described above in connection with fig. 2 and 3, the camera module 60 is located in the target clearance area C, so that the camera module 60 is located in a dominant area of the antenna design.

In the embodiment of the disclosure, the antenna system further includes a third antenna, and the third antenna may be disposed at the position of the camera module 60. For example, in some embodiments, the third antenna may be an FPC antenna or an LDS antenna provided on the camera module 60.

It should be noted that, in the embodiment of the present disclosure, the third antenna may be used in combination with the first antenna and the second antenna to further perform complementary optimization with respect to the polarization direction of the antenna system.

In one aspect, in the mobile terminal with the all-metal casing, the polarization direction of the third antenna on the camera module 60 is mainly towards the back of the mobile terminal and the polarization directions of the first antenna and the second antenna in the cavity form are mainly towards the front of the mobile terminal, so that the antenna efficiency in all directions of the mobile terminal can be effectively improved by using the combination of the first antenna, the second antenna and the third antenna.

On the other hand, in some embodiments of the present disclosure, the third antenna is configured as two mutually perpendicular radiators, which are a first radiator and a second radiator, for example, in the tablet computer scenario of the foregoing example, the first radiator is configured as a strip radiator parallel to the short side, and the second radiator is configured as a strip radiator parallel to the long side, so that the polarization direction of the first radiator is complementary to the polarization direction of the second radiator, and the third antenna can be ensured to have better antenna performance no matter whether the user uses the tablet computer with a horizontal screen or a vertical screen.

In some exemplary embodiments, the third antenna is still exemplified by a WiFi antenna, i.e., the third antenna is a third WiFi antenna. It will be appreciated by those skilled in the art that the third antenna described in the present disclosure is not limited to a WiFi antenna, but may be any other antenna suitable for implementation, such as an LTE antenna, SUB-6G antenna, etc., and the present disclosure is not limited thereto.

As shown in fig. 11, a third WiFi antenna (WiFi-0) is disposed on the camera module 60, and for the sake of clarity of the drawing, the first radiator and the second radiator are not specifically shown in fig. 11. For example, in some embodiments, the first radiator and the second radiator of the third WiFi antenna may be disposed on the decorative board of the camera module 60 through FPC technology or LDS technology, and signal radiation and reception in the WiFi frequency band are achieved by feeding and grounding the first radiator and the second radiator.

It will be appreciated that for the third WiFi antenna (WiFi-0) on the camera module 60, since it is located in the target clearance area C, the area is not gripped during use of the mobile terminal, whether the user uses the mobile terminal horizontally or vertically, and thus the area has a good antenna clearance environment. Therefore, in some embodiments of the present disclosure, the third WiFi antenna may be set to a dual-frequency WiFi antenna, that is, the working frequency band of the third WiFi antenna includes a WiFi 2.4G frequency band and a WiFi 5G frequency band, for example, the working frequency band of the first radiator that may set to the third WiFi antenna is a WiFi 2.4G frequency band, and the working frequency band of the second radiator is a WiFi 5G, so that the third WiFi antenna may form a complementary dual-frequency WiFi with the first WiFi antenna and the second WiFi antenna all the time, and the WiFi performance of the mobile terminal is improved.

It should be noted that, for most of the current radio frequency circuit architectures, only two antennas can be supported to work simultaneously, and in the antenna system of the embodiment of the disclosure, 3 antennas, for example, 3 WiFi antennas are included in the embodiment of fig. 11, so in the embodiment of the disclosure, the switching operation of the WiFi antennas can be controlled by the signal switching unit 420.

In some embodiments, considering that the third WiFi antenna (WiFi-0) located on the camera module 60 is located in the target clearance area C, the third WiFi antenna may be used as a resident antenna, and the first WiFi antenna and the second WiFi antenna may be switched according to the usage scenario.

As shown in fig. 11, a circuit board of the mobile terminal is provided with a radio frequency circuit 410, a signal switching unit 420, a controller 430 and a detection sensor 440.

The rf circuit 410 is an rf excitation source of the antenna system, and feeds the antenna through the rf circuit 410, so as to radiate and receive the antenna resonance signal. In some implementations, the radio frequency circuit 410 may be, for example, a radio frequency IC (integrated circuit ) chip. In the disclosed embodiment, the radio frequency circuit 410 is connected to a third WiFi antenna (WiFi-0) (not shown) so that the third WiFi antenna remains operational as a resident antenna.

The signal switching unit 420 includes a first end, a second end and a third end, the first end is connected to the radio frequency circuit 410, the second end is connected to the first WiFi antenna, the third end is connected to the second WiFi antenna, and the signal switching unit 420 is configured to switch between the first end and the second end, and between the first end and the third end.

For example, in the example of fig. 11, when the first terminal and the second terminal of the signal switching unit 420 are turned on, the radio frequency circuit 410 is connected to the first WiFi antenna, so that the first WiFi antenna and the third WiFi antenna operate simultaneously. And when the first end of the signal switching unit 420 is turned on with the third end, the radio frequency circuit 410 is connected to the second WiFi antenna, so that the second WiFi antenna and the third WiFi antenna operate simultaneously.

According to the method, the polarization direction of the first WiFi antenna is mainly the using direction of the vertical screen, and the performance is better in a vertical screen scene; and the polarization direction of the second WiFi antenna is mainly the using direction of the transverse screen, so that the performance is better in the transverse screen scene. Therefore, in some embodiments of the present disclosure, the first WiFi antenna and the second WiFi antenna may be dynamically switched according to a current usage scenario of the mobile terminal.

For example, in the example of fig. 11, the detection sensor 440 refers to a device for detecting the current use direction of the mobile terminal, and the detection sensor 440 may include, for example, an accelerometer, a gyroscope, etc., so that when the pose of the mobile terminal changes, the detection sensor 440 can detect pose data.

The controller 430 refers to a main control device of the mobile terminal, and may be, for example, a CPU (central processing unit ) of the mobile terminal, a SoC (System on Chip), or the like.

The controller 430 may include a processor, which may be of any type, with one or more processing cores, and a memory. It may perform single-threaded or multi-threaded operations for parsing instructions to perform operations such as fetching data, performing logical operation functions, and delivering operational processing results. The memory may include volatile and nonvolatile computer-readable storage media and may have program storage areas for storing nonvolatile software programs, nonvolatile computer-executable programs, and modules for retrieval by a processor to cause the processor to perform one or more method steps. The memory may also include a volatile random access medium, or a storage portion such as a hard disk, as a data storage area for storing the result of the arithmetic processing and the data issued and outputted by the processor.

In the embodiment of the present disclosure, the controller 430 is connected to the detection sensor 440, so that the controller 430 may receive the pose data collected by the detection sensor 440 and determine the current use direction of the mobile terminal, such as a horizontal screen use or a vertical screen use, according to the pose data.

The controller 430 is connected to the control end of the signal switching unit 420, so that after determining the current use direction of the mobile terminal, the controller 430 can send a control instruction to the signal switching unit 420, thereby controlling the signal switching unit 420 to switch on.

For example, if the controller 430 determines that the mobile terminal is currently in use with a vertical screen, the signal switching unit may be controlled to conduct the first terminal with the second terminal, where the first WiFi antenna is conducted and operated. For example, if the controller 430 determines that the mobile terminal is currently used by a flat screen, the signal switching unit may be controlled to conduct the first terminal with the third terminal, and at this time, the second WiFi antenna is conducted and operated.

In some embodiments, one of the first WiFi antenna and the second WiFi antenna operates in a WiFi 2.4G frequency band, and the other operates in a WiFi 5G frequency band.

According to the embodiment of the disclosure, the first WiFi antenna and the second WiFi antenna are dynamically switched by detecting the use direction of the mobile terminal, so that the WiFi antenna has better radiation performance in the current use scene, and the WiFi signal strength is improved.

In addition, through first wiFi antenna or second wiFi antenna of third wiFi antenna cooperation, the main radiation direction orientation mobile terminal back of third wiFi antenna, and the main radiation direction orientation mobile terminal front of first wiFi antenna and second wiFi antenna of cavity structure to mobile terminal all has better wiFi performance in all directions, improves user's use experience.

It should be noted that, in the foregoing embodiments, only the radiator arrangement of the antenna system of the mobile terminal is described, and other electrical structures included in the antenna system, such as a radio frequency circuit, a matching circuit, a tuning switch, etc., will be understood and fully implemented by those skilled in the art with reference to the related art, which is not repeated in this disclosure.

A block diagram of a mobile terminal according to some embodiments of the present disclosure is shown in fig. 12, and the principles related to the mobile terminal according to some embodiments of the present disclosure are explained below with reference to fig. 12.

Referring to fig. 12, the mobile terminal 1800 may include one or more of the following components: a processing component 1802, a memory 1804, a power component 1806, a multimedia component 1808, an audio component 1810, an input/output (I/O) interface 1812, a sensor component 1816, and a communication component 1818.

The processing component 1802 generally controls overall operation of the mobile terminal 1800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. Further, the processing component 1802 may include one or more modules that facilitate interactions between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. As another example, the processing component 1802 may read executable instructions from a memory to implement mobile terminal related functions.

The memory 1804 is configured to store various types of data to support operation at the mobile terminal 1800. Examples of such data include instructions for any application or method operating on the mobile terminal 1800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply assembly 1806 provides power to the various components of the mobile terminal 1800. The power components 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the mobile terminal 1800.

The multimedia component 1808 includes a display screen between the mobile terminal 1800 and the user that provides an output interface. In some embodiments, the multimedia component 1808 includes a front-facing camera and/or a rear-facing camera. The front camera and/or the rear camera may receive external multimedia data when the mobile terminal 1800 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 1810 is configured to output and/or input audio signals. For example, the audio component 1810 includes a Microphone (MIC) configured to receive external audio signals when the mobile terminal 1800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 1804 or transmitted via the communication component 1818. In some embodiments, audio component 1810 also includes a speaker for outputting audio signals.

The I/O interface 1812 provides an interface between the processing component 1802 and a peripheral interface module, which may be a keyboard, click wheel, button, or the like. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 1816 includes one or more sensors for providing status assessment of various aspects of the mobile terminal 1800. For example, the sensor assembly 1816 may detect the on/off state of the mobile terminal 1800, the relative positioning of the assemblies, the sensor assembly 1816 may also detect the change in position of the mobile terminal 1800 or a component of the mobile terminal 1800, the presence or absence of user contact with the mobile terminal 1800, the orientation or acceleration/deceleration of the mobile terminal 1800, and the change in temperature of the mobile terminal 1800. The sensor assembly 1816 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 1816 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1818 is configured to facilitate communication between the mobile terminal 1800 and other devices, either by wire or wirelessly. The mobile terminal 1800 may access a wireless network, such as Wi-Fi,2G,3G,4G,5G, or 6G, or a combination thereof, based on a communication standard. In one exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 1818 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the mobile terminal 1800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements.

It should be apparent that the above embodiments are merely examples for clarity of illustration and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the present disclosure.

Claims

1. A mobile terminal, comprising:

2. The mobile terminal according to claim 1, wherein,

the antenna system also comprises a radio frequency circuit and a signal switching unit which are arranged on the circuit board of the mobile terminal, wherein the signal switching unit comprises a first end, a second end and a third end, the first end is connected with the radio frequency circuit, the second end is connected with a first antenna, and the third end is connected with a second antenna;

3. The mobile terminal of claim 2, further comprising:

The detection sensor is used for detecting pose data of the mobile terminal;

4. The mobile terminal according to claim 1, wherein,

the frequency bands of the first antenna and the second antenna are the same, and/or the antenna uses are the same.

5. The mobile terminal according to claim 4, wherein,

the first antenna and the second antenna are WiFi antennas, and the working frequency band of one of the first antenna and the second antenna comprises a WiFi 2.4G frequency band, and the working frequency band of the other one of the first antenna and the second antenna comprises a WiFi 5G frequency band.

6. A mobile terminal according to any one of claims 1 to 5, characterized in that,

the antenna system further comprises a third antenna, the third antenna is arranged on the camera module of the mobile terminal, the third antenna comprises a first radiator and a second radiator which are arranged perpendicular to each other, the first radiator is configured to have a polarization direction complementary to that of the first antenna, and the second radiator is configured to have a polarization direction complementary to that of the second antenna.

7. The mobile terminal of claim 6, wherein the mobile terminal comprises a mobile terminal,

the third antenna is a WiFi antenna, the first radiator is configured to have an operating frequency band including one of a WiFi 2.4G frequency band and a WiFi 5G frequency band, and the second radiator is configured to have an operating frequency band including the other of the WiFi 2.4G frequency band and the WiFi 5G frequency band.

8. The mobile terminal of claim 6, wherein the mobile terminal comprises a mobile terminal,

the first radiator and the second radiator are FPC antenna radiators or LDS antenna radiators.

9. A mobile terminal according to any one of claims 1 to 5, characterized in that,

the cavity antenna comprises a cavity plate made of a conductor material, the cavity plate is buckled and connected to a circuit board of the mobile terminal, the inner wall of the cavity plate and the circuit board form a cavity structure, and one side surface of the cavity structure is an open end;

10. The mobile terminal of claim 9, wherein the mobile terminal comprises a mobile terminal,

one side of the circuit board, which is away from the cavity plate, is electrically connected with the back plate, and a through groove is formed in the position of the circuit board corresponding to the cavity structure;

Or alternatively, the process may be performed,

at least one raised reinforcing rib groove is formed in the cavity plate.