CN110277642B

CN110277642B - Mobile terminal

Info

Publication number: CN110277642B
Application number: CN201910634833.6A
Authority: CN
Inventors: 丁市召; 胡育根
Original assignee: Hisense Mobile Communications Technology Co Ltd
Current assignee: Hisense Mobile Communications Technology Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2021-02-02
Anticipated expiration: 2039-07-15
Also published as: CN110277642A

Abstract

The invention provides a mobile terminal. The mobile terminal includes at least: a first housing assembly and a second housing assembly that are foldable; the first end of the first housing component is connected with the first end of the second housing component; a first antenna branch and a first metal body are arranged in the second end of the first shell component; a second antenna branch and a second metal body are arranged in a second end in the second shell component; the second metal body is parallel to the antenna radiator of the second antenna branch; when the mobile terminal is in a folded state, the first shell assembly is attached to the second shell assembly, the first metal body is parallel to the second metal body, the first metal body is grounded, and the second metal body is located between the first antenna branch and the second antenna branch. The mobile terminal of the embodiment of the invention has higher antenna isolation and does not influence the directivity of the antenna.

Description

Mobile terminal

Technical Field

The invention relates to the technical field of antennas, in particular to a mobile terminal.

Background

With the technical update of mobile terminal products and the fast iteration of products, the design forms of products such as mobile phones or wearable devices are not limited to the traditional design schemes, and designs such as folding screens and flexible screens are more and more widely applied. Meanwhile, the 5G technology is widely applied to the fields of mobile terminals, such as mobile phones, internet of things devices and the like, as a next-generation communication technology. In order to improve the quality and transmission rate of mobile terminal signals, the multi-antenna technology is a necessary trend of the 5G technology. Meanwhile, the design requirements of large screen and full metallization of the existing mobile terminal are continuously improved, and the design of high radiation efficiency and high isolation of the antenna becomes a difficult problem of the design of the mobile terminal along with the multiplied increase of the design quantity of the antenna in the smaller and smaller headroom environment.

At present, the isolation design of the close-distance common-frequency multi-antenna mainly adopts the ground coupling routing between different antenna radiators to increase the isolation of the antenna, but the isolation design has the defects that the directivity of the antenna is deviated to one side direction of the non-isolation routing, the performance of the omnidirectional antenna is influenced by the directivity, and the signal in a certain direction is deteriorated.

Disclosure of Invention

The invention provides a mobile terminal, which aims to improve the isolation of an antenna in the mobile terminal and has small influence on the performance of the antenna.

The present invention provides a mobile terminal, comprising:

a first housing assembly and a second housing assembly that are foldable; the first end of the first housing component is connected with the first end of the second housing component;

a first antenna branch and a first metal body are arranged in the second end of the first shell component;

a second antenna branch and a second metal body are arranged in a second end in the second shell component; the second metal body is parallel to the antenna radiator of the second antenna branch;

when the mobile terminal is in a folded state, the first shell assembly is attached to the second shell assembly, the first metal body is parallel to the second metal body, the first metal body is grounded, and the second metal body is located between the first antenna branch and the second antenna branch.

The mobile terminal provided by the embodiment of the invention at least comprises: a first housing assembly and a second housing assembly that are foldable; the first end of the first housing component is connected with the first end of the second housing component; a first antenna branch and a first metal body are arranged in the second end of the first shell component; a second antenna branch and a second metal body are arranged in a second end in the second shell component; the second metal body is parallel to the antenna radiator of the second antenna branch; when mobile terminal is in fold condition, first casing subassembly with the laminating of second casing subassembly, first metal body with the second metal body is parallel, first metal body ground connection, the second metal body is located first antenna branch with between the second antenna branch for mobile terminal is under fold condition, and first metal body and second metal body ground connection form between first antenna branch and second antenna branch and keep apart the line of walking, make antenna isolation higher, and mobile terminal is under the expansion state moreover, and the distance is far away between first metal body and the second metal body, can not form coupling effect, does not have isolation function, therefore does not influence the directionality of antenna.

Drawings

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

Fig. 1 is a schematic overall structure diagram of an embodiment of a mobile terminal provided in the present invention;

fig. 2 is a schematic overall structure diagram of another embodiment of the mobile terminal provided in the present invention;

FIG. 3 is a schematic cross-sectional view of a first housing assembly according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a second housing assembly according to an embodiment of the present invention;

fig. 5 is a cross-sectional view illustrating a folded state of the mobile terminal according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a first housing assembly of another embodiment provided by the present invention;

fig. 7 is a cross-sectional view schematically illustrating a folded state of the mobile terminal according to another embodiment of the present invention;

fig. 8 is a block diagram illustrating a mobile terminal according to an example embodiment.

Description of reference numerals:

10. a first end; 11. a second end;

20. a first housing assembly; 30. a second housing assembly;

21. a first antenna branch; 22. a third antenna branch;

25. a first metal body; 251. a first portion;

252. a second portion; 31. a second antenna branch;

33. a second metal body.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

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

The terms "comprising" and "having," and any variations thereof, in the description and claims of this invention and the drawings described herein are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Firstly, the application scene related to the invention is introduced:

the mobile terminal provided by the embodiment of the invention can be a foldable mobile terminal, and aims to improve the isolation of the antenna in the mobile terminal, namely, the antenna with high isolation is realized in a multi-antenna environment in a limited space of the mobile terminal.

The mobile terminal in the embodiment of the present invention may include, but is not limited to: mobile terminals such as mobile phones, tablet computers, wearable devices and the like.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 1 is a schematic overall structure diagram of an embodiment of a mobile terminal provided in the present invention. As shown in fig. 1 to fig. 5, the mobile terminal provided in this embodiment at least includes:

a first housing assembly 20 and a second housing assembly 30 that are foldable; a first end of the first housing assembly 20 and a first end of the second housing assembly 30 are connected;

a first antenna branch 21 and a first metal body 25 are provided within the second end of the first housing component 20;

a second antenna branch 31 and a second metal body 33 are provided in a second end of the second housing component 30; the second metal body 33 is parallel to the antenna radiator of the second antenna branch 31;

when the mobile terminal is in a folded state, the first housing component 20 and the second housing component 30 are attached to each other, the first metal body 25 and the second metal body 33 are parallel to each other, the first metal body 25 is grounded, and the second metal body 25 is located between the first antenna branch 21 and the second antenna branch 31.

Specifically, the foldable mobile terminal in the embodiment of the invention has a working scene of the same-frequency antenna. For example, the mobile terminal has two portions of same-frequency antenna radiators respectively located at two opposite ends of the mobile terminal, such as a first end 10 and a second end 11 in fig. 1, where the mobile terminal in fig. 1 is in an expanded state, the first end 10 and the second end 11 are far away, and at this time, the antenna radiators of the first antenna branch and the second antenna branch are far away; in fig. 2, the mobile terminal is in a folded state, the first housing assembly and the second housing assembly are attached, the first end 10 and the second end 11 are close to each other, and at this time, the antenna radiators of the first antenna branch and the second antenna branch are close to each other.

As shown in fig. 3, it is assumed that an end of the first housing component 20 connected to the second housing component 30 is a first end, and an end away from the second housing component 30 is a second end, and fig. 3 is a cross section of the second end of the first housing component 20, at least a first antenna branch 21 (including an antenna radiator and a signal source, such as an LTE signal source 23) and a first metal body 25 are disposed in the first housing component 20.

As shown in fig. 4, it is assumed that an end of the second housing component 30 connected to the first housing component 20 is a first end, and an end away from the first housing component 20 is a second end, and fig. 4 is a cross section of the second end of the second housing component 30, and at least a second antenna branch 31 (including an antenna radiator and a signal source, such as an LTE signal source 32) and a second metal body 33 are disposed in the second housing component 30. The second metal body 33 is parallel to the antenna radiator of the second antenna branch 31. The self-resonant frequency of the second metal body 33 is different from the operating frequency band of the second antenna branch 31.

As shown in fig. 5, when the mobile terminal is in a folded state, the first housing component 20 is attached to the second housing component 30, the second end of the first housing component 20 is close to the second end of the second housing component 30, the first metal body 25 is parallel to the second metal body 33, the first metal body 25 is grounded, and the second metal body 33 is located between the first antenna branch 21 and the second antenna branch 31.

At this time, the first antenna branch 21 and the second antenna branch 31 are close to each other, which causes the antenna isolation to be poor, which results in a reduction in the transmission rate, and the first metal body 25 and the second metal body 33 are designed to improve the antenna isolation. That is, the first metal body 25 and the second metal body 33 are close to each other and can conduct electricity through electromagnetic coupling or direct contact, so that the half-wavelength and grounded electrical length of the working frequency band of the same-frequency antenna is formed, the coupling grounding isolation routing of the same-frequency antenna is formed, and the antenna isolation can be effectively improved.

When the mobile terminal is in an unfolded state (or a certain angle is formed between the first shell assembly and the second shell assembly), namely, the first antenna branch and the second antenna branch are far away from each other, the first metal body and the second metal body can be ungrounded, and due to the fact that the distance is far, the coupling effect is not formed, and the respective electrical lengths of the first metal body and the second metal body do not have half-wavelength of the working frequency band of the same-frequency antenna, the influence on the antenna directivity cannot be caused in the scene.

The frequency bands of the first antenna branch and the second antenna branch may be the same. Further, the first antenna branch and the second antenna branch may be different antenna structures or the same antenna structure. Such as a monopole antenna, a PIFA antenna, or a loop antenna, etc.

In other embodiments of the present invention, the mobile terminal may include more than two housing assemblies, that is, more than two folding surfaces, which is not limited in the present invention.

In the above way, for a mobile terminal with multiple forms and multiple use scenes such as a folding screen, the optimal design of the antenna with the same frequency (such as 4G LTE, WIFI, same frequency MIMO, same frequency main diversity and the like) in different working scenes is realized.

The mobile terminal of this embodiment at least includes: a first housing assembly and a second housing assembly that are foldable; the first end of the first housing component is connected with the first end of the second housing component; a first antenna branch and a first metal body are arranged in the second end of the first shell component; a second antenna branch and a second metal body are arranged in a second end in the second shell component; the second metal body is parallel to the antenna radiator of the second antenna branch; when mobile terminal is in fold condition, first casing subassembly with the laminating of second casing subassembly, first metal body with the second metal body is parallel, first metal body ground connection, the second metal body is located first antenna branch with between the second antenna branch for mobile terminal is under fold condition, and first metal body and second metal body ground connection form between first antenna branch and second antenna branch and keep apart the line of walking, make antenna isolation higher, and mobile terminal is under the expansion state moreover, and the distance is far away between first metal body and the second metal body, can not form coupling effect, does not have isolation function, therefore does not influence the directionality of antenna.

On the basis of the above embodiment, as shown in fig. 6, at least one third antenna branch 22 is further disposed in the second end of the first housing component 20, and the first metal body 25 is disposed between the first antenna branch 21 and the adjacent third antenna branch 22.

In other embodiments of the present invention, the number of the third antenna branches 22 may be at least two, that is, the first housing component 20 of the mobile terminal may include a plurality of antenna branches, and a first metal body may be disposed between any two antenna branches, that is, the number of the first metal bodies may be multiple, and the first metal body may be grounded, so as to improve the isolation between the antenna branches.

In other embodiments of the present invention, a plurality of second antenna branches may also be disposed in the second housing assembly, and an isolation grounding trace may be disposed between the second antenna branches, for example, the second metal body may be located between adjacent second antenna branches, and the second metal body may be grounded.

Further, as shown in fig. 7, the first metal body 25 includes: the first and

second portions

251, 252 connected to each other; the second portion 252 is perpendicular to the first portion 251, that is, the first metal body may be T-shaped, if the first housing component 20 and the second housing component 30 are attached, the first portion 251 and the second metal body 33 are parallel, and the second portion 252 is grounded.

Wherein the frequency bands in which the first antenna branch 21 and the third antenna branch 22 operate may be different.

For example, the signal source of the first antenna branch 21 is an LTE signal source, and the signal source of the third antenna branch 22 is a WIFI signal source. Because LTE high-frequency range and WIFI2.4GHz have the overlapping frequency channel, be equipped with first metal body 25 between the antenna radiator of first antenna branch 21 and third antenna branch 22, this first metal body 25 has the half wavelength electric length of required isolation frequency channel, can promote LTE and WIFI isolation (in mobile terminal's expansion state and fold condition), first metal body 25 has the parallel part with second metal body 33 simultaneously, the line (in mobile terminal's fold condition) is kept apart as coupling ground to the compatible conduct. For example, the first metal body may be T-shaped.

Further, the first metal body 25 is grounded through at least one isolation circuit;

wherein the isolation circuit comprises:

an inductance; or, a capacitance; or the like, or, alternatively,

an inductor and a capacitor connected in series; or an inductor and a capacitor connected in parallel; or the like, or, alternatively,

a band pass filter or a band stop filter; or the like, or, alternatively,

an active switch.

The inductor may be a variable inductor, and the capacitor may be a variable capacitor.

Specifically, the first metal body 25 may be connected to an active switch, a capacitor, a resistor, or the like to realize multi-frequency isolation. The inductance and the capacitance in the isolation circuit can also be variable inductance-capacitance devices, so that the tuning of the required isolation frequency band is formed, and the isolation compatibility of the multi-frequency antenna can be realized.

In the embodiment of the invention, the number of the antenna branches, the number of the grounding points and the like are not limited.

In the antenna of the embodiment, the grounding isolation direction is arranged between the first antenna branch and the third antenna branch, so that the isolation degree between the antennas is improved.

On the basis of the above embodiment, further, the first metal body and the second metal body are electrically conductive in an electromagnetic coupling manner or in a direct contact manner.

If the first metal body and the second metal body are conductive in a direct contact mode, and if the first shell assembly and the second shell assembly are attached, the first metal body and the second metal body are connected through a connector and/or a contact.

Specifically, the first metal body and the second metal body may be electrically conductive by electromagnetic coupling or by direct contact.

As shown in fig. 7, when the mobile terminal is in a folded state, the first housing assembly 20 is attached to the second housing assembly 30, the second end of the first housing assembly 20 is close to the second end of the second housing assembly 30,

Specifically, connectors may be disposed inside the first housing assembly and the second housing assembly, and/or contacts may be disposed on surfaces of the first housing assembly and the second housing assembly, so that the first metal body 25 and the second metal body 33 are directly contacted to conduct electricity when the mobile terminal is in a folded state.

The antenna of the embodiment realizes the low-cost compatible design of multi-scene high isolation and no directional influence through the design of two parts of metal bodies between the antennas with the same frequency.

Fig. 8 is a block diagram illustrating a mobile terminal according to an example embodiment. For example, the mobile terminal may be a smartphone, a computer, a tablet device, a wearable device, and the like.

Referring to fig. 8, the mobile terminal may further include one or more of the following components: processing component 602, memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, and communication component 616.

The processing component 602 generally controls overall operation of the mobile terminal, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.

The memory 604 is configured to store various types of data to support operation of the mobile terminal. Examples of such data include instructions for any application or method operating on the mobile terminal, contact data, phonebook data, messages, pictures, videos, and the like. The memory 604 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 606 provides power to the various components of the mobile terminal. The power components 606 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the mobile terminal.

The multimedia component 608 includes a screen that provides an output interface between the mobile terminal and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 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 is in an operation 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 a focal length and optical zoom capability.

The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a Microphone (MIC) configured to receive external audio signals when the mobile terminal is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.

The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 614 includes one or more sensors for providing various aspects of state assessment for the mobile terminal. For example, the sensor component 614 may detect an open/closed state of the mobile terminal, the relative positioning of components, such as a display and keypad of the mobile terminal, the sensor component 614 may also detect a change in the position of the mobile terminal or a component of the mobile terminal, the presence or absence of user contact with the mobile terminal, orientation or acceleration/deceleration of the mobile terminal, and a change in the temperature of the mobile terminal. The sensor assembly 614 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 614 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 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 616 is configured to facilitate communications between the mobile terminal and other devices in a wired or wireless manner. The mobile terminal may access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, or 5G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 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.

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

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

Claims

1. A mobile terminal, characterized in that it comprises at least:

a second antenna branch and a second metal body are arranged in a second end in the second shell component; the second metal body is parallel to the antenna radiator of the second antenna branch; the frequency band of the first antenna branch and the frequency band of the second antenna branch are the same;

2. The mobile terminal of claim 1, wherein at least one third antenna branch is further disposed within the second end of the first housing assembly, the first metal body being between the first antenna branch and the adjacent third antenna branch.

3. The mobile terminal of claim 1, wherein the first metal body comprises: a first portion and a second portion connected to each other; the second part is perpendicular to the first part, and if the first shell assembly and the second shell assembly are attached, the first part is parallel to the second metal body, and the second part is grounded.

4. A mobile terminal according to any of claims 1-3,

the first metal body and the second metal body are electrically conductive in an electromagnetic coupling mode or in a direct contact mode.

5. The mobile terminal of claim 4, wherein if the first metal body and the second metal body are electrically conductive in a direct contact manner, if the first housing assembly and the second housing assembly are attached to each other, the first metal body and the second metal body are connected to each other through a connector and/or a contact.

6. The mobile terminal of claim 2,

the first antenna branch and the third antenna branch operate in different frequency bands.

7. A mobile terminal according to any of claims 1-3, wherein the first metal body is connected to ground via at least one isolation circuit;

wherein the isolation circuit comprises:

an inductance; or, a capacitance; or the like, or, alternatively,

a band pass filter or a band stop filter; or the like, or, alternatively,

an active switch.

8. The mobile terminal of claim 7, wherein the inductor is a variable inductor and the capacitor is a variable capacitor.

9. A mobile terminal according to any of claims 1-3, characterized in that the first antenna branch and the second antenna branch are different antenna structures, or the same antenna structure.