CN214706226U - Mobile terminal - Google Patents

Abstract

The utility model provides a mobile terminal relates to mobile terminal technical field. The mobile terminal includes a main body and an antenna assembly. The main body has a top and a mounting side disposed adjacent to each other. The antenna assembly comprises a main board, a small board, a tuning circuit and an antenna which are arranged inside the main body. The main board is arranged at the top, and the small board is arranged at the mounting side; the antenna is connected with the small plate and is positioned on the mounting side edge; the tuning circuit is arranged on the small plate and is electrically connected with the antenna, and the tuning circuit is configured to switch the receiving and transmitting frequency bands of the antenna. The utility model provides a mobile terminal can improve among the prior art antenna installation space and reduce the problem that leads to the antenna installation complicated.

Description

Mobile terminal

Technical Field

The utility model relates to a mobile terminal technical field particularly, relates to a mobile terminal.

Background

With the rapid development of smart phones, the smart phones increasingly pay attention to customer experience, the screen occupation ratio is one of the most important customer experience, and the larger the smart phone screen is, the larger the screen occupation ratio is, the larger the screen is, and the more favorable the customer experience can be seen from a calculation formula of the screen occupation ratio.

Communication networks are rapidly developed, the requirements for the functions of mobile phones are gradually increased, and the design and manufacture of the mobile phones are more and more complicated. For the antenna, due to the enlargement of the screen size, the thinning of the thickness of the mobile phone, and the increase of the devices in the antenna area, the design difficulty of the antenna is also increasing continuously.

The current cell-phone low frequency antenna is generally all at cell-phone top or bottom, and there are earphone seat and USB, loudspeaker, light sense, multiple devices such as MIC at top or bottom for near environment of antenna is complicated, and along with cell-phone screen accounts for the increase simultaneously, the attenuation of cell-phone thickness, the installation space of antenna reduces thereupon, and the design degree of difficulty of antenna also is constantly increasing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mobile terminal, it can improve among the prior art antenna installation space and reduce the problem that leads to the antenna setting complicacy.

The embodiment of the utility model discloses a can realize like this:

an embodiment of the utility model provides a mobile terminal, including main part and antenna module;

the main body is provided with a top and a mounting side which are adjacently arranged;

the antenna assembly comprises a main board, a small board, a tuning circuit and an antenna which are arranged inside the main body;

the main board is arranged at the top, and the small board is arranged at the mounting side edge; the antenna is connected with the small plate and is positioned on the mounting side edge; the tuning circuit is arranged on the small plate and electrically connected with the antenna, and the tuning circuit is used for switching the receiving and transmitting frequency band of the antenna.

The utility model provides a mobile terminal includes for prior art's beneficial effect:

in the mobile terminal, the small plate and the antenna in the antenna assembly are arranged on the mounting side edge of the main body, and other parts on the mounting side edge are fewer relative to other parts on the top and the bottom of the main body, so that the area where the antenna can be mounted on the mounting side edge is larger, and the problem that the antenna is complex to mount due to the fact that the mounting space of the antenna is reduced is solved.

Optionally, the antenna assembly further includes an FPC board disposed inside the main body for supplying power to the small board, and the main board is connected to the small board through the FPC board.

Optionally, the antenna assembly further includes a cable connecting line, and two ends of the cable connecting line are connected to the main board and the small board respectively.

Optionally, the antenna is an IFA antenna.

Optionally, the antenna assembly further includes a spring piece, and the spring piece is disposed on the small plate and connected to the motherboard; the antenna has a feed point and a ground point; the feed point is connected with the mainboard through the elastic sheet; the grounding point is connected with the small plate through the elastic sheet.

Optionally, the antenna includes an open-circuit stub, a short-circuit stub, and a feed stub;

one end of the short-circuit branch, one end of the open-circuit branch and one end of the feed branch are electrically connected, and the antenna is made to be F-shaped;

the other end of the short circuit branch forms a grounding point; the other end of the feeding branch forms the feeding point.

Optionally, the tuning circuit comprises a first branch and a second branch;

the first branch is provided with a first capacitor, an adjustable capacitor and an inductance branch which are mutually connected in parallel, and the inductance branch is provided with an inductor and a first switch in series; one end of the first branch is connected to the antenna, and the other end of the first branch is connected to the power amplifier;

a second capacitor and a second switch which are mutually connected in series are arranged on the second branch circuit; and one end of the second branch is connected to one end of the first branch close to the power amplifier, and the other end of the second branch is grounded.

Optionally, the value of the inductance is 10 nH.

Optionally, the value of the second capacitor is 100 pF.

Optionally, the antenna assembly further includes a protection branch, and a transient diode is disposed on the protection branch; one end of the protection branch is connected to one end, close to the antenna, of the first branch, and the other end of the protection branch is grounded.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a mobile terminal provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of an antenna provided in an embodiment of the present application;

fig. 3 is a schematic circuit connection diagram of a tuning circuit provided in an embodiment of the present application.

Icon: 10-a mobile terminal; 100-a body; 110-top; 120-mounting the side edges; 130-bottom; 200-an antenna assembly; 210-an antenna; 211-short circuit branch; 212-ground point; 213-feed branch; 214-a feeding point; 215-open circuit branch; 220-a main board; 230-platelets; 240-FPC board; 250-cable connecting line; 260-a tuning circuit; 261-first branch; 262-a second branch; 263-third branch; 264-fourth branch; 300-protection branch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The embodiment of the present application provides a mobile terminal 10, where the mobile terminal 10 may be used to receive or transmit a signal, and the mobile terminal 10 may be a mobile phone, a tablet computer, or other communication devices. In the embodiments of the present application, the mobile terminal 10 is taken as an example of a mobile phone.

In the prior art, full-screen cell phones have narrower top and tail regions and borders. Under the condition that the size of the whole mobile phone is not changed, the frame of the mobile phone screen is reduced, the length-width ratio is increased, the screen occupation ratio is increased, and a user can have the use experience of a larger screen. Among them, the mobile phone is provided with an antenna, which is a device for receiving and transmitting signals (electromagnetic waves) and is the most critical part of wireless communication. Although the physical construction of the antenna is simple, the design and construction of the antenna is complex, and many factors need to be considered in relation to various aspects of the internal environment of the handset. The current cell-phone low frequency antenna is generally all at cell-phone top or bottom, and there are multiple devices such as earphone seat and USB, loudspeaker, light sense, MIC in top and bottom for near environment of antenna is complicated, and along with cell-phone screen accounts for the increase simultaneously, the attenuation of cell-phone thickness, the antenna headroom reduces, and the design degree of difficulty of antenna also is constantly increasing.

Referring to fig. 1, the present application provides a mobile terminal. The mobile terminal includes a main body 100 and an antenna assembly 200. The antenna assembly 200 is disposed inside the main body 100, and the antenna assembly 200 is used to receive or transmit signals. The main body 100 has a top 110 and a mounting side 120 disposed adjacently; it should be noted that, in the case of taking a mobile phone as an example, when a user uses the mobile phone normally, the display screen of the mobile phone is taken as the front surface, and the top 110 of the display screen of the mobile phone can be regarded as the top 110 of the main body 100; on the other hand, one of the two sides of the mobile phone is the mounting side 120. In an embodiment of the present application, the antenna assembly 200 is disposed at the mounting side 120 of the body 100.

It should be noted that, because fewer parts are mounted on the mounting side 120 of the main body 100, the space left for the antenna assembly 200 is larger, so that the mounting of the antenna assembly 200 can be facilitated, and therefore, the clearance area of the antenna 210 can be increased, and the problem of the prior art that the mounting of the antenna 210 is complicated due to the reduction of the mounting space can be solved.

In some embodiments of the present application, antenna assembly 200 includes a motherboard 220, a platelet 230, a tuning circuit 260, and an antenna 210. The main board 220, the small board 230, the tuning circuit 260, and the antenna 210 are disposed inside the main body 100. The main plate 220 is disposed at the top 110 of the main body 100; since the coverage area of the main board 220 is large, the main board 220 can be regarded as being disposed near the mounting side 120. The small board 230 is disposed on the mounting side 120 and electrically connected to the main board 220. The antenna 210 is connected to the small plate 230 at the mounting side 120. The tuning circuit 260 is disposed on the small board 230, and is electrically connected to the antenna 210, and the tuning circuit 26 is configured to switch a transceiving frequency band of the antenna 210.

The antenna 210 is disposed on the mounting side 120, and since the number of other components disposed on the mounting side 120 is small, the area available for mounting the antenna 210 is large, thereby facilitating the mounting of the antenna 210. Moreover, after the antenna 210 is installed, the clearance area of the antenna 210 can be increased, which facilitates the transceiving of signals by the antenna 210. As described above, the antenna 210 can be mounted on the mounting side 120, so as to solve the problem of the prior art that the mounting space of the antenna 210 is reduced, which results in the complicated mounting of the antenna 210.

Optionally, the antenna assembly 200 further comprises an FPC board 240, the FPC board 240 being provided inside the main body 100 for supplying power to said small board, and the FPC board 240 being interposed between the main board 220 and the small board 230; in other words, the main board 220 is connected to the small board 230 through the FPC board 240. That is, by the arrangement of the FPC board 240, the main board 220 can be electrically connected to the small board 230, thereby facilitating the main board 220 to supply power to the small board 230. It should be understood that in other embodiments, the motherboard 220 may provide power to the platelet 230 in other manners, such as by directly connecting the platelet 230 to the motherboard 220, such that the circuitry on the platelet 230 is directly electrically connected to the power supply on the motherboard 220.

It should be noted that, in order to facilitate the arrangement of the antenna assembly 200, the FPC board 240 is also arranged on the mounting side 120, so that the antenna assembly 200 can be integrally located on the mounting side 120, the arrangement of the antenna assembly 200 is facilitated, and the difficulty in mounting the antenna assembly 200 is reduced.

In addition, in some embodiments of the present application, the antenna assembly 200 may further include a cable connection line 250, two ends of the cable connection line 250 are respectively connected to the main board 220 and the small board 230, and the cable connection line 250 is used for conducting data between the main board 220 and the small board 230, so that the efficiency of data conduction between the main board 220 and the small board 230 may be improved through the arrangement of the cable connection line 250.

Optionally, in some embodiments of the present application, the antenna 210 employs an IFA antenna. The Antenna 210 may be in an fpc (flexible Printed circuit) form or an MDA (micro-Dielectric Antenna) form.

Referring to fig. 1 and 2, in order to facilitate the arrangement of the antenna 210, the antenna assembly 200 further includes a spring. The elastic sheet is disposed on the small plate 230, and the elastic sheet is connected with the main board 220. The antenna 210 has a feed point 214 and a ground point 212; the feeding point 214 is connected with the main board 220 through a spring sheet; the ground point 212 is connected to the small plate 230 through a spring. The number of the elastic pieces may be one, the elastic pieces are connected to the main board 220 and the small board 230 at the same time, and the feeding point 214 and the grounding point 212 of the antenna 210 are connected to the main board 220 and the small board 230 through the elastic pieces respectively; of course, the number of the elastic pieces may also be two, the feeding point 214 of the antenna 210 is connected to the main board 220 through one of the elastic pieces, and the grounding point 212 of the antenna 210 is connected to the small board 230 through the other elastic piece.

In some embodiments of the present application, antenna 210 includes an open stub 215, a short stub 211, and a feed stub 213. One end of the short stub 211, one end of the open stub 215, and one end of the feed stub 213 are electrically connected, and the antenna 210 is made to have an F-shape. Note that, the short-circuit branch 211 is substantially L-shaped, the open-circuit branch 215 and the feed branch 213 are perpendicular to each other, and the feed branch 213 is located between the short-circuit branch 211 and the open-circuit branch 215. Of course, the short-circuit branch 211, the feed branch 213 and the open-circuit branch 215 may be formed by integral molding. In addition, the other end of the short-circuit branch 211 forms the grounding point 212, in other words, the other end of the short-circuit branch 211 is connected to the small plate 230, and the antenna 210 is grounded. The other end of the feeding branch 213 forms a feeding point 214, in other words, the other end of the feeding branch 213 is electrically connected to the main board 220 through the elastic sheet. The other end of the open stub 215 extends toward the bottom 130 of the body 100, wherein the bottom 130 of the body 100 is the end of the body 100 away from the top 110.

Optionally, referring to fig. 3, the tuning circuit 260 may include a first branch 261 and a second branch 262. The first branch 261 is provided with a first capacitor, an adjustable capacitor and an inductor branch which are connected in parallel. The inductor branch is provided with an inductor and a first switch which are mutually connected in series. One end of the first branch 261 is connected to the antenna 210, and the other end is connected to the power amplifier. A second capacitor and a second switch which are connected in series are arranged on the second branch 262, one end of the second branch 262 is connected to one end of the first branch 261 close to the power amplifier, and the other end of the second branch 262 is grounded. Wherein PA in fig. 3 denotes a power amplifier.

The tuning circuit 260 may be connected to a controller (not shown), and the controller is configured to control the first switch and the second switch to be opened or closed. The controller controls the first switch and the second switch to open and close, so that the tuning circuit 260 can be controlled to switch the receiving and transmitting frequency bands of the antenna 210.

Optionally, in some embodiments of the present application, the value of the inductance may be 10nH, and in a case that the controller controls the first switch to be closed, the tuning circuit 260 may switch the frequency band transceived by the antenna 210 to 610MHz-700 MHz.

Optionally, in some embodiments of the present application, a value of the second capacitor may be 100pF, and in a case that the controller controls the second switch to be closed, the tuning circuit 260 may switch a frequency band transceived by the antenna 210 to 730MHz-750 MHz.

In addition, in some embodiments of the present application, a third switch may be further disposed on the second branch 262, and the third switch is disposed in parallel with the second capacitor. The second branch 262 may be directly grounded by closing the third switch, thereby short-circuiting the second branch 262 to protect the electric appliances at the back end of the power amplifier.

In other embodiments of the present application, the tuning circuit 260 may further include a third branch 263 and a fourth branch 264. One end of the third branch 263 is connected to one end of the first branch 261 close to the antenna 210, and the other end is grounded; a fourth switch is disposed on the third branch 263, and the fourth switch is configured to turn on or off the third branch 263. One end of the fourth branch 264 is connected to one end of the first branch 261 close to the antenna 210, and the other end is grounded; a fifth switch is disposed on the fourth branch 264, and the fifth switch is configured to turn on or off the fourth branch 264. And the third and fourth legs 263 and 264 are arranged in parallel.

It should be noted that in alternative embodiments of the present application, the tuning circuit 260 may be replaced with other antenna tuning switches, such as a switch of type QAT3550 or a switch of type QAT 3518.

In addition, in order to improve the safety of the tuning circuit 260, the antenna assembly 200 may further include a protection branch 300, and a transient diode is disposed on the protection branch 300. One end of the protection branch 300 is connected to one end of the first branch 261 near the antenna 210, and the other end is grounded.

In summary, in the mobile terminal 10 provided in the embodiment of the present application, the small plate 230 and the antenna 210 in the antenna assembly 200 are disposed on the mounting side 120 of the main body 100, and since there are fewer other components at the mounting side 120 relative to other components at the top 110 and the bottom 130 of the main body 100, an area available for mounting the antenna 210 at the mounting side 120 is larger, so as to avoid a problem that the mounting space of the antenna 210 is reduced, which results in a complicated mounting of the antenna 210, in other words, by mounting the antenna assembly 200 to the mounting side 120, the problem that the mounting space of the antenna 210 is reduced and the antenna 210 is installed in a complicated manner in the prior art can be improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A mobile terminal comprising a body and an antenna assembly;

the main body is provided with a top and a mounting side which are adjacently arranged;

the antenna assembly comprises a main board, a small board, a tuning circuit and an antenna which are arranged inside the main body;

the main board is arranged at the top, the small board is arranged at the mounting side edge, and the small board is electrically connected with the main board; the antenna is connected with the small plate and is positioned on the mounting side edge; the tuning circuit is arranged on the small plate and electrically connected with the antenna, and the tuning circuit is used for switching the receiving and transmitting frequency band of the antenna.

2. A mobile terminal according to claim 1, wherein the antenna assembly further comprises an FPC board disposed inside the body for supplying power to the small board; the main board is connected with the small board through the FPC board.

3. The mobile terminal according to claim 1, wherein the antenna assembly further comprises a cable connection line, and two ends of the cable connection line are respectively connected with the main board and the small board.

4. The mobile terminal of claim 1, wherein the antenna is an IFA antenna.

5. The mobile terminal of claim 4, wherein the antenna assembly further comprises a spring, the spring being disposed on the small board and connected to the main board; the antenna has a feed point and a ground point; the feed point is connected with the mainboard through the elastic sheet; the grounding point is connected with the small plate through the elastic sheet.

6. The mobile terminal of claim 5, wherein the antenna comprises an open-circuit stub, a short-circuit stub, and a feed stub;

one end of the short-circuit branch, one end of the open-circuit branch and one end of the feed branch are electrically connected, and the antenna is made to be F-shaped;

the other end of the short circuit branch forms the grounding point; the other end of the feeding branch forms the feeding point.

7. The mobile terminal of claim 1, wherein the tuning circuit comprises a first branch and a second branch;

the first branch is provided with a first capacitor, an adjustable capacitor and an inductance branch which are mutually connected in parallel, and the inductance branch is provided with an inductor and a first switch in series; one end of the first branch is connected to the antenna, and the other end of the first branch is connected to the power amplifier;

a second capacitor and a second switch which are mutually connected in series are arranged on the second branch circuit; and one end of the second branch is connected to one end of the first branch close to the power amplifier, and the other end of the second branch is grounded.

8. The mobile terminal of claim 7, wherein the inductance has a value of 10 nH.

9. The mobile terminal of claim 7, wherein the second capacitance has a value of 100 pF.

10. The mobile terminal of claim 7, wherein the antenna assembly further comprises a protection branch having a transient diode disposed thereon; one end of the protection branch is connected to one end, close to the antenna, of the first branch, and the other end of the protection branch is grounded.

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