CN110943289A

CN110943289A - Antenna and mobile terminal

Info

Publication number: CN110943289A
Application number: CN201911260897.0A
Authority: CN
Inventors: 陈卫; 白松; 马验宗
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-03-31
Anticipated expiration: 2039-12-10
Also published as: CN110943289B

Abstract

The application provides an antenna, which comprises a feed point, a place, a parasitic point, a first routing line, a second routing line and a third routing line, wherein the feed point is positioned between the place and the parasitic point; the first routing comprises a first branch and a second branch, one end of the first branch is connected with the feed point, one end of the second branch is connected with the first branch, and the other end of the first branch and the other end of the second branch extend towards two sides respectively at the connecting position; the second routing and the third routing are connected with the feed point, the second routing is located in an area surrounded by the first branch and the third routing, and gaps exist among the second routing, the third routing and the first branch. The antenna for realizing the performance of the medium-frequency and high-frequency antennas is designed in the middle of the antenna, so that the tail ends of the medium-frequency and high-frequency wires are arranged in the middle of the mobile terminal, and the attenuation of the high-frequency performance of the antenna caused by holding the mobile terminal by hands is avoided to the greatest extent.

Description

Antenna and mobile terminal

Technical Field

The application relates to the technical field of communication, in particular to an antenna and a mobile terminal.

Background

Radio devices such as communications, radar, navigation, radio, television, etc. all communicate information via radio waves, and require the radiation and reception of radio waves. In a radio device, a device for radiating and receiving radio waves is called an antenna.

With the development of communication technology, more and more communication frequency bands can be supported by the mobile terminal, and the bandwidth that the antenna needs to support is larger and larger. Communication frequency bands that can be supported by the mobile terminal may be divided into low, intermediate, and high frequencies. Wherein, signals of low frequency, intermediate frequency and high frequency need corresponding antennas to realize receiving and transmitting functions. In the design of a conventional antenna, a medium-high frequency signal is generally received and transmitted through a parasitic trace, but since the parasitic trace is generally disposed on one side of the overall trace, when a user holds the mobile terminal, the parasitic trace is often shielded, resulting in a reduction in high-frequency performance of the antenna.

Disclosure of Invention

The application provides an antenna and a mobile terminal, aiming at solving the technical problem that the high-frequency performance of the antenna is affected when a user holds the terminal in the existing antenna design.

The technical scheme provided by the application is as follows:

the application provides an antenna, which comprises a feed point, a place, a parasitic point, a first routing line, a second routing line and a third routing line, wherein the feed point is positioned between the place and the parasitic point;

the first routing comprises a first branch and a second branch, one end of the first branch is connected with the feed point, one end of the second branch is connected with the first branch, and at the connecting position, the other end of the first branch and the other end of the second branch extend towards two sides respectively;

the second wire and the third wire are both connected with the feed point, the second wire is located in an area surrounded by the first branch and the third wire, and gaps exist among the second wire, the third wire and the first branch.

In the antenna of the present application, the length of the third trace is smaller than the length of the second trace.

In the antenna of the present application, a difference between the lengths of the second trace and the third trace is 10-15 mm.

In the antenna of the present application, the width of the second trace is 2-3 mm.

In the antenna of the present application, the width of the third trace is 5-6 mm.

In the antenna of this application, the antenna still includes the cubic is walked the line, the cubic walk the line with the feed point is connected, the second walk the line with the third is walked the line through the cubic walk the line with the feed point is connected.

In the antenna of the present application, a gap length between the first branch and the second antenna is greater than a gap length between the second trace and the third trace.

In the antenna of the present application, the gap end between the first branch and the second antenna extends to directly below the parasitic point.

The application also provides a mobile terminal, which comprises an antenna bracket and the antenna of any one of the above items, wherein the antenna is installed on the antenna bracket.

In the mobile terminal of this application, antenna boom includes the top surface and centers on terminal surface and the side that the top surface set up all around, wherein, the feed point the place with parasitic point is located on the top surface, first branch extends to the terminal surface, the second branch by the terminal surface extends to the side, the third is walked the line and is extended to the terminal surface.

The beneficial effect of this application does: different from the prior art, the antenna provided by the application comprises a feed point, a place, a parasitic point, a first routing line, a second routing line and a third routing line, wherein the feed point is located between the place and the parasitic point; the first routing comprises a first branch and a second branch, one end of the first branch is connected with the feed point, one end of the second branch is connected with the first branch, and the other end of the first branch and the other end of the second branch extend towards two sides respectively at the connecting position; the second routing and the third routing are connected with the feed point, the second routing is located in an area surrounded by the first branch and the third routing, and gaps exist among the second routing, the third routing and the first branch. The antenna for realizing the performance of the medium-frequency and high-frequency antennas is designed in the middle of the antenna, so that the tail ends of the medium-frequency and high-frequency wires are arranged in the middle of the mobile terminal, and the attenuation of the high-frequency performance of the antenna caused by holding the mobile terminal by hands is avoided to the greatest extent.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

Detailed Description

The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.

It should be noted that the thicknesses and shapes in the drawings of the present application do not reflect actual proportions, but are merely intended to schematically illustrate the contents of the embodiments of the present application.

With the development of communication technology, more and more communication frequency bands can be supported by the mobile terminal, and the bandwidth that the antenna needs to support is larger and larger. Communication frequency bands that can be supported by the mobile terminal may be divided into low, intermediate, and high frequencies. Wherein, signals of low frequency, intermediate frequency and high frequency need corresponding antennas to realize receiving and transmitting functions. In the design of a conventional antenna, a medium-high frequency signal is generally received and transmitted through a parasitic trace, but since the parasitic trace is generally disposed on one side of the overall trace, when a user holds the mobile terminal, the parasitic trace is often shielded, resulting in a reduction in high-frequency performance of the antenna. In order to solve the above problems, the present application provides an antenna to reduce the influence of a human hand holding on the middle and high frequency performance in the existing antenna design.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present application. As shown in fig. 1, the antenna 10 includes a feed point 11, a ground point 12, a parasitic point 13, a first trace 14, a second trace 15, and a third trace 16, wherein the feed point 11 is located between the ground point 12 and the parasitic point 13. Further, the first trace 14 includes a first branch 141 and a second branch 142, wherein one end of the first branch 141 is connected to the feed point 11, one end of the second branch 142 is connected to the first branch 141, and at the connection position, the other end of the first branch 141 and the other end of the second branch 142 extend towards two sides, respectively. The second trace 15 and the third trace 16 are also connected to the feed point 11, and the second trace 15 is located in an area surrounded by the first branch 141 and the third trace 16, wherein a gap exists between the second trace 15, the third trace 16 and the first branch 141, specifically, the traces located at two sides of the gap can generate a coupling effect, which is beneficial to improving the performance of the two.

The feed point 11, i.e. the point connecting the antenna 10 and the feed line (not shown), and the point 12, i.e. the point connecting the antenna 10 and the ground line (not shown), are illustrated as circular holes in fig. 1.

In this embodiment, the length of the third trace 16 is smaller than the length of the second trace 15.

Preferably, the second tracks 15 differ from the third tracks 16 by approximately 10-15mm in length.

In some embodiments, the length of the second trace 15 is approximately 20-30mm, and the length of the third trace 16 is approximately 10-15mm, in this embodiment, the length of the second trace 15 is preferably 25mm, and the length of the third trace 16 is preferably 13 mm. In practical use cases, the length of the antenna, including the connection position, can be adjusted, and can also be adjusted according to the overall design of the antenna.

Specifically, the second trace 15 and the third trace 16 need to be adjacent and have different lengths in order to achieve the antenna performance in different frequency ranges of the intermediate frequency (1700-2200 Mhz). Further, the antenna performance of the low frequency (600 + 960Mhz) band is realized by the portion of the first branch 141 from the feeding point to the connection position and the second branch 142, and the antenna performance of the high frequency (2300 + 2700Mhz) band is realized by the portion of the first branch 141 from the connection position with the second branch 152 to the other end of the first branch 141 and the gap between the first branch 141 and the second trace 15 and the third trace 16, and it should be noted that the length of the antenna is about 1/4 of the wavelength of the electromagnetic wave, so the lower the frequency, the longer the length of the antenna.

In some embodiments, the width of the second tracks 15 is approximately 2-3 mm.

In the present embodiment, the width of the second trace 15 is preferably 2 mm.

In some embodiments, the width of the third trace 16 is approximately 5-6 mm.

In the present embodiment, the width of the third trace 16 is preferably 6 mm.

In this embodiment, the antenna further comprises a block trace 17, the block trace 17 is connected to the feed point 11, and the second trace 15 and the third trace 16 are connected to the feed point 11 through the block trace 17.

In the present embodiment, the gap length between the first branch 141 and the second trace 15 is greater than the gap length between the second trace 15 and the third trace 16.

In some embodiments, the gap between the first branch 141 and the second trace 15 has a length of about 20-25mm and a width of about 1-1.5mm, and the gap between the second trace 15 and the third trace 16 has a length of about 12-15mm and a width of about 0.7-1mm, as the specific length and width are determined.

In the present embodiment, the end of the gap between the first branch 141 and the second antenna 15 extends to directly below the parasitic point 13.

In the present embodiment, the antenna 10 may be an LDS antenna or an FPC antenna.

Among them, the FPC (Flexible Printed Circuit) antenna is suitable for almost all small electronic products, can be used as a complicated antenna of more than ten frequency bands such as 4G, and has good performance and low cost. The LDS antenna technology is a Laser-Direct-structuring technology (Laser-Direct-structuring), which uses a computer to control the movement of Laser according to the trace of a conductive pattern, so as to project the Laser onto a molded three-dimensional plastic device, and activate a circuit pattern within a few seconds. For the design and production of the mobile phone antenna, the metal antenna pattern is directly formed on the formed plastic support by chemical plating by using a laser technology, so that the antenna can be directly laser on the mobile phone shell, the antenna has the advantages of being more stable, avoiding the interference of internal components, saving more design space and enabling the mobile phone to be thinner.

The antenna 10 may be installed in a mobile terminal such as a mobile phone or a computer, and the overall size of the antenna 10, the distance of internal routing, and other designs may be adjusted according to actual situations. The antenna is mounted in two ways, one is mounted on a separate bracket, and the other is mounted on the rear shell.

It should be understood that the antenna 10 in the embodiment of the present application may be applied to various communication systems, for example: global System for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, LTE-Advanced long term evolution (LTE-a) systems, Universal Mobile Telecommunications System (UMTS) or next generation wireless communication systems, such as New Radio, NR) systems, evolved LTE (LTE ), etc.

In contrast to the prior art, the antenna 10 provided in the present application includes a feed point 11, a location 12, a parasitic point 13, a first trace 14, a second trace 15, and a third trace 16, wherein the feed point 11 is located between the location 12 and the parasitic point 13. Further, the first trace 14 includes a first branch 141 and a second branch 142, wherein one end of the first branch 141 is connected to the feed point 11, one end of the second branch 142 is connected to the first branch 141, and at the connection position, the other end of the first branch 141 and the other end of the second branch 142 extend towards two sides, respectively. The second trace 15 and the third trace 16 are also connected to the feed point 11, and the second trace 15 is located in an area surrounded by the first branch 141 and the third trace 16, wherein a gap exists between the second trace 15, the third trace 16 and the first branch 141. The antenna for realizing the performance of the medium-frequency and high-frequency antennas is designed in the middle of the antenna, so that the tail ends of the medium-frequency and high-frequency wires are arranged in the middle of the mobile terminal, and the attenuation of the high-frequency performance of the antenna caused by holding the mobile terminal by hands is avoided to the greatest extent.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention, and as shown in fig. 2, the mobile terminal 20 includes an antenna support 21 and an antenna 22 according to any one of the foregoing descriptions, where the antenna 22 is mounted on the antenna support 21.

In the present embodiment, the antenna support 21 includes a top surface (not shown), and an end surface (not shown) and a side surface (not shown) disposed around the top surface, wherein the feed point (not shown), the ground point (not shown) and the parasitic point (not shown) are located on the top surface, the first branch (not shown) extends to the end surface, the second branch (not shown) extends from the end surface to the side surface, and the third trace (not shown) extends to the end surface.

In this embodiment, one end of the first branch is connected to the feed point, one end of the second branch is connected to the first branch, and at the connection position, the other end of the first branch and the other end of the second branch extend towards two sides respectively, wherein the other end of the first branch extends to the end face and is approximately 3-5mm away from the end face, and the other end of the second branch extends to the side face through the end face.

In the present embodiment, the second trace (not shown) is located on the top surface of the antenna support 21 and connected to the feed point through the block trace (not shown).

In this embodiment, the length of the third trace is smaller than the length of the second trace.

Preferably, the second trace differs from the third trace by approximately 10-15mm in length, noting that the length of the antenna is approximately 1/4 times the wavelength of the electromagnetic wave, so the lower the frequency, the longer the length of the antenna.

In some embodiments, the length of the second trace is approximately 20-30mm, and the length of the third trace is approximately 10-15mm, in this embodiment, the length of the second trace is preferably 25mm, and the length of the third trace is preferably 13 mm. In practical use cases, the length of the antenna, including the connection position, can be adjusted, and can also be adjusted according to the overall design of the antenna.

In some embodiments, the width of the second trace is approximately 2-3 mm.

In this embodiment, the width of the second trace is preferably 2 mm.

In some embodiments, the third trace has a width of approximately 5-6 mm.

In this embodiment, the width of the third trace is preferably 6 mm.

In this embodiment, the positions of the second trace and the third trace need to be close and have different lengths in order to achieve the antenna performance in different frequency ranges of the intermediate frequency (1700-2200 Mhz). Further, the antenna performance of the low frequency (600-.

In this embodiment, the gap between the first branch and the second trace and the gap between the second trace and the third trace are both located on the top surface of the antenna bracket 21, and specifically, the traces located on both sides of the gap can generate a coupling effect, which is beneficial to improving the performance of the two.

In some embodiments, the gap between the first branch and the second trace is approximately 20-25mm in length and approximately 1-1.5mm in width, and the gap between the second trace and the third trace is approximately 12-15mm in length and approximately 0.7-1mm in width, where the specific length and width are optional.

In this embodiment, the end of the gap between the first branch and the second antenna extends to directly below the parasitic point.

In this embodiment, the end surface of the antenna support 21 includes a connection port (not shown), the connection port may be an earphone hole or a USB (Universal Serial Bus) port, and the connection position of the first branch and the second branch in the antenna 22 is set corresponding to the position of the connection port.

In the present embodiment, one or more connection holes (not shown) are disposed on the top surface of the antenna support 21, and it is understood that the positions and the number of the connection holes may be set according to the requirement of the mobile terminal 20, for example, the antenna support 21 may be connected to other components through 6 connection holes.

In this embodiment, the end surface of the antenna support 21 may include one or more sound outlet holes (not shown), and the positions and the number of the sound outlet holes may be set according to the requirements of the mobile terminal 20.

It is understood that, in some embodiments of the present invention, since the antenna support 21 is in the mobile terminal 20, and the antenna 22 is mounted on the antenna support 21, the antenna 22 may be disposed on a trace on the end surface in an outlet shape corresponding to a device of the mobile terminal 20, such as a USB outlet, a speaker outlet, a microphone outlet, and the like, which is not limited herein.

In the present embodiment, the antenna 22 may be an LDS antenna or an FPC antenna.

It should be understood that the antenna 22 in the embodiment of the present application may be applied to various communication systems, for example: global System for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, LTE-Advanced long term evolution (LTE-a) systems, Universal Mobile Telecommunications System (UMTS) or next generation wireless communication systems, such as New Radio, NR) systems, evolved LTE (LTE ), etc.

Specifically, the size of the antenna bracket 21 depends on the specific usage environment, and is not limited in this application, and is used for fixing and supporting the trace of the antenna 22.

In this embodiment, the mobile terminal 20 further includes a memory (not shown in the figure) for storing application programs and data. The memory stores an application program having executable program code embodied therein. The application programs may constitute various functional modules.

In this embodiment, the mobile terminal 20 further includes a processor (not shown) for executing an application program stored in the memory, thereby performing various functional applications and data processing.

In the present embodiment, the mobile terminal 20 further includes a display unit (not shown in the drawings) for displaying information input to the mobile terminal 20 by the user or information provided to the user and various graphic user interfaces of the mobile terminal 20. These graphical user interfaces may be made up of graphics, text, icons, video, and any combination thereof. The display unit may include a display panel.

The processor is the control center of the mobile terminal 20. The processor connects various parts of the entire mobile terminal 20 using various interfaces and lines, performs various functions of the mobile terminal 20 and processes data by running or executing an application program stored in the memory and calling data stored in the memory, thereby monitoring the mobile terminal 20 as a whole.

In this embodiment, the transfer terminal 20 further includes a housing (not shown) for housing the antenna holder 21, the antenna 22, the memory, the display unit, the processor, and the like.

In some embodiments, the housing may be a metal housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that, the material of the housing in the embodiment of the present application is not limited to this, and other methods may also be adopted, such as a plastic housing, a ceramic housing, or a housing structure in which metal and plastic are matched with each other, specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure.

In addition, the mobile terminal 20 may further include a camera module, a bluetooth module, an input module, a wireless fidelity module, and the like, which are not described herein again.

In the above embodiment, the mobile terminal 20 may be a notebook, a tablet computer, a mobile phone, and the like, which is not limited in this embodiment.

Different from the prior art, the mobile terminal 20 provided in the present application includes an antenna support 21 and an antenna 22 of any one of the above, where the antenna includes a feed point (not shown in the figure), a ground point (not shown in the figure), a parasitic point (not shown in the figure), a first trace (not shown in the figure), a second trace (not shown in the figure), and a third trace (not shown in the figure), where the feed point is located between the ground point and the parasitic point; the first routing comprises a first branch (not shown in the figure) and a second branch (not shown in the figure), one end of the first branch is connected with the feed point, one end of the second branch is connected with the first branch, and at the connecting position, the other end of the first branch and the other end of the second branch extend towards two sides respectively; the second routing and the third routing are connected with the feed point, the second routing is located in an area surrounded by the first branch and the third routing, and gaps exist among the second routing, the third routing and the first branch. The antenna for realizing the performance of the medium-frequency and high-frequency antennas is designed in the middle of the antenna, so that the tail ends of the medium-frequency and high-frequency wires are arranged in the middle of the mobile terminal, and the attenuation of the high-frequency performance of the antenna caused by holding the mobile terminal by hands is avoided to the greatest extent.

In addition to the above embodiments, other embodiments are also possible. All technical solutions formed by using equivalents or equivalent substitutions fall within the protection scope of the claims of the present application.

In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.

Claims

1. An antenna, comprising a feed point, a location, a parasitic point, a first trace, a second trace, and a third trace, wherein the feed point is located between the location and the parasitic point;

2. The antenna of claim 1, wherein the length of the third trace is less than the length of the second trace.

3. The antenna of claim 2, wherein the second trace differs from the third trace by 10-15mm in length.

4. The antenna of claim 1, wherein the width of the second trace is 2-3 mm.

5. The antenna of claim 1, wherein the width of the third trace is 5-6 mm.

6. The antenna of claim 1, further comprising a block trace, the block trace being connected to the feed point, the second trace and the third trace being connected to the feed point via the block trace.

7. The antenna of claim 1, wherein a gap length between the first branch and the second antenna is greater than a gap length between the second trace and the third trace.

8. The antenna of claim 1, wherein the gap between the first branch and the second antenna ends to extend directly below the parasitic point.

9. A mobile terminal, characterized in that the mobile terminal comprises an antenna stand and an antenna according to any of claims 1-8, wherein the antenna is mounted on the antenna stand.

10. The mobile terminal of claim 9, wherein the antenna support comprises a top surface, and an end surface and a side surface disposed around the top surface, wherein the feed point, the ground point, and the parasitic point are located on the top surface, wherein the first branch extends to the end surface, wherein the second branch extends from the end surface to the side surface, and wherein the third trace extends to the end surface.