CN213340714U

CN213340714U - Antenna applied to full-screen mobile terminal and mobile terminal

Info

Publication number: CN213340714U
Application number: CN202022500879.XU
Authority: CN
Inventors: 郁军; 刘黎明; 顾军
Original assignee: Kunshan Haber Radio Electronic Technology Co ltd
Current assignee: Kunshan Haber Radio Electronic Technology Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-06-01
Anticipated expiration: 2030-11-03

Abstract

The application provides an antenna applied to a full-screen mobile terminal and the mobile terminal. The antenna comprises a dielectric substrate and a conducting layer attached to the dielectric substrate, wherein the conducting layer comprises a radiating unit and a parasitic unit, the radiating unit comprises a feed point, a switch point, a middle frequency band for connecting the feed point and the switch point, a low frequency band extending from the outer side of the feed point, a high frequency band extending from the outer side of the switch point and an extending section extending from the switch point and used for resonating with the middle frequency band; the parasitic element includes a parasitic point and a parasitic line, which resonates with the low frequency band. The antenna improves the radiation efficiency of intermediate frequency through the arrangement of the extension section, greatly improves the intermediate frequency bandwidth, and is generally used as an FPC (flexible printed circuit) main antenna of a full-screen mobile phone.

Description

Antenna applied to full-screen mobile terminal and mobile terminal

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to an antenna applied to a full-screen mobile terminal and a mobile terminal having the same.

Background

With the development of mobile terminal technology, people have higher and higher requirements on mobile terminal products, and nowadays, mobile terminals are not only tools, but also have the attribute of ornaments, and the light and slim body can also increase the fashion feeling, so that the mobile terminals become choices of more users. Therefore, manufacturers of large mobile terminals are also increasingly developing technologies, and trying to make mobile terminals thinner. In addition, the screen is also required to be larger, especially the screen proportion requirement is higher and higher, and the concept of a full screen is also provided. Fig. 1 shows an FPC antenna for a conventional full-screen mobile terminal, which includes a dielectric substrate 10 'and a conductive layer attached to the dielectric substrate 10'. The conductive layer includes a radiating element 20 'and a parasitic element 30'. The radiating element comprises a feed point 21 ', a switch point 22 ', a mid-band 23 ' connecting the feed point 21 ' and the switch point 22 ', a low-band 24 ' extending from the outside of the feed point 21 ' and a high-band 25 ' extending from the outside of the switch point 22 ', respectively.

In order to realize a full screen design, the occupation ratio of the mobile phone screen on the whole mobile phone is required to be larger and larger, which also means that the clearance area of the mobile phone antenna is less and less, and the interference of the mobile phone antenna by components such as the mobile phone screen is larger and larger. How to guarantee the performance of the antenna under a very small clearance area is a problem to be solved when designing the antenna.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need for an antenna and a mobile terminal applied to a full-screen mobile terminal, which have improved antenna performance and are suitable for small headroom.

In order to solve the above technical problem, the present application provides an antenna applied to a full-screen mobile terminal, which includes a dielectric substrate and a conductive layer attached to the dielectric substrate, wherein the conductive layer includes a radiation unit and a parasitic unit, the radiation unit includes a feed point, a switch point, a middle frequency band connecting the feed point and the switch point, a low frequency band extending from an outer side of the feed point and a high frequency band extending from an outer side of the switch point, respectively, and an extension section extending from the switch point for resonating with the middle frequency band; the parasitic element includes a parasitic point and a parasitic line, which resonates with the low frequency band.

Wherein, the medium substrate is an FPC substrate.

The parasitic line comprises a parasitic coupling section and a parasitic extension section, the parasitic extension section is connected with the parasitic coupling section and the parasitic point, and the whole parasitic coupling section is arranged in parallel with the low-frequency band.

Wherein, the parasitic extension section is bent or curved.

Wherein the extension section is arranged opposite to the intermediate frequency band.

The extension section is arranged in a strip shape, and the extension section and the parasitic extension section are arranged in parallel.

Wherein, the extension section is arranged in a wave shape, a sawtooth shape, a square wave shape or a zigzag shape.

And the parasitic point, the feed point and the switch point are arranged on the same side.

In order to solve the technical problem, the application further provides a mobile terminal, and the mobile terminal comprises the antenna applied to the full-screen mobile terminal.

The mobile terminal is of a full-screen structure.

Compared with the prior art, the antenna applied to the full-screen mobile terminal improves the medium-frequency radiation efficiency through the arrangement of the extension section, greatly improves the medium-frequency (medium-frequency range of 1710-2170 MHz) bandwidth, and is generally used as the FPC main antenna of the full-screen mobile phone.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a conventional FPC antenna;

fig. 2 is a schematic structural diagram of a preferred embodiment of the antenna applied to the full-screen mobile terminal according to the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

Referring to fig. 2, the present application provides an antenna for a full-screen mobile terminal, which includes a dielectric substrate 10 and a conductive layer 200 attached to the dielectric substrate 10. Preferably, the dielectric substrate 10 is an FPC (Flexible Printed Circuit), the conductive layer 200 is disposed on the front surface of the dielectric substrate 10, and the back adhesive layer is disposed on the back surface of the dielectric substrate 10 for fixing the antenna in the electronic device. The conductive layer 200 includes an ink layer, a nickel copper layer, and a copper layer sequentially stacked and patterned on the front surface of the dielectric substrate 10. The hatched area shown in fig. 2 is a copper layer on the top surface of the conductive layer 200, which functions to transmit and receive signals.

The conductive layer 200 includes the radiating element 20 and the parasitic element 30. The radiating element comprises a feed point 21, a switch point 22, a mid-band 23 connecting the feed point 21 and the switch point 22, a low-band 24 extending from the outside of the feed point 21 and a high-band 25 extending from the outside of the switch point 22, respectively, and an extension 26 extending from the switch point 22 for resonating with the mid-band 23.

The parasitic element 30 includes a parasitic point 31 and a parasitic line 32, and the parasitic line 32 resonates with the low band 24. In this embodiment, the parasitic line 32 includes a parasitic coupling segment 321 and a parasitic extension segment 322, the parasitic extension segment 322 connects the parasitic coupling segment 321 and the parasitic point 31, and the parasitic coupling segment 321 is disposed in parallel with the low frequency band 24 as a whole. The parasitic extension 322 is bent or curved and the shape of the parasitic extension 322 is not limited by the V-shape shown in fig. 2.

In order to enhance the new resonance energy between the extension section 26 and the middle band 23, the extension section 26 is disposed opposite to the middle band 23, preferably, the extension section 26 is disposed in a strip shape, and the extension section 26 is disposed parallel to the parasitic extension section 322, that is, the extension section 26 is parallel to the overall extension direction of the middle band 23. In addition to the strip-shaped arrangement shown in this embodiment, the extension 26 may also be in a wave shape, a zigzag shape, a square wave shape, or a zigzag shape.

In order to meet the use requirement of the small-clearance electronic product, the parasitic point 31, the feed point 21 and the switch point 22 are arranged on the same side.

In addition to the above embodiments, the present application also includes a mobile terminal (electronic device) using the above antenna applied to a full-screen mobile terminal, and the antenna of the above embodiments is designed for a small headroom electronic product, and therefore, preferably, the mobile terminal is of a full-screen structure.

When the electronic product of the embodiment is used in specific application, the radiation frequencies of intermediate frequency B1 and B3 frequency bands are improved by more than 2 dB; the design of the extension 26 can significantly improve the antenna intermediate frequency performance. Wherein, FDD LTE B1 frequency channel: the uplink frequency range is 1920-1980MHz, and the downlink frequency range is 2110-2170 MHz; FDD LTE B3 band: the uplink frequency range is 1710-1785MHz, and the downlink frequency range is 1805-1880 MHz. Please refer to tables 1-2 for comparison of the radiation frequency improvement of B1 and B3.

TABLE 1

TABLE 2

Compared with the prior art, the antenna has the advantages that the radiation efficiency of the intermediate frequency is improved through the arrangement of the extension section, the bandwidth of the intermediate frequency (within the intermediate frequency range of 1710-2170 MHz) is greatly improved, and the antenna is generally used as an FPC (flexible printed circuit) main antenna of a full-screen mobile phone.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An antenna applied to a full-screen mobile terminal is characterized by comprising a dielectric substrate and a conducting layer attached to the dielectric substrate, wherein the conducting layer comprises a radiating unit and a parasitic unit, the radiating unit comprises a feed point, a switch point, a middle frequency band for connecting the feed point and the switch point, a low frequency band extending from the outer side of the feed point, a high frequency band extending from the outer side of the switch point and an extending section extending from the switch point and used for resonating with the middle frequency band; the parasitic element includes a parasitic point and a parasitic line, which resonates with the low frequency band.

2. The antenna of claim 1, wherein the dielectric substrate is an FPC substrate.

3. The antenna of claim 1, wherein the parasitic line includes a parasitic coupling segment and a parasitic extension segment, the parasitic extension segment connecting the parasitic coupling segment and the parasitic point, the parasitic coupling segment being disposed generally parallel to the low frequency band.

4. An antenna according to claim 3, wherein the parasitic extension is bent or curved.

5. The antenna of claim 3, wherein the extension segment is disposed opposite the mid-band.

6. The antenna of claim 5, wherein the extension is disposed in a strip shape, and the extension is disposed parallel to the parasitic extension.

7. The antenna of claim 5, wherein the extension is disposed in a wave shape, a zigzag shape, a square wave shape, or a zigzag shape.

8. The antenna of claim 1, wherein the parasitic point, the feed point, and the switch point are disposed on a same side.

9. A mobile terminal, characterized in that it comprises an antenna according to any of claims 1-8 applied to a full-screen mobile terminal.

10. The mobile terminal of claim 9, wherein the mobile terminal is a full-screen configuration.