Folding screen metal frame antenna and mobile terminal

Abstract

The utility model provides a folding screen metal frame antenna and a mobile terminal, the folding screen metal frame antenna is applied to a folding mobile phone, the folding mobile phone comprises a first screen and a second screen, and the first screen and the second screen are connected through a rotating shaft; the folding screen metal frame antenna comprises a main antenna, a first diversity antenna and a second diversity antenna, the main antenna is located at the top of the metal frame of the first screen, the first diversity antenna is located at the top of the metal frame of the second screen, the second diversity antenna is located on the rotating shaft, and the rotating shaft is provided with electrically connected feeding points. The two ends of the rotating shaft are provided with grounding points which are electrically connected. The folding screen metal frame antenna not only can optimize the isolation between the main set antenna and the diversity antenna, but also can avoid the problem that the overall efficiency of the antenna is reduced due to frequency deviation after the antenna is folded.

Description

Technical Field

[0001] The utility model relates to the field of communication technology, and in particular to a folding screen metal frame antenna and a mobile terminal. Background Art

[0002] With the expansion of mobile phone and other product lines, the diverse form factors of foldable screen phones have led to increasingly complex antenna designs. Conventional candy-bar phones have their main and diversity antennas located at the top and bottom, with other antenna types on either side. For example, when folding, the main and diversity antennas are extremely close together. This leads to mutual coupling between the antennas, significantly degrading antenna efficiency and frequency deviation and isolation.

[0003] In view of this, it is necessary for the present invention to propose a folding screen metal frame antenna and a mobile terminal using the folding screen metal frame antenna. Utility Model Content

[0004] The purpose of the present utility model is to provide a folding screen metal frame antenna, which can not only optimize the isolation between the main antenna and the diversity antenna, but also avoid the problem of reduced overall antenna efficiency caused by frequency offset after the antenna is folded.

[0005] In order to solve the above technical problems, the present invention provides a folding screen metal frame antenna, which is applied to a folding mobile terminal, wherein the folding mobile terminal includes a first screen and a second screen, and the first screen and the second screen are connected by a rotating shaft; the folding screen metal frame antenna includes a main antenna, a first diversity antenna and a second diversity antenna, the main antenna is located at the top of the metal frame of the first screen, the first diversity antenna is located at the top of the metal frame of the second screen, and the second diversity antenna is located at the rotating shaft, and an electrically connected feeding point is provided on the rotating shaft, and electrically connected grounding points are provided at both ends of the rotating shaft.

[0006] As a further improvement of the present invention, the rotating shaft is configured as a metal rotating shaft, and the metal rotating shaft is configured as the second diversity antenna body.

[0007] As a further improvement of the present invention, the feeding point is configured as a retractable mainboard spring clip. When the first screen and the second screen are unfolded, the mainboard spring clip is disconnected from the second diversity antenna body; when the first screen and the second screen are folded, the mainboard spring clip is contacted and connected with the second diversity antenna body.

[0008] As a further improvement of the present invention, the mainboard spring is located between the metal shafts, and the feeding point divides the metal shafts into a first branch and a second branch.

[0009] As a further improvement of the present invention, the length ratio of the first branch to the second branch is 2:1.

[0010] As a further improvement of the present invention, the first screen and the second screen are folded, and a clear space area is formed between the rotating shaft and the first screen and the second screen.

[0011] As a further improvement of the present invention, the clear space area is located between the metal shaft and the first screen and / or the second screen.

[0012] As a further improvement of the present invention, the control frequency band of the second diversity antenna is in the range of 1200MHz to 2700MHz or 3300MHz to 4200MHz.

[0013] As a further improvement of the present invention, the folding screen metal frame antenna also includes a return point, which is located at both ends of the metal shaft and next to the mainboard spring to form a high-frequency band of 3300MHz to 4200MHz.

[0014] The purpose of the present utility model is to provide a mobile terminal to better apply the above-mentioned folding screen metal frame antenna.

[0015] In order to solve the above technical problems, the present invention provides a mobile terminal, which includes the aforementioned folding screen metal frame antenna.

[0016] The present invention provides a folding screen metal frame antenna and a mobile terminal, which are applied to a folding mobile terminal. The folding mobile terminal includes a first screen and a second screen, and the first screen and the second screen are connected by a hinge. The folding screen metal frame antenna includes a main antenna, a first diversity antenna, and a second diversity antenna. The main antenna is located at the top of the metal frame of the first screen, the first diversity antenna is located at the top of the metal frame of the second screen, and the second diversity antenna is located on the hinge. An electrically connected feeding point is provided on the hinge, and electrically connected grounding points are provided at both ends of the hinge. The folding screen metal frame antenna of the present invention can not only optimize the isolation between the main and diversity antennas, but also avoid the problem of reduced overall antenna efficiency caused by frequency offset after the antenna is folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the mobile terminal of the present invention when folded.

[0018] Figure 2 This is a structural diagram of the mobile terminal of the present invention when it is unfolded.

[0019] Figure 3This is a schematic diagram of the structure of the folding screen metal frame antenna of the present invention.

[0020] Figure 4 This is an S11 simulation comparison diagram of the folding screen metal frame antenna of the utility model and the traditional antenna design.

[0021] Figure 5 This is a simulation diagram of the antenna efficiency of the folding screen metal frame antenna of the present invention.

[0022] The descriptions of the reference numerals are as follows:

[0023] First screen 10 , second screen 20 , rotating shaft 30 , main antenna 40 , first diversity antenna 50 , second diversity antenna 60 , feeding point / mainboard spring clip 70 , grounding point 80 , return point 81 , and clear space area 90 . DETAILED DESCRIPTION

[0024] The following is a further detailed description of the folding screen metal frame antenna proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the drawings is often part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different proportions are used.

[0025] like Figure 1-Figure 3 As shown, the utility model provides a folding screen metal frame antenna, which is applied to a folding mobile terminal, the folding mobile terminal includes a first screen 10 and a second screen 20, and the first screen 10 and the second screen 20 are connected by a rotating shaft 30; the folding screen metal frame antenna includes a main antenna 40, a first diversity antenna 50 and a second diversity antenna 60, the main antenna 40 is located at the top of the metal frame of the first screen 10, the first diversity antenna 50 is located at the top of the metal frame of the second screen 20, and the second diversity antenna 60 is located at the rotating shaft 30, and an electrically connected feeding point 70 is provided on the rotating shaft 30, and an electrically connected grounding point 80 is provided at both ends of the rotating shaft 30.

[0026] With such a configuration, the folding screen metal frame antenna of the present invention can not only optimize the isolation between the main antenna and the diversity antenna, but also avoid the problem of reduced overall antenna efficiency caused by frequency offset after the antenna is folded.

[0027] Furthermore, the rotating shaft 30 is configured as a metal rotating shaft 30 , and the metal rotating shaft 30 is configured as the body of the second diversity antenna 60 .

[0028] The feed point 70 is configured as a retractable mainboard spring clip 70. When the first screen 10 and the second screen 20 are unfolded, the mainboard spring clip 70 is disconnected from the main body of the second diversity antenna 60. When the first screen 10 and the second screen 20 are folded, the mainboard spring clip 70 is in contact with the main body of the second diversity antenna 60. In other words, the mainboard spring clip 70 is designed as a retractable spring clip. When a foldable mobile terminal such as a mobile phone is unfolded, the mainboard spring clip 70 on the metal hinge 30 is not in contact with or disconnected from the antenna body, i.e., the second diversity antenna 60, and the diversity radio or MIMO circuit remains in a normal state, thereby allowing the first diversity antenna 50 or the MIMO antenna to function normally. When the mobile phone or foldable mobile terminal is folded, the diversity or MIMO radio frequency circuit switches to the metal hinge 30 antenna and the second diversity antenna 60. At this time, the first diversity antenna 50 is inoperative. At this time, the mainboard spring clip 70 contacts the metal hinge 30, i.e., the main body of the second diversity antenna 60, generating resonance to realize the diversity or MIMO antenna function.

[0029] The mainboard spring clip 70 is located between the metal shafts 30, and the feed point 70 divides the metal shaft 30 into a first branch and a second branch. The length ratio of the first branch and the second branch is 2:1. The first screen 10 and the second screen 20 are folded, and a clear space area 90 is formed between the shaft 30 and the first screen 10 and the second screen 20. The clear space area 90 is located between the metal shaft 30 and the first screen 10 and / or the second screen 20. The control frequency band range of the second diversity antenna 60 is 1200MHz to 2700MHz or 3300MHz to 4200MHz. The folding screen metal frame antenna also includes a return point 81, which is located at both ends of the metal shaft 30 and next to the mainboard spring clip 70 to form a high-frequency band of 3300MHz to 4200MHz.

[0030] like Figure 4 The figure shows a comparison of the S11 of the folded metal frame antenna of the present invention and a traditional antenna. The blue line S11 in the figure represents the traditional original main antenna 40, while the red line S11 represents the folded metal frame antenna of the present invention. As can be seen, because the antenna is made of metal, the clearance area of ​​the antenna changes when it is used by a mobile terminal such as a mobile phone, that is, the clearance area of ​​the antenna increases. Furthermore, because antennas in the same frequency band are close to each other, antennas generally couple, resulting in frequency deviation and clutter. Therefore, the overall antenna performance of the folded metal frame antenna of the present invention is better than that of traditional antennas.

[0031] like Figure 5The figure shows the antenna efficiency diagram of the folding metal frame antenna of the present invention. After multiple simulation experiments, it is shown that the efficiency simulation diagram of the folding metal frame antenna of the present invention is better than that of the traditional antenna.

[0032] The present invention may further include return points 81 , which are located at both ends of the metal shaft 30 and beside the mainboard shrapnel 70 to form a high-frequency band of 3300MHz to 4200MHz, that is, an antenna that can take into account GPS / WIFI / UHF.

[0033] In summary, the present invention provides a folding screen metal frame antenna and a mobile terminal, which are applied to a folding mobile terminal. The folding mobile terminal includes a first screen 10 and a second screen 20, and the first screen 10 and the second screen 20 are connected by a hinge 30; the folding screen metal frame antenna includes a main antenna 40, a first diversity antenna 50 and a second diversity antenna 60, the main antenna 40 is located at the top of the metal frame of the first screen 10, the first diversity antenna 50 is located at the top of the metal frame of the second screen 20, and the second diversity antenna 60 is located at the hinge 30. An electrically connected feeding point 70 is provided on the hinge 30, and electrically connected grounding points 80 are provided at both ends of the hinge 30. The folding screen metal frame antenna of the present invention can not only optimize the isolation between the main diversity antenna and the diversity antenna, but also avoid the problem of reduced overall antenna efficiency due to frequency offset after the antenna is folded.

[0034] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In addition, the different parts between the various embodiments can also be used in combination with each other, and this utility model does not limit this.

[0035] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A foldable screen metal frame antenna, applied to a foldable mobile terminal, the foldable mobile terminal comprising a first screen and a second screen, the first screen and the second screen being connected by a hinge; characterized in that: The folding screen metal frame antenna includes a main antenna, a first diversity antenna and a second diversity antenna. The main antenna is located at the top of the metal frame of the first screen, the first diversity antenna is located at the top of the metal frame of the second screen, and the second diversity antenna is located at the rotating shaft. An electrically connected feeding point is provided on the rotating shaft, and electrically connected grounding points are provided at both ends of the rotating shaft.

2. The folding screen metal frame antenna according to claim 1, characterized in that: The rotating shaft is configured as a metal rotating shaft, and the metal rotating shaft is configured as the second diversity antenna body.

3. The folding screen metal frame antenna according to claim 2, characterized in that: The feeding point is configured as a retractable mainboard spring clip. When the first screen and the second screen are unfolded, the mainboard spring clip is disconnected from the second diversity antenna body; when the first screen and the second screen are folded, the mainboard spring clip is in contact with the second diversity antenna body.

4. The folding screen metal frame antenna according to claim 3, characterized in that: The mainboard spring is located between the metal shafts, and the feeding point divides the metal shafts into a first branch and a second branch.

5. The folding screen metal frame antenna according to claim 4, characterized in that: The length ratio of the first branch to the second branch is 2:

1.

6. The folding screen metal frame antenna according to claim 5, characterized in that: The first screen and the second screen are folded, and a clear space area is formed between the rotating shaft and the first screen and the second screen.

7. The folding screen metal frame antenna according to claim 6, characterized in that: The clear space area is located between the metal rotating shaft and the first screen and / or the second screen.

8. The folding screen metal frame antenna according to claim 7, characterized in that: The control frequency band of the second diversity antenna is in the range of 1200MHz to 2700MHz or 3300MHz to 4200MHz.

9. The folding screen metal frame antenna according to claim 8, characterized in that: The folding screen metal frame antenna also includes a return point, which is located at both ends of the metal shaft and next to the mainboard spring to form a high-frequency band of 3300MHz to 4200MHz.

10. A mobile terminal, characterized in that: The mobile terminal includes the folding screen metal frame antenna described in any one of claims 1-9.

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