WO2024046235A1

WO2024046235A1 - Electronic device

Info

Publication number: WO2024046235A1
Application number: PCT/CN2023/115001
Authority: WO
Inventors: 朱建基; 潘浩生
Original assignee: 维沃移动通信有限公司
Priority date: 2022-08-31
Filing date: 2023-08-25
Publication date: 2024-03-07
Also published as: CN115332794A

Abstract

The present application discloses an electronic device, comprising a first antenna and a second antenna. When a first device body and a second device body of the electronic device are in a folded state, the direction of a first current generated by the first antenna excited by a feed end of the first antenna is a first direction, and the direction of a second current generated by the second antenna excited by a feed end of the second antenna is a second direction, the first direction being opposite to the second direction.

Description

Electronic equipment

cross reference

This application claims priority to a Chinese patent application filed with the China Patent Office on August 31, 2022, with application number 202211051629.

Technical field

The present application relates to the technical field of terminal equipment, and in particular to an electronic device.

Background technique

Foldable electronic devices connect multiple electronic screens together through mechanical hinges. In daily use, foldable electronic devices have two states: unfolded and folded. Users can obtain two completely different usage experiences at the same time. Foldable electronic devices While the device brings convenience to users, the design of the antenna system of foldable electronic devices also faces many challenges.

In some scenarios, the two screens of a foldable electronic device are covered by a whole flexible screen. When the foldable electronic device is in the folded state, the flexible screens covering the two screens of the electronic device are in a bent state. A cavity will be formed between the indium tin oxide (ITO) layers of the flexible screen. The resonant frequency of the cavity is just within the working frequency band of the electronic device antenna system, thus forming energy in the frequency band in which the antenna can work. Loss, the antenna performance of electronic equipment is poor.

Contents of the invention

The purpose of the embodiments of this application is to provide a form recognition method, electronic equipment and terminal equipment, which can solve the problem of poor antenna performance of electronic equipment.

An embodiment of the present application provides an electronic device, which includes: a first antenna and a second antenna; when the first body and the second body of the electronic device are in a folded state, the first The feeding end of the antenna excites the first current generated by the first antenna in the first direction, and the feeding end of the second antenna excites the second current generated by the second antenna in the second direction.

The technical solution disclosed in the application embodiment includes: when the first body and the second body of the electronic device are in a folded state, the feed end of the first antenna excites the first antenna to generate a third The direction of a current is a first direction, and the direction of the second current generated by the feeding end of the second antenna when exciting the second antenna is a second direction, wherein the first direction is opposite to the second direction. . In this way, the current directions of the first antenna and the second antenna are opposite, and the excitation signal received through the resonant cavity is the vector sum of the first current and the second current. Since the first current and the second current are in opposite directions, the currents will cancel each other out. , weakening its impact on the antenna. Furthermore, by arranging the first antenna and the second antenna, a multiple-input multiple-output (Multiple-Input Multiple-Out-put, MIMO) antenna can be formed to improve the communication performance of the entire electronic device.

Description of drawings

Figure 1 shows a schematic structural diagram of an electronic device provided by an embodiment of the present application;

Figure 2 shows a schematic structural diagram of an electronic device provided by an embodiment of the present application in an unfolded state;

Figure 3 shows a schematic structural diagram of an electronic device in a folded state provided by an embodiment of the present application;

Figures 4 and 5 show a schematic distribution diagram of ITO noise current provided by an embodiment of the present application;

Figure 6 shows a schematic structural diagram of a metal frame of an electronic device provided by an embodiment of the present application;

Figures 7 to 10 show a schematic diagram of the distribution structure of a first antenna and a second antenna provided by embodiments of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that data so used are interchangeable under appropriate circumstances so that embodiments of the present application can be used in other ways than as illustrated or described herein. The objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object may be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

As mentioned above, when the foldable electronic device is in the folded state, after the two screens of the electronic device are folded, the electromagnetic field coupling of the two screens of the electronic device is strong, and a cavity will be formed between the ITO layers of the two screens, which stimulates the ITO Cavity mode, the resonant frequency of the cavity is just within the working frequency band of the antenna system of the electronic device, and clutter is introduced into the frequency band of the original antenna, thereby causing energy loss in the frequency band where the antenna can work, and the antenna performance of the electronic device is poor.

The electronic device provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios.

As shown in FIG. 1 , a schematic structural diagram of an electronic device provided by an embodiment of the present application is shown. The electronic device may be a foldable electronic device, such as a foldable screen mobile phone. The electronic device 10 includes: a first antenna 101 and a second antenna 102 . When the first body and the second body of the electronic device are in a folded state, the direction of the first current generated by the feeding end of the first antenna 101 is the first direction, and the direction of the first current generated by the second antenna 102 is the first direction. The direction of the second current generated by the feeding terminal exciting the second antenna 102 is the second direction, where the first direction and the second direction are opposite.

That is to say, the excitation signal received by the resonant cavity formed when the first fuselage and the second fuselage are in the folded state is the vector sum of the first current and the second current.

Specifically, for a foldable electronic device, it has a first body and a second body, wherein the first body can be a main body, the second body can be a secondary body, and the first body and the second body can be a secondary body. The second fuselage can be connected through connecting parts such as rotating shafts and hinges, and the first fuselage and the second fuselage can be rotated through the connecting parts, thereby changing the angle between the first fuselage and the second fuselage, further making the The electronic device switches between the folded state and the unfolded state. As shown in Figure 2, when the electronic device is in the unfolded state, the first body 103 and the second body 104 are on the same horizontal plane. When the electronic device is in the folded state, At this time, as shown in FIG. 3 , the first body 103 and the second body 104 can fit together. Among them, the first body 103 and the second body 104 both include display modules. The display modules include but are not limited to display screens, ITO layers and metal frames. The first body 103 and the second body 104 are in In the folded state, a resonant cavity is formed between the ITO layers of the two display modules of the first body 103 and the second body 104. The resonant frequency of the resonant cavity may be exactly within the working frequency band of the electronic device. The electronic device The resonant cavity formed by the two ITO layers of the first fuselage 103 and the second fuselage 104 has no It cannot radiate energy out, resulting in energy loss, and the performance of the antenna of electronic equipment is poor.

After analyzing the ITO clutter formed by the resonant cavity formed by the two ITO layers of the first fuselage and the second fuselage, it was found that the electromagnetic field distribution of the 0.7GHZ clutter of ITO can be equivalently regarded as the basic Mode TE101 mode can be equivalently regarded as TE102 mode for 1.0GHZ. The distribution of ITO clutter current shown in Figure 4 and Figure 5 can be found that the current zero point (electric field strength point) of ITO clutter current is mainly distributed far away. The edge area of the hinge connecting the first fuselage and the second fuselage is relatively difficult to excite ITO clutter in the area close to the rotating shaft portion of the first fuselage and the second fuselage of the electronic device. Among them, the dotted lines in Figures 4 and 5 represent open circuits. Figure 4 shows the distribution of the electromagnetic field of the clutter at 0.7 GHZ, and Figure 5 shows the distribution of the electromagnetic field of the clutter at 1 GHZ.

Through the above analysis, the embodiment of the present application sets two antennas. The two antennas can be placed in the middle of the metal frame of the first fuselage away from the rotating shaft, or in the middle of the metal frame of the second fuselage far away from the rotating shaft. position, or the first antenna 101 is set on the first fuselage, and the second antenna 102 is set on the second fuselage. When the electronic device is in a folded state, the second body weakens the influence of the cavity clutter formed by the ITO layers of the two bodies of the electronic device. Through the theory of common mode and differential mode, the feed end of the first antenna 101 is excited. The direction of the current generated by the first antenna 101 is opposite to the direction of the current generated by the second antenna 102 excited by the feed end of the second antenna 102. The excitation signal received by the ITO cavity is the current of the first antenna 101 and the direction of the second antenna 102. The vector sum of the currents of the antenna 102 causes the coupled electromagnetic field vectors on the ITO cavity to cancel, thereby weakening the influence of the ITO cavity mode.

The metal frame is a metal bracket supported under the ITO layer. As shown in Figure 6, the metal frame 105 can be a metal edge provided around the first fuselage and the second fuselage. The metal frame can be At least part of them serves as the first antenna 101 and the second antenna 102 . The feed end refers to the signal input path of the antenna, the feed end of the first antenna 101 refers to the signal input path of the first antenna 101, and the feed end of the second antenna 102 refers to the signal input of the second antenna 102. path.

Through the technical solutions disclosed in the embodiments of the present application, when the first body and the second body of the electronic device are in a folded state, the feed end of the first antenna excites the first antenna to generate a third The direction of a current is the first direction, and the direction of the second current generated by the feeding end of the second antenna when exciting the second antenna is the second direction, wherein the first direction and the second direction are opposite. . In this way, the current directions of the first antenna and the second antenna are opposite, and the excitation signal received through the resonant cavity is the vector sum of the first current and the second current. Since the first current and the second current are in opposite directions, the currents will cancel each other out. , weakening its impact on the antenna. Furthermore, by arranging the first antenna and the second antenna, a MIMO antenna can be formed to improve the communication performance of the entire electronic device.

In a possible implementation, the first antenna 101 and the second antenna 102 are both disposed in the first edge area of the first fuselage or the second edge area of the second fuselage. The feeding end of the first antenna 101 is arranged at a first position of the first edge area, and the feeding end of the second antenna 102 is arranged at a second position of the first edge area. The first position and the second position are different. Alternatively, the feed end of the first antenna 101 is disposed at a third position in the second edge area, and the feed end of the second antenna 102 is disposed at a fourth position in the second edge area, and the third position and the fourth position are different.

Specifically, the first edge area may be the outer peripheral area of the first fuselage, and the second edge area may be the outer peripheral area of the second fuselage. For example, as shown in Figure 6, the outer peripheral area is where the metal frame is located.

Wherein, the first fuselage and the second fuselage are connected through a connecting component, the first edge area is an area opposite to the connecting component and away from the connecting component, and the second edge area is an area opposite to the connecting component and away from the connecting component, for example , as shown in FIG. 7 , the first edge area and the second edge area may be the middle position of the metal frame that is far away from the connecting component and opposite to the connecting component. Among them, the first antenna 101 is marked as ANT1, and the second antenna 102 is marked as ANT2. The connecting component may be a rotating shaft. The first antenna 101 and the second antenna 102 are arranged in the first edge area of the first fuselage or the first antenna 101 and the second antenna 102. When the second antenna 102 is arranged in the second edge area of the second fuselage, the first antenna 101 is the efg segment in Figure 7, the second antenna 102 is the cba segment in Figure 7, and the feed end of the first antenna 101ANT1 ( Feed1) is the position of e in Figure 7, which is the first position and the third position mentioned above. The feed end (Feed1) of the first antenna 101ANT1 excites the first antenna 101 to generate a current I1, of which The branch radiated by the current generated by the excitation is efg, that is, the direction of the current I1 generated by the excitation of the feed end (Feed1) of the first antenna 101ANT1 is from e to g, and the feed end (Feed2) of the second antenna 102ANT2 is as shown in Figure The position of c in 7 is the second position and the fourth position mentioned above. The feed terminal (Feed2) of the second antenna 102ANT2 excites the second antenna 102 to generate a current I2, and the current generated by the excitation is I2. The radiation branch is cba, that is, the direction of the current I2 generated by the feed terminal (Feed2) of the second antenna 102ANT2 is from c to a. It can be seen that the current I2 generated by the second antenna 102ANT2 = - the current I1 generated by the first antenna 101ANT1. For the ITO resonant cavity, the excitation signal received is equivalent to I, which is the third generated by the first antenna 101ANT1. The vector sum of the first current and the second current produced by the second antenna 102ANT2.

Furthermore, in order to minimize the impact of the ITO resonant cavity on the energy of the antenna, when the sum of the current vectors received by the ITO resonant cavity is zero, it can ensure that the impact of the ITO resonant cavity on the energy of the antenna is minimal. Therefore, this application implements In the example, the amplitudes of the first current and the second current are equal, that is According to the above description, the vector sum of current I1 and current I2 is zero, that is, I=I1+I2=0. In this way, by arranging the first antenna 101 and the second antenna 102 in an area far away from and opposite to the rotation axis connecting the first fuselage and the second fuselage, the current vectors received by the ITO resonant cavity are superimposed and then cancel and weaken. The ITO resonant cavity affects the frequency band of the antenna and improves the performance of the antenna.

More specifically, as shown in FIG. 7 , the above-mentioned first position and the second position may be symmetrical with respect to the fifth position of the first edge area, or the above-mentioned third position and the fourth position may be with respect to the second edge area. The sixth position is symmetrical, the fifth position and the sixth position are the positions of the above-mentioned point d. When the first position and the second position are symmetrical about the fifth position, the above-mentioned bc segment = ef segment, and ab segment = fg segment.

In a possible implementation, the first antenna 101 is disposed in the third edge area of the first fuselage, and the second antenna 102 is disposed in the fourth edge area of the second fuselage. Both the first antenna 101 and the second antenna 102 include at least part of the metal frame of the first body. Alternatively, both the first antenna 101 and the second antenna 102 include at least part of the metal frame of the second body. Alternatively, the first antenna 101 includes at least part of the metal frame of the first body, and the second antenna 102 includes at least part of the metal frame of the second body.

Specifically, the first antenna 101 and the second antenna 102 can be respectively arranged on different fuselages. The third edge area can be the location of the metal frame of the first fuselage as shown in Figure 6. The fourth edge area can be This is the location of the metal frame of the second fuselage as shown in Figure 6. In order to ensure that there is a certain degree of isolation between the first antenna 101 and the second antenna 102 when the electronic device is in the unfolded state, to avoid affecting the working performance between the antennas, and to improve the stability and reliability of the antenna work, in the electronic device When the first body and the second body are in the folded state, the first adjacent position and the second adjacent position are not opposite. That is to say, when the first body and the second body of the electronic device are in the folded state , the first adjacent position and the second adjacent position are staggered, thereby preventing the distance between the first adjacent position and the second adjacent position from being too close and affecting the working performance of the antenna.

In order to ensure that the isolation between the first antenna 101 and the second antenna 102 is maximized when the electronic device is in the unfolded state, the feed end of the second antenna 102 can be set at the vertex of the upper left corner of the first fuselage, and the first antenna The feed end of 101 is set at the vertex of the lower right corner of the second fuselage. In this way, when the electronic device is in the unfolded state, the physical distance between the feed end of the first antenna 101 and the feed end of the second antenna 102 is the largest. , thereby ensuring that the isolation between the first antenna 101 and the second antenna 102 is optimal, avoiding mutual influence, and further improving the working performance of the antenna. Specifically, the first antenna 101 includes a first sub-antenna and a second sub-antenna, the third edge area includes a first edge sub-area and a second edge sub-area, and the first edge sub-area and the second edge sub-area are adjacent to each other. . The first sub-antenna set It is placed in the first edge sub-region, the second sub-antenna is disposed in the second edge sub-region, and the feed end of the first antenna 101 is disposed in the first adjacent position of the first edge sub-region and the second edge sub-region. The second antenna 102 includes a third sub-antenna and a fourth sub-antenna. The fourth edge area includes a third edge sub-area and a fourth edge sub-area. The third edge sub-area and the fourth edge sub-area are adjacent to each other. The third edge sub-area is adjacent to the fourth edge sub-area. The antenna is disposed in the third edge sub-region, the fourth sub-antenna is disposed in the fourth edge sub-region, and the feed end of the second antenna 102 is disposed at the second adjacent position of the third edge sub-region and the fourth edge sub-region.

Specifically, as shown in Figure 8, the first antenna 101 is located in the lower right corner of the first fuselage. The first antenna 101 is composed of the short side of the lower part of the first fuselage and the long side of the right side, and includes In section abcd, the feed end (Feed) 103 of the first antenna 101 is the location of the intersection b (first adjacent position) of section ab (first sub-antenna) and section cd (second sub-antenna). The first antenna 101 The direction of the current I1 excited by the feed terminal is from b to d. Among them, the first antenna 101 is composed of a metal frame of the 102abcd segment, which is in the form of a T antenna. It mainly excites the monopole state of the bc segment. When the first antenna 101 works, it mainly relies on the above-mentioned bc segment branches to radiate. At this time, the first antenna 101 The first current I1 generated by the antenna 101 is mainly concentrated in the bc section.

As shown in Figure 9, the second antenna 102 is located at the upper left corner of the second fuselage. The second antenna 102 is composed of the short side of the upper part of the second fuselage and the long side of the left side, and includes an efgh segment. The feed end of the second antenna 102 is the location of the intersection f (the second adjacent position) of the ef segment (the third sub-antenna) and the fh segment (the fourth sub-antenna). The feed end of the second antenna 102 is excited by The direction of the current I2 generated by the second antenna 102 is from f to h, which is opposite to the direction of the current I1 generated by the feed end of the first antenna 101 . Among them, the second antenna 102 is composed of a metal frame with the above-mentioned structure efgh section, and its antenna form is also a T antenna, which mainly excites the monopole state of fg. When the second antenna 102 works, it mainly radiates from the fg branches. At this time, the The second current I2 is mainly concentrated in the fg segment.

Furthermore, in order to minimize the impact of the ITO resonant cavity on the energy of the antenna, when the sum of the current vectors received by the ITO resonant cavity is zero, it can ensure that the impact of the ITO resonant cavity on the energy of the antenna is minimal. Therefore, this application implements In the example, the amplitudes of the first current and the second current are equal, that is, according to the above description, the vector sum of the current I1 and the current I2 is zero, that is, I=I1+I2=0.

It can be seen from the above embodiment that the current excited by the feed end of the first antenna 101 and the current excited by the feed end of the second antenna 102 are opposite. The above embodiment will be further explained below with reference to Figure 10 , please refer to Figure 10. When the electronic device is in the folded state, the two ITO layers of the electronic device are folded in half to form a resonant cavity with a single-end short circuit and a three-end open circuit. In the above embodiment, the feed end of the first antenna 101 excites The current and the current excited by the feed terminal of the second antenna 102 have the same amplitude. For the ITO resonant cavity, its equivalent coupling current I=I1+I2=0. At this time, the influence of ITO cavity mode clutter weakens.

Furthermore, the first antenna 101 and the second antenna 102 are both inverted-F (Inverted-F Antenna, IFA) antennas. For IFA antennas, a half-wave mode can be excited.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

An electronic device including: a first antenna and a second antenna;

When the first body and the second body of the electronic device are in a folded state, the direction of the first current generated by the feeding end of the first antenna is the first direction, so The feeding end of the second antenna excites the second current generated by the second antenna in a second direction, where the first direction and the second direction are opposite.
The electronic device according to claim 1, wherein the first antenna and the second antenna are both disposed at a first edge area of the first body or a second edge area of the second body;

The feeding end of the first antenna is arranged at a first position of the first edge area, the feeding end of the second antenna is arranged at a second position of the first edge area, the first position and The second position is different;

Alternatively, the feed end of the first antenna is disposed at a third position of the second edge region, the feed end of the second antenna is disposed at a fourth position of the second edge region, and the third The position is different from the fourth position.
The electronic device according to claim 2, wherein the first position and the second position are symmetrical with respect to a fifth position of the first edge area, or the third position and the fourth position are symmetrical with respect to the fifth position of the first edge area. The sixth position of the second edge area is symmetrical.
The electronic device according to claim 2, wherein the first body and the second body are connected through a connecting component, and the first edge area is opposite to the connecting component and away from the connecting component. area, and the second edge area is an area opposite to the connecting component and away from the connecting component.
The electronic device according to claim 1, wherein the first antenna is disposed on a third edge area of the first body, and the second antenna is disposed on a fourth edge area of the second body.
The electronic device of claim 5, wherein the first antenna includes a first Sub-antenna and second sub-antenna, the third edge area includes a first edge sub-area and a second edge sub-area, the first edge sub-area and the second edge sub-area are adjacent;

The first sub-antenna is disposed in the first edge sub-region, the second sub-antenna is disposed in the second edge sub-region, and the feed end of the first antenna is disposed in the first edge sub-region. and the first adjacent position of the second edge sub-region;

The second antenna includes a third sub-antenna and a fourth sub-antenna, the fourth edge area includes a third edge sub-area and a fourth edge sub-area, the third edge sub-area and the fourth edge sub-area Adjacent;

The third sub-antenna is disposed in the third edge sub-region, the fourth sub-antenna is disposed in the fourth edge sub-region, and the feed end of the second antenna is disposed in the third edge sub-region. The second adjacent position to the fourth edge sub-region.
The electronic device according to claim 6, wherein when the first body and the second body of the electronic device are in a folded state, the first abutment position is different from the second abutment position. relatively.
The electronic device according to any one of claims 1 to 7, wherein the first current and the second current have equal amplitudes.
The electronic device according to claim 1, wherein the first antenna and the second antenna are both inverted F-type IFA antennas.
The electronic device according to claim 1, wherein the first antenna and the second antenna each comprise at least part of a metal frame of the first body;

Alternatively, both the first antenna and the second antenna include at least part of the metal frame of the second body;

Alternatively, the first antenna includes at least part of the metal frame of the first body, and the second antenna includes at least part of the metal frame of the second body.