Antenna structure and electronic equipment

Abstract

This application discloses an antenna structure and electronic device. The antenna structure includes a first frame and a second frame rotatably connected. At least one first antenna is mounted on the first frame, and at least one second antenna is mounted on the second frame. The current direction of the first antenna and / or the second antenna is variable. When the first and second frames are in an unfolded state, the feed phases of the first and second antennas are in the same direction. When the first and second frames are in a folded state, the feed phase of one of the first and second antennas is adjusted to generate a reverse current. In this application's technical solution, by adjusting the current directions of the first and second antennas mounted on the two rotating frames, the coupling between them is reduced in the folded state, ensuring the antenna's radiation efficiency.

Description

Technical Field

[0001] This application belongs to the field of antenna equipment technology, specifically relating to an antenna structure and electronic equipment. Background Technology

[0002] Currently, for foldable screen phones, the antennas are basically set around the frame. When unfolded, multiple antennas can work normally, but when folded, the distance between multiple antennas is shortened. One antenna will induce a reverse current in other antennas. When the resonant frequencies of two antennas are very close, the performance of that antenna will be reduced. Summary of the Invention

[0003] This application aims to provide an antenna structure and electronic device that, by adjusting the feed phase of a first antenna and a second antenna mounted on two rotating frames, reduces the coupling between them in the folded state, thereby ensuring the radiation efficiency of the antenna.

[0004] To achieve the above objectives, an embodiment of the first aspect of this application provides an antenna structure, comprising: a first frame and a second frame rotatably connected, wherein at least one first antenna is provided on the first frame and at least one second antenna is provided on the second frame, and the current direction of the first antenna and / or the second antenna is variable; wherein, when the first frame and the second frame are in an unfolded state, the feed phases of the first antenna and the second antenna are the same, and when the first frame and the second frame are in a folded state, a reverse current is generated by adjusting the feed phase of one of the first antenna and the second antenna.

[0005] According to the embodiment of the antenna structure provided in this application, it mainly includes a first frame and a second frame, both of which are equipped with antennas. Specifically, the first frame can rotate relative to the second frame, and there are two main states during the rotation: an unfolded state and a folded state. In the unfolded state, the currents of the first antenna on the first frame and the second antenna on the second frame are in the same direction, allowing them to operate normally with minimal mutual interference. However, when the first and second frames are in the folded state, the distance between the first and second antennas shortens, causing one antenna to receive coupling from the other, resulting in a reverse current. In the folded state, this solution adjusts the feed phase of the first or second antenna to ensure that the current directions of the first and second antennas remain the same, reducing the possibility of negatively impacting the antenna's radiation efficiency due to reverse current generated by coupling. Furthermore, by adjusting the current direction of the first or second antenna, when using the same current direction, it is even possible to improve the radiation efficiency of the other antenna by using an auxiliary wave generated by a branch of one antenna, causing the auxiliary wave to fall near the resonance of the other antenna. In short, by adjusting the current direction as described above, the negative impact on antenna radiation efficiency can be reduced, while the radiation efficiency of a particular antenna can be improved, thereby enhancing the overall communication performance of the device.

[0006] It should be noted that the current direction in this application is the actual flow direction of the current. For example, the current direction of the first antenna is from the shaft side to the opening side, and the current direction of the second antenna is also from the shaft side to the opening side. It has no absolute relationship with the start and end points of the internal current.

[0007] An embodiment of the second aspect of this application provides an electronic device comprising: a first folding body and a second folding body; and an antenna structure as described in the first aspect embodiment above, wherein a first frame of the antenna structure is disposed on the first folding body and a second frame is disposed on the second folding body.

[0008] According to the embodiments of the electronic device provided in this application, it mainly includes a first folding body and a second folding body. By setting the first frame of the antenna structure on the first folding body and the second frame on the second folding body, the first frame and the second frame can switch between a folded state and an unfolded state when the first folding body rotates relative to the second folding body, thereby taking into account both portability and functionality.

[0009] Furthermore, since the electronic device includes the antenna structure of the above embodiment, it enjoys the beneficial effects of the embodiment having the above antenna structure.

[0010] Electronic devices include foldable devices such as mobile phones, tablets, cameras, camcorders, and laptops.

[0011] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0012] Figure 1 A schematic diagram of an antenna structure according to an embodiment of this application in a folded state is shown;

[0013] Figure 2 A schematic diagram showing the relative positions of the first antenna and the second antenna according to one embodiment of this application is shown;

[0014] Figure 3 A schematic diagram of an antenna structure according to an embodiment of this application in its deployed state is shown;

[0015] Figure 4 A schematic diagram showing the relative positions of the first antenna and the second antenna according to one embodiment of this application is shown;

[0016] Figure 5 A schematic diagram of an antenna structure according to an embodiment of this application in a folded state is shown;

[0017] Figure 6 A schematic diagram showing the relative positions of the first antenna and the second antenna according to one embodiment of this application is shown;

[0018] Figure 7 A schematic diagram illustrating the principle of common-mode feeding in one embodiment of this application is shown;

[0019] Figure 8 A schematic diagram illustrating the principle of differential mode feeding in one embodiment of this application is shown;

[0020] Figure 9 A schematic diagram of the structure of an electronic device according to one embodiment of this application is shown.

[0021] in, Figures 1 to 9 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0022] 100: Antenna structure; 102: First frame; 1022: First antenna; 1024: First feed potential; 104: Second frame; 1042: Second antenna; 1044: Second feed potential; 106: Sensor; 108: Hinge structure; 200: Electronic device; 202: First folding body; 204: Second folding body; 206: Flexible screen. Detailed Implementation

[0023] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] The electronic devices provided in this application embodiment can be foldable devices such as mobile phones, tablets, cameras, camcorders, and laptops.

[0027] The following reference Figures 1 to 9 This application describes antenna structures and electronic devices provided according to embodiments thereof.

[0028] like Figure 1 and Figure 3 As shown, one embodiment of this application proposes an antenna structure 100, including: a first frame 102 and a second frame 104 rotatably connected. The first frame 102 is provided with at least one first antenna 1022, and the second frame 104 is provided with at least one second antenna 1042. The current direction of the first antenna 1022 and / or the second antenna 1042 is variable. When the first frame 102 and the second frame 104 are in an unfolded state, the feed phases of the first antenna 1022 and the second antenna 1042 are the same. When the first frame 102 and the second frame 104 are in a folded state, a reverse current is generated by adjusting the feed phase of one of the first antenna 1022 and the second antenna 1042.

[0029] According to the embodiment of the antenna structure 100 provided in this application, it mainly includes a first frame 102 and a second frame 104. Antennas are disposed on both the first frame 102 and the second frame 104. Specifically, the first frame 102 can rotate relative to the second frame 104. During the rotation, there are two main states: an unfolded state and a folded state. In the unfolded state, as... Figure 4 As shown in the figure, the arrows indicate the direction of the current. The currents of the first antenna 1022 located on the first frame 102 and the second antenna 1042 located on the second frame 104 are in the same direction and can work normally with little mutual influence.

[0030] However, when the first frame 102 and the second frame 104 are in a folded state, such as Figure 2 As shown in the diagram, the arrows indicate the direction of the current. The distance between the first antenna 1022 and the second antenna 1042 will shorten, causing one antenna to be coupled to the other, resulting in a reverse current. This solution adjusts the feed phase of either the first antenna 1022 or the second antenna 1042 in the folded state. This ensures that the current directions of the first antenna 1022 and the second antenna 1042 remain the same during folding, reducing the possibility of negatively impacting antenna radiation efficiency due to reverse current caused by coupling. Furthermore, by adjusting the current direction of either the first antenna 1022 or the second antenna 1042, when using the same current direction, it's even possible to improve the radiation efficiency of the other antenna by using an auxiliary wave generated by a branch of one antenna, causing the auxiliary wave to fall near the resonance of the other antenna. In short, by adjusting the current direction, the negative impact on antenna radiation efficiency can be reduced, while the radiation efficiency of one antenna can be improved, thereby enhancing the overall communication performance of the device.

[0031] It should be noted that the current direction in this application is the actual flow direction of the current. For example, the current direction of the first antenna 1022 flows from the shaft side to the opening side, and the current direction of the second antenna 1042 also flows from the shaft side to the opening side. It has no absolute correlation with the start and end points of the internal current.

[0032] It is understandable that in the unfolded state, the current direction of the first antenna 1022 and the current direction of the second antenna 1042 are default. Only in the folded state is it necessary to control the current direction of one of the antennas. Specifically, the control method is mainly to change the feed phase, thereby making the current direction on the antenna opposite.

[0033] Furthermore, it also includes: a sensor 106, disposed on the first frame 102 or the second frame 104, the sensor 106 being used to determine the opening and closing state of the first frame 102 and the second frame 104; wherein the opening and closing state specifically includes an unfolded state and a folded state.

[0034] By setting a sensor 106 on the first frame 102 or the second frame 104, the opening and closing states can be acquired, so as to control the current direction of the first antenna 1022 or the second antenna 1042 according to the specific unfolded state and folded state, so as to control the generation of reverse current in the folded state, thereby ensuring the radiation efficiency of the antenna.

[0035] It is understood that the opening and closing states of the first frame 102 and the second frame 104 include an unfolded state and a folded state. The type of sensor 106 can be selected as a position sensor 106, a laser sensor 106, an acceleration sensor 106, an angle sensor 106, etc., or even a touch switch can be used as a sensor 106. Regardless of whether the detection principle is based on position detection or folding angle detection, as long as the relative position between the first frame 102 and the second frame 104 can be determined, it is the sensor 106 proposed in this application.

[0036] Furthermore, it also includes: a first feed potential 1024, disposed on the first antenna 1022; and a second feed potential 1044, disposed on the second antenna 1042. When the first frame 102 and the second frame 104 are in the unfolded state, the feed phase of the first feed potential 1024 and the feed phase of the second feed potential 1044 are equal in amplitude and direction. When the first frame 102 and the second frame 104 are in the folded state, the feed phase of the first feed potential 1024 and the feed phase of the second feed potential 1044 are equal in amplitude and opposite in direction.

[0037] By setting a first feed potential 1024 on the first antenna 1022 and a second feed potential 1044 on the second antenna 1042, in the folded state, the feed lines of the two feed potentials are in opposite phases with equal amplitude, i.e., a phase difference of 180°, forming a differential-mode feed. This ensures that the current direction of the first antenna 1022 is the same as that of the second antenna 1042 when folded, reducing the impact on antenna radiation efficiency. In the unfolded state, by setting the feed potentials of the two feed potentials in the same direction, i.e., a phase difference of 0°, a common-mode feed is formed. This ensures that the current direction remains the same when unfolded, improving communication performance.

[0038] In particular, in the deployed state, the first antenna 1022 and the second antenna 1042 can operate independently, with one antenna improving its radiation efficiency by using the parasitic branch of the other antenna.

[0039] Furthermore, such as Figure 5 and Figure 6The number of secondary antennas 1042 shown is multiple, and the operating frequency bands of all secondary antennas 1042 overlap with those of the first antenna 1022. When the first frame 102 and the second frame 104 are in a folded state, the feed phase of the first antenna 1022 is adjusted according to the current direction of the secondary antennas 1042. Figure 6 The arrow indicates the direction of the current, such as... Figure 6 As shown, by adjusting the feed phase of the first antenna 1022, the current direction of the first antenna 1022 is made to be the same as the current direction of the second antenna 1042.

[0040] By setting up multiple second antennas 1042, when the operating frequency band of the second antenna 1042 overlaps with that of the first antenna 1022, if the first frame 102 and the second frame 104 are folded together, since there are many second antennas 1042, when adjusting the feed phase, only the feed phase of the first antenna 1022 needs to be adjusted to adjust the current direction. The number of feed phases that need to be adjusted is small, making it easier to operate.

[0041] Furthermore, the coupling coefficients of the multiple second antennas 1042 and the first antenna 1022 are different, and the frequency band generated by the coupling of the second antenna 1042 and the first antenna 1022 is different from the frequency band of the second antenna 1042 or the frequency band of the first antenna 1022.

[0042] By limiting the coupling coefficient and frequency band, when the coupling coefficients of multiple second antennas 1042 and the first antenna 1022 are all different, that is, the overlapping area of ​​different second antennas 1042 and the first antenna 1022 is different, and the energy of the first antenna 1022 coupled to different second antennas 1042 is different, a new frequency band can be generated when coupling occurs. This is equivalent to expanding the original antenna radiation frequency band into a new frequency band, which greatly improves the antenna's communication capability.

[0043] Furthermore, it also includes: a hinge structure 108, disposed between the first frame 102 and the second frame 104, wherein the first frame 102 is rotatably connected to the second frame 104 through the hinge structure 108; wherein the first antenna 1022 and the second antenna 1042 are respectively disposed on the side of the first frame 102 and the second frame 104 away from the hinge structure 108.

[0044] By setting a hinge structure 108 between the first frame 102 and the second frame 104, and placing the two frames on opposite sides of the hinge structure 108, the first frame 102 can rotate relative to the second frame 104. Furthermore, since the rotation mechanism is the hinge structure 108, located between the first frame 102 and the second frame 104, its rotation range is relatively large. By placing the first antenna 1022 and the second antenna 1042 on opposite sides of the two frames—that is, the first antenna 1022 on the side of the first frame 102 furthest from the hinge structure 108, and the second antenna 1042 on the side of the second frame 104 furthest from the hinge structure 108—mutual interference between the first antenna 1022 and the second antenna 1042 is reduced in the deployed state.

[0045] Furthermore, the first frame 102 is plate-shaped, and there are multiple first antennas 1022, which are disposed on the side walls of the first frame 102 adjacent to or opposite to the hinge structure 108.

[0046] By setting a plate-shaped first frame 102, when setting multiple first antennas 1022, the first antennas 1022 can be set along the edge sidewall of the first frame 102, specifically, set on the two sidewalls of the first frame 102 adjacent to the hinge structure 108, or on the sidewall opposite to the hinge structure 108. By setting multiple antennas, it is easier to meet the communication needs of different frequency bands, and it is also easier to use the technology of multiple-input multiple-output (MIMO) for transmitting and receiving signals.

[0047] Furthermore, the second frame 104 is plate-shaped, and there are multiple second antennas 1042, which are located on the side walls of the second frame 104 adjacent to or opposite to the hinge structure 108.

[0048] By setting a plate-shaped second frame 104, when setting multiple second antennas 1042, the second antennas 1042 can be set along the edge sidewall of the second frame 104, specifically, set on the two sidewalls of the second frame 104 adjacent to the hinge structure 108, or on the sidewall opposite to the hinge structure 108. By setting multiple antennas, it is easier to meet the communication needs of different frequency bands, and it is also easier to use the technology of multiple-input multiple-output (MIMO) for transmitting and receiving signals.

[0049] like Figure 9As shown, the electronic device 200 provided in the second aspect of this application includes: a first folding body 202 and a second folding body 204; as in the antenna structure 100 in the first aspect embodiment above, the first frame 102 of the antenna structure 100 is disposed on the first folding body 202, and the second frame 104 is disposed on the second folding body 204.

[0050] According to the embodiment of the electronic device 200 provided in this application, it mainly includes a first folding body 202 and a second folding body 204. By setting the first frame 102 of the antenna structure 100 on the first folding body 202 and the second frame 104 on the second folding body 204, the first frame 102 and the second frame 104 can switch between a folded state and an unfolded state when the first folding body 202 rotates relative to the second folding body 204, thereby taking into account both portability and functionality.

[0051] Furthermore, since the electronic device 200 includes the antenna structure 100 of the above embodiment, it has the beneficial effects of the embodiment of the antenna structure 100 described above.

[0052] Among them, electronic devices 200 include devices with folding functions such as mobile phones, tablets, cameras, camcorders, and laptops.

[0053] Furthermore, it also includes: a flexible screen 206, disposed on one side of the first frame 102 and the second frame 104, wherein when the first frame 102 and the second frame 104 are in a folded state, part of the flexible screen 206 is attached to another part of the flexible screen 206.

[0054] By setting a flexible screen 206 on one side of the first frame 102 and the second frame 104, it can be placed on the inside. That is, in the folded state, the flexible screen 206 is close to the body, so that the two folded bodies can provide better protection for the flexible screen 206.

[0055] It is understandable that the flexible screen 206 also bends when it is folded.

[0056] This application also proposes an antenna device according to a specific embodiment for a foldable screen electronic mobile terminal device. Under different usage scenarios, the feeding phase of the main and sub-body antenna units is switched by judging the state of the device (unfolded and folded) to improve the radiation efficiency of the antenna in the folded state. At the same time, the reconfigurability of the main and sub-body antennas in the unfolded and folded states improves the reuse of structure and space.

[0057] This application primarily adjusts the system by recognizing the machine's state. In the folded state, the reverse current generated due to the complex environment caused by multiple antennas affects other antennas, leading to decreased antenna efficiency. This is addressed by utilizing methods such as... Figure 8The differential-mode feeding method shown alters the feed phase of one or more antennas, changing the reverse current on the antenna and thus improving its radiation efficiency. In the deployed state, it uses methods such as... Figure 7 The common-mode feeding method shown is such that the current between antennas is in the same direction, so there is no problem of efficiency degradation. Secondly, when deployed, the antennas can reuse their structure, thereby improving antenna efficiency.

[0058] in, Figure 7 and Figure 8 The middle arrow indicates the direction of current flow.

[0059] In one specific embodiment, the feeding phase of the antenna units of the main and secondary bodies (i.e., the first folding frame and the second folding frame) is intelligently switched in different scenarios to solve the problem of reverse current coupling in the secondary body when folded, thereby improving the radiation efficiency of the folded antenna. Specifically, antenna 1 and antenna 2 (i.e., the first antenna 1022 and the second antenna 1042) are provided on the top or bottom side of the foldable phone. When folding occurs, the original antenna 1 (i.e., the first antenna 1022) on the main screen and antenna 2 (i.e., the second antenna 1042) on the secondary screen will experience reverse current. If the wave generated by the electrical length of antenna 2 falls within the frequency band supported by antenna 1, the efficiency of antenna 1 will be affected. When folding occurs, the first antenna 1022 and the second antenna 1042...

[0060] For the antennas positioned at the top, namely antenna 1 and antenna 2, the system identifies the usage scenario in different folding and unfolding scenarios and allocates the feed phase signal of antenna 1 or antenna 2 accordingly. For example, in the folded state, the original sub-fuselage position will induce a reverse current, affecting the radiation efficiency of antenna 1. At this time, the antenna pair uses differential mode feeding, that is, the feed of antenna 2 is phase-opposite to the feed of antenna 1, in order to change the reverse current induced by antenna 2 to be in the same direction as the current on antenna 1, thereby improving the radiation efficiency of antenna 1. At the same time, in the unfolded state, antenna 2 improves its efficiency by using the parasitic branch (auxiliary branch) of antenna 1 to generate an auxiliary wave that falls near the resonance of antenna 2 (the resonant frequency generated by the auxiliary branch is higher than the frequency generated by antenna 2 itself, and the radiation efficiency generated by the auxiliary branch will improve the efficiency of the wave of antenna 2 itself).

[0061] The relationship between wavelength and frequency is given by λ=C×T, where T=1 / F, C is the speed of light, F is the frequency, T is the period, and λ is the wavelength. The smaller the frequency, the longer the wavelength required. This is because mobile phone antennas need to support the entire frequency band to meet user needs. Furthermore, high-end phones on the market currently have MIMO functionality in some frequency bands, so multiple antennas are needed to support these bands, such as 1710 MHz ~ 2690 MHz.

[0062] If antenna 1 is designed for the LMH (700 MHz~2690 MHz) band and antenna 2 for the MHB (1710 MHz~2690 MHz) band, then antenna 1 should be longer than antenna 2. However, an antenna's length cannot be infinitely long. A specific length corresponds to a specific resonant frequency, at which the antenna's radiation efficiency is optimal. Infinitely increasing the length would cause the optimal radiation efficiency to fall outside the desired frequency band, resulting in poor performance during later matching. Furthermore, since antennas 1 and 2 have overlapping frequency ranges, a reverse current from one antenna might affect the efficiency of the other. Therefore, the selection of the feed point and return point depends on the frequency range supported by the antenna, and secondly on the initial impedance position during later tuning, facilitating the use of the simplest matching method to achieve better antenna efficiency.

[0063] In another specific embodiment, the number of antennas located on the sub-body is increased. Antenna 2 and antenna 3 (i.e., two second antennas 1042) are both located on the sub-body. In this folded state, under a multi-antenna environment, the reverse current induced by antenna 1 to antennas 2 and 3 leads to a decrease in the radiation efficiency of antenna 1. By adjusting the feed phase of antenna 1 on the main unit to be equal in amplitude and opposite in phase to antennas 2 and 3 (differential mode), the radiation efficiency of antennas 1, 2, and 3 is improved. At the same time, antennas 2 and 1, and antennas 3 and 1, through different coupling coefficients (the overlapping area of ​​antennas 1, 2, and 3 is different, and the energy coupled from antenna 1 to antennas 2 and 3 is different), the new frequency bands generated by antennas 2, 1, 3, and 1 are different, thus improving the efficiency of the antennas.

[0064] In the deployed state, the feed of auxiliary antenna 1 is in phase and of equal amplitude with antennas 2 and 3 (common mode). At this time, its excitation current is in the same direction as antennas 2 and 3, optimizing its radiation efficiency. Antennas 1, 2, and 3 can all work independently. Meanwhile, antenna 2 improves its radiation efficiency by utilizing the parasitic branch of antenna 1, thereby improving the overall communication performance of the device.

[0065] More specifically, antenna 1 is designed for the LMH+NR band, antenna 2 for the MHB band, and antenna 3 for the NR band. Antennas 1 and 2, as well as antennas 1 and 3, have overlapping frequency bands, which may lead to reverse current affecting antenna efficiency. Therefore, it is necessary to reverse the phase of antenna 1 so that its current direction is the same as that of antennas 2 and 3 to improve the antenna's radiation efficiency. In the deployed state, each antenna can work independently, and the overlapping frequency bands improve the overall performance of the device under the MIMO function. Antenna 2 also improves its radiation efficiency by utilizing the parasitic branches of antenna 1, thereby improving the overall communication performance of the device.

[0066] In another specific embodiment, antenna 1 and antenna 2 are respectively located on both sides of the main body and the sub-body. After unfolding, the physical distance increases, the antennas do not affect each other, and each antenna works independently.

[0067] According to embodiments of the antenna structure and electronic device of this application, by adjusting the current direction of the first and second antennas disposed on two rotating frames, the coupling between them is reduced in the folded state, thereby ensuring the radiation efficiency of the antennas.

[0068] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An antenna structure, characterized by The application relates to a rotating connection first frame and a second frame, at least one first antenna is arranged on the first frame, at least one second antenna is arranged on the second frame, and the current direction of the first antenna and / or the second antenna is variable. When the first frame and the second frame are in an unfolded state, the feeding phase of the first antenna and the second antenna is the same, when the first frame and the second frame are in a folded state, the feeding phase of one of the first antenna and the second antenna is adjusted to generate a reverse current; in the unfolded state, the current directions of the first antenna on the first frame and the second antenna on the second frame are the same, and in the folded state, the current directions of the first antenna and the second antenna are the same. When the first frame and the second frame are in the folded state and adopt the same current direction, the branches of the first antenna generate auxiliary waves which are located near the resonance of the second antenna, or the branches of the second antenna generate auxiliary waves which are located near the resonance of the first antenna. The application further relates to a sensor arranged on the first frame or the second frame, the sensor is used for determining the opening and closing state of the first frame and the second frame.

2. The antenna structure of claim 1, wherein, The opening and closing state specifically includes the unfolded state and the folded state. The application further relates to a first feeding point arranged on the first antenna and a second feeding point arranged on the second antenna, when the first frame and the second frame are in the unfolded state, the feeding phase of the first feeding point is equal in amplitude and same in direction to the feeding phase of the second feeding point, when the first frame and the second frame are in the folded state, the feeding phase of the first feeding point is equal in amplitude and opposite in direction to the feeding phase of the second feeding point. The number of the second antennas is plural, the plural second antennas all have a frequency band which overlaps with the working frequency band of the first antenna, when the first frame and the second frame are in the folded state, the feeding phase of the first antenna is adjusted according to the current direction of the second antenna, so that the current direction of the first antenna is the same as the current direction of the second antenna.

3. The antenna structure of claim 2, wherein, The coupling coefficients of the plural second antennas and the first antenna are different, the frequency band generated by the coupling of the second antenna and the first antenna is different from the frequency band of the second antenna or the frequency band of the first antenna. The application further relates to a hinge structure arranged between the first frame and the second frame, the first frame is rotatably connected with the second frame through the hinge structure. The first antenna and the second antenna are arranged on the sides of the first frame and the second frame which are far away from the hinge structure.

4. The antenna structure of claim 1, wherein, The first frame is plate-shaped, the number of the first antennas is plural, and the plural first antennas are arranged on the side walls of the first frame which are adjacent to or opposite to the hinge structure.

5. The antenna structure of claim 4, wherein, The second frame is plate-shaped, the number of the second antennas is plural, and the plural second antennas are arranged on the side walls of the second frame which are adjacent to or opposite to the hinge structure.

6. The antenna structure of claim 1, wherein, The application further relates to a first folding body and a second folding body. ​ ​ 7. The antenna structure of claim 6, wherein, ​ 8. The antenna structure of claim 6, wherein, ​ 9. An electronic device, comprising: ​ ​ The antenna structure of any one of claims 1-8, wherein a first frame of the antenna structure is disposed on the first folded body and a second frame is disposed on the second folded body.

10. The electronic device of claim 9, wherein, Also included are: A flexible screen disposed on one side of the first frame and the second frame, wherein a portion of the flexible screen is in contact with another portion of the flexible screen when the first frame and the second frame are in the folded state.

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