Folding device

Abstract

The present application discloses a folding device, comprising: a folding structure, the folding structure having a first area and a second area, a first antenna unit being arranged in the first area; a second antenna unit being arranged in the second area; at least one of the first antenna unit and the second antenna unit being multiple in number, and when the folding structure is in a folded state, the first area and the second area are stacked, and when the folding structure is in an unfolded state, the first antenna unit and the second antenna unit constitute a first UWB antenna, and the UWB antenna can realize angle measurement and ranging functions, thereby improving space utilization and reducing mutual influence between antennas.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a folding device. Background Art

[0002] With the development of 5G communication technology, the era of the Internet of Everything is coming. Users have more and more functional requirements for electronic devices, and have put forward higher requirements for the convenience and intelligence of electronic devices. Indoor positioning and object finding are introduced into electronic devices, and ultra-wideband (UWB) communication technology is used to realize this function. The implementation of UWB antennas poses challenges to antenna performance and spatial layout in electronic devices.

[0003] With the development of flexible screen technology, foldable screen electronic devices are gradually maturing. The folding structure requires a hinge structure, and the changing antenna environment and more crowded space have put forward requirements for antennas. Due to the positioning principle, UWB antennas require at least three antennas to achieve three-dimensional plane positioning. Antennas occupy a large space in electronic devices and will interact with other antennas, affecting their respective performance. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a folding device to solve the problem that the UWB antenna occupies a large space and interacts with other antennas, affecting their respective performances.

[0005] The present application provides a folding device, comprising:

[0006] A folding structure, wherein the folding structure has a first area and a second area;

[0007] a first antenna unit, wherein the first antenna unit is disposed in the first area;

[0008] a second antenna unit, the second antenna unit being disposed in the second area; at least one of the first antenna unit and the second antenna unit being in plurality;

[0009] When the folding structure is in a folded state, the first region and the second region are stacked;

[0010] When the folding structure is in an unfolded state, the first antenna unit and the second antenna unit constitute a first UWB antenna.

[0011] Wherein, the number of the first antenna unit and the number of the second antenna unit are both multiple.

[0012] The number of the first antenna unit is one, and the number of the second antenna unit is two; or

[0013] The number of the first antenna units is two, and the number of the second antenna unit is one.

[0014] Wherein, the folding device also includes:

[0015] A third antenna unit, wherein the third antenna unit is disposed in the first area, and at least one of the first antenna units and the third antenna unit constitute a second UWB antenna.

[0016] There are multiple first antenna units and multiple third antenna units, and the multiple third antenna units are arranged at intervals.

[0017] The number of the first antenna units is two, and the number of the third antenna unit is one.

[0018] Wherein, the folding device also includes:

[0019] A fourth antenna unit, wherein the fourth antenna unit is arranged in the second area, the number of the second antenna units is two, and the two second antenna units and the fourth antenna unit constitute a third UWB antenna.

[0020] Wherein, the folding device also includes:

[0021] a control module, configured to control the first antenna unit and the second antenna unit to send and receive signals when the folding structure is in an unfolded state; and / or

[0022] used to control the first antenna unit and the third antenna unit to send and receive signals when the folding structure is in a folded state; and / or

[0023] Used to control the second antenna unit and the fourth antenna unit to send and receive signals when the folding structure is in a folded state.

[0024] Wherein, the folding device also includes:

[0025] A fourth antenna unit, wherein the fourth antenna unit is disposed in the second area, and at least one of the second antenna units and the fourth antenna unit constitute a third UWB antenna.

[0026] There are multiple second antenna units and multiple fourth antenna units, and the multiple fourth antenna units are arranged at intervals.

[0027] Wherein, the folding device also includes:

[0028] A flexible display screen is connected to the folding structure.

[0029] In the folding device of the embodiment of the present application, the folding structure has the first area and the second area, the first antenna unit is arranged in the first area, and the second antenna unit is arranged in the second area. The number of at least one of the first antenna unit and the second antenna unit is multiple. When the folding structure is in a folded state, the first area and the second area are stacked, and when the folding structure is in an unfolded state, the first antenna unit and the second antenna unit constitute a first UWB antenna. When the folding structure is in an unfolded state, the first UWB antenna composed of the first antenna unit and the second antenna unit can realize three-dimensional plane positioning, and the UWB antenna composed of the first antenna unit and the second antenna unit can realize angle measurement and ranging functions. The first antenna unit and the second antenna unit are arranged in the folding device, and the space of the folding device can be reused to improve the overall space utilization of the electronic device. The antenna unit is far away from other antennas, which can reduce the mutual influence between antennas, improve the isolation between other antennas, and reduce the risk of electromagnetic interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1a A schematic diagram of a folding device in an embodiment of the present application when it is in an unfolded state;

[0031] Figure 1b A schematic diagram of a folding device in an embodiment of the present application when it is in a folded state;

[0032] Figure 2a A schematic diagram of a folding device in another embodiment of the present application when it is in an unfolded state;

[0033] Figure 2b A schematic diagram of a folding device in another embodiment of the present application when it is in a folded state;

[0034] Figure 2c It is a schematic diagram of the arrangement of the first antenna unit and the third antenna unit in another embodiment of the present application;

[0035] Figure 2d A schematic diagram of the arrangement of the second antenna unit and the fourth antenna unit in another embodiment of the present application;

[0036] Figure 3a A schematic diagram of a folding device in another embodiment of the present application when it is in an unfolded state;

[0037] Figure 3b A schematic diagram of a folding device in another embodiment of the present application when it is in a folded state;

[0038] Figure 3c It is a schematic diagram of the arrangement of the first antenna unit and the third antenna unit in another embodiment of the present application;

[0039] Figure 3d It is a schematic diagram of the arrangement of the second antenna unit and the fourth antenna unit in another embodiment of the present application;

[0040] Figure 3e This is a schematic diagram of the AOA principle of UWB antenna;

[0041] Figure 4 A schematic diagram of a folding device in another embodiment of the present application when it is in an unfolded state;

[0042] Figure 5 A schematic diagram of a folding device in another embodiment of the present application when it is in an unfolded state;

[0043] Figure 6 A schematic diagram of another embodiment of the present application when the folding device is in an unfolded state.

[0044] Reference numerals

[0045] Folding structure 10;

[0046] First area 11; second area 12; folding area 13;

[0047] A first antenna unit 21; a second antenna unit 22;

[0048] A third antenna unit 23; a fourth antenna unit 24;

[0049] Display screen 30. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0052] The following is combined with Figures 1a to 6As shown, the folding device provided in the embodiment of the present application is described in detail through specific embodiments and their application scenarios.

[0053] like Figures 1a to 3d , Figures 4 to 6 As shown, the folding device may include: a folding structure 10, a first antenna unit 21 and a second antenna unit 22. The folding structure 10 may have a first area 11 and a second area 12. The first antenna unit 21 is arranged in the first area 11, and the second antenna unit 22 is arranged in the second area 12. The number of at least one of the first antenna unit 21 and the second antenna unit 22 is multiple. When the folding structure 10 is in a folded state, the first area 11 and the second area 12 are stacked, and at least one first antenna unit 21 and the second antenna unit 22 may be arranged in a corresponding position in the stacking direction; when the folding structure 10 is in an unfolded state, the first antenna unit 21 and the second antenna unit 22 constitute a first UWB antenna, and the first UWB antenna can realize the positioning of a three-dimensional plane and the angle measurement and ranging functions. The first antenna unit and the second antenna unit are arranged in the folding device, and the space of the folding device can be reused, thereby improving the overall space utilization of the electronic device and reducing the mutual influence between the antennas.

[0054] For example, the folding structure 10 may have a folding area 13. When the folding structure 10 is in an unfolded state, the first area 11 and the second area 12 may be located on both sides of the folding area 13, and the first area 11 and the second area 12 may be folded along the folding area 13. The first area 11, the second area 12 and the folding area 13 may all be rectangular, and the first area 11, the second area 12 and the folding area 13 may be parallel to each other. When the folding structure 10 is in an unfolded state, the first area 11 and the second area 12 may be at an equal distance from the folding area 13, and the first area 11 and the second area 12 may be symmetrical about the folding area 13. The folding structure 10 may be folded or unfolded along the folding area 13, and the folding area 13 may include a pivot axis or a straight strip, etc., and the first area 11 and the second area 12 may be folded along the pivot axis or the straight strip. The folding structure 10 may be a foldable plate, such as a flexible plate, and the folding area 13 may be a flexible area, so that the folding area 13 can be folded, so that the first area 11 and the second area 12 can be folded or unfolded. The folding structure 10 may include a hinge structure, and at least part of the first area 11 and the second area 12 may be located on the hinge structure; the folding structure 10 may include a hinge structure and a matching piece connected to both ends of the hinge structure, and the matching piece may be a shell or a frame, and at least part of the first area 11 and the second area 12 may be located on the matching piece, and the first area 11 and the second area 12 may be folded or unfolded along the pivot axis of the hinge structure. Due to the high frequency, the UWB antenna can accept a lower profile. At the same time, in order to ensure the stability of the radiation pattern, a patch antenna can be selected as the UWB antenna, which further reduces its profile. The hinge structure may be a metal structure, and the large area of ​​metal in the hinge can provide a stable ground for the UWB antenna, thereby ensuring the stability of the UWB antenna radiation pattern.

[0055] The first antenna unit 21 can be arranged in the first area 11, the second antenna unit 22 can be arranged in the second area 12, at least one of the first antenna unit 21 and the second antenna unit 22 can be multiple, and the multiple antenna units can be arranged at intervals along the length direction of the folding area 13, and the length direction of the folding area 13 can be Figure 1aThe left and right directions in the folding area 13. For example, the number of the first antenna unit 21 and the number of the second antenna unit 22 are both multiple, and the multiple first antenna units 21 can be arranged at intervals along the length direction of the folding area 13, and the multiple first antenna units 21 can be evenly spaced along the length direction of the folding area 13; the multiple second antenna units 22 can be arranged at intervals along the length direction of the folding area 13, and the multiple second antenna units 22 can be evenly spaced along the length direction of the folding area 13, and the spacing between two adjacent first antenna units 21 and the spacing between two adjacent second antenna units 22 can be equal. For example, the number of the first antenna unit 21 can be one, and the number of the second antenna unit 22 can be multiple, and the multiple second antenna units 22 can be arranged at intervals along the length direction of the folding area 13, and the multiple second antenna units 22 can be evenly spaced along the length direction of the folding area 13.

[0056] When the folding structure 10 is in the folded state, the first area 11 and the second area 12 are stacked, at least one first antenna unit 21 and the second antenna unit 22 are arranged opposite to each other, and the oppositely arranged first antenna unit 21 and the second antenna unit 22 can be stacked and spaced apart, that is, Figure 2b As shown, when the folding structure 10 is in a folded state, at least one first antenna unit 21 and a second antenna unit 22 are arranged in a corresponding position in the vertical direction. For example, the number of the first antenna unit 21 can be one, and the number of the second antenna unit 22 can be two, and the two second antenna units 22 can be evenly spaced along the length direction of the folding area 13. When the folding structure 10 is in a folded state, the first antenna unit 21 and a second antenna unit 22 can be arranged in a corresponding position in the vertical direction. When the folding structure 10 is in an unfolded state, the two first antenna units 21 and a second antenna unit 22 can be distributed in an L shape as a whole, and the first antenna unit 21 and the second antenna unit 22 can form a first UWB antenna, and the first UWB antenna formed by the first antenna unit 21 and the second antenna unit 22 can achieve positioning in a three-dimensional plane.

[0057] When the folding structure 10 is in the unfolded state, the first antenna unit 21 and the second antenna unit 22 are located on both sides of the folding area 13. The first antenna unit 21 and the second antenna unit 22 can realize three-dimensional plane positioning. The first antenna unit 21 and the second antenna unit 22 can form a first UWB antenna. The first UWB antenna composed of the first antenna unit 21 and the second antenna unit 22 can realize angle measurement and ranging functions. The first antenna unit 21 and the second antenna unit 22 are arranged in the folding device, and the space of the folding device can be reused to improve the overall space utilization of the electronic device. The antenna unit is far away from other antennas, which can reduce the mutual influence between antennas, improve the isolation between other antennas, and reduce the risk of electromagnetic interference.

[0058] In some embodiments, Figures 4 to 5 As shown, the number of the first antenna unit 21 and the second antenna unit 22 can both be multiple. When the folding structure 10 is in the folded state, each first antenna unit 21 and the corresponding second antenna unit 22 can be arranged in a corresponding position in the stacking direction. For example, the number of the first antenna unit 21 and the second antenna unit 22 are both two, and the two first antenna units 21 can be evenly spaced along the length direction of the folding area 13; the two second antenna units 22 can be evenly spaced along the length direction of the folding area 13, and the spacing between two adjacent first antenna units 21 can be equal to the spacing between two adjacent second antenna units 22. When the folding structure 10 is in the unfolded state, the distance between the adjacent first antenna units 21 and the second antenna unit 22 can be equal to the distance between the two adjacent first antenna units 21, so as to realize the angle measurement and ranging functions and the positioning functions.

[0059] In some embodiments, Figure 1a As shown, the number of the first antenna unit 21 may be one, and the number of the second antenna unit 22 may be two. Figure 1b As shown, when the folding structure 10 is in a folded state, the first antenna unit 21 and a second antenna unit 22 are arranged in a corresponding position in the vertical direction. When the folding structure 10 is in an unfolded state, the distance between adjacent first antenna units 21 and second antenna units 22 can be equal to the distance between two second antenna units 22. When the folding structure 10 is in an unfolded state, the two second antenna units 22 and a first antenna unit 21 can be distributed in an L shape as a whole, and the first antenna unit 21 and the second antenna unit 22 can form a first UWB antenna. The first antenna unit 21 and the second antenna unit 22 can realize positioning in a three-dimensional plane, and can realize the angle measurement and ranging functions.

[0060] Alternatively, if Figure 6As shown, the number of the first antenna units 21 is two, and the number of the second antenna unit 22 is one. When the folding structure 10 is in the folded state, the second antenna unit 22 and one first antenna unit 21 can be arranged in a corresponding position in the stacking direction, and the second antenna unit 22 arranged oppositely and one first antenna unit 21 are stacked and spaced. When the folding structure 10 is in the unfolded state, the distance between the adjacent first antenna unit 21 and the second antenna unit 22 can be equal to the distance between the two first antenna units 21. When the folding structure 10 is in the unfolded state, the two first antenna units 21 and one second antenna unit 22 can be distributed in an L shape as a whole, and the first antenna unit 21 and the second antenna unit 22 can form a first UWB antenna. The first antenna unit 21 and the second antenna unit 22 can realize positioning in a three-dimensional plane, and can realize the angle measurement and ranging functions. The folding device can be a hinge, and the folding device can be applied to a mobile phone. When the mobile phone is unfolded, the first UWB antenna is arranged directly above the hinge in an L-shaped distribution; when the mobile phone is folded, the L-shaped distribution of the first UWB antenna is destroyed, and the first UWB antenna can be in a non-working state. When the first UWB antenna is arranged directly above the hinge, the hinge space can be reused, thereby improving the space utilization rate of the folding device; after the first UWB antenna is arranged directly above the hinge, the problem of spatial conflict between the NFC and the first UWB antenna in the mobile phone can be avoided.

[0061] In the embodiments of the present application, Figure 2a to Figure 2c , Figure 5 As shown, the folding device may further include: a third antenna unit 23, the third antenna unit 23 may be arranged in the first area 11, at least one first antenna unit 21 and the third antenna unit 23 may constitute a second UWB antenna, and the second UWB antenna may realize the positioning of the three-dimensional plane and the angle measurement and ranging functions, and the space of the folding device may be reused to reduce the mutual influence between the antennas. The third antenna unit 23 may be arranged on the side of the first area 11 away from the folding area 13, the third antenna unit 23 may be arranged on the side of the first antenna unit 21 away from the folding area 13, and at least one first antenna unit 21 and the corresponding third antenna unit 23 may be arranged at intervals in a direction perpendicular to the length of the folding area 13. The distance between the third antenna unit 23 and the adjacent first antenna unit 21 may be equal to the distance between the two adjacent first antenna units 21, and the distance between the third antenna unit 23 and the adjacent first antenna unit 21 may be equal to the distance between the two adjacent second antenna units 22. The third antenna unit 23 and the first antenna unit 21 can form a second UWB antenna. When the folding device is in a folded or unfolded state, the second UWB antenna can be used to achieve three-dimensional plane positioning and angle and distance measurement functions.

[0062] In some embodiments, Figure 2a , Figure 5 As shown, the number of the first antenna unit 21 and the third antenna unit 23 can be multiple, the multiple third antenna units 23 can be arranged at intervals, the multiple third antenna units 23 can be arranged at intervals along the length direction of the folding area 13, each first antenna unit 21 can be arranged at intervals with the corresponding third antenna unit 23, and each first antenna unit 21 can be arranged at intervals with the corresponding third antenna unit 23 along the direction perpendicular to the length of the folding area 13. The third antenna unit 23 can be arranged on the side of the first area 11 away from the folding area 13, and the third antenna unit 23 can be arranged on the side of the first antenna unit 21 away from the folding area 13. When the folding structure 10 is in the folded state, the third antenna unit 23 and the first antenna unit 21 can form a second UWB antenna, and the second UWB antenna can realize the positioning of the three-dimensional plane and the angle measurement and ranging functions.

[0063] Alternatively, if Figure 2a As shown, the number of the first antenna units 21 is two, the number of the third antenna unit 23 is one, the third antenna unit 23 and one first antenna unit 21 can be arranged at intervals, and the third antenna unit 23 and one first antenna unit 21 can be arranged at intervals in a direction perpendicular to the folding area 13. The third antenna unit 23 can be arranged on a side of the first area 11 away from the folding area 13, and the third antenna unit 23 can be arranged on a side of the first antenna unit 21 away from the folding area 13. When the folding structure 10 is in a folded or unfolded state, the third antenna unit 23 and the two first antenna units 21 can be distributed in an L shape as a whole. The third antenna unit 23 and the two first antenna units 21 can form a second UWB antenna. The second UWB antenna can realize three-dimensional plane positioning and angle measurement and ranging functions. The UWB antenna can use conventional three antenna units to realize 3D positioning functions.

[0064] In the embodiments of the present application, Figure 2aAs shown, the folding device may also include: a fourth antenna unit 24, the fourth antenna unit 24 is arranged in the second area 12, the number of the second antenna units 22 is two, the two second antenna units 22 and the fourth antenna unit 24 can constitute a third UWB antenna, and when the folding device is in a folded or unfolded state, the third UWB antenna can realize the positioning of the three-dimensional plane and the angle measurement and ranging function. The fourth antenna unit 24 and a second antenna unit 22 can be arranged at intervals along a direction perpendicular to the length of the folding area 13; when the folding structure 10 is in a folded state, another first antenna unit 21 and another second antenna unit 22 can be arranged in a corresponding position in the stacking direction, and another first antenna unit 21 and another second antenna unit 22 are stacked and arranged at intervals. When the folding structure 10 is in a folded or unfolded state, the fourth antenna unit 24 and the two second antenna units 22 can be distributed in an L-shape as a whole, and the fourth antenna unit 24 and the two second antenna units 22 can form a third UWB antenna. When the folding structure 10 is in a folded or unfolded state, the fourth antenna unit 24 and the second antenna unit 22 can realize three-dimensional plane positioning, and can realize angle measurement and ranging functions. The folding device can be a hinge, and three antenna units are placed on each side of the hinge. When the folding device is in a folded state, both the upper and lower parts of the folding device have three antenna units to form an L-shaped layout, and can realize ranging and angle measurement functions.

[0065] Optionally, the folding device may further include: a control module, which may be a processor on a mainboard, and the control module may be used to control the first antenna unit 21 and the second antenna unit 22 to send and receive signals when the folding structure 10 is in the unfolded state, so that the first antenna unit 21 and the second antenna unit 22 are turned on, and the positioning function may be realized. The control module may be used to control the first antenna unit 21 and the third antenna unit 23 to send and receive signals when the folding structure 10 is in the folded state, so that the first antenna unit 21 and the third antenna unit 23 are turned on. When the folding structure 10 is in the unfolded state, the positioning function may be realized by sending and receiving signals by the first antenna unit 21 and the second antenna unit 22, and energy consumption may be saved. The control module may be used to control the second antenna unit 22 and the fourth antenna unit 24 to send and receive signals when the folding structure 10 is in the folded state, so that the second antenna unit 22 and the fourth antenna unit 24 are turned on, and the positioning function may be realized, and energy consumption may be saved.

[0066] In some embodiments, Figure 2a , Figure 2b and Figure 2dAs shown, the folding device also includes: a fourth antenna unit 24, the fourth antenna unit 24 can be arranged in the second area 12, at least one second antenna unit 22 and the fourth antenna unit 24 can constitute a third UWB antenna. The fourth antenna unit 24 can be arranged on the side of the second area 12 away from the folding area 13, the fourth antenna unit 24 can be arranged on the side of the second antenna unit 22 away from the folding area 13, at least one second antenna unit 22 and the corresponding fourth antenna unit 24 are arranged in a direction perpendicular to the length of the folding area 13. The distance between the fourth antenna unit 24 and the adjacent second antenna unit 22 can be equal to the distance between the two adjacent first antenna units 21, and the distance between the fourth antenna unit 24 and the adjacent second antenna unit 22 can be equal to the distance between the two adjacent second antenna units 22. The fourth antenna unit 24 and the second antenna unit 22 can form a third UWB antenna, and the positioning of the three-dimensional plane can be realized through the third UWB antenna, and the angle measurement and ranging functions can be realized.

[0067] Optionally, the number of the second antenna unit 22 and the fourth antenna unit 24 are both multiple, and the multiple fourth antenna units 24 can be arranged at intervals, and the multiple fourth antenna units 24 can be arranged at intervals along the length direction of the folding area 13, and each second antenna unit 22 can be arranged at intervals with the corresponding fourth antenna unit 24, and each second antenna unit 22 can be arranged at intervals with the corresponding fourth antenna unit 24 along a direction perpendicular to the length of the folding area 13. The fourth antenna unit 24 can be arranged on the side of the second area 12 away from the folding area 13, and the fourth antenna unit 24 can be arranged on the side of the second antenna unit 22 away from the folding area 13. When the folding structure 10 is in a folded state, the fourth antenna unit 24 and the second antenna unit 22 can form a third UWB antenna, and the third UWB antenna can realize positioning in a three-dimensional plane and can realize angle measurement and ranging functions.

[0068] In the embodiments of the present application, Figure 1b As shown, the folding device may further include: a flexible display screen 30, the display screen 30 is connected to the folding structure 10, and when the folding structure 10 is folded, the folding structure 10 drives the display screen 30 to fold; when the folding structure 10 is unfolded, the folding structure 10 drives the display screen 30 to unfold. One end of the display screen 30 may be connected to one end of the folding structure 10, and the other end of the display screen 30 may be connected to the other end of the folding structure 10. The display screen 30 and the folding structure 10 may be connected via a connecting bracket.

[0069] like Figure 3aAs shown, the folding device can be a hinge, and three UWB antenna units are placed on each side of the hinge. When the mobile phone is in a folded state, both the upper and lower parts of the mobile phone have three antenna units to form an L-shaped layout, and both can realize the distance measurement and angle measurement functions, such as Figure 3b to Figure 3d As shown. The folding device can be applied to a mobile phone. When the folding device is unfolded, the mobile phone is unfolded, and when the folding device is folded, the mobile phone is folded. When the mobile phone is unfolded, the gain of the antenna array is increased due to the increase in the number of antenna units, thereby increasing the ranging distance; when the mobile phone is unfolded, the angle measurement accuracy can be improved by testing the angle data multiple times and taking the average value; when a UWB antenna unit fails or is blocked, it can be screened out through an algorithm to ensure that the ranging and angle measurement work normally.

[0070] like Figures 3a to 3d As shown in the figure, 1 represents the third antenna unit, 2 represents the first antenna unit, 3 represents the first antenna unit, 4 represents the second antenna unit, 5 represents the second antenna unit, and 6 represents the fourth antenna unit. When the mobile phone is unfolded, for the ranging function, the increase in the number of antenna units and the improvement of the antenna gain will increase the ranging distance. The application of UWB antenna in the mobile phone to realize the angle measurement function can be based on the AOA (Angle of Arrival) principle, such as Figure 3e As shown, AOA is calculated by PDOA (Phase Difference Of Arrival). In theory, the phase difference of PDOA is given by formula (1), where d is the antenna spacing, λ is the working wavelength, and θ is the angle of the incoming wave. Formula (1) is:

[0071]

[0072] The specific derivation process is as follows: when the distance D is greater than several wavelengths, D>>d, it can be considered that θ1=θ2=θ;

[0073] After the incoming wave front reaches the first antenna unit, it needs an additional distance d1 to reach the second antenna unit, d1 = dcosθ;

[0074] The distance d1 can be obtained by equation (2), which is:

[0075]

[0076] Phase Difference It can be obtained from formula (3), which is:

[0077]

[0078] It must be less than 180° to avoid affecting the AOA result. In this way, all operating frequencies can be set to d<λ / 2. Therefore, taking CH9 (8.25GHz) as an example, d<18mm;

[0079] Then θ can be obtained by formula (4), which is:

[0080]

[0081] Among them, PDOA_H and PDOA_V are the phase differences of the horizontal angle and the vertical angle respectively, and AOA_H and AOA_V represent the angle measurement of the horizontal angle and the vertical angle respectively. The UWB antenna calculates the angle of the wave through the phase difference of the arrival signal of the two adjacent antennas. According to the derivation formula, in this embodiment, the vertical angle AOA_V1 can be solved by the phase difference PDOA_V1 between the arrival wave ANT1 (antenna unit 1) and ANT2 (antenna unit 2), and the vertical angle AOA_V2 can be solved by the phase difference PDOA_V2 between the arrival wave ANT3 (antenna unit 3) and ANT4 (antenna unit 4), and the vertical angle AOA_V3 can be solved by the phase difference PDOA_V3 between the arrival wave ANT5 (antenna unit 5) and ANT6 (antenna unit 6), and then the average value is taken, which can be obtained by formula (5), and formula (5) is:

[0082]

[0083] By performing vertical angle measurement multiple times to obtain data and then taking the average value, higher angle measurement accuracy can be achieved, improving user experience.

[0084] For horizontal angle measurement, the process is similar. The horizontal angle AOA_H1 is obtained by ANT2 and ANT3, and the horizontal angle AOA_H2 is obtained by using ANT4 and ANT5. Then the average value is taken, which can be obtained by formula (6). Formula (6) is:

[0085]

[0086] By performing horizontal angle measurement multiple times to obtain data and then taking the average value, higher angle measurement accuracy can be obtained, improving user experience. In addition, when the AOA of any set of data deviates too much from the average value, the set of data is discarded, thereby improving the angle measurement accuracy and fault tolerance.

[0087] Algorithm control can be added to the UWB unit. In the folded state, the working status of the UWB antennas on both sides is scanned, and only the UWB antenna on the side that can measure the distance normally is kept working normally. For the unfolded state, there can be only three UWB antenna units ( Figure 3aWhen the judgment program finds that the receiving level of the UWB antenna unit is too low or the angle measurement function is abnormal, the surrounding auxiliary units ( Figure 3a The gain of the entire UWB antenna is enhanced by using the 1, 5, and 6 antenna units in the middle. At the same time, the distance and angle measurement accuracy are improved by taking the average value and calibrating each other. In different situations, the algorithm controls whether the antenna unit is working, reduces the overall UWB antenna power consumption, and improves the battery life of the mobile phone.

[0088] When all six antenna units are working, the gain is improved, the ranging performance is improved, and no special algorithm processing is required. For angle measurement: antenna unit 1 and antenna unit 2, antenna unit 3 and antenna unit 4, antenna unit 5 and antenna unit 6 perform vertical angle measurement, and take the average value of these three test data; antenna unit 2 and antenna unit 3, antenna unit 4 and antenna unit 5 perform horizontal angle measurement and take the average value. If any group of data AOA deviates too much from the average value, the group of data is discarded, thereby improving the angle measurement accuracy and fault tolerance.

[0089] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A folding device, characterized in that: include: A folding structure, the folding structure comprising a hinge structure, the folding structure having a first area and a second area, the first area and the second area being folded or unfolded along a pivot axis of the hinge structure; a first antenna unit, wherein the first antenna unit is disposed in the first area; a second antenna unit, the second antenna unit being disposed in the second area; The number of at least one of the first antenna unit and the second antenna unit is multiple; When the folding structure is in a folded state, the first region and the second region are stacked; When the folding structure is in an unfolded state, the first antenna unit and the second antenna unit constitute a first UWB antenna, and the first UWB antenna is directly above the hinge structure.

2. The folding device according to claim 1, characterized in that: The number of the first antenna unit and the number of the second antenna unit are both multiple.

3. The folding device according to claim 1, characterized in that: The number of the first antenna unit is one, and the number of the second antenna units is two; or The number of the first antenna units is two, and the number of the second antenna unit is one.

4. The folding device according to claim 1, characterized in that: Also includes: A third antenna unit, wherein the third antenna unit is disposed in the first area, and at least one of the first antenna units and the third antenna unit constitute a second UWB antenna.

5. The folding device according to claim 4, characterized in that: There are multiple first antenna units and multiple third antenna units, and the multiple third antenna units are arranged at intervals.

6. The folding device according to claim 4, characterized in that: The number of the first antenna units is two, and the number of the third antenna unit is one.

7. The folding device according to claim 6, characterized in that: Also includes: A fourth antenna unit, wherein the fourth antenna unit is arranged in the second area, the number of the second antenna units is two, and the two second antenna units and the fourth antenna unit constitute a third UWB antenna.

8. The folding device according to claim 7, characterized in that: Also includes: a control module, configured to control the first antenna unit and the second antenna unit to send and receive signals when the folding structure is in an unfolded state; and / or Used to control the first antenna unit and the third antenna unit to send and receive signals when the folding structure is in a folded state; and / or Used to control the second antenna unit and the fourth antenna unit to send and receive signals when the folding structure is in a folded state.

9. The folding device according to claim 1, characterized in that: Also includes: A fourth antenna unit, wherein the fourth antenna unit is disposed in the second area, and at least one of the second antenna units and the fourth antenna unit constitute a third UWB antenna.

10. The folding device according to claim 9, characterized in that: There are multiple second antenna units and multiple fourth antenna units, and the multiple fourth antenna units are arranged at intervals.

11. The folding device according to claim 1, characterized in that: Also includes: A flexible display screen is connected to the folding structure.

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