electronic devices

Abstract

This application discloses an electronic device, comprising: a bracket; a UWB antenna, wherein the UWB antenna includes at least two antenna units, the antenna units being disposed on one side of the bracket, and a reflective layer being disposed on the other side of the bracket; at least a portion of the reflective layer being coupled to at least one of the at least two antenna units. In the electronic device of an embodiment of this application, the space within the bracket is fully utilized, with the antenna units disposed on one side of the bracket and the reflective layer disposed on the other side, thereby reducing space occupancy. The coupling of at least a portion of the reflective layer with at least one antenna unit increases the antenna's radiation frequency band, optimizes the antenna's radiation directivity, and enhances the positioning performance of the UWB antenna.

Description

Technical Field

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

[0002] With the development of 5G communication technology, users are increasingly demanding more functionality from electronic devices, placing higher demands on their convenience and intelligence. Indoor positioning and object finding are being introduced into electronic devices. Ultra-wideband (UWB) technology is used to achieve these functions, but achieving a good user experience requires high antenna performance. To achieve optimal performance, not only does it require specialized antenna design but also a reasonable layout. Existing UWB antennas occupy a large space, often prohibiting their installation within the terminal, hindering device miniaturization. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide an electronic device to solve the problem that the existing UWB antenna occupies a large antenna space.

[0004] The electronic device according to an embodiment of the present application includes:

[0005] Bracket;

[0006] A UWB antenna, wherein the UWB antenna comprises at least two antenna units, wherein the antenna units are arranged on one side of the bracket, and a reflective layer is provided on the other side of the bracket;

[0007] At least a portion of the reflective layer is coupled to at least one of the at least two antenna elements.

[0008] Wherein, the electronic device further includes:

[0009] A shielding layer is arranged on a side of the reflective layer away from the bracket, the reflective layer includes a first reflective portion and a second reflective portion, the orthographic projection of the shielding layer on the reflective layer is located on the first reflective portion, and the second reflective portion is coupled with at least one of the at least two antenna units.

[0010] Wherein, the at least two antenna units include:

[0011] A first antenna unit, a second antenna unit, and a third antenna unit, wherein the second antenna unit is coupled to at least a portion of the reflective layer, and the second antenna unit is used to transmit and receive signals.

[0012] The second antenna unit includes a radiation plate and a branch, wherein the branch is arranged around the outer periphery of the radiation plate, and the branch is coupled to the radiation plate.

[0013] Wherein, the radiation sheet is provided with slots.

[0014] Wherein, the at least two antenna units further include:

[0015] A fourth antenna unit is used for transmitting and receiving signals.

[0016] Wherein, the electronic device further includes:

[0017] A frame, at least a portion of the frame serving as a radiator, and the radiator being coupled to the fourth antenna unit.

[0018] The operating frequency bands of the second antenna unit and the fourth antenna unit both include the 6.25 GHz-6.75 GHz frequency band and the 7.75 GHz-8.25 GHz frequency band.

[0019] At least one of the antenna units includes a radiation plate and a branch, wherein the branch is arranged around the outer periphery of the radiation plate, and the branch is coupled to the radiation plate.

[0020] At least one of the antenna units includes a radiation plate, and a slot is provided on the radiation plate.

[0021] Wherein, the electronic device further includes:

[0022] A mainboard is arranged on the other side of the bracket, and has a feeding point on the mainboard, and the feeding point is electrically connected to the antenna unit.

[0023] Wherein, the electronic device further includes:

[0024] The cover is arranged on one side of the bracket, and the antenna unit is located between the cover and the bracket.

[0025] Wherein, the electronic device further includes:

[0026] The display screen is arranged on the other side of the bracket, and the reflective layer is located between the display screen and the bracket.

[0027] In the electronic device of the embodiment of the present application, the UWB antenna includes at least two antenna units, the antenna unit is arranged on one side of the bracket, and a reflective layer is provided on the other side of the bracket. At least a portion of the reflective layer is coupled with at least one of the at least two antenna units, making full use of the space of the bracket. The antenna unit is arranged on one side of the bracket and the reflective layer is provided on the other side of the bracket. By coupling at least a portion of the reflective layer with at least one antenna unit, the radiation frequency band of the antenna can be increased, and the space occupied can be reduced. The reflective layer optimizes the radiation directivity of the antenna and improves the positioning performance of the UWB antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of an electronic device in an embodiment of the present application;

[0029] Figure 2 This is another structural diagram of the electronic device in the embodiment of the present application;

[0030] Figure 3 A schematic diagram of a setting of an antenna unit;

[0031] Figure 4 is another schematic diagram of the antenna unit;

[0032] Figure 5 A schematic diagram of the contact point settings;

[0033] Figure 6 A schematic diagram of the shielding layer setting;

[0034] Figure 7 A schematic diagram of a contact sheet setting;

[0035] Figure 8 Schematic diagram of the setting of the reflective layer and the shielding layer;

[0036] Figure 9 The isolation of the antenna with or without a shielding layer;

[0037] Figure 10 is the resonance curve of different antenna units;

[0038] Figure 11 It is another schematic diagram of the arrangement of the antenna unit;

[0039] Figure 12 This is another schematic diagram of the antenna unit configuration.

[0040] Reference numerals

[0041] Bracket 10;

[0042] Reflective layer 20; first reflective portion 21; second reflective portion 22;

[0043] Shielding layer 30;

[0044] First antenna unit 31; radiation plate 311; branch 312; slot 313;

[0045] Second antenna unit 32; radiation plate 321; branch 322; slot 323;

[0046] The third antenna unit 33; the radiation plate 331; the branch 332; the slot 333;

[0047] a fourth antenna unit 34;

[0048] Contact point 314; contact point 324; contact point 334; contact point 344;

[0049] Contact piece 315; contact piece 325; contact piece 335; contact piece 345;

[0050] Frame 40; radiator 41; insulating material 42;

[0051] Main board 50;

[0052] Cover 60;

[0053] Display screen 70. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0055] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of this application can be implemented in an order other than those illustrated or described herein. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0056] The following is combined with Figures 1 to 12 As shown, the electronic device provided in the embodiment of the present application is described in detail through specific embodiments and their application scenarios.

[0057] like Figures 3 to 12As shown, the electronic device of the embodiment of the present application includes: a bracket 10 and a UWB antenna, and the bracket 10 can be used to install the mainboard. The UWB antenna includes at least two antenna units, for example, the UWB antenna can include three antenna units, and the three antenna units can be distributed in an L shape. Positioning (including angle measurement and ranging functions) can be performed through the UWB antenna. The antenna unit is arranged on one side of the bracket 10, and a reflective layer 20 is provided on the other side of the bracket 10. The reflective layer 20 can reflect the signal and improve the radiation capability of the antenna. At least a portion of the reflective layer 20 is coupled with at least one of the at least two antenna units. For example, a portion of the reflective layer 20 can be coupled with the antenna unit for transmitting and receiving signals to increase the radiation frequency band of the antenna. The reflective layer 20 and the antenna unit can be made using the Laser Direct Structuring (LDS) process or the Printing Direct Structure (PDS) process, which is low-cost and has good performance. There is no restriction on the antenna type and polarization direction of the antenna unit, and they can be selected according to actual conditions.

[0058] In the electronic device of the embodiment of the present application, the space of the bracket is fully utilized, an antenna unit is set on one side of the bracket 10, and a reflective layer 20 is set on the other side of the bracket 10 to reduce the space occupied. By coupling at least part of the reflective layer 20 with at least one antenna unit, the radiation frequency band of the antenna can be increased, and the space occupied can be reduced. The reflective layer optimizes the radiation directivity of the antenna and improves the positioning performance of the UWB antenna.

[0059] In some embodiments, as Figures 6 to 8 As shown, the electronic device also includes a shielding layer 30, which is disposed on the side of the reflective layer 20 away from the bracket 10. The shielding layer 30 may be metal and may be spaced apart from the reflective layer 20. The reflective layer 20 includes a first reflective portion 21 and a second reflective portion 22. The orthographic projection of the shielding layer 30 on the reflective layer 20 is located on the first reflective portion 21, overlapping with the first reflective portion 21. The orthographic projection of the shielding layer 30 on the reflective layer 20 does not overlap with the second reflective portion 22. The second reflective portion 22 is coupled to at least one of the at least two antenna elements. The second reflective portion 22 can couple with the antenna element used for transmitting and receiving signals to increase the antenna's radiation frequency band. The shielding layer 30 can improve the isolation between the multiple antenna elements and reduce interference from other signals on the antenna elements. The interaction between the reflective layer 20 and the shielding layer 30 can improve the isolation of the UWB antenna elements and enhance antenna performance. The orthographic projection of the shielding layer 30 on the reflecting layer 20 overlaps with the first reflecting portion 21, and the orthographic projection of the shielding layer 30 on the reflecting layer 20 does not overlap with the second reflecting portion 22. The overlapping area is very close to the shielding layer 30 and is prone to high-frequency coupling to the ground. The non-overlapping area couples with the antenna unit to form resonance.

[0060] Alternatively, as Figures 3 to 5 、 Figure 11 and Figure 12 As shown, at least two antenna units include: a first antenna unit 31, a second antenna unit 32, and a third antenna unit 33. The second antenna unit 32 is coupled to at least part of the reflective layer 20. The second antenna unit 32 is used to transmit and receive signals. The second antenna unit 32 can be coupled to the second reflective portion 22 to increase the radiation frequency band of the antenna. The positioning function can be achieved by the first antenna unit 31, the second antenna unit 32, and the third antenna unit 33. The first antenna unit 31 and the third antenna unit 33 can be used to receive signals. The first antenna unit 31, the second antenna unit 32, and the third antenna unit 33 can choose to receive or transmit signals according to actual needs, and can also have the function of transmitting and receiving signals at the same time. The distance between the reflective layer 20 and the shielding layer 30 is very small. The distance between the reflective layer 20 and the shielding layer 30 can be 0.05mm-1.5mm, such as 0.1mm. Due to the very small distance between the reflective layer 20 and the shielding layer 30, high frequency and large area coupling are carried out. The electric field of the first antenna unit 31, the second antenna unit 32, and the third antenna unit 33 in the UWB antenna is bounded by the reflective layer 20. As shown Figure 9 As shown, a means there is no shielding layer, b means there is a shielding layer, such as Figure 9 As shown in the dotted box, the shielding layer 30 can improve the isolation between the first antenna unit 31 , the second antenna unit 32 , and the third antenna unit 33 , thereby reducing the mutual influence between them.

[0061] The antenna unit on one side of the bracket 10 can operate at a first resonant frequency, and the antenna on the other side of the bracket 10 can operate at a second resonant frequency. The first resonant frequency can be higher than the second resonant frequency, so the area of ​​a single antenna unit is small, and multiple antennas can be provided to provide positioning and ranging capabilities. The reflective layer 20 on the other side of the bracket 10 has a large area, and the area that does not overlap with the shielding layer 30 allows the second antenna unit 32 to simultaneously operate at the second resonant frequency. This allows the entire UWB antenna to occupy a small space, take into account more antenna frequency bands, and adapt to more application scenarios and the needs of alliance organizations.

[0062] In the embodiments of the present application, Figure 11 and Figure 12As shown, the second antenna unit 32 includes a radiating plate 321 and a branch 322. The branch 322 is arranged around the periphery of the radiating plate 321 and can have an L-shaped or U-shaped structure. The branch 322 is coupled to the radiating plate 321. The coupling between the branch 322 and the radiating plate 321 can adjust the antenna's directivity, increase the antenna's radiation frequency band, enable it to operate at the second resonant frequency, and improve the antenna's radiation capability. The first antenna unit 31, the second antenna unit 32, and the third antenna unit 33 can operate at the first resonant frequency.

[0063] Optionally, the radiating plate 321 is provided with slots 323, which may be one or more in number. The slots 323 may be straight, curved, arc-shaped, or zigzag-shaped. The radiating plate 321 may be rectangular, and the slots 323 may be U-shaped. The slots 323 may have a closed slot structure, enabling simultaneous operation at a first resonant frequency and a second resonant frequency, with the first resonant frequency being higher than the second resonant frequency. The slots 323 may extend along the edge of the radiating plate 321, or from the edge of the radiating plate 321 toward the interior of the slots 323. The specific shape and number of the slots 323 can be selected based on practical needs. For example, the radiating plate 321 may be rectangular, and the slots 323 may be elongated. A single edge of the radiating plate 321 may have multiple slots 323 spaced apart; alternatively, two opposing edge regions of the radiating plate 321 may have one or more slots 323 spaced apart. The slots 323 on the radiating plate 321 can be used to adjust the resonance of the antenna.

[0064] In some embodiments, as Figures 3 and 4 、 Figure 11 and Figure 12 As shown, the at least two antenna units further include: a fourth antenna unit 34, the fourth antenna unit 34 is used to send and receive signals, and the fourth antenna unit 34 can be used to measure distance.

[0065] In other embodiments, Figures 1 to 3 、 Figure 6 and Figure 7As shown, the electronic device further includes a frame 40, at least a portion of which serves as a radiator 41, which is coupled to the fourth antenna element 34. For example, frame 40 can be made of metal and have a quadrilateral shape. Frame 40 can include multiple spaced-apart sections. Frame 40 can have multiple notches, each filled with insulating material 42, which can be made of plastic or rubber. The notches divide frame 40 into multiple sections, and the fourth antenna element 34 can be positioned adjacent to the insulating material 42. Radiator 41 can be positioned adjacent to a corner of frame 40, serving as the radiator and coupling to the fourth antenna element 34. The coupling between radiator 41 and fourth antenna element 34 adjusts the antenna's directivity, directing the antenna pattern toward frame 40. This optimizes the antenna's directivity at the top or corners of the device.

[0066] The fourth antenna unit 34 can be set close to the radiator 41. The fourth antenna unit 34 is coupled with the radiator 41. The directivity of the antenna will be optimized at the top or corner area of ​​the device. At the same time, the second antenna unit 32 is reflected by the device motherboard and the floor, and the directivity will be concentrated to radiate outward from the cover of the device. The directivities of the two antennas can be complementary to a certain extent to enhance the multi-scenario usage experience of the UWB antenna, which can enhance the car key application experience in the alliance.

[0067] The first antenna unit 31, the second antenna unit 32, the third antenna unit 33 and the fourth antenna unit 34 may all be provided with vias, such as Figure 5 As shown, contact points 314, 324, 334, and 344 can be provided on the other side of the bracket 10, and the antenna unit can be electrically connected to the corresponding contact points through vias. The contact points do not contact the reflective layer 20, and a certain gap can be provided between the reflective layer 20 and the contact points to avoid the contact points. A combiner or RF switch can be added to the RF architecture to integrate the signals and connect them to the UWB IC chip.

[0068] The fourth antenna unit 34 can operate at the first resonant frequency and the second resonant frequency simultaneously, and the first resonant frequency is higher than the second resonant frequency. Figure 10 As shown, c1 can represent the first antenna unit 31, c2 can represent the second antenna unit 32, and c3 can represent the third antenna unit 33. It can be seen from the curve c2 that the reflective layer 20 and the second antenna unit 32 can form a coupling to operate at the first resonant frequency. The first resonant frequency can be higher than the second resonant frequency. In this way, the structural space of the equipment can be fully utilized, the antennas can be arranged reasonably, and the space occupied by the positioning antenna can be reduced. At the same time, multiple ranging antenna combinations can be obtained to enhance the experience of scene applications.

[0069] Optionally, the operating frequency bands of the second antenna unit 32 and the fourth antenna unit 34 both include the 6.25GHz-6.75GHz band and the 7.75GHz-8.25GHz band, so as to support multiple protocols, which can meet the needs of the alliance organization and reduce the antenna space.

[0070] In an embodiment of the present application, at least one antenna unit includes a radiation plate and a branch, the branch is arranged around the periphery of the radiation plate, and the branch is coupled to the radiation plate. Figures 3 and 4 、 Figure 11 and Figure 12 As shown, for example, the first antenna unit 31 includes a radiating plate 311 and a branch 312. The branch 312 is arranged around the periphery of the radiating plate 311 and is coupled to the radiating plate 311. The branch 312 can be L-shaped and can extend around a corner of the radiating plate 311. The third antenna unit 33 includes a radiating plate 331 and a branch 332. The branch 332 is arranged around the periphery of the radiating plate 331 and is coupled to the radiating plate 331. The branch 332 can be L-shaped and can extend around a corner of the radiating plate 331. Through the coupling of the branch and the radiating plate, the directivity of the antenna can be adjusted so that the UWB antenna obtains a better signal phase difference of arrival (PDOA) characteristic, which can increase the radiation frequency band of the antenna and improve the radiation capability of the antenna.

[0071] Optionally, at least one antenna unit includes a radiation plate, and a slot is provided on the radiation plate. Figures 3 and 4 、 Figure 11 and Figure 12 As shown, for example, the first antenna unit 31 includes a radiating plate 311, which is provided with a slot 313. The radiating plate 311 can be rectangular, and the slot 313 can be in the shape of an elongated strip. One side edge region of the radiating plate 311 can have one or more slots 313, and the antenna resonance can be adjusted by the slots 313. The third antenna unit 33 includes a radiating plate 331, which is provided with a slot 333. The radiating plate 331 can be rectangular, and the slot 333 can be in the shape of an elongated strip. One or more slots 333 can be provided on opposite side edge regions of the radiating plate 331, and the antenna resonance can be adjusted by the slots 333.

[0072] Alternatively, as Figures 6 and 7As shown, the electronic device further includes: a mainboard 50, which is disposed on the other side of the bracket 10. The mainboard 50 can be disposed on the side of the shielding layer 30 away from the bracket 10. The mainboard 50 has a feeding point, which is electrically connected to the antenna unit, and the antenna unit can be fed through the mainboard 50. The feeding point can be connected to a contact piece. The mainboard 50 can be provided with multiple contact pieces, which can be spring pieces. The mainboard 50 can be provided with contact pieces 315, contact pieces 325, contact pieces 335, and contact pieces 345. The contact piece 315 can be connected to the contact point 314, the contact piece 325 can be connected to the contact point 324, the contact piece 335 can be connected to the contact point 334, and the contact piece 345 can be connected to the contact point 344, so that the mainboard 50 can feed the antenna unit.

[0073] Alternatively, as Figure 2 As shown, the electronic device may further include: a cover 60, which is disposed on one side of the bracket 10 and can be connected to the bracket 10. The cover 60 may be a battery cover, and the antenna unit is located between the cover 60 and the bracket 10. The antenna unit may radiate toward the cover 60. Multiple camera modules may be disposed on the cover 60.

[0074] Alternatively, as Figure 1 As shown, the electronic device further includes a display screen 70, which is disposed on the other side of the bracket 10 and can be connected to the bracket 10. The display screen 70 can be disposed on a side of the mainboard 50 away from the shielding layer 30, and the reflective layer 20 is located between the display screen 70 and the bracket 10. The display screen 70 can be a touch screen that incorporates capacitive touch electrodes or can be insensitive to touch.

[0075] Electronic devices may be provided with wireless circuitry, sometimes referred to as wireless communication circuitry, which may be used to support wireless communications in multiple wireless communication frequency bands. The communication frequency bands handled by the wireless communication circuitry may include satellite navigation system communication bands, cellular telephone communication bands, wireless local area network communication bands, near-field communication bands, ultra-wideband communication bands, or other wireless communication bands. The electronic device may be a portable electronic device or other suitable electronic device, such as a mobile phone, tablet, computer, wearable device, etc.

[0076] 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 this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An electronic device, characterized in that: include: Bracket; A UWB antenna, wherein the UWB antenna comprises at least two antenna units, wherein the antenna units are arranged on one side of the bracket, and a reflective layer is provided on the other side of the bracket; At least a portion of the reflective layer is coupled to at least one of the at least two antenna elements; Also includes: A shielding layer, wherein the shielding layer is arranged on a side of the reflecting layer away from the bracket, the reflecting layer and the shielding layer are spaced apart, the reflecting layer includes a first reflecting portion and a second reflecting portion, the orthographic projection of the shielding layer on the reflecting layer is located on the first reflecting portion, the orthographic projection of the shielding layer on the reflecting layer overlaps with the first reflecting portion, the orthographic projection of the shielding layer on the reflecting layer does not overlap with the second reflecting portion, and the second reflecting portion is coupled to at least one of the at least two antenna units.

2. The electronic device according to claim 1, wherein The at least two antenna units include: A first antenna unit, a second antenna unit, and a third antenna unit, wherein the second antenna unit is coupled to at least a portion of the reflective layer, and the second antenna unit is used to transmit and receive signals.

3. The electronic device according to claim 2, wherein: The second antenna unit includes a radiation plate and a branch, wherein the branch is arranged around the outer periphery of the radiation plate and is coupled to the radiation plate.

4. The electronic device according to claim 3, wherein: The radiation piece is provided with slots.

5. The electronic device according to claim 2, wherein: The at least two antenna units further include: A fourth antenna unit is used for transmitting and receiving signals.

6. The electronic device according to claim 5, characterized in that Also includes: A frame, at least a portion of the frame serving as a radiator, and the radiator being coupled to the fourth antenna unit.

7. The electronic device according to claim 5, wherein: The operating frequency bands of the second antenna unit and the fourth antenna unit both include the 6.25 GHz-6.75 GHz frequency band and the 7.75 GHz-8.25 GHz frequency band.

8. The electronic device according to claim 1, wherein: At least one of the antenna units includes a radiation plate and a branch, wherein the branch is arranged around the outer periphery of the radiation plate, and the branch is coupled to the radiation plate.

9. The electronic device according to claim 1, wherein: At least one of the antenna units includes a radiation plate, and a slot is provided on the radiation plate.

10. The electronic device according to claim 1, wherein Also includes: A mainboard is arranged on the other side of the bracket, and has a feeding point on the mainboard, and the feeding point is electrically connected to the antenna unit.

11. The electronic device according to claim 1, wherein Also includes: The cover is arranged on one side of the bracket, and the antenna unit is located between the cover and the bracket.

12. The electronic device according to claim 1, wherein: Also includes: The display screen is arranged on the other side of the bracket, and the reflective layer is located between the display screen and the bracket.

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