Electronic devices

Abstract

An embodiment of the present application discloses an electronic device, comprising: a housing, a first absorbing structure layer and a UWB antenna module; wherein the first absorbing structure layer is paved on a first inner wall of the housing, and the first absorbing structure layer has an opening; the UWB antenna module is arranged in the electronic device and is arranged opposite to the opening so that the UWB antenna module radiates a UWB signal through the opening.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to an electronic device. Background Art

[0002] In actual applications, UWB antenna modules are all arranged inside the housing of electronic equipment, and the UWB antenna modules need to pass through the housing of the electronic equipment to receive / transmit electromagnetic wave signals.

[0003] From the perspective of impedance, the housing of an electronic device can be divided into multiple layers with different impedance values. When the above electromagnetic wave signal propagates from one layer of the housing of an electronic device to another layer, due to the change in impedance value, part of the energy in the electromagnetic wave will be reflected back. In this way, part of the reflected energy excites the surface waves in the housing of the electronic device, and the surface waves will generate radiation when they propagate to the discontinuity point. The generated radiation will be superimposed on the radiation of the electromagnetic wave signal in space, causing the radiation pattern of the UWB antenna module to be distorted. Summary of the invention

[0004] An embodiment of the present application provides an electronic device.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] An electronic device is provided, comprising: a housing, a first wave absorbing structure layer and a UWB antenna module; wherein:

[0007] The first inner wall of the housing is paved with the first wave absorbing structure layer; the first wave absorbing structure layer has an opening;

[0008] The UWB antenna module is disposed in the electronic device and is disposed opposite to the opening so that the UWB antenna module radiates a UWB signal through the opening.

[0009] Optionally, the electronic device further includes a circuit board, the UWB antenna module is arranged on the circuit board, and a projection area formed by the UWB antenna module projected on the first inner wall is smaller than or equal to an area formed by the opening on the first inner wall.

[0010] Optionally, the electronic device further comprises a second wave absorbing structure layer;

[0011] The second absorbing structure layer is laid on the side surface of the UWB antenna module; the side surface refers to the side of the UWB antenna module that is bent and connected to the signal transmitting surface.

[0012] Optionally, the electronic device further comprises an antenna bracket and a third wave absorbing structure layer; the antenna bracket is used to support the UWB antenna module;

[0013] The UWB antenna module is fixedly connected to the antenna bracket;

[0014] The third absorbing structure layer is laid on the surface where the antenna bracket is connected to the UWB antenna module.

[0015] Optionally, the electronic device further comprises a fourth wave absorbing structure layer;

[0016] The fourth absorbing structure layer is laid on the outer surface of at least one target device; the target device is a device arranged within a preset range from the UWB antenna module.

[0017] Optionally, the electronic device further comprises a fifth wave absorbing structure layer;

[0018] The fifth absorbing structure layer is arranged in a target area on the first surface of the circuit board; the first surface is the surface of the circuit board where the UWB antenna module is arranged, and the target area is an area where no device is arranged.

[0019] Optionally, the UWB antenna module includes at least two UWB antennas; the UWB antenna module is used to receive / transmit signals through the at least two UWB antennas; and the at least two UWB antennas are arranged corresponding to the opening.

[0020] Optionally, the first absorbing structure layer has at least two openings, and each UWB antenna is arranged corresponding to one opening.

[0021] Optionally, the electronic device further includes a processor;

[0022] The processor is electrically connected to the UWB antenna module;

[0023] The processor is used to receive the positioning signal sent by the transmitter through the at least two antennas, obtain at least two signals to be processed, and determine the angle between the electronic device and the transmitter based on the at least two signals to be processed.

[0024] Optionally, the first absorbing structure layer is composed of an absorbing material layer and / or a resistive film.

[0025] The electronic device provided in the embodiment of the present application includes a housing, a first absorbing structure layer and a UWB antenna module; the first inner wall of the housing is provided with the first absorbing structure layer; the first absorbing structure layer has an opening; the UWB antenna module is arranged in the electronic device and arranged relative to the opening so that the UWB antenna module radiates UWB signals through the opening. In this way, by laying a layer of absorbing structure layer on the housing, the surface waves generated on the housing are absorbed, thereby reducing the zero point of the radiation pattern of the UWB antenna module, so that the radiation pattern of the UWB antenna module becomes flat within the main radiation range. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of an electronic device in the related technology provided by an embodiment of the present application;

[0027] Figure 2 A schematic diagram of a cross-sectional structure of an electronic device provided in an embodiment of the present application Figure 1 ;

[0028] Figure 3 A schematic top view of an electronic device structure provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of an exemplary multipath effect on a received signal provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of a cross-sectional structure of an electronic device provided in an embodiment of the present application Figure 2 ;

[0031] Figure 6 A schematic diagram of a cross-sectional structure of an electronic device provided in an embodiment of the present application Figure 3 ;

[0032] Figure 7 A schematic diagram of a cross-sectional structure of an electronic device provided in an embodiment of the present application Figure 4 ;

[0033] Figure 8 A schematic diagram of a cross-sectional structure of an electronic device provided in an embodiment of the present application Figure 5 ;

[0034] Figure 9-1 A schematic diagram of the radiation direction of an electronic device in the related art provided in an embodiment of the present application;

[0035] Figure 9-2 A schematic diagram of the radiation direction of an electronic device provided in an embodiment of the present application;

[0036] Fig.10 A schematic diagram of a UWB ranging principle provided in an embodiment of the present application;

[0037] Fig.11 A schematic diagram of an electronic device antenna arrangement in a related technology provided in an embodiment of the present application;

[0038] Figure 12-1 A schematic diagram of a PDOA curve measured by an electronic device provided by a related technology provided in an embodiment of the present application;

[0039] Figure 12-2A schematic diagram of a PDOA curve measured using an electronic device provided in an embodiment of the present application is provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present invention.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0042] In the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. The step numbers in this application are for example only and may correspond to different implementation methods. Their order is not limited unless there is a conflict. The technical features in the embodiments and implementation methods provided in this application can be combined with each other unless there is a conflict.

[0043] refer to Figure 1 The schematic diagram of the structure of the electronic device in the related art shown in the figure, the electronic device in the related art includes a housing 11, a UWB antenna module 12 and a printed circuit board (PCB) 13. Specifically, when the UWB antenna module 12 transmits an electromagnetic wave signal, the electromagnetic wave signal will pass through the housing 11 and radiate into the external environment. When the electromagnetic wave signal propagates from the housing 11, due to the change in impedance value, part of the energy of the electromagnetic wave signal will be reflected back to generate a reflected wave. Furthermore, the reflected wave will excite the surface wave of the housing 11, and the surface wave will generate radiation when it propagates to the discontinuous point of the housing 11. The radiation energy is superimposed on the vector signal radiated by the antenna in space, which will cause the radiation pattern to be distorted.

[0044] Based on this, an embodiment of the present application provides an electronic device, which includes: a housing, a first absorbing structure layer and a UWB antenna module; wherein the first inner wall of the housing is paved with the first absorbing structure layer, and the first absorbing structure layer has an opening; the UWB antenna module is arranged in the electronic device and arranged opposite to the opening. In this way, by laying a layer of absorbing structure layer on the housing, the surface waves generated on the housing are absorbed, thereby reducing the zero point of the radiation pattern, so that the radiation pattern of the UWB antenna module becomes flat within the main radiation range.

[0045] The antenna structure provided in the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0046] refer to Figure 2 A schematic diagram of the structure of an electronic device shown Figure 1 , an embodiment of the present application provides an electronic device.

[0047] The electronic device provided in the embodiment of the present application may be a wireless communication device, where the wireless communication device may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The wireless communication device may communicate with one or more core networks via a wireless access network (e.g., RAN, Radio Access Network). The wireless communication device may be a mobile terminal, such as a mobile phone (or "cellular" phone), a wearable device, or a computer with a mobile terminal, etc. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. A wireless communication device may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment.

[0048] refer to Figure 2 The cross-sectional structure of the electronic device shown is shown Figure 1 The electronic device provided in the embodiment of the present application may include: a housing 201, a first wave absorbing structure layer 202 and a UWB antenna module 203; wherein,

[0049] A first wave absorbing structure layer 202 is laid on the first inner wall of the housing 201, and the first wave absorbing structure layer 202 has an opening;

[0050] The UWB antenna module 203 is disposed in the electronic device and is disposed opposite to the opening, so that the UWB antenna module radiates UWB signals through the opening.

[0051] In the embodiment provided in the present application, the housing 201 may be a rear housing of an electronic device, which is used to protect the components inside the electronic device. The UWB antenna module 203 is disposed inside the housing 201 of the electronic device. The signal transmitting surface of the UWB antenna module 203 is opposite to the first inner wall of the housing 201. In other words, the UWB signal transmitted by the UWB antenna module 203 can pass through the first inner wall of the housing 201 and be transmitted to the external environment of the electronic device.

[0052] Among them, UWB refers to ultra-wideband, and UEB technology is a new type of wireless communication technology. UWB technology is a wireless carrier communication technology that uses a frequency bandwidth of more than 1GHz. It uses nanosecond non-sinusoidal narrow pulses to transmit data, and the impulse pulse has a high positioning accuracy. With UWB technology, it is easy to combine positioning and communication, which is difficult for conventional radio to do. It has the advantages of low system complexity, low power spectrum density of transmitted signals, insensitivity to channel fading, low interception capability, and high positioning accuracy. It is especially suitable for high-speed wireless access in dense multipath places such as indoors. In practical applications, UWB signals have extremely strong penetration capabilities and can be accurately positioned indoors and underground, with a positioning accuracy of up to centimeters.

[0053] Here, in the embodiment provided by the present application, a first absorbing structural layer 202 is provided on the first inner wall of the housing 201. The so-called absorbing structural layer refers to a structure that can absorb or significantly reduce the electromagnetic wave energy received on its surface, thereby reducing electromagnetic wave interference. It can be understood that the first absorbing structural layer 202 can absorb other stray signals such as surface waves on the first inner wall of the housing 201, thereby reducing cross-polarization.

[0054] Here, the first absorbing structure layer 202 may be made of absorbing material or a resistive film.

[0055] The absorbing material may be a carbon-based absorbing material, such as graphene, graphite, carbon black, carbon fiber, carbon nanotubes, etc.; or an iron-based absorbing material, such as ferrite, magnetic iron nanomaterials, etc.; or a ceramic-based absorbing material, such as silicon carbide; or other types of materials, such as conductive polymers, plasma materials, etc. The embodiment of the present application does not limit the type of absorbing material.

[0056] In addition, the resistive film is a structure that can be used to absorb electromagnetic waves and is made by evaporating a material with a certain resistivity onto the surface of an insulating material using a method similar to evaporation.

[0057] In the embodiment provided in the present application, the first absorbing structure layer 202 may be coated on the first inner wall of the housing 201, or bonded to the first inner wall of the housing 201 by an adhesive material, which is not limited in the embodiment of the present application.

[0058] Furthermore, the first absorbing structure layer 202 in the embodiment of the present application has an opening, and the opening is arranged opposite to the UWB antenna module 203, that is, the signal transmission surface of the UWB antenna module 203 can be opposite to the opening. In this way, the UWB antenna module 203 can radiate UWB signals outward through the opening.

[0059] It is understandable that the first absorbing structure layer 202 can absorb electromagnetic waves outside the main radiation direction of the UWB antenna module 203 and surface wave stray signals generated by the electromagnetic wave signals radiated by the UWB antenna module 203 .

[0060] In the embodiment provided in the present application, the shape of the openings on the first absorbing structure layer 202 can be a positive direction, a rectangle, or an irregular shape, which is not limited in the embodiment of the present application.

[0061] In an optional embodiment, the shape of the opening may be the same as the projection shape of the UWB antenna module 203 on the first inner wall.

[0062] It can be seen that the electronic device provided in the embodiment of the present application may include: a housing 201, a first absorbing structure layer 202 and a UWB antenna module 203; specifically, the first inner wall of the housing 201 is paved with the first absorbing structure layer 202, and the first absorbing structure layer 202 has an opening; the UWB antenna module 203 is arranged inside the electronic device, and the UWB antenna module is arranged relative to the opening so that the UWB antenna module radiates the UWB signal through the opening. In this way, by laying a layer of absorbing structure layer on the housing 201, the surface waves generated on the housing 201 are absorbed, thereby reducing the zero point of the directional pattern, so that the radiation directional pattern of the UWB antenna module 203 becomes flat within the main radiation range.

[0063] In an embodiment of the present application, the electronic device further includes a circuit board 204 , and the UWB antenna module 203 is disposed on the circuit board 204 .

[0064] Here, the circuit board may be a PCB board. The circuit board 204 may be arranged in parallel with the housing 201 , and a first surface of the circuit board 204 is opposite to the housing 201 .

[0065] In practical applications, the circuit board 204 is composed of an insulating base plate, connecting wires and pads for assembling and welding electronic components, and has the dual functions of a conductive line and an insulating base plate. It can replace complex wiring and realize the electrical connection between various components in the circuit, which not only simplifies the assembly and welding of electronic products, reduces the wiring workload under traditional methods, and greatly reduces the labor intensity of workers; but also reduces the size of the whole machine, reduces product costs, and improves the quality and reliability of electronic equipment.

[0066] In the embodiment provided in the present application, the UWB antenna module 203 can be soldered on the first surface of the circuit board 204. The signal transmission surface of the UWB antenna module 203 is opposite to the first inner wall of the housing 201. In other words, the UWB signal transmitted by the UWB antenna module 203 can pass through the first inner wall of the housing 201 and be transmitted to the external environment of the electronic device.

[0067] In a possible implementation, the UWB antenna module 203 may be electrically connected to the circuit board 204. In addition, a radio frequency processor may be provided on the circuit board 204. In this way, the UWB antenna module 203 may be connected to the radio frequency processor via a wire soldered on the circuit board 204. Based on this, the UWB antenna module 203 may receive or transmit UWB signals under the control of the radio frequency processor.

[0068] In addition, the projection area formed by the UWB antenna module 203 projected on the first inner wall is smaller than or equal to the area formed by the opening on the first inner wall.

[0069] That is to say, reference Figure 3 In the schematic top view of the electronic device structure shown in the embodiment of the present application, the opening size of the first absorbing structure layer 202 is larger than the size of the UWB antenna module 203. In this way, it can be ensured that the electromagnetic wave energy in the main radiation direction of the UWB antenna module 203 can pass through the first inner wall of the housing 201 and be transmitted to the outside of the electronic device. The first absorbing structure layer 202 can absorb the UWB signal outside the main radiation direction of the UWB antenna module 203, as well as the surface wave spurious signal generated by the UWB antenna module 203 radiating the UWB signal, thereby reducing the zero point of the directional pattern, so that the radiation pattern of the UWB antenna module 203 becomes flat within the main radiation range.

[0070] In practical applications, the UWB signal emitted by the UWB antenna module 203 may cause surface waves on the circuit board 204 in addition to the surface waves on the housing 201. In addition, when the UWB antenna module 203 receives the UWB signal, since the UWB signal propagates through different paths, the time at which each signal component reaches the UWB antenna module is different, and the phases of different signal components affect each other, causing interference and multipath effects, resulting in phase errors of the received signal, thereby affecting the accuracy of UWB positioning.

[0071] refer to Figure 4 The schematic diagram of the influence of multipath effect on the received signal is shown. As shown in the figure, S is the direct wave signal and S' is the multipath wave signal. Specifically, the direct wave signal S is expressed by formula (1-1):

[0072] S = U cosωt (1-1);

[0073] Among them, U is the voltage strength of the signal and ω is the carrier frequency.

[0074] The multipath wave signal S' is expressed by formula (1-2):

[0075]

[0076] Among them, α is the ratio of multipath signal strength to direct signal strength, is the phase shift.

[0077] Furthermore, the direct wave signal S and the multipath wave signal S' are superimposed to obtain the signal S t Among them, S t It can be expressed by formula (1-3).

[0078] S t =S+S'=βUcos(ωt+φ) (1-3);

[0079] Then, the term φ in formula (1-3) is Derivative. When the derivative function value is 0, we can get That is, the maximum phase error caused by multipath effect can be

[0080] Based on this, considering the influence of the surface wave of the circuit board and the multipath effect on the UWB positioning accuracy, in one embodiment of the present application, reference is made to Figure 5 The cross-sectional structure of the electronic device shown Figure 2 The electronic device also includes a second absorbing structure layer 205 .

[0081] Specifically, the second absorbing structure layer 205 is laid on the side surface of the UWB antenna module 203 ; the side surface here refers to the side surface of the UWB antenna module 203 that is bent and connected to the signal transmission surface.

[0082] It is understandable that the UWB antenna module 203 is a non-planar structure, and the UWB antenna module 203 includes a side surface that is bent and connected to the signal transmission surface in addition to the signal transmission surface and the surface connected to the circuit board 204. The second absorbing structure layer 205 can be laid on the side surface of the UWB antenna module 203. In other words, the second absorbing structure layer 205 is wrapped around the UWB antenna module 203, which absorbs the stray signals around the UWB antenna module 203 on the one hand, and absorbs the cross-polarization signals on the other hand to reduce the influence of the multipath effect.

[0083] In the embodiment provided in the present application, the second absorbing structure layer 205 can be composed of an absorbing material layer and / or a resistive film. The material composition structure of the second absorbing structure layer 205 and the first absorbing structure layer 202 is the same or different, and the embodiment of the present application does not limit this.

[0084] It can be seen that the electronic device provided in the embodiment of the present application, in addition to setting an absorbing structure layer on the first inner wall of the shell 201, can also wrap a circle of absorbing structure layer around the UWB antenna module 203. The absorbing structure layer absorbs stray signals such as surface waves around the UWB antenna module 203, suppresses cross polarization, and reduces the influence of multipath effects, thereby making the radiation pattern of the UWB antenna module flat within the main radiation range.

[0085] In one embodiment of the present application, refer to Figure 6 The cross-sectional structure of the electronic device shown Figure 3 The electronic device provided in the embodiment of the present application may further include an antenna bracket 206 and a third absorbing structure layer 207 .

[0086] Specifically, the antenna bracket 206 is used to support the UWB antenna module 203 ; the UWB antenna module 203 is fixedly connected to the antenna bracket 206 ; the third absorbing structure layer 207 is laid on the surface where the antenna bracket 206 and the UWB antenna module 203 are connected.

[0087] In a possible implementation, the UWB antenna module 203 is fixedly connected to a first side of the antenna bracket 206 , and a second side of the antenna bracket 206 is fixedly connected to the circuit board 204 .

[0088] It is understandable that in the embodiment provided in the present application, the UWB antenna module 203 can be supported by the antenna bracket 206. The antenna bracket 206 can be connected to the UWB antenna module 203, so the reflected wave generated by the UWB signal transmitted by the UWB antenna module 203 may also cause the surface wave of the antenna bracket 206, affecting the radiation pattern of the UWB antenna module 204; in addition, a multipath effect may also be generated, affecting the positioning accuracy of the UWB antenna module.

[0089] In this way, an absorbing structure layer is provided on the side where the antenna support 206 is connected to the UWB antenna module 203 to absorb the surface waves on the antenna support 206 and the reflected waves of the UWB signal. On the one hand, it absorbs the stray signals around the UWB antenna module 203, and on the other hand, it absorbs the cross-polarization signals to reduce the influence of the multipath effect.

[0090] In the embodiment provided in the present application, the third absorbing structure layer 207 may be composed of an absorbing material layer and / or a resistive film. The third absorbing structure layer 207 may be the same as or different from the first absorbing structure layer 204 and the second absorbing structure layer 205 in terms of material composition, which is not limited in the embodiment of the present application.

[0091] It can be seen that the embodiment of the present application can set a third absorbing structure layer 207 on the antenna bracket 206 to absorb the surface waves on the antenna bracket 206. Specifically, the third absorbing structure layer 207 can be set on the surface of the side of the antenna bracket 206 connected to the UWB antenna module 204. In this way, the third absorbing structure layer 207 absorbs the surface waves on the antenna bracket 206, thereby reducing the zero point of the radiation pattern of the UWB antenna module 204, so that the radiation pattern of the UWB antenna module 204 becomes flat within the main radiation range; and the third absorbing structure layer 207 can absorb the cross-polarization signal on the antenna bracket 206 to reduce the influence of the multipath effect.

[0092] Based on the above embodiments, reference Figure 7 The cross-sectional structure of the electronic device shown Figure 4 In another embodiment of the present application, the electronic device further includes a fourth absorbing structure layer 208;

[0093] Specifically, the fourth absorbing structure layer 208 is laid on the outer surface of at least one target device 209, wherein the target device 209 is a device disposed within a preset range from the UWB antenna module 203. It is understandable that the absorbing structure layer can also be laid on the outer surface of the target device 209 located around the UWB antenna module 203 to absorb the surface waves generated on the surface of the target device 209 and the reflected waves of the UWB signal.

[0094] Here, the target device 209 may be a battery assembly, a microphone assembly, a camera assembly, etc., which is not limited in this embodiment of the present application.

[0095] In the embodiment provided in the present application, the fourth absorbing structure layer 208 may be composed of an absorbing material layer and / or a resistive film. The fourth absorbing structure layer 208 may be the same or different from the material composition structure of the first absorbing structure layer 202, the second absorbing structure layer 205, and the third absorbing structure layer 207, which is not limited in the embodiment of the present application. In addition, the fourth absorbing structure layer 208 may absorb the cross-polarization signal on the target device 209 to reduce the influence of the multipath effect.

[0096] It can be seen that the embodiment of the present application can lay an absorbing structure layer on the surface of the target device 209 near the UWB antenna module 203 to absorb the surface waves on the target device, thereby reducing the zero point of the radiation pattern of the UWB antenna module 203, so that the radiation pattern of the UWB antenna module 203 becomes flat within the main radiation range. In addition, the fourth absorbing structure layer 208 can absorb the cross-polarization signal on the target device 209 to reduce the impact of the multipath effect.

[0097] Based on the above embodiments, reference Figure 8 The cross-sectional structure of the electronic device shown Figure 5 In another embodiment of the present application, the electronic device further includes a fifth absorbing structure layer 210;

[0098] Specifically, the fifth absorbing structure layer 210 is disposed in a target area on the first surface of the circuit board 204; here, the first surface is the surface of the circuit board 204 where the UWB antenna module is disposed, and the target area is an area where no device is disposed.

[0099] In practical applications, the area of ​​the circuit board 204 is relatively large, and under the action of the UWB signal, it is also easy to generate surface waves and multipath effects, which affect the radiation pattern of the UWB antenna module 203. Based on this, in the embodiment of the present application, an absorbing structure layer can be laid on the first surface of the circuit board 204. Specifically, a fifth absorbing material layer 210 can be laid on the area of ​​the first surface of the circuit board 204 where no device is set, so as to absorb the surface waves generated on the circuit board 204.

[0100] In the embodiment provided in the present application, the fifth absorbing structure layer 210 may be composed of an absorbing material layer and / or a resistive film. The fifth absorbing structure layer 210 may be the same as or different from the material composition structure of the first absorbing structure layer 202, the second absorbing structure layer 205, the third absorbing structure layer 207, and the fourth absorbing structure layer 208, which is not limited in the embodiment of the present application.

[0101] In summary, an absorbing structure layer can be set at a position where a surface wave may be generated in an electronic device, and the absorbing structure layer can suppress other stray signals such as surface waves, thereby suppressing cross polarization, so that the radiation pattern of the UWB antenna module 203 becomes flat within the main radiation range. In addition, the fifth absorbing structure layer 210 can absorb the cross-polarization signal on its surface to reduce the influence of the multipath effect.

[0102] refer to Figure 9-1 The related art shown provides an electronic device antenna radiation pattern, and Figure 9-2 The antenna radiation pattern of the electronic device provided in the embodiment of the present application is shown; wherein, Figure 9-1 and Figure 9-2 Specifically, it can represent the radiation efficiency around the electronic device when the electronic device is at the pole of the polar coordinates, and the unit of radiation efficiency is dB.

[0103] contrast Figure 9-1 and Figure 9-2 It can be found that compared with the electronic device in the prior art, the electronic device provided by the embodiment of the present application has significantly fewer zero points in the radiation pattern, and the change in radiation efficiency is relatively gentle. It can be seen that the electronic device provided by the embodiment of the present application can improve the antenna radiation pattern and improve the communication performance of the antenna.

[0104] Based on the above embodiments, in the embodiments provided in the present application, the UWB antenna module 203 may include at least two UWB antennas. The UWB antenna module 203 is used to receive / transmit signals through at least two UWB antennas; the at least two UWB antennas are arranged corresponding to the openings.

[0105] In a possible implementation, at least two UWB antennas share the same opening, that is, the opening size of the first absorbing structure layer 202 may match the size of the at least two UWB antennas.

[0106] In another possible implementation, the first absorbing structure layer 202 may have at least two openings, and each UWB antenna is disposed corresponding to one opening.

[0107] In practical applications, the UWB antenna module 203 can use the Phase Difference of Arrival (PDOA) algorithm to calculate the relative angle and distance between two objects to locate the object. Specifically, if there are more than two antennas on the object, the angle and distance of the object from itself can be identified based on the difference in phase when the two antennas receive the same signal.

[0108] In a possible implementation, the electronic device provided in the embodiment of the present application can be used to improve the accuracy of the UWB arrival angle. That is, by loading a layer of absorbing material or resistive film on the housing of the electronic device to absorb the surface waves on the battery cover, the zero point of the antenna pattern caused by the loading of the battery cover is reduced, so that the antenna pattern becomes flat within the main radiation range, thereby improving the angle measurement accuracy of the UWB antenna.

[0109] Specifically, the electronic device provided in the embodiment of the present application may further include a processor. The processor here may be a radio frequency processor or a CPU. The processor may be soldered on a PCB.

[0110] Wherein, the processor may be electrically connected to the UWB antenna module 203;

[0111] The processor is used to receive the positioning signal sent by the transmitter through at least two antennas, obtain at least two signals to be processed, and determine the angle between the electronic device and the transmitter based on the at least two signals to be processed.

[0112] It is understandable that the electronic device in the embodiment of the present application can use the PDOA algorithm to determine the relative angle between it and the transmitter. Specifically, the electronic device can receive a positioning signal sent by the transmitter through the at least two antennas mentioned above to obtain at least two different signals to be processed; wherein one signal to be processed corresponds to one antenna. In this way, the processor can calculate the angle of the electronic device relative to the transmitter through the phase difference of at least two received signals.

[0113] The following is a detailed description of the UWB positioning principle. For example, refer to Fig.10 The schematic diagram of the UWB positioning principle is shown. The electronic device can be configured with two receiving antennas R1 and R2, and the distance between R1 and R2 is d. Here, d can be up to 18 mm.

[0114] The transmitter is equipped with a transmitting antenna T. The transmitter sends a UWB positioning signal to the electronic device through the transmitting antenna T. When the electronic device receives the UWB positioning signal sent by the transmitting antenna T through the receiving antenna R1 and the receiving antenna R2, the electronic device can measure the phase of the UWB positioning signal received by the receiving antenna R1 and the receiving antenna R2, thereby calculating the phase difference pdoa between the two. Furthermore, the path difference p between the transmitting antenna T and the receiving antenna R1 and the receiving antenna R2 is calculated through pdoa, and then the arrival angle α (that is, the angle of the transmitting end relative to the electronic device) is calculated according to formula (1-4) based on p and d.

[0115]

[0116] Exemplary, reference Fig.11The electronic device antenna arrangement schematic diagram shown in the figure, the electronic device provided in the embodiment of the present application may include three antennas, namely antenna 110, antenna 120 and antenna 130. Among them, antenna 110 and antenna 120 are located in the same straight line, and antenna 120 and antenna 130 are located in the same straight line. In this way, the electronic device can determine the angle with the transmitting end on the horizontal plane through antenna 110 and antenna 120, and determine the angle with the transmitting end on the vertical plane through antenna 120 and antenna 130. In this way, the three-dimensional angle between the electronic device and the transmitting end is determined.

[0117] refer to Figure 12-1 12-2 is a schematic diagram of the PDOA curve measured using an electronic device provided by the related technology, and 12-3 is a schematic diagram of the PDOA curve measured using an electronic device provided by an embodiment of the present application.

[0118] Figure 12-1 and Figure 12-2 The horizontal axis represents the angle between the electronic device and the transmitting end, and the vertical axis can represent the phase difference between the two antennas in the electronic device. It can be seen that when the electronic device provided by the relevant technology determines the angle, there will be two different phase differences corresponding to the same angle, which will cause the electronic device to misjudge. However, the angle determined by the electronic device provided by the present application changes smoothly with the phase difference, and one phase difference can accurately correspond to an arrival angle. It can be seen that the electronic device provided in the embodiment of the present application can reduce misjudgment and improve the UWB angle measurement accuracy of the antenna.

[0119] In summary, an embodiment of the present application provides an electronic device, which reduces the zero point of the antenna pattern caused by battery cover loading through surface waves on the electronic device, so that the antenna pattern becomes flat within the main radiation range, thereby improving the angle measurement accuracy of the UWB antenna.

[0120] In the several embodiments provided in the present application, it should be understood that the disclosed electronic device can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0121] It should be noted that the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0122] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: include: A housing, a first absorbing structure layer and an ultra-wideband UWB antenna module, a circuit board and a fifth absorbing structure layer, wherein the UWB antenna module is used to transmit electromagnetic wave signals; wherein, The first absorbing structure layer is provided on the first inner wall of the shell, and the first absorbing structure layer has an opening; the first absorbing structure layer is used to absorb the surface wave generated by the shell; wherein the surface wave generated by the shell is generated when the shell is excited by the reflected wave, and the reflected wave is generated when part of the energy of the electromagnetic wave signal is reflected when the impedance value of the shell changes; The UWB antenna module is arranged on the circuit board and is arranged opposite to the opening so that the UWB antenna module radiates UWB signals through the opening; wherein the projection area formed by the UWB antenna module projected on the first inner wall is smaller than or equal to the area formed by the opening on the first inner wall, so that the electromagnetic wave energy in the main radiation direction of the UWB antenna module passes through the first inner wall; The fifth absorbing structure layer is arranged in a target area on the first surface of the circuit board; the first surface is the surface of the circuit board on which the UWB antenna module is arranged, and the target area is an area where no devices are arranged; the fifth absorbing structure layer is used to absorb surface waves generated by the circuit board, and the surface waves generated by the circuit board are generated under the action of the electromagnetic wave signal emitted by the UWB antenna module.

2. The electronic device according to claim 1, characterized in that: Also includes a second wave absorbing structure layer; The second absorbing structure layer is laid on the side surface of the UWB antenna module; the side surface refers to the side of the UWB antenna module that is bent and connected to the signal transmitting surface.

3. The electronic device according to claim 1, characterized in that: It also includes an antenna bracket and a third wave absorbing structure layer; the antenna bracket is used to support the UWB antenna module; The UWB antenna module is fixedly connected to the antenna bracket; The third absorbing structure layer is laid on the surface where the antenna bracket is connected to the UWB antenna module.

4. The electronic device according to claim 1, characterized in that: Also includes a fourth wave absorbing structure layer; The fourth absorbing structure layer is laid on the outer surface of at least one target device; the target device is a device arranged within a preset range from the UWB antenna module.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The UWB antenna module includes at least two UWB antennas; the UWB antenna module is used to receive / transmit signals through the at least two UWB antennas; the at least two UWB antennas are arranged corresponding to the openings.

6. The electronic device according to claim 5, characterized in that: The first absorbing structure layer has at least two openings, and each UWB antenna is arranged corresponding to one opening.

7. The electronic device according to any one of claims 1 to 4, characterized in that: Also includes a processor; The processor is electrically connected to the UWB antenna module; The processor is used to receive the positioning signal sent by the transmitter through at least two antennas to obtain at least two signals to be processed, and determine the angle between the electronic device and the transmitter based on the at least two signals to be processed.

8. The electronic device according to any one of claims 1 to 4, characterized in that: The first wave-absorbing structural layer is composed of a wave-absorbing material layer and / or a resistance film.

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