Antenna assembly and electronic equipment

Abstract

The embodiment of the utility model provides an antenna assembly and electronic equipment, the antenna assembly comprises a soft board area and a hard board area, the two ends of the hard board area are respectively provided with two antenna branches, the two antenna branches are respectively connected with two hard board area microstrip lines, one end of the soft board area is fixedly connected with the middle area of the hard board area, and the other end of the soft board area is fixedly connected with the middle area of the hard board area. The antenna feed point is arranged at the other end of the soft board area and connected with the equipment mainboard through the board-to-board connector, two soft board area microstrip lines connected with the hard board area microstrip lines respectively are arranged in the soft board area, and the other ends of the soft board area microstrip lines are connected with the antenna feed point through impedance branches. According to the antenna assembly provided by the embodiment of the invention, the signals can be received through the plurality of antennas and the arrival angles of the antennas are calculated, so that the positioning accuracy and the system reliability are further improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an antenna assembly and an electronic equipment. Background Art

[0002] With the rapid development of smart devices and the Internet of Things (IoT), the market has put forward higher requirements for wireless communication technology, including lower latency, higher data transmission rate and better synchronization accuracy. Traditional wireless short-range communication technologies, such as Bluetooth and Wi-Fi, have limitations in latency, reliability, synchronization accuracy, etc., and cannot fully meet the needs of emerging applications. The research and development of the extreme miniaturization technology of UWB (ultra-wideband) antennas is to overcome the limitations of existing technologies and provide a new wireless short-range communication technology to meet the needs of modern smart devices for high-performance wireless communication technology.

[0003] However, as the space of smart devices becomes smaller and smaller, conventional antennas and materials have relatively high dielectric constants and loss tangents, which may affect antenna performance, high costs, and complex processing and manufacturing processes. At the same time, the antenna structure is limited, resulting in the selected antenna performance not meeting the requirements. In view of the antenna isotropic requirements, it is not easy to design the antenna with an isotropic radiation direction perpendicular to the substrate in the three-dimensional structure design, which limits the antenna design and cannot meet the use requirements of smart devices. Utility Model Content

[0004] The embodiments of the present application provide an antenna assembly and an electronic device, which adopt a dual-antenna system and can receive signals through multiple antennas and calculate their arrival angles, thereby further improving the positioning accuracy and system reliability.

[0005] An embodiment of the present application provides an antenna assembly, including:

[0006] A hard board area, two antenna branches are respectively arranged at two ends of the hard board area, and the two antenna branches are respectively connected to two hard board area microstrip lines;

[0007] A soft board area, one end of the soft board area is fixedly connected to the middle area of ​​the hard board area, an antenna feed point is arranged at the other end of the soft board area, the antenna feed point is connected to the device mainboard through a board-to-board connector, two soft board area microstrip lines respectively connected to the hard board area microstrip line are arranged in the soft board area, and the other end of the soft board area microstrip line is connected to the antenna feed point through an impedance branch.

[0008] Optionally, the microstrip line in the soft board area and the microstrip line in the hard board area are used to adjust the impedance of the antenna feed point, and the impedance branch is used to adjust the isolation and impedance.

[0009] Optionally, the hard board area further includes two coupling branches, and the two coupling branches are respectively arranged below the two antenna branches.

[0010] Optionally, the radiators of the two antenna branches extend in opposite directions respectively, and the two coupling branches are in an arc shape.

[0011] Optionally, one side of the hard board area includes a notch, and an LED light is arranged in the notch, and the LED light is used to light up and down according to the anti-interference performance of the antenna assembly.

[0012] Optionally, at least one positioning hole is provided on the hard board area so as to fix the antenna assembly on the device mainboard through the positioning hole, and an isolation wall is provided around the hard board area, and the isolation wall serves as a ground plane.

[0013] Optionally, the material of the soft board area is a modified polyimide or polytetrafluoroethylene or liquid crystal polymer with a dielectric constant of 3.0 and a loss factor of 0.001, and the hard board area and the soft board area are fixed by surface mounting or hot pressing welding.

[0014] Optionally, the antenna assembly is used to send and receive UWB signals, and the size of the antenna assembly is 26×9×2.5 mm.

[0015] An embodiment of the present application further provides an electronic device, the electronic device comprising a housing and an antenna assembly, the antenna assembly being located inside the housing, and the antenna assembly comprising:

[0016] A hard board area, two antenna branches are respectively arranged at two ends of the hard board area, and the two antenna branches are respectively connected to two hard board area microstrip lines;

[0017] A soft board area, one end of the soft board area is fixedly connected to the middle area of ​​the hard board area, an antenna feed point is arranged at the other end of the soft board area, two soft board area microstrip lines respectively connected to the hard board area microstrip line are arranged in the soft board area, the other end of the soft board area microstrip line is connected to the antenna feed point, and the soft board area microstrip line and the hard board area microstrip line are used to adjust the impedance of the antenna feed point.

[0018] Optionally, the shell includes a metal middle frame and a bottom shell, the metal middle frame forms a receiving space around the bottom shell, the antenna assembly is arranged in the receiving space, and the receiving space also includes an LTE antenna, a 5G antenna, an NFC antenna, at least one camera and a metal embedded area.

[0019] The antenna assembly and electronic device provided in the embodiment of the present application include a soft board area and a hard board area, two antenna branches are respectively arranged at the two ends of the hard board area, the two antenna branches are respectively connected to two hard board area microstrip lines, one end of the soft board area is fixedly connected to the middle area of ​​the hard board area, the antenna feed point is arranged at the other end on the soft board area, the antenna feed point is connected to the main board of the device through a board-to-board connector, two soft board area microstrip lines are arranged in the soft board area, which are respectively connected to the hard board area microstrip lines, and the other end of the soft board area microstrip line is connected to the antenna feed point through an impedance branch. The antenna assembly provided in the embodiment of the present application can receive signals through multiple antennas and calculate their arrival angles, further improving the accuracy of positioning and the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0022] Figure 2 A schematic diagram of the structure of the antenna assembly provided in an embodiment of the present application.

[0023] Figure 3 A schematic diagram of an application scenario of a UWB device provided in an embodiment of the present application.

[0024] Figure 4 Another structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0025] Figure 5 A schematic diagram of the structure of a smart door lock provided in an embodiment of the present application.

[0026] Figure 6 A schematic diagram of the structure of a remote control provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0028] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The embodiment of the present application provides a display screen assembly and an electronic device. The following will be described in detail. The display screen assembly can be arranged in the electronic device, and the electronic device can be a smart phone, a tablet computer, or other device.

[0031] refer to Figure 1 , Figure 1 This is a schematic diagram of the first structure of the electronic device 10 provided in an embodiment of the present application.

[0032] The electronic device 10 includes a display screen 11 , a housing 12 , a circuit board 13 and a battery 14 .

[0033] The display screen 11 is disposed on the housing 12 to form a display surface of the electronic device 10 for displaying images, texts, and other information. The display screen 11 may include a liquid crystal display (LCD) or an organic light-emitting diode display (OLED).

[0034] A cover plate may also be installed on the display screen 11 to cover the display screen 11. The cover plate may be a transparent glass cover plate so that the display screen can be displayed through the light-transmitting cover plate. In some embodiments, the cover plate may be a glass cover plate made of materials such as sapphire.

[0035] The display screen 11 may include a display area and a non-display area. The display area may be used to display the screen of the electronic device 10 or for the user to perform touch control, etc. The top area of ​​the non-display area is provided with openings for sound and light transmission, and the bottom of the non-display area may be provided with functional components such as a fingerprint module and a touch button.

[0036] It should be noted that the structure of the display screen 11 is not limited thereto. For example, the display screen 11 may be a full screen or a special-shaped screen. It should also be noted that in some embodiments, the display screen 11 may not include a non-display area, but may be set to a full-screen structure, and functional components such as a distance sensor and an ambient light sensor may be set below the display screen or at other locations. The cover plate is suitable for the size of the display screen.

[0037] The housing 12 is used to form the outer contour of the electronic device 10, so as to accommodate the electronic devices and functional components of the electronic device 10, and to seal and protect the electronic devices and functional components inside the electronic device. For example, the camera, circuit board, vibration motor and other functional components of the electronic device 10 can be arranged inside the housing 12.

[0038] The housing 12 may include a middle frame and a back cover, which are combined to form the housing 12, and the middle frame and the back cover may form a storage space to store components such as a circuit board 13, a display screen 11, and a battery 14. Further, a cover plate may be fixed to the housing 12, and the cover plate and the housing 12 form a closed space to accommodate components such as a circuit board 13, a display screen 11, and a battery 14. In some embodiments, the cover plate is covered on the middle frame, and the back cover is covered on the middle frame, and the cover plate and the back cover are located on opposite sides of the middle frame, and the cover plate and the back cover are arranged relative to each other.

[0039] In some embodiments, the shell 12 may be a metal shell, such as a magnesium alloy, stainless steel or other metal. It should be noted that the material of the shell 12 in the embodiment of the present application is not limited thereto, and other methods may also be used, for example, the shell 12 may be a plastic shell. Another example is that the shell 12 is a ceramic shell. Another example is that the shell 12 may include a plastic part and a metal part, and the shell 12 may be a shell structure in which metal and plastic cooperate with each other. Specifically, the metal part may be formed first, such as forming a magnesium alloy substrate by injection molding, and then plastic is injection molded on the magnesium alloy substrate to form a plastic substrate, thereby forming a complete shell structure.

[0040] The circuit board 13 is disposed inside the housing 12. The circuit board 13 may be a mainboard of the electronic device 10. The circuit board 13 may also be integrated with one or more functional components such as a processor, a camera, an earphone jack, an acceleration sensor, a gyroscope, and a motor. At the same time, the display screen 11 may be electrically connected to the circuit board 13 so that the display of the display screen 11 is controlled by the processor on the circuit board 13.

[0041] In some embodiments, the circuit board 13 can be fixed in the housing 12. Specifically, the circuit board 13 can be screwed to the middle frame by screws, or can be snapped to the middle frame by buckles. It should be noted that the specific way of fixing the circuit board 13 to the middle frame in the embodiment of the present application is not limited to this, and other ways are also possible, such as a way of fixing by buckles and screws.

[0042] The battery 14 is disposed inside the housing 12. At the same time, the battery 14 is electrically connected to the circuit board 13 so that the battery 14 can power the electronic device 10. A power management circuit may be disposed on the circuit board 13. The power management circuit is used to distribute the voltage provided by the battery 14 to various electronic devices in the electronic device 10.

[0043] The electronic device 10 is also provided with an antenna assembly. The antenna assembly can be used to implement the wireless communication function of the electronic device 10, for example, the antenna assembly can be used for the ultra-wide band (UWB) communication function. The antenna assembly is arranged inside the housing 20 of the electronic device 10. It can be understood that some components of the antenna assembly can be integrated on the circuit board 13 inside the housing 12, for example, the signal processing chip and the signal processing circuit in the antenna assembly can be integrated on the circuit board 13. In addition, some components of the antenna assembly can also be directly arranged inside the housing 12. For example, the antenna of the antenna assembly can be directly arranged inside the housing 12.

[0044] See also Figure 2 , Figure 2 A schematic diagram of the first structure of an antenna assembly provided in an embodiment of the present application. The antenna assembly may include a hard board area 100 and a soft board area 200. Two antenna branches 101 and 201 are respectively arranged at the left and right ends of the hard board area 100, and the two antenna branches 101 and 201 are respectively connected to two hard board area microstrip lines 103 and 203, one end of the soft board area 200 is fixedly connected to the middle area of ​​the hard board area 100, and the antenna feed point is arranged at the other end of the soft board area 200, and two soft board area microstrip lines 104 and 204 are respectively connected to the hard board area microstrip lines 103 and 203 in the soft board area 200, and the other ends of the soft board area microstrip lines 104 and 204 are connected to the antenna feed point, and the soft board area microstrip lines 104 and 204 and the hard board area microstrip lines 104 and 204 are used to adjust the impedance of the antenna feed point. For example, impedance transformation is performed by calculating and designing different lengths or materials, so as to adjust the impedance of the antenna feed point so that the above impedance is 50 ohms.

[0045] In one embodiment, the soft board area 100 may further include an impedance branch 106, and the soft board area microstrip lines 104 and 204 are connected to the antenna feed point through the impedance branch 106, wherein the impedance branch 106 can be used to adjust the isolation and impedance. The impedance branch 106 can greatly improve the isolation, and in practical applications, the lowest can reach -45dB, which is much lower than the standard -20dB. The device of the impedance branch 106 can be a component, a filter device, or a tuning element, etc. The above-mentioned components can be resistors, capacitors, or inductors, etc., and this application will not be further elaborated on this.

[0046] In one embodiment, the flexible board area 100 may further include a board-to-board connector 107 , so that the antenna feed point on the flexible board area 100 may be connected to the device mainboard through the board-to-board connector 107 .

[0047] In one embodiment, the hard board area 100 may further include two coupling branches 102 and 202 respectively arranged on the left and right sides, and the two coupling branches are respectively arranged under the two antenna branches, for example, the coupling branch 102 is arranged under the antenna branch 101, and the coupling branch 202 is arranged under the antenna branch 201. The radiators of the two antenna branches 101 and 201 may extend in opposite directions respectively, and the two coupling branches 102 and 202 may be arc-shaped. Please continue to refer to Figure 1 A first coupling gap may be formed between the radiator of the antenna branch 101 and the coupling branch 102, and a second coupling gap may be formed between the radiator of the antenna branch 201 and the coupling branch 202. The two antenna branches 101 and 201 may be patch antennas, which may be fixed to the hard board area 110 by bonding, embedding, welding, etc.

[0048] In one embodiment, one side of the hard board area 100 further includes a notch, in which an LED light 105 can be embedded, and the LED light 105 can be used to reflect the anti-interference performance of the antenna assembly.

[0049] In one embodiment, at least one positioning hole may be provided on the hard board area 100 so as to fix the antenna assembly on the main board of the device through the positioning hole, and an isolation wall may be provided on the periphery of the hard board area 100, and the isolation wall serves as a ground plane. Specifically, the isolation wall may include at least one isolation hole, such as an isolation hole located on the right side of the isolation wall and an isolation hole located on the left side of the isolation wall. In addition, the isolation wall also includes a grounding point so that the patch antennas 101 and 201 are connected to the ground plane through the grounding point. It should be noted that the grounding plane may be regarded as a reference ground for the whole machine. The grounding point may also be fixedly connected to the reference ground of the whole machine by welding, and the grounding point may also be fixedly connected to the reference ground of the whole machine by screwing and locking. In other embodiments, the grounding point may also be connected to the reference ground of the whole machine by a connecting wire, and this application does not further limit this.

[0050] In one embodiment, the soft board area 200 can use materials with relatively low DK (dieletric constant) and DF (dissipation factor), such as modified polyimide or polytetrafluoroethylene or liquid crystal polymer with a dielectric constant of 3.0 and a dissipation factor of 0.001. The hard board area 100 can use high-frequency materials with relatively low dielectric constant and dissipation factor. The hard board area 100 and the soft board area 200 can be fixed by surface mounting or hot pressing welding. In this embodiment, the MPI soft board is used to reduce the loss of its line and improve the performance of the antenna. It can also be integrated with peripheral devices such as LED lights at the same time, thereby improving the space utilization rate from the design perspective.

[0051] The antenna assembly in this embodiment can be used to send and receive UWB signals. The UWB signal has good anti-interference performance and can stably transmit data in complex environments. Through the UWB antenna design scheme of the multi-layer interlayer structure interconnection technology, each patch antenna is formed on the hard board area 100. The transmission line used to connect the PATCH antenna to the UWB communication circuit can be implemented on the MPI circuit board of the HTCP process. The above-mentioned antenna assembly can enable electronic devices to accurately measure the position of another electronic device (which can be a base station or a tag) by performing positioning operations using the UWB antenna structure. Figure 3 As shown, the device 10 integrating the above-mentioned UWB antenna assembly can be connected with other devices for positioning, and the above-mentioned devices include but are not limited to advertising screens and / or smart screens, remote controls, smart bracelets, smart rings, smart door locks, smart homes, etc., such as Figure 3 The remote control 20 and the smart screen 30, etc., are not further limited in this embodiment.

[0052] The UWB antenna provided in this embodiment adopts an ultra-small antenna design, and its size can be 26×9×2.5mm. It can optimize the antenna by making full use of the best clearance of the antenna area. It is simple to assemble, and can avoid the consistency problems caused by the assembly of complex antenna components. It is also low-cost. It should be noted that the above-mentioned UWB antenna adopts a variety of dynamic deformation materials and structural designs to adjust the size and frequency of the antenna, so as to adapt to different needs. It can be integrated in small devices with a smaller size and thinner design while maintaining high performance.

[0053] In one embodiment, the multi-antenna mutual positioning technology adopts a complex signal processing algorithm to accurately calculate the arrival angle of the signal and extract useful information from the noise to achieve high-precision positioning. For example, through the Kalman filter algorithm, the state of the system is specifically represented by the state vector, including position, speed, etc. The Kalman filter can be fused with other sensor data such as IMU (inertial measurement unit) to improve the overall positioning accuracy and stability by fusing multiple positioning technologies. In addition, the Kalman filter can also be used to process NLOS (non-line-of-sight) errors in UWB systems to further improve the accuracy of positioning.

[0054] As can be seen from the above, the antenna assembly provided in the embodiment of the present application includes a soft board area and a hard board area, two antenna branches are respectively arranged at the two ends of the hard board area, the two antenna branches are respectively connected to two hard board area microstrip lines, one end of the soft board area is fixedly connected to the middle area of ​​the hard board area, the antenna feed point is arranged at the other end on the soft board area, two soft board area microstrip lines respectively connected to the hard board area microstrip lines are arranged in the soft board area, the other end of the soft board area microstrip line is connected to the antenna feed point, and the soft board area microstrip line and the hard board area microstrip line are used to adjust the impedance of the antenna feed point. The antenna assembly provided in the embodiment of the present application can receive signals through multiple antennas and calculate their arrival angles, further improving the accuracy of positioning and the reliability of the system.

[0055] The present utility model also provides an electronic device, including a housing and an antenna assembly, wherein the antenna assembly is located inside the housing, and the antenna assembly includes:

[0056] A hard board area, two antenna branches are respectively arranged at two ends of the hard board area, and the two antenna branches are respectively connected to two hard board area microstrip lines;

[0057] A soft board area, one end of the soft board area is fixedly connected to the middle area of ​​the hard board area, an antenna feed point is arranged at the other end of the soft board area, the antenna feed point is connected to the device mainboard through a board-to-board connector, two soft board area microstrip lines respectively connected to the hard board area microstrip line are arranged in the soft board area, and the other end of the soft board area microstrip line is connected to the antenna feed point through an impedance branch.

[0058] In one embodiment, the housing includes a metal middle frame and a bottom shell, wherein the metal middle frame surrounds the bottom shell to form a receiving space, and the antenna assembly A is a UWB antenna that can be disposed in the receiving space. Figure 4 The storage space of the electronic device may also include an LTE antenna B, a 5G antenna C, an NFC antenna F, at least one camera such as a wide-angle camera D and a telephoto camera E, and a metal embedded area G.

[0059] In this embodiment, the LTE antenna B can be used to transmit and receive 4G (the 4th generation mobile communication technology) radio frequency signals, and the 5G antenna C can be used to transmit and receive 5G (5th generation mobile networks or 5th generation wireless systems) radio frequency signals. The 4G frequency bands may include B1 / B2 / B3 / B4 / B5 / B6 / B7 / B8 / B9 / B12 / B17 / B18 / B19 / B20 / B26 / B28, etc., and the 5G frequency bands may include N1 / N3 / N5 / N8 / N28 / N77 / N78 / N79, etc.

[0060] Furthermore, the NFC antenna F is, for example, an NFC (Near Field Communication) chip, which can provide a differential excitation current. In addition, a non-near field communication chip such as a cellular communication chip, a Wi-Fi chip or a GPS (Global Positioning System) chip can be included to provide a non-near field communication excitation current, and the non-near field communication excitation current can include one of a cellular network signal, a Wi-Fi signal, and a GPS signal, which is not further limited in this embodiment.

[0061] In one embodiment, the electronic device may further include a carrier plate, which is connected to the metal middle frame and serves as a ground plane, and a gap is formed between the radiator inside the metal middle frame and the carrier plate.

[0062] In one embodiment, the electronic device further includes a battery and a circuit board, wherein the battery and the circuit board are both disposed on the carrier board, and the signal source is disposed on the circuit board.

[0063] In addition, it can be understood that the material of the above-mentioned middle frame may include metal, for example, when it includes metals such as magnesium alloy and aluminum alloy, the metal middle frame can be used to form a system ground, which is the entire ground of the electronic device.

[0064] In this embodiment, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a personal digital assistant (PDA), a mobile Internet device (MID), a wearable device, etc.

[0065] In one embodiment, please continue to refer to Figure 5 , where the electronic device with integrated antenna assembly can be a smart door lock 40, which integrates the above-mentioned UWB antenna assembly 41, so it can be controlled by another UWB device (such as a mobile phone), and the user does not need to touch the door lock with the mobile phone. As long as the mobile phone is within the specified range of the door lock, the door can be opened automatically. In addition, the above-mentioned smart door lock 40 also includes a password input interface 41, a fingerprint recognition interface 42 and a mechanical keyhole 43. The UWB smart door lock is designed for security. Only users who have been authenticated by the homeowner can register, and after each unlocking, the user will receive a notification to understand the entry and exit situation. In addition, the smart door lock 40 with a UWB antenna assembly is also compatible with the cloud system. If a device such as a smartphone is lost, the user can delete the digital key of the door lock to increase security.

[0066] Specifically, the door lock application needs to connect the two antennas in the hardware to ANT1 and ANT2 of the UWB antenna assembly respectively to achieve correct antenna installation and configuration, and then go through the steps of antenna module-to-module connection configuration, fixed parameter quick configuration, custom parameter configuration, and AT commands can be used for configuration. When connected to a mobile phone, the smart door lock 40 with a UWB antenna assembly supports direct connection with devices such as mobile phones (must have UWB-enabled mobile phones), and can use a door lock-specific APP to quickly pair and bind the mobile phone to the door lock. It should be noted that UWB technology 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.

[0067] In another embodiment, please continue to refer to Figure 6, wherein the electronic device integrated with the antenna component can be a remote control 20, which integrates the above-mentioned UWB antenna component. The UWB antenna can be positioned through the fusion of IMU and UWB to form an air mouse, so that the user can use the remote control to perform finger pressing, sliding pressing, long pressing and other operations on the smart screen, and obtain the same precise touch experience as a mobile phone / tablet. The remote control also supports a variety of gesture operations, such as sliding, tapping, dragging, circling, jumping, etc., which can control the TV UI in the air and turn the TV into a "giant screen mobile phone". By combining the high-precision distance measurement of UWB with the real-time motion information of IMU, the accuracy and response speed of the positioning system can be improved. IMU data can be used to correct the measurement error and drift of UWB. Fusion algorithms usually use extended Kalman filtering (EKF), unscented Kalman filtering (UKF) or other filtering algorithms to integrate UWB and IMU data. These algorithms can handle the uncertainty and noise of sensor data and provide more accurate state estimation.

[0068] The above is the antenna assembly and electronic device provided by the embodiment of the present application. The antenna assembly includes a soft board area and a hard board area. Two antenna branches are respectively arranged at both ends of the hard board area. The two antenna branches are respectively connected to two hard board area microstrip lines. One end of the soft board area is fixedly connected to the middle area of ​​the hard board area. The antenna feed point is arranged at the other end on the soft board area. The antenna feed point is connected to the device mainboard through a board-to-board connector. Two soft board area microstrip lines are arranged in the soft board area, which are respectively connected to the hard board area microstrip lines. The other end of the soft board area microstrip line is connected to the antenna feed point through an impedance branch. The antenna assembly provided by the embodiment of the present application can receive signals through multiple antennas and calculate their arrival angles, further improving the accuracy of positioning and the reliability of the system.

[0069] The antenna assembly and electronic device provided in the embodiments of the present application are described in detail above. The principles and implementation methods of the present application are described in detail using specific examples herein. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An antenna assembly, characterized in that: include: A hard board area, two antenna branches are respectively arranged at two ends of the hard board area, and the two antenna branches are respectively connected to two hard board area microstrip lines; A soft board area, one end of the soft board area is fixedly connected to the middle area of ​​the hard board area, an antenna feed point is arranged at the other end of the soft board area, the antenna feed point is connected to the device mainboard through a board-to-board connector, two soft board area microstrip lines respectively connected to the hard board area microstrip line are arranged in the soft board area, and the other end of the soft board area microstrip line is connected to the antenna feed point through an impedance branch.

2. The antenna assembly according to claim 1, characterized in that: The microstrip line in the soft board area and the microstrip line in the hard board area are used to adjust the impedance of the antenna feed point, and the impedance branch is used to adjust the isolation and impedance.

3. The antenna assembly according to claim 1, characterized in that: The hard board area also includes two coupling branches, and the two coupling branches are respectively arranged below the two antenna branches.

4. The antenna assembly according to claim 3, characterized in that: The radiators of the two antenna branches extend in opposite directions respectively, and the two coupling branches are in arc shape.

5. The antenna assembly according to claim 1, characterized in that: One side of the hard board area includes a notch, in which an LED light is arranged, and the LED light is used to light up and down according to the anti-interference performance of the antenna assembly.

6. The antenna assembly according to claim 1, characterized in that: At least one positioning hole is arranged on the hard board area, so as to fix the antenna assembly on the device mainboard through the positioning hole, and an isolation wall is arranged on the periphery of the hard board area, and the isolation wall serves as a ground plane.

7. The antenna assembly according to any one of claims 1 to 6, characterized in that: The material of the soft board area is improved polyimide or polytetrafluoroethylene or liquid crystal polymer with a dielectric constant of 3.0 and a loss factor of 0.

001. The hard board area and the soft board area are fixed by surface mounting or hot pressing welding.

8. The antenna assembly according to any one of claims 1 to 6, characterized in that: The antenna assembly is used for transmitting and receiving UWB signals, and the size of the antenna assembly is 26×9×2.5 mm.

9. An electronic device, characterized in that: The electronic device comprises a housing and an antenna assembly, wherein the antenna assembly is located inside the housing, and the antenna assembly comprises: A hard board area, two antenna branches are respectively arranged at two ends of the hard board area, and the two antenna branches are respectively connected to two hard board area microstrip lines; A soft board area, one end of the soft board area is fixedly connected to the middle area of ​​the hard board area, an antenna feed point is arranged at the other end of the soft board area, two soft board area microstrip lines respectively connected to the hard board area microstrip line are arranged in the soft board area, the other end of the soft board area microstrip line is connected to the antenna feed point, and the soft board area microstrip line and the hard board area microstrip line are used to adjust the impedance of the antenna feed point.

10. The electronic device according to claim 9, characterized in that: The shell includes a metal middle frame and a bottom shell, the metal middle frame forms a receiving space around the bottom shell, the antenna assembly is arranged in the receiving space, and the receiving space also includes an LTE antenna, a 5G antenna, an NFC antenna, at least one camera and a metal embedded area.

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