UWB module and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, and particularly discloses a UWB module, which comprises a metal shell and an antenna unit. The metal shell is provided with an inner cavity; the antenna unit is arranged in the inner cavity, the antenna unit is coupled with the metal shell so that the antenna unit can radiate outwards through the metal shell, the antenna unit is provided with a defect gap, and the defect gap is parallel to the inner wall of the opposite part of the metal shell in the direction pointing to the edge from the center of the antenna unit. Through the above mode, the embodiment of the utility model can improve the outward radiation effect when the antenna unit is in the metal shell.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a UWB module and electronic device. Background Technology

[0002] Ultra Wide Band (UWB) technology has enormous potential, becoming a hot topic in the market due to its advantages such as high positioning accuracy, good security, strong anti-interference, low power consumption, and high-speed data transmission over short distances. UWB technology boasts advantages such as low system complexity, low transmitted signal power spectral density, insensitivity to channel fading, high security, and high positioning accuracy, making it particularly suitable for high-speed wireless access in dense, multipath-heavy environments such as indoor spaces.

[0003] In the process of realizing this utility model, the inventors discovered that although the portable device is equipped with a UWB antenna, the UWB antenna is placed inside the metal casing of the portable device, and the UWB antenna and the metal casing are independent of each other. The metal casing actually has a certain degree of suppression on the UWB antenna, resulting in poor radiation effect of the UWB antenna. Utility Model Content

[0004] This utility model provides a UWB module and electronic device that can improve the outward radiation effect of the antenna unit when it is inside a metal casing.

[0005] To solve the above-mentioned technical problems, the present invention provides a UWB module, which includes a metal shell and an antenna unit. The metal shell has an inner cavity. The antenna unit is disposed in the inner cavity and coupled to the metal shell so that the antenna unit radiates outward through the metal shell. The antenna unit has a defective gap along the direction from the center of the antenna unit to the edge, and the defective gap is parallel to the inner wall of the opposite part of the metal shell.

[0006] Optionally, the shape of the defect gap can be arc-shaped, straight, or C-shaped.

[0007] Optionally, the antenna element includes a copper-clad area, and the defect gap is located in the copper-clad area.

[0008] Optionally, the defect gap is located on the side of the copper-clad area closest to the metal casing.

[0009] Optionally, the copper-clad area inside the defect gap is the antenna feed point, and the copper-clad area outside the defect gap is the antenna ground point.

[0010] Optionally, the shape of the antenna element matches the cross-sectional shape of the cavity.

[0011] Optionally, the antenna element can be circular or rectangular in shape.

[0012] Optionally, a gap is provided between the edge of the antenna element and the inner wall of the metal housing.

[0013] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide an electronic device, including the UWB module as described in any of the above embodiments.

[0014] Optionally, the electronic device also includes a screen, which is mounted on a metal casing, and an antenna unit is attached to the inside of the screen.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike existing technologies, this utility model embodiment provides a UWB module, which includes a metal housing and an antenna unit. The metal housing has an inner cavity; the antenna unit is disposed within the inner cavity and coupled to the metal housing, allowing the antenna unit to radiate outwards through the metal housing. The antenna unit has a defective slot that protrudes outwards relative to the central region of the antenna unit. Through the above-described design, this utility model embodiment can improve the outward radiation effect of the antenna unit within the metal housing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the UWB module according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the antenna unit according to an embodiment of the present invention;

[0019] Figure 3 This is a parameter diagram of the UWB module in an embodiment of this utility model;

[0020] Figure 4 This is an in-band efficiency diagram of the UWB module according to an embodiment of the present invention;

[0021] Figure 5 This is the radiation pattern of the UWB module of this utility model when it is operating at 6.5GHz with Ph i at 0 degrees in the radiation direction;

[0022] Figure 6 This is the radiation pattern of the UWB module of this utility model when it is working at 8GHz with Ph i at 0 degrees in the radiation direction;

[0023] Figure 7This is the radiation pattern of the UWB module of this utility model when it is operating at 6.5GHz with Phi at 90 degrees in the radiation direction;

[0024] Figure 8 This is the radiation pattern of the UWB module of this utility model when it is operating at 8GHz with Ph i at 90 degrees in the radiation direction;

[0025] Figure 9 This is a phase difference diagram of the UWB module in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. UWB module;

[0028] 1. Metal casing;

[0029] 2. Antenna element; 21. Copper-clad area; 211. Defect gap; 212. Antenna feed point; 213. Antenna grounding point. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0032] Please see Figure 1 The UWB module 100 includes a metal housing 1 and an antenna element 2. The antenna element 2 can be used to transmit data for positioning within the UWB system. The antenna element 2 is disposed within the metal housing 1 and coupled to the metal housing 1 so that the antenna element 2 can radiate outward through the metal housing 1, thereby improving the radiation performance of the antenna element 2 within the metal housing 1.

[0033] For the metal casing 1 mentioned above, please refer to... Figure 1 The metal casing 1 has an inner cavity.

[0034] For antenna element 2 mentioned above, please refer to... Figure 1 and 2 Antenna element 2 is a slot antenna. Antenna element 2 is disposed within the inner cavity, and a gap is provided between the edge of antenna element 2 and the metal outer shell 1. Antenna element 2 is a plate-shaped antenna, and its shape matches the shape of the inner cavity along the plane where it is located. Antenna element 2 includes a copper-clad area 21, and a defective slot 211 is provided on the side of the copper-clad area 21 closest to the metal outer shell 1. The defective slot 211 is arc-shaped and protrudes outward relative to the center of antenna element 2. It is understood that the defective slot 211 can also be rectangular, C-shaped, or other shapes, as long as it is parallel to the inner wall of the metal outer shell 1 along the direction from the center of antenna element 2 to the edge, i.e., along the direction from the outer edge of antenna element 2 to the inner wall of the metal outer shell 1. The inner side of the copper-clad area 21 with respect to the defective slot 211 is the antenna feed point 212, and the outer side of the copper-clad area 21 with respect to the defective slot 211 is the antenna ground point 213. Optionally, matching can be designed at the antenna feed point 212 to adjust resonance. The resonant point of the antenna can be adjusted by adjusting the size of the copper plating area 21, the length of the defect gap 211, and the width of the defect gap 211. It can be understood that, given a fixed internal cavity size, the size of the copper plating area 21 can be adjusted by adjusting the size between the antenna element 2 and the inner wall of the metal casing 1.

[0035] In some embodiments, the metal casing 1 includes a sidewall (not shown) disposed along the thickness direction of the antenna element 2, and the antenna element 2 disposed in a direction perpendicular to the sidewall. The sidewall can be circular, the antenna element 2 can be circular, and the antenna element 2 can be disposed within the sidewall, with a gap between the outer edge of the antenna element and the inner side of the sidewall. Alternatively, the sidewall can be rectangular, the antenna element 2 can be rectangular, and the antenna element 2 can be disposed within the sidewall, with a gap between the outer edge of the antenna element and the inner side of the sidewall. Electronic watches or electronic bracelets, as common portable electronic products, are often rectangular or cylindrical in shape and often have sidewalls in the shape of a circular or rectangular ring. Through the aforementioned sidewall and antenna element 2 configuration, the UWB module 100 can be adapted to the common shapes of electronic watches or electronic bracelets.

[0036] To verify the antenna design of this utility model embodiment, a simulation example is provided. Figure 3 The S11 parameter diagram of UWB module 100 is shown. UWB module 100 operates in the CH5 band (6.25GHz-6.75GHz) and the CH9 band (7.75GHz-8.25GHz). Figure 4The in-band efficiency diagram of UWB module 100 is shown. The average in-band efficiency of CH5 band is -6.12dB and the average in-band efficiency of CH9 band is -8.17dB. Figure 5 This is the actual test radiation pattern of the UWB module 100 of this utility model embodiment when it is working at 6.5GHz with Phi of 0 degrees in the radiation direction. The UWB module 100 has good radiation performance and can meet normal use. Figure 6 This is the radiation pattern of the UWB module 100 of this utility model when it is working at 8GHz with Phi of 0 degrees in the radiation direction. The UWB module 100 has good radiation performance and can meet normal use. Figure 7 This is a radiation pattern of the UWB module 100 of this utility model when it is working at 6.5GHz with a radiation direction Phi of 90 degrees. The UWB module 100 has good radiation performance and can meet normal use requirements. Figure 8 This utility model embodiment shows the radiation pattern of the UWB module 100 when it operates at 8GHz with a radiation direction Phi of 90 degrees. The UWB module 100 has good radiation performance and can meet normal use requirements. Figure 9 The phase difference diagram of UWB module 100 is shown. UWB module 100 has good monotonicity and can meet the requirements of UWB positioning applications.

[0037] In this embodiment of the invention, the UWB module 100 includes a metal housing 1 and an antenna unit 2. The metal housing 1 has an inner cavity; the antenna unit 2 is disposed in the inner cavity and coupled to the metal housing 1 so that the antenna unit 2 radiates outward through the metal housing 1. The antenna unit 2 has a defective slot 211 that protrudes outward relative to the central region of the antenna unit 2. Through the above-described configuration, this embodiment of the invention can improve the outward radiation effect when the antenna unit 1 is inside the metal housing 1.

[0038] This utility model provides an embodiment of an electronic device, which includes the UWB module 100 described above. The structure and function of the UWB module 100 can be found in the above embodiment, and will not be repeated here.

[0039] In some embodiments, the electronic device further includes a screen (not shown), which is disposed within the metal housing 1, with a portion of the screen located within the inner cavity. The outer side of the screen is exposed to the metal housing 1 and is used to display information; the inner side of the screen is disposed within the inner cavity. An antenna unit 2 is attached to the inner side of the screen. This not only makes the electronic device structure compact and makes full use of space, but also makes it easy to determine the mounting position of the antenna unit 2 within the screen, facilitating the installation of the antenna unit. The antenna unit 2 is fixed to the screen with adhesive backing. This fixing method further facilitates the assembly of the antenna unit and also reduces the assembly cost of the antenna. The antenna unit 2 of this embodiment can radiate outwards simultaneously through the metal housing 1 and the screen, greatly improving radiation performance and ensuring the radiation effect of the antenna unit 2 within the metal housing 1.

[0040] Optionally, the electronic device can be a smartwatch, smart bracelet, or other portable device. Portable devices are small in size, the size of the metal casing 1 is limited, and the usable space inside the cavity is not large. This embodiment of the invention can achieve both a compact structure and good radiation performance within a limited space.

[0041] Optionally, the electronic device also includes a first wristband (not shown in the figure) and a second wristband (not shown in the figure), which are respectively disposed on opposite sides of the metal casing 1. The first wristband has a first snap-fit ​​structure at the end away from the metal casing 1, and the second wristband has a second snap-fit ​​structure at the end away from the metal casing. The first snap-fit ​​structure and the second snap-fit ​​structure are snapped together to wear the electronic device on the wrist.

[0042] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A UWB module, characterized in that, The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device.

2. The UWB module of claim 1, wherein, The application relates to an UWB module and an electronic device.

3. The UWB module of claim 1, wherein, The application relates to an UWB module and an electronic device.

4. The UWB module of claim 3, wherein, The application relates to an UWB module and an electronic device.

5. The UWB module of claim 3, wherein, The application relates to an UWB module and an electronic device.

6. The UWB module of claim 1, wherein, The application relates to an UWB module and an electronic device.

7. The UWB module of claim 1, wherein, The application relates to an UWB module and an electronic device.

8. The UWB module of claim 1, wherein, The application relates to an UWB module and an electronic device.

9. An electronic device, comprising: The application relates to an UWB module and an electronic device.

10. The electronic device of claim 9, wherein, The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application relates to an UWB module and an electronic device. The application

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