Antenna splinter and electronic device

Abstract

The application discloses an antenna spring piece and an electronic device, and belongs to the technical field of communication. The antenna spring piece comprises an elastic contact part and a mounting part. The mounting part is arranged on one side of the elastic contact part, and a coupling space is arranged on the mounting part. When the antenna spring piece is mounted on a circuit board through the mounting part, the coupling space, a vacant area on the circuit board and a coupling transmission line in the vacant area form a coupler.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to an antenna spring and an electronic device. Background Technology

[0002] In related technologies, for communication devices such as mobile phones, a portion of the transmission power can be coupled out at the signal transmitting end using a coupler and fed back to the control end to monitor the transmission power of the mobile phone and other communication devices in real time. Then, the transmission power can be dynamically adjusted according to the communication distance to avoid affecting the communication quality due to spatial loss that may occur during signal transmission.

[0003] However, with the arrival of the 5G era, taking mobile phones as an example, the number of signal transmission frequency bands on mobile phones has increased, which requires multiple couplers to monitor the transmission power of different frequency bands. However, the increase in the number of couplers will lead to problems such as increased difficulty in circuit board routing and increased mobile phone manufacturing costs. Summary of the Invention

[0004] The purpose of this application is to provide an antenna spring and electronic device that can increase the transmission power of different frequency bands by adding couplers without increasing the difficulty of circuit board routing and the manufacturing cost of electronic devices such as mobile phones.

[0005] In a first aspect, embodiments of this application provide an antenna spring, comprising: an elastic contact portion and a mounting portion; the mounting portion is disposed on one side of the elastic contact portion, and a coupling space is provided on the mounting portion; wherein, when the antenna spring is mounted on a circuit board through the mounting portion, the coupling space forms a coupler with an empty area on the circuit board and a coupling transmission line located in the empty area.

[0006] Secondly, embodiments of this application provide an electronic device, which includes a circuit board, a coupling transmission line, and the antenna spring described in the first aspect. The circuit board has an empty area; the coupling transmission line is disposed in the empty area, the antenna spring is mounted on the circuit board, and the coupling space, the empty area on the circuit board, and the coupling transmission line located in the empty area form a coupler; wherein, when transmitting a signal through the antenna spring, the coupler is used to collect the transmission power of the transmitted signal.

[0007] In the embodiments of this application, through the ingenious design of the antenna spring in the electronic device, on the one hand, the coupling effect between the antenna spring and the microstrip line on the circuit board can be utilized to enable the antenna spring to not only meet the antenna feed point function, but also add the function of the coupler; on the other hand, since there is no need to design a coupler separately, the motherboard space of mobile phones and other electronic devices can be effectively saved, the complexity of circuit board routing can be reduced, and the manufacturing cost of mobile phones and other electronic devices can be saved. Attached Figure Description

[0008] Figure 1 This is one of the structural schematic diagrams of an antenna spring provided in an exemplary embodiment of this application.

[0009] Figure 2 This is a schematic diagram of the circuit board structure provided in an exemplary embodiment of this application.

[0010] Figure 3 This is a second schematic diagram of the structure of the antenna spring provided in an exemplary embodiment of this application.

[0011] Figure 4 This is a second schematic diagram of the structure of the antenna spring provided in an exemplary embodiment of this application.

[0012] Figure 5 This is a schematic diagram of the mounting portion in an antenna spring provided in an exemplary embodiment of this application. Detailed Implementation

[0013] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0014] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0015] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0017] The technical solutions provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0018] like Figure 1 The diagram shown is a schematic representation of an antenna spring 10 provided in an exemplary embodiment of this application. The antenna spring 10 may include an elastic contact portion 12 and a mounting portion 11.

[0019] It is understandable that, taking a mobile phone as an example, the antenna of a mobile phone is generally set on the frame or shell (such as the back cover) of the mobile phone. When the frame or shell of the electronic device is attached to the mobile phone, the antenna on the frame or shell can contact the antenna spring 10. That is, the antenna on the mobile phone frame or shell can contact the elastic contact part 12 on the antenna spring 10 to realize the transmission and reception of radio frequency signals.

[0020] Meanwhile, regarding the mounting portion 11, the antenna spring 10 is mounted to the circuit board (such as a printed circuit board, PCB) on the mobile phone via the mounting portion 11 on the antenna spring 10. That is, the mounting portion 11 can be provided on one side of the elastic contact portion 12 to at least achieve the purpose of mounting the antenna spring 10 to the mobile phone.

[0021] However, in this embodiment, in addition to mounting the antenna spring 10 as described above, the mounting part 11 may also be provided with... Figure 1 The coupling space 111 shown, and as shown Figure 2 As shown, the circuit board 20 for mounting the antenna spring 10 has an empty area 21 corresponding to the coupling space 111, and a coupling transmission line 22 is provided in the empty area 21. Thus, when the antenna spring 10 is mounted on the circuit board 20 through the mounting part 11, the coupling space 111, the empty area 21 on the circuit board, and the coupling transmission line located in the empty area 21 form a coupler.

[0022] In other words, compared with the antenna spring in related technologies, the antenna spring 10 provided in this embodiment retains the basic function of the spring antenna feed point, and also sets a coupling space 111 at the bottom of the antenna spring 10 (i.e., the mounting part 11), and sets a coupling transmission line (also called a microstrip line or sub-microstrip line) in the empty area 21 on the corresponding circuit board 20. In this way, by utilizing the radiation of the antenna spring 10 and the surrounding pads themselves, a portion of the radio frequency signal is coupled and fed back to the controller in the electronic device (such as a mobile phone) to realize the function of the coupler.

[0023] For example, when the transmitted signal is transmitted to the antenna through the circuit board 20, pads, and antenna spring 10, a portion of the radio frequency signal will be output to the control terminal through the coupling space 111 and coupling transmission line 22 on the antenna spring 10 to complete the sampling of the transmitted signal.

[0024] In one implementation, the aforementioned correspondence between the coupling space 111 and the empty area 21 can be understood as follows: the projection of the coupling space 111 onto the circuit board 20 at least partially overlaps with the empty area 21 on the circuit board 20. For example, the projection of the coupling space 111 onto the circuit board completely overlaps with the empty area 21 on the circuit board; or, the projection of the coupling space 111 onto the circuit board is located within the empty area 21 on the circuit board. This improves the coupler's ability to acquire the transmission power of the transmitted signal, thereby enhancing the coupler's performance.

[0025] Of course, considering that the coupling space 111 is used to couple part of the radio frequency signal to achieve radio frequency signal sampling, there are various ways to set the coupling space 111 in this embodiment, thereby improving the applicability and flexibility of the coupler (or antenna spring).

[0026] Please refer to it again. Figure 1 In one implementation, the mounting portion 11 can be a substrate, and the coupling space 111 is formed by a groove formed on the substrate and away from the elastic contact portion 12. The size and shape of the groove can be determined according to actual needs or the coupling characteristics of the coupler.

[0027] For example, along the first direction of the substrate, the groove can be as follows: Figure 1 The groove extends through one end of the substrate. Alternatively, the groove along a first direction of the substrate can be as follows: Figure 3 The diagram shows a first end A and a second end B penetrating the substrate, with the first end A and the second end B facing each other. The first direction can be, but is not limited to, [the following]. Figure 1 The length direction shown can also be the width direction of the substrate, such as the first direction, and is not limited here.

[0028] Regarding the aforementioned groove, along the second direction of the groove, the cross-section of the groove can be an arc surface or a rectangle, etc., and is not limited thereto. The second direction can be, but is not limited to, other types of directions. Figure 1 The thickness direction is shown in the figure.

[0029] In another implementation, such as Figure 4 As shown, the side of the mounting portion 11 away from the elastic contact surface can be an arc-shaped concave surface, and the coupling space 111 is formed by the arc-shaped concave surface.

[0030] Alternatively, the coupling space 111 can also be as follows: Figure 5 As shown, the mounting portion 11 may include a plurality of sub-mounting portions 112, and the coupling space 111 is formed by the plurality of sub-mounting portions 112. The plurality of sub-mounting portions 112 may be arranged to form... Figure 5 The ellipse shown can also be a circle, rectangle, etc. Correspondingly, the shape and number of the sub-mounting parts 112 are not limited here. For example, the shape of the sub-mounting parts 112 can be a cylinder, cuboid, etc., and there is no limitation here.

[0031] It should be noted that when the coupling space is formed by multiple sub-mounting portions 112, the sub-mounting portions 112 can be evenly distributed to ensure the signal acquisition quality of the coupler. Furthermore, the more sub-mounting portions 112 there are, the better the signal acquisition effect of the coupler.

[0032] For the antenna spring 10 provided in the aforementioned implementations, the size (e.g., length, width, height) of the coupling space 111 disposed on the mounting portion 11, as well as the length and width of the coupler signal line, may affect the characteristic impedance and electrical length of the coupler signal line, and thus affect the coupling coefficient of the coupler. In other words, the size of the coupling space 111 can be determined according to the coupling coefficient of the coupler.

[0033] For example, consider a coupling space 111 formed by a groove on the substrate, away from the elastic contact portion. The closer the coupling transmission line is to the groove wall, the better the coupling performance of the coupler; conversely, the further away the line is, the worse the coupling performance.

[0034] For example, suppose that for the antenna spring 10 and circuit board 20 after the design is finalized, the coupled transmission line will have a fixed even-mode characteristic impedance. And strange model sexual resistance and fixed even-mode electrical length Heqi mode electric length Therefore, the output voltage of the coupler provided in this embodiment... It can be shown in Equation (1). In Equation (1), Z0 is the port impedance, which can be a fixed value, such as 50 ohms.

[0035] (1)

[0036] Furthermore, the coupling degree (or coupling coefficient) C of the coupler can be expressed as shown in equation (2).

[0037] (dB)(2)

[0038] It should be noted that, based on the formulas (1) and (2) provided above, when designing the coupler, the coupling transmission line can be selected according to the required coupling degree of the coupler, thereby determining the size of the coupling space.

[0039] The antenna spring 10 described in this embodiment, through its ingenious design, can, on the one hand, utilize the coupling effect between the antenna spring 10 and the microstrip line on the circuit board 20, enabling the antenna spring 10 to not only fulfill the function of an antenna feed point but also add the function of a coupler; on the other hand, since there is no need to design a coupler separately, it can effectively save motherboard space in mobile phones and other electronic devices, reduce the complexity of circuit board routing, save manufacturing costs for mobile phones and other electronic devices, and avoid interference introduced by too many traces.

[0040] Based on the aforementioned description of the antenna spring 10, this application embodiment also provides an electronic device, which includes a circuit board, a coupling transmission line, and the aforementioned antenna spring 10. The circuit board has a vacant area 21; the coupling transmission line is arranged in the vacant area 21; the antenna spring 10 is mounted on the circuit board; the coupling space 111, the vacant area 21 on the circuit board, and the coupling transmission line located in the vacant area 21 form a coupler; wherein, when transmitting a signal through the antenna spring 10, the coupler is used to collect the transmission power of the transmitted signal.

[0041] Optionally, the projection of the coupling space onto the circuit board at least partially overlaps with an empty area on the circuit board.

[0042] Optionally, the electronic device further includes a controller, and the coupler is connected to the controller via the coupling transmission line.

[0043] It is understood that since the antenna spring in the electronic device has the same or corresponding technical features as the antenna spring 10 provided in the foregoing embodiment, the antenna spring 10 in the electronic device can be referred to the relevant description of the foregoing antenna spring 10 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0044] It should be noted that the type of electronic device can be varied in this embodiment. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, handheld computer, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the types.

[0045] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0046] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0047] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An antenna spring, characterized in that, include: Flexible contact parts and mounting parts; The mounting portion is disposed on one side of the elastic contact portion, and the mounting portion is provided with a coupling space; In the case where the antenna spring is mounted on the circuit board via the mounting part, the coupling space forms a coupler with the empty area on the circuit board and the coupling transmission line located in the empty area; The mounting portion is a substrate, and the coupling space is formed by a groove formed on the substrate and on the side away from the elastic contact portion.

2. The antenna spring as described in claim 1, characterized in that, Along a first direction of the substrate, the groove extends through one end of the substrate.

3. The antenna spring as described in claim 2, characterized in that, Along a first direction of the substrate, the groove extends through a first end and a second end of the substrate, with the first end and the second end facing each other.

4. The antenna spring as described in any one of claims 1-3, characterized in that, Along the second direction of the groove, the cross-section of the groove is an arc surface.

5. The antenna spring as described in claim 1, characterized in that, The mounting portion includes multiple sub-mounting portions, and the coupling space is formed by the multiple sub-mounting portions.

6. The antenna spring as described in claim 1, characterized in that, The side of the mounting portion away from the elastic contact portion is an arc-shaped concave surface, and the coupling space is formed by the arc-shaped concave surface.

7. The antenna spring as described in claim 1, characterized in that, The projection of the coupling space onto the circuit board at least partially overlaps with an empty area on the circuit board.

8. An electronic device, characterized in that, The electronic device includes a circuit board, a coupling transmission line, and an antenna spring according to any one of claims 1-7, wherein the circuit board has a vacant area. The coupling transmission line is laid in the empty area, the antenna spring is mounted on the circuit board, and the coupling space, the empty area on the circuit board, and the coupling transmission line located in the empty area form a coupler. In the case of transmitting signals through the antenna spring, the coupler is used to collect the transmission power of the transmitted signal.

9. The electronic device as claimed in claim 8, characterized in that, The projection of the coupling space onto the circuit board at least partially overlaps with an empty area on the circuit board.

10. The electronic device as claimed in claim 8, characterized in that, The electronic device also includes a controller, and the coupler is connected to the controller via the coupling transmission line.

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