Antenna structure and electronic device

Abstract

The present disclosure relates to an antenna structure and an electronic device. The antenna structure includes a radiating arm, a feed point disposed on the radiating arm, the feed point being electrically connected to a signal source, and a distal ground point disposed on an end of the radiating arm distal from the feed point, the distal ground point being electrically connected to a ground layer of an electronic device in which the antenna structure is disposed.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and in particular to an antenna structure and electronic device. Background Technology

[0002] With the continuous development of communication technology, in order to improve communication speed and ensure communication reliability across various application scenarios, it is necessary to configure more and more antennas in electronic devices. As the number of antennas increases, higher requirements are placed on the design and layout of each antenna to ensure compatibility in antenna efficiency. Summary of the Invention

[0003] This disclosure provides an antenna structure and electronic device to address the shortcomings of related technologies.

[0004] According to a first aspect of the present disclosure, an antenna structure is provided, comprising:

[0005] Radiation arm;

[0006] A feed point is provided on the radiating arm and is used for electrical connection to a signal source;

[0007] A remote grounding point is provided at the end of the radiating arm away from the feed point, and the remote grounding point is electrically connected to the ground plane of the electronic device configured with the antenna structure.

[0008] Optionally, the antenna structure includes multiple radiating arms, and the feed point is located at the connection of the multiple radiating arms.

[0009] Optionally, the antenna structure includes a first radiating arm, a second radiating arm, and a third radiating arm, wherein the first radiating arm and the second radiating arm both extend from the feed point to one side, and the first radiating arm and the second radiating arm are located on both sides of the feed point;

[0010] The third radiating arm extends from the feed point in a direction away from the first and second radiating arms.

[0011] Optionally, one or more remote grounding points may be provided at the end of any radiating arm away from the feed point.

[0012] Optional, also includes:

[0013] Near-end grounding point, each of the near-end grounding points is located on one end of any radiating arm near the feed point.

[0014] Optionally, a spring contact is also included, through which the remote grounding point is grounded.

[0015] Optionally, it also includes a first tuning circuit, through which the remote grounding point is grounded, the first tuning circuit being used to adjust the resonant mode of the radiating arm connected to the corresponding remote grounding point.

[0016] Optionally, it also includes a second tuning circuit, which is connected between the feed point and the signal source, and is used to adjust the resonance mode of the coverage of the antenna structure.

[0017] Optional, also includes:

[0018] An insulating support, wherein the radiating arm is formed on the insulating support by laser forming technology.

[0019] According to a second aspect of the present disclosure, an electronic device is provided, including an antenna structure as described in any of the above embodiments.

[0020] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0021] As can be seen from the above embodiments, in the technical solution of this disclosure, by setting a far-end grounding point on the radiating arm that is far from the feed point, it is beneficial to maintain the original resonant frequency of the radiating arm while extending the length of the radiating arm, and at the same time, the antenna performance can be enhanced by increasing the radiating area.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0024] Figure 1 This is a schematic diagram of an antenna structure according to an exemplary embodiment.

[0025] Figure 2 yes Figure 1 Circuit diagram of the antenna structure.

[0026] Figure 3 This is a graph showing the antenna efficiency comparison of an antenna structure according to an exemplary embodiment.

[0027] Figure 4 This is a schematic diagram of another antenna structure according to an exemplary embodiment.

[0028] Figure 5 This is a schematic diagram of the structure of an electronic device according to an exemplary embodiment. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0031] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0032] Figure 1 This is a schematic diagram of an antenna structure 100 according to an exemplary embodiment. Figure 2 yes Figure 1 A circuit diagram of antenna structure 100. (See diagram below.) Figure 1 and Figure 2 As shown, the antenna structure 100 may include a first radiating arm 1, a second radiating arm 2, a third radiating arm 3, a feed point 4, a first far-end grounding point 5, and a second far-end grounding point 6. The first radiating arm 1, the second radiating arm 2, and the third radiating arm 3 may extend outward from the same location, which is the connection point of the first radiating arm 1, the second radiating arm 2, and the third radiating arm 3. The feed point 4 may be located at the connection point of the first radiating arm 1, the second radiating arm 2, and the third radiating arm 3, and the feed point 4 may be connected to a signal source. The signal source may include a chip, or it may be a circuit including electronic components such as a power amplifier, an RF module, and a data conversion module. The antenna signal is fed through the feed point 4 and then radiated outward through the first radiating arm 1, the second radiating arm 2, and the third radiating arm 3, or the received electrical signal is fed to an electronic device configuring the antenna structure 100 through the feed point 4.

[0033] The first far-end grounding point 5 and the second far-end grounding point 6 are located at the end of the first radiating arm 1 furthest from the feed point 4. These two points can be electrically connected to the ground plane of the electronic device on which the antenna structure 100 is configured, such as the motherboard ground of the electronic device, or the metal frame or metal casing of the electronic device. This disclosure does not impose any limitations on this. It is understood that by locating the first far-end grounding point 5 and the second far-end grounding point 6 at the end of the first radiating arm 1 furthest from the feed point 4, the distance between the first far-end grounding point 5 and the second far-end grounding point 6 and the feed point 4 can be increased, thereby extending the return path of the antenna signal and thus improving the resonant frequency of the first radiating arm 1. Based on this, the tuning effect of the first far-end grounding point 5 and the second far-end grounding point 6 helps maintain the original resonant frequency of the first radiating arm 1 even when its length is extended. Therefore, without changing the resonant frequency of the first radiating arm 1, the radiation area can be increased by increasing the area of ​​the first radiating arm 1, thereby improving the radiation efficiency of the antenna structure 100.

[0034] Similarly, a third far-end grounding point 7 can be set at the end of the second radiating arm 2 away from the feed point 4, which is beneficial to maintaining the original resonant frequency of the second radiating arm 2 when its length is extended. A fourth far-end grounding point 8 can be set at the end of the third radiating arm 3 away from the feed point 4, which is beneficial to maintaining the original resonant frequency of the third radiating arm 3 when its length is extended. Thus, the antenna performance can be enhanced by increasing the radiation area.

[0035] In one specific embodiment, with Figure 1 As shown, both the first radiating arm 1 and the second radiating arm 2 extend to one side from the feed point 4, and the first radiating arm 1 and the second radiating arm 2 are located on both sides of the feed point 4, that is, at Figure 1 In the illustrated embodiment, both the first radiating arm 1 and the second radiating arm 2 can extend downwards relative to the feed point 4, with the first radiating arm 1 located to the left of the feed point 4 and the second radiating arm 2 located to the right of the feed point 4. An antenna gap is formed between the first radiating arm 1 and the second radiating arm 2. The third radiating arm 3 can extend from the feed point 4 in a direction away from the first radiating arm 1 and the second radiating arm 2. Figure 2 In the embodiment shown, the third radiating arm 3 can extend upwards. Based on the metal pattern traces of the antenna structure 100, by configuring a tuning circuit, the antenna structure 100 can radiate Wifi 2.4G and Wifi 5G signals. At this time, the antenna structure 100 can be a Wifi antenna.

[0036] Taking the Wi-Fi antenna shown in the above embodiment as an example, with a first far-end grounding point 5 and a second far-end grounding point 6 set on the first radiating arm 1, a third far-end grounding point 7 set on the second radiating arm 2, and a fourth far-end grounding point 8 set on the third radiating arm 3, the antenna structure 100 can still radiate Wi-Fi 2.4G and Wi-Fi 5G signals even when the first radiating arm 1 is extended by 5mm-10mm and the second radiating arm 2 is extended by 3mm-9mm, by reasonably configuring the positions of the first far-end grounding point 5, the second far-end grounding point 6, and the third far-end grounding point 7. Figure 3 As shown, curve S1 is the antenna performance curve of antenna structure 100 after extending the length of the first radiating arm 1 and the second radiating arm 2, and adding the first far-end grounding point 5, the second far-end grounding point 6 and the third far-end grounding point 7, while curve S2 is the original antenna performance curve. The vertical axis is the antenna efficiency (dB) and the horizontal axis is the frequency (Hz). It can be seen that the antenna performance shown by curve S1 is better than the antenna efficiency shown by curve S2. That is, the antenna performance of antenna structure 100 can indeed be enhanced by the technical solution of this disclosure.

[0037] It should be noted that in the above embodiments, only the antenna structure 100 is used. Figure 1 or Figure 2 The above example illustrates the wiring configuration. However, in other embodiments, the antenna structure 100 can employ different wiring schemes. For other wiring schemes, by setting a far-end node away from the feed point, the return path can be lengthened, which helps maintain the original resonant mode and increase radiation efficiency even with an extended radiating arm length. Similarly, the above example illustrates the configuration of a first far-end grounding point 5 and a second far-end grounding point 6 on the first radiating arm 1, a third far-end grounding point 7 on the second radiating arm 2, and a fourth far-end grounding point 8 on the third radiating arm 3. In other embodiments, each radiating arm can have one or more far-end grounding points, specifically designed according to the required signal frequency. In particular, setting multiple far-end grounding points on the radiating arm can form multiple parallel return paths, reducing the total impedance on the radiating arm. This is especially beneficial for the high-frequency signal radiated by the radiating arm to find the shortest return path to ground, resulting in a smoother return path for the high-frequency signal. The above description uses the example of the antenna structure 100 including a first radiating arm 1, a second radiating arm 2, and a third radiating arm 3. In other embodiments, the antenna structure 100 may also include one or more radiating arms. When the antenna structure 100 includes multiple radiating arms, at least one remote grounding point may be provided on one or more of the multiple radiating arms. The specific configuration can be adjusted according to actual needs, and this disclosure does not impose any limitations on this.

[0038] In the above embodiments, when the radiation area can be increased while maintaining the original resonant frequency by adjusting the position of the remote grounding point, the first remote grounding point 5, the second remote grounding point 6, the third remote grounding point 7, and the fourth remote grounding point 8 can all be directly grounded; in other embodiments, such as Figure 4 As shown, the antenna structure 100 may further include a first tuning circuit 9, which can be connected between the remote grounding point and the corresponding radiating arm. For example, in the illustrated embodiment, a first tuning circuit 9 can be provided between the first remote grounding point 5 and the first radiating arm 1, and another first tuning circuit 9 can be provided between the third radiating arm 3 and the fourth remote grounding point 8. The first tuning circuit 9 can be used to further adjust the resonant frequency of the corresponding radiating arm to meet equipment requirements. Each first tuning circuit 9 may include several capacitors, inductors, and resistors. The first tuning circuits 9 provided between different radiating arms and remote grounding points can be the same or different. For example, an LC series circuit can be provided between the first remote grounding point 5 and the first radiating arm 1, while an LC parallel circuit can be provided between the third radiating arm 3 and the fourth remote grounding point 8. The specific configuration can be determined according to actual tuning requirements. The first tuning circuit 9 may include an active tuning circuit or a passive tuning circuit.

[0039] Similarly, in some embodiments, especially when the antenna structure 100 is used to radiate ultra-wideband antenna signals, the antenna structure 100 may also include a second tuning circuit. This second tuning circuit can be connected between the feed point 4 and the signal source. The second tuning circuit can adjust the resonant modes that the antenna structure 100 can cover. For example, when the antenna structure 100 is used to radiate 5G signals, the tuning effect of the second tuning circuit can enable the antenna structure 100 to cover the frequency bands N41, N77, and N78, which is beneficial for improving the communication performance of the antenna structure 100 in different application scenarios. The second tuning circuit can include an active tuning circuit or a passive tuning circuit. A passive tuning circuit can reduce the loss of antenna performance, while an active tuning circuit can switch the frequency bands covered by the antenna structure 100 according to different application scenarios, which is beneficial for meeting the diverse needs of application scenarios. In the embodiments provided in this disclosure, the antenna structure 100 is only described as including a Wi-Fi antenna or a 5G antenna. In fact, by adjusting the shape and size of the radiating arm, the capacitance and inductance values ​​in the first tuning circuit 9, and the capacitance and inductance values ​​in the second tuning circuit, the antenna structure 100 can also be used for other antennas, such as GPS antennas. This disclosure does not limit this.

[0040] Furthermore, still based on Figure 4As shown, the antenna structure 100 may further include a first near-end grounding point 10 and a second near-end grounding point 11. The first near-end grounding point 10 is located at the end of the second radiating arm 2 near the feed point 4, and the second near-end grounding point 11 is located at the end of the third radiating arm 3 near the feed point 4. Based on this, on the one hand, the number of return paths for the second radiating arm 2 and the third radiating arm 3 can be further increased, which is beneficial for reducing the impedance of the second radiating arm 2 and the third radiating arm 3; and on the other hand, since both the first near-end grounding point 10 and the second near-end grounding point 11 are close to the feed point 4, a closer return path can be provided for the antenna signal.

[0041] In the above embodiments, the antenna structure 100 may further include a spring clip, and both the far-end grounding point and the near-end grounding point included in the antenna structure 100 can be grounded through the spring clip. For example, the antenna structure 100 may also include an insulating support, and the first radiating arm 1, the second radiating arm 2, and the third radiating arm 3 may be formed on the insulating support by laser forming technology. In this case, the first far-end grounding point 5, the second far-end grounding point 6, the third far-end grounding point 7, the fourth far-end grounding point 8, the first near-end grounding point 10, and the second near-end grounding point 11 can all be grounded through the spring clip. Of course, when the antenna structure 100 includes a patch antenna, the antenna structure 100 may also be grounded by grounding vias and wires, and this disclosure does not impose any limitations on this.

[0042] Based on the technical solution of this disclosure, this disclosure also provides a method such as Figure 5 The electronic device 200 shown may include the antenna structure 100 described in any of the above embodiments. The antenna structure 100 may be disposed at any location within the electronic device 200, for example, as in the embodiments provided in this disclosure, the antenna structure 100 may be disposed at the upper left corner of the electronic device 200. The electronic device 200 may include a mobile phone terminal, a tablet terminal, or a laptop computer.

[0043] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0044] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An antenna structure, characterized in that, include: Radiation arm; A feed point is provided on the radiating arm and is used for electrical connection to a signal source; A remote grounding point is provided at the end of the radiating arm away from the feed point to increase the distance between the remote grounding point and the feed point. The remote grounding point is electrically connected to the ground plane of the electronic device configured with the antenna structure. An insulating support, wherein the radiating arm is formed on the insulating support by laser forming technology; Multiple far-end grounding points are provided on one end of any radiating arm away from the feed point, and the width direction is perpendicular to the extension direction of the radiating arm. The antenna structure includes a first radiating arm, a second radiating arm, and a third radiating arm, and the feed point is located at the connection of the first radiating arm, the second radiating arm, and the third radiating arm. The first near-end grounding point is located on the second radiating arm at one end near the feed point; The second near-end grounding point is located on the third radiating arm at one end near the feed point.

2. The antenna structure according to claim 1, characterized in that, Both the first radiating arm and the second radiating arm extend to one side from the feed point, and the first radiating arm and the second radiating arm are located on both sides of the feed point; The third radiating arm extends from the feed point in a direction away from the first and second radiating arms.

3. The antenna structure according to claim 1, characterized in that, It also includes a spring clip, through which the remote grounding point is grounded.

4. The antenna structure according to claim 1, characterized in that, It also includes a first tuning circuit, through which the remote grounding point is grounded, the first tuning circuit being used to adjust the resonant mode of the radiating arm connected to the corresponding remote grounding point.

5. The antenna structure according to claim 1, characterized in that, It also includes a second tuning circuit, which is connected between the feed point and the signal source, and is used to adjust the resonance mode of the coverage of the antenna structure.

6. An electronic device, characterized in that, The antenna structure includes any one of claims 1-5.

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