Antenna structure and electronic equipment

Abstract

This disclosure relates to an antenna structure and an electronic device. The antenna structure includes: an antenna support; multiple antenna branches, all of which are disposed on the antenna support and are adjacent to each other to form a loop antenna; wherein the multiple antenna branches are arranged parallel in the thickness direction, and adjacent antenna branches are partially stacked and spaced apart in the thickness direction, and the antenna structure covers multiple frequency bands.

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] Now that we have entered the 5G era, the transmission speed is even higher than that of 4G. The high-speed information transmission has increased the requirements for the number of antennas. The increased functionality of smart devices has led to an increase in the number of components, which further squeezes antenna space. Therefore, the design of antennas with multi-band coverage has become a key research and development focus. Utility Model Content

[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] Antenna support;

[0006] Multiple antenna branches are provided on the antenna support, and the multiple antenna branches are adjacent to each other to form a loop antenna.

[0007] The antenna branches are arranged in parallel along their thickness direction, and are partially stacked and spaced apart between adjacent antenna branches along the thickness direction. The antenna structure covers multiple frequency bands.

[0008] Optionally, the multiple antenna branches include a head branch and an end branch, wherein the head branch is electrically connected to the feed, and the end branch is grounded.

[0009] Optionally, in the thickness direction, the first branch and the last branch are stacked at their closest points and spaced apart.

[0010] Optionally, the multiple antenna branches include at least one intermediate branch, the two ends of which are stacked and spaced apart from adjacent antenna branches.

[0011] Optionally, the multiple antenna branches include two intermediate branches, which are stacked at their close ends and spaced apart. One intermediate branch and the first branch are stacked at their close ends and spaced apart, while the other intermediate branch and the last branch are stacked at their close ends and spaced apart.

[0012] Optionally, one of the intermediate branches includes a first corner area, and the first end branch includes a second corner area, wherein the first corner area and the second corner area are stacked and spaced apart.

[0013] Optionally, one of the intermediate branches includes a third corner area, and the terminal branch includes a fourth corner area, wherein the third corner area and the fourth corner area are stacked and spaced apart.

[0014] Optionally, the antenna structure covers the N77, N78 and N79 frequency bands.

[0015] Optionally, the antenna structure can be an LDS antenna structure, a PDS antenna structure, or an FPC antenna structure.

[0016] According to a second aspect of the present disclosure, an electronic device is provided, including an antenna structure as described in any of the foregoing embodiments.

[0017] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0018] As can be seen from the above embodiments, in this disclosure, two adjacent antenna branches are partially stacked and spaced apart, so that a coupling region can be formed between any two adjacent antenna branches, thereby increasing the coupling region of the antenna structure and adjusting the resonance corresponding to the loop antenna structure. Compared with the traditional loop antenna, it is beneficial to increase the resonance mode of the antenna structure, thereby increasing the bandwidth of the antenna structure, so that the antenna structure can cover multiple frequency bands and save equipment space.

[0019] 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

[0020] 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.

[0021] Figure 1 This is a top view schematic diagram illustrating an antenna structure according to an exemplary embodiment.

[0022] Figure 2 This is a top view schematic diagram illustrating another antenna structure according to an exemplary embodiment.

[0023] Figure 3 This is a top view schematic diagram illustrating yet another antenna structure according to an exemplary embodiment.

[0024] Figure 4 This is a three-dimensional schematic diagram of an antenna structure according to an exemplary embodiment.

[0025] Figure 5 yes Figure 4 Another angle of the antenna structure.

[0026] Figure 6 This is a comparison diagram of the reflection coefficient curve of an antenna structure according to an exemplary embodiment and the reflection coefficient curve of a conventional loop antenna.

[0027] Figure 7 This is a comparison chart of the radiation efficiency curve of an antenna structure according to an exemplary embodiment and the radiation efficiency curve of a conventional loop antenna. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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."

[0031] Figure 1 This is a top view schematic diagram illustrating an antenna structure according to an exemplary embodiment. For example... Figure 1 As shown, the antenna structure includes an antenna support 1, a first-end branch 2, and a last-end branch 3. Both the first-end branch 2 and the last-end branch 3 are mounted on the antenna support 1, and they can be arranged end-to-end to form a loop antenna. Furthermore, the first-end branch 2 and the last-end branch 3 are parallel in their thickness direction, meaning they are both laid flat on the antenna support 1. In the thickness direction, the first-end branch 2 and the last-end branch 3 are partially stacked and spaced apart, for example... Figure 1As shown, the first branch 2 and the last branch 3 are stacked at their closest ends and spaced apart, so that a coupling region can be formed between the first branch 2 and the last branch 3. For example, the first branch 2 can be connected to the power supply, and the last branch 3 can be grounded. Then the current fed into the antenna branch 2 through the power supply can be coupled to the last branch 3 through the gap and then grounded.

[0032] With this configuration, the resonance of the loop antenna structure can be adjusted by using the terminal branch 3 as a coupling stub of the head branch 2. Compared to traditional loop antennas, this increases the number of resonant modes of the antenna structure, thereby increasing its bandwidth and enabling it to cover multiple frequency bands. It also helps reduce the number of antennas and thus lowers the space requirements for electronic equipment. Antenna structures include LDS (Laser-Direct-structuring), PDS (Printing Direct Structure), or FPC (Flexible Printed Circuit) antenna structures.

[0033] exist Figure 1 In the illustrated embodiment, the antenna structure is illustrated using the first antenna branch 2 and the last antenna branch 3 as examples. In other embodiments, the antenna structure may also include three or more antenna branches, which can be adjacent to each other to form a loop antenna. The thickness directions of the three or more antenna branches are parallel, and adjacent antenna branches are partially stacked and spaced apart, thus forming a coupling region between any two adjacent antenna branches. This increases the number of coupling regions in the antenna structure, which is beneficial for adjusting the coverage bandwidth of the antenna structure, allowing it to cover multiple frequency bands. An insulating element can be provided between the spaced-apart antenna branches for connection.

[0034] For example, such as Figure 2 As shown, the antenna structure also includes a first intermediate branch 4. In the thickness direction, one end of the first intermediate branch 4 is partially stacked with the first end branch 2 and spaced apart, and the other end is partially stacked with the last end branch 3 and spaced apart. In this way, the number of coupling areas can be increased by the first intermediate branch 4, which is beneficial to adjust the bandwidth of the antenna structure without changing the size parameters of the loop antenna shape.

[0035] For example, such as Figures 3-5As shown, the antenna structure includes a first intermediate branch 4 and a second intermediate branch 5. The first intermediate branch 4 and the second intermediate branch 5 are stacked at their closest points and spaced apart. The first intermediate branch 4 and the first-end branch 2 are stacked at their closest points and spaced apart. The second intermediate branch 5 and the last-end branch 3 are stacked at their closest points and spaced apart. Of course, as... Figure 3 In the embodiment shown, the widths of the first branch 2, the last branch 3, the first intermediate branch 4, and the second intermediate branch 5 may not be equal, or as follows: Figure 4 and Figure 5 In the embodiment shown, the widths of the first branch 2, the last branch 3, the first intermediate branch 4, and the second intermediate branch 5 can also be equal, and the specific design can be made according to actual needs.

[0036] The above description uses the antenna structure including three antenna branches and four antenna branches as examples. Of course, in other embodiments, the antenna structure may also include three or more intermediate branches, thereby constructing an antenna structure with five or more antenna branches. In an antenna structure including at least one intermediate branch, the two ends of any intermediate branch can be stacked and spaced apart from adjacent antenna branches to construct the required coupling area.

[0037] In some embodiments, based on Figure 3 and Figure 5 The antenna structure shown can be matched to obtain... Figure 6 The reflection coefficient curves shown are illustrated, where the dashed line represents the reflection coefficient curve of the embodiment of this disclosure, and the solid line represents the reflection coefficient curve of a conventional loop antenna. Comparing the two reflection coefficient curves, it can be seen that, compared to a conventional loop antenna, the embodiment of this disclosure can add a resonator near 4GHz, essentially achieving full coverage in the 3.3GHz-5GHz range. This allows the antenna structure to cover the N77, N78, and N79 frequency bands, reducing the antenna quantity requirements for 5G antenna communication.

[0038] Further as Figure 7 As shown, the dashed line represents the radiation efficiency curve of the antenna structure in this embodiment, while the solid line represents the radiation efficiency curve of a conventional loop antenna. The comparison reveals that the radiation efficiency of this embodiment is improved in most areas within the 3.3GHz-5GHz range, and the peak improvement is significantly greater than the peak reduction in some local areas. Therefore, the radiation efficiency of this embodiment can be improved to a certain extent.

[0039] In some embodiments, still with Figure 3As shown, the first intermediate branch 4 includes a first corner region 41, and the first-end branch 2 includes a second corner region 21. The first corner region 41 and the second corner region 21 are stacked and spaced apart. Thus, a coupling region is formed between the first intermediate branch 4 and the first-end branch 2 in the corner region. Utilizing the orthogonal current direction formed in the corner region enhances the magnetic flux of the corner region itself, thereby forming a coupling region. This ensures the reliability of the coupling and also enhances the current intensity on the coupled branches, improving communication performance.

[0040] Still with Figure 3 As shown, the second intermediate branch 5 includes a third corner area 51, and the terminal branch 3 includes a fourth corner area 31. The third corner area 51 and the fourth corner area 31 are stacked and spaced apart. This ensures the reliability of the coupling and improves communication performance.

[0041] Of course, this is based on Figure 3 The illustrated embodiment provides an exemplary description of an implementation where the corner area serves as the coupling area. Of course, in other examples, a first corner area may be provided on the intermediate branch adjacent to the first branch 2, and a third corner area may be provided on the intermediate branch adjacent to the last branch 3. The design can be customized as needed, and this disclosure does not impose any limitations on this. The intermediate branch adjacent to the first branch 2 and the intermediate branch adjacent to the last branch 3 can be the same intermediate branch or different intermediate branches; this disclosure does not impose any limitations on this.

[0042] Based on the technical solutions disclosed herein, an electronic device is also provided, which may include the antenna structure described in any of the foregoing embodiments. The electronic device may include mobile phones, laptops, tablets, wearable devices, etc.

[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: Antenna support; Multiple antenna branches are provided on the antenna support, and the multiple antenna branches are adjacent to each other to form a loop antenna. The antenna branches are arranged in parallel along their thickness direction, and are partially stacked and spaced apart between adjacent antenna branches along the thickness direction. The antenna structure covers multiple frequency bands.

2. The antenna structure according to claim 1, characterized in that, The multiple antenna branches include a head branch and an end branch. The head branch is electrically connected to the feed power supply, and the end branch is grounded.

3. The antenna structure according to claim 2, characterized in that, In the thickness direction, the first branch and the last branch are stacked at their closest points and spaced apart.

4. The antenna structure according to claim 2, characterized in that, The multiple antenna branches include at least one intermediate branch, the two ends of which are stacked and spaced apart from adjacent antenna branches.

5. The antenna structure according to claim 4, characterized in that, The multiple antenna branches include two intermediate branches, which are stacked at their closest points and spaced apart. One intermediate branch and the first branch are stacked at their closest points and spaced apart, while the other intermediate branch and the last branch are stacked at their closest points and spaced apart.

6. The antenna structure according to claim 4, characterized in that, One of the intermediate branches includes a first corner area, and the first end branch includes a second corner area. The first corner area and the second corner area are stacked and spaced apart.

7. The antenna structure according to claim 4, characterized in that, One of the intermediate branches includes a third corner area, and the terminal branch includes a fourth corner area. The third corner area and the fourth corner area are stacked and spaced apart.

8. The antenna structure according to claim 1, characterized in that, The antenna structure covers the N77, N78 and N79 frequency bands.

9. The antenna structure according to claim 1, characterized in that, The antenna structure is an LDS antenna structure, a PDS antenna structure, or an FPC antenna structure.

10. An electronic device, characterized in that, The antenna structure includes any one of claims 1-9.

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