Antenna structure and terminal equipment

Abstract

The invention relates to an antenna structure and terminal equipment, the antenna structure comprises a main branch knot and a first branch knot, the first branch knot is arranged at one side, provided with a first feeding point, of the main branch knot at an interval, the first branch knot is provided with a first grounding point, and the antenna structure further comprises a suspension branch knot arranged between the main branch knot and the first branch knot, and the ground current of the first branch knot is far away from the first feeding point of the main branch knot. Thus, the ground return rib position of the parasitic branch is broken and changed into a suspension arrangement form, the first branch and the first grounding point are arranged beside the suspension branch, the parasitic current is guided to return to the ground, the position of the first grounding point is adjusted in the direction away from the first feeding point, and the distance between the ground return current of the first branch and the first feeding point is increased. The current path of the antenna structure is changed, excitation of a return-to-ground current to metal devices near the antenna is avoided, clutters generated in the working frequency band of the antenna structure are reduced, and the radiation performance of the antenna is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to an antenna structure and a terminal device using the antenna structure. Background Art

[0002] With the continuous development of communication technology, antennas are required to cover more and more frequency bands. When multiple antennas are stacked in terminal equipment, the antenna clearance area becomes smaller and smaller. There are many metal devices around the antenna. Under the excitation of electric current, the complex surrounding environment may generate clutter, which becomes a source of interference that affects the radiation performance of the antenna. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides an antenna structure and a terminal device using the antenna structure.

[0004] According to a first aspect of an embodiment of the present disclosure, an antenna structure is provided, comprising a main branch and a first branch, wherein the first branch is arranged at intervals on a side of the main branch where a first feeding point is provided, and the first branch is provided with a first grounding point.

[0005] The antenna structure further includes a suspended branch disposed between the main branch and the first branch, so that the return current of the first branch is away from the first feeding point of the main branch.

[0006] Optionally, the main branch has a first end close to the suspension branch and a second end away from the first end, the first feeding point is arranged close to the first end, and the antenna structure has at least one of the following working modes:

[0007] A first operating mode, a quarter-wavelength mode from the first feeding point to the first end of the main branch;

[0008] A second working mode is a circular current mode from the first feeding point through part of the main branches, the suspended branches, part of the first branches to the first grounding point; and

[0009] The third working mode is a quarter-wavelength mode of the first branch.

[0010] Optionally, the suspended branch has a first end and a second end, a first coupling gap is formed between the first end and the main branch, and a second coupling gap is formed between the second end and the first branch.

[0011] Wherein, the first coupling gap and the second coupling gap are configured as follows:

[0012] The main branch, the suspended branch and the first grounding point form a zero-order mode.

[0013] Optionally, the current directions of some of the main branches, the suspended branches and some of the first branches are the same.

[0014] Optionally, the suspended branch and the first branch are arranged at intervals so that the suspended branch and the first grounding point are disconnected.

[0015] Optionally, the first branch is a long strip structure, and in the length direction, the first grounding point is arranged on a side of the first branch close to the suspended branch.

[0016] Optionally, the first feeding point and the first grounding point generate a signal covering a first operating frequency band, and the main branch is further provided with a second feeding point and a second grounding point to generate a signal covering a second operating frequency band.

[0017] Optionally, the first operating frequency band includes a WIFI 5G frequency band, and the second operating frequency band is a WIFI 2.4G frequency band.

[0018] Optionally, the first operating frequency band also includes a WIFI 6E frequency band.

[0019] Optionally, the main branch is an L-shaped structure, the first feeding point and the second feeding point are arranged on the horizontal segment of the L-shaped structure, the second grounding point is arranged on the vertical segment of the L-shaped structure, and the first feeding point is arranged close to the end of the horizontal segment.

[0020] According to a second aspect of an embodiment of the present disclosure, a terminal device is provided, comprising the above-mentioned antenna structure.

[0021] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the return-to-ground ribs of the parasitic branch are interrupted and changed to a suspended arrangement to form a suspended branch, and a first branch and a first grounding point are arranged next to the suspended branch to guide the parasitic current back to the ground. The signal on the main branch is first coupled to the suspended branch and then coupled to the first branch. The position of the first grounding point is adjusted in a direction away from the first feeding point, thereby increasing the distance between the return-to-ground current of the first branch and the first feeding point, changing the current path of the antenna structure, avoiding the excitation of metal devices near the antenna by the return-to-ground current, and reducing the generation of clutter in the working frequency band of the antenna structure, thereby improving the radiation performance of the antenna structure.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 1 is a schematic diagram showing an antenna structure according to an exemplary embodiment related to the present disclosure.

[0025] Figure 2 is a schematic diagram showing an antenna structure according to an exemplary embodiment.

[0026] Figure 3 is a schematic diagram showing a current path of an antenna structure according to an exemplary embodiment.

[0027] Description of Reference Numerals

[0028] 11-main branch; 12-first branch; 13-suspended branch; 14-parasitic branch; 101-first feeding point; 102-first grounding point; 103-second feeding point; 104-second grounding point; 105-first coupling gap; 106-second coupling gap. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0031] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" are generally used in the drawing directions of the corresponding drawings, and the terms "first" and "second" are used to distinguish different components and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements.

[0032] In the relevant embodiments of the present disclosure, Figure 1As shown, a combo antenna is provided, including a main branch 11, the main branch 11 adopts a dual-feed solution, and is provided with a first feeding point 101 and a second feeding point 103. WIFI 5G is a quarter-wavelength mode from the first feeding point 101 to the end of the main branch 11, and a parasitic branch 14 is added on one side. A first grounding point 102 is provided on the parasitic branch 14, which can form a ring mode (loop mode) from the first feeding point 101 to the return port of the parasitic branch 14, which is used to improve the sideband efficiency of WIFI 5G and expand the bandwidth. However, in this embodiment, the return current of the parasitic branch 14 is close to the first feeding point 101, which will stimulate the surrounding metal devices to generate clutter and affect the radiation performance of WIFI 5G. Here, taking the application of the combo antenna to a mobile phone as an example, the surrounding metal devices can be metal parts such as a mobile phone frame, a camera module or a microphone.

[0033] To solve the above problems, Figure 2 As shown, the present disclosure provides an antenna structure, which includes a main branch 11 and a first branch 12, wherein the main branch 11 is provided with a first feeding point 101, the first branch 12 is arranged at intervals on one side of the main branch 11 where the first feeding point 101 is provided, and the first branch 12 is provided with a first grounding point 102, wherein the antenna structure also includes a suspended branch 13 arranged between the main branch 11 and the first branch 12, so that the return current of the first branch 12 is away from the first feeding point 101 of the main branch 11.

[0034] In the antenna structure provided by the present invention, the return rib position of the parasitic branch 14 is interrupted and changed to a suspended arrangement to form a suspended branch 13. At the same time, a first branch 12 and a first grounding point 102 are arranged next to the suspended branch 13 to guide the parasitic current back to the ground. The signal on the main branch 11 is first coupled to the suspended branch 13 and then coupled to the first branch 12. The position of the first grounding point 102 is adjusted in a direction away from the first feeding point 101, thereby increasing the distance between the return current of the first branch 12 and the first feeding point 101, changing the current path of the antenna structure, avoiding the excitation of metal devices near the antenna by the return current, reducing the generation of clutter in the working frequency band of the antenna structure, and thus improving the radiation performance of the antenna structure.

[0035] like Figure 3As shown, the main branch 11 has a first end close to the suspended branch 13 and a second end away from the first end, and the first feeding point 101 is arranged close to the first end. The antenna structure provided by the present disclosure has at least one of the following working modes: the first working mode, a quarter-wavelength mode from the first feeding point 101 to the first end of the main branch 11, used to generate a signal covering the WIFI5G frequency band; the second working mode, a circular current mode (loop mode) from the first feeding point 101 through part of the main branch 11, the suspended branch 13, and part of the first branch 12 to the first grounding point 102, used to improve the sideband efficiency of the WIFI 5G frequency band and expand the bandwidth; and the third working mode, the quarter-wavelength mode of the first branch 12 can also expand the bandwidth, and accordingly, the antenna structure can generate a signal for covering the WIFI 6E frequency band. Through the above three modes, the antenna structure can not only have good efficiency in the WIFI 5G frequency band, but also have excellent radiation performance in the wider WIFI 6E frequency band.

[0036] In this disclosure, Figure 1 The ground return rib position of the parasitic branch 14 in the illustrated embodiment is interrupted and changed to a suspended arrangement, and a first branch 12 is arranged next to the suspended branch 13, and a first grounding point 102 is arranged on the first branch 12 to guide the parasitic current back to the ground. Further considering that the first grounding point 102 is arranged on the first branch 12, the suspended branch 13 and the first branch 12 are arranged at intervals, so that the suspended branch 13 is disconnected from the first grounding point 102. The first grounding point 102 (current strong point) can be separated from the suspended branch 13, reducing the coupling current on the suspended branch 13, and multiple currents are dispersed, achieving the effect of reducing the SAR value (parabolic indicator, stop loss point turning indicator).

[0037] like Figure 2 As shown, the suspended branch 13 has a first end and a second end, a first coupling gap 105 is formed between the first end and the main branch 11, and a second coupling gap 106 is formed between the second end and the first branch 12. By adjusting the phase of the gap coupling capacitor, part of the main branch 11, the suspended branch 13 and the first grounding point 102 can form a zero-order mode, as shown in FIG. Figure 3As shown, the current directions of some main branches 11, suspended branches 13 and part of the first branches 12 are the same, which increases the radiation length of the current in the same direction, and the field strengths are superimposed on each other, and the radiation performance of WIFI 5G is improved by 0.5-1dB. In addition, the zero-order mode and the quarter-wavelength mode of the newly added first branch 12 broaden the working bandwidth of the antenna structure, so that it has excellent radiation performance in the WIFI 6E frequency band. Here, by adjusting the width of the first coupling slot 105 and the second coupling slot 106, the length or width of the main branch 11, the suspended branch 13 and the first branch 12, etc., the size of the broken slot coupling capacitor can be adjusted, thereby achieving the adjustment of the phase, and it can be designed according to needs.

[0038] In the present disclosure, the main branch 11, the first branch 12 and the suspension branch 13 can be designed as any appropriate structure. In this embodiment, the first branch 12 can be a long strip structure, and in the length direction, the first grounding point 102 is set on the side of the first branch 12 close to the suspension branch 13. The length of the first branch 12 and the relative position of the first grounding point 102 and the first branch 12 can be adjusted as needed.

[0039] like Figure 2 As shown, in the present disclosure, the first feeding point 101 and the first grounding point 102 generate a signal for covering the first working frequency band, and the first working frequency band includes the WIFI 5G frequency band. Of course, as described above, the frequency band covered by the antenna structure can be broadened through the zero-order mode and the quarter-wavelength mode of the first branch 12. Accordingly, the first working frequency band also includes the WIFI 6E frequency band. The main branch 11 is also provided with a second feeding point 103 and a second grounding point 104 to generate a signal for covering the second working frequency band, wherein the second working frequency band can be the WIFI 2.4G frequency band.

[0040] In this embodiment, the main branch 11 can be an L-shaped structure, the first feeding point 101 and the second feeding point 103 are arranged on the horizontal section of the L-shaped structure, the second grounding point 104 is arranged on the vertical section of the L-shaped structure, and the first feeding point 101 is arranged near the end of the horizontal section. In other embodiments, the main branch 11 can also be a long strip, and the positions of the first feeding point 101, the second feeding point 103 and the second grounding point 104 can be adjusted and arranged as needed.

[0041] In the antenna structure provided by the present invention, a suspended branch 13 is added at the end of a traditional combo antenna to generate a co-directional current and construct a zero-order mode, which can improve the overall radiation performance of the WIFI 5G frequency band; a first branch 12 and a first grounding point 102 are added next to the suspended branch 13 for ground return, and the current is guided back to the ground at a position far away from the combo antenna to avoid exciting metal devices around the antenna structure and generating clutter that affects the radiation performance of the WIFI 5G; at the same time, the suspended branch 13 and the first grounding point 102 are separated, and the suspended branch 13 is away from strong current to reduce the coupling current on the suspended branch 13, disperse multiple currents, and achieve the effect of reducing the SAR value.

[0042] According to the second aspect of the present disclosure, a terminal device is also provided, which may be a mobile phone, a computer, a tablet or various wearable devices, etc. The terminal device includes the antenna structure described above. The terminal device has all the beneficial effects of the above antenna structure, which will not be described in detail here. The terminal device can ensure the radiation performance of the WIFI 5G band and the WIFI 2.4G band, and also has good radiation performance in the wider WIFI 6E band.

[0043] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the present disclosure. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0044] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An antenna structure, characterized in that: It comprises a main branch and a first branch, wherein the first branch is arranged at intervals on one side of the main branch where a first feeding point is provided, and the first branch is provided with a first grounding point. The antenna structure further includes a suspended branch disposed between the main branch and the first branch, so that the return current of the first branch is away from the first feeding point of the main branch.

2. The antenna structure according to claim 1, characterized in that: The main branch has a first end close to the suspension branch and a second end away from the first end, the first feeding point is arranged close to the first end, and the antenna structure has at least one of the following working modes: A first operating mode, a quarter-wavelength mode from the first feeding point to the first end of the main branch; A second working mode is a circular current mode from the first feeding point through part of the main branches, the suspended branches, part of the first branches to the first grounding point; as well as The third working mode is a quarter-wavelength mode of the first branch.

3. The antenna structure according to claim 2, characterized in that: The suspended branch has a first end and a second end, a first coupling gap is formed between the first end and the main branch, and a second coupling gap is formed between the second end and the first branch. Wherein, the first coupling gap and the second coupling gap are configured as follows: the main branch, the suspended branch and the first grounding point form a zero-order mode.

4. The antenna structure according to claim 3, characterized in that: The current directions of some of the main branches, the suspended branches and some of the first branches are the same.

5. The antenna structure according to claim 1, characterized in that: The suspended branch node and the first branch node are arranged at intervals, so that the suspended branch node and the first grounding point are disconnected from each other.

6. The antenna structure according to claim 1, characterized in that: The first branch is a long strip structure, and in the length direction, the first grounding point is arranged on a side of the first branch close to the suspension branch.

7. The antenna structure according to any one of claims 1 to 6, characterized in that: The first feeding point and the first grounding point generate a signal covering a first operating frequency band, and the main branch is further provided with a second feeding point and a second grounding point to generate a signal covering a second operating frequency band.

8. The antenna structure according to claim 7, characterized in that: The first working frequency band includes the WIFI 5G frequency band, and the second working frequency band is the WIFI 2.4G frequency band.

9. The antenna structure according to claim 8, characterized in that: The first operating frequency band also includes a WIFI 6E frequency band.

10. The antenna structure according to claim 7, characterized in that: The main branch is an L-shaped structure, the first feeding point and the second feeding point are arranged on the horizontal section of the L-shaped structure, the second grounding point is arranged on the vertical section of the L-shaped structure, and the first feeding point is arranged close to the end of the horizontal section.

11. A terminal device, characterized in that: The invention comprises the antenna structure according to any one of claims 1 to 10.

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