Antenna structure and electronic equipment
By setting back ground ribs in the antenna breaks and setting metal units and gaps between them, an equivalent LC series circuit is formed, which solves the problem of insufficient isolation of adjacent antennas under the ultimate space design, and improves the isolation and radiation efficiency of the antenna.
Patent Information
- Application Number
- CN202422076695.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-26
AI Technical Summary
Under the ultimate space design, the width of the back rib strips in the prior art is limited, resulting in insufficient isolation between adjacent antennas, affecting the isolation effect.
A back rib is arranged in the breaking slot, and multiple metal units are arranged at intervals on the back ribs. A gap is formed between adjacent metal units to form an equivalent LC series circuit to increase impedance and thereby improve isolation.
By increasing the metal unit and gap design of the back reinforcement, the isolation between adjacent antennas is improved, the radiation performance of the antenna is improved, and the isolation is increased by 2.8dB.
Smart Images
Figure CN223079350U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of terminals, and in particular, to an antenna structure and an electronic device. Background Art
[0002] For the antenna layout of existing devices, in order to reduce the isolation between adjacent antennas, it is usually to set a ground return rib between adjacent antennas. The width of the ground return rib will also affect the isolation effect to a certain extent. However, in the context of extreme space design, the width of the ground return rib cannot be infinitely large, which results in a general isolation effect of the ground return rib. Summary of the Utility Model
[0003] The present disclosure provides an antenna structure and an electronic device to solve the deficiencies in the related art.
[0004] According to the first aspect of the embodiments of the present disclosure, an antenna structure is provided, including:
[0005] A first radiation arm;
[0006] A second radiation arm, the second radiation arm and the first radiation arm cooperate to form a slit, and the direction of the first radiation arm pointing to the second radiation arm is the first direction;
[0007] A ground return rib, the ground return rib is partially located in the slit;
[0008] The ground return rib is provided with a plurality of metal units spaced apart in the first direction, and a gap is formed between adjacent metal units, and the depth direction of the gap is perpendicular to the first direction.
[0009] Optionally, the ground return rib is provided with multiple rows and multiple columns of the metal units, wherein the row direction is the first direction, and the column direction, the row direction, and the depth direction of the gap are perpendicular to each other in pairs.
[0010] Optionally, the ground return rib is provided with five rows and six columns of metal units.
[0011] Optionally, the cross-sectional areas of the plurality of metal units are the same or different.
[0012] Optionally, in the first direction, the length of the metal unit is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.
[0013] Optionally, in the first direction, the length of the gap is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.
[0014] Optionally, at least part of the operating frequency band range of the first radiation arm and the operating frequency band range of the second radiation arm overlap.
[0015] Optionally, each of the metal units and an adjacent single gap are equivalent to an LC series circuit, and a resonance frequency point of the LC series circuit is located within a working frequency band range of the first radiating arm and outside a working frequency band of the second radiating arm.
[0016] Optionally, it further includes:
[0017] A first insulating medium, which is disposed between the first radiating arm and the ground reinforcing rib and between the second radiating arm and the ground reinforcing rib;
[0018] A second insulating medium, which is disposed between the second radiating arm and the ground reinforcing rib.
[0019] According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, including the antenna structure described in any one of the above embodiments.
[0020] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:
[0021] As can be seen from the above embodiments, the metal units and gaps of the ground reinforcing rib in the present disclosure can be equivalent to the impedance between the first radiating arm and the second radiating arm, thereby improving the isolation between the first radiating arm and the second radiating arm and enhancing the radiation performance of the antenna structure.
[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.
[0024] Figure 1 is a schematic structural diagram of an antenna structure shown according to an exemplary embodiment.
[0025] Figure 2 is a schematic structural diagram of a ground reinforcing rib shown according to an exemplary embodiment.
[0026] Figure 3 is an equivalent circuit diagram shown according to an exemplary embodiment.
[0027] Figure 4 is a simulation curve diagram of an antenna structure shown according to an exemplary embodiment.
[0028] Figure 5 is a front view of a ground reinforcing rib shown according to an exemplary embodiment.
[0029] Figure 6It is a schematic structural diagram of another antenna structure shown according to an exemplary embodiment. Detailed implementation manners
[0030] Here, the exemplary embodiments will be described in detail, and the examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0031] The terms used in the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present 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.
[0032] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".
[0033] Figure 1 It is a schematic structural diagram of an antenna structure shown according to an exemplary embodiment. Figure 2 It is a schematic structural diagram of a ground return rib shown according to an exemplary embodiment. As Figure 1 and Figure 2 shown, the antenna structure includes a first radiation arm 1, a second radiation arm 2, and a ground return rib 3. A slot is formed by the cooperation between the first radiation arm 1 and the second radiation arm 2, and the ground return rib 3 is partially disposed in the slot. Wherein, taking the direction from the first radiation arm 1 to the second radiation arm 2 as the first direction, as Figure 1 shown in, the first direction is the left - right direction. The ground return rib 3 is provided with a plurality of metal units 31 spaced apart in the first direction, and a gap 32 is formed between adjacent metal units 31. The depth direction of the gap 32 is perpendicular to the first direction. For example, Figure 1 shown in, the depth direction of the gap 32 is the up - down direction. Among them, the cross - sectional areas of the plurality of metal units 31 may be the same or different, and the present disclosure does not limit this.
[0034] From an electrical perspective, the metal unit 31 of the ground return rib 3 can be equivalent to an inductor, and the gap 32 can be equivalent to a capacitor. Therefore, as Figure 3 shown, the ground return rib 3 can be equivalent to a plurality of series LC circuits disposed between the first radiation arm 1 and the second radiation arm 2, which is equivalent to adding a band-stop circuit between the first radiation arm 1 and the second radiation arm 2, increasing the equivalent impedance between the first radiation arm 1 and the second radiation arm 2, thereby improving the isolation between the first radiation arm 1 and the second radiation arm 2.
[0035] For example, taking the case where the first radiation arm 1 covers the Wifi 2.4G band and the second radiation arm 2 covers the medium and high frequency bands as an example, since the coverage frequency ranges of the first radiation arm 1 and the second radiation arm 2 overlap, the performance in the same frequency band is greatly affected. Based on the ground return rib 3 having five rows and six columns of metal units 31, the Figure 4 simulation parameter curves shown are obtained. The green curve is the return loss curve of the second radiation arm 2, the red curve is the return loss curve of the first radiation arm 1, the blue curve is the isolation curve between the first radiation arm 1 and the second radiation arm 2 in the present disclosure, and the orange curve is the isolation curve between the first radiation arm 1 and the second radiation arm 2 in the related art. Among them, the two isolation curves are obtained by simulation under the condition that the size data of the ground return rib 3 is the same. Therefore, by comparison, it can be seen that within the overlapping frequency range of the first radiation arm 1 and the second radiation arm 2, through the design of the metal unit 31 and the gap 32, the isolation between the first radiation arm 1 and the second radiation arm 2 can be increased from -12.9 dB to -15.7 dB, an increase of about 2.8 dB, which is beneficial to improving the radiation efficiency of the first radiation arm 1 and the second radiation arm 2.
[0036] The above is only described by taking the case where the first radiation arm 1 covers the Wifi 2.4G band, the second radiation arm 2 covers the medium and high frequency bands, and the operating frequency bands between the two radiation arms overlap as an example. In other embodiments, the first radiation arm 1 may also cover other frequency bands, the second radiation arm 2 may also cover other frequency bands, and at least part of the operating frequency band range of the first radiation arm and the operating frequency band range of the second radiation arm overlap.
[0037] Taking the metal unit 31 with five rows and six columns as an example for illustration, in other embodiments, the ground return rib 3 may be provided with multiple rows and multiple columns of metal units 31. Among them, the row direction of the multiple rows and multiple columns of metal units 31 is the first direction, and the column direction is perpendicular to the row direction and the depth direction of the gap 32 in pairs. In still some other embodiments, the ground return rib 3 may be provided with a single row and multiple columns of metal units 31. The number of metal units 31 can be adaptively designed according to the operating frequency band of the first radiation arm and the operating frequency band of the second radiation arm. For example, each metal unit 31 and the adjacent single gap are equivalent to an LC series circuit, and the resonant frequency point of the LC series circuit is outside the operating frequency bands of the first radiation arm 1 and the second radiation arm 2.
[0038] In some embodiments
[0039] , in the first direction, the length of the metal unit 31 is greater than or equal to 0.3 mm and less than or equal to 0.7 mm. As Figure 5 shown, 0.3 mm ≤ L1 ≤ 0.7 m. For example, the length of the metal unit 31 can be equal to 0.4 mm, 0.5 mm, 0.65 mm, etc. In the first direction, the length of the gap 32 is greater than or equal to 0.05 mm and less than or equal to 0.2 mm. As Figure 5 shown, 0.05 mm ≤ L2 ≤ 0.2 m. For example, the length of the gap 32 can be equal to 0.1 mm, 0.15 mm, 0.18 mm, etc.
[0040] In some embodiments, as Figure 6 shown, the antenna structure further includes a first insulating medium 4 and a second insulating medium 5. The first insulating medium 4 is disposed between the first radiation arm 1 and the ground return rib 3; the second insulating medium 5 is disposed between the second radiation arm 2 and the ground return rib 3, so as to fill the gaps between the ground return rib 3 and the first radiation arm 1 and the second radiation arm 2, thereby improving the strength. Of course, in still some other embodiments, the ground return rib 3 may also be connected to the end forming a slit with one of the first radiation arm 1 and the second radiation arm 2, and spaced from the end forming a slit with the other. In order to improve the strength of the ground return rib 3 itself, an insulating material may also be filled in the gap 32, and the specific material is not limited in this disclosure.
[0041] Based on the technical solution of the present disclosure, an electronic device is further provided. The electronic device may include the antenna structure described in any one of the above embodiments, and the first radiation arm 1 and the second radiation arm 2 respectively form a part of the outer frame of the electronic device. The electronic device may include a mobile phone, a tablet device, etc.
[0042] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the disclosure herein. 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 known common general knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.
[0043] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.
Claims
1. An antenna structure, characterized in that, Comprising: A first radiation arm; A second radiation arm, the second radiation arm and the first radiation arm cooperate to form a slot, and the direction of the first radiation arm pointing to the second radiation arm is the first direction; A ground return rib, and a part of the ground return rib is located in the slot; The ground return rib is provided with a plurality of metal units spaced in the first direction, and a gap is formed between adjacent metal units, and the depth direction of the gap is perpendicular to the first direction.
2. The antenna structure according to claim 1, wherein The ground return rib is provided with multiple rows and multiple columns of the metal units, wherein the row direction is the first direction, and the column direction, the row direction, and the depth direction of the gap are perpendicular to each other in pairs.
3. The antenna structure according to claim 2, wherein The ground return rib is provided with five rows and six columns of metal units.
4. The antenna structure according to claim 2, wherein The cross-sectional areas of the plurality of metal units are the same or different.
5. The antenna structure according to claim 1, characterized in that, In the first direction, the length of the metal unit is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.
6. The antenna structure according to claim 1, wherein, In the first direction, the length of the gap is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.
7. The antenna structure according to claim 1, wherein The operating frequency band range of the first radiation arm and the operating frequency band range of the second radiation arm at least partially overlap.
8. The antenna structure according to claim 1, wherein Each of the metal units and the adjacent single gap is equivalent to an LC series circuit, and the resonance frequency point of the LC series circuit is located outside the operating frequency band range of the first radiation arm and the operating frequency band range of the second radiation arm.
9. The antenna structure according to claim 1, wherein Further comprising: A first insulating medium, the first insulating medium is disposed between the first radiation arm and the ground return rib and between the second radiation arm and the ground return rib; A second insulating medium, the second insulating medium is disposed between the second radiation arm and the ground return rib.
10. An electronic device, characterized in that, An antenna structure according to any one of claims 1-9.