Antenna structure and electronic device

Abstract

The present disclosure relates to an antenna structure and an electronic device. The antenna structure comprises an antenna support, a radiator shaped on a surface of the antenna support, the radiator comprising a first radiation arm, a second radiation arm, a third radiation arm, a fourth radiation arm, a fifth radiation arm and a hollow region, the first radiation arm and the second radiation arm are oppositely arranged, the third radiation arm and the fourth radiation arm are oppositely arranged, the first radiation arm and the second radiation arm are connected to the third radiation arm and the fourth radiation arm respectively to form the hollow region, the third radiation arm comprises a first branch located between the first radiation arm and the second radiation arm and a second branch protruding from the second radiation arm, the fifth radiation arm is connected to the first radiation arm and extends into the hollow region, a feed point is arranged at one end of the fourth radiation arm close to the second radiation arm, and a grounding point is arranged at one end of the second radiation arm close to the third radiation arm.

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] To adapt to the application and development of 5G technology, current electronic devices typically need to be equipped with dedicated 5G antennas for 5G communication. At the same time, in order to meet wireless transmission and other communication needs, other antennas are also required to achieve communication.

[0003] In related technologies, to increase the frequency coverage of an antenna structure, multiple feed points and multiple ground points are typically configured to change the current flow and construct different resonant modes. However, as the number of feed points and ground points increases, the number of metal contacts on the motherboard and feed points also increases, thus increasing the area occupied by the motherboard and internal electronic equipment. Summary of the Invention

[0004] This disclosure provides an antenna structure and electronic device to address the shortcomings of related technologies.

[0005] According to a first aspect of the present disclosure, an antenna structure is provided, comprising:

[0006] Antenna support;

[0007] A radiator is formed on the surface of the antenna support. The radiator includes a first radiating arm, a second radiating arm, a third radiating arm, a fourth radiating arm, a fifth radiating arm, and a hollow region. The first and second radiating arms are arranged opposite each other, and the third and fourth radiating arms are arranged opposite each other. The first and second radiating arms are respectively connected to the third and fourth radiating arms to form the hollow region. The third radiating arm includes a first branch located between the first and second radiating arms and a second branch protruding from the second radiating arm. The fifth radiating arm is connected to the first radiating arm and extends into the hollow region.

[0008] Feed point, wherein the feed point is located at one end of the fourth radiating arm near the second radiating arm;

[0009] A grounding point is provided at one end of the second radiating arm near the third radiating arm;

[0010] The radiator is used to construct various current paths to excite resonant modes at different operating frequencies.

[0011] Optionally, the antenna structure covers the B32 band, N41 band, N77 band, N78 band, N79 band, WIFI 2.4 band, WIFI 5G band and WIFI 6E band.

[0012] Optionally, the resonant mode includes a first resonant mode covering the N78 frequency band, wherein the first resonant mode includes a half-wavelength mode formed by the first radiating arm and the first stub, and a half-wavelength mode formed by the second radiating arm and the first stub.

[0013] Optionally, the resonant mode includes a second resonant mode covering the N79 frequency band, the second resonant mode including a half-wavelength mode formed by the first radiating arm, the fifth radiating arm and the fourth radiating arm.

[0014] Optionally, the resonant mode includes a third resonant mode covering the B32 frequency band, the third resonant mode including a quarter-wavelength mode formed at the ground point from the first stub to the second radiating arm, and a quarter-wavelength mode formed by the first radiating arm, the fourth radiating arm, and the second radiating arm.

[0015] Optionally, the resonant mode includes a fourth resonant mode covering the WIFI 2.4 band and the N41 band. The fourth resonant mode includes a half-wavelength mode formed by the fourth radiating arm, the second radiating arm and the second branch, and a half-wavelength mode formed by the first radiating arm and the third radiating arm.

[0016] Optionally, the resonant mode includes a fifth resonant mode covering the WIFI 5G band and the WIFI 6E band. The fifth resonant mode includes a half-wavelength mode of the fourth radiating arm, a half-wavelength mode formed by the first radiating arm and the fifth radiating arm, and a half-wavelength mode formed by the first radiating arm and the first branch.

[0017] Optionally, the resonant mode includes a sixth resonant mode covering the N77 frequency band. The sixth resonant mode includes a half-wavelength mode formed by the first radiating arm, the fifth radiating arm, and the fourth radiating arm; a half-wavelength mode formed by the first radiating arm and the first stub; and a half-wavelength mode formed by the second radiating arm and the first stub.

[0018] Optionally, the length of the first radiating arm is equal to 0.1λ, the length of the fourth radiating arm is equal to 0.145λ, the length of the second branch is equal to 0.1λ, and the extension length of the fifth radiating arm is 0.065λ.

[0019] Wherein, λ is the free-space wavelength corresponding to the center frequency of N78.

[0020] According to a second aspect of the present disclosure, an electronic device is provided, including an antenna structure as described in any one of the above embodiments.

[0021] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0022] As can be seen from the above embodiments, this disclosure, by combining the asymmetric structure of the radiator with the internal branches of the fifth radiating arm formed in the hollow region through the "one feed, one ground" method, can construct multiple different current paths for the radiator to excite the radiator to generate resonant modes in different operating frequency bands, thereby widening the coverage of the antenna structure. Compared with the related technology that increases the number of grounding points to change the current direction in order to increase the resonant modes, this can reduce the number of springs connecting the antenna structure and the motherboard in the electronic device, saving motherboard space and internal space of the electronic device.

[0023] 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

[0024] 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.

[0025] Figure 1 This is a cross-sectional schematic diagram of an antenna structure according to an exemplary embodiment.

[0026] Figure 2 This is a top view of a radiator according to an exemplary embodiment.

[0027] Figure 3 This is a top view of another radiator according to an exemplary embodiment.

[0028] Figure 4 yes Figure 3 Dimensions of the radiator.

[0029] Figure 5 This is a simulation diagram of an antenna structure according to an exemplary embodiment, shown in Figure S11.

[0030] Figure 6 This is an example of an antenna structure and a current distribution diagram.

[0031] Figure 7 This is another current distribution diagram of an antenna structure according to an exemplary embodiment.

[0032] Figure 8 This is an example of an antenna structure and a current distribution diagram, as shown in an exemplary embodiment.

[0033] Figure 9 This is an antenna structure and a current distribution diagram illustrated according to an exemplary embodiment.

[0034] Figure 10 This is an example of an antenna structure and another current distribution diagram, as shown in an exemplary embodiment. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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."

[0038] Figure 1 This is a cross-sectional schematic diagram of an antenna structure 100 according to an exemplary embodiment. Figure 2 This is a top view of a radiator 2 according to an exemplary embodiment. (e.g.) Figure 1 and Figure 2As shown, the antenna structure 100 may include an antenna support 1, a radiator 2, a feed point 3, and a ground point 4. The radiator 2 can be formed on the surface of the antenna support 1, for example, by laser forming technology. The feed point 3 and the ground point 4 can both be disposed on the radiator 2. Subsequently, the feed point 3 can be electrically connected to the motherboard of the electronic device configuring the antenna structure 100 via a metal spring or other conductive component, thereby feeding in an electrical signal. The ground point 4 can be subsequently electrically connected to the metal ground of the electronic device configuring the antenna structure 100 via a metal spring or conductive component. A single ground point 4 and a single feed point 3 can be disposed on the radiator 2 to reduce the number of metal springs that subsequently connect the ground point 4 and the feed point 3 to the motherboard.

[0039] The radiator 2 may include a first radiating arm 21, a second radiating arm 22, a third radiating arm 23, a fourth radiating arm 24, a fifth radiating arm 25, and a hollow region 26. The first and second radiating arms 21 and 22 are arranged opposite each other, as are the third and fourth radiating arms 23 and 24. One end of the first radiating arm 21 is connected to the third radiating arm 23, and the other end is opposite to the fourth radiating arm 24. Similarly, one end of the second radiating arm 22 is connected to the third radiating arm 23, and the other end is connected to the fourth radiating arm 24. This allows the radiator to transmit radiation through the first radiating arm 21, the second radiating arm 22, the third radiating arm 23, the fourth radiating arm 24, the fifth radiating arm 25, and a hollow region 26. Arm 22, the third radiating arm 23, and the fourth radiating arm 24 can form a hollow region 26. The fifth radiating arm 25 can be connected to the first radiating arm 21 and extend towards the second radiating arm 22 within the hollow region 26 to form a radiating branch. The third radiating arm 23 can include a first branch 231 and a second branch 232 connected to the first branch 231. The first branch 231 is located between the first radiating arm 21 and the second radiating arm 22. The second branch 232 extends from the end of the first branch 231 in a direction away from the second radiating arm 22 and can protrude from the second radiating arm 22. The feed point 3 can be located on the fourth radiating arm 24 near the end of the second radiating arm 22, and the grounding point 4 can be located on the second radiating arm 22 near the end of the third radiating arm 23.

[0040] In this embodiment, by combining the asymmetric structure of the radiator 2 with the internal branches of the fifth radiating arm 25 formed in the hollow region 26 through a "one-feed-one-ground" method, multiple different current paths can be constructed for the radiator 2 to excite the radiator 2 to generate resonant modes located in different operating frequency bands, thereby widening the coverage of the antenna structure 100. Compared with the related technology that increases the number of grounding points to change the current direction in order to increase the resonant modes, the number of springs connecting the antenna structure 100 and the motherboard in the electronic device can be reduced, saving motherboard space and internal space of the electronic device.

[0041] like Figure 2As shown, the hollow area 26 can be arranged in a regular rectangular shape, or as... Figure 3 As shown, the radiator 2 can also adapt to changes in spatial layout, for example... Figure 3 As shown, in order to match the internal spatial layout of the electronic device in which the antenna structure 100 is configured, the hollow region 26 of the radiator 2 can be arranged in an irregular shape, for example... Figure 3 Two clearance holes are formed in the middle to avoid screws or other parts inside the electronic device.

[0042] Of course, in addition to radiator 2 Figure 2 and Figure 3 Besides the appearance shown, other adaptive changes can be made, and this disclosure does not impose any limitations on this. Mainly, such as Figure 4 As shown, for Figure 3 The key dimensions of the radiator 2 shown in the diagram that affect the resonant modes are marked. Specifically, the length of the first radiating arm 21 is equal to 0.1λ, the length of the fourth radiating arm 24 is equal to 0.145λ, the length of the second stub 232 is equal to 0.1λ, and the extension length of the fifth radiating arm 25 is 0.065λ, where λ is the free-space wavelength corresponding to the center frequency of N78. Under the constraint of these key dimensions, multiple resonant modes of the antenna structure 100 can be avoided.

[0043] For example, such as Figure 5 As shown, the Figure 5 An S11 curve diagram of antenna structure 100 is shown, in which multiple marker points are marked, and... Figure 5 The diagram also shows the horizontal and vertical coordinates of each marker point. Specifically, through appropriate matching, the multiple resonant modes of the antenna structure 100 can cover the B32 band (1.452GHz-1.496GHz), N41 band (2.515-2.675GHz), N77 band (3.3GHz-4.2GHz), N78 band (3.3GHz-3.8GHz), N79 band (4.4GHz-5GHz), WIFI 2.4 band, WIFI 5G band, and WIFI 6E band, including 4G band, 5G band, and multiple WIFI bands. The integrated scheme of multiple bands fused into the same radiator 2 is beneficial to the utilization rate of the radiation area of ​​the radiator 2.

[0044] Specifically, the resonant modes of the antenna structure 100 may include a first resonant mode covering the N78 frequency band, such as... Figure 6As shown, the first resonant mode may include a half-wavelength mode formed by the first radiating arm 21 and the first stub 231 and a half-wavelength mode formed by the second radiating arm 22 and the first stub 231. That is, when the antenna structure 100 radiates antenna signals in the N78 frequency band, the current distribution on the surface of the radiator 2 is located at the first radiating arm 21, the second radiating arm 22 and the first stub 231, and there is a strong current point between the first radiating arm 21 and the first stub 231, and there is also a strong current point between the second radiating arm 22 and the first stub 231.

[0045] The resonant modes of the antenna structure 100 may include a second resonant mode covering the N79 frequency band, such as Figure 7 As shown, the second resonant mode includes a half-wavelength mode formed by the first radiating arm 21, the fifth radiating arm 25, and the fourth radiating arm 24. That is, when the antenna structure 100 radiates antenna signals in the N79 frequency band, the current distribution on the surface of the radiator 2 is located in the first radiating arm 21, the fifth radiating arm 25, and the fourth radiating arm 24, and a strong current can exist on the first radiating arm 21, and the current gradually weakens towards the fifth radiating arm 25 and the fourth radiating arm 24.

[0046] The resonant modes of the antenna structure 100 may include a third resonant mode covering the B32 frequency band, such as... Figure 8 As shown, the third resonant mode includes a quarter-wavelength mode formed from the grounding point of the first stub 231 to the second radiating arm 22, and a quarter-wavelength mode formed by the first radiating arm 21, the fourth radiating arm 24, and the second radiating arm 22. That is, when the antenna structure 100 radiates antenna signals in the B32 frequency band, the current on the radiator 2 is distributed in the first stub 231, the second radiating arm 22, the fourth radiating arm 24, and the first radiating arm 21, and the current decreases in the direction from the first stub 231 to the grounding point 4, and the current gradually decreases in the direction from the first radiating arm 21 to the grounding point.

[0047] The resonant modes of the antenna structure 100 may include a fourth resonant mode covering the WIFI 2.4 and N41 frequency bands. The WIFI 2.4 and N41 frequency bands are essentially at the same frequency, so... Figure 9As shown, the fourth resonant mode includes a half-wavelength mode formed by the fourth radiating arm 24, the second radiating arm 22, and the second stub 232, and a half-wavelength mode formed by the first radiating arm 21 and the third radiating arm 23. When the antenna structure 100 radiates at least one of the signals in the Wi-Fi 2.4 band and the N41 band, the current on the surface of the radiator 2 is distributed in the first radiating arm 21, the second radiating arm 22, the third radiating arm 23, and the fourth radiating arm 24, and a strong current point is formed at the feed point 3 between the fourth radiating arm 24 and the third stub 232, and the current gradually weakens towards the fourth radiating arm 24, the second radiating arm 22, and the second stub 232; a strong current point is formed on the first stub 231 of the third radiating arm 23, and the current gradually weakens towards the first radiating arm 21 and the second stub 232.

[0048] The resonant modes of the antenna structure 100 may include a fifth resonant mode covering the WIFI 5G band and the WIFI 6E band, such as... Figure 10 As shown, the fifth resonant mode includes a half-wavelength mode of the fourth radiating arm 24, a half-wavelength mode formed by the first radiating arm 21 and the fifth radiating arm 25, and a half-wavelength mode formed by the first radiating arm 21 and the first stub 231. When the antenna structure 100 radiates signals covering at least one of the WIFI 5G and WIFI 6E bands, the current on the surface of the radiator 2 has multiple current zeros, forming a higher-frequency higher-order mode to radiate signals of the WIFI 5G and WIFI 6E bands. At this time, the current on the radiator 2 is distributed in the first radiating arm 21, the first stub 231, the fourth radiating arm 24, and the fifth radiating arm 25, and there are multiple current zeros and multiple current strong points.

[0049] Based on the antenna structure 100 disclosed in the above embodiments, this disclosure also provides an electronic device, which may include the antenna structure 100 described in any of the above embodiments. The antenna support 1 of the antenna structure 100 can be fixed inside the electronic device, and the feed point 3 on the radiator 2 can be electrically connected to the motherboard of the electronic device. It can be directly electrically connected to the motherboard through a metal spring, or it can be electrically connected to the motherboard through a metal spring and other circuit boards. In order to improve the radiation efficiency of the antenna structure 100, a certain net space gap is required between the motherboard or circuit board and the radiator 2 in the thickness direction of the electronic device.

[0050] 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.

[0051] 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 by The antenna structure comprises: an antenna support; a radiator shaped on a surface of the antenna support, the radiator comprising a first radiating arm, a second radiating arm, a third radiating arm, a fourth radiating arm, a fifth radiating arm and a hollow region, the first radiating arm and the second radiating arm are oppositely arranged, the third radiating arm and the fourth radiating arm are oppositely arranged, the first radiating arm and the second radiating arm are connected to the third radiating arm and the fourth radiating arm respectively to enclose the hollow region, the third radiating arm comprises a first stub between the first radiating arm and the second radiating arm and a second stub protruding from the second radiating arm, the fifth radiating arm is connected to the first radiating arm and extends into the hollow region; a feed point arranged at one end of the fourth radiating arm close to the second radiating arm; a ground point arranged at one end of the second radiating arm close to the third radiating arm; wherein the radiator is used to construct multiple different current paths to excite resonant modes at different operating frequency bands.

2. The antenna structure of claim 1, wherein, The antenna structure covers B32, N41, N77, N78, N79, WIFI 2.4, WIFI 5G and WIFI 6E frequency bands.

3. The antenna structure of claim 1, wherein, The resonant modes comprise a first resonant mode covering the N78 frequency band, the first resonant mode comprising a one-half wavelength mode formed by the first radiating arm and the first stub and a one-half wavelength mode formed by the second radiating arm and the first stub.

4. The antenna structure of claim 1, wherein, The resonant modes comprise a second resonant mode covering the N79 frequency band, the second resonant mode comprising a one-half wavelength mode formed by the first radiating arm, the fifth radiating arm and the fourth radiating arm.

5. The antenna structure of claim 1, wherein, The resonant modes comprise a third resonant mode covering the B32 frequency band, the third resonant mode comprising a one-quarter wavelength mode formed by the first stub to the ground point of the second radiating arm, a one-quarter mode formed by the first radiating arm, the fourth radiating arm and the second radiating arm.

6. The antenna structure of claim 1, wherein, The resonant modes comprise a fourth resonant mode covering the WIFI 2.4 and N41 frequency bands, the fourth resonant mode comprising a one-half wavelength mode formed by the fourth radiating arm, the second radiating arm and the second stub and a one-half wavelength mode formed by the first radiating arm and the third radiating arm.

7. The antenna structure of claim 1, wherein, The resonant modes comprise a fifth resonant mode covering the WIFI 5G and WIFI 6E frequency bands, the fifth resonant mode comprising a one-half wavelength mode of the fourth radiating arm, a one-half wavelength mode formed by the first radiating arm and the fifth radiating arm and a one-half wavelength mode formed by the first radiating arm and the first stub.

8. The antenna structure of claim 1, wherein, The resonance modes include a sixth resonance mode covering the N77 frequency band, the sixth resonance mode including a one-half wavelength mode formed by the first radiation arm, the fifth radiation arm and the fourth radiation arm in common, a one-half wavelength mode formed by the first radiation arm and the first stub in common, and a one-half wavelength mode formed by the second radiation arm and the first stub in common.

9. The antenna structure of claim 1, wherein, The length of the first radiation arm is equal to 0.1λ, the length of the fourth radiation arm is equal to 0.145λ, the length of the second stub is equal to 0.1λ, and the fifth radiation arm has an extension length of 0.065λ. wherein, λ is a free space wavelength corresponding to a center frequency point of N78.

10. An electronic device, comprising: An antenna structure as claimed in any one of claims 1-9. An antenna structure as claimed in any one of claims 1-9.

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