Antenna, antenna assembly, and headset

Abstract

Embodiments of the present application provide an antenna, an antenna assembly, and a headset. The antenna comprises: an antenna body; a feed portion; and at least two grounding portions. The feed portion is arranged on the antenna body, and the at least two grounding portions are arranged spaced apart on the antenna body and are both arranged spaced apart from the feed portion. In this way, the present application can solve the problem of existing antennas being prone to interference.

Description

Antennas, antenna assemblies, and earphones

Technical field

[0001] The present application relates to the field of antennas, and in particular to antennas, antenna assemblies and earphones. [Background Technology]

[0002] Antennas are a crucial component of electronic devices with communication capabilities. For example, Bluetooth functionality requires an antenna to transmit Bluetooth signals and data. Currently, most electronic devices, such as mobile phones, computers, headphones, tablets, and smart wearables, are equipped with antennas. Antennas often require a large clearance area to minimize interference from other circuit components.

[0003] At present, compact design is a popular design trend for electronic devices, which results in a smaller clearance area for the antenna and greater interference from surrounding interference circuits on the antenna, resulting in low antenna radiation efficiency.

[0004] [Summary of the invention]

[0005] The main technical problem solved by this application is to provide an antenna, an antenna assembly and an earphone, which can improve the problem that the existing antenna is easily interfered with by peripheral circuits, resulting in low antenna radiation efficiency.

[0006] To solve the above technical problems, an embodiment of the present application provides an antenna, which includes: an antenna body, a feeding part and two grounding parts; the feeding part is connected to the antenna body; the two grounding parts are connected to the antenna body at intervals and are both arranged at intervals from the feeding part.

[0007] Compared with the prior art, the beneficial effects of the present application are: the antenna includes at least two grounding parts connected to the antenna body at intervals, and the at least two grounding parts enable the antenna to be grounded at multiple points. The multiple electric field zero point positions can reduce the electrical coupling generated by other adjacent circuit elements, thereby reducing interference to the antenna, and can effectively reduce or shield the interference of other circuit elements, further improving the performance of the antenna.

[0008] In some embodiments, a working path is formed between two adjacent ground portions on the antenna body. The working path includes a first working path. The length of the first working path matches the first working wavelength of the antenna.

[0009] In some embodiments, the antenna body is arranged in a linear shape, and the length of the working path is set to the length of the path between the two ground portions along the antenna body.

[0010] In some embodiments, the antenna body is arranged in a planar shape, and the grounding portions are arranged at intervals on the outer peripheral edge of the antenna body; the length of the working path is set to the path length between the corresponding two grounding portions along the outer peripheral edge of the antenna body.

[0011] In some embodiments, the feeding portion and the two grounding portions extend from the antenna body and are arranged in a sheet shape; a notch is provided at the outer peripheral edge of the antenna body, and the feeding portion is connected to the notch edge of the notch; one of the two grounding portions is connected to the adjacent edge of the outer peripheral edge connected to the notch edge, and the main surface of the feeding portion and the main surface of the grounding portion connected to the adjacent edge are outward toward the same side of the antenna body or parallel to each other.

[0012] In some embodiments, the antenna body is configured as an integral structure, and the length of the first working path is configured to be an odd multiple of half the first working wavelength of the antenna.

[0013] In some embodiments, the antenna body is arranged in a planar shape, and there are two grounding parts, which are connected to the outer peripheral edge of the antenna body; the working path includes a second working path, and the outer peripheral edge of the antenna body is located on one side edge between the two grounding parts for forming a first working path, and the other side edge located between the two grounding parts is used to form a second working path.

[0014] In some embodiments, an absolute value of a difference between the length of the first working path and the length of the second working path is within a range of 0 mm to 5 mm.

[0015] In some embodiments, the length of the second operating path is configured to match a second operating wavelength of the antenna body that is different from the first operating wavelength.

[0016] In some embodiments, the first operating wavelength includes a wavelength corresponding to 2.4 GHz, and the second operating wavelength includes a wavelength corresponding to 5 GHz.

[0017] In some embodiments, the antenna body has an electric field strength point position, and the antenna body includes a first main body portion and a second main body portion divided by the electric field strength point position; the feeding portion and at least one grounding portion are connected to the first main body portion, and at least another grounding portion is connected to the second main body portion.

[0018] In some embodiments, the first main body and the second main body are spaced apart; the first main body has a first broken edge, the second main body has a second broken edge, the first broken edge and the second broken edge are opposite to each other and spaced apart to form a broken seam, and the segmented seam spaced apart the first main body and the second main body, the first main body and the grounding portion and the feeding portion connected thereto form a main antenna, and the second main body and the grounding portion connected thereto form a parasitic antenna.

[0019] In some embodiments, the first main body is provided with a corresponding first sub-working path between the ground portion to which it is connected and the edge of the first slit, and the length of the first sub-working path is set to an odd multiple of one-quarter of the first working wavelength of the antenna; and / or the second main body is provided with a corresponding second sub-working path between the ground portion to which it is connected and the edge of the second slit, and the length of the second sub-working path is set to an odd multiple of one-quarter of the first working wavelength of the antenna.

[0020] In some embodiments, the width of the slit is 0.1 mm to 5 mm.

[0021] In some embodiments, the first body portion and the second body portion are integrally formed.

[0022] On the other hand, an embodiment of the present application provides an antenna assembly, which includes: a circuit board and an antenna, wherein a feeding portion and at least two grounding portions are connected to the circuit board, and an antenna body is spaced apart from the circuit board.

[0023] In some embodiments, the antenna assembly further includes at least two connecting wires, which are connected to wire connection points on the circuit board; each grounding portion corresponds to a wire connection point, and each grounding portion is closer to its corresponding wire connection point than other grounding portions.

[0024] In some embodiments, the antenna assembly includes a transmission interface for coupling to an external device; the transmission interface is electrically connected to the circuit board and spaced apart, and is grounded through the circuit board to form a parasitic antenna.

[0025] In some embodiments, the minimum distance between the transmission interface and the antenna body is 0.5 mm to 5 mm.

[0026] In some embodiments, at least one of an inductor, a capacitor, and a resistor is further provided between the transmission interface and the circuit board.

[0027] On the other hand, the present application also includes an earphone, which includes an earphone body and an antenna assembly arranged on the earphone body.

Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] FIG1 is a front view of an exemplary structure of an antenna assembly embodiment of the present application;

[0030] FIG2 is a schematic top view of an exemplary structure of an antenna assembly embodiment of the present application;

[0031] FIG3 is a schematic diagram of an exemplary structure of the first working path and the second working path in FIG2 ;

[0032] FIG4 is a schematic top view of another exemplary structure of an antenna assembly embodiment of the present application;

[0033] FIG5 is a schematic diagram of an exemplary structure of the first sub-working path and the second sub-working path in FIG4 ;

[0034] FIG6 is a schematic top view of another exemplary structure of an antenna assembly embodiment of the present application;

[0035] FIG7 is a schematic structural diagram of an embodiment of a headset of the present application;

[0036] FIG8 is a schematic diagram comparing the radiation efficiency of the antenna assembly embodiment of the present application and a conventional IFA antenna. [Specific implementation method]

[0037] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0038] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0039] In the description of the embodiments of this application, unless otherwise specified or limited, technical terms such as "installed," "connected," "connect," "fixed," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integrated connections; they can refer to direct connections or indirect connections. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0040] The inventors of this application have discovered through research that electronic devices, such as mobile phones, computers, headphones, tablets, smart wearable devices, etc., often require a compact design, which results in a relatively limited internal space. In this case, the antenna's clearance area is often small, resulting in greater interference to the antenna from the surrounding circuit elements, low radiation efficiency, and poor performance.

[0041] In order to solve the above problems, the present application provides the following embodiments. The following antenna embodiments of the present application describe exemplary structures of antennas.

[0042] 1 , the antenna 100 may include an antenna body 110, a feed portion 120, and at least two ground portions 130. The feed portion 120 is connected to the antenna body 110. At least two ground portions 130 are connected to the antenna body 110 at intervals and are spaced apart from the feed portion 120. The ground portion 130 may be used to connect to a ground point of a circuit board 200. Specifically, the antenna body 110 may be connected to the ground of the circuit board 200 via the ground portion 130. The feed portion 120 may be used to connect to a feeding point of the circuit board 200. Signals on the circuit board 200 may be transmitted to the antenna body 110 via the feeding point and the feed portion 120 on the circuit board 200.

[0043] Generally speaking, mobile terminals (such as mobile phones, headphones, etc.) are compact in structure and small in size, which often results in a small clearance area for the antenna. This also limits the design size of the antenna corresponding to the operating frequency band. In addition, due to the compact structure, there are often many electronic devices gathered near the antenna. These electronic devices close to the antenna will interfere with the radiation of the antenna, resulting in poor radiation efficiency and performance. The radiation efficiency of antenna 100 refers to the ratio of the radiated power of antenna 100 to the input power. The operating frequency band of antenna 100 refers to the frequency band in which antenna 100 meets the preset conditions when operating.

[0044] On the one hand, at least two grounding portions 130 enable the antenna 100 to be grounded at at least two points, forming at least two electric field zero points, which can effectively reduce the electrical coupling of other nearby electronic devices / circuits to the antenna 100, and thereby effectively reduce or shield the interference of other nearby electronic devices to the antenna 100, further improving the radiation efficiency of the antenna 100.

[0045] On the other hand, because at least two grounding portions 130 are spaced apart on the antenna body 110 and connected to different locations on the antenna body 110, the antenna 100 has multiple current-strength points. Furthermore, the grounding portions 130 at different connection locations, combined with the antenna body 110, can enable the antenna 100 to exhibit multiple antenna modes under certain circumstances. The multiple antenna modes can be the same or different. When the multiple antenna modes are the same, the operating frequencies of the multiple antenna modes are the same, thereby improving the radiation efficiency of the antenna 100 at that operating frequency. When the multiple antenna modes are different, the operating frequencies of the multiple antenna modes are different, which can expand the antenna's operating bandwidth. For example, by expanding a certain frequency band or stimulating radiation in multiple different frequency bands, the antenna 100 can meet the requirements of more radiation scenarios.

[0046] The antenna 100 described above may include at least two ground portions 130, that is, the number of ground portions 130 may be three, four, or more. Optionally, the feed portion 120 may be closer to at least one of the at least two ground portions 130. This facilitates the generation of different antenna modes and minimizes the size of the antenna while still meeting the required operating frequency band.

[0047] In some embodiments, the antenna body 110 may be provided with a working path between each two adjacent ground portions 130. The working path is the physical path of the antenna body 100 (e.g., certain structural dimensions, such as length), specifically a straight or non-straight path between the grounding points on the antenna body 100 connected to the two ground portions 130. This physical path is designed to meet the radiation requirements of the antenna 100 at the operating frequency. In other words, when designing the antenna 100, it is necessary to consider the radiation requirements of the operating frequency when designing the physical path.

[0048] In some embodiments, the antenna body 110 is configured in a linear shape. The length of the working path can be set to the length of the path between two adjacent ground portions 130 along the antenna body 110. The linear configuration of the antenna body 110 generally resembles the structure of an IFA antenna, for example, a slender strip or rod-shaped structure, or alternatively, a slender sheet.

[0049] In some embodiments, referring to FIG2 and FIG3 , the antenna body 110 is arranged in a planar shape. The planar arrangement of the antenna body 110 means that the antenna body 110 is roughly like the main structure of a PIFA antenna, for example, it can be a plate-like structure. For a planar antenna body 110, the main surface of the antenna body 110 (for example, the side surface with the largest area) can be roughly flat, or a non-planar surface with protrusions or depressions. At least two grounding portions 130 are connected to the outer peripheral edge of the antenna body 110 at intervals. When the antenna body is arranged in a planar shape, the number of working paths can be multiple.

[0050] Referring to Figure 3 , in some embodiments, the working path may be a path L10 between two adjacent ground portions 130 along the outer periphery of the antenna body 110. In other embodiments, the working path may be a path L11 between two adjacent ground portions 130 along the spacing between the two ground portions 130, or a path L12 from one ground portion 130 to the other ground portion 130 after passing through a transition point. The transition point may be any point or points on the antenna body. The length of the working path may be set to the length of the path between two adjacent ground portions 130 along the outer periphery of the antenna body 110.

[0051] In a specific embodiment, the working path is a path L10 between two adjacent ground portions 130 along the outer peripheral edge of the antenna body 110. In this case, the overall size of the antenna body 110 can be reduced.

[0052] Through the above-mentioned arrangement, the form of at least two grounding portions 130, whether for a linear antenna 110 or a planar antenna 110, can present multiple antenna modes under certain circumstances, thereby expanding the corresponding working frequency band range or stimulating the radiation of multiple different working frequency bands. In other examples, each of two adjacent grounding portions 130 can have a working path, so at least two grounding portions 130 can enable the antenna 100 to have multiple working paths. In this case, the length of one of the working paths meets the radiation requirements of the antenna in a certain working frequency band. If there are other working paths, it can further play a role in broadening the working frequency band of the antenna or stimulating other different working frequency bands to achieve multi-band radiation.

[0053] The working path may include a first working path, the length of which matches the first operating wavelength of the antenna 100. That is, under the first working path whose length matches the first operating wavelength, the antenna body 110 can radiate electromagnetic wave signals at the first operating wavelength through the first working path. In other words, the antenna 100 has a first operating frequency or a first operating frequency range, and the first operating frequency or the first operating frequency range corresponds to the first operating wavelength. The length of the first working path is set to match the first operating wavelength of the antenna 100, thereby enabling the antenna 100 to radiate electromagnetic waves at the first operating wavelength, thereby meeting the corresponding radiation requirements. For example, the first operating wavelength is a wavelength corresponding to 2.4 GHz or 5 GHz.

[0054] Through the above configuration, at least two grounding portions 130 can be provided with a first operating path for both linear and planar antennas 110, thereby satisfying the radiation requirements for the operating frequency band corresponding to the first operating wavelength. Furthermore, in certain circumstances, the antenna 100 can also be provided with additional operating paths. The first operating path resonates with the other working paths to generate multiple antenna modes, extending the frequency band corresponding to the first operating wavelength, or otherwise satisfying the radiation requirements for multiple different operating frequency bands.

[0055] For example, the working path may further include a second working path. In some embodiments, the second working path may extend the working frequency band corresponding to the first working wavelength or enhance the radiation efficiency of the working frequency of the first working wavelength. For example, the absolute value of the difference between the length of the first working path and the length of the second working path is within a range of 0 mm to 5 mm. This arrangement makes the length of the second working path as close as possible to the length of the first working path, which can effectively extend the range of the working frequency band corresponding to the first working wavelength or further enhance the radiation of the working frequency band corresponding to the first working wavelength, thereby effectively improving the radiation efficiency.

[0056] Optionally, the absolute value of the difference is within a range of 0 mm to 3 mm, which can further make the first working path as close as possible to the first working path, further expanding the range of the working frequency band corresponding to the first working wavelength. Optionally, the absolute value of the difference can be 0 mm to 2 mm, or 0 mm to 1 mm.

[0057] In other embodiments, the second working path can meet the radiation requirements of the frequency band corresponding to the second working wavelength that is different from the first working wavelength. That is, the antenna 100 can radiate two different wavelengths, and the first working path and the second working path can achieve the radiation requirements of the frequency bands corresponding to the different working wavelengths. Specifically, the length of the second working path is set to match the second working wavelength of the antenna body 110 that is different from the first working wavelength. In this way, the length of the second working path can meet the radiation requirements of the working frequency band corresponding to the second working wavelength, thereby enabling the antenna 100 to achieve different radiation requirements of the first working wavelength and the second working wavelength, meet the radiation requirements of multiple wireless frequency band connections, and thus achieve multi-mode connection of the antenna 100.

[0058] Regardless of whether the antenna body 110 is linear, planar, or in other shapes, the antenna body 110 may be configured as an integral structure or a split structure.

[0059] 2 and 4 , for example, the antenna body 110 may have an electric field strength point location, and the antenna body 100 may include a first main body portion 111 and a second main body portion 112 divided by the electric field strength point location. The feed portion 120 and at least one ground portion 130 are connected to the first main body portion 111, and at least another ground portion 130 is connected to the second main body portion. Taking two ground portions 130 as an example, the electric field strength point location is located between the two ground portions 130, the feed portion 120 and one of the ground portions 130 are connected to the first main body portion 111, and the other ground portion 130 is connected to the second main body portion 112. For an integrated structural arrangement, the first main body portion 111 and the second main body portion 112 may be an integrated structural arrangement, for example, integrally molded. For a split structural arrangement, the first main body portion 111 and the second main body portion 112 may be spaced apart from each other.

[0060] Among them, for an antenna with an integrated structure, the position of the electric field strength point can be roughly referred to the position shown by the dotted line in Figure 2, and the direction of the current may include the direction from the electric field strength point along the outer edge of the planar antenna to the ground part as shown by the arrow in the figure, and may also include the direction from any point of the electric field strength point directly to the ground part.

[0061] The following describes the integrated structure and split structure settings respectively.

[0062] (1) The antenna body 110 may be provided as an integral structure (see FIG. 2 and FIG. 3 ).

[0063] As described above, at least two grounding portions 130 can reduce electrical coupling with other adjacent circuit components / circuits, thereby reducing interference with the antenna 100 caused by other circuit components. In the operating mode of the antenna 100, at least two grounding portions 130 are spaced apart and connected to the antenna body 110, so that the antenna 100 can excite a slot antenna or a slot antenna-like mode. For example, the antenna 100 is coupled to the circuit board 200, the feed portion 120 is electrically connected to the circuit board 200, and an excitation signal is input to the feed portion from the circuit board 200. The grounding portion 130 is also electrically connected to the circuit board 200 and grounded via the circuit board 200. A gap exists between the antenna body 110 and the circuit board 200, thereby enabling the antenna 100 to further excite a slot antenna-like mode.

[0064] The size of the slot antenna is affected by the position or distance of the at least two ground portions 130. Therefore, the operating frequency band of the slot antenna can be controlled by controlling the relative position or relative distance of the at least two ground portions 130. Optionally, the length of the first working path between two adjacent ground portions 130 matches the operating wavelength of the antenna body 110. By setting the relative position between the two adjacent ground portions 130, the corresponding first working path can be adjusted to meet the operating frequency band or frequency range corresponding to the first operating wavelength. For example, the length of the first working path is set to half the first operating wavelength of the antenna 100.

[0065] In some embodiments, for a linear antenna 100, the length of the first working path is set to the length of the path between two adjacent ground portions 130 along the antenna body 110. In other words, the path length is the length of the antenna body 110 extending between the connection points of the two corresponding ground portions 130 and the antenna body 110. For example, if the antenna 100 includes two ground portions 130, the length of the first working path is set to the length of the path between the two corresponding ground portions 130 along the antenna body.

[0066] Specifically, the length of the first working path is set to half the first operating wavelength of the antenna 100. By setting the length of the first working path to half the first operating wavelength, a half-wavelength slot antenna pattern is provided, which can meet the radiation requirements of wireless communication methods such as Bluetooth. During the design phase, the operating frequency band of the slot antenna can be controlled by adjusting the distance between at least two adjacent ground portions 130, effectively increasing the design flexibility of the antenna 100.

[0067] As described above, the number of grounding portions 130 may be at least two. Taking the example of three grounding portions 130, the three grounding portions 130 are spaced apart along the antenna body 110. The working path between two adjacent grounding portions 130 may be a first working path, and the length of the first working path may be half of the first working wavelength of the antenna 100; the working path between the other two adjacent grounding portions 130 may be a second working path, and the length of the second working path may be equal to or not equal to half of the first working wavelength of the antenna 100. If the length of the second working path between the other two adjacent grounding portions 130 is equal to half of the working wavelength of the antenna 100, the antenna efficiency at the first working wavelength can be further enhanced; if the length of the second working path between the other two adjacent grounding portions 130 is not equal to half of the first working wavelength of the antenna 100, the working frequency band can be widened.

[0068] From the perspective of a slot antenna, three or more grounding portions 130 can excite at least two slot antenna modes based on the same linear antenna body 110. If the at least two slot antenna modes can excite radiation in the same operating frequency band, and if the operating frequency bands excited by the at least two slot antenna modes are not identical or completely different, the operating frequency band of the antenna 100 can be effectively expanded or radiation in different operating frequency bands can be achieved. Furthermore, at least two grounding portions 130 can provide multi-point grounding (current zero point) for the antenna 100, weakening the electrical coupling between the surrounding circuits and the antenna 100, thereby reducing interference from other adjacent circuit components on the antenna, effectively reducing or shielding interference and improving antenna performance.

[0069] In other embodiments, for a planar antenna body 110, at least two grounding portions 130 may be connected to the outer peripheral edge of the antenna body 110. Specifically, the outer peripheral edge of the antenna body 110 between each two adjacent grounding portions 130 and the circuit board 200 (i.e., similar to the ground) may constitute or resemble a slot antenna. In this way, the antenna 100 may be formed with at least two slot antenna modes. Not only that, since the antenna body 100 is arranged in a planar shape, it can also simultaneously excite a planar antenna mode, thereby making the antenna 100 appear as a composite antenna, which can effectively expand the operating frequency band of the antenna 100 and improve the radiation efficiency of the antenna 100.

[0070] For a slot antenna, multiple working paths may exist between the at least two ground portions 130. Specifically, a working path may exist between each pair of adjacent ground portions 130. Optionally, the length of the working path is set to the length of the path between the two corresponding ground portions 130 along the outer edge of the antenna body 110. In other words, the path length of the first working path is the length of the portion of the outer edge of the antenna body 110 between the connection points with the two corresponding ground portions 130.

[0071] Specifically, a slot antenna mode can be excited between the portion of the outer edge of the antenna body 110 between two adjacent ground portions 130 and the circuit board 200 (i.e., similar to the ground), and the frequency band of the slot antenna mode matches the operating wavelength of the antenna 100. A planar antenna body 110 can excite multiple slot antenna modes, and different slot antennas can meet the radiation requirements of the same or different operating wavelengths depending on the path length. This can expand the range of the operating frequency band, meet the radiation requirements of multiple different operating frequency bands, or improve radiation efficiency.

[0072] 3 , taking the antenna 100 including two grounding portions 130 as an example, the length of the working path is set to the path length of the corresponding two grounding portions 130 along the outer peripheral edge of the antenna body 110 .

[0073] Along the outer edge of the planar antenna body 110, two operating paths can be formed between the two ground portions 130, thereby exciting two slot antenna modes. One side of the outer edge of the antenna body 110 located between the two ground portions 130 forms a first operating path L10, while the other side of the outer edge located between the two ground portions 130 forms a second operating path L15.

[0074] That is, the two grounding portions 130 are connected to the outer edge of the antenna body 110. One side edge of the outer edge of the antenna body 110 between the two grounding portions 130 is used to form a first working path, and the other side edge between the two grounding portions 130 is used to form a second working path.

[0075] For example, when the antenna 100 includes three or more ground portions 130, the length of the working path is set to the length of the path between two adjacent ground portions 130 along the outer edge of the antenna body 110. The antenna 100 can excite at least three antenna modes through at least three ground portions 130.

[0076] The portion of the outer edge of the antenna body 110 located between two adjacent grounding portions 130 is used to form a first working path, and the portion of the edge located between another two adjacent grounding portions 130 is used to form a second working path. Of course, the portion of the edge located between yet another two adjacent grounding portions 130 can also form a working path. If there are three grounding portions 130, in this case, along the outer edge of the antenna 100, each two adjacent grounding portions 130 can form a slot antenna with the circuit board 200. Therefore, at least three slot antennas can be formed between the three grounding portions 130, and the length of the working path (first working path) of one slot antenna only needs to match the operating wavelength of the antenna 100.

[0077] Therefore, the length of the first working path matches the first working wavelength of the antenna 100 to meet the radiation requirements of the working frequency band corresponding to the first working wavelength. The path length of the second working path can match the first working wavelength of the antenna 100, thereby further enhancing the radiation efficiency of the first working wavelength, or it can not match the first working wavelength of the antenna 100, thereby expanding the working frequency band corresponding to the first working wavelength or stimulating radiation in different working frequency bands.

[0078] Of course, the ground portion 130 may not be connected to the outer edge of the antenna body 110 , but may be connected to the main surface of the antenna body 110 .

[0079] In some embodiments, the second working path can expand the operating frequency band corresponding to the first operating wavelength or enhance the radiation efficiency of the operating frequency of the first operating wavelength. For example, the absolute value of the difference between the length of the first working path and the length of the second working path is within a range of 0 mm to 5 mm. This configuration ensures that the length of the second working path is as close as possible to the length of the first working path, effectively expanding the range of the operating frequency band corresponding to the first operating wavelength or further enhancing the radiation of the operating frequency band corresponding to the first operating wavelength, thereby effectively improving radiation efficiency.

[0080] Optionally, the absolute value of the difference is within a range of 0 mm to 3 mm, which can further make the first working path as close as possible to the first working path, further expanding the range of the working frequency band corresponding to the first working wavelength. Optionally, the absolute value of the difference can be 0 mm to 2 mm, or 0 mm to 1 mm.

[0081] Simply put, during the design process, the relative positions of the two ground portions 130 can be appropriately adjusted (or new ground portions 130 can be added) to adjust the resonant frequencies of the two slot antennas to near the corresponding operating frequency band of the first operating wavelength (such as 2.4 GHz), thereby effectively expanding the range of the operating frequency band of the antenna 100 relative to conventional single-mode antennas.

[0082] In other embodiments, the second working path can meet the radiation requirements of the frequency band corresponding to the second working wavelength that is different from the first working wavelength. That is, the antenna 100 can radiate two different wavelengths, and the first working path and the second working path can achieve the radiation requirements of the frequency bands corresponding to the different working wavelengths. Specifically, the length of the second working path is set to match the second working wavelength of the antenna body 110 that is different from the first working wavelength. In this way, the length of the second working path can meet the radiation requirements of the working frequency band corresponding to the second working wavelength, thereby enabling the antenna 100 to achieve different radiation requirements of the first working wavelength and the second working wavelength, meet the radiation requirements of multiple wireless frequency band connections, and thus achieve multi-mode connection of the antenna 100.

[0083] For example, the first operating wavelength includes a wavelength corresponding to 2.4 GHz, which can meet the radiation requirements of technologies such as Bluetooth, and the second operating wavelength includes a wavelength corresponding to 5 GHz, which can meet the radiation requirements of technologies such as Wi-Fi. In this configuration, the antenna 100 can meet both 2.4 GHz and 5 GHz radiation requirements, achieving dual-mode or even multi-mode radiation.

[0084] From the perspective of a slot antenna, at least two grounding portions 130 can excite at least two slot antenna modes based on the same planar antenna body 110. If the at least two slot antenna modes can excite radiation in the same operating frequency band, the radiation efficiency of the antenna 100 at that operating frequency can be improved. If the operating frequency bands excited by the at least two slot antenna modes are not identical or completely different, the operating frequency band of the antenna 100 can be effectively expanded or radiation in different operating frequency bands can be achieved. Furthermore, the at least two grounding portions 130 can ground the antenna 100 at multiple points (current zero points), weakening the electrical coupling between the surrounding circuits and the antenna 100, thereby reducing interference from other adjacent circuit elements on the antenna, effectively reducing or shielding interference and improving antenna performance.

[0085] In addition, as shown in FIG2 , the first main body 111 and the second main body 112 are integrally formed or connected to form an integral structure (e.g., welded). The first main body 111 and the second main body 112 can be two parts of the antenna body 110, and the two are only electrically divided by the location of the electric field strength point, without actual physical separation.

[0086] (2) The antenna body 110 may be provided in a split structure (see FIG. 4 and FIG. 5 ).

[0087] The first main body 111 and the second main body 112 may be spaced apart from each other. In this case, the antenna body 110 is divided into two independent parts. The first main body 111 and the second main body 112 are spaced apart from each other, and the two parts can be coupled via displacement current.

[0088] Taking the example of an antenna 100 including two grounding portions 130, the electric field strength point of the antenna body 110 is located between the two grounding portions 130. The feed portion 120 and one of the grounding portions 130 are connected to the first main portion 111, so that the first main portion 111, the feed portion 120, and the corresponding grounding portion 130 form a main antenna. The other grounding portion 130 is connected to the second main portion 112, so that the second main portion 112 and the corresponding grounding portion 130 form a parasitic antenna.

[0089] For the antenna body 110 arranged in a linear shape, the main antenna can be regarded as an IFA antenna. As mentioned above, the antenna body 110 arranged in a linear shape can refer to the structure of the main body of the IFA antenna.

[0090] For the antenna body 110 arranged in a planar shape, the main antenna 100 can be regarded as a PIFA antenna. As mentioned above, the antenna body 110 arranged in a planar shape can refer to the structure of the body of a PIFA antenna.

[0091] The IFA antenna or PIFA antenna generally has a ground portion 130 and a feed portion 120 , and its operating frequency band is generally affected by factors such as the positional relationship between the ground portion 130 and the feed portion 120 , and the positional relationship between the ground portion 130 and the electric field strength point.

[0092] In other words, the antenna 100 of the embodiment shown in FIG4 includes a first antenna and a second antenna spaced apart from each other. The first antenna is a main antenna, comprising a first main portion 111, a feed portion 120 connected to the first main portion 111, and a ground portion 130. The second antenna is a parasitic antenna, comprising a second main portion 112, connected to the ground portion 130 of the second main portion 112. The first main portion 111 has a first slit edge 113. The second main portion 112 has a second slit edge 114. The first slit edge 113 and the second slit edge 114 are opposed to each other and spaced apart to form a slit 115. The edge region where the first slit edge 113 and the second slit edge 114 are located can be the location of the electric field strength point of the antenna 100. The slit 115 separates the first main portion 111 from the second main portion 112. The first main body 111 and its connected grounding part and feeding part form a main antenna, and the second main body 112 and its connected grounding part form a parasitic antenna. The main body 112 can be considered as a parasitic element parasiticized by the first main body 111 through current coupling.

[0093] 5 , for the first main body 111, the grounding portion 130 and the feeding portion 120 can be connected at intervals at the edge of the first main body 111, or can be connected inside the first main body 111. For example, the grounding portion 130 and the feeding portion 120 can be arranged opposite to the first slit edge 113. A corresponding first sub-working path is provided between the grounding portion 130 and the first slit edge 113. The first sub-working path can be a path L20 between the grounding portion 130 and the first slit edge 113 along the outer peripheral edge of the first main body 111, or a path between the grounding portion 130 and any point on the first slit edge 113 (e.g., L21 and L22).

[0094] Optionally, the length of the first sub-working path is set to an odd multiple of one-quarter of the first operating wavelength of the antenna 100 (e.g., 1, 3, etc.), such as one-quarter, three-quarters, five-quarters, etc. The length of the first sub-working path may refer to the length of the path along the outer edge of the first main body 111, between the ground portion 130 and the first slit edge 113. Of course, the length of the first sub-working path may also be the distance between the connection point between the corresponding ground portion 130 and the first main body 111 and any point on the first slit edge 113.

[0095] In other words, when using an IFA or PIFA antenna as the main antenna, the structure and dimensions of the main antenna can be adjusted according to the operating frequency band requirements corresponding to the first operating wavelength of antenna 100. For example, setting the length of the first sub-operating path to an odd multiple of one-quarter of the first operating wavelength can meet the radiation requirements of technologies such as 2.4 GHz Bluetooth.

[0096] In addition, the width of the slit 115 can be 0.1mm to 5mm. Setting such a gap distance can effectively cause the main antenna to parasitize the parasitic antenna, enhance the coupling current of the main antenna to the parasitic antenna, thereby improving the radiation efficiency of the parasitic antenna and further expanding the operating frequency band of the antenna 100. Optionally, the gap distance can be 0.2mm to 0.3mm, or 0.5mm to 3mm, or 1mm to 2mm. This can prevent contact between the two and ensure the formation of the parasitic antenna. On the other hand, it can also increase the coupling current of the main antenna to the parasitic antenna, thereby improving the radiation efficiency of the parasitic antenna.

[0097] 5 , the second main body portion 112 has a corresponding second sub-working path between the corresponding ground portion 130 and the second slit edge 114. The second sub-working path can be a path L30 along the outer edge of the second main body portion 112, between the ground portion 130 and the second slit edge 114, or a path (e.g., L31 or L32) of the ground portion 130 at any point on the second slit edge 114.

[0098] The length of the second sub-working path is set to an odd multiple (e.g., 1, 3, etc.) of one-quarter of the first operating wavelength of the antenna body 110, such as one-quarter, three-quarters, or five-quarters. The length of the second sub-working path can refer to the length of the path along the outer edge of the second main body 112, from the ground portion 130 to the second slit edge 114. Of course, the length of the second working path can also refer to the distance between the connection point between the ground portion 130 and the second main body 112 and any point on the second slit edge 114.

[0099] By setting the length of the second sub-working path to an odd multiple (e.g., 1, 3, etc.) of one-quarter of the first operating wavelength of antenna 100, the parasitic antenna can also radiate electromagnetic waves of the first operating wavelength, thereby enhancing the radiation of the first operating wavelength together with the main antenna, thereby improving the radiation efficiency of antenna 100. Of course, the length of the second sub-working path can also be slightly greater than or less than an odd multiple (e.g., 1, 3, etc.) of one-quarter of the first operating wavelength, so that it can resonate near the operating frequency band corresponding to the first operating wavelength, thereby enhancing the frequency band range of the first operating wavelength.

[0100] As described above, the antenna body 110 can be configured as an integral structure or a split structure. For a planar antenna body 110, a notch is provided on the outer edge of the antenna body 110 (see Figures 2, 3, 4, and 5). The feed portion 120 and the ground portion 130 extend from the antenna body 110 and are provided in a sheet-like manner. The feed portion 120 is connected to the edge of the notch formed by the outer edge of the antenna body 110; one of the ground portions 130 is connected to the adjacent edge of the outer edge of the antenna body 110 that is connected to the aforementioned notch edge.

[0101] Optionally, a main surface of the feeding portion 120 and a main surface of the ground portion 130 connected to the adjacent edge face outward toward the same side of the antenna body or are parallel to each other.

[0102] The main surface of the feed portion 120 refers to the surface with the largest area of ​​the feed portion 120, and the main surface of the ground portion 130 refers to the surface with the largest area of ​​the ground portion 130. Furthermore, the main surfaces of the feed portion 120 and the ground portion 130 may further refer to the surfaces of the feed portion 120 and the ground portion 130 facing the outside of the antenna body 110.

[0103] By arranging the main surface of the feed portion 120 and the main surface of the corresponding ground portion 130 to face outward from the same side of the antenna body or to be parallel to each other, they can be formed by bending in the same direction, for example, by stamping in the same direction, thereby improving manufacturing efficiency. Furthermore, due to the presence of the notch, the portion of the feed portion 120 can be stamped out of the area originally existing in the notch, thereby saving material for the entire antenna 100.

[0104] Based on the above antenna embodiment, the present application further provides an antenna assembly embodiment. The following antenna assembly embodiment describes an exemplary structure of the antenna assembly 10.

[0105] The antenna assembly 10 may include: a circuit board 200 and the antenna 100. The feeder 120 and at least two grounding portions 130 of the antenna 100 are connected to the circuit board 200. The main body of the antenna 100 is spaced apart from the circuit board 200.

[0106] Typically, when the antenna 100 is assembled on the circuit board 200 for use, the antenna 100 is easily interfered with by the electrical coupling between the various electronic components on the circuit board 200 and the antenna 100. In some embodiments, the circuit board 200 is provided with at least two connecting wires 201. The connecting wires 201 are connected to the wire connection points on the circuit board 200. Each grounding portion corresponds to a wire connection point, and among the at least two connecting wires 201, each grounding portion 130 is closer to its corresponding wire connection point than the other grounding portions. Thus, by providing at least two grounding portions 130, at least two electric field zero points are formed. Due to the presence of at least two electric field zero points, the interference of the electrical coupling generated around the antenna 100 can be further reduced, thereby improving the performance of the antenna 100.

[0107] As described above, the parasitic antenna is an antenna 100 that is grounded and includes at least one parasitic element (i.e., an element without a feeding portion 120 or a feeding point). As shown in Figure 6, in some embodiments, the antenna assembly 10 may further include a transmission interface 202 for coupling to an external device. The transmission interface 202 is electrically connected to the circuit board 200 and is arranged at intervals, and is grounded through the circuit board 200, so that the transmission interface 202 can also serve as a parasitic antenna. Therefore, the transmission interface 202, as a parasitic antenna, can further improve the antenna efficiency of the antenna assembly 10 and widen the operating frequency band. Specifically, the transmission interface 202 can be a USB interface or a charging probe interface, and the USB interface can be a TYPE-C interface, a TYPE-A interface, a Type-B interface, or a microUSB interface.

[0108] In some implementations, the minimum distance between the transmission interface 202 and the antenna body 110 is 0.5 mm to 5 mm.

[0109] In some embodiments, at least one of an inductor, a capacitor, and a resistor is further provided between the transmission interface 202 and the circuit board 200. In this case, the operating frequency band of the parasitic antenna can be controlled by adjusting the parameters of the inductor, the capacitor, and the resistor.

[0110] Optionally, the antenna assembly 10 may further include a bracket (not shown), which may be disposed between the circuit board 200 and the antenna body 110 to support the antenna body 110 and thereby ensure the structural stability and reliability of the antenna body 110. In some embodiments, the bracket may include a plurality of insulating support posts, which may be supported between the circuit board 200 and the antenna body 110. In other embodiments, the bracket may include a support plate and a plurality of support posts, wherein the support plate supports the antenna body 110, and the plurality of support posts are supported between the support plate and the circuit board 200.

[0111] Based on the description of the above antenna assembly embodiment and antenna embodiment, the present application further provides an earphone embodiment. The earphone embodiment of the present application below describes an exemplary structure of an earphone 1.

[0112] Referring to Figure 7, the earphone 1 may include an earphone body 20 and an antenna assembly 10 disposed on the earphone body 20. The earphone body 20 may further include a housing assembly 21, a speaker 22, and / or a battery 23. The speaker 22, antenna assembly 10, and battery 23 may be disposed within the housing assembly 21. The housing assembly 21 may refer to an earphone shell. The battery 23 may supply power to the speaker 22 and antenna assembly 10. The antenna assembly 10 may also communicate with an external device (e.g., an earphone box, a mobile phone, or a computer).

[0113] For example, the first working wavelength of the earphone 1 is 2.4 GHZ. For the above-mentioned antenna body 110 in an integrated structure, the length of the first working path can be set to an integer multiple of half the first working wavelength (for example, 1 times, 2 times...). For the antenna body 110 in a split structure, the length of the first sub-working path of the IFA antenna or the PIFA antenna can be positioned at or about an odd multiple of a quarter of the first working wavelength (can be 1 times, 3 times...); the second sub-working path of the parasitic antenna can be configured as needed, for example, it can be configured to be an odd multiple of a quarter of the first working wavelength (can be 1 times, 3 times...). In this case, the operating frequency band of the antenna 100 can be around 2.4 GHZ, and the antenna 100 can excite a variety of antenna modes, which can further improve the working efficiency of the antenna 100. Of course, the second sub-working path can be configured to be a quarter of the second working wavelength, or an odd multiple of a quarter of the second working wavelength.

[0114] Referring to Figure 8 , when tested using a conventional IFA antenna, its antenna efficiency is relatively low. Assuming the antenna efficiency exceeds 10%, the antenna assembly 10 is capable of stable communication. Conventional IFA antennas can communicate stably in the 2.38GHz-2.48GHz frequency band, but due to their lack of bandwidth margin, they have a low yield rate in industrial production. The antenna 100 of this application can reduce interference from electrical coupling between surrounding circuits and the antenna 100, resulting in more stable communication. Furthermore, the antenna has a larger bandwidth margin in the operating frequency band, is more resistant to material and production tolerances, and has a higher yield rate in industrial production.

[0115] In summary, by providing at least two grounding portions 130 on the antenna body 110, and by virtue of at least two grounding portions 130 being located on the same antenna body 110, the at least two grounding portions 130 can form multiple grounding points, thereby reducing interference with the antenna from other adjacent circuit components, effectively reducing or shielding interference and improving antenna performance. Furthermore, different grounding portions 130 can form different antennas based on the same antenna body 110, allowing the antenna 100 to function as a composite antenna. In this composite antenna mode, compared to a conventional single antenna mode, the antenna's operating frequency band can be effectively expanded, or multiple different operating frequency bands can be achieved, thereby improving antenna efficiency, broadening the frequency band's function, or enabling multiple different operating frequency bands.

[0116] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An antenna, characterized in that, Comprising: An antenna body; A feeding part connected to the antenna body; At least two grounding parts spacedly connected to the antenna body and both spaced from the feeding part.

2. The antenna according to claim 1, wherein The antenna body forms a working path between two adjacent grounding parts, and the working path includes a first working path, and the length of the first working path matches the first working wavelength of the antenna.

3. The antenna according to claim 2, wherein The antenna body is linearly arranged, and the length of the working path is set as the path length along the antenna body between two corresponding grounding parts.

4. The antenna according to claim 2, wherein The antenna body is planar, and the at least two grounding parts are spacedly arranged on the outer periphery of the antenna body; the length of the working path is set as the path length along the outer periphery of the antenna body between two corresponding grounding parts.

5. The antenna according to claim 4, wherein The feeding part and the grounding part extend from the antenna body and are sheet-shaped; a notch is provided on the outer periphery of the antenna body, and the feeding part is connected to the notch edge of the notch; one of the at least two grounding parts is connected to the adjacent edge adjacent to the notch edge on the outer periphery, and the main surfaces of the feeding part and the grounding part connected to the adjacent edge face the same side of the antenna body outward or are parallel to each other.

6. The antenna according to any one of claims 2-5, wherein The antenna body is provided as an integral structure, and the length of the first working path is set as an integer multiple of half of the first working wavelength of the antenna.

7. The antenna according to claim 2, wherein The antenna body is planar, the number of the grounding parts is two, and the two grounding parts are connected to the outer periphery of the antenna body; the working path includes a second working path, and one side edge of the outer periphery of the antenna body between the two grounding parts is used to form the first working path, and the other side edge between the two grounding parts is used to form the second working path.

8. The antenna according to claim 7, wherein The absolute value of the difference between the length of the first working path and the length of the second working path is within 0 mm to 5 mm.

9. The antenna according to claim 7, wherein The length of the second working path is set to match a second working wavelength different from the first working wavelength of the antenna body.

10. The antenna according to claim 9, wherein The first working wavelength includes the wavelength corresponding to 2.4 GHz, and the second working wavelength includes the wavelength corresponding to 5 GHz.

11. The antenna according to claim 1, wherein The antenna body has an electric field strong point position. The antenna body includes a first main body part and a second main body part divided by the electric field strong point position. The feeding part and at least one of the grounding parts are connected to the first main body part, and at least another grounding part is connected to the second main body part.

12. The antenna according to claim 11, wherein the first main body part and the second main body part are arranged at intervals. The first main body part has a first slit edge, and the second main body part has a second slit edge. The first slit edge and the second slit edge are opposite to each other and arranged at intervals to form a slit. The slit separates the first main body part from the second main body part. The first main body part and the grounding part and the feeding part connected thereto form a main antenna, and the second main body part and the grounding part connected thereto form a parasitic antenna.

13. The antenna according to claim 12, wherein a corresponding first sub - working path is provided between the grounding part connected to the first main body part and the first slit edge, and the length of the first sub - working path is set to an odd multiple of one - quarter of the first working wavelength of the antenna; and / or, a corresponding second sub - working path is provided between the grounding part connected to the second main body part and the second slit edge, and the length of the second sub - working path is set to an odd multiple of one - quarter of the first working wavelength of the antenna.

14. The antenna according to claim 12, wherein the width of the slit is 0.1 mm to 5 mm.

15. The antenna according to claim 11, wherein the first main body part and the second main body part are integrally formed.

16. An antenna assembly, characterized in that, Comprising: a circuit board; the antenna according to any one of claims 1 - 15, the feeding part and the at least two grounding parts are connected to the circuit board, and the antenna body is arranged at intervals from the circuit board.

17. The antenna assembly according to claim 16, wherein the antenna assembly further includes at least two connecting wires, and the connecting wires are connected to wire connection points on the circuit board. Each grounding part corresponds to a wire connection point, and each grounding part is closer to its corresponding wire connection point than other grounding parts.

18. The antenna assembly according to claim 16, wherein the antenna assembly includes a transmission interface for coupling to an external device. The transmission interface is electrically connected to the circuit board and arranged at intervals, and is grounded through the circuit board to form a parasitic antenna.

19. The antenna assembly according to claim 18, wherein the minimum distance between the transmission interface and the antenna body is 0.5 mm to 5 mm.

20. The antenna assembly according to claim 18, wherein at least one of an inductor, a capacitor, and a resistor is further provided between the transmission interface and the circuit board.

21. A headset, wherein a headset body; the antenna assembly according to any one of claims 16 - 20 is provided on the headset body.

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