Antenna coupling structure of TWS Bluetooth earphone and TWS Bluetooth earphone

Abstract

The utility model discloses an antenna coupling structure of a TWS bluetooth earphone and the TWS bluetooth earphone, the antenna coupling structure comprises an antenna and an antenna coupling arm, the antenna and the antenna coupling arm are arranged on the same plane, and the distance between the antenna and the antenna coupling arm is 0.4 mm-0. 8mm. The antenna coupling structure is provided with an antenna coupling arm coupled with the antenna, the antenna coupling arm and the antenna coupling arm are arranged on the same plane, and the distance between the antenna and the antenna coupling arm is 0.4-0.8 mm, so that the efficiency of the antenna is more than 30%, the impedance is close to 50 ohms, and the standing-wave ratio of the antenna is less than 3. The corresponding antenna coupling structure is applied to the TWS Bluetooth earphone, the transmission function effect of the corresponding TWS Bluetooth earphone is better, the performance requirement of high users can be met, the antenna area does not need to be increased correspondingly, and the area of the TWS Bluetooth earphone cannot be increased.

Description

Technical Field

[0001] The utility model relates to the field of antennas, and in particular to an antenna coupling structure of a TWS Bluetooth headset and a TWS Bluetooth headset. Background Art

[0002] TWS Bluetooth earphones are hands-free earphones that use Bluetooth technology. Connecting to smart devices via Bluetooth, TWS earphones break free from the constraints of traditional wired earphones and provide a more flexible user experience. They feature stereo sound, portability, independent charging, active noise reduction, and environmental awareness. As demand for portable audio devices increases, so too will the demand for TWS Bluetooth earphones as a wireless audio solution.

[0003] With the development of science and technology, the continuous progress and innovation of TWS Bluetooth headset technology has significantly improved the sound quality, stability, noise reduction effect and other aspects of the product. With the development of artificial intelligence and Internet of Things technology, future TWS Bluetooth headsets will be more intelligent and personalized, and touch-sensitive TWS Bluetooth headsets will gradually become mainstream. In order to realize the Bluetooth connection function of TWS Bluetooth headsets, TWS headsets need to be equipped with more effective TWS Bluetooth antennas.

[0004] However, due to the small size of TWS Bluetooth headsets, the limited antenna area and space will result in poor transmission efficiency and a poor user experience. For user groups with higher requirements (such as e-sports enthusiasts, passenger drivers, etc.), it is often difficult to achieve a high user experience within the limited antenna area when designing the antenna. For these reasons, a solution that can effectively improve the performance of Bluetooth antennas is needed. Utility Model Content

[0005] The main purpose of this utility model is to propose an antenna coupling structure for a TWS Bluetooth headset, aiming to improve the transmission efficiency of the antenna of the existing TWS Bluetooth headset.

[0006] To achieve the above-mentioned purpose, the first aspect of the present invention proposes an antenna coupling structure for a TWS Bluetooth headset, including an antenna and an antenna coupling arm. The antenna and the antenna coupling arm are arranged in the same plane, and the distance between the antenna and the antenna coupling arm is 0.4mm-0.8mm.

[0007] Optionally, the antenna coupling arm is U-shaped, and includes a first coupling main arm and a first coupling branch and a second coupling branch respectively connected to two sides of the first coupling main arm.

[0008] Optionally, the antenna is L-shaped, comprising a vertical arm inserted between the first coupling branch and the second coupling branch, and a horizontal arm arranged on a side of the first coupling branch or the second coupling branch away from the first coupling main arm.

[0009] Optionally, the distance between the vertical arm and the first coupling main arm is 0.6-0.8 mm.

[0010] Optionally, the frequency range of the antenna includes 2400 MHz to 2500 MHz.

[0011] As a second aspect of the present invention, the present invention also provides a TWS Bluetooth headset, including an antenna coupling structure as described in any of the above solutions.

[0012] As a preferred solution for TWS Bluetooth headset, the TWS Bluetooth headset also includes a shell and a PCB board, the antenna coupling structure and the PCB board are arranged on the shell, the antenna is connected to the PCB board via the feeding point and the feeding point, and the antenna coupling arm is electrically connected to the PCB board through the coupling ground.

[0013] As a preferred solution for the TWS Bluetooth headset, the TWS Bluetooth headset also includes a touch screen, which is mounted on the housing, and the contacts of the touch screen are connected to the PCB board.

[0014] As a preferred solution for TWS Bluetooth headsets, the antenna coupling structure is arranged on the side of the PCB board close to the touch screen.

[0015] Beneficial effects:

[0016] In the technical solution of this utility model, the antenna coupling structure is provided with an antenna coupling arm coupled to the antenna, which is arranged in the same plane, and the spacing between the antenna and the antenna coupling arm is between 0.4-0.8mm, so that the antenna efficiency is greater than 30%, the impedance is close to 50 ohms, and the antenna standing wave ratio is less than 3. When the corresponding antenna coupling structure is applied to TWS Bluetooth headsets, the corresponding TWS Bluetooth headsets have better transmission function and can meet the personalized needs of higher-end users. It does not need to increase the antenna area, which will not lead to an increase in the size of the TWS Bluetooth headset. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1This is the antenna standing wave ratio diagram of the TWS earphone antenna of the utility model when the antenna coupling arm is not added;

[0019] Figure 2 This is the antenna standing wave ratio diagram of the antenna coupling structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the TWS earphone antenna structure of the utility model;

[0021] Figure 4 This is a front view of the TWS earphone antenna structure of this utility model.

[0022] Description of Figure Numbers:

[0023] 10-antenna; 11-vertical arm; 12-horizontal arm; 20-antenna coupling arm; 21-first coupling main arm; 22-first coupling branch; 23-second coupling branch; 30-housing; 31-PCB board; 32-feeding point; 33-feeding point; 34-coupling ground; 35-contact. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] As a first aspect of this solution, the utility model proposes an antenna coupling structure for a TWS Bluetooth headset.

[0028] In the embodiment of the present utility model, Figures 3 and 4 As shown, the antenna coupling structure of the TWS Bluetooth headset includes an antenna 10 and an antenna coupling arm 20. The antenna 10 and the antenna coupling arm 20 are arranged in the same plane, and the distance between the antenna 10 and the antenna coupling arm 20 is 0.4mm-0.8mm.

[0029] The antenna coupling arm 20 is a device for enhancing the performance of the antenna 10 , and changes the radiation characteristics and receiving sensitivity of the antenna 10 through electromagnetic coupling with the antenna 10 .

[0030] Specifically, due to the limited space inside the headset, the antenna 10 structure alone cannot achieve high transmission efficiency and cannot satisfy the user experience. In this embodiment, mutual coupling is generated between the added antenna coupling arm 20 and the antenna 10, and the coupling between the two achieves the effect of improving the performance of the antenna 10. The antenna 10 and the antenna coupling arm 20 are arranged in the same plane, wherein the antenna 10 is a planar structure, and the antenna 10 and the antenna coupling arm 20 are in the same plane, which means that the two are coplanar, and there is no height difference between the two. Specifically, it can be parallel to the plane where the PCB board 31 of the headset is located. Among them, the antenna 10 and the antenna coupling arm 20 are arranged in the same plane, which helps to save space, and the layout on the same plane is also convenient for manufacturing and assembly. The setting on the same plane can reduce electromagnetic interference, improve the signal reception and transmission efficiency of the antenna 10, and thus enhance the wireless communication stability of the headset.

[0031] Furthermore, the spacing between the antenna 10 and the antenna coupling arm 20 is 0.4mm-0.8mm. The spacing referred to is the vertical distance between the antenna 10 and the adjacent arm of the antenna coupling arm 20, and the corresponding spacing range is between 0.4-0.8mm. Setting the spacing within this range can achieve efficient coupling of the antenna 10, further improving the quality and stability of wireless communication. Within this spacing range, the electromagnetic interaction between the antenna 10 and the antenna coupling arm 20 reaches an optimal state, making signal transmission smoother and reducing signal attenuation and distortion.

[0032] The antenna 10 and the antenna coupling arm 20 can be made of copper foil, aluminum foil or other metal materials with good conductivity. These materials should have high conductivity and low resistance to ensure that the antenna 10 can effectively radiate and receive electromagnetic wave signals.

[0033] The antenna coupling arm 20 can also be made of a metal material similar to that of the antenna 10 to ensure a good coupling effect.

[0034] In the technical solution of the present utility model, the antenna coupling arm 20 is U-shaped, and includes a first coupling main arm 21 and a first coupling branch 21 and a second coupling branch 22 respectively connected to both sides of the first coupling main arm 21.

[0035] The U-shaped antenna coupling arm 20 increases the coupling area with the antenna 10, thereby improving the coupling efficiency of the antenna 10. At the same time, the U-shaped structure can better guide and concentrate electromagnetic energy, enhancing the signal reception and transmission capabilities of the antenna 10.

[0036] The antenna 10 is L-shaped and includes a vertical arm 11 inserted between the first coupling branch 21 and the second coupling branch 22 , and a horizontal arm 12 arranged on a side of the first coupling branch 21 or the second coupling branch 22 away from the first coupling main arm 21 .

[0037] The design of the L-shaped antenna 10, in conjunction with the U-shaped antenna coupling arm 20, further enhances the antenna 10's coupling effect. The vertical arm 11, inserted between the first coupling branch 21 and the second coupling branch 22, ensures a more uniform distance between the antenna 10 and the antenna coupling arm 20, further stabilizing the electromagnetic coupling. The horizontal arm 12 increases the effective length of the antenna 10, improving its radiation efficiency and receiving sensitivity.

[0038] The antenna coupling arm 20 is set to a U shape, the antenna 10 is set to an L shape, and the vertical arm 11 of the antenna 10 is set inside the U shape of the antenna coupling arm 20, so that the antenna 10 can achieve better performance in a limited space, meeting the TWS Bluetooth headset's requirements for miniaturization and high performance of the antenna 10.

[0039] Furthermore, the spacing between the vertical arm 11 and the first coupling main arm 21 is 0.6-0.8 mm, specifically, the vertical distance between the vertical arm 11 and the first coupling main arm 21. The spacing between the vertical arm 11 and the first coupling branch 21 and / or the second coupling branch 22 is 0.4-0.6 mm. The spacing between the horizontal arm 12 and the first coupling branch 21 or the second coupling branch 22 is 0.4-0.6 mm. This spacing range ensures good coupling between the antenna 10 and the antenna coupling arm 20 while avoiding electromagnetic interference and signal attenuation caused by excessively small spacing. The signal reception and transmission efficiency of the antenna 10 is optimized, thereby improving the wireless communication quality and stability of the headset.

[0040] The frequency range of the antenna 10 includes 2400MHz to 2500MHz. This specific frequency range covers the wireless communication frequency band commonly used by TWS Bluetooth headsets, which can ensure that the headset has good signal reception and transmission capabilities within this frequency band. Within this frequency range, the performance parameters of the antenna 10 have been optimized and designed to have high gain, low standing wave ratio and good directivity, which can meet the requirements of TWS Bluetooth headsets for wireless communication quality. At the same time, this frequency range also takes into account compatibility with other wireless devices, so that TWS Bluetooth headsets can work stably in complex wireless communication environments.

[0041] As shown in Table 1, Table 2 and Figure 1 、 Figure 2 As shown, Figure 1 Table 1 shows the antenna standing wave ratio of the TWS earphone antenna when the antenna coupling arm 20 is not added. Table 2 shows the antenna efficiency of the TWS earphone antenna when the antenna coupling arm 20 is not added. Figure 2 Table 2 shows the antenna standing wave ratio (SWR) of the antenna coupling structure in the present invention. The antenna efficiency of the antenna coupling structure in the present invention is shown in Table 2. The antenna coupling structure significantly improves wireless communication performance. Within the 2400MHz to 2500MHz bandwidth of antenna 10, the antenna efficiency reaches over 30%, compared to the original efficiency of less than 25%, significantly improving signal quality. Furthermore, the present invention has a far impedance of nearly 50 ohms and an SWR of less than 3, demonstrating that the antenna coupling structure in this embodiment achieves efficient signal transmission and reception.

[0042] Among them, the antenna standing wave ratio refers to the ratio of the standing wave antinode voltage to the node voltage amplitude, the antenna impedance is the ratio of the voltage to the current at the antenna input port, and the antenna efficiency refers to the ratio of the power radiated by the antenna to the total power input to the antenna.

[0043] Table 1. Antenna efficiency of TWS earphone antenna without adding antenna coupling arm

[0044] Frequency EfficienCy Efficiency.dB 2400 21％ -6.87 2410 22％ -6.64 2420 23％ -6.41 2430 22％ -6.56 2440 22％ -6.49 2450 25％ -5.94 2460 25％ -5.98 2470 25％ -6.11 2480 24％ -6.12 2490 25％ -6.02 2500 23％ -6.40

[0045] Table 2 Antenna efficiency of the antenna coupling structure in the present invention

[0046] Frequency Efficiency Efficiency.dB 2400 33％ -4.88 2410 33％ -4.79 2420 35％ -4.53 2430 33％ -4.86 2440 36％ -4.39 2450 38％ -4.21 2460 37％ -4.37 2470 36％ -4.46 2480 35％ -4.54 2490 35％ -4.52 2500 34％ -4.64

[0047] As a second aspect of the present invention, the present invention also provides a TWS Bluetooth headset, including an antenna coupling structure as described in any of the above solutions.

[0048] The meticulous design of the antenna coupling structure of this utility model ensures stable signal transmission and reception, greatly improving the quality and stability of communication and meeting the high demands of users.

[0049] Combine Figure 3 and Figure 4 The TWS Bluetooth headset includes a shell 30 and a PCB board 31, wherein the shell 30 in the figure omits part of the outer shell structure to show the internal structure, and the design of some existing structures is omitted in the figure. The antenna coupling structure and the PCB board 31 are arranged in the shell 30, specifically in a cavity inside the shell 30. The antenna 10 is connected to the PCB board 31 through the feeding point 32 and the feeding point 33, and the antenna coupling arm 20 is electrically connected to the PCB board 31 through the coupling ground 34. The antenna 10 is connected to the PCB board through the feeding point 32 and the feeding point 33. The antenna coupling arm 20 is electrically connected to the PCB board through the coupling ground 34.

[0050] The PCB board 31 is the mounting carrier for the antenna 10 and the antenna coupling arm 20. The antenna coupling structure is parallel to the plane where the PCB board 31 is located. The antenna 10 is connected to the PCB board through the feeding point 32 and the feeding point 33. This connection method ensures efficient transmission of signals between the antenna 10 and the PCB board, reducing signal loss and interference. The antenna coupling arm 20 is electrically connected to the PCB board through the coupling ground 34, further enhancing the electrical stability of the entire system. This allows the headset to operate more reliably during operation, reducing the occurrence of audio interruptions or quality degradation due to unstable signals. The specific connection method can be welding, gluing or other fixing methods to ensure that the connection between the antenna 10 and the antenna coupling arm 20 and the PCB is firm and reliable.

[0051] The TWS Bluetooth headset of this utility model is also equipped with a touch screen. The touch screen is mounted on the housing 30, and its contacts 35 are connected to the PCB board, providing users with intuitive and convenient operation. Users can easily control various functions of the headset through the touch screen, such as play, pause, change songs, and adjust the volume. The touch screen has a fast response speed and high operation accuracy, greatly improving the user experience.

[0052] In particular, the antenna coupling structure is arranged on the side of the PCB board close to the touch screen. This layout design makes full use of the limited space inside the headset, making the overall structure more compact. At the same time, this layout can reduce electromagnetic interference, improve the performance of antenna 10, and ensure stable signal transmission. In addition, the setting close to the touch screen side also facilitates the coordinated work with the touch screen, making the interaction between the operating signal and the wireless signal smoother, further improving the overall performance and user experience of the headset. The corresponding antenna coupling structure is applied to the TWS Bluetooth headset, and the corresponding TWS Bluetooth headset has a better transmission function and can meet the personalized needs of higher users. There is no need to increase the area of ​​antenna 10, which will not increase the area of ​​the TWS Bluetooth headset.

[0053] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An antenna coupling structure for a TWS Bluetooth headset, characterized in that: The invention comprises an antenna and an antenna coupling arm. The antenna and the antenna coupling arm are arranged on the same plane, and the distance between the antenna and the antenna coupling arm is 0.4mm-0.8mm.

2. The antenna coupling structure of the TWS Bluetooth headset according to claim 1, characterized in that: The antenna coupling arm is U-shaped and includes a first coupling main arm and a first coupling branch and a second coupling branch respectively connected to two sides of the first coupling main arm.

3. The antenna coupling structure of the TWS Bluetooth headset according to claim 2, characterized in that: The antenna is L-shaped and includes a vertical arm inserted between the first coupling branch and the second coupling branch, and a horizontal arm arranged on a side of the first coupling branch or the second coupling branch away from the first coupling main arm.

4. The antenna coupling structure of the TWS Bluetooth headset according to claim 3, characterized in that: The distance between the vertical arm and the first coupling main arm is 0.6-0.8 mm.

5. The antenna coupling structure of the TWS Bluetooth headset according to claim 1, characterized in that: The frequency range of the antenna includes 2400MHz to 2500MHz.

6. A TWS Bluetooth headset, characterized in that: The invention comprises the antenna coupling structure as described in any one of claims 1 to 5.

7. The TWS Bluetooth headset according to claim 6, characterized in that: The TWS Bluetooth headset also includes a shell and a PCB board. The antenna coupling structure and the PCB board are arranged on the shell. The antenna is connected to the PCB board via a feeding point and a feeding point. The antenna coupling arm is electrically connected to the PCB board through a coupling ground.

8. The TWS Bluetooth headset according to claim 7, characterized in that: The TWS Bluetooth headset also includes a touch screen, which is mounted on the housing, and the contacts of the touch screen are connected to the PCB board.

9. The TWS Bluetooth headset according to claim 8, characterized in that The antenna coupling structure is arranged on a side of the PCB board close to the touch screen.

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