Bluetooth earphone

Abstract

The utility model relates to a Bluetooth earphone, which comprises a shell, a high-gain antenna module and a signal processing device, and is characterized in that the high-gain antenna module is arranged in the shell of the Bluetooth earphone, so that data transmission between the Bluetooth earphones is realized. The high-gain antenna module comprises a base body, a radiation layer and a ground layer, the radiation layer is arranged on the first side surface of the base body, and the ground layer is arranged on the second side surface of the base body. When the high-gain antenna is arranged in the shell, specifically, the first side surface of the base body is arranged close to the inner side of the shell provided with the sound outlet hole, and the second side surface of the base body is arranged close to the outer side opposite to the inner side of the shell. According to the scheme, in the wearing and using process of the earphone, energy which is generated when the high-gain antenna module runs and faces a user can be reflected outwards, the external radiation capability of the high-gain antenna module is enhanced, and the communication distance of the Bluetooth earphone is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of earphone technology, and in particular to a Bluetooth earphone. Background Art

[0002] With the continuous development of Bluetooth headset technology, users' demands for Bluetooth headsets have gradually diversified. There are not only basic requirements for connecting Bluetooth headsets to terminals such as mobile phones for broadcasting, but also functional requirements for real-time voice or data transmission between Bluetooth headsets via Bluetooth.

[0003] However, in the related art, the communication distance between Bluetooth headsets is relatively short (within 50 meters), which is difficult to meet the needs of long-distance communication. Utility Model Content

[0004] Based on this, it is necessary to provide a Bluetooth headset to increase the communication distance between Bluetooth headsets.

[0005] An embodiment of the present application provides a Bluetooth headset, comprising: a shell, a high-gain antenna module and a signal processing device, wherein the high-gain antenna module is arranged inside the shell, and the high-gain antenna module comprises a substrate, a ground layer and a radiation layer, the radiation layer is arranged on a first side surface of the substrate close to the inner side of the shell, and the ground layer is arranged on a second side surface of the substrate close to the outer side of the shell, wherein the inner side of the shell is a side of the shell on which a sound outlet is provided, and the outer side of the shell is arranged opposite to the inner side of the shell; the signal processing device is connected to the radiation layer.

[0006] The above-mentioned Bluetooth headset includes a shell, a high-gain antenna module and a signal processing device. By setting the high-gain antenna module inside the shell of the Bluetooth headset, data transmission between Bluetooth headsets is realized. The high-gain antenna module includes a substrate, a radiation layer and a stratum, wherein the radiation layer is arranged on the first side surface of the substrate, and the stratum is arranged on the second side surface of the substrate. When the high-gain antenna is arranged inside the shell, the first side surface of the substrate is arranged close to the inner side of the shell where the sound outlet is arranged, and the second side surface of the substrate is arranged close to the outer side opposite to the inner side of the shell. Through this scheme, during the wearing and use of the headset, the inner side of the shell where the sound outlet is arranged is close to the user, and the relatively arranged outer side is away from the user. In this way, the energy generated by the high-gain antenna module when it is running and directed toward the user can be reflected outward (away from the user), thereby enhancing the external radiation capability of the high-gain antenna module, thereby effectively improving the communication distance of the Bluetooth headset, that is, improving the communication distance between Bluetooth headsets. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. 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 creative work.

[0008] Figure 1 This is a schematic diagram of the structure of a Bluetooth headset in an embodiment of the present application;

[0009] Figure 2 This is a schematic diagram of the structure of a high-gain antenna module in an embodiment of the present application;

[0010] Figure 3 This is a schematic diagram of the second side surface structure of a high-gain antenna module in one embodiment of the present application;

[0011] Figure 4 A schematic cross-sectional structure diagram of a high-gain antenna module in one embodiment of the present application;

[0012] Figure 5 This is a schematic diagram of the structure of a Bluetooth headset in another embodiment of the present application;

[0013] Figure 6 This is a schematic diagram of the structure of a Bluetooth headset in another embodiment of the present application;

[0014] Figure 7 This is a schematic diagram of the S11 return loss waveform of a Bluetooth headset in an implementation of the present application;

[0015] Figure 8 A schematic diagram of a Smith chart of a Bluetooth headset in an embodiment of the present application;

[0016] Fig. 9 This is a schematic diagram of the head model radiation efficiency waveform of the Bluetooth headset in an implementation of the present application;

[0017] Fig.10 This is a schematic diagram of the radiation direction of a high-gain antenna of a Bluetooth headset in an implementation of this application;

[0018] Fig.11 This is a schematic diagram of the conventional antenna radiation direction of the Bluetooth headset in this application. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0020] The Bluetooth headset provided in the embodiment of the present application is essentially a Bluetooth headset that has the function of communicating with other Bluetooth headsets, or has the need to communicate with other Bluetooth headsets. In this way, a Bluetooth connection can be established between Bluetooth headsets, and data can be exchanged between two or more Bluetooth headsets, meeting the functional requirements of real-time voice or data transmission between Bluetooth headsets.

[0021] However, through in-depth research, it is found that the data exchange between Bluetooth headsets is generally achieved through PIFA (Planar Inverted F-shaped Antenna). PIFA antennas can only provide communication within a short distance (50 meters). In the presence of obstructions, the signal strength between Bluetooth headsets will gradually deteriorate, resulting in frequent disconnection or increased data packet loss, which greatly affects the user experience.

[0022] Therefore, the solution of the embodiment of the present application proposes a high-gain antenna design solution in the headset that effectively improves the signal radiation capability. Specifically, it can be an in-ear Bluetooth headset, an open Bluetooth headset, etc., which are not specifically limited here. The solution of the present application, through reasonable layout settings, makes the radiation energy of the Bluetooth headset toward the user when in use be reflected and transmitted in a direction away from the user, thereby effectively improving the communication distance of the Bluetooth headset.

[0023] See also Figure 1 A Bluetooth headset comprises: a shell 10, a high-gain antenna module 20 and a signal processing device (not shown), wherein the high-gain antenna module 20 is arranged inside the shell 10, and the high-gain antenna module 20 comprises a substrate 202, a stratum 201 and a radiation layer 203, the radiation layer 203 is arranged on a first side surface of the substrate 202 close to the inner side 101 of the shell 10, and the stratum 201 is arranged on a second side surface of the substrate 202 close to the outer side 103 of the shell 10, wherein the inner side 101 of the shell 10 is a side of the shell 10 where a sound outlet hole is provided, and the outer side 103 of the shell 10 is arranged opposite to the inner side 101 of the shell 10; the signal processing device is connected to the radiation layer 203.

[0024] Specifically, the high-gain antenna module 20 refers to an antenna module with a specific design to concentrate radiation energy in a specific direction. Compared with a general antenna, the radiation direction is narrower and the radiation in certain directions is more concentrated, thereby concentrating the energy in certain directions, so that there is a higher signal strength and coverage in these directions. In the solution of the embodiment of the present application, when the headset is in a wearing state, the radiation energy of the high-gain antenna module 20 toward the user is concentrated and reflected in a direction away from the user, thereby enhancing the gain in this direction and improving the communication distance of the Bluetooth headset.

[0025] The shell 10 is also the shell of the Bluetooth headset. At the end of the shell of the Bluetooth headset, a sound outlet hole is often opened on one side. When the user wears the Bluetooth headset, the part with the sound outlet hole is inserted into the human ear, and the sound generated by the Bluetooth headset is transmitted to the user through the sound outlet hole, so as to be received by the user. Therefore, in the scheme of this embodiment, the side with the sound outlet hole is used as the inner side 101 of the shell 10, and the radiation layer 203 is set on the first side surface of the substrate 202 close to the inner side 101 of the shell 10, and the ground layer 201 is set on the second side surface of the substrate 202 close to the outer side 103 of the shell 10. Through this setting method, it can be ensured that when the user wears the Bluetooth headset, the radiation layer 203 is closer to the user, and the radiation layer 203 is located between the ground layer 201 and the user. In this way, it can be ensured that when the radiation layer 203 radiates energy, it will be reflected by the ground layer 201, thereby increasing the communication distance of the Bluetooth headset.

[0026] It should be noted that the selection of the material of the substrate 202 is not exclusive, and the selection can be made in combination with actual functional requirements, durability requirements, environmental protection requirements or cost requirements, etc., and there is no specific limitation. For example, in a more detailed embodiment, a FR-4 type substrate can be selected, that is, a substrate formed by a material with a flame retardant grade of FR-4. The FR-4 substrate has stable dielectric properties, high mechanical strength, good processing performance, good heat resistance, strong flame retardancy and high cost-effectiveness. In this way, the use of FR-4 substrate to build the substrate 202 can effectively improve the operating reliability of the high-gain antenna module 20.

[0027] It is understandable that the specific types of the ground layer 201 and the radiation layer 203 are not unique. The two can be set with the same type of material or different types of materials, and the selection can be made in combination with actual needs. In one embodiment, the ground layer 201 and the radiation layer 203 can be set with metal materials. For example, in a more detailed embodiment, the ground layer 201 and the radiation layer 203 are of the same type, the ground layer 201 is a copper ground layer, and the radiation layer 203 is a copper radiation layer, that is, both are set with metal copper.

[0028] It should be noted that the specific shape of the substrate 202 is not unique, and can be flexibly adjusted according to the internal space of the Bluetooth headset to adapt to the different internal structures of the Bluetooth headset. In more detail, in one embodiment, the substrate 202 can be set to a regular shape, such as a polyhedron, a cylinder, a sphere, etc. In another embodiment, the substrate 202 can also be set to a special-shaped structure, such as a combination of a polyhedron and a cylinder, a combination of different polyhedrons, etc., which is not specifically limited. In a more detailed embodiment, the substrate 202 can be set to a cuboid.

[0029] The above-mentioned Bluetooth headset includes a housing 10, a high-gain antenna module 20 and a signal processing device. By setting the high-gain antenna module 20 inside the housing 10 of the Bluetooth headset, data transmission between Bluetooth headsets is realized. The high-gain antenna module 20 includes a substrate 202, a radiation layer 203 and a ground layer 201, wherein the radiation layer 203 is arranged on a first side surface of the substrate 202, and the ground layer 201 is arranged on a second side surface of the substrate 202. When the high-gain antenna is arranged inside the housing 10, the first side surface of the substrate 202 is arranged close to the inner side 101 of the housing 10 where the sound outlet is arranged, and the second side surface of the substrate 202 is arranged close to the outer side 103 opposite to the inner side 101 of the housing 10. Through this solution, when the earphone is worn, the inner side 101 of the shell 10 where the sound outlet is arranged is close to the user, while the relatively outer side 103 is far away from the user. In this way, the energy generated by the high-gain antenna module 20 when it is running and directed toward the user can be reflected outward (away from the user), thereby enhancing the external radiation capability of the high-gain antenna module 20, thereby effectively improving the communication distance of the Bluetooth headset, that is, improving the communication distance between Bluetooth headsets.

[0030] See also Figure 2 In one embodiment, the radiation layer 203 includes a first radiation portion 2031 and a second radiation portion 2032 that are connected to each other, the second radiation portion 2032 is electrically connected to the signal processing device, the width of the first radiation portion 2031 is greater than the width of the second radiation portion 2032, and / or the length of the first radiation portion 2031 is greater than the length of the second radiation portion 2032.

[0031] Specifically, the solution of this embodiment defines a direction in which the antenna runs parallel to the first side surface as the length direction of the radiation layer 203; and defines a direction perpendicular to the length direction and parallel to the first side surface as the width direction of the radiation layer 203. The radiation layer 203 includes a first radiation portion 2031 with a larger width and / or length, and a second radiation portion 2032 with a smaller width and / or length, wherein the first radiation portion 2031 is used for signal reception, and the second radiation portion 2032 is used for impedance transformation. Through the solution of this embodiment, the radiation layer 203 is set to the first radiation portion 2031 and the second radiation portion 2032 with different lengths and widths, ensuring that reliable signal reception is achieved while also having a higher impedance characteristic, which can effectively improve the operational reliability of the radiation layer 203.

[0032] It should be noted that the shapes of the first radiating portion 2031 and the second radiating portion 2032 are not unique. The first radiating portion 2031 and the second radiating portion 2032 can also be set to a regular shape, for example, both are set to a rectangular parallelepiped shape, and the first radiating portion 2031 and the second radiating portion 2032 can also be set to an irregular shape. In another embodiment, one of the first radiating portion 2031 and the second radiating portion 2032 can also be set to a regular shape and the other can be set to an irregular shape, which can be set in combination with actual needs or actual scenarios.

[0033] It can be understood that, in the case where both the first radiating portion 2031 and the second radiating portion 2032 are of regular shapes (e.g., a rectangular parallelepiped), it is only necessary to set the length of the first radiating portion 2031 to be greater than the length of the second radiating portion 2032, and / or, to set the width of the first radiating portion 2031 to be greater than the width of the second radiating portion 2032. In the case where the first radiating portion 2031 and the second radiating portion 2032 are of irregular shapes, it is necessary that the minimum length of the first radiating portion 2031 is greater than the maximum length of the second radiating portion 2032, and / or, the minimum width of the first radiating portion 2031 is greater than the maximum width of the second radiating portion 2032. In this way, while satisfying signal reception, it can have good impedance transformation characteristics.

[0034] In more detail, in one embodiment, the thicknesses of the first radiation portion 2031 and the second radiation portion 2032 (ie, the distance in a direction perpendicular to a plane determined by the length and width directions) may be set to be the same or different, without specific limitation.

[0035] Furthermore, in one embodiment, the width of the first radiating portion 2031 is consistent with the width of the substrate 202 , and is flatly disposed on the first side surface of the substrate 202 .

[0036] Specifically, in the solution of this embodiment, the width of the first radiating portion 2031 is set to be consistent with the width of the substrate 202, so as to increase the signal receiving area of ​​the first radiating portion 2031 as much as possible, which can effectively improve the signal transmission reliability of the radiation layer 203.

[0037] It can be understood that in other embodiments, the width of the first radiating portion 2031 can be set to be smaller than the width of the substrate 202, for example, set to three quarters of the width of the substrate 202, or set to half the width of the substrate 202, etc., without specific limitation, as long as the width of the first radiating portion 2031 is greater than the width of the second radiating portion 2032.

[0038] In a more detailed embodiment, the substrate 202 is a regular rectangular parallelepiped. In this embodiment, the length of the substrate 202 is set to 42 mm (millimeter), and the width of the substrate 202 is set to 10 mm. Correspondingly, the length of the first radiating portion 2031 can be set to be greater than 21 mm to ensure that the length of the first radiating portion 2031 is greater than the length of the second radiating portion 2032; the width of the first radiating portion 2031 can be set to 10 mm, and the first radiating portion 2031 can be flatly arranged on the second surface of the substrate 202.

[0039] In more detail, in one embodiment, the length of the first radiating portion 2031 can be set to 32 mm, the width of the first radiating portion 2031 can be set to 10 mm, the length of the second radiating portion 2032 can be set to 10 mm, and the width can be set to less than 10 mm.

[0040] It is understood that the width of the second radiation portion 2032 is not unique, and in one embodiment, the ratio of the width of the first radiation portion 2031 to the width of the second radiation portion 2032 is 10:1-100:1. That is, the width of the first radiation portion 2031 can be set to be ten to 100 times the width of the second radiation portion 2032, so as to ensure that the radiation layer 203 has good impedance change performance.

[0041] Furthermore, in one embodiment, the second radiation portion 2032 has a width of 0.1 mm-1 mm and is flatly disposed on the first side surface of the substrate 202 .

[0042] Specifically, the width of the second radiation portion 2032 is 0.1 mm-1 mm, that is, the width of the second radiation portion 2032 can be set to 0.1 mm, 1 mm, or any value in the range of 0.1 mm-1 mm, such as 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm or 0.9 mm, etc., according to actual needs, and is not specifically limited. Through this solution, the width of the second radiation portion 2032 is set to 0.1 mm-1 mm, thereby ensuring that the radiation layer 203 has good impedance transformation characteristics.

[0043] For more details, please refer to Figure 3 and Figure 4In one embodiment, the substrate 202 is in a rectangular shape, and the length of the substrate 202 is 42 mm, and the width is 10 mm. In this case, the length of the first radiating portion 2031 can be set to 32 mm, the width of the first radiating portion 2031 can be set to 10 mm, the length of the second radiating portion 2032 can be set to 10 mm, and the width of the second radiating portion 2032 can be set to 0.5 mm. In this way, it can ensure that the radiating layer 203 has a high signal transmission efficiency and a good impedance conversion performance, so that the radiating layer 203 can meet the remaining design space requirements of the Bluetooth headset while also having better performance.

[0044] Define the direction perpendicular to the plane determined by the length direction and the width direction as the thickness direction. It should be pointed out that the thickness of the stratum 201 and the radiation layer 203 are not unique. The two can be set to be the same or different according to actual needs, and there is no specific limitation.

[0045] For example, in one embodiment, the thickness of the layer 201 is 0.01 mm-0.1 mm.

[0046] Specifically, the solution of this embodiment sets the thickness of the stratum 201 to 0.01mm or 0.1mm, or can set the thickness of the stratum 201 to any value between 0.01mm-0.1mm, such as 0.02mm, 0.04mm, 0.05mm, 0.06mm, 0.08mm, etc., which is not specifically limited and can be adaptively set according to the remaining space inside the housing 10 of the Bluetooth headset. Through this solution, the thickness of the stratum 201 is set to 0.01mm-0.1mm, which ensures that the stratum 201 can realize the ground wire function while improving the operational reliability of the stratum 201.

[0047] It should be pointed out that the length and width of the layer 201 are not unique. In one embodiment, in order to reflect the energy toward the human body back as much as possible and increase the communication distance of the Bluetooth headset, the length and width of the layer 201 should be set as large as possible so that the coverage of the layer 201 on the second side surface is large enough.

[0048] In more detail, in one embodiment, the length and width of the layer 201 can be set to be consistent with the length and width of the second side surface of the substrate 202, so that the layer 201 can completely cover the second side surface of the substrate 202, thereby achieving higher energy reflection efficiency and improving the communication distance of the Bluetooth headset.

[0049] Similarly, taking the case where the base 202 is in a rectangular shape, and the length of the base 202 is 42 mm and the width is 10 mm as an example, in the solution of this embodiment, the length of the stratum 201 can be set to 42 mm, and the width of the stratum 201 can be set to 10 mm.

[0050] And / or, in one embodiment, the thickness of the radiation layer 203 is 0.01 mm-0.1 mm.

[0051] Specifically, in the solution of this embodiment, the thickness of the radiation layer 203 is set to 0.01mm or 0.1mm, and the thickness of the radiation layer 203 can also be set to any value between 0.01mm-0.1mm, such as 0.02mm, 0.04mm, 0.05mm, 0.06mm, 0.08mm, etc., which is not specifically limited and can be adaptively set according to the remaining space inside the housing 10 of the Bluetooth headset. Through this solution, the thickness of the radiation layer 203 is set to 0.01mm-0.1mm, which improves the operational reliability of the radiation layer 203 while ensuring that the radiation layer 203 can realize the signal transmission function.

[0052] It should only be pointed out that the distance setting between the ground layer 201 and the radiation layer 203 is not unique, and the remaining space inside the earphone is flexibly set in combination with actual scenarios. For example, in a more detailed embodiment, the thickness of the base 202 is 2mm-5mm.

[0053] Specifically, in the solution of this embodiment, the thickness of the substrate 202 (that is, the distance between the first side surface and the second side surface) is set to 2mm-5mm, the stratum 201 is set on the second side surface of the substrate 202, and the radiation layer 203 is set on the first side surface of the substrate 202, so that the distance between the stratum 201 and the radiation layer 203 reaches 2mm-5mm. Specifically, the thickness can be 2mm, 5mm, or any value between 2mm-5mm, such as 3mm, 4mm, etc.

[0054] In this way, the ground layer 201 and the radiation layer 203 are arranged at a certain distance, so that the operation reliability of the high-gain antenna module 20 can be further improved.

[0055] In one embodiment, the Bluetooth headset further includes a printed circuit board, and the printed circuit board is disposed on a side of the high-gain antenna module 20 close to the ground.

[0056] Specifically, the high-gain antenna module 20 is not arranged in a unique position in the housing 10, and any space in the earphone housing 10 can be used, as long as the high-gain antenna module 20 can be placed in the space. In the solution of this embodiment, the high-gain antenna module 20 is arranged between the printed circuit board and the outer side 103 of the housing 10, so that the high-gain antenna module 20 can be ensured to have a long communication distance, and the interference of the components on the printed circuit board can be isolated through the stratum 201, thereby further improving the communication reliability of the Bluetooth headset.

[0057] See also Figure 5 and 6 Furthermore, in one embodiment, the signal processing device includes a Bluetooth chip 62 and a radio frequency base 61, the substrate 202 is also provided with solder joints, the radiation layer 203 is connected to the radio frequency base 61 through the solder joints (the connection relationship diagram is not shown), and the radio frequency base 61 is connected to the Bluetooth chip 62 (the connection relationship diagram is not shown).

[0058] Specifically, the Bluetooth chip 62 is an integrated chip that integrates a processor and other peripherals and is a core component for realizing the Bluetooth function. The RF base 61 is a component for connecting the RF signal between the high-gain antenna module 20 and the Bluetooth chip 62, including the base and the RF chip, which can effectively transmit the RF signal to ensure the normal operation of the Bluetooth headset.

[0059] It should be noted that the location of the soldering point on the substrate 202 is not unique. In one embodiment, the soldering point may be set at the edge of the first side surface of the substrate 202, and the radiation layer 203 may be extended to the edge of the first side surface and connected to the RF base 61. In another embodiment, the soldering point may be set on other side surfaces, and the radiation layer 203 may be extended to the edge of the first side surface and then further extended to the soldering point through other side surfaces and connected to the RF base 61.

[0060] It is understandable that the connection method between the radiation layer 203 and the RF base 61 is not unique. In a more detailed embodiment, the radiation layer 203 and the RF base 61 are connected via a coaxial cable, which has strong RF signal transmission reliability.

[0061] It should be noted that the type of the substrate 202 is not unique. In one embodiment, the relative dielectric constant of the substrate 202 is 3-5.

[0062] Specifically, the solution of this embodiment adopts a material with a relative dielectric constant of 3-5 as the substrate 202 of the high-gain antenna module 20, so as to effectively control the antenna cost while taking into account the performance.

[0063] In some embodiments, the housing 10 includes an ear hook housing, and the high-gain antenna module 20 is disposed inside the ear hook housing.

[0064] Specifically, as shown in the above embodiment, the high-gain antenna module 20 should be set in the non-ear part of the Bluetooth headset to ensure that the Bluetooth communication will not be affected by the human body and improve the reliability of Bluetooth communication. Figure 6 The housing 10 includes an earphone head housing (not shown) and an ear hook housing 13, wherein the earphone head housing is used to open a sound outlet and a sound receiving hole, and the ear hook housing 13 is used to assist wearing.

[0065] Furthermore, in some embodiments, the housing 10 includes an ear rod housing, and the high-gain antenna module 20 is disposed inside the ear rod housing.

[0066] Specifically, the solution of this embodiment also ensures that the Bluetooth communication will not be affected by the human body, and the high-gain antenna module 20 should be set in the non-in-ear part of the Bluetooth headset. Figure 1 The housing 10 includes an earphone head housing 11 and an ear stem housing 12, wherein the earphone head housing 11 is used to open a sound outlet and a sound receiving hole, and the ear stem housing 12 is used to accommodate related devices for Bluetooth communication and signal processing.

[0067] In some embodiments, the gain range of the high-gain antenna module is -3dbi to 0dbi. Specifically, in the embodiment of the present invention, when worn, the gain range of the high-gain antenna module is set to -3dbi to 0dbi, that is, -3dbi or any value between -3dbi and 0dbi, so that longer-distance communication can be achieved.

[0068] In order to facilitate understanding of the technical solution of the present application, the present application is explained below in conjunction with more detailed embodiments.

[0069] The high-gain antenna module 20 includes a substrate 202, a ground layer 201 and a radiation layer 203. The substrate 202 is in a rectangular shape and is disposed between the printed circuit board of the earphone and the outer side 103 of the housing 10. The first side surface of the substrate 202 is close to the inner side 101 of the housing 10, and the second side surface of the substrate 202 is close to the outer side 103 of the housing 10. The length of the substrate 202 is set to 42 mm, the width is 10 mm, and the height (i.e., the thickness of the substrate 202) is set to 3 mm. Among them, the ground layer 201 is a copper ground layer 201, with a length of 42 mm, a width of 10 mm, and a thickness of 0.02 mm, and is flatly disposed on the second side surface of the substrate 202. The radiation layer 203 includes a first radiation portion 2031 and a second radiation portion 2032. The first radiation portion 2031 has a length of 32 mm and a width of 10 mm and is flatly arranged on one end of the first side surface of the substrate 202. The second radiation portion 2032 has a length of 10 mm and a width of 0.5 mm and is directly connected to the first radiation portion 2031 and arranged on the other end of the first side surface of the substrate 202. A welding point is arranged on a surface between the first side surface and the second side surface of the substrate 202. The second radiation portion 2032 extends to the welding point and is connected to the RF base 61 through the welding point. The RF base 61 is connected to the Bluetooth chip 62. The RF base 61 and the SCO can also be arranged on the silver circuit board. In this way, a Bluetooth headset with high gain is constructed. During use by the user, when the high-gain antenna module 20 is in operation, the energy generated toward the user is reflected outward (away from the user), thereby enhancing the external radiation capability of the high-gain antenna module 20, thereby effectively improving the communication distance of the Bluetooth headset, that is, improving the communication distance between Bluetooth headsets.

[0070] In more detail, the Bluetooth headset of the above embodiment is verified, and its S11 return loss, Smith chart (Smith chart, a graph describing the impedance characteristics of the headset), and antenna radiation efficiency graph are respectively as shown in FIG. Figure 7 , Figure 8 and Fig. 9 As shown, it can be seen that the radiation efficiency of the high-gain antenna module 20 provided by the present application is basically consistent with the efficiency of a conventional earphone antenna. Fig.10 and Fig.11 By comparing the antenna radiation pattern shown, it can be seen that the gain of the high-gain antenna module 20 of the embodiment of the present application is -1.78dBi, while the gain of the conventional antenna is -5.76dBi. The gain of the high-gain antenna module 20 is 4dB higher than that of the conventional one, which is an obvious advantage. Therefore, if both bilateral Bluetooth headsets (left and right Bluetooth headsets) are equipped with the high-gain antenna module 20 of the present application, the use distance can be doubled, that is, it can meet the long-distance Bluetooth data transmission scenario of more than 100m.

[0071] An embodiment of the present application also provides a headphone device, comprising two Bluetooth headphones as described above.

[0072] Specifically, the Bluetooth headset is as shown in the above embodiments and the accompanying drawings, and the two Bluetooth headsets are respectively a left ear headset and a right ear headset. In more detail, in one embodiment, the Bluetooth headset also includes a charging box, and both Bluetooth headsets can be stored in the charging box for charging.

[0073] The above-mentioned Bluetooth device, any Bluetooth headset includes a housing 10, a high-gain antenna module 20 and a signal processing device. By setting the high-gain antenna module 20 inside the housing 10 of the Bluetooth headset, data transmission between Bluetooth headsets is achieved. The high-gain antenna module 20 includes a substrate 202, a radiation layer 203 and a ground layer 201, wherein the radiation layer 203 is arranged on the first side surface of the substrate 202, and the ground layer 201 is arranged on the second side surface of the substrate 202. When the high-gain antenna is arranged inside the housing 10, the first side surface of the substrate 202 is specifically arranged close to the inner side 101 of the housing 10 where the sound outlet is arranged, and the second side surface of the substrate 202 is arranged close to the outer side 103 opposite to the inner side 101 of the housing 10. Through this solution, when the earphone is worn, the inner side 101 of the housing 10 with the sound outlet is close to the user, while the outer side 103 is far away from the user. In this way, the energy generated by the high-gain antenna module 20 when it is running and directed toward the user can be reflected outward (away from the user), thereby enhancing the external radiation capability of the high-gain antenna module 20. In this solution, both Bluetooth earphones can reflect energy, ensuring that data can be exchanged between the two Bluetooth earphones at a long distance, thereby improving the communication reliability between the Bluetooth earphones.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A Bluetooth headset, characterized in that: include: case; A high-gain antenna module is arranged inside the shell, and the high-gain antenna module includes a substrate, a ground layer and a radiation layer, wherein the radiation layer is arranged on a first side surface of the substrate close to the inner side of the shell, and the ground layer is arranged on a second side surface of the substrate close to the outer side of the shell, wherein the inner side of the shell is a side of the shell where a sound outlet hole is arranged, and the outer side of the shell is arranged opposite to the inner side of the shell; The signal processing device is electrically connected to the radiation layer.

2. The Bluetooth headset according to claim 1, characterized in that: The radiation layer includes a first radiation portion and a second radiation portion that are connected, the second radiation portion is electrically connected to the signal processing device, the width of the first radiation portion is greater than the width of the second radiation portion, and / or the length of the first radiation portion is greater than the length of the second radiation portion.

3. The Bluetooth headset according to claim 2, characterized in that: The first radiation portion has a width consistent with that of the substrate and is flatly arranged on the first side surface of the substrate.

4. The Bluetooth headset according to claim 2, characterized in that: The ratio of the width of the first radiation portion to the width of the second radiation portion is 10:1-100:

1.

5. The Bluetooth headset according to claim 4, characterized in that: The second radiation portion has a width of 0.1 mm to 1 mm and is flatly arranged on the first side surface of the substrate.

6. The Bluetooth headset according to any one of claims 1 to 5, characterized in that: The thickness of the stratum is 0.01 mm-0.1 mm; And / or, the thickness of the radiation layer is 0.01 mm-0.1 mm; And / or, the thickness of the substrate is 2 mm-5 mm.

7. The Bluetooth headset according to any one of claims 1 to 5, characterized in that: The Bluetooth headset also includes a printed circuit board, and the printed circuit board is arranged on a side of the high-gain antenna module close to the ground layer.

8. The Bluetooth headset according to any one of claims 1 to 5, characterized in that: The signal processing device comprises a Bluetooth chip and a radio frequency base, the base is further provided with welding points, the radiation layer is connected to the radio frequency base via the welding points, and the radio frequency base is connected to the Bluetooth chip.

9. The Bluetooth headset according to any one of claims 1 to 5, characterized in that: The housing comprises an ear hook housing, and the high-gain antenna module is arranged inside the ear hook housing; Alternatively, the shell includes an ear rod shell, and the high-gain antenna module is arranged inside the ear rod shell.

10. The Bluetooth headset according to any one of claims 1 to 5, characterized in that: The gain range of the high-gain antenna module is -3dbi to 0dbi.

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