Bluetooth earphone antenna and Bluetooth earphone

Abstract

The utility model provides a Bluetooth earphone antenna and a Bluetooth earphone. The Bluetooth earphone antenna comprises a touch control unit, a radiation unit and a control circuit electrically connected with the touch control unit and the radiation unit. The touch control unit comprises a main board, a touch area and a touch control chip; the touch control unit comprises a touch control area, the radiation unit comprises a radiation antenna area, the touch control area and the radiation antenna area are integrally arranged, the touch control unit generates a first signal, the radiation unit generates a second signal, and the control circuit controls the first signal and the second signal to be separated so as to avoid mutual interference. According to the Bluetooth earphone antenna of the utility model, not only can the procedures of antenna assembling and attaching be reduced and the complexity of antenna design be reduced, but also the overall radiation efficiency of the antenna can be obviously improved without the influence of the touch control unit.

Description

Technical Field

[0001] The utility model relates to the field of communication technologies, and particularly to a Bluetooth headset antenna and a Bluetooth headset. Background Art

[0002] At present, the touch control module and the antenna module of current wireless Bluetooth headset products are two independent working units. The wiring part of the antenna on the headset is close to the touch control area, causing mutual interference between the two in space. With the miniaturization of headset products day by day, the touch control area gradually occupies the clearance area of the antenna, increasing the difficulty of antenna design. The touch control area is designed as a metal layer. When a finger approaches, an induced capacitance is generated by coupling with the metal sheet. After this capacitance signal is transmitted to the touch control chip, the touch control function is realized. The design of the antenna itself is also a metal layer, and electromagnetic waves are radiated through the antenna radiation sheet. The touch control module and the antenna module require two independent metal units, which will increase the assembly and attachment processes and also increase the complexity of antenna design.

[0003] In view of this, it is indeed necessary for the utility model to provide a novel Bluetooth headset antenna and a Bluetooth headset using this antenna. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a Bluetooth headset antenna, which can not only reduce the assembly and attachment processes of the antenna and the complexity of antenna design, but also significantly improve the overall radiation efficiency of the antenna without the influence of the touch control unit.

[0005] To solve the above technical problems, the utility model provides a Bluetooth headset antenna. The Bluetooth headset antenna includes a touch control unit, a radiation unit, and a control circuit electrically connected to the touch control unit and the radiation unit. The touch control unit includes a main board, a touch area, and a touch control chip. The radiation unit includes a radiation antenna area. The touch area and the radiation antenna area are integrally arranged. The touch control unit generates a first signal, the radiation unit generates a second signal, and the control circuit controls the separation of the first signal and the second signal to avoid mutual interference.

[0006] As a further improvement of the utility model, the touch area and the radiation antenna area are respectively configured as two metal patches, and the two metal patches are integrally formed.

[0007] As a further improvement of the utility model, the main board, the touch area, and the touch control chip are electrically connected. When approaching the touch area, the touch area generates the first signal, and the first signal is transmitted to the touch control chip through the elastic sheet connected to the main board.

[0008] As a further improvement of the present utility model, the metal patch is configured as a PFC, and the radiation antenna area generates the second signal under excitation.

[0009] As a further improvement of the present utility model, the first signal is configured as a low-frequency signal, and the second signal is configured as a high-frequency signal.

[0010] As a further improvement of the present utility model, the control circuit includes a first electronic component, a second electronic component, and a third electronic component. The first electronic component is connected to the touch area and / or the radiation antenna area and then connected in series with the touch control chip. The second electronic component is connected in parallel with the first electronic component and the third electronic component. The third electronic component is grounded and connected in parallel with the RF terminal.

[0011] As a further improvement of the present utility model, the first electronic component and the third electronic component are respectively configured as a first inductor and a second inductor, and the second electronic component is configured as a capacitor.

[0012] As a further improvement of the present utility model, the first signal is configured as a capacitive signal of a low-frequency signal. This capacitive signal is transmitted to the touch control chip via the first inductor, and the second signal is disconnected at the first inductor. The first signal is disconnected and transmitted at the capacitor position, and the second signal passes through the capacitor and is transmitted to the RF terminal for signal radiation.

[0013] As a further improvement of the present utility model, the second inductor filters the low-frequency first signal, and the inductance value of the first inductor is greater than the inductance value of the second inductor.

[0014] The purpose of the present utility model is to provide a Bluetooth headset to better apply the above Bluetooth headset antenna.

[0015] To solve the above technical problems, the present utility model provides a Bluetooth headset, and the Bluetooth headset includes the aforementioned Bluetooth headset antenna.

[0016] The present utility model provides a Bluetooth headset antenna and a Bluetooth headset. The Bluetooth headset antenna includes a touch control unit, a radiation unit, and a control circuit electrically connected to the touch control unit and the radiation unit. The touch control unit includes a main board, a touch area, and a touch control chip. The radiation unit includes a radiation antenna area. The touch area and the radiation antenna area are integrally arranged. The touch control unit generates a first signal, the radiation unit generates a second signal, and the control circuit controls the separation of the first signal and the second signal to avoid mutual interference. The Bluetooth headset antenna of the present utility model can not only reduce the antenna assembly and attachment processes and the complexity of antenna design, but also significantly improve the overall radiation efficiency of the antenna without the influence of the touch control unit. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the Bluetooth headset antenna of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the control circuit in the present utility model.

[0019] Figure 3 It is a simulation comparison diagram of S11 of the Bluetooth headset antenna of the present utility model and S11 of a traditional headset.

[0020] Figure 4 It is a comparison diagram of the radiation efficiency of the Bluetooth headset antenna of the present utility model and the radiation efficiency of a traditional headset. Detailed Embodiments

[0021] The following further elaborates on the Bluetooth headset antenna 100 proposed by the present utility model and the headset using this antenna in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present utility model. In addition, the structures shown in the drawings are often part of the actual structures. In particular, the focus to be shown in each drawing is different, and sometimes different scales are used.

[0022] At the current stage, the touch control module and the antenna module of TWS Bluetooth headset products are two independent working units. The antenna routing part on the headset is adjacent to the touch control area, which will cause mutual interference between the two in space. With the increasing miniaturization of headset products, the touch control area gradually occupies the clearance area of the antenna, increasing the difficulty of antenna design.

[0023] Such as Figure 1 and 2As shown, the present utility model provides a Bluetooth headset antenna 100, which includes a touch control unit, a radiation unit, and a control circuit electrically connected to the touch control unit and the radiation unit; the touch control unit includes a main board, a touch area 10, and a touch control chip; the radiation unit includes a radiation antenna area 20, the touch area 10 and the radiation antenna area 20 are integrally arranged, the touch control unit generates a first signal, the radiation unit generates a second signal, and the control circuit controls the separation of the first signal and the second signal to avoid mutual interference.

[0024] With such a setting, the Bluetooth headset antenna 100 of the present utility model can not only reduce the processes of antenna assembly and attachment, reduce the complexity of antenna design, but also significantly improve the overall radiation efficiency of the antenna without the influence of the touch control unit.

[0025] Further, the touch area 10 and the radiation antenna area 20 are respectively configured as two metal patches, and the two metal patches are integrally formed. The main board, the touch area 10, and the touch control chip are electrically connected. When approaching the touch area 10, the touch area 10 generates the first signal, and the first signal is transmitted to the touch control chip through the elastic piece connected to the main board. Thus, the integral formation of the touch area 10 and the radiation antenna area 20 means that when setting the touch area 10 and the radiation antenna area 20, there is no need to disconnect or separate the two, and a whole metal patch can be directly laid flat. Such a setting can effectively reduce the complexity of antenna design and reduce the processes of overall antenna assembly and attachment.

[0026] Furthermore, the metal patch is configured as a PFC, and the radiation antenna area 20 generates the second signal under excitation. The first signal is configured as a low-frequency signal, and the second signal is configured as a high-frequency signal. As Figure 2 shown, further, the control circuit includes a first electronic component, a second electronic component C, and a third electronic component. The first electronic component is connected to the touch area 10 and / or the radiation antenna area 20 and then connected in series with the touch control chip. The second electronic component C is connected in parallel with the first electronic component and the third electronic component. The third electronic component is grounded and connected in parallel with the RF terminal.

[0027] Specifically, the touch area 10 of the Bluetooth headset antenna 100 is a metal patch. If a finger approaches the metal patch on the FPC, an induced capacitance signal, i.e., the first signal, will be generated. The induced capacitance signal is transmitted to the touch control chip through the elastic sheet connected to the main board. The touch control chip controls the relevant operations of the Bluetooth headset according to the value of the induced capacitance. This induced capacitance signal is the first signal, and the first signal belongs to a low-frequency signal. The radiation antenna area 20 is also a metal patch, and the metal patch of the radiation antenna area 20 is integrally formed with the metal patch of the touch area 10. The radiation antenna area 20 generates a second signal, which is an electromagnetic signal, and the signal frequency generated by the antenna is very high and belongs to a high-frequency signal. In the present utility model, the metal patches used for the radiation antenna area 20 and the touch area 10 are integrated into one, and the high-frequency signal and the low-frequency signal are separated through the control circuit so that they do not affect each other.

[0028] Further, the first electronic component and the third electronic component are respectively configured as a first inductor L1 and a second inductor L2, and the second electronic component C is configured as a capacitor. The first signal is configured as a capacitive signal of a low-frequency signal, and this capacitive signal is transmitted to the touch control chip via the first inductor L1, and the second signal is disconnected at the first inductor L1; the first signal is disconnected and transmitted at the capacitor position, and the second signal passes through the capacitor and is transmitted to the radio frequency end for signal radiation.

[0029] Specifically, the induced capacitance signal required for Bluetooth headset touch control, i.e., the first signal, is transmitted to the touch control chip end via the first inductor L1. The first inductor L1 is configured as an inductor component with a relatively large inductance value. Thus, for the antenna signal, i.e., the second signal, it is equivalent to a short circuit, that is, the touch control chip and the antenna are disconnected and will not affect the antenna radiation. The first inductor L1 is equivalent to a path for the low-frequency touch signal, i.e., the first signal, and thus will not affect the touch signal. The capacitor in the control circuit is equivalent to a path for the signal generated by the radiation antenna area 20, but is equivalent to an open circuit for the low-frequency signal, i.e., the first signal. That is to say, the touch area 10 and the antenna link are in a disconnected state, and the radio frequency end of the antenna will not have any impact on the touch area 10. That is, although the structural designs of the touch area 10 and the radiation antenna area 20 are integrally arranged, under the action of the control circuit, they can work independently and will not interfere with each other.

[0030] Further, the second inductor L2 filters the low-frequency first signal, and the inductance value of the first inductor L1 is greater than the inductance value of the second inductor L2. That is to say, the second inductor L2 filters the influence of the low-frequency signal at the radio frequency end on touch control. When a low-frequency signal passes through the radio frequency end and reaches the antenna end, the second inductor L2 is equivalent to a short circuit for the low-frequency signal, that is, the signal will be directly filtered by the second inductor L2. As Figure 3 and4 As shown, the red line is the Bluetooth headset antenna 100 of the present utility model, and the green line is the traditional headset antenna. It can be seen that the overall efficiency of the Bluetooth headset antenna 100 of the present utility model has increased by 1 - 1.5 dB compared to the radiation efficiency of the traditional headset antenna.

[0031] In summary, the present utility model provides a Bluetooth headset antenna 100 and a Bluetooth headset. The Bluetooth headset antenna 100 includes a touch control unit, a radiation unit, and a control circuit electrically connected to the touch control unit and the radiation unit; the touch control unit includes a main board, a touch area, and a touch control chip; the radiation unit includes a radiation antenna area 20. The touch area 10 and the radiation antenna area 20 are integrally arranged. The touch control unit generates a first signal, the radiation unit generates a second signal, and the control circuit controls the separation of the first signal and the second signal to avoid mutual interference. The Bluetooth headset antenna 100 of the present utility model can not only reduce the antenna assembly and attachment process and the complexity of antenna design, but also significantly improve the overall radiation efficiency of the antenna without the influence of the touch control unit.

[0032] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. In addition, the different parts among the various embodiments can also be combined and used. The present utility model does not limit this.

[0033] The above description is only a description of the preferred embodiments of the present utility model and does not limit the scope of the present utility model in any way. Any changes and modifications made by those of ordinary skill in the art of the present utility model based on the above disclosure are within the protection scope of the claims.

Claims

1. A Bluetooth headset antenna, characterized in that: The Bluetooth headset antenna includes a touch control unit, a radiation unit, and a control circuit electrically connected to the touch control unit and the radiation unit; the touch control unit includes a main board, a touch area, and a touch control chip; the radiation unit includes a radiation antenna area, and the touch area and the radiation antenna area are integrally arranged. The touch control unit generates a first signal, the radiation unit generates a second signal, and the control circuit controls the separation of the first signal and the second signal to avoid mutual interference.

2. The Bluetooth headset antenna according to claim 1, wherein: The touch area and the radiation antenna area are respectively configured as two metal patches, and the two metal patches are integrally formed.

3. The Bluetooth headset antenna according to claim 2, wherein: The main board, the touch area, and the touch control chip are electrically connected. When approaching the touch area, the touch area generates the first signal, and the first signal is transmitted to the touch control chip through the elastic piece connected to the main board.

4. The Bluetooth headset antenna according to claim 3, wherein: The metal patch is configured as a PFC, and the radiation antenna area generates the second signal under excitation.

5. The Bluetooth headset antenna according to claim 4, wherein: The first signal is configured as a low-frequency signal, and the second signal is configured as a high-frequency signal.

6. The Bluetooth headset antenna according to claim 5, characterized in that: The control circuit includes a first electronic component, a second electronic component, and a third electronic component. The first electronic component is connected to the touch area and / or the radiation antenna area and then connected in series with the touch control chip. The second electronic component is connected in parallel with the first electronic component and the third electronic component. The third electronic component is grounded and connected in parallel with the RF terminal.

7. The Bluetooth headset antenna according to claim 6, wherein: The first electronic component and the third electronic component are respectively configured as a first inductor and a second inductor, and the second electronic component is configured as a capacitor.

8. The Bluetooth headset antenna according to claim 7, wherein: The first signal is configured as a capacitive signal of a low-frequency signal, and this capacitive signal is transmitted to the touch control chip via the first inductor. The second signal is disconnected at the first inductor; the first signal is disconnected and transmitted at the capacitor position, and the second signal passes through the capacitor and is transmitted to the RF terminal for signal radiation.

9. The Bluetooth headset antenna according to claim 8, characterized in that: The second inductor filters the low-frequency first signal, and the inductance value of the first inductor is greater than the inductance value of the second inductor.

10. A Bluetooth headset, characterized in that: The Bluetooth headset includes the Bluetooth headset antenna according to any one of claims 1-9.

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