CN112738679A

CN112738679A - Signal transceivers, electronic devices, wearable devices and wireless earphones

Info

Publication number: CN112738679A
Application number: CN202011553194.XA
Authority: CN
Inventors: 张友坤
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-04-30
Also published as: WO2022134901A1

Abstract

The application relates to a signal transceiver, electronic equipment, wearing equipment and wireless earphone. The signal transceiver comprises a first touch sensing module and a second touch sensing module. The first touch sensing module comprises a first sensor, a first touch sensing module, a low-pass filter circuit, a wireless transmission module and a high-pass filter circuit. The first inductor is a conductor and is used for detecting touch operation; the first inductor is provided with a public end, and the first touch induction module is connected to the public end through a low-pass filter circuit. The wireless transmission module is connected to the common terminal through a high-pass filter circuit and is configured to feed an excitation current to the first inductor through the common terminal, so that the first inductor radiates a radio frequency signal. The second touch sensing module comprises a second sensor and a second touch sensing module; the second inductor and the first inductor are arranged at intervals and are electrically isolated from each other; the second inductor is used for detecting touch operation. The signal transceiver can realize the sharing of the wireless transmission function and the capacitive touch function.

Description

Signal receiving and transmitting device, electronic equipment, wearable equipment and wireless earphone

Technical Field

The application relates to the technical field of mobile communication, in particular to a signal receiving and transmitting device, electronic equipment, wearable equipment and a wireless earphone.

Background

Bluetooth headsets with capacitive touch sensing functions (e.g., functions of single-click control of music pause/play, double-click music switch, long-press call rejection, etc.) are increasingly widely used due to their features of rich functionality, convenient use, etc.

In order to facilitate the touch operation of the user, the capacitive touch sensing module of the bluetooth headset is usually disposed on a side of the headset housing away from the human ear. For example, when the user wears the bluetooth headset, a part of the headset housing is embedded in the ear canal of the user, the other part is exposed outside, and the capacitive touch sensing module is disposed in the exposed part of the headset housing so as to facilitate the touch control of the user. Because bluetooth headset size is less, antenna module in the bluetooth headset can only set up the opposite side of keeping away from electric capacity touch-sensitive module in the earphone casing, and this just makes antenna module be located the earphone casing generally and imbeds within the part of people's ear, and in bluetooth headset's use, antenna module can be sheltered from by user's ear, head, and signal transmission receives harmful effects, makes wireless headset's communication quality lower.

Disclosure of Invention

The embodiment of the application provides a signal transceiver, electronic equipment, wearing equipment and wireless earphone.

In a first aspect, an embodiment of the present application provides a signal transceiver, which includes a first touch sensing module and a second touch sensing module. The first touch induction module comprises a first inductor, a first touch induction module, a low-pass filter circuit, a wireless transmission module and a high-pass filter circuit; the first inductor is a conductive body and is configured to detect a touch operation; the first inductor is provided with a common end, and the first touch induction module is connected to the common end through a low-pass filter circuit and is configured to process an electric signal corresponding to touch operation induced by the first inductor. The wireless transmission module is connected to the common terminal through a high-pass filter circuit and is configured to feed an excitation current to the first inductor through the common terminal, so that the first inductor radiates a radio frequency signal. The second touch sensing module comprises a second sensor and a second touch sensing module; the second inductor and the first inductor are arranged at intervals and are electrically isolated from each other; the second inductor is configured to detect a touch operation, and the second touch sensing module is configured to process an electrical signal corresponding to the touch operation sensed by the second inductor.

In a second aspect, an embodiment of the present application provides an electronic device, which includes a housing and the signal transceiver device described above, where the signal transceiver device is disposed in the housing.

In a third aspect, an embodiment of the present application further provides a wireless headset, including an electroacoustic module, a housing, and the signal transceiver device mentioned above, where the signal transceiver device is disposed in the housing, and the first inductor and the second inductor are attached to an inner surface of the housing.

In a fourth aspect, an embodiment of the present application further provides a wearable device, which is suitable for being worn by a user, and includes a housing and the above signal transceiver, where the signal transceiver is disposed in the housing, and the first inductor and the second inductor are disposed in the housing.

In the signal transceiver device, the electronic device, and the wireless headset provided in the embodiments of the present application, the first touch sensing module and the wireless transmission module are connected in parallel to a common terminal of the first inductor, wherein the first touch sensing module is configured to process an electrical signal corresponding to a touch operation induced by the first inductor, and the wireless transmission module is configured to feed an excitation current to the first inductor via the common terminal so that the first inductor radiates a radio frequency signal. Meanwhile, the high-pass filter circuit only allows high-frequency signals to pass, the low-pass filter circuit only allows low-frequency signals to pass, the frequency of signals transmitted by the wireless transmission module is usually in a high-frequency band, and the frequency of signals transmitted by the touch sensing module is usually in a low-frequency band, so that the high-frequency signals transmitted/received by the wireless transmission module cannot be transmitted into the first touch sensing module in the working process of the earphone; the low-frequency signals sent/received by the first touch sensing module cannot be transmitted into the wireless transmission module, namely, the low-frequency signals and the wireless transmission module do not interfere with each other and work independently. Therefore, the signal transceiver provided in the embodiment of the present application can realize common reception of the radio frequency signal and the touch signal, and the sensitivity of the touch sensing module and the matching sensitivity of the wireless transmission module do not interfere with each other, so that a higher sensitivity of the touch sensing module and a higher matching sensitivity of the wireless transmission module can be realized.

Furthermore, the signal transceiver device is provided with a first inductor and a second inductor which are electrically isolated from each other, the second inductor can be used for detecting touch operation, the first inductor and the second inductor are combined to form a touch panel of the electronic equipment or the wireless earphone, and a user is allowed to control the electronic equipment or the wireless earphone by touching the first inductor and the second inductor, so that a larger touch area can be provided, the convenience of user operation is improved, enough trigger space is provided for various touch instructions, and the control difficulty is lower.

Drawings

In order to more clearly illustrate the technical solution of the application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a structure of a signal transceiver provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a first touch sensing module and a low-pass filter circuit of the signal transceiver shown in fig. 1.

Fig. 3 is a schematic circuit structure diagram of the first touch sensing module and the low pass filter circuit shown in fig. 2.

Fig. 4 is a schematic structural diagram of a wireless transmission module and a high-pass filter circuit of the signal transceiver shown in fig. 1.

Fig. 5 is another schematic structural diagram of the wireless transmission module and the high-pass filter circuit of the signal transceiver shown in fig. 1.

Fig. 6 is a schematic circuit structure diagram of a first touch sensing module of the signal transceiver shown in fig. 1.

Fig. 7 is a schematic circuit diagram of another circuit structure of the first touch sensing module of the signal transceiver shown in fig. 1.

Fig. 8 is a schematic circuit diagram of another circuit structure of the first touch sensing module of the signal transceiver shown in fig. 1.

Fig. 9 is a schematic circuit structure diagram of the first touch sensing module shown in fig. 8.

Fig. 10 is a schematic circuit diagram of another circuit structure of the first touch sensing module shown in fig. 8.

Fig. 11 is a schematic circuit diagram of another circuit structure of the first touch sensing module of the signal transceiver shown in fig. 1.

Fig. 12 is a schematic structural diagram of a first sensor of the first touch sensing module shown in fig. 11.

Fig. 13 is a schematic diagram of another structure of a signal transceiver according to an embodiment of the present application.

Fig. 14 is a schematic circuit structure diagram of a second touch sensing module of the signal transceiver shown in fig. 13.

Fig. 15 is a schematic diagram of another structure of a signal transceiver according to an embodiment of the present application.

Fig. 16 is a schematic diagram of still another structure of a signal transceiver according to an embodiment of the present application.

Fig. 17 is a schematic diagram of a structure of an electronic device according to an embodiment of the present application.

Fig. 18 is a schematic structural view of a signal transceiver and a bracket of the electronic device shown in fig. 17.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As used in embodiments herein, "electronic device" includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal", an "electronic apparatus", and/or an "electronic device". Examples of electronic devices include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; as well as conventional laptop and/or palmtop receivers, gaming consoles, or other electronic devices that include radiotelephone transceivers.

At present, wireless earphones are increasingly widely used due to the characteristics of rich functions, convenience in use and the like. The wireless headset is generally configured with an antenna module of a touch sensing module, where the antenna module is used to implement bluetooth/wireless connection, and the touch sensing module is used to implement a touch function of the wireless headset. In order to facilitate the touch operation of the user, the capacitive touch sensing module of the wireless headset is usually disposed on a side of the headset housing away from the human ear. Due to the small size of the wireless headset, the antenna module in the wireless headset can only be arranged on the other side of the headset housing far away from the capacitive touch sensing module, so that the antenna module is usually positioned in the part of the headset housing embedded in the human ear. In the use process of the wireless earphone, the antenna module can be shielded by the ear and the head of a user, and the signal transmission is adversely affected, so that the communication quality of the wireless earphone is low.

To above-mentioned problem, this application inventor discovers after a large amount of, repeated research, and the mounted position and the earphone shell structure to present wireless earphone's antenna module improve, make inside the earphone shell can hold electric capacity touch-sensitive module and antenna module simultaneously with one side to set up antenna module in the one side that earphone shell deviates from the people's ear, can avoid antenna module to be sheltered from by user's head, ear, can improve wireless earphone's communication quality. However, for the antenna module at this position, the inventor further found that, due to the limited space available for the antenna and the capacitive touch sensing module in the earphone housing, the capacitive touch sensing module and the antenna module are very close to each other, and mutual interference easily occurs between the sensing sensitivity of the touch sensing module and the matching sensitivity of the antenna module.

Therefore, the present inventors have made an effort to provide an antenna device with high sensitivity and high signal transmission quality so that electronic devices such as wireless headsets can achieve both high wireless communication quality and sensitive touch operation. After a great deal of repeated research, the inventor proposes the signal transceiver device of the embodiment of the present application, and the electronic device and the wireless headset having the signal transceiver device. The signal transceiver comprises a wireless transmission module, a first touch induction module and a second touch induction module, wherein the first touch induction module comprises a first inductor, a first touch induction module, a low-pass filter circuit and a high-pass filter circuit. The first inductor is a conductive body and is configured to detect a touch operation, and the first inductor is provided with a common terminal. The first touch sensing module is connected to the common terminal through a low-pass filter circuit and is configured to process an electric signal corresponding to a touch operation sensed by the first sensor. The wireless transmission module is connected to the common terminal through a high-pass filter circuit and is configured to feed an excitation current to the first inductor through the common terminal, so that the first inductor radiates a radio frequency signal. The second touch sensing module comprises a second sensor and a second touch sensing module, the second sensor and the first sensor are arranged at intervals and are electrically isolated from each other, the second sensor is configured to detect touch operation, and the second touch sensing module is configured to process electric signals corresponding to the touch operation sensed by the second sensor.

In the signal transceiver, the first touch sensing module and the wireless transmission module are connected in parallel to a common end of the first inductor, wherein the first touch sensing module is configured to process an electrical signal corresponding to a touch operation induced by the first inductor, and the wireless transmission module is configured to feed an excitation current to the first inductor via the common end so that the first inductor radiates a radio frequency signal. Meanwhile, the high-pass filter circuit only allows high-frequency signals to pass, the low-pass filter circuit only allows low-frequency signals to pass, the frequency of signals transmitted by the wireless transmission module is usually in a high-frequency band, and the frequency of signals transmitted by the touch sensing module is usually in a low-frequency band, so that the high-frequency signals transmitted/received by the wireless transmission module cannot be transmitted into the first touch sensing module in the working process; the low-frequency signals sent/received by the first touch sensing module cannot be transmitted into the wireless transmission module, namely, the low-frequency signals and the wireless transmission module do not interfere with each other and work independently. Therefore, the signal transceiver provided in the embodiment of the present application can realize common reception of the radio frequency signal and the touch signal, and the sensitivity of the touch sensing module and the matching sensitivity of the wireless transmission module do not interfere with each other, so that a higher sensitivity of the touch sensing module and a higher matching sensitivity of the wireless transmission module can be realized. Furthermore, the signal transceiver device is provided with a first inductor and a second inductor which are electrically isolated from each other, the second inductor can be used for detecting touch operation, the first inductor and the second inductor are combined to form a touch panel of the electronic equipment or the wireless earphone, and a user is allowed to control the electronic equipment or the wireless earphone by touching the first inductor and the second inductor, so that a larger touch area can be provided, the convenience of user operation is improved, enough trigger space is provided for various touch instructions, and the control difficulty is lower.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 1, the present embodiment provides a signal transceiver 100, which includes a wireless transmission module 20, a first touch sensing module 10, and a second touch sensing module 30.

The first touch sensing module 10 includes a first sensor 12, a first touch sensing module 14, a low pass filter circuit 15 and a high pass filter circuit 17.

The first sensor 12 is a conductive body and is configured to detect a touch operation. The first sensor 12 has a conductive property, for example, the first sensor 12 may include a metal sheet (e.g., a copper foil, a silver foil, a gold foil, etc.), and may further include a conductive film, and by providing the conductive first sensor 12, the first touch sensing module 14 is configured as a capacitive touch sensor, which is more sensitive to a touch of a human body and prevents other objects from being touched by mistake. The first sensor 12 is provided with a common terminal 121, and the first touch sensing module 14 is connected to the common terminal 121 through the low pass filter circuit 15, so as to be configured to process an electrical signal corresponding to a touch operation sensed by the first sensor 12. The wireless transmission module 20 is connected to the common terminal 121 through the high pass filter circuit 17, so as to be configured to feed an excitation current to the first inductor 12 through the common terminal 121, so that the first inductor 12 radiates a radio frequency signal. In this embodiment, the first touch sensing module 14 and the wireless transmission module 20 are simultaneously connected to the common terminal 121 of the first inductor 12, so that the wireless transmission function and the capacitive touch function can be shared by the same first inductor 12.

Referring to fig. 2, in some embodiments, the first touch sensing module 14 includes a first touch sensing chip 141 and a first decoupling unit 143, and the first decoupling unit 143 is connected to the low pass filter circuit 15 and the first touch sensing chip 141 respectively. Further, the first decoupling unit 143 may be connected between the low pass filter circuit 15 and the first touch sensing chip 141.

The first touch sensing chip 141 is configured to process an electrical signal generated based on a touch operation detected by the first sensor 12 to determine a corresponding touch control instruction. In some embodiments, the first sensor 12 can sense the static charge of the human body and cause a change in the capacitance value when the human body approaches (e.g. touches), and the first touch sensing chip 141 determines a corresponding touch control command according to the capacitance value generated by the static charge of the human body and a touch characteristic to perform a corresponding function, where the touch characteristic includes, but is not limited to: touch duration, touch path, touch area, touch frequency, etc. Further, in some embodiments, the first touch sensing chip 141 can adjust the sensing sensitivity of the capacitance value generated by the human body electrostatic charge, so as to reduce the occurrence probability of the false trigger signal.

In the embodiment of the present application, the first decoupling unit 143 may be configured to adjust the sensing sensitivity of a capacitance value generated by the electrostatic charge of the human body, and also be configured to filter signal noise of an electrical signal generated based on a touch operation detected by the first sensor 12, so that the first touch sensing module 14 has a higher accuracy sensitivity.

Referring to fig. 3, the first decoupling unit 143 may include a first resistor R1, a first inductor L1, and a first capacitor C1; the first touch sensing chip 141, the first resistor R1, the first inductor L1 and the low-pass filter circuit 15 are sequentially connected in series, one end of the first capacitor C1 is connected to a common point of the first resistor R1 and the first inductor L1, and the other end is grounded. In order to obtain higher touch detection sensitivity, the resistance value of the first resistor R1 may range from 0.8K Ω to 1.2K Ω (e.g., may be 1K Ω), the inductance value of the first inductor L1 may range from 80nH to 120nH (e.g., may be 100nH), and the capacitance value of the first capacitor C1 may range from 18pf to 2pf (e.g., may be 22 pf). It should be understood that in the embodiments of the present application, "common point" is understood to be a common point of a circuit, which is not limited to one physical node, but is further understood to be a point on the circuit where the electric potential is substantially the same.

In this embodiment, the low pass filter circuit 15 may include an inductor L, and the inductor L is connected in series with the first touch sensing module 14. Further, the inductor L is connected in series between the first inductor L1 and the common terminal 121, that is, one end of the inductor L may be connected to the common terminal 121, and the other end may be connected to the first inductor L1 of the first touch sensing module 14. In some embodiments, the inductance of the inductor L may range from 80nH to 200nH (for example, may be 100nH), so as to further reduce the interference of the radio frequency signal to the first touch sensing module 14. Of course, in other embodiments, the parameters of the first touch sensing module 14 may also be set, and are not limited in this respect. It will be appreciated that the impedance of the inductor increases with increasing frequency, i.e. lower frequency signals are easier to transmit through the inductor and higher frequency signals are harder to transmit through the inductor. Therefore, the low-pass filter circuit 15 can facilitate the passing of the low-frequency signal, and simultaneously prevent the passing of the high-frequency signal, thereby effectively isolating the high-frequency signal transmitted by the wireless transmission module 20 and reducing the interference of the radio-frequency signal to the first touch sensing module 14.

Referring to fig. 4, in some embodiments, the high-pass filter circuit 17 may include a first filter capacitor C, and the first filter capacitor C is connected in series with the wireless transmission module 20. Further, one end of the first filter capacitor C is connected to the wireless transmission module 20, and the other end is connected to the common terminal 121. In some embodiments, the capacitance value of the first filter capacitor C may range from 18 to 25pf (for example, may be 22pf), so as to further reduce the interference of the low frequency signal of the first touch sensing module 14 on the wireless transmission module 20. Of course, in other embodiments, the parameters of the wireless transmission module 20 and the frequency of the rf signal may also be set, and are not limited in this respect. By providing the first filter capacitor C, the high-pass filter circuit 17 can effectively isolate the low-frequency signal transmitted by the first touch sensing module 14.

Referring to fig. 5, in other embodiments, the high pass filter circuit 17 may include a second capacitor C2, a third capacitor C3, and a second inductor L2, a first end of the second capacitor C2 and a first end of the second inductor L2 are interconnected with the signal terminal of the wireless transmission module 20, a second end of the second inductor L2 and a first end of the third capacitor C3 are interconnected with the common terminal 121, and a second end of the first capacitor C1 and a second end of the second capacitor C2 are both grounded. It will be appreciated that the impedance of the capacitor decreases with increasing frequency, i.e. signals at higher frequencies are more easily transmitted through the capacitor and signals at lower frequencies are more difficult to transmit through the capacitor. In this way, the high-pass filter circuit 17 can facilitate the passing of high-frequency signals and prevent the passing of low-frequency signals, thereby effectively isolating the low-frequency signals transmitted by the first touch sensing module 14.

Referring to fig. 6, in some embodiments, the wireless transmission module 20 includes a feeding circuit 21 and a second filter capacitor 23, the second filter capacitor 23 is respectively connected to the high-pass filter circuit 17 and the feeding circuit 21, and further, the second filter capacitor 23 may be connected between the high-pass filter circuit 17 and the feeding circuit 21 and may be configured to further reduce an influence of a low-frequency signal transmitted by the first touch sensing module 14 on the wireless transmission module 20. In the embodiment, the capacitance of the second filter capacitor 23 may range from 18 to 25pf (for example, may be 22 pf). Further, in the embodiment of fig. 6, the first end of the low-pass filter circuit 15 is connected to the common terminal 121, the first end of the high-pass filter circuit 17 is connected to the common terminal 121, the second end of the low-pass filter circuit 15 is connected to the second end of the high-pass filter circuit 17 to form the connection terminal 141, one end of the second filter capacitor 23 is connected to the connection terminal 141, and the other end is connected to the feeding circuit 21, so that the circuit board area occupied by the circuit trace of the whole first touch sensing module 10 can be reduced, which is beneficial to reducing the cost of the signal transceiver 100.

The feeding circuit 21 is configured to feed an excitation current to the first inductor 12 through the common terminal 121, so that the first inductor 121 receives and transmits a radio frequency signal under excitation of the excitation current.

Referring to fig. 7, in some real-time embodiments, the wireless transmission module 20 may further include a sub-matching unit 25, and the sub-matching unit 25 is connected to the second filter capacitor 23 and the feeding circuit 21, respectively. Further, the sub-matching unit 25 may be connected to a common junction of the second filter capacitor 23 and the feeding circuit 21, and is used for adjusting the excitation current of the feeding circuit 21 to adjust the input impedance of the first inductor 12, so as to improve the transmission performance of the first inductor 12. The sub-matching unit 25 may comprise a combination of capacitance and/or inductance, etc. In the embodiment of the present application, the specific composition form of the sub-matching unit 25 is not further limited. In the embodiment shown in fig. 7, the sub-matching unit 25 may include a sub-matching inductor, one end of the sub-matching inductor is connected to the common point of the second filter capacitor 23 and the feeding circuit 21, and the other end of the sub-matching inductor is grounded, so that the matching unit of the feeding circuit 21 can be formed by combining the second filter capacitor 23 and the sub-matching inductor, the second filter capacitor 23 of the matching unit obtains dual multiplexing of filtering and matching impedance, the circuit structure is simplified, and the transmission performance of the first inductor 12 can be ensured to be better by setting appropriate capacitance and inductance.

Referring to fig. 8, in some embodiments, the first touch sensing module 10 may further include a matching circuit module 18, and the matching circuit module 18 is configured to adjust an impedance matching performance of the first sensor 12, so as to adjust the radio frequency signal of the first sensor 12. In this embodiment, one end of the matching circuit module 18 is grounded, and the other end is connected to the common node of the high-pass filter circuit 17 and the common node 121, so that the matching circuit module 18 can be used for performing fine tuning correction on the frequency band of the first radio frequency signal, and can also be used for adjusting the loop impedance of the first conductive branch 14, so as to improve the transmission performance of the first inductor 12, and at the same time, make the operating frequency band of the first inductor wider and the adjustment more reliable. In this embodiment, the matching circuit module 18 may include a combination of a capacitor and/or an inductor, and parameters of the capacitor and/or the inductor do not change with the operating frequency band of the signal transceiver 100 after the signal transceiver 100 is debugged, so as to ensure that the matching circuit module 18 can reliably improve the impedance matching performance of the first inductor 12, thereby improving the signal transmission performance of the signal transceiver 100.

Referring to fig. 9, in some embodiments, the matching circuit module 18 may include a matching inductor, one end of the matching inductor is connected between the high frequency filter circuit 17 and the common terminal 121, and the other end of the matching inductor is grounded, so that when the high frequency filter circuit 17 includes the first filter capacitor C, the matching module of the wireless transmission module 20 can be formed by combining the first filter capacitor C and the matching inductor, and the first filter capacitor C in the matching module obtains dual multiplexing of filtering and matching impedance, thereby simplifying the circuit structure, and by setting appropriate capacitance and inductance, the transmission performance of the first inductor 12 can be ensured to be better. In the present embodiment, the feeding circuits 21 in the matching circuit module 18 and the wireless transmission module 20 are respectively connected to both ends of the first filter capacitor C.

Referring to fig. 10, in other embodiments, the matching circuit module 18 may include a capacitor C0, an inductor L0, and an inductor L01, a first end of the inductor L01 is connected to the common terminal 121, a second end of the inductor L0 is connected to ground, and then the capacitor C0 is connected in series with the inductor L0 and then connected in parallel to two ends of the inductor L01, that is, a first end of the inductor L0 is connected to a first end of the inductor L01, a second end of the inductor C0 is connected to a first end of the capacitor C0, and a second end of the capacitor C0 is connected to a second end. The capacitance range of the capacitor C0 can be 0.5-2.7 pF, the inductance range of the inductor L0 can be 1 nH-5.1 nH, and the inductance range of the inductor L01 can be 5.6 nH-20 nH. By providing the matching circuit module 18 at the common terminal 121, the signal transmission performance of the signal transceiver 100 is improved.

In this embodiment, the trace length of the first inductor 12 may be designed according to actual radio frequency signal requirements, for example, the length of the first inductor 12 may be set based on the wavelength of the central operating frequency of the wireless transmission module 20. The trace length of the first inductor 12 may be set to be approximately equal to a quarter wavelength of a center frequency of a preset frequency band, where the preset frequency band is understood as an operating frequency band of the specific wireless transmission module 20. In some embodiments, the length of the first inductor 12 can be set to be less than or equal to a quarter wavelength of the center frequency point of the predetermined frequency band, so as to prevent the operating frequency band from being affected by the limitation of the first inductor 12 by the actual antenna attachment structure. Specifically, the relationship between the wavelength and the frequency is an inverse relationship, and the specific calculation formula is: wavelength (unit: m) 300/frequency (unit: MHz). When the center frequency of the signal is 150MHz, the wavelength is 2 m, the signal around 150MHz is also called 2 m wave, and the wavelength around 430MHz is 0.7 m, so the signal around 430MHz is also called 70 cm wave. In some embodiments, the wireless transmission module 20 may be a bluetooth transmission module, and the operating frequency band thereof is 2.45GHz, so that the total length of the first inductor 12 needs to be approximately one quarter of the operating wavelength, that is, the total length of the first inductor 12 is approximately 30 mm. In other embodiments, the length of the first inductor 12 may range from 18mm to 33mm, and the width may range from 1mm to 2.5 mm. In practical applications, the first inductor 12 within this size range has better radiation performance. Of course, in the implementation, the design may also be performed in combination with other factors such as the size of the electronic device or the wireless headset, and the specific use scenario.

In the embodiment of the present application, the trace shape of the first inductor 12 can be designed according to actual radio frequency signal requirements, the extending direction of the first inductor 12 is not limited, and the first inductor 12 forms a corresponding type of antenna after extending a corresponding length and being bent correspondingly. In this embodiment, the type may be set according to a specific application scenario, for example, a G-type antenna may be selected.

Referring to fig. 11, in some embodiments, the first sensor 12 includes a main body 123 and a trace portion 125 connected to the main body. The main body 123 is substantially in a long strip shape, the trace portion 125 is bent relative to the main body 123, and the trace portion 125 and the main body 123 can be arranged in parallel at intervals to ensure that the first inductor 12 has a sufficient length and occupies a small space. The common terminal is disposed at one end of the main body 123, so that the excitation current can be fed into the main body 123 and the trace portion 125 through the end portion of the main body 123.

In some embodiments, the number of the routing portions 125 may be two, and the two routing portions 125 may be connected to an end of the main body 123 away from the common end 121 and located on two opposite sides of the main body 123. As shown in fig. 12, the main body 123 may include a feeding portion 1231 and an extending portion 1233, the feeding portion 1231 and the extending portion 1233 are respectively located at two opposite ends of the main body 123, the common end 121 is disposed at the feeding portion 123, and both of the routing portions 125 are connected to the extending portion 1233. Further, the first inductor 12 may further include a connecting portion 127, the connecting portion 127 may be substantially in a shape of a bar, and the connecting portion 127 is connected to the extending portion 1233 of the main body 123 and is substantially perpendicular to the main body 123. The two wire traces 125 are respectively connected to two opposite ends of the connecting portion 127, each wire trace 125 is substantially in a shape of a long strip and extends from the connecting portion 127 toward the common end 121, so that the wire traces 125 are substantially parallel to the main body 123, thereby further ensuring that the first inductor 12 has a sufficient length and occupies a small space. By disposing the two wire traces 125 on two opposite sides of the main body 123, the first inductor 12 is substantially in an E-shaped dashed line structure, and when the excitation current is fed into the main body 123 through the common end 121, the excitation current shunts to the two wire traces 125 at the connecting portion 127, so that the radiation performance of the first inductor 12 is better.

In the present embodiment, the first inductor 12 is not provided with a grounding point, and the wireless transmission module 20 is configured to feed an excitation current to the first inductor 12 through the common terminal 121 so that the first inductor 12 acts as a radiator of a monopole antenna when the first inductor 12 radiates a radio frequency signal. In other embodiments, the first inductor 12 may have a grounding point, the grounding point is connected to the reference ground, and the matching circuit module 18 is used to adjust the impedance matching of the first inductor 12, so that the first inductor 12 operates in a desired frequency band.

In some embodiments of the present application, the first inductor 12 may be made of metal, for example, the first inductor 12 may be a copper sheet. In other embodiments, the first sensor 12 can be made by a laser forming process, for example, the trace pattern of the first sensor 12 can be formed on the substrate by a laser direct forming technique, so that the first sensor 12 can be adapted to various shapes of carriers or substrates, without limitation to the application scenario. The laser direct forming technology is a production technology of professional laser processing, injection and electroplating processes, and the principle of the technology is that a common plastic component/circuit board (namely a substrate) is endowed with the functions of electrical interconnection, component supporting, supporting and protection of a plastic shell and the like, and the functions of shielding, antenna and the like generated by combining a mechanical entity and a conductive pattern are combined into a whole. Further, the first inductor 12 may be formed on the surface of the substrate by laser etching copper plating. Compared with other modes, the laser etching efficiency is highest, and the laser etching device has the advantages of convenience in manufacturing, accurate position and the like.

Referring to fig. 13, in some embodiments, the second touch sensing module 30 includes a second sensor 32 and a second touch sensing module 34, the second sensor 32 and the first sensor 12 are disposed at an interval and electrically isolated from each other, the second sensor 32 is configured to detect a touch operation, and the second touch sensing module 34 is connected to the second sensor and configured to process an electrical signal corresponding to the touch operation sensed by the second sensor 32. In this embodiment, by providing the first inductor 12 and the second inductor 32 that are electrically isolated from each other, the second inductor 32 can also be used to detect touch operations, and the two are combined to form a touch panel for user operations, allowing a user to control an electronic device or a wireless headset by touching the first inductor 12 and the second inductor 32, thereby providing a larger touch area, improving convenience of user operations, providing a sufficient trigger space for various touch instructions, and reducing the difficulty of operation.

Further, in this embodiment, the signal transceiver device 100 may further include a main control chip 50, the wireless transmission module, the first touch sensing chip 14, and the second touch sensing chip 34 are all connected to the main control chip 50, and the main control chip 50 is configured to process signals of the first touch sensing chip 14 and the second touch sensing chip 34, so as to ensure that functions of receiving and transmitting radio frequency signals and receiving touch signals of the signal transceiver device 100 can be stably implemented.

In this embodiment, the second touch sensing module 34 may include a second touch sensing chip 341 and a second decoupling unit 343, and the second decoupling unit 343 is connected to the second sensor 32 and the second touch sensing chip 141, respectively. Further, the second decoupling unit 343 is connected between the second sensor 32 and the second touch sensing chip 141.

The second touch sensing chip 341 is configured to process an electrical signal generated based on a touch operation detected by the second sensor 32 to determine a corresponding touch control instruction. In some embodiments, the second sensor 32 may be an optical sensor or an acoustic sensor; for example, the second sensor 32 may include an acoustic wave sensor, which utilizes acoustic waves to transmit on the sensing surface, when an object touches the sensing surface, the object may block the transmission of the acoustic waves and cause a change in the electrical signal, so that the second touch sensing chip 341 can detect the change in the transmission of the acoustic waves (i.e., the change in the electrical signal), and thus can determine a corresponding touch control command; for another example, the second sensor 32 may include a light sensor, which transmits and receives light signals by using a light transmitter and a light receiver, when an object touches the sensing surface, the object may obstruct the transmission of light and cause a change of an electrical signal, so that the second touch sensing chip 341 can detect the change of light transmission and detect a touch position of the object, thereby determining a corresponding touch control command.

In the present embodiment, the second sensor 32 is a conductive body having a conductive property, for example, the second sensor 32 may include a metal sheet (such as a copper foil, a silver foil, a gold foil, etc.), and may further include a conductive film, and by providing the conductive second sensor 32, the second touch sensing module 30 is configured as a capacitive touch sensor, which is more sensitive to the touch of a human body and prevents other objects from being touched by mistake. In this embodiment, the second sensor 32 can sense the electrostatic charges of the human body and cause a change in the capacitance value when the human body approaches (e.g. touches), and the second touch sensing chip 341 determines a corresponding touch control command according to the capacitance value generated by the electrostatic charges of the human body and the touch characteristics to perform corresponding functions, wherein the touch characteristics include but are not limited to: touch duration, touch path, touch area, touch frequency, etc. Further, in some embodiments, the second touch sensing chip 341 can adjust the sensing sensitivity of the capacitance value generated by the human body electrostatic charge, so as to reduce the occurrence probability of the false trigger signal.

In this embodiment of the application, the second decoupling unit 343 may be configured to adjust an induction sensitivity of a capacitance value generated by the electrostatic charges of the human body, and may also be configured to filter signal noise of an electrical signal generated based on a touch operation detected by the second sensor 32, so that the second touch sensing module 34 has higher accuracy and sensitivity.

Referring to fig. 14, the second decoupling unit 343 may include a second resistor R2, a second inductor L2, and a second capacitor C1; the second touch sensing chip 341, the second resistor R1, the second inductor L2, and the second inductor 32 are sequentially connected in series, one end of the second capacitor C2 is connected to the common node of the second resistor R2 and the second inductor L2, and the other end is grounded. In order to obtain higher touch detection sensitivity, the resistance value of the second resistor R2 may range from 0.8K Ω to 1.2K Ω (e.g., may be 1K Ω), the inductance value of the second inductor L1 may range from 80nH to 120nH (e.g., may be 100nH), and the capacitance value of the second capacitor C2 may range from 18pf to 2pf (e.g., may be 22 pf).

In this embodiment, the second inductor 32 may have a substantially elongated shape, and may be disposed on one side of the feeding portion 1231 of the first inductor 12 and spaced apart from the feeding portion 1231. The length direction of the second inductor 32 and the length direction of the first inductor 12 may be the same, that is, the second inductor 32 and the first inductor 12 are arranged at intervals along the same direction to form a longer touch area, which can provide a larger touch area and improve the convenience of user operation. In some embodiments, second inductor 12 may be made of metal, for example, second inductor 32 may be a copper sheet. In other embodiments, the second inductor 32 may be formed by a laser forming process, for example, the second inductor 32 may be formed on a substrate by a laser direct forming technique, so that the second inductor 32 can be adapted to various shapes of carriers or substrates, without limitation to the application scenario. Further, the second inductor 32 may be formed on the surface of the substrate by laser etching copper plating.

Referring to fig. 15, in some embodiments, the shape and structure of the second inductor 32 may be substantially the same as those of the first inductor 12, and in some scenarios, when the material of the second inductor 32 includes metal, it may also be used as a radiator of the wireless transmission module 20. Specifically, for example, the signal transceiver 100 may further include a switch module 70, where the switch module 70 is connected to the first inductor 12 and the second inductor 32, and is used to selectively connect the first inductor 12 and the second inductor 32 to the wireless transmission module 20 according to actual requirements, so as to switch the first inductor 12 and the second inductor 32 to radiate radio frequency signals, thereby ensuring that the signal transmitter 100 has stable performance. Specifically, the switch module 70 is connected to the first sensor 12, the second sensor 32, the second touch sensor module 34 and the high pass filter circuit 17, and the switch module 70 is configured to electrically connect one of the first sensor 12 and the second sensor 32 with the high pass filter circuit 17 and electrically connect the other of the first sensor 12 and the second sensor 32 with the second touch sensor module 34. For example, the switch module 70 is configured to select one of the first sensor 12 and the second sensor 32 to be electrically connected to the high pass filter circuit 17, and select the other one to be electrically connected to the second touch sensing module 34, specifically, if the first sensor 12 is currently connected to the wireless transmission module 20 and used for radiating the radio frequency signal, when the signal intensity of the first sensor 12 is low due to being shielded, the main control chip 50 can select the second sensor 32 to be connected to the wireless transmission module 20 through the switch module 70, so as to improve the radiation efficiency of the signal transceiver 100.

In the embodiment shown in fig. 15, the switch module 70 may include a first switch K1 and a second switch K2, wherein a first moving terminal a of the first switch K1 is connected to the common node of the low-pass filter circuit 15 and the high-pass filter circuit 17, and a first stationary terminal b of the first switch K1 is connected to the first inductor 12; the second movable end c of the second switch K2 is connected to the second touch sensing module 34, and the second stationary end d of the second switch K1 is connected to the second sensor 32. The first movable end a of the first switch K1 is selectively connected to the first stationary end b or the second stationary end d to connect the first inductor 12 or the second inductor 32 to the wireless transmission module 20; the second movable end c of the second switch K2 is selectively connected to the first stationary end b or the second stationary end d to connect the first sensor 12 or the second sensor 32 to the second touch sensing module 34. The switch module 70 may be a mechanical switch or an electronic switch tube. The electronic switching tube can be a MOS tube, a transistor, or the like. In the embodiment of the present application, the specific components of the switch module 70 are not further limited, and it suffices to alternatively connect the first inductor 12 and the second inductor 32 to the wireless transmission module 20.

Further, in the embodiment, in order to detect the signal strength of the first inductor 12 and the second inductor 32 and select one of the first inductors with stronger signal to connect to the wireless transmission module 20, the main control chip 50 may be provided with a signal detection module (not shown in the figure), the signal detection module is electrically connected to the switch module 70, the first inductor 12 and the second inductor 32, and in the initial state, the first inductor 12 is connected to the wireless transmission module 20. When the signal detection module detects that the signal intensity of the first inductor 12 is lower than the preset value, the switch module 70 connects the second inductor 32 to the wireless transmission module 20 through the high-pass filter circuit 17, so that the second inductor 32 works as a signal radiator of the wireless transmission module 20, thereby preventing the radiation efficiency of the signal transceiver 100 from being reduced after the first inductor 12 is blocked, and making the transmission performance of the signal transceiver 100 more stable. The signal detection module can judge the signal intensity by detecting the performance index of the corresponding first inductor, and the performance index can include any one of the following parameter indexes: standing wave ratio, radiation efficiency, reflected power, return loss.

In the embodiment of the present application, the number of the second touch sensing modules 30 in the signal transceiver 100 is not limited, and in the above embodiment, one second touch sensing module 30 is taken as an example for description. It should be understood that in other embodiments, the second touch sensing module 30 may be two or more, and the second inductors 32 of the two or more second touch sensing modules 30 are electrically isolated from the first inductors 12 of the first touch sensing module 10, so as to avoid mutual interference between the touch sensing chip and the wireless transmission module 20. By providing a plurality of second touch sensing modules 30, a larger touch area can be provided for the signal transceiver 100, so as to prevent erroneous touch and improve the convenience of user touch. It should be understood that the terms "first" and "second" in this specification are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Specifically, as shown in fig. 2, the signal transceiver 100 may further include a third sensing module 90, a structure of the third sensing module 90 is substantially the same as that of the second sensing module 30, which may be regarded as another second sensing module 30, and may have the structure of the second sensing module 30 in any of the above embodiments, and for brevity, the description is not repeated herein. In the description herein, references to the description of "one embodiment," "some embodiments," or "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, a schematic representation of terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In this embodiment, the third touch sensing module 90 includes a third sensor 92 and a third touch sensing module 94, wherein the third sensor 92, the second sensor 32 and the first sensor 12 are sequentially disposed at intervals and electrically isolated from each other. The third sensor 92 is configured to detect a touch operation. The third touch sensing module 94 is connected to the third sensor 92 and configured to process an electrical signal corresponding to a touch operation sensed by the third sensor 92. The third touch sensing module 94 may include a third touch sensing chip 941 and a third decoupling unit 943, wherein the third decoupling unit 943 is connected to the third sensor 92 and the third touch sensing chip 141, respectively. Further, a third decoupling unit 943 may be connected between the third sensor body 92 and the third touch sensing chip 141. The third touch sensing chip 941 may be connected to the main control chip 50 and configured to process an electrical signal generated based on a touch operation detected by the third sensor 92 to determine a corresponding touch control instruction. The third decoupling unit 943 may be configured to adjust a sensing sensitivity of a capacitance value generated by the electrostatic charges of the human body, and also may be configured to filter signal noise of an electrical signal generated based on the touch operation detected by the third sensor 92, so that the third touch sensing module 94 has high accuracy and sensitivity.

In the signal transceiver provided in the foregoing embodiment of the present application, the first touch sensing module and the wireless transmission module are connected in parallel to a common end of the first inductor, where the first touch sensing module is configured to process an electrical signal corresponding to a touch operation induced by the first inductor, and the wireless transmission module is configured to feed an excitation current to the first inductor via the common end so that the first inductor radiates a radio frequency signal. Meanwhile, the high-pass filter circuit only allows high-frequency signals to pass, the low-pass filter circuit only allows low-frequency signals to pass, the frequency of signals transmitted by the wireless transmission module is usually in a high-frequency band, and the frequency of signals transmitted by the touch sensing module is usually in a low-frequency band, so that the high-frequency signals transmitted/received by the wireless transmission module cannot be transmitted into the first touch sensing module in the working process of the earphone; the low-frequency signals sent/received by the first touch sensing module cannot be transmitted into the wireless transmission module, namely, the low-frequency signals and the wireless transmission module do not interfere with each other and work independently. Therefore, the signal transceiver provided in the embodiment of the present application can realize common reception of the radio frequency signal and the touch signal, and the sensitivity of the touch sensing module and the matching sensitivity of the wireless transmission module do not interfere with each other, so that a higher sensitivity of the touch sensing module and a higher matching sensitivity of the wireless transmission module can be realized. Furthermore, the signal transceiver device is provided with a first inductor and a second inductor which are electrically isolated from each other, the second inductor can be used for detecting touch operation, the first inductor and the second inductor are combined to form a touch panel of the electronic equipment or the wireless earphone, and a user is allowed to control the electronic equipment or the wireless earphone by touching the first inductor and the second inductor, so that a larger touch area can be provided, the convenience of user operation is improved, enough trigger space is provided for various touch instructions, and the control difficulty is lower.

Referring to fig. 17, an electronic device 400 is further provided in the embodiments of the present application, where the electronic device 400 may be, but is not limited to, a mobile phone, a tablet computer, a palm computer, a wearable device (e.g., a smart watch, a smart bracelet, a pedometer, etc.), a wireless headset, or other communication devices capable of being provided with a signal transceiver. The electronic device 400 of the present embodiment is described by taking a wireless headset as an example. The wireless headset may be a headphone or an earbud headset, and the earbud headset is described as an example in this specification.

The electronic device 400 includes a housing 410, an electroacoustic module 430 disposed on the housing 410, and a signal transceiver 450. The housing 410 is used for accommodating the electroacoustic module 430 and forming a sound-emitting cavity of the electroacoustic module 430, and the electroacoustic module 430 may be an electronic device such as a speaker.

In this embodiment, the shell 410 may include an ear plug portion 411 adapted to fit the ear canal of the user and a stem portion 413 connected to the ear plug portion 411. The ear plug portion 411 is used for accommodating the electroacoustic module 430, and the ear stem portion 413 is used for accommodating other electronic components of the electronic device 400, such as a sensor, a circuit board, and the signal transceiver 450. The connection structure between the ear stem portion 413 and the ear plug portion 411 may be an integrally formed connection structure (e.g., the two may be injection-molded integral structures), so as to ensure the structural consistency of the casing 410 and avoid the assembly error from affecting the sound quality of the electronic device 400.

In the present embodiment, the signal transceiver 450 is disposed on the ear handle 413. The signal transceiver 450 may be any one of the signal transceiver 100 provided in the foregoing embodiments, or may have a combination of any one or more features of the signal transceiver 100, and the related features may refer to the foregoing embodiments, which are not described in detail in this embodiment. The signal transceiver 450 is integrated in the housing 410, for example, the signal transceiver 450 may be disposed in an inner space of the housing 410, or may be integrated on the housing 410, which is not limited in this specification. Similar to the signal transceiver 100, the signal transceiver 450 of the present embodiment may include a first touch sensing module 10, a second touch sensing module 30, and a third touch sensing module 90.

The first inductor 12 of the first touch sensing module 10, the second inductor 32 of the second touch sensing module 30, and the third inductor 92 of the third touch sensing module 90 are sequentially arranged at intervals on the ear portion 413. Further, the first sensor 12, the second sensor 32, and the third sensor 92 are arranged in order from one end of the ear portion 413 away from the ear plug portion 411 toward the ear plug portion 411 along the longitudinal direction of the ear portion 413. In this embodiment, the length dimension occupied by the first sensor 12 in the length direction of the ear portion 413 is about half of the length of the ear portion 413, and the length dimension occupied by the second sensor 32 and the third sensor 92 in the length direction of the ear portion 413 is about half of the length of the ear portion 413, so that the three first sensors can occupy most of the position in the length direction of the ear portion 413, and the touch panel area of the electronic device 400 can be ensured to be large, which is favorable for ensuring the sensitivity of touch sensing and the convenience of touch operation. The second sensor 32 and the third sensor 92 may have substantially the same structure and size, and at this time, the size of the first sensor 12 in the length direction of the ear portion 413 is twice the size of the second sensor 32 or the third sensor 92 in the length direction, so that the space inside the ear portion 413 can be effectively utilized, and the first sensor 12 is ensured to have a sufficiently long routing length.

In this embodiment, for convenience of description, it is defined that when the electronic device 00 is worn on a human ear, one side of the ear handle portion 413 facing the human ear is an inner side, and one side of the ear handle portion 413 facing away from the human ear is an outer side, and the first sensor 12, the second sensor 32, and the third sensor 92 may be disposed on an outer side portion of the ear handle portion 413, so as to facilitate a user touch operation and prevent other electronic elements or human body parts from blocking transmission of wireless signals. In some embodiments, the first inductor 12, the second inductor 32, and the third inductor 92 may each be a metal sheet that may be conformed to the inner surface of the ear portion 413. In other embodiments, the first inductor 12, the second inductor 32, and the third inductor 92 can also be formed on the inner surface of the ear portion 413 by laser direct forming (e.g., laser copper plating).

Referring to fig. 18, in some embodiments, in order to facilitate the formation and detection of the signal transceiver 450, the electronic device 400 may further include a support 470, where the support 470 is used to carry any one or more of the first inductor 12, the second inductor 32, and the third inductor 92. For example, when the first inductor 12, the second inductor 32 and the third inductor 92 are directly formed by laser, the three components may be directly formed on the surface of the bracket 470, and the bracket 470 is assembled to the ear portion 413, so that the surface of the bracket 470 is attached to the inner surface of the ear portion 413. In this embodiment, the inner surface of the ear portion 413 may be a curved surface, the outer surface of the bracket 470 may be a curved surface adapted to the inner surface of the ear portion 413, the first inductor 12, the second inductor 32 and the third inductor 92 are directly formed on the outer surface of the bracket 470 by a laser etching copper plating process, which can be adapted to the curved surface shape of the ear portion 413, the inner space of the ear portion 413 is effectively utilized, and the first inductor 12, the second inductor 32 and the third inductor 92 are firmly and reliably mounted.

In the electronic device provided in the above embodiment of the application, the first touch sensing module of the signal transceiver and the wireless transmission module are connected in parallel to the common end of the first inductor, wherein the first touch sensing module is configured to process an electrical signal corresponding to a touch operation induced by the first inductor, and the wireless transmission module is configured to feed an excitation current to the first inductor via the common end so that the first inductor radiates a radio frequency signal. Meanwhile, the high-pass filter circuit only allows high-frequency signals to pass, the low-pass filter circuit only allows low-frequency signals to pass, the frequency of signals transmitted by the wireless transmission module is usually in a high-frequency band, and the frequency of signals transmitted by the touch sensing module is usually in a low-frequency band, so that the high-frequency signals transmitted/received by the wireless transmission module cannot be transmitted into the first touch sensing module in the working process of the earphone; the low-frequency signals sent/received by the first touch sensing module cannot be transmitted into the wireless transmission module, namely, the low-frequency signals and the wireless transmission module do not interfere with each other and work independently. Therefore, the signal transceiver provided in the embodiment of the present application can realize common reception of the radio frequency signal and the touch signal, and the sensitivity of the touch sensing module and the matching sensitivity of the wireless transmission module do not interfere with each other, so that a higher sensitivity of the touch sensing module and a higher matching sensitivity of the wireless transmission module can be realized.

The electronic device provided in the above embodiments of the present application is described by taking a wireless headset as an example, and in other embodiments, the electronic device 400 may also be a wearable device such as a smart bracelet, a smart watch, or other miniaturized wearable devices such as an hearing aid, smart glasses, AR glasses, etc., which are adapted to be worn by a user, it can comprise a shell and any one of the signal transceiver devices, the signal transceiver device is arranged in the shell, by arranging the signal transceiver device in the shell of the electronic equipment, the multiplexing of the touch panel and the antenna radiator of the wearable device can be realized, the common reception of radio frequency signals and touch signals can be realized, and the sensitivity of the touch sensing module and the matching sensitivity of the wireless transmission module are not interfered with each other, so that higher sensitivity of the touch sensing module and higher matching sensitivity of the wireless transmission module can be realized.

Based on the electronic device and the signal transceiver, an embodiment of the present application further provides a wireless headset, which includes an electroacoustic module, a housing, and any one of the signal transceiver, where the signal transceiver is disposed in the housing, and the first inductor and the second inductor are attached to an inner surface of the housing. It should be understood that the signal transceiver provided in the embodiments of the present application may be applied to various electronic devices, such as wearable devices that can communicate, such as smart bracelets and smart watches, or other miniaturized wearable devices, such as hearing aids, smart glasses and AR glasses, and is not limited to the examples provided in this specification.

It should be noted that, in the present specification, when an element is referred to as being "disposed on" another element, it can be directly connected to the other element or intervening elements may be present (i.e., indirectly connected to the other element); when a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present, i.e., there may be an indirect connection between the two components.

In this specification, particular features or characteristics described may be combined in any one or more embodiments or examples as appropriate. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A signal transceiver, characterized in that it comprises a wireless transmission module, a first touch sensing module and a second touch sensing module;

The first touch sensing module includes a first sensing body, a first touch sensing module, a low-pass filter circuit and a high-pass filter circuit; the first sensing body is a conductor and is configured to detect a touch operation; the first A sensing body is provided with a common terminal, and the first touch sensing module is connected to the common terminal through the low-pass filter circuit, so as to be configured to process an electrical signal corresponding to a touch operation sensed by the first sensing body;

The wireless transmission module is connected to the common terminal through the high-pass filter circuit, so as to be configured to feed an excitation current to the first inductive body via the common terminal, so that the first inductive body radiates radio frequency signals ;

The second touch sensing module includes a second sensing body and a second touch sensing module; the second sensing body and the first sensing body are spaced apart and electrically isolated from each other; the second sensing body is configured to detect touch operation, the second touch sensing module is configured to process an electrical signal corresponding to the touch operation sensed by the second sensing body.

2 . The signal transceiver according to claim 1 , wherein the low-pass filter circuit comprises an inductor connected in series with the first touch sensing module; one end of the inductor is connected to the first touch sensing module. 3 . , the other end is connected to the common terminal; the high-pass filter circuit includes a first filter capacitor connected in series with the wireless transmission module, one end of the first filter capacitor is connected to the wireless transmission module, and the other end is connected to the wireless transmission module. the public side.

3 . The signal transceiver device according to claim 1 , wherein the wireless transmission module comprises a feed circuit and a second filter capacitor, and the second filter capacitor is respectively connected to the high-pass filter circuit and the feed circuit. 4 . circuit connection.

4. The signal transceiver according to claim 3, wherein the first end of the low-pass filter circuit is connected to the common end, and the first end of the high-pass filter circuit is connected to the common end, The second end of the low-pass filter circuit is connected with the second end of the high-pass filter circuit to form a connection end; one end of the second filter capacitor is connected to the connection end, and the other end is connected to the feed circuit.

5. The signal transceiver device according to claim 4, wherein the wireless transmission module further comprises a sub-matching unit for adjusting the excitation current, the sub-matching unit is respectively connected with the second filter capacitor, The feed circuit is connected.

6 . The signal transceiver according to claim 1 , wherein the wireless transmission module comprises a matching circuit module for adjusting the radio frequency signal, one end of the matching circuit module is grounded, and the other end is connected to the high-pass A common contact between the filter circuit and the common terminal.

7 . The signal transceiver device of claim 1 , wherein the first sensing module comprises a first touch sensing chip and a first decoupling unit, the first decoupling unit is respectively connected to the low-pass filter. 8 . The circuit and the first touch sensing chip are connected.

8 . The signal transceiver device of claim 7 , wherein the first decoupling unit comprises a first resistor, a first inductor and a first capacitor; the first touch sensing chip, the first resistor , the first inductor and the low-pass filter circuit are connected in series in sequence, one end of the first capacitor is connected to the common contact of the first resistor and the first inductor, and the other end is grounded.

9 . The signal transceiver device of claim 1 , wherein the second sensing body is a conductor, the second touch sensing module comprises a second touch sensing chip and a second decoupling unit, the first The two decoupling units are respectively connected to the second sensing body and the touch sensing chip.

10 . The signal transceiving device of claim 9 , wherein the signal transceiving device further comprises a third touch sensing module, and the third touch sensing module comprises a third sensing body and is connected to the first touch sensing module. 11 . A third touch sensing chip with three sensing bodies; the third sensing body, the second sensing body, and the first sensing body are arranged at intervals in sequence and electrically isolated from each other; the third sensing body is configured to sense touch signal.

11 . The signal transceiving device according to claim 10 , wherein the signal transceiving device further comprises a main control chip, the wireless transmission module, the first touch sensing chip, the second touch sensing chip and the The third touch sensing chips are all connected to the main control chip.

12 . The signal transceiving device according to claim 1 , wherein the signal transceiving device further comprises a switch module, and the switch module is connected to the first inductive body, the second inductive body, the The second touch sensing module and the high-pass filter circuit, the switch module is configured to electrically connect one of the first sensing body and the second sensing body to the high-pass filter circuit, and connect all the The other one of the first sensing body and the second sensing body is electrically connected to the second touch sensing module.

13 . The signal transceiver according to claim 1 , wherein the first inductive body comprises a main body and a wiring part connected to the main body, and the wiring part is opposite to the main body. 14 . the main body is bent; the common end is arranged at one end of the main body.

14 . The signal transceiver device according to claim 13 , wherein there are two wiring parts, the first inductive body further comprises a connecting part, and the connecting part is connected to the two wiring parts. 15 . In between, one end of the main body is connected to the connecting portion, and the two wiring portions are respectively located on opposite sides of the main body.

15 . The signal transceiver according to claim 13 , wherein the main body comprises a power feeding part and an extending part, the power feeding part and the extending part are respectively located at opposite ends of the main body, and the power feeding part and the extending part are respectively located at opposite ends of the main body. 16 . The extending portion is spaced apart from the second inductive body, the extension portion is farther from the second inductive body than the feeding portion, the common end is disposed on the feeding portion, and the wiring portion is connected to the extension.

16 . The signal transceiver device of claim 13 , wherein the wireless transmission module is configured to feed an excitation current to the first inductive body via the common terminal to make the first inductive body radiate. 17 . When a radio frequency signal is used, the first inductor acts as a radiator of the monopole antenna.

17. An electronic device, characterized by comprising a casing and the signal transceiving device according to any one of claims 1 to 16, wherein the signal transceiving device is arranged in the casing.

18. The electronic device according to claim 17, wherein the electronic device is an earphone, and the housing comprises an earplug part adapted to the user's ear canal and an ear handle part connected to the earplug part, so The signal transceiving device is arranged on the ear handle portion.

19 . The electronic device according to claim 8 , wherein the electronic device further comprises a bracket disposed in the ear handle, the first induction body and the second induction body are along the ear handle. 20 . The longitudinal directions of the parts are sequentially arranged in the brackets at intervals.

20. The electronic device according to claim 19, wherein the surface of the bracket is a curved surface, the surface of the bracket is in contact with the inner surface of the ear handle, and the first induction body is directly Formed on the surface of the bracket.

21. A wireless earphone, characterized in that it comprises an electro-acoustic module, a casing, and the signal transceiving device according to any one of claims 1 to 16, wherein the signal transceiving device is arranged in the casing, and the first An induction body and the second induction body are attached to the inner surface of the casing.

22. A wearable device, characterized in that, the wearable device is suitable for being worn by a user, and the wearable device comprises a housing and the signal transceiving device according to any one of claims 1 to 16, wherein the signal transceiving device is provided with In the casing, the first induction body and the second induction body are disposed in the casing.