CN218124895U - Earphone double-antenna circuit and earphone - Google Patents
Earphone double-antenna circuit and earphone Download PDFInfo
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- CN218124895U CN218124895U CN202221563414.1U CN202221563414U CN218124895U CN 218124895 U CN218124895 U CN 218124895U CN 202221563414 U CN202221563414 U CN 202221563414U CN 218124895 U CN218124895 U CN 218124895U
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- 238000004891 communication Methods 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 9
- 230000000295 complement effect Effects 0.000 claims description 4
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- 230000008054 signal transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
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Abstract
The utility model provides an earphone double-antenna circuit and an earphone, wherein the earphone double-antenna circuit comprises a first antenna, a second antenna and a switching circuit, and the switching circuit is respectively and electrically connected with the first antenna and the second antenna; the switching circuit is electrically connected with the main control circuit in the earphone and used for outputting the signal received by the first antenna or the signal received by the second antenna to the main control circuit. The earphone double antenna circuit that this scheme provided adopts two antenna circuit structure, and two antennas are each responsible for, and the hardware that realizes two antennas through radio frequency chip switches, and it is high to switch work efficiency, and switching speed is fast and data loss volume is few. The earphone is internally provided with the earphone double-antenna circuit, so that the problem of poor RF signals of the earphone can be effectively relieved, and data loss in the signal transmission process can be reduced.
Description
Technical Field
The utility model relates to an earphone field particularly, relates to an earphone double antenna circuit and earphone.
Background
With the rise of intelligent bluetooth headset products, bluetooth headsets have become electronic products frequently used in daily life. The great enhancement of the functions and the smaller and smaller product size mean that the requirements of the earphone on the stability of the RF signals are higher and higher. RF signals, i.e. radio frequency signals.
As a wearable electronic product, the earphone can operate in various external environments, is easily interfered by the outside, influences signal receiving, causes the blockage and disconnection of earphone signals, and seriously influences the normal use of the earphone.
In the prior art, a common TWS (True Wireless Stereo) bluetooth headset is generally a single antenna. The single antenna can lead the Bluetooth connection performance of the earphone to be poor, so that the earphone receiving signal is poor, and the use of the earphone is influenced.
SUMMERY OF THE UTILITY MODEL
Based on the problem that prior art exists, the utility model provides a two antenna circuit of earphone and earphone. The specific technical scheme is as follows:
a dual-antenna circuit of an earphone comprises a first antenna, a second antenna and a switching circuit, wherein the switching circuit is electrically connected with the first antenna and the second antenna respectively;
the switching circuit is electrically connected with a main control circuit in the earphone and used for outputting the signal received by the first antenna or the signal received by the second antenna to the main control circuit.
In a particular embodiment, the direction of the first antenna and the direction of the second antenna are arranged to be complementary.
In a specific embodiment, one of the first antenna and the second antenna is used for realizing communication between earphones, and the other of the first antenna and the second antenna is used for realizing communication between the earphones and a preset signal output end.
In a specific embodiment, one of the first antenna and the second antenna serves as a main antenna, and the other of the first antenna and the second antenna serves as an auxiliary antenna for assisting in receiving signals;
the switching circuit is used for outputting the signals received by the main antenna to the main control circuit.
In a specific embodiment, the first antenna and the second antenna are arranged in a central symmetry.
In a particular embodiment, the first antenna includes a first circuit structure and a first antenna structure;
the first circuit structure comprises a first capacitor and a first inductor;
one end of the first inductor is electrically connected with the switching circuit, and the other end of the first inductor is electrically connected with the first antenna structure;
the first capacitor is connected in parallel between the first inductor and the first antenna, and the first capacitor is grounded.
In a particular embodiment, the second antenna includes a second circuit structure and a second antenna structure;
the second circuit structure comprises a second capacitor and a second inductor;
one end of the second inductor is electrically connected with the switching circuit, and the other end of the second inductor is electrically connected with the second antenna structure;
the second capacitor is connected in parallel between the second inductor and the second antenna, and the second capacitor is grounded.
In a specific embodiment, the switching circuit is provided with a radio frequency chip, and the radio frequency chip is electrically connected to the first inductor and the second inductor respectively.
An earphone comprises a main control circuit and the earphone dual-antenna circuit;
the master control circuit is electrically connected with the switching circuit in the earphone double-antenna circuit and is used for acquiring signals received by the earphone double-antenna circuit.
In a particular embodiment, the headset is a TWS Bluetooth headset.
The utility model discloses following beneficial effect has:
the utility model provides an earphone double antenna circuit and earphone. The earphone double-antenna circuit adopts a double-antenna circuit structure, so that the signal receiving quality is ensured, and the compatibility of the antenna can be improved. The two antennas are responsible for respective responsibility and work cooperatively, one antenna is responsible for realizing the communication between the insides of the earphones, and the other antenna is responsible for realizing the communication between the earphones and the signal transmitting end. When one antenna fails, the other antenna can work instead of the antenna, and the stability and safety of signal receiving are ensured. The hardware switching of the antenna is realized through the radio frequency chip, the switching working efficiency is high, the switching speed is high, the data loss is small, and the switching effect is far superior to that of software switching. The earphone is internally provided with the earphone double-antenna circuit, so that the problem of poor RF signals of the earphone can be effectively relieved, and the data loss in the signal transmission process can be reduced.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic block diagram of a dual antenna circuit of an earphone according to the present invention;
fig. 2 is a schematic diagram of a dual antenna distribution according to the present invention;
fig. 3 is a schematic circuit diagram of a first antenna according to the present invention;
fig. 4 is a schematic circuit diagram of a second antenna proposed by the present invention;
fig. 5 is a schematic circuit diagram of a switching circuit according to the present invention.
Reference numerals: 1-a first antenna; 2-a second antenna; 3-a switching circuit; 4-a master control circuit; 11-a first antenna structure; 12-a first circuit configuration; 21-a second antenna structure; 22-second circuit configuration.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
To overcome the defects in the prior art, the present embodiment provides a dual-antenna circuit for an earphone, which uses a radio frequency chip to switch dual antennas, so as to receive the optimal signal of the antenna. The connection relation of each component is shown as the attached figure 1 in the specification, and the specific scheme is as follows:
a dual-antenna circuit of an earphone is suitable for the earphone. The earphone dual-antenna circuit comprises a first antenna 1, a second antenna 2 and a switching circuit 3, wherein the switching circuit 3 is electrically connected with the first antenna 1 and the second antenna 2 respectively. The switching circuit 3 is electrically connected to a main control circuit 4 in the earphone, and is configured to output a signal received by the first antenna 1 or a signal received by the second antenna 2 to the main control circuit 4.
One of the first antenna 1 and the second antenna 2 serves as a main antenna, and the other serves as an auxiliary antenna. The main antenna is used as a main antenna for receiving signals, and the signals received by the main antenna are transmitted to the main control circuit 4 of the earphone through the switching circuit 3. The switching circuit 3 adopts a radio frequency chip, and selects one antenna as a main antenna and the other antenna as an auxiliary antenna according to the quality condition of signals received by the first antenna 1 and the second antenna 2. The switching circuit 3 is used for outputting signals received by the main antenna to the main control circuit 4 so as to ensure that the optimal antenna can be used as the main antenna in different environments, so that the earphone main control circuit 4 can receive signals with the best quality, and the stability of receiving signals by the earphone is ensured.
The second antenna 2 and the first antenna 1 may have the same or different structures, and may be selected according to practical applications. For example, the second antenna 2 has the same structure as the first antenna 1. Preferably, the direction of the first antenna 1 and the direction of the second antenna 2 are arranged to be complementary, so that the signal of the headset can be received in all directions. Further preferably, the first antenna 1 and the second antenna 2 are arranged centrosymmetrically. The structure and the position relation of the first antenna 1 and the second antenna 2 are shown in the specification and the attached figure 2. In the attached drawing 2 of the specification, the first antenna 1 and the second antenna 2 both include a circuit structure and an antenna structure, the circuit structure is electrically connected to the antenna structure, the first antenna 1 and the second antenna 2 are L-shaped, so that the first antenna structure 11 and the second antenna structure 21 are symmetrical about a center of a symmetry point, the first circuit structure 12 and the second circuit structure 22 are symmetrical about a center of a symmetry point, and the space occupied by the antennas is reduced as much as possible through reasonable layout. Furthermore, the first antenna 1 and the second antenna 2 are not necessarily perfectly complementary in direction, and there may be some angular deviation. In practical applications, the first antenna 1 and the second antenna 2 may be reasonably arranged according to specific structures. For example, the first antenna 1 and the second antenna 2 are both elongated, and the first antenna 1 and the second antenna 2 may be arranged axisymmetrically.
Preferably, one of the first antenna 1 and the second antenna 2 is used for enabling communication between the earphones, and the other of the first antenna 1 and the second antenna 2 is used for enabling communication between the earphones and the preset signal output terminal. The two antennas are responsible for each other, so that the quality of receiving signals by the earphone is guaranteed, and the compatibility of the earphone is improved. When one of the first antenna 1 and the second antenna 2 is damaged, the other one of the first antenna 1 and the second antenna 2 can replace the damaged antenna to continue working, and normal receiving of signals inside the earphone is guaranteed.
Preferably, the resonant frequency bands of the first antenna 1 and the second antenna 2 comprise bluetooth frequency bands, suitable for bluetooth headsets.
Description fig. 3 provides a schematic circuit structure diagram of the first antenna 1, and description fig. 4 provides a schematic structure diagram of the second antenna 2. Illustratively, the first antenna 1 includes a first circuit structure 12 and a first antenna structure 11; the first circuit structure 12 includes a first capacitor and a first inductor; one end of the first inductor is electrically connected with the switching circuit 3, and the other end of the first inductor is electrically connected with the first antenna structure 11; a first capacitor is connected in parallel between the first inductor and the first antenna 1, and the first capacitor is grounded. Exemplarily, the second antenna 2 includes a second circuit structure 22 and a second antenna structure 21; the second circuit structure 22 includes a second capacitance and a second inductance; one end of the second inductor is electrically connected with the switching circuit 3, and the other end of the second inductor is electrically connected with the second antenna structure 21; a second capacitor is connected in parallel between the second inductor and the second antenna 2, and the second capacitor is grounded. The double-antenna structure can work independently, and the normal work of the other antenna cannot be influenced by the fault of one antenna. And can the collaborative work between first antenna 1 and the second antenna 2, can effectively alleviate antenna work burden, promote the earphone to the interference killing feature of external signal, effectively alleviate the poor problem of bluetooth signal.
Preferably, a radio frequency chip is disposed in the switching circuit 3, and the radio frequency chip is electrically connected to the first inductor and the second inductor, respectively. Description figure 5 provides a schematic circuit diagram of a switching circuit 3. In fig. 5, the switching circuit 3 is configured with a radio frequency chip U1, and an RF1 end of the radio frequency chip U1 is electrically connected to a first inductor in the first antenna 1, and an RF2 end is electrically connected to a second inductor in the second antenna 2. The antenna switching is realized by adopting a special radio frequency chip, the stability and the reliability are better, and software switching logic is not needed. Compared with software switching, the hardware switching work efficiency is higher, the hardware switching work efficiency is more stable and faster, and the control capability of the antenna is stronger. The faster the switching speed, the less the amount of data lost by the transmission chain, and therefore, the earphone dual-antenna circuit of the embodiment can greatly reduce the data loss in the RF antenna transmission process.
The embodiment provides a dual-antenna circuit of an earphone, which is suitable for receiving signals inside the earphone. By adopting the double-antenna circuit structure, the signal receiving quality is ensured, and the compatibility of the antenna can be improved. The two antennas are responsible for respective responsibility and work cooperatively, one antenna is responsible for realizing the communication between the insides of the earphones, and the other antenna is responsible for realizing the communication between the earphones and the signal transmitting end. When one antenna fails, the other antenna can work instead of the antenna, and the stability and safety of signal receiving are ensured. The hardware switching of the antenna is realized through the radio frequency chip, the switching working efficiency is high, the switching speed is high, the data loss is small, and the switching effect is far superior to that of software switching.
Example 2
The present embodiment provides an earphone, in which the earphone dual-antenna circuit of embodiment 1 is configured. The specific scheme is as follows:
an earphone comprises a power circuit, a main control circuit 4 and an earphone double-antenna circuit of embodiment 1. The main control circuit 4 is electrically connected to the switching circuit 3 in the earphone dual-antenna circuit, and is used for acquiring signals received by the earphone dual-antenna circuit. The antenna signal with better signal quality is selected by the switching circuit 3 and output to the main control circuit 4. The power supply circuit is responsible for supplying power for each circuit module in the earphone.
The man-machine of this embodiment adopts the earphone dual antenna circuit of embodiment 1, can effectively alleviate the poor problem of earphone RF signal to can reduce the data loss in the signal transmission process. Preferably, the headset is a TWS bluetooth headset. A TWS (True Wireless Stereo) Bluetooth headset realizes the Wireless separated use of left and right sound channels of Bluetooth based on a TWS technology.
The embodiment provides an earphone, and the earphone dual-antenna circuit of the embodiment 1 is applied to a specific earphone, so that the problem of poor RF signals of the earphone can be effectively alleviated, and the anti-interference capability of the earphone is improved.
The utility model provides an earphone double antenna circuit and earphone. The earphone double-antenna circuit adopts a double-antenna circuit structure, so that the signal receiving quality is ensured, and the compatibility of the antenna can be improved. The two antennas are responsible for respective responsibility and work cooperatively, one antenna is responsible for realizing the communication between the insides of the earphones, and the other antenna is responsible for realizing the communication between the earphones and the signal transmitting end. When one antenna fails, the other antenna can work instead of the antenna, and the stability and safety of signal receiving are ensured. The hardware switching of the antenna is realized through the radio frequency chip, the switching working efficiency is high, the switching speed is high, the data loss is small, and the switching effect is far superior to that of software switching. The earphone is internally provided with the earphone double-antenna circuit, so that the problem of poor RF signals of the earphone can be effectively relieved, and the data loss in the signal transmission process can be reduced.
Those skilled in the art will appreciate that the circuitry in the devices in the implementation scenarios may be distributed in the devices in the implementation scenarios as described in the implementation scenarios, or may be located in one or more devices different from the present implementation scenarios with corresponding changes. The circuit of the above implementation scenario may be combined into one circuit, or may be further split into multiple sub-circuits.
The sequence numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the implementation scenario. The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.
Claims (10)
1. A dual-antenna circuit of an earphone is characterized by comprising a first antenna, a second antenna and a switching circuit, wherein the switching circuit is electrically connected with the first antenna and the second antenna respectively;
the switching circuit is electrically connected with a main control circuit in the earphone and used for outputting the signal received by the first antenna or the signal received by the second antenna to the main control circuit.
2. A headset dual antenna circuit according to claim 1, wherein the direction of the first antenna and the direction of the second antenna are arranged to be complementary.
3. The dual antenna circuit of claim 1, wherein one of the first and second antennas is used to enable communication between headsets and the other of the first and second antennas is used to enable communication between headsets and a predetermined signal output.
4. The dual antenna circuit of claim 1, wherein one of the first antenna and the second antenna serves as a main antenna and the other of the first antenna and the second antenna serves as an auxiliary antenna for assisting in receiving signals;
the switching circuit is used for outputting the signals received by the main antenna to the main control circuit.
5. The dual antenna circuit of claim 2, wherein the first antenna and the second antenna are arranged in a central symmetry.
6. The headset dual-antenna circuit of claim 1, wherein the first antenna comprises a first circuit structure and a first antenna structure;
the first circuit structure comprises a first capacitor and a first inductor;
one end of the first inductor is electrically connected with the switching circuit, and the other end of the first inductor is electrically connected with the first antenna structure;
the first capacitor is connected between the first inductor and the first antenna in parallel, and the first capacitor is grounded.
7. The headset dual antenna circuit of claim 6, wherein the second antenna comprises a second circuit structure and a second antenna structure;
the second circuit structure comprises a second capacitor and a second inductor;
one end of the second inductor is electrically connected with the switching circuit, and the other end of the second inductor is electrically connected with the second antenna structure;
the second capacitor is connected in parallel between the second inductor and the second antenna, and the second capacitor is grounded.
8. The earphone dual-antenna circuit of claim 7, wherein the switching circuit is provided with a radio frequency chip, and the radio frequency chip is electrically connected to the first inductor and the second inductor respectively.
9. An earphone, comprising a master control circuit and the earphone dual-antenna circuit of any one of claims 1-8;
the master control circuit is electrically connected with the switching circuit in the earphone double-antenna circuit and is used for acquiring signals received by the earphone double-antenna circuit.
10. The headset of claim 9, wherein the headset is a TWS bluetooth headset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221563414.1U CN218124895U (en) | 2022-06-21 | 2022-06-21 | Earphone double-antenna circuit and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221563414.1U CN218124895U (en) | 2022-06-21 | 2022-06-21 | Earphone double-antenna circuit and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218124895U true CN218124895U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221563414.1U Active CN218124895U (en) | 2022-06-21 | 2022-06-21 | Earphone double-antenna circuit and earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218124895U (en) |
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2022
- 2022-06-21 CN CN202221563414.1U patent/CN218124895U/en active Active
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