CN205566584U - Be applied to bluetooth headset's antenna circuitry and bluetooth headset thereof - Google Patents
Be applied to bluetooth headset's antenna circuitry and bluetooth headset thereof Download PDFInfo
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- CN205566584U CN205566584U CN201620271363.3U CN201620271363U CN205566584U CN 205566584 U CN205566584 U CN 205566584U CN 201620271363 U CN201620271363 U CN 201620271363U CN 205566584 U CN205566584 U CN 205566584U
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- bluetooth
- antenna
- circuit
- wire
- loudspeaker
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- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 abstract description 7
- 239000000919 ceramic Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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Abstract
The utility model relates to a bluetooth headset technical field, concretely relates to be applied to bluetooth headset's antenna circuitry and bluetooth headset thereof, the utility model discloses a: and a housing, be equipped with the bluetooth chip in the shell, the antenna feed circuit has been connect on the radio frequency pin of bluetooth chip, the antenna feed circuit is used for transmitting bluetooth radiofrequency signal, be connected with the loudspeaker wire between the audio frequency pin of bluetooth chip and the loudspeaker on the bluetooth headset, antenna feed circuit polyphone is in on the loudspeaker wire, make the loudspeaker wire as bluetooth antenna, bluetooth antenna with be equipped with the reverse circuit of blocking between the audio frequency pin, reverse block the circuit be used for to bluetooth antenna with bluetooth radiofrequency signal between the audio frequency pin blocks, bluetooth antenna sets up outside the shell, the utility model discloses on receiving the audio frequency wire with antenna circuitry, it has broken through the restriction of shell space to the antenna size, influenced the shielding of signal by metal casing, and is respond well.
Description
Technical field
This utility model relates to electronic switching technology field, is specifically related to a kind of antenna circuit being applied to bluetooth earphone and the bluetooth earphone of a kind of this antenna circuit of application。
Background technology
Along with the progress of science and technology, the utilization rate of bluetooth earphone is more and more higher, and the antenna circuit of existing bluetooth earphone, mainly there is two types: Yi Zhongshi PCB Plate printed antenna；Another kind is ceramic antenna；Along with the luxury aspect of bluetooth earphone outward appearance and the requirement of miniaturization are improved constantly by market, more and more bluetooth earphones have employed metal shell, or the shell of bluetooth earphone is also made more and more less.In this case, use traditional PCB Printed antenna cannot be accomplished enough sizes in narrow space and not reach enough ground clearances, thus signal transmission distance is restricted；On the other hand the earphone of metal shell is shielded absorption because of signal, also cannot effectively transmit signal.In like manner for ceramic antenna, although size can be accomplished the least, but need also exist for sufficiently wide clearance and cannot penetrating metal shell, and cost is the highest.Therefore, for the earphone of miniaturization shell or metal shell, existing antenna circuit is all extremely difficult to the effective propagation path of Bluetooth specification requirement。
Summary of the invention
For overcoming drawbacks described above, the purpose of this utility model is i.e. to provide a kind of antenna circuit being applied to bluetooth earphone and the bluetooth earphone of a kind of this antenna circuit of application.
The purpose of this utility model is achieved through the following technical solutions:
This utility model is a kind of antenna circuit being applied to bluetooth earphone, it is arranged on bluetooth earphone, including: shell, it is provided with Bluetooth chip in described shell, it is connected to antenna feeding circuit on the radio frequency pin of described Bluetooth chip, described antenna feeding circuit is for being transmitted Bluetooth RF signal, it is connected between audio frequency pin and the loudspeaker on bluetooth earphone of described Bluetooth chip and has loudspeaker wire, described antenna feeding circuit is connected in parallel on described loudspeaker wire, make loudspeaker wire as Bluetooth antenna, it is provided with between described Bluetooth antenna and described audio frequency pin and inversely blocks circuit, described reverse blocking-up circuit is for blocking the Bluetooth RF signal between Bluetooth antenna and described audio frequency pin, described Bluetooth antenna is arranged at outside shell.
Further, described loudspeaker wire includes: the first horn wire and the second horn wire, and described antenna feeding circuit is connected with described first horn wire, is coupled with the form of distribution capacity between described first horn wire and the second horn wire.
Further, the energization pins of described Bluetooth chip is connected with outside power supply, is provided with power lead between described energization pins and power supply.
Further, described Bluetooth antenna also includes: power lead, and the quantity of described power lead is that between two, and every power lead and the first horn wire, all forms with distribution capacity are coupled.
Further, described antenna feeding circuit includes: radiofrequency signal circuit, and described radiofrequency signal circuit is connected between the first horn wire and radio frequency pin, is in series with the first electric capacity and is parallel with the first inductance in described radiofrequency signal circuit.
Further, described reverse blocking-up circuit includes more than one second inductance, and every loudspeaker wire or power lead all connect with second inductance.
A kind of bluetooth earphone of the present utility model, including: loudspeaker and antenna circuit as above, the loudspeaker wire in described antenna circuit is connected with described loudspeaker.
Further, this utility model also includes: power supply, and described power supply is connected with the power lead in described antenna circuit.
Further, described power supply is battery.
Antenna circuit is received on audio wire by this utility model, utilize the original audio wire of earphone to realize the transmission-receiving function of antenna, can normal transmission audio signal to loudspeaker, Bluetooth RF signal can be radiated again simultaneously, and both are independent of each other.Outside antenna circuit is drawn out to shell, thus breach the outer casing space restriction to antenna size, the most no longer by the metal shell screening effect to signal.
Accompanying drawing explanation
For ease of explanation, this utility model is described in detail by following preferred embodiment and accompanying drawing.
Figure
1
Circuit theory diagrams for antenna circuit of the present utility model；
Figure
2
Electrical block diagram for bluetooth earphone of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further described.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Refer to figure
1
To figure
2
, this utility model is a kind of antenna circuit being applied to bluetooth earphone, and it is arranged on bluetooth earphone, including: shell, it is provided with Bluetooth chip in described shell
01
, described Bluetooth chip
01
Radio frequency pin on be connected to antenna feeding circuit
10
, described antenna feeding circuit
10
For Bluetooth RF signal is transmitted, described Bluetooth chip
01
Audio frequency pin and bluetooth earphone on loudspeaker
40
Between connect have loudspeaker wire, described antenna feeding circuit
10
It is connected in parallel on described loudspeaker wire, makes loudspeaker wire as Bluetooth antenna
30
, described Bluetooth antenna
30
And it is provided with between described audio frequency pin and inversely blocks circuit
20
, described reverse blocking-up circuit
20
For to Bluetooth antenna
30
And the Bluetooth RF signal between described audio frequency pin blocks, described Bluetooth antenna
30
It is arranged at outside shell.
And it is traditional
2.4GHZ
Bluetooth earphone
The important step of the impedance matching debugging always bluetooth earphone development of antenna, every a shell is required for carrying out antenna match debugging targetedly, it spends the substantial amounts of debugging time, and need to be equipped with expensive Network Analyzer just can complete, the design efficiency making bluetooth earphone product reduces, and technical threshold improves.And this utility model is due to its Bluetooth antenna
30
It is arranged at outside shell so that it is save the tedious work of debugging Antenna Impedance Matching, accelerates the research and development speed of bluetooth earphone.
This utility model can accomplish long enough due to antenna length, substantially increases the radiation efficiency of antenna, communicates reliable and stable, and transmission range easily reaches design requirement；And antenna is in outside shell, so to metal shell and the bluetooth earphone of minimum shell, it is easy to reach the most remote communication distance；Furthermore that eliminate the debugging efforts of Antenna Impedance Matching, greatly reduce Customer design and produce the technical threshold of bluetooth earphone；Be exactly also earphone antenna longer and exposed aloft, so when actually used, Bluetooth signal is changed to be affected by human posture and is far smaller than
PCB
Printed antenna and ceramic antenna.
Further, described loudspeaker wire includes: the first horn wire
31
With the second horn wire
32
, described antenna feeding circuit
10
With described first horn wire
31
It is connected, described first horn wire
31
With the second horn wire
32
Between be coupled with the form of distribution capacity.
Further, described Bluetooth chip
01
Energization pins and outside power supply
41
It is connected, described energization pins and power supply
41
Between be provided with power lead.
Further, described Bluetooth antenna
30
Also including: power lead, the quantity of described power lead is two, and every power lead and the first horn wire
31
Between be all coupled with the form of distribution capacity.The Bluetooth RF signal launched is from the first electric capacity
11
Feedback
Enter to the first horn wire
31
, it is coupled to the second horn wire by distribution capacity simultaneously
32
, or the first battery lead
33
With the second battery lead
34
；The Bluetooth RF signal received is the first horn wire
31
The Bluetooth RF signal received, adds by the second horn wire
32
, or the first battery lead
33
With the second battery lead
34
, the Bluetooth RF signal that these three wires receive is coupled to the first horn wire by distribution capacity
31
Part, the most together from the first electric capacity
11
It is fed into Bluetooth chip
01
。
Further, described antenna feeding circuit
10
Including: radiofrequency signal circuit, described radiofrequency signal circuit is connected to the first horn wire
31
And between radio frequency pin, described radiofrequency signal circuit is in series with the first electric capacity and is parallel with the first inductance
12
.The Bluetooth RF signal launched is through the first electric capacity
11
Flow to Bluetooth antenna
30
, and receiving Bluetooth RF signal is from Bluetooth antenna
30
Through the first electric capacity
11
Flow to Bluetooth chip
01
, the first electric capacity
11
Effect be realize
2.4GHZ
Bluetooth RF
Signal input, the feed of output.First inductance
12
For Bluetooth chip
01
Provide the least low-frequency impedance at radio frequency pin and between ground, be possible to prevent low-frequency interference signal or electrostatic to stay into Bluetooth chip
01
Internal.
Further, described reverse blocking-up circuit
20
Including more than one second inductance, it is respectively the second inductance
21
With the second inductance
22
, and the second inductance
23
With the second inductance
24
；And every loudspeaker wire or power lead all connect with second inductance.The effect of these four the second inductance is to block
2.4GHZ
Bluetooth RF
Signal is from Bluetooth antenna
30
Respective wire on be reversely flowed into Bluetooth chip
01
Or ground, it is to avoid the loss of signal and chip is interfered.
A kind of bluetooth earphone of the present utility model, including: loudspeaker
40
And as above antenna circuit, the loudspeaker wire in described antenna circuit and described loudspeaker
40
It is connected.
Further, this utility model also includes: power supply
41
, described power supply
41
It is connected with the power lead in described antenna circuit.
Further, described power supply
41
For battery.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model。
Claims (9)
1. the antenna circuit being applied to bluetooth earphone, it is arranged on bluetooth earphone, it is characterized in that, including: shell, it is provided with Bluetooth chip in described shell, it is connected to antenna feeding circuit on the radio frequency pin of described Bluetooth chip, described antenna feeding circuit is for being transmitted Bluetooth RF signal, it is connected between audio frequency pin and the loudspeaker on bluetooth earphone of described Bluetooth chip and has loudspeaker wire, described antenna feeding circuit is connected in parallel on described loudspeaker wire, make loudspeaker wire as Bluetooth antenna, it is provided with between described Bluetooth antenna and described audio frequency pin and inversely blocks circuit, described reverse blocking-up circuit is for blocking the Bluetooth RF signal between Bluetooth antenna and described audio frequency pin, described Bluetooth antenna is arranged at outside shell.
The antenna circuit being applied to bluetooth earphone the most according to claim 1, it is characterized in that, described loudspeaker wire includes: the first horn wire and the second horn wire, described antenna feeding circuit is connected with described first horn wire, is coupled with the form of distribution capacity between described first horn wire and the second horn wire.
The antenna circuit being applied to bluetooth earphone the most according to claim 2, it is characterised in that the energization pins of described Bluetooth chip is connected with outside power supply, is provided with power lead between described energization pins and power supply.
The antenna circuit being applied to bluetooth earphone the most according to claim 3, it is characterized in that, described Bluetooth antenna also includes: power lead, and the quantity of described power lead is that between two, and every power lead and the first horn wire, all forms with distribution capacity are coupled.
The antenna circuit being applied to bluetooth earphone the most according to claim 4, it is characterized in that, described antenna feeding circuit includes: radiofrequency signal circuit, described radiofrequency signal circuit is connected between the first horn wire and radio frequency pin, is in series with the first electric capacity and is parallel with the first inductance in described radiofrequency signal circuit.
The antenna circuit being applied to bluetooth earphone the most according to claim 5, it is characterised in that described reverse blocking-up circuit includes more than one second inductance, and every loudspeaker wire or power lead all connect with second inductance.
7. a bluetooth earphone, it is characterised in that including: loudspeaker and the antenna circuit as described in any one of claim 1 to 6, the loudspeaker wire in described antenna circuit is connected with described loudspeaker.
Bluetooth earphone the most according to claim 7, it is characterised in that also include: power supply, described power supply is connected with the power lead in described antenna circuit.
Bluetooth earphone the most according to claim 8, it is characterised in that described power supply is battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620271363.3U CN205566584U (en) | 2016-04-01 | 2016-04-01 | Be applied to bluetooth headset's antenna circuitry and bluetooth headset thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620271363.3U CN205566584U (en) | 2016-04-01 | 2016-04-01 | Be applied to bluetooth headset's antenna circuitry and bluetooth headset thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205566584U true CN205566584U (en) | 2016-09-07 |
Family
ID=56813551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620271363.3U Expired - Fee Related CN205566584U (en) | 2016-04-01 | 2016-04-01 | Be applied to bluetooth headset's antenna circuitry and bluetooth headset thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205566584U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018058945A1 (en) * | 2016-09-27 | 2018-04-05 | 深圳市安特信技术有限公司 | Antenna for in-ear bluetooth headset |
| CN107889003A (en) * | 2016-09-30 | 2018-04-06 | 深圳市三诺声智联股份有限公司 | A kind of wireless headset |
| CN110444964A (en) * | 2019-09-02 | 2019-11-12 | 浙江超级电气科技有限公司 | A kind of wireless control integrated electric motor cable plug |
-
2016
- 2016-04-01 CN CN201620271363.3U patent/CN205566584U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018058945A1 (en) * | 2016-09-27 | 2018-04-05 | 深圳市安特信技术有限公司 | Antenna for in-ear bluetooth headset |
| CN107889003A (en) * | 2016-09-30 | 2018-04-06 | 深圳市三诺声智联股份有限公司 | A kind of wireless headset |
| CN107889003B (en) * | 2016-09-30 | 2024-04-02 | 深圳市三诺声智联股份有限公司 | Wireless earphone |
| CN110444964A (en) * | 2019-09-02 | 2019-11-12 | 浙江超级电气科技有限公司 | A kind of wireless control integrated electric motor cable plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180424 Address after: 518000 Guangdong, Shenzhen, Baoan District Xixiang Street nine Wai community first song science and Technology Industrial Park two Patentee after: Shenzhen Hongbo Weiye Technology Co., Ltd. Address before: 518000 Shenzhen, Baoan District, Xixiang, Guangdong, Xixiang Road, Tian Tian Road Industrial Park, Ding Jun Shan cultural and technological creativity Park B 408 Patentee before: Shenzhen Hongsheng Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20190401 |