CN207234768U - Blue-tooth device - Google Patents
Blue-tooth device Download PDFInfo
- Publication number
- CN207234768U CN207234768U CN201720946789.9U CN201720946789U CN207234768U CN 207234768 U CN207234768 U CN 207234768U CN 201720946789 U CN201720946789 U CN 201720946789U CN 207234768 U CN207234768 U CN 207234768U
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- circuit
- blue
- tooth device
- signal transmitting
- microwave
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Abstract
The utility model is related to a kind of blue-tooth device, including signal transmitting and receiving circuit, microwave amplifiercation circuit, on-off circuit and when signal transmitting and receiving circuit in a receive mode when control the bluetooth governor circuit that on-off circuit disconnects；Signal transmitting and receiving circuit is connected with microwave amplifiercation circuit, and microwave amplifiercation circuit is connected with bluetooth governor circuit, and on-off circuit is in parallel with microwave amplifiercation circuit.Above-mentioned blue-tooth device is when in a receive mode, bluetooth governor circuit controlling switch circuit disconnects, and microwave amplifiercation circuit enables, and signal transmitting and receiving circuit received signal is amplified by microwave amplifiercation circuit, the receiving sensitivity of blue-tooth device is thus improved, solves the problems, such as easily disconnecting occur.
Description
Technical field
Wireless communication technology field is the utility model is related to, more particularly to a kind of blue-tooth device.
Background technology
Bluetooth has very extensive application, instead of electronics as a kind of short-range data and voice wireless communication technique
The wired connection of data transfer in product, at present, blue tooth products emerge in an endless stream, and have good market prospects, such as bluetooth ear
Machine, user can exempt impeding for electric wire, offer convenience to user.
It is limited to Bluetooth technology and various losses, such as the loss of filter insertion loss, antenna match, antenna efficiency damage
Consumption, human body blocking to radio wave etc., traditional blue tooth products are not high there are receiving sensitivity, disconnecting easily occur
Problem.
Utility model content
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of blue-tooth device for improving receiving sensitivity.
A kind of blue-tooth device, including signal transmitting and receiving circuit, microwave amplifiercation circuit, on-off circuit and when signal transmitting and receiving circuit
The bluetooth governor circuit for controlling on-off circuit to disconnect when in a receive mode；
Signal transmitting and receiving circuit is connected with microwave amplifiercation circuit, and microwave amplifiercation circuit is connected with bluetooth governor circuit, switch electricity
Road is in parallel with microwave amplifiercation circuit.
Above-mentioned blue-tooth device, including signal transmitting and receiving circuit, microwave amplifiercation circuit, on-off circuit and when signal transmitting and receiving circuit
The bluetooth governor circuit for controlling on-off circuit to disconnect when in a receive mode；Signal transmitting and receiving circuit is connected with microwave amplifiercation circuit,
Microwave amplifiercation circuit is connected with bluetooth governor circuit, and on-off circuit is in parallel with microwave amplifiercation circuit, and such blue-tooth device is being located
When reception pattern, bluetooth governor circuit controlling switch circuit disconnects, and microwave amplifiercation circuit enables, what signal transmitting and receiving circuit received
Signal is amplified by microwave amplifiercation circuit, thus improves the receiving sensitivity of blue-tooth device, is solved and is easily connected
The problem of interruption.
Brief description of the drawings
Fig. 1 is the structure diagram of blue-tooth device in one embodiment；
Fig. 2 is the structure diagram of blue-tooth device in one embodiment；
Fig. 3 is the structure diagram of blue-tooth device in one embodiment.
Embodiment
As shown in Figure 1, a kind of blue-tooth device, including signal transmitting and receiving circuit 100, microwave amplifiercation circuit 200, on-off circuit
300 and when signal transmitting and receiving circuit 100 in a receive mode when control on-off circuit 300 disconnect bluetooth governor circuit 400；
Signal transmitting and receiving circuit 100 is connected with microwave amplifiercation circuit 200, microwave amplifiercation circuit 200 and bluetooth governor circuit 400
Connection, on-off circuit 300 are in parallel with microwave amplifiercation circuit 200.
Signal transmitting and receiving circuit 100 is used to receive or launch signal, for example during reception pattern, signal transmitting and receiving circuit 100 receives
From exterior signal, the signal received can be exterior blue-tooth device send Bluetooth connection request signal, connection control
Signal, data transfer signal etc..BlueTooth request signal can be specifically that the foundation that is used for that exterior blue-tooth device is sent communicates to connect
Signal, connection control signal can be specifically the control signal of exterior blue-tooth device, and data transfer signal can be specifically outer
The data message that portion's blue-tooth device is sent, such as the data message such as picture, music, document.Specifically, signal transmitting and receiving circuit can be with
It is antenna, antenna is a kind of converter, and the guided wave propagated on transmission line is transformed into the electromagnetism propagated in unbounded medium by it
Ripple, or carry out opposite conversion.Antenna is the component for being used for launching or receiving electromagnetic wave in wireless device, and radio leads to
The engineering systems such as letter, broadcast, TV, radar, navigation, electronic countermeasure, remote sensing, radio astronomy, it is every to use electromagnetic waves to transmit
Information, antenna is depended on to work.In addition, in terms of energy is transmitted with electromagnetic wave, the energy radiation of non-signal also needs
Antenna is wanted, general antenna all has invertibity, i.e., both can be used as transmitting antenna with common antenna, it is also possible to makees reception antenna, together
One antenna is identical as transmitting or the fundamental characteristics parameter received.
Microwave amplifiercation circuit 200 is used for the docking collection of letters number and is amplified, and specifically, microwave amplifiercation circuit 200 includes microwave
Low-noise amplifier, microwave low-noise amplifier can amplify the noise level for receiving signal, directly determine what can be received
Minimum-signal level.Microwave low-noise amplifier can include Microwave Low-Noise transistor and microstrip circuit, utilize scattering parameters
It is designed；It can also include sequentially connected first isolator, the first low noise amplifier, the second low noise amplifier, high pass filter
Ripple device, low-pass filter, the 3rd low noise amplifier, the 4th low noise amplifier and the second isolator.Wherein, the first isolator is
Input isolator, the second isolator for output isolator, have the advantages that Insertion Loss is small, standing-wave ratio is small, the first low noise amplifier with
Second low noise amplifier has the advantages that noise coefficient is small, bandwidth of operation is wide, stable working state, can so ensure ultralow
Noise coefficient and relatively low debugging difficulty；Low-pass filter can suppress harmonic wave, and high-pass filter can reduce low-frequency disturbance, carry
Higher harmonics suppresses and stability.
On-off circuit 300 is used for the control for receiving bluetooth governor circuit 400, so as to control the work of microwave amplifiercation circuit 200
Make state.Specifically, when the control signal that on-off circuit 300 receives bluetooth governor circuit 400 disconnects, microwave amplifiercation circuit
300 are in working condition；When on-off circuit 300 receives the control signal closure of bluetooth governor circuit 400, microwave amplifiercation circuit
300 do not access in circuit.Specifically, on-off circuit 300 can include controlled tr tube, and the control terminal of controlled tr tube receives indigo plant
The control signal that tooth governor circuit is sent, is in controlled tr tube and state is opened or closed.
Bluetooth governor circuit 400 is used for the state for obtaining blue-tooth device, and the state of blue-tooth device includes reception pattern and hair
Emission mode, when the state of blue-tooth device is reception pattern, 400 controlling switch circuit 300 of bluetooth governor circuit disconnects, and microwave is put
Big circuit 200 works normally；When the state of blue-tooth device is emission mode, 400 controlling switch circuit 300 of bluetooth governor circuit
Closure, microwave amplifiercation circuit are stopped.Specifically, bluetooth governor circuit 400 includes BC6130 Bluetooth control chips, BC6130
It is a super low-power consumption, inexpensive Bluetooth control chip, is integrated with the MCU of RF (Radio Frequency, radio frequency) transceiver module
(Microcontroller Unit, micro-control unit), based on ARM and DSP core, has programmable audio prompt, can use
User is instructed to be matched or customized audio the tinkle of bells in help.BC6130 Bluetooth controls chip includes audio interface, Bluetooth modulation
The modules such as demodulator, memory interface, Audio interface block include audio interface circuit, audio input circuit and audio output
Circuit, audio interface circuit include mono audio codecs and audio input and output, and audio input circuit includes logical
Microphone input, the microphone input in road can be configured to single-ended or fully differential, input with different microphone Optimized Simulated and
Digital programmable gain stage；Audio output circuit is by a single poor A-B classes output stage.Bluetooth modem includes RF ends
Mouth, RF receivers, RF transmitters and Bluetooth RF synthesizer.
Above-mentioned blue-tooth device, including signal transmitting and receiving circuit 100, microwave amplifiercation circuit 200, on-off circuit 300 and when letter
Number transmission circuit 100 in a receive mode when control the bluetooth governor circuit 400 that on-off circuit 300 disconnects；Signal transmitting and receiving circuit
100 are connected with microwave amplifiercation circuit 200, and microwave amplifiercation circuit 200 is connected with bluetooth governor circuit 400, on-off circuit 300 with it is micro-
Ripple amplifying circuit 200 is in parallel, and such blue-tooth device is when in a receive mode, 400 controlling switch circuit of bluetooth governor circuit
300 disconnect, and microwave amplifiercation circuit 200 enables, and 100 received signal of signal transmitting and receiving circuit is carried out by microwave amplifiercation circuit 200
Amplification, thus the receiving sensitivity of blue-tooth device is improved, solve the problems, such as disconnecting easily occur, and by switching electricity
Microwave amplifiercation circuit 200 is optionally opened on road 300 when in a receive mode, can effectively reduce the power consumption of blue-tooth device.
In one embodiment, as shown in Fig. 2, blue-tooth device further includes match circuit 500, signal transmitting and receiving circuit 100 is logical
Overmatching circuit 500 is connected with microwave amplifiercation circuit 200, wherein, match circuit 500 includes the inductance and capacitance of series connection.Matching
It is the proper noun in terms of the study of radio, refers to the angle from impedance, i.e., electric current passes through the resistance that is run into when conductor or medium
The size of power, if electric current passes through two media, if impedance operator between them is identical, the loss of electric current is minimum, loses
It is very also minimum.Radio in propagation either emission process if the transmitting electrical characteristic of transmitter or retransmission unit each other
Between be mutually matched, the loss and distortion of such radio signal transmission are minimum, so consistent with radio-frequency apparatus electrical characteristic
Network be referred to as RF matching networks, can be that electronic system can also be room atmosphere system because air also have it is certain
Electrical characteristic, such as impedance, capacitive reactance etc..
In one embodiment, blue-tooth device further includes filter circuit, and signal transmitting and receiving circuit passes through filter circuit and microwave
Amplifying circuit connects, and filter circuit can ensure sound quality with filtering clutter.Filter circuit can be divided into high-pass filtering circuit,
Four class of low-pass filter circuit, rejector circuit and bandwidth-limited circuit, high-pass filtering circuit refer to the high frequency division in signal
Amount allows by Frequency and DC component always；Low-pass filter circuit refers to DC component and low frequency point in signal
Amount allows by suppressing higher frequency component；Rejector circuit refers to suppress the signal in certain frequency range, it is allowed to the frequency range model
Signal beyond enclosing passes through；Bandwidth-limited circuit refers to that the signal in some frequency range allows by the way that suppression is less than and higher than this
The signal of frequency range.In another embodiment, blue-tooth device further includes coupled capacitor, signal transmitting and receiving circuit by coupled capacitor with
Microwave amplifiercation circuit connects, and coupled capacitor can ensure that forceful electric power and light current two systems are coupled and isolated, there is provided high-frequency signal leads to
Road, prevents low-frequency current from entering weak electricity system, ensures personal safety.
In one embodiment, as shown in figure 3, blue-tooth device include sequentially connected antenna, coupled capacitor, wave filter,
Matching network, switch, microwave amplifier and Bluetooth control chip, antenna are received from exterior signal, such as data transfer
Signal, coupled capacitance, which is docked after received signal carries out coupling isolation processing, enters matching network so that the transmission damage of signal
Consumption and distortion are minimum.Since in a receive mode, Bluetooth control chip controls switch off blue-tooth device, microwave amplifier at this time
Work, the matched circuit of signal enter microwave amplifier afterwards, improve the receiving sensitivity of signal.And when blue-tooth device is in
During emission mode, Bluetooth control chip controls switch closure, microwave amplifier is stopped, the directly matched network of signal, filter
Ripple device and antenna are launched.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the utility model, its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of blue-tooth device, it is characterised in that including signal transmitting and receiving circuit, microwave amplifiercation circuit, on-off circuit and work as institute
The bluetooth governor circuit for controlling the on-off circuit to disconnect when stating signal transmitting and receiving circuit in a receive mode；
The signal transmitting and receiving circuit is connected with the microwave amplifiercation circuit, the microwave amplifiercation circuit and the bluetooth governor circuit
Connection, the on-off circuit are in parallel with the microwave amplifiercation circuit.
2. blue-tooth device according to claim 1, it is characterised in that the bluetooth governor circuit includes BC6130 bluetooth controls
Coremaking piece.
3. blue-tooth device according to claim 1, it is characterised in that the microwave amplifiercation circuit is put including Microwave Low-Noise
Big device.
4. blue-tooth device according to claim 1, it is characterised in that the on-off circuit includes switching tube.
5. blue-tooth device according to claim 1, it is characterised in that the signal transmitting and receiving circuit includes antenna.
6. blue-tooth device according to claim 1, it is characterised in that further include match circuit, the signal transmitting and receiving circuit
It is connected by the match circuit with the microwave amplifiercation circuit.
7. blue-tooth device according to claim 6, it is characterised in that the match circuit includes the inductance and electricity of series connection
Hold.
8. blue-tooth device according to claim 1, it is characterised in that further include filter circuit, the signal transmitting and receiving circuit
It is connected by the filter circuit with the microwave amplifiercation circuit.
9. blue-tooth device according to claim 1, it is characterised in that further include coupled capacitor, the signal transmitting and receiving circuit
It is connected by the coupled capacitor with the microwave amplifiercation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720946789.9U CN207234768U (en) | 2017-07-31 | 2017-07-31 | Blue-tooth device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720946789.9U CN207234768U (en) | 2017-07-31 | 2017-07-31 | Blue-tooth device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207234768U true CN207234768U (en) | 2018-04-13 |
Family
ID=61855330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720946789.9U Active CN207234768U (en) | 2017-07-31 | 2017-07-31 | Blue-tooth device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207234768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167155A (en) * | 2018-09-11 | 2019-01-08 | 深圳市思讯通信技术有限公司 | A kind of earphone built-in antenna mould group and earphone |
-
2017
- 2017-07-31 CN CN201720946789.9U patent/CN207234768U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167155A (en) * | 2018-09-11 | 2019-01-08 | 深圳市思讯通信技术有限公司 | A kind of earphone built-in antenna mould group and earphone |
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