CN204465524U - A kind of wireless transmission circuit based on surface acoustic wave - Google Patents
A kind of wireless transmission circuit based on surface acoustic wave Download PDFInfo
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- CN204465524U CN204465524U CN201520127051.0U CN201520127051U CN204465524U CN 204465524 U CN204465524 U CN 204465524U CN 201520127051 U CN201520127051 U CN 201520127051U CN 204465524 U CN204465524 U CN 204465524U
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- circuit
- acoustic wave
- surface acoustic
- electric capacity
- wireless transmission
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- 238000010897 surface acoustic wave method Methods 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 title claims abstract description 35
- 230000002463 transducing effect Effects 0.000 claims abstract description 27
- 239000013078 crystal Substances 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 241000216843 Ursus arctos horribilis Species 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
Abstract
The utility model relates to a kind of wireless transmission circuit based on surface acoustic wave, and described circuit comprises the signal transmitting and receiving circuit, signal resolution circuit, data processing circuit and the signal transducing circuit that connect successively; Described signal transducing circuit is connected with described signal transmitting and receiving circuit.This circuit realiration, based on the wireless transmission circuit of surface acoustic wave, stably to send needing the signals security of transmission.
Description
Technical field:
The utility model relates to a kind of wireless transmission circuit, specifically relates to a kind of wireless transmission circuit based on surface acoustic wave.
Background technology:
Surface acoustic wave techniques is an emerge science technical field of just growing up gradually the 1970s and 1980s in 20th century, and it is the frontier branch of science that acoustics and electronics combine.Surface acoustic wave is a kind of elastic wave propagated along body surface.Owing to there is piezoelectricity on the crystal with piezoelectricity, between electroacoustic, there is coupling.Piezoelectric crystal itself is transducing medium, can make electroacoustic transduction circuit, electric energy and acoustic energy are changed mutually at the piezoelectric crystal surface propagating surface acoustic wave.
The operation principle of surface acoustic wave is utilized to mainly contain two kinds at present:
The first utilizes the transducing circuit of substrate left end, by inverse piezoelectric effect, the wireless of input is transformed into acoustical signal, this acoustical signal is positioned at one of substrate right-hand member or several periodicity grizzly bar along substrate surface propagation and is reflected, and acoustical signal is finally transformed into wireless answering signal by same transducing circuit by piezoelectric effect and exports by reflected signal.When the signal of substrate changes, cause the change of the transmission speed of surface acoustic wave and the spacing of reflection electric circuit, thus cause the phase place (time delay) of wireless answering to change.
The second, after the wireless signal of input is transformed into acoustical signal by inverse piezoelectric effect by the on-chip transducing circuit of piezoelectric crystal, is reflected to form resonance by two, left and right periodicity grizzly bar.The resonance frequency of this resonant circuit is relevant with the signal of substrate, and the change of resonance frequency is the curve of resonance frequency with signal intensity of actual measurement in very linear relation with the change of signal in certain range of signal.After acoustical signal is transformed into the output of wireless answering signal by piezoelectric effect by same transducing circuit, we just can obtain signal data by measuring frequency change, therefore surface acoustic wave signal circuit part is pure passive circuit part.
Utility model content:
The purpose of this utility model is to provide a kind of wireless transmission circuit based on surface acoustic wave, and this circuit realiration, based on the wireless transmission circuit of surface acoustic wave, stably sends needing the signals security of transmission.
For achieving the above object, the utility model by the following technical solutions: a kind of wireless transmission circuit based on surface acoustic wave, described circuit comprises the signal transmitting and receiving circuit, signal resolution circuit, data processing circuit and the signal transducing circuit that connect successively; Described signal transducing circuit is connected with described signal transmitting and receiving circuit.
A kind of wireless transmission circuit based on surface acoustic wave that the utility model provides, described signal transmitting and receiving circuit comprises electric capacity Ct, electric capacity Cg and the electric capacity Cw of series connection, between described electric capacity Ct and electric capacity Cg and between described electric capacity Cg and electric capacity Cw, be respectively equipped with inductance L t parallel with one another and inductance L w.
A kind of wireless transmission circuit based on surface acoustic wave that the utility model provides, described signal transducing circuit comprises transducer capacitance in parallel, transducing insulation resistance, wired earth electric capacity, enlarge leadingly input resistance and enlarge leadingly input capacitance.
Another preferred a kind of wireless transmission circuit based on surface acoustic wave that the utility model provides, described data processing circuit comprises power module and data processing module.
The preferred a kind of wireless transmission circuit based on surface acoustic wave again that the utility model provides, described signal resolution circuit comprises two electric capacity in parallel, and the positive interpolar of the electric capacity of described parallel connection is provided with the resistance of series connection, electric capacity Cm and inductance.
Another preferably a kind of wireless transmission circuit based on surface acoustic wave that the utility model provides, described power module comprises the voltage stabilizing didoe of series connection in parallel, rectifying pressurizer and inductance; Described rectifying pressurizer comprises rectifier and pressurizer.
Another preferably a kind of wireless transmission circuit based on surface acoustic wave that the utility model provides, described data processing module is comprised IGBT, the crystal oscillator be connected with described IGBT emitter, the modulator be connected with described crystal oscillator by described IGBT grid and is connected with demodulator by described IBGT collector electrode; Described crystal oscillator is connected with described demodulator.
Another preferably a kind of wireless transmission circuit based on surface acoustic wave that the utility model provides, series capacitor between described crystal oscillator and IGBT emitter.
Another preferably a kind of wireless transmission circuit based on surface acoustic wave that the utility model provides, described demodulator and IGBT inter-collector series resistance and diode.
With immediate prior art ratio, the utility model provides technical scheme to have following excellent effect:
1, circuit realiration of the present utility model is based on the wireless transmission circuit of surface acoustic wave, stably sends needing the signals security of transmission;
2, the utility model is simple and easy to realize;
3, the utility model is that the transmission of surface acoustic wave is laid a good foundation.
Accompanying drawing explanation
Fig. 1 is the utility model circuit diagram;
Fig. 2 is signal resolution circuit diagram of the present utility model;
Fig. 3 is signal transducing circuit diagram of the present utility model;
Fig. 4 is signal transmitting and receiving circuit diagram of the present utility model;
Fig. 5 is data processing circuit schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, utility model is described in further detail.
Embodiment 1:
As Figure 1-5, the utility model of this example is based on the wireless transmission circuit of surface acoustic wave, and as shown in Figure 1, described circuit comprises the signal transmitting and receiving circuit, signal resolution circuit, data processing circuit and the signal transducing circuit that connect successively; Described signal transducing circuit is connected with described signal transmitting and receiving circuit.Described signal transmitting and receiving circuit receives acoustic signals, the signal content carried secretly in sound wave is resolved by signal resolution circuit, then the signal transacting that signal coupling circuit will send becomes discernible wireless signal form to signal transducing circuit, then the acoustic signals being become can transmit by signal transducing circuit conversion is gone out by signal transmitting and receiving circuit wireless transmission.
As shown in Figure 2, described signal resolution circuit comprises two electric capacity in parallel, and the positive interpolar of the electric capacity of described parallel connection is provided with the resistance of series connection, electric capacity Cm and inductance.The high-frequency signal data Vw that described signal resolution circuit receives signal transmitting and receiving circuit carries out signal resolution process output Vc to data processing circuit.
As shown in Figure 3, described signal transducing circuit comprises transducer capacitance in parallel, transducing insulation resistance, wired earth electric capacity, enlarge leadingly input resistance and enlarge leadingly input capacitance.Described signal transducing circuit receives data processing circuit data Vin, stores data in transducing electric capacity, is connected with transducing insulation resistance, wired earth electric capacity, enlarge leadingly input resistance, enlarge leadingly input capacitance output Vout.
As shown in Figure 4, described signal transmitting and receiving circuit comprises electric capacity Ct, electric capacity Cg and the electric capacity Cw of series connection, between described electric capacity Ct and electric capacity Cg and between described electric capacity Cg and electric capacity Cw, be respectively equipped with inductance L t parallel with one another and inductance L w.The wireless transceiver circuit module of described signal transmitting and receiving circuit receives the Vout data of signal transducing circuit, is that carrier sends data with surface acoustic wave; It is carrier data that described signal transmitting and receiving circuit receives surface acoustic wave, is transferred to signal resolution circuit, carries out high-frequency signal dissection process.
As shown in Figure 5, described data processing circuit comprises power module and data processing module.
Described power module comprises the voltage stabilizing didoe of series connection in parallel, rectifying pressurizer and inductance; Described rectifying pressurizer comprises rectifier and pressurizer.
Described data processing module is comprised IGBT, the crystal oscillator be connected with described IGBT emitter, the modulator be connected with described crystal oscillator by described IGBT grid and is connected with demodulator by described IBGT collector electrode; Described crystal oscillator is connected with described demodulator.Series capacitor between described crystal oscillator and IGBT emitter.Described demodulator and IGBT inter-collector series resistance and diode.
Transmission data Vin is transferred to signal transducing circuit by the data processing core in described data processing circuit; The data Vc of the signal resolution circuit received carries out analysis judgment processing to it.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; although those of ordinary skill in the field should manage with reference to above-described embodiment and still can modify to embodiment of the present utility model or equivalent replacement; these do not depart from any amendment of the utility model spirit and scope or equivalent replacement, are all applying within the claims of the present utility model awaited the reply.
Claims (9)
1. based on a wireless transmission circuit for surface acoustic wave, it is characterized in that: described circuit comprises the signal transmitting and receiving circuit, signal resolution circuit, data processing circuit and the signal transducing circuit that connect successively; Described signal transducing circuit is connected with described signal transmitting and receiving circuit.
2. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 1, it is characterized in that: described signal transmitting and receiving circuit comprises electric capacity Ct, electric capacity Cg and the electric capacity Cw of series connection, between described electric capacity Ct and electric capacity Cg and between described electric capacity Cg and electric capacity Cw, be respectively equipped with inductance L t parallel with one another and inductance L w.
3. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 1, is characterized in that: described signal transducing circuit comprises transducer capacitance in parallel, transducing insulation resistance, wired earth electric capacity, enlarge leadingly input resistance and enlarge leadingly input capacitance.
4. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 1, is characterized in that: described data processing circuit comprises power module and data processing module.
5. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 1, it is characterized in that: described signal resolution circuit comprises two electric capacity in parallel, the positive interpolar of the electric capacity of described parallel connection is provided with the resistance of series connection, electric capacity Cm and inductance.
6. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 4, is characterized in that: described power module comprises the voltage stabilizing didoe of series connection in parallel, rectifying pressurizer and inductance; Described rectifying pressurizer comprises rectifier and pressurizer.
7. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 4, is characterized in that: described data processing module is comprised IGBT, the crystal oscillator be connected with described IGBT emitter, the modulator be connected with described crystal oscillator by described IGBT grid and is connected with demodulator by described IBGT collector electrode; Described crystal oscillator is connected with described demodulator.
8. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 7, is characterized in that: series capacitor between described crystal oscillator and IGBT emitter.
9. a kind of wireless transmission circuit based on surface acoustic wave as claimed in claim 7, is characterized in that: described demodulator and IGBT inter-collector series resistance and diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520127051.0U CN204465524U (en) | 2015-03-05 | 2015-03-05 | A kind of wireless transmission circuit based on surface acoustic wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520127051.0U CN204465524U (en) | 2015-03-05 | 2015-03-05 | A kind of wireless transmission circuit based on surface acoustic wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204465524U true CN204465524U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520127051.0U Expired - Fee Related CN204465524U (en) | 2015-03-05 | 2015-03-05 | A kind of wireless transmission circuit based on surface acoustic wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204465524U (en) |
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2015
- 2015-03-05 CN CN201520127051.0U patent/CN204465524U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150708 |