CN101997557B - Superregenerative receiving device and method - Google Patents
Superregenerative receiving device and method Download PDFInfo
- Publication number
- CN101997557B CN101997557B CN 200910194577 CN200910194577A CN101997557B CN 101997557 B CN101997557 B CN 101997557B CN 200910194577 CN200910194577 CN 200910194577 CN 200910194577 A CN200910194577 A CN 200910194577A CN 101997557 B CN101997557 B CN 101997557B
- Authority
- CN
- China
- Prior art keywords
- signal
- oscillator
- amplitude
- output
- receives
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000010355 oscillation Effects 0.000 claims abstract description 88
- 238000007493 shaping process Methods 0.000 claims abstract description 60
- 230000003534 oscillatory effect Effects 0.000 claims description 41
- 238000011069 regeneration method Methods 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 27
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000010897 surface acoustic wave method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000003321 amplification Effects 0.000 description 8
- 238000003199 nucleic acid amplification method Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Images
Landscapes
- Electric Clocks (AREA)
Abstract
The invention provides a superregenerative receiving device. An extinguishing controller of the device respectively outputs square wave signals to an oscillator and a time width-amplitude converter. The oscillator starts oscillation and carries out extinguishing according to the received square wave signals and outputs an oscillation signal with natural frequency during oscillation. If the frequency of the external signal received via an antenna is the same as the oscillation frequency of the oscillator, the non-oscillating time is shortened. The time width-amplitude converter converts the non-oscillating time of the oscillator into a sawtooth amplitude signal according to the received square wave signals and the oscillation signal output by the oscillator and outputs the sawtooth amplitude signal to a peak detector. The peak detector detects the peak of the amplitude of the received sawtooth amplitude signal and outputs the high/low level indicating the sawtooth amplitude to a shaping circuit. The shaping circuit shapes and filters the received high/low level and outputs the demodulated digital signal. The invention provides a superregenerative receiving method. The device and the method can improve the data transmission speed.
Description
Technical field
The present invention relates to the communications field, particularly a kind of ultra-regeneration receiving device and method.
Background technology
In the communications field, ultra-regeneration receiving device is mainly used in low-power consumption, and short distance is in the wireless data transmission of low speed.Transmitter passes through its antenna with certain transmit frequency digital signal, the high-frequency carrier signal of being modulated by digital signal that the antenna in the ultra-regeneration receiving device receives.The frequency of oscillation of the oscillator of ultra-regeneration receiving device is identical with the carrier of transmitter frequency; When the frequency of the external input signal that receives when oscillator is identical with frequency of oscillation; Oscillator shortens the starting of oscillation time; The wave detector of ultra-regeneration receiving device carries out envelope detection to the oscillator signal of oscillator output; After low pass filter filtering, export digital signal again, this digital signal is the digital signal of the transmitter transmission of ultra-regeneration receiving device decoding acquisition.
Fig. 1 is the sketch map of existing ultra-regeneration receiving device.As shown in Figure 1, existing ultra-regeneration receiving device comprises antenna 100, isolated amplifier 101, oscillator 102, clock generator 103, current controller 104, wave detector 105, low pass filter 106 and comparator 107.The operation principle of existing ultra-regeneration receiving device is: the external signal that ultra-regeneration receiving device receives is by the high frequency carrier of digital signal modulation; Clock signal to the current controller 104 of clock generator 103 output fixed frequencies, 102 opening and closing of current controller 104 control generators; Isolated amplifier 101 receives external input signal through antenna 100, and isolated amplifier 101 carries out the external signal that receives to export oscillator 102 to after noise isolation is amplified; When receiving the external signal identical with frequency of oscillation, oscillator 102 can accelerate starting of oscillation, outputting oscillation signal to wave detector 105; The detection result of wave detector 105 outputs inputs to comparator 107 after low pass filter 106 filtering; 107 pairs of filtered of comparator are carried out level and are just compared, the output digital signal.When oscillator 102 receives the frequency external signal identical with frequency of oscillation; The starting of oscillation time when starting of oscillation time ratio of oscillator 102 receives frequency and frequency of oscillation different external signal shortens; High level in the signal after the oscillator signal detection of oscillator 102 outputs broadens; DC level behind the LPF is also just higher, and the amplitude of the signal behind comparator 107 more above-mentioned two kinds of situation LPFs obtains the digital signal that transmitter transmits.
In the existing ultra-regeneration receiving device; The time width that is actually the oscillator signal that oscillator 102 under the frequency of the time width of the oscillator signal of oscillator 102 outputs under the frequency of external signal and the frequency of oscillation equal state and external signal and the frequency of oscillation state inequality is exported compares; Particularly; The signal that the oscillator signal of different time width under above-mentioned two kinds of situation is obtained after detection and filtering carries out amplitude relatively, to obtain the digital signal of the relative length of express time width.When the time width difference of oscillator signal under the frequency of the time width of oscillator signal under the frequency of external signal and the frequency of oscillation equal state and external signal and the frequency of oscillation state inequality was not obvious, the low pass filter of depending merely in the existing ultra-regeneration receiving device 106 can't effectively be decoded to external input signal in limited cycle with comparator 107.Adopt existing ultra-regeneration receiving device that the external signal that receives is decoded, receive a stable data and generally need contain 20 above cycles, this has just caused the data transmission bauds of receiving system lower.
Summary of the invention
In view of this, the invention provides a kind of ultra-regeneration receiving device, this device can improve data transmission bauds.
The present invention also provides a kind of superregenrative reception method, and this method can improve data transmission bauds.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of ultra-regeneration receiving device, this device comprises: antenna, extinguish controller, oscillator, the time wide-amplitude converter, peak detector and shaping circuit;
Said extinguish controller export respectively square-wave signal to oscillator and the time wide-amplitude converter;
Said oscillator is according to the square-wave signal vibration that receives, and the oscillator signal of output natural frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time;
Wide when said-amplitude converter is according to the square-wave signal that receives and the oscillator signal of oscillator, converts non-oscillatory time of oscillator into the sawtooth amplitude signal and exports peak detector to;
Said peak detector carries out peak detection to the amplitude of the sawtooth amplitude signal that receives, and the high-low level of output expression sawtooth waveforms amplitude is to shaping circuit;
Said shaping circuit carries out shaping filter and exports the digital signal that demodulates the high-low level that receives.
Preferably, said oscillator and further comprise envelope detector between wide-amplitude converter when said;
Said envelope detector carries out envelope detection to the amplitude of the oscillator signal of said oscillator output, the envelope signal of output expression oscillator signal amplitude to the time wide-amplitude converter;
Wide when said-amplitude converter is according to the envelope signal of the square-wave signal that receives and envelope detector output, converts non-oscillatory time of oscillator into the sawtooth amplitude signal and exports peak detector to.
In the said apparatus, said oscillator comprises according to the square-wave signal vibration that receives: said oscillator receives the rising edge starting of oscillation of square-wave signal, and the trailing edge that receives square-wave signal extinguishes, the oscillator signal of output natural frequency during vibration;
Wide when said-amplitude converter when to convert the sawtooth amplitude signal into be said with non-oscillatory time of oscillator wide-amplitude converter receive output sawtooth amplitude signal behind the trailing edge of square-wave signal, receive output low level behind the envelope signal of expression oscillator signal.
In the said apparatus, said oscillator is a surface acoustic wave SAW oscillator.
In the said apparatus, said shaping circuit is inverter or negative circuit.
A kind of superregenrative reception method, this method comprises;
Oscillator is according to the square-wave signal vibration of extinguishing controller output, and the oscillator signal of output natural frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time;
The time wide-amplitude converter according to the square-wave signal that extinguishes controller output and the oscillator signal of oscillator, convert non-oscillatory time of oscillator into the sawtooth amplitude signal and export peak detector to;
Peak detector amplitude is to the received signal carried out peak detection, and the high-low level of output expression sawtooth amplitude signal amplitude is to shaping circuit;
Shaping circuit to the high-low level shaping filter that receives after the digital signal that demodulates of output.
Preferably, this method further comprises:
Envelope detector carries out envelope detection to the oscillator signal of oscillator output, the envelope signal of output expression oscillator signal amplitude to the time wide-amplitude converter;
The time wide-amplitude converter according to the envelope signal of the square-wave signal that receives and envelope detector output, convert non-oscillatory time of oscillator into the sawtooth amplitude signal and export peak detector to.
In the said method; Said oscillator comprises according to the square-wave signal vibration of extinguishing controller output: oscillator extinguishes according to the trailing edge of the square-wave signal that extinguishes controller output that receives; According to the rising edge starting of oscillation of the square-wave signal that extinguishes controller output that receives, the oscillator signal of output natural frequency during vibration.
In the said method, wide when said-amplitude converter converts non-oscillatory time of oscillator into the sawtooth amplitude signal and comprises:
The time wide-amplitude converter square-wave signal that extinguishes controller output of receiving trailing edge output sawtooth amplitude signal, receive output low level behind the envelope signal of expression oscillator signal.
In the said method, said shaping circuit is also exported the digital signal that demodulates to the high-low level shaping filter that receives and is comprised:
Shaping circuit carries out inversion operation to the high-low level that receives, and the signal of the acquisition after the negate is exported as the digital signal that demodulates.
Visible by above-mentioned technical scheme, the invention provides a kind of ultra-regeneration receiving device, this device comprises: antenna, extinguish controller, oscillator, the time wide-amplitude converter, peak detector and shaping circuit; Extinguish controller export respectively square-wave signal to oscillator and the time wide-amplitude converter; Oscillator is according to the square-wave signal vibration that receives, and the oscillator signal of output fixed frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time; The time wide-amplitude converter according to the square-wave signal that receives and the oscillator signal of oscillator, convert non-oscillatory time of oscillator into the sawtooth amplitude signal and export peak detector to; Peak detector carries out peak detection to the amplitude of the sawtooth range signal that receives, and the high-low level of output expression sawtooth amplitude signal amplitude is to shaping circuit; Shaping circuit shaping filter is to the received signal also exported the digital signal that demodulates.The invention provides a kind of superregenrative reception method, oscillator vibrates according to the square-wave signal that extinguishes controller output in this method, and the oscillator signal of output natural frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time; The time wide-amplitude converter convert non-oscillatory time of oscillator the amplitude of sawtooth amplitude signal into, and export peak detector to; Peak detector range signal amplitude is to the received signal carried out peak detection, and the high-low level of output expression sawtooth amplitude signal amplitude is to shaping circuit; Shaping circuit to the high-low level shaping filter that receives after the digital signal that demodulates of output.Adopt device and method of the present invention; Wide when utilizing-amplitude converter 204 converts time width into signal amplitude; Even if externally have under the signal input state with outside no signal input state under when the non-oscillatory time, difference was not obvious, the time wide-amplitude converter 204 also can be effectively convert the difference of non-oscillatory time into corresponding amplitude different sawtooth amplitude signal, utilize peak detector 205 that it is carried out detection again; Can obtain the high-low level of expression signal amplitude relative size; Can effectively decode to the signal that SAW oscillator 202 receives, shorten the number that receives a cycle of extinguishing that stable data contained, improve data transmission bauds.
Description of drawings
Fig. 1 is the structural representation of existing superregeneration receiver.
Fig. 2 is the structural representation of ultra-regeneration receiving device of the present invention.
Fig. 3 is the sketch map of the response signal of ultra-regeneration receiving device of the present invention.
Fig. 4 is the flow chart of superregenrative reception method of the present invention.
Embodiment
For make the object of the invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, to further explain of the present invention.
The invention provides a kind of ultra-regeneration receiving device, this device comprises: antenna, extinguish controller, oscillator, the time wide-amplitude converter, peak detector and shaping circuit; Extinguish controller export respectively square-wave signal to oscillator and the time wide-amplitude converter; Oscillator is according to the square-wave signal oscillates that receives, and the oscillator signal of output fixed frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time; The time wide-amplitude converter according to the square-wave signal that receives and the oscillator signal of oscillator, convert non-oscillatory time of oscillator into the sawtooth amplitude signal and export peak detector to; Peak detector carries out peak detection to the amplitude of the sawtooth amplitude signal that receives, and the high-low level of output expression sawtooth amplitude signal amplitude is to shaping circuit; Shaping circuit shaping filter is to the received signal also exported the digital signal that demodulates.
The invention provides a kind of superregenrative reception method, oscillator vibrates according to the square-wave signal that extinguishes controller output in this method, and the oscillator signal of output natural frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time; The time wide-amplitude converter convert non-oscillatory time of oscillator the amplitude of sawtooth amplitude signal into, and export peak detector to; Peak detector amplitude is to the received signal carried out peak detection, and the high-low level of output expression sawtooth amplitude signal amplitude is to shaping circuit; Shaping circuit to the high-low level shaping filter that receives after the digital signal that demodulates of output.
Fig. 2 is the structural representation of ultra-regeneration receiving device of the present invention, and Fig. 3 is the sketch map of the response signal of ultra-regeneration receiving device of the present invention.Combine Fig. 2 and Fig. 3 that ultra-regeneration receiving device of the present invention is described at present, specific as follows:
Ultra-regeneration receiving device of the present invention comprises antenna 200, extinguishes controller 201, SAW oscillator 202, envelope detector 203, the time wide-amplitude converter 204, peak detector 205 and shaping circuit 206.
The oscillator of ultra-regeneration receiving device of the present invention adopts surface acoustic wave, and (Surface AcousticWave, SAW) oscillator 202.For sake of clarity; Define the existing cycle of oscillation of extinguishing to SAW oscillator 202: as shown in Figure 3; Extinguishing of SAW oscillator 202 comprises that starting of oscillation time, duration of oscillation and fall time, T are extinguishing cycle of oscillation of SAW oscillator 202 cycle of oscillation, and T1 is the fall time; T2 is the starting of oscillation time, and T3 is a duration of oscillation.The non-oscillatory time of the present invention is starting of oscillation time T 2 and fall time T1 sum.
The external signal that antenna 200 receives be comprise transmitter emission by the mixed signal of the noise signal of the CF signal of digital signal modulation and other frequency, be the noise signal of other frequency only perhaps.For sake of clarity; The existing external signal that antenna 200 is received only is defined as outside no signal input state for the situation of the noise signal of other frequency, and the external signal that antenna 200 is received comprises that the situation of mixed signal of noise signal of certain CF signal and other frequency of transmitter emission is defined as the outside signal input state is arranged.
Square-wave signal to the SAW oscillator 202 that extinguishes the 201 output cycles of controller and be T is in time wide-amplitude converter 204, and with the starting of oscillation of control SAW oscillator 202 with extinguish the work of wide when controlling simultaneously-amplitude converter 204.The concrete composition structure of extinguishing controller 201 of the present invention is identical with prior art; Can adopt the combination of existing clock generator and current controller; Also can adopt existing other controllers that SAW oscillator 202 is controlled, repeat no more for the concrete composition structure of extinguishing controller 201.
The amplitude of the pure oscillation signal of 203 pairs of SAW oscillators of envelope detector 202 output is carried out envelope detection, the envelope signal of output expression pure oscillation signal amplitude to the time wide-amplitude converter 204.When starting of oscillation time T 2 shortenings of SAW oscillator 202, then the duration of oscillation T3 of SAW oscillator 202 increases, and the high level time width of the envelope signal of the expression oscillator signal amplitude of envelope detector 203 outputs increases.The internal structure of envelope detector 203 of the present invention is identical with prior art, can be according to the envelope signal of the amplitude of the signal that receives output expression signal amplitude, repeat no more for the concrete internal structure of envelope detector 203.
The time wide-amplitude converter 204 according to the envelope signal of square-wave signal that extinguishes controller 201 outputs and envelope detector 203 outputs, convert the non-oscillatory time width of SAW oscillator 202 into the sawtooth amplitude signal and export peak detector 205 to.The time wide-amplitude converter 204 receive the trailing edge of the square-wave signal that extinguishes controller 201 output; The sawtooth amplitude signal that output has corresponding amplitude; When the high level of the envelope signal that receives envelope detector 203 output, the time wide-amplitude converter 204 output low levels.Above-mentioned sawtooth amplitude signal is the sawtooth signal that has with the corresponding amplitude of non-oscillatory time length of SAW oscillator 202.The time wide-amplitude converter 204 output the corresponding amplitude of sawtooth amplitude signal be directly proportional with the non-oscillatory time of SAW oscillator 202; Non-oscillatory time of SAW oscillator 202 increases, the time wide-amplitude converter 204 outputs the amplitude of sawtooth amplitude signal increase; Otherwise, the time wide-amplitude converter 204 output the amplitude of sawtooth amplitude signal reduce.The internal structure of wide when of the present invention-amplitude converter 204 is identical with prior art; Can the time width of input signal be converted into sawtooth amplitude signal output with corresponding amplitude, for the time wide-amplitude converter 204 concrete internal structure repeat no more.
The amplitude of the sawtooth amplitude signal of wide during 205 pairs of peak detectors-amplitude converter 204 outputs is carried out peak detection, high-low level to the shaping circuit 206 of output expression sawtooth amplitude signal amplitude.Existing ultra-regeneration receiving device adopts low pass filter that signal is carried out Filtering Processing; If the time width difference of the signal of input low pass filter is not obvious under the outside outside no signal input state of time width that the signal of input low pass filter under the signal input state arranged; Low pass filter is difficult to distinguish the interface that has or not external signal; The external signal of receiving that achieves a butt joint is decoded preferably; Just must increase the data of transmitting a byte a plurality of cycles of oscillation, greatly reduce data transmission bauds; The present invention has replaced existing low pass filter with peak detector 205; Peak detector 205 can to by the time the wide conversion of signals that the is more or less the same signal that comes amplitude carry out peak detection; Obtain the high-low level of expression signal amplitude relative size; Improve decoding effect, and then improved data transmission bauds.The composition structure of peak detector 205 of the present invention is identical with prior art, can carry out peak detection to the received signal, forms structure for the inside of peak detector 205 and repeats no more.
The high-low level of 206 pairs of peak detectors of shaping circuit, 205 outputs carries out shaping filter, the digital signal that output demodulates.Shaping circuit 206 of the present invention is an inverter, if the signal of peak detector 205 outputs is a high level, the signal behind the shaping filter of shaping circuit 206 outputs is a low level; Otherwise the signal behind the shaping filter of shaping circuit 206 outputs is a high level.The composition structure of shaping circuit 206 of the present invention is identical with prior art, can adopt existing inverter or existing negative circuit, forms structure for the inside of shaping circuit 206 and repeats no more
Fig. 4 is the flow chart of superregenrative reception method of the present invention.Combine Fig. 4 at present, superregenrative reception method of the present invention is described, specific as follows:
Step 401: according to the frequency adjustment non-oscillatory time of the external input signal that receives;
When antenna 200 received external signal, antenna 200 exported the external signal that obtains to SAW oscillator 202.The external signal that antenna 200 receives is the mixed signal of noise signal of carrier signal and other frequency that comprises the certain frequency of transmitter emission; Perhaps the external signal that receives of antenna 200 is the noise signal of other frequency.The frequency of the carrier signal of transmitter emission is identical with the frequency of oscillation of oscillator.
In the present invention, square-wave signal to the SAW oscillator 202 that extinguishes controller 201 output fixed cycle T with the time wide-amplitude converter 204.
Vibration is extinguished in SAW oscillator 202 starting of oscillation when receiving the rising edge that extinguishes controller 201 outputs when receiving the trailing edge that extinguishes controller 201 outputs; The pure oscillation signal of output natural frequency during vibration.When including the frequency signal identical in the external signal after SAW oscillator 202 receives the amplification of antenna 200 output with frequency of oscillation; SAW oscillator 202 shortens starting of oscillation time T 2; And fall time T1 is with to extinguish cycle of oscillation T constant; Then the duration of oscillation T3 of SAW oscillator 202 increases, and the non-oscillatory time shortens.The starting of oscillation time T 2 of SAW oscillator 202 also with the amplification of antenna 200 output after the power of external signal relevant; Under the frequency of the external signal that SAW oscillator 202 the receives situation identical with frequency of oscillation, the power of the external input signal after the amplification of antenna 200 outputs that SAW oscillator 202 receives is big more, and the starting of oscillation time T 2 of SAW oscillator 202 is short more.The frequency of the oscillator signal of SAW oscillator 202 outputs is the natural frequency of SAW oscillator 202, and this natural frequency is directly proportional with frequency of oscillation.
When outside no signal input aerial 200, only comprise the noise signal of other frequencies in the external signal after the amplification of antenna 200 outputs, the duration of oscillation of SAW oscillator 202 is T3; When there is signal input aerial 200 outside; Include the frequency signal identical in the external signal after the amplification of antenna 200 outputs with frequency of oscillation; SAW oscillator 202 shortens starting of oscillation time T 2, and duration of oscillation T3 increases, and the time under the outside no signal input state of non-oscillatory time shortens.
Step 402: the amplitude that is converted into signal the non-oscillatory time;
The time wide-amplitude converter 204 convert non-oscillatory time of SAW oscillator 202 the sawtooth amplitude signal of corresponding amplitude into, export the sawtooth amplitude signal after the conversion to peak detector 205.
The time wide-amplitude converter 204 receive the trailing edge that extinguishes controller 201 and start working, output sawtooth amplitude signal; The time wide-amplitude converter 204 output low level when receiving the oscillator signal of SAW oscillator 202 output, output low level when wide in the time of perhaps-amplitude converter 204 receives the envelope signal of envelope detector 203 outputs.Particularly, the time wide-amplitude converter 204 when receiving the high level of envelope signal of envelope detector 203 output, output low level.
When there is the signal input outside; The starting of oscillation time T 2 of SAW oscillator 202 shortens; When duration of oscillation T3 increases; Non-oscillatory time of SAW oscillator 202 shortens, the time wide-amplitude converter 204 sawtooth amplitude signal of obtaining according to the conversion of non-oscillatory time the outside no signal input of amplitude the time sawtooth amplitude signal that obtains according to the conversion of non-oscillatory time amplitude diminish.
Step 403: signal amplitude is carried out peak detection;
The peak value of the sawtooth amplitude signal that 205 pairs of peak detectors receive detects, high-low level to the shaping circuit 206 of output expression sawtooth amplitude signal.
When outside no signal was imported, the sawtooth amplitude signal of 205 pairs of acquisitions of peak detector carried out peak detection, exports high level a to shaping circuit 206; When there is signal when input the outside, the time wide-amplitude converter 204 outputs the amplitude of sawtooth amplitude signal reduce, the sawtooth amplitude signal of 205 pairs of acquisitions of peak detector carries out peak detection, exports low level a to shaping circuit 206.
Step 404: the signal shaping behind the peak detection is exported;
206 pairs of high-low levels that receive of shaping circuit carry out shaping filter, the digital signal that output demodulates.Shaping circuit 206 of the present invention is an inverter, and the shaping filter of shaping circuit 206 mainly is that input signal is carried out inversion operation.
When outside no signal is imported, the low level digital signal of output expression after the high level negate of 206 pairs of peak detectors of shaping circuit, 205 outputs; When there is the signal input outside, the digital signal of output expression high level after the low level negate of 206 pairs of peak detectors of shaping circuit, 205 outputs.In the present invention, represent that low level digital signal is a digital signaling zero, the digital signal of expression high level is a digital signal 1.
Step 405: finish.
In the above-mentioned preferred embodiment of the present invention; Wide when utilizing-amplitude converter 204 converts the time width of the non-oscillatory time of SAW oscillator 202 into signal amplitude; Even if externally have under the signal input state with outside no signal input state under the difference of non-oscillatory time when not obvious; The time wide-amplitude converter 204 also can effectively the difference of non-oscillatory time be converted into the sawtooth amplitude signal of corresponding amplitude; Utilize the sawtooth amplitude signal of 205 pairs of different amplitudes of peak detector to carry out detection again, can obtain the high-low level of expression signal amplitude relative size, and then can effectively decode the signal that SAW oscillator 202 receives; Shorten the number that receives a cycle of extinguishing that stable data contained, improved data transmission bauds.
The oscillator 102 of existing ultra-regeneration receiving device adopts the LC oscillator usually, and the frequency stability of LC oscillator is not high, needs the manufal tuning frequency, and artificial frequency modulation can have a strong impact on the decoding effect and the operating efficiency of ultra-regeneration receiving device.In the above-mentioned preferred embodiment of the present invention; The SAW oscillator 202 that employing has high frequency stability has substituted the LC oscillator in the existing ultra-regeneration receiving device; SAW oscillator 202 can stably vibrate on its natural frequency, has avoided the manufal tuning frequency, has improved the operating efficiency of receiving system; Because the frequency stability of SAW oscillator 202 is higher, the decoding quality of wide when helping improving-amplitude converter 204 and peak detector 205.
In sum, more than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. ultra-regeneration receiving device, this device comprises: antenna, extinguish controller, oscillator, the time wide-amplitude converter, peak detector and shaping circuit;
Said extinguish controller export respectively square-wave signal to oscillator and the time wide-amplitude converter;
Said oscillator is according to the square-wave signal vibration that receives, and the oscillator signal of output natural frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time;
Wide when said-amplitude converter is according to the square-wave signal that receives and the oscillator signal of oscillator, converts non-oscillatory time of oscillator into the sawtooth amplitude signal and exports peak detector to;
Said peak detector carries out peak detection to the amplitude of the sawtooth amplitude signal that receives, and the high-low level of output expression sawtooth waveforms amplitude is to shaping circuit;
Said shaping circuit carries out shaping filter and exports the digital signal that demodulates the high-low level that receives.
2. device according to claim 1 is characterized in that, said oscillator and further comprise envelope detector between wide-amplitude converter when said;
Said envelope detector carries out envelope detection to the amplitude of the oscillator signal of said oscillator output, the envelope signal of output expression oscillator signal amplitude to the time wide-amplitude converter;
Wide when said-amplitude converter is according to the envelope signal of the square-wave signal that receives and envelope detector output, converts non-oscillatory time of oscillator into the sawtooth amplitude signal and exports peak detector to.
3. device according to claim 2; It is characterized in that; Said oscillator comprises according to the square-wave signal vibration that receives: said oscillator receives the rising edge starting of oscillation of square-wave signal, and the trailing edge that receives square-wave signal extinguishes, the oscillator signal of output natural frequency during vibration;
Wide when said-amplitude converter when to convert the sawtooth amplitude signal into be said with non-oscillatory time of oscillator wide-amplitude converter receive output sawtooth amplitude signal behind the trailing edge of square-wave signal, receive output low level behind the envelope signal of expression oscillator signal.
4. according to claim 1,2 or 3 described devices, it is characterized in that said oscillator is a surface acoustic wave SAW oscillator.
5. according to claim 1,2 or 3 described devices, it is characterized in that said shaping circuit is inverter or negative circuit.
6. superregenrative reception method, this method comprises;
Oscillator is according to the square-wave signal vibration of extinguishing controller output, and the oscillator signal of output natural frequency; Oscillator is identical with the frequency of oscillation of oscillator through the frequency of the external input signal that antenna receives, and then shortens the non-oscillatory time;
The time wide-amplitude converter according to the square-wave signal that extinguishes controller output and the oscillator signal of oscillator, convert non-oscillatory time of oscillator into the sawtooth amplitude signal and export peak detector to;
Peak detector amplitude is to the received signal carried out peak detection, and the high-low level of output expression sawtooth amplitude signal amplitude is to shaping circuit;
Shaping circuit to the high-low level shaping filter that receives after the digital signal that demodulates of output.
7. method according to claim 6 is characterized in that, this method further comprises:
Envelope detector carries out envelope detection to the oscillator signal of oscillator output, the envelope signal of output expression oscillator signal amplitude to the time wide-amplitude converter;
The time wide-amplitude converter according to the envelope signal of the square-wave signal that receives and envelope detector output, convert non-oscillatory time of oscillator into the sawtooth amplitude signal and export peak detector to.
8. method according to claim 7; It is characterized in that; Said oscillator comprises according to the square-wave signal vibration of extinguishing controller output: oscillator extinguishes according to the trailing edge of the square-wave signal that extinguishes controller output that receives; According to the rising edge starting of oscillation of the square-wave signal that extinguishes controller output that receives, the oscillator signal of output natural frequency during vibration.
9. method according to claim 7 is characterized in that, wide when said-amplitude converter converts non-oscillatory time of oscillator into the sawtooth amplitude signal and comprises:
The time wide-amplitude converter square-wave signal that extinguishes controller output of receiving trailing edge output sawtooth amplitude signal, receive output low level behind the envelope signal of expression oscillator signal.
10. according to claim 6,7,8 or 9 described methods, it is characterized in that said shaping circuit is also exported the digital signal that demodulates to the high-low level shaping filter that receives and comprised:
Shaping circuit carries out inversion operation to the high-low level that receives, and the signal of the acquisition after the negate is exported as the digital signal that demodulates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910194577 CN101997557B (en) | 2009-08-25 | 2009-08-25 | Superregenerative receiving device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910194577 CN101997557B (en) | 2009-08-25 | 2009-08-25 | Superregenerative receiving device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101997557A CN101997557A (en) | 2011-03-30 |
| CN101997557B true CN101997557B (en) | 2012-12-12 |
Family
ID=43787254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910194577 Expired - Fee Related CN101997557B (en) | 2009-08-25 | 2009-08-25 | Superregenerative receiving device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101997557B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107820A (en) * | 2011-11-15 | 2013-05-15 | 南京矽志微电子有限公司 | Full-integration complementary metal oxide semiconductor (CMOS) super-regeneration time division multiplexing wireless receiver structure |
| CN103259552B (en) * | 2013-05-07 | 2015-03-18 | 中山大学 | Superregenerative receiver with ultra-low power consumption |
| CN105718835B (en) * | 2016-01-14 | 2018-12-28 | 大唐微电子技术有限公司 | A kind of number shaping circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6421535B1 (en) * | 1999-05-12 | 2002-07-16 | Xetron Corporation | Superregenerative circuit |
| CN1390394A (en) * | 1999-10-15 | 2003-01-08 | 射频波有限责任公司 | RF modem utilizing SAW device and pulse shaping |
| CN101483447A (en) * | 2007-12-12 | 2009-07-15 | 韩国电子通信研究院 | Super regenerative receiver and method of saving power of the same |
-
2009
- 2009-08-25 CN CN 200910194577 patent/CN101997557B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6421535B1 (en) * | 1999-05-12 | 2002-07-16 | Xetron Corporation | Superregenerative circuit |
| CN1390394A (en) * | 1999-10-15 | 2003-01-08 | 射频波有限责任公司 | RF modem utilizing SAW device and pulse shaping |
| CN101483447A (en) * | 2007-12-12 | 2009-07-15 | 韩国电子通信研究院 | Super regenerative receiver and method of saving power of the same |
Non-Patent Citations (2)
| Title |
|---|
| 具有稳定工作状态的无线接收用超再生振荡器;王欢 等;《半导体学报》;20080831;第29卷(第8期);第1608-1611页 * |
| 王欢 等.具有稳定工作状态的无线接收用超再生振荡器.《半导体学报》.2008,第29卷(第8期),第1608-1611页. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101997557A (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2555438A1 (en) | Communication apparatus, communication system, communication method and integrated circuit | |
| CN101997557B (en) | Superregenerative receiving device and method | |
| RU2012148915A (en) | WIRELESS COMMUNICATION EQUIPMENT AND METHOD FOR SELF-TESTING WIRELESS COMMUNICATION EQUIPMENT | |
| CN101997556B (en) | Superregenerative receiving device and method | |
| RU2013143167A (en) | RECEIVER AND RECEPTION METHOD | |
| CN103427858B (en) | Automatic gain control equipment and method, radiofrequency receiving chip and radio-frequency transmitter | |
| CN101827295A (en) | Wireless microphone and anti-interference method thereof | |
| CN204065277U (en) | A kind of car antenna testing circuit | |
| EP1225697A3 (en) | Method and circuit for avoiding band interference wave in receiver | |
| CN116436486A (en) | Super-regenerative data transmission system and method | |
| CN205356314U (en) | Ultrashort wave radio station received signal treatment circuit | |
| JP4451318B2 (en) | Active RFID tag system and receiver. | |
| CN203368453U (en) | Automatic gain control device, radio frequency receiver chip and radio frequency receiver | |
| CN205017312U (en) | Seven tubs of superheterodyne AM receivers | |
| CN103716272B (en) | A kind of BFSK modulation circuit, method and superregenerative receiver | |
| CN106303818A (en) | A kind of wireless microphone system with motion sensing control function | |
| KR100186225B1 (en) | Transceiver of Time Division Full Duplex Spread Spectrum Communication | |
| CN106257237A (en) | The phase laser distance measurement instrument of single phase-locked loop | |
| CN204795563U (en) | Wireless microphone system with control function is felt to body | |
| RU2002120269A (en) | Adaptive communication system with increased noise immunity | |
| RU79363U1 (en) | NOISE SIGNAL RECEIVER | |
| CN200997156Y (en) | Wireless long-distance self-controlling belling device | |
| CN205304822U (en) | Low -cost wireless broadcast receiving system | |
| JP2010283796A (en) | Digital communication system and wireless unit | |
| CN114726395A (en) | Wireless Simultaneous Interpretation System Based on Adjustable Frequency Source and Its Working Method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (BEIJING Effective date: 20121116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121116 Address after: 201203 Shanghai City, Pudong New Area Zhangjiang Road No. 18 Patentee after: Semiconductor Manufacturing International (Shanghai) Corporation Patentee after: Semiconductor Manufacturing International (Beijing) Corporation Address before: 201203 Shanghai City, Pudong New Area Zhangjiang Road No. 18 Patentee before: Semiconductor Manufacturing International (Shanghai) Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20200825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |