CN105515582A - Atomic clock frequency and phase adjustment device - Google Patents
Atomic clock frequency and phase adjustment device Download PDFInfo
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- CN105515582A CN105515582A CN201510994036.0A CN201510994036A CN105515582A CN 105515582 A CN105515582 A CN 105515582A CN 201510994036 A CN201510994036 A CN 201510994036A CN 105515582 A CN105515582 A CN 105515582A
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- 238000002955 isolation Methods 0.000 claims abstract description 26
- 239000013078 crystal Substances 0.000 claims abstract description 14
- 230000002194 synthesizing effect Effects 0.000 claims description 9
- 238000009966 trimming Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 230000004304 visual acuity Effects 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The invention discloses an atomic clock frequency and phase adjustment device. The device includes a reference signal input end, a first isolation distribution amplifier which divides inputted 5MHz reference signals into three paths of 5MHz signals, a frequency synthesis module which outputs 10MHz signals based on external frequency and phase control information and with the first path of 5MHz signals which have been subjected to 10 times of frequency multiplication adopted as time, a frequency mixing unit which mixes the second path of 5MHz signals with the third path of 5MHz signals which have been subjected to 1/500 frequency division, 5MHz signals and 10MHz signals which have been subjected to 1/1000 frequency division and are outputted by the frequency synthesizer, and then, outputs 10MHz frequency-mixed signals, and a high-stability crystal oscillator which outputs 5MHz signals based on the 10MHz frequency-mixed signals.
Description
Technical field
The present invention relates to precision instrument adjusting device, particularly relate to a kind of high accuracy frequency for atomic clock and phase adjusting apparatus.
Background technology
The basic equipment of Time keeping system is atomic clock, although the time and frequency standards that atomic clock provides has very high frequency accuracy and frequency stability, but because atomic clock exists the reason such as component ageing, variation of ambient temperature, there is the characteristic of long term drift rate, and punctual atomic clock adjusts once work with regard to not allowing again, although so just occurred that punctual atomic clock has excellent frequency characteristic, along with long-time continuous is run, the problem that punctual cumulative errors can constantly increase.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of atomic frequency and phase adjusting apparatus, to solve because atomic clock long-time continuous is run in prior art, and the problem that the punctual cumulative errors caused increase.
For solving the problems of the technologies described above, the present invention adopts following technical proposals:
A kind of atomic frequency and phase adjusting apparatus, this device comprises:
Reference signal input;
First isolation distribution amplifier, is divided into three road 5MHz signals by the 5MHz reference signal of input;
Frequency synthesizing module, based on frequency and the phase control information of outside, using the first via 5MHz after 10 times of frequencys multiplication as clock, exports 10MHz signal;
Mixing unit, by the second road 5MHz signal successively with 1/500 frequency division after the 10MHz signal mixing that exports of the 3rd road 5MHz signal, 5MHz signal and the frequency synthesizer after 1/1000 frequency division, export the mixed frequency signal of 10kHz;
Highly stable crystal oscillator, based on described 10kHz mixed frequency signal, exports 5MHz signal.
Preferably, described frequency synthesizing module adopts frequency resolution to be 2
-48, phase resolution is 2
-14frequency synthesizer.
Preferably, described mixed endorsement unit comprises:
First frequency mixer, for by the 3rd road 5MHz signal mixing after the second road 5MHz signal and 1/500 frequency division, exports 5MHz+10kHz signal;
Second frequency mixer, for by 5MHz+10kHz signal and the mixing of outside 5MHz signal, exports 10kHz signal;
Three-mixer, the 10MHz signal mixing that the 10kHz signal for being exported by the second frequency mixer exports with the frequency synthesizer after 1/1000 frequency division, exports the mixed frequency signal of 10kHz.
Preferably, this device comprises the 10 times of frequency multipliers be arranged between the first isolation distribution amplifier and frequency synthesizing module.
Preferably, this device comprises 1/1000 frequency divider be arranged between frequency synthesizer and three-mixer.
Preferably, this device comprises 1/500 frequency divider be arranged between the first isolation distribution amplifier and the first frequency mixer.
Preferably, this device comprises and is arranged on the loop filter between three-mixer and highly stable crystal oscillator.
Preferably, this device comprises the second isolation distribution amplifier, and the 5MHz signal for being exported by highly stable crystal oscillator is divided into three road 5MHz signals to export; Wherein, first via 5MHz signal inputs the second frequency mixer, and the second road 5MHz signal exports external equipment to.
Preferably, this device comprises synchronization module, and based on the second the 3rd road 5MHz signal and 1pps signal of sending of isolation distribution amplifier, exporting can the 1pps signal of Precision trimming.
Beneficial effect of the present invention is as follows:
Technical scheme of the present invention can for the drift value of different atomic clock, and the adjustment carrying out accurate output frequency and impulse phase, to make up the drift of atomic clock self, makes the time remain on very high synchronization accuracy.This programme resolution is very high, and its phase deviation resolving power can reach femtosecond fs magnitude, and frequency shift (FS) resolving power can reach 10
-18magnitude.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail;
Fig. 1 illustrates the schematic diagram of a kind of atomic frequency of the present invention and phase adjusting apparatus.
Embodiment
In order to be illustrated more clearly in the present invention, below in conjunction with preferred embodiments and drawings, the present invention is described further.Parts similar in accompanying drawing represent with identical Reference numeral.It will be appreciated by those skilled in the art that specifically described content is illustrative and nonrestrictive, should not limit the scope of the invention with this below.
As shown in Figure 1, the invention discloses a kind of atomic frequency and phase adjusting apparatus, this device comprises: for inputting the reference signal input of 5MHz signal, for the 5MHz reference signal of input being divided into the first isolation distribution amplifier of three road 5MHz signals, based on frequency and the phase control information of outside, using the first via 5MHz after 10 times of frequencys multiplication as clock, export the frequency synthesizing module of 10MHz signal, by the second road 5MHz signal successively with 1/500 frequency division after the 3rd road 5MHz signal, the 10MHz signal mixing that 5MHz signal and the frequency synthesizer after 1/1000 frequency division export, export 10kHz mixed frequency signal mixing unit and based on described 10kHz mixed frequency signal, export the highly stable crystal oscillator of 5MHz signal.In this programme, described frequency synthesizing module adopts frequency resolution to be 2
-48, phase resolution is 2
-14frequency synthesizer.Described mixed endorsement unit comprises: for by the 3rd road 5MHz signal mixing after the second road 5MHz signal and 1/500 frequency division, export the first frequency mixer of 5MHz+10kHz signal, for by 5MHz+10kHz signal and the mixing of outside 5MHz signal, exporting the second frequency mixer of 10kHz signal and the 10MHz signal mixing for being exported with the frequency synthesizer after 1/1000 frequency division by the 10kHz signal of the second frequency mixer output, exporting the three-mixer of the mixed frequency signal of 10kHz.Atomic frequency described in this programme and phase adjusting apparatus comprise further: be arranged on 10 times of frequency multipliers between the first isolation distribution amplifier and frequency synthesizing module; Be arranged on 1/1000 frequency divider between frequency synthesizer and three-mixer; Be arranged on 1/500 frequency divider between the first isolation distribution amplifier and the first frequency mixer; Be arranged on the loop filter between three-mixer and highly stable crystal oscillator.This device comprises the second isolation distribution amplifier further, and the 5MHz signal for being exported by highly stable crystal oscillator is divided into three road 5MHz signals to export; Wherein, first via 5MHz signal inputs the second frequency mixer, and the second road 5MHz signal exports external equipment to.This device comprises synchronization module further, and based on the second isolation the 3rd road 5MHz signal that sends of distribution amplifier and 1pps (1PulsePerSecond) signal, exporting can the 1pps signal of Precision trimming.
The input of the first isolation distribution amplifier is connected with reference signal input, first output of described first isolation distribution amplifier is connected with the input of frequency synthesizer by 10 times of frequency multipliers, frequency synthesizer receives the frequency that sends of external equipment and phase control information by control signal input, and the output of described frequency synthesizer is connected with the first input end of three-mixer by 1/1000 frequency divider, second output of described first isolation distribution amplifier is connected with the first input end of the second frequency mixer, 3rd output of described first isolation distribution amplifier is connected with the second input of the first frequency mixer by 1/500 frequency divider, the output of the first frequency mixer is connected with the first input end of the second frequency mixer, and the output of the second frequency mixer is connected with the second input of three-mixer, the output of three-mixer is connected with the voltage-controlled end of highly stable crystal oscillator by loop filter, the output of high temperature crystal oscillator is connected with the second input of isolating distribution amplifier, second isolation the first output of distribution amplifier is connected with the second input of the second frequency mixer, second output of the second isolation distribution amplifier exports 5MHz signal, 3rd output of the second isolation distribution amplifier is connected with synchronization module, synchronization module exports the adjustable 1pps signal of high accuracy based on the 3rd road 5MHz signal of 1pps reference signal and the second isolation distribution amplifier.
Outside 5MHz reference signal is by reference to signal input part input unit, and this reference signal exports first via 5MHz signal, the second road 5MHz signal and the 3rd road 5MHz signal after the first isolation distribution amplifier.First via 5MHz signal exports 50MHz signal after low noise 10 frequency multiplication, with the clock of this signal as frequency synthesizer.Export 10MHz signal by program control frequency synthesizer, this signal outputs signal after 1/1000 frequency division again.Wherein, the frequency resolution of frequency synthesizer is 2
-48, phase resolution is 2
-14.3rd road 5MHz signal exports 10kHz signal after 1/500 frequency division, 5MHz+10kHz signal is obtained with the second road 5MHz signal mixing, this 5MHz+10kHz signal and second is isolated the road 5MHz signal mixing that distribution amplifier exports and is obtained 10kHz signal, the 10MHz signal mixing that this 10kHz signal obtained exports with the frequency synthesizer through 1/1000 frequency division, obtain 10kHz mixed frequency signal, this 10kHz mixed frequency signal exports the voltage-controlled end of high stability crystal oscillator to after loop filter.The signal that 5MHz highly stable crystal oscillator exports exports first via 5MHz signal, the second road 5MHz signal and the 3rd road 5MHz signal after the second isolation distribution amplifier distributes amplification, wherein a road signal is as the mixed frequency signal of the second frequency mixer, for phase-locked loop, another two paths of signals is as final output signal with for generation of 1PPS signal.Based on such scheme, achieved the Precision trimming of atomic clock output signal by the frequency control word changing frequency synthesizer, effectively completed the frequency difference multiplier of 1000 times by 1/1000 frequency division, improve the resolving power of system.
Obviously; the above embodiment of the present invention is only for example of the present invention is clearly described; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give exhaustive to all execution modes, every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (9)
1. atomic frequency and a phase adjusting apparatus, is characterized in that, this device comprises:
Reference signal input;
First isolation distribution amplifier, is divided into three road 5MHz signals by the 5MHz reference signal of input;
Frequency synthesizing module, based on frequency and the phase control information of outside, using the first via 5MHz after 10 times of frequencys multiplication as clock, exports 10MHz signal;
Mixing unit, by the second road 5MHz signal successively with 1/500 frequency division after the 10MHz signal mixing that exports of the 3rd road 5MHz signal, 5MHz signal and the frequency synthesizer after 1/1000 frequency division, export the mixed frequency signal of 10kHz;
Highly stable crystal oscillator, based on described 10kHz mixed frequency signal, exports 5MHz signal.
2. atomic frequency according to claim 1 and phase adjusting apparatus, is characterized in that, described frequency synthesizing module adopts frequency resolution to be 2
-48, phase resolution is 2
-14frequency synthesizer.
3. atomic frequency according to claim 1 and phase adjusting apparatus, is characterized in that, described mixed endorsement unit comprises:
First frequency mixer, for by the 3rd road 5MHz signal mixing after the second road 5MHz signal and 1/500 frequency division, exports 5MHz+10kHz signal;
Second frequency mixer, for by 5MHz+10kHz signal and the mixing of outside 5MHz signal, exports 10kHz signal;
Three-mixer, the 10MHz signal mixing that the 10kHz signal for being exported by the second frequency mixer exports with the frequency synthesizer after 1/1000 frequency division, exports the mixed frequency signal of 10kHz.
4. atomic frequency according to claim 1 and phase adjusting apparatus, is characterized in that, this device comprises the 10 times of frequency multipliers be arranged between the first isolation distribution amplifier and frequency synthesizing module.
5. atomic frequency according to claim 3 and phase adjusting apparatus, is characterized in that, this device comprises 1/1000 frequency divider be arranged between frequency synthesizer and three-mixer.
6. atomic frequency according to claim 3 and phase adjusting apparatus, is characterized in that, this device comprises 1/500 frequency divider be arranged between the first isolation distribution amplifier and the first frequency mixer.
7. atomic frequency according to claim 3 and phase adjusting apparatus, is characterized in that, this device comprises and is arranged on the loop filter between three-mixer and highly stable crystal oscillator.
8. atomic frequency according to claim 3 and phase adjusting apparatus, is characterized in that, this device comprises the second isolation distribution amplifier, and the 5MHz signal for being exported by highly stable crystal oscillator is divided into three road 5MHz signals to export; Wherein, first via 5MHz signal inputs the second frequency mixer, and the second road 5MHz signal exports external equipment to.
9. atomic frequency according to claim 8 and phase adjusting apparatus, is characterized in that, this device comprises synchronization module, and based on the second the 3rd road 5MHz signal and 1pps signal of sending of isolation distribution amplifier, exporting can the 1pps signal of Precision trimming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510994036.0A CN105515582A (en) | 2015-12-25 | 2015-12-25 | Atomic clock frequency and phase adjustment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510994036.0A CN105515582A (en) | 2015-12-25 | 2015-12-25 | Atomic clock frequency and phase adjustment device |
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| CN105515582A true CN105515582A (en) | 2016-04-20 |
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| CN201510994036.0A Pending CN105515582A (en) | 2015-12-25 | 2015-12-25 | Atomic clock frequency and phase adjustment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773612A (en) * | 2017-01-12 | 2017-05-31 | 中国科学院上海光学精密机械研究所 | Improve the system and method for atomic frequency stability |
| CN114221653A (en) * | 2022-02-22 | 2022-03-22 | 浙江赛思电子科技有限公司 | Signal processing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020125959A1 (en) * | 2001-03-08 | 2002-09-12 | Ken Atsumi | Rubidium atom oscillator generating a stable frequency |
| CN101064510A (en) * | 2007-04-19 | 2007-10-31 | 电子科技大学 | Low phase spurious frequency synthesis method |
| CN102394647A (en) * | 2011-10-17 | 2012-03-28 | 中国科学院上海光学精密机械研究所 | Intermittent rubidum atomic clock microwave frequency synthesizer |
| CN203086445U (en) * | 2012-12-17 | 2013-07-24 | 江汉大学 | Novel microwave atomic clock system |
-
2015
- 2015-12-25 CN CN201510994036.0A patent/CN105515582A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020125959A1 (en) * | 2001-03-08 | 2002-09-12 | Ken Atsumi | Rubidium atom oscillator generating a stable frequency |
| CN101064510A (en) * | 2007-04-19 | 2007-10-31 | 电子科技大学 | Low phase spurious frequency synthesis method |
| CN102394647A (en) * | 2011-10-17 | 2012-03-28 | 中国科学院上海光学精密机械研究所 | Intermittent rubidum atomic clock microwave frequency synthesizer |
| CN203086445U (en) * | 2012-12-17 | 2013-07-24 | 江汉大学 | Novel microwave atomic clock system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773612A (en) * | 2017-01-12 | 2017-05-31 | 中国科学院上海光学精密机械研究所 | Improve the system and method for atomic frequency stability |
| CN106773612B (en) * | 2017-01-12 | 2019-09-20 | 中国科学院上海光学精密机械研究所 | Improve the system and method for atomic frequency stability |
| CN114221653A (en) * | 2022-02-22 | 2022-03-22 | 浙江赛思电子科技有限公司 | Signal processing device |
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Application publication date: 20160420 |
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