CN203166876U - Miniaturized atomic frequency standard - Google Patents
Miniaturized atomic frequency standard Download PDFInfo
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- CN203166876U CN203166876U CN 201320073188 CN201320073188U CN203166876U CN 203166876 U CN203166876 U CN 203166876U CN 201320073188 CN201320073188 CN 201320073188 CN 201320073188 U CN201320073188 U CN 201320073188U CN 203166876 U CN203166876 U CN 203166876U
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- 239000013078 crystal Substances 0.000 claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 230000003321 amplification Effects 0.000 claims abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 6
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims abstract 9
- 238000001514 detection method Methods 0.000 claims abstract 8
- 230000010355 oscillation Effects 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 13
- 229910052701 rubidium Inorganic materials 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims description 7
- 238000012937 correction Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000003786 synthesis reaction Methods 0.000 claims 2
- 230000023077 detection of light stimulus Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 claims 1
- 238000001228 spectrum Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 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
- 238000012545 processing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
本实用新型公开了一种小型化原子频标，属于电子技术领域。所述原子频标包括用于输出原始频率信号的晶体振荡模块；用于隔离和放大原始频率信号的隔离放大器；用于产生综合调制信号和参考信号的综合模块；用于对隔离放大器的输出信号和综合调制信号同时进行倍频和混频，以产生微波探询信号的微波倍混频模块；用于对微波探询信号进行鉴频，产生光检信号的物理系统模块；以及用于对光检信号进行选频放大，并将选频放大后的光检信号与参考信号进行同步鉴相，以产生纠偏电压的伺服模块；其中，晶体振荡模块、隔离放大器、综合模块、微波倍混频模块、伺服模块均采用布置在印制电路板上的贴片元件或集成芯片。本实用新型大大减小了原子频标的体积。
The utility model discloses a miniaturized atomic frequency standard, which belongs to the technical field of electronics. The atomic frequency standard includes a crystal oscillator module for outputting the original frequency signal; an isolation amplifier for isolating and amplifying the original frequency signal; an integrated module for generating integrated modulation signals and reference signals; Simultaneously perform frequency multiplication and frequency mixing with the integrated modulation signal to generate a microwave frequency multiplication and mixing module for microwave interrogation signals; a physical system module for frequency discrimination of microwave interrogation signals to generate optical detection signals; and a physical system module for optical detection signals Perform frequency selective amplification, and perform synchronous phase detection between the optical detection signal and the reference signal after frequency selective amplification to generate a servo module for correcting voltage; among them, the crystal oscillator module, isolation amplifier, integrated module, microwave frequency multiplier module, servo The modules all adopt SMD components or integrated chips arranged on the printed circuit board. The utility model greatly reduces the volume of the atomic frequency standard.
Description
Technical field
The utility model relates to electronic technology field, particularly a kind of miniaturization atomic frequency standard.
Background technology
Atomic frequency standard is a kind of frequency source with good stable degree and accuracy, is widely used in satellite fix and navigation, punctual time service, communicates by letter, fields such as instrument and meter and astronomy.Rb atom frequency marking becomes the atomic frequency standard that is most widely used at present because it has advantages such as volume is little, in light weight, low in energy consumption, cost is low.
Existing atomic frequency standard comprises crystal oscillation module, isolated amplifier, microwave times frequency mixing module, physical system module, comprehensive module and servo module.Wherein, the crystal oscillation module is used for output original frequency signal; Isolated amplifier is used for the original frequency signal being isolated and amplifying; Comprehensive module is for generation of comprehensive modulation signal and reference signal; Microwave times frequency mixing module is used for the comprehensive modulation signal of the output signal of isolated amplifier and comprehensive module generation is carried out frequency multiplication and mixing simultaneously, to produce the microwave interrogation signals; The physical system module is used for the microwave interrogation signals is carried out frequency discrimination, produces light inspection signal; Servo module is used for that light inspection signal is carried out frequency-selecting and amplifies, and the light inspection signal after the frequency-selecting amplification is carried out synchronous phase demodulation with the reference signal that comprehensive module produces, and with the effect of generation correction voltage, adjusts the output frequency of crystal oscillation module; By the said structure unit, the output frequency of crystal oscillation module is locked on the hyperfine 0-0 centre frequency of atomic ground state the most at last.Crystal oscillation module, isolated amplifier, microwave times frequency mixing module, comprehensive module, servo module all adopt analogue device.
In realizing process of the present utility model, the inventor finds that there is following problem at least in prior art:
Because existing atomic frequency standard adopts analogue device, the analogue device volume is bigger, and therefore the atomic frequency standard volume of forming is bigger, and application is restricted.
The utility model content
In order to solve prior art owing to volume causes using limited problem greatly, the utility model embodiment provides a kind of miniaturization atomic frequency standard.Described technical scheme is as follows:
The utility model embodiment provides a kind of miniaturization atomic frequency standard, and described atomic frequency standard comprises:
The crystal oscillation module that is used for output original frequency signal;
Be used for isolating and amplifying the isolated amplifier of described original frequency signal;
Comprehensive module for generation of comprehensive modulation signal and reference signal;
Be used for output signal and the described comprehensive modulation signal of described isolated amplifier are carried out frequency multiplication and mixing simultaneously, to produce the microwave times frequency mixing module of microwave interrogation signals;
Be used for described microwave interrogation signals is carried out frequency discrimination, produce the physical system module of light inspection signal; And
Be used for that described light inspection signal is carried out frequency-selecting and amplify, and light inspection signal and described reference signal after the frequency-selecting amplification are carried out synchronous phase demodulation, to produce the servo module of correction voltage;
Wherein, described crystal oscillation module is electrically connected with described isolated amplifier, described servo module respectively, described isolated amplifier is electrically connected with described physical system module by described microwave times frequency mixing module, described isolated amplifier is electrically connected with described servo module by described comprehensive module, described microwave times frequency mixing module is electrically connected with described comprehensive module, and described physical system module is electrically connected with described servo module; Described crystal oscillation module, described isolated amplifier, described comprehensive module, described microwave times frequency mixing module, described servo module all adopt surface mount elements or integrated chip, and described surface mount elements and described integrated chip are arranged on the printed circuit board.
Wherein, described physical system module comprises:
Be filled with the spectroscopic lamp of rubidium and starter gas for the inside that pumping light is provided;
The inside that is used for optical filtering and atomic resonance is filled with the integrated filtering resonance bubble of rubidium and buffer gas;
Be used to the microwave resonance of atom that the microwave cavity of microwave field is provided;
Uniform magnetic field coil for generation of the weak magnetostatic field parallel with the microwave magnetic field direction;
Be used for surveying the photocell of integrated filtering resonance bubble transmitted light;
Be used for transmitting the coupling loop of microwave interrogation signals; And
Be used for the electromagnetic magnetic cup of shielding;
Wherein, described microwave cavity is arranged in the described magnetic cup, described coupling loop is arranged on the described microwave cavity, described uniform magnetic field coil is around described microwave cavity setting, described photocell and described integrated filtering resonance bubble are arranged in the described microwave cavity, and described integrated filtering resonance bubble is positioned at described spectroscopic lamp and described photronic centre.
Preferably, described photocell is silicon photocell.
Further, described physical system module also comprises constant temperature chamber and constant-temperature circuit, and described spectroscopic lamp is arranged in the described constant temperature chamber, and described constant-temperature circuit is electrically connected with described microwave cavity.
Preferably, described comprehensive module comprises that described Direct Digital Synthesizer is electrically connected with described processor for the Direct Digital Synthesizer of frequency division with for generation of the processor of described comprehensive modulation signal.
In addition, described atomic frequency standard also comprises shielding cylinder, and described spectroscopic lamp and a described microwave times frequency mixing module are arranged in the described shielding cylinder.
Preferably, described printed circuit board is multi-layer sheet, and it is ground plane that one deck is arranged in the described multi-layer sheet; On printed circuit board, described microwave times frequency mixing module is nearer than the distance of described crystal oscillation module, described isolated amplifier, described comprehensive module, described servo module and power output end with the distance of power output end.
Preferably, described power output end links to each other with filter.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
By adopting surface mount elements or integrated chip, reduced the volume of atomic frequency standard greatly, make the application of atomic frequency standard more extensive.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of miniaturization atomic frequency standard of providing of the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model execution mode is described in further detail.
Embodiment
The utility model provides a kind of miniaturization atomic frequency standard, and referring to Fig. 1, this atomic frequency standard comprises crystal oscillation module 1, isolated amplifier 2, comprehensive module 3, microwave times frequency mixing module 4, physical system module 5 and servo module 6.Crystal oscillation module 1, isolated amplifier 2, comprehensive module 3, microwave times frequency mixing module 4, servo module 6 all adopt surface mount elements or integrated chip, and surface mount elements and integrated chip are arranged on the printed circuit board.
Wherein, crystal oscillation module 1 is used for output original frequency signal.Isolated amplifier 2 is electrically connected with crystal oscillation module 1, is used for isolating and amplifying the original frequency signal.Comprehensive module 3 is electrically connected with isolated amplifier 2, for generation of comprehensive modulation signal and reference signal.Microwave times frequency mixing module 4 is electrically connected with isolated amplifier 2, comprehensive module 3 respectively, is used for output signal and the comprehensive modulation signal of isolated amplifier 2 are carried out frequency multiplication and mixing simultaneously, to produce the microwave interrogation signals.Physical system module 5 is electrically connected with microwave times frequency mixing module 4, is used for the microwave interrogation signals is carried out frequency discrimination, produces light inspection signal.Servo module 6 is electrically connected with comprehensive module 3, physical system module 5, crystal oscillation module 1 respectively, is used for that light inspection signal is carried out frequency-selecting and amplifies, and light inspection signal and reference signal after the frequency-selecting amplification are carried out synchronous phase demodulation, to produce correction voltage.
Particularly, physical system module 5 comprise be used to the inside that pumping light is provided be filled with rubidium and starter gas spectroscopic lamp 51, be used for to filter and the inside of atomic resonance be filled with rubidium and buffer gas integrated filtering resonance bubble 52, be used to the microwave resonance of atom provide microwave field microwave cavity 53, for generation of the uniform magnetic field coil 54 of the weak magnetostatic field parallel with the microwave magnetic field direction, be used for surveying integrated filtering resonance bubble transmitted light photocell 55, be used for transmitting the coupling loop 56 of microwave interrogation signals and be used for the electromagnetic magnetic cup 57 of shielding.
Wherein, microwave cavity 53 is arranged in the magnetic cup 57, and coupling loop 56 is arranged on the microwave cavity 53, and uniform magnetic field coil 54 circles arrange around microwave cavity 53, photocell 55 and integrated filtering resonance bubble 52 are arranged in the microwave cavity 53, and integrated filtering resonance bubble 52 is positioned at the centre of spectroscopic lamp 51 and photocell 55.
Preferably, photocell 55 is for there being the silicon photocell of better sensitivity at the 800nm place.
Further, physical system module 5 also comprises constant temperature chamber and temperature-adjusting circuit.Spectroscopic lamp 51 is arranged in the constant temperature chamber, and temperature-adjusting circuit is electrically connected with microwave cavity 53.
Preferably, comprehensive module 3 comprises the DDS(Direct Digital Synthesizer for frequency division, Direct Digital Synthesizer) and for generation of the processor of comprehensive modulation signal, DDS is electrically connected with processor.
In addition, this atomic frequency standard also comprises shielding cylinder, and spectroscopic lamp 31 and microwave times frequency mixing module 4 is arranged in the shielding cylinder.
Preferably, the input of the part except spectroscopic lamp 31 and microwave times frequency mixing module 4 and output serial inductor capacitance circuit in the atomic frequency standard.
Preferably, printed circuit board is multi-layer sheet, and it is ground plane that one deck is arranged in the multi-layer sheet.
Further, on printed circuit board, microwave times frequency mixing module 4 is nearer than the distance of crystal oscillation module 1, isolated amplifier 2, comprehensive module 3, servo module 6 and power output end with the distance of power output end.
Preferably, power output end links to each other with filter.
Particularly, filter is capacitance resistance low pass filter or low value capacitance filtering.
Particularly, crystal oscillation module 1, isolated amplifier 2, comprehensive module 3, microwave times frequency mixing module 4, physical system module 5, servo module 6 separate ground connection.The ground wire of crystal oscillation module 1, comprehensive module 3, microwave times frequency mixing module 4, servo module 6 is walked into latticed, makes each element ground connection nearby.The grounding through resistance of isolated amplifier 2 and a big resistance of physical system module 5 series connection.
Simply introduce the operation principle of the miniaturization atomic frequency standard that the utility model provides below:
After 1 starting of oscillation of crystal oscillation module, output signal is divided into two paths of signals output by the processing of isolated amplifier 2.One road direction is exported outward, another road is transferred to microwave times frequency mixing module 4 and handles simultaneously with the comprehensive modulation signal of comprehensive module 3, the microwave interrogation signals of output makes rubidium atom generation transition in the integrated filtering resonance bubble 52 by coupling loop 56 and microwave cavity 53, changed the light signal that passes through integrated filtering resonance bubble 52 of spectroscopic lamp 51 emissions, photocell 55 is examined signal with light and is converted into the signal of telecommunication and is transferred to servo module 6, servo module 6 produces correction voltage, act on the crystal resonance module 1, adjust the output frequency of crystal oscillation module 1, the output frequency of crystal oscillation module 1 is locked on the hyperfine 0-0 centre frequency of atomic ground state.
The utility model embodiment has reduced the volume of atomic frequency standard greatly by adopting surface mount elements or integrated chip, makes the application of atomic frequency standard more extensive.And comprehensive module adopts the DDS frequency division, has further reduced the volume of atomic frequency standard.In addition, constant temperature chamber and constant-temperature circuit make the performance of spectroscopic lamp more stable, photocell adopts silicon photocell, testing result is more accurate, the input that uses screening arrangement, each several part circuit and output serial inductor capacitance circuit, microwave times frequency mixing module are nearer than crystal oscillation module, isolated amplifier, comprehensive module, servo module apart from the distance of power output end, power output end links to each other with filter, prevented that high-frequency circuit partly is interfered, and has satisfied electromagnetic compatibility requirements.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320073188 CN203166876U (en) | 2013-02-16 | 2013-02-16 | Miniaturized atomic frequency standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320073188 CN203166876U (en) | 2013-02-16 | 2013-02-16 | Miniaturized atomic frequency standard |
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| Publication Number | Publication Date |
|---|---|
| CN203166876U true CN203166876U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320073188 Expired - Fee Related CN203166876U (en) | 2013-02-16 | 2013-02-16 | Miniaturized atomic frequency standard |
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| Country | Link |
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| CN (1) | CN203166876U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410415A (en) * | 2014-11-27 | 2015-03-11 | 江汉大学 | Improved passive atomic frequency scale |
| CN107272394A (en) * | 2017-06-16 | 2017-10-20 | 江汉大学 | A kind of integrated resonant time dissemination system calibration method of backup formula |
| CN109818249A (en) * | 2018-12-13 | 2019-05-28 | 江汉大学 | Devices based on cold-atom laser circuits |
-
2013
- 2013-02-16 CN CN 201320073188 patent/CN203166876U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410415A (en) * | 2014-11-27 | 2015-03-11 | 江汉大学 | Improved passive atomic frequency scale |
| CN107272394A (en) * | 2017-06-16 | 2017-10-20 | 江汉大学 | A kind of integrated resonant time dissemination system calibration method of backup formula |
| CN109818249A (en) * | 2018-12-13 | 2019-05-28 | 江汉大学 | Devices based on cold-atom laser circuits |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140216 |