CN205864427U - The phase precompensation module that microwave frequency signal based on optical fiber surely transmits mutually - Google Patents
The phase precompensation module that microwave frequency signal based on optical fiber surely transmits mutually Download PDFInfo
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- CN205864427U CN205864427U CN201620837278.9U CN201620837278U CN205864427U CN 205864427 U CN205864427 U CN 205864427U CN 201620837278 U CN201620837278 U CN 201620837278U CN 205864427 U CN205864427 U CN 205864427U
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- phase precompensation
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Abstract
This utility model discloses the phase precompensation module that a kind of microwave frequency signal based on optical fiber surely transmits mutually, it includes frequency multiplier mixer module, frequency-variable module and subcarrier modulation module, the microwave frequency signal that source produces carries out frequency tripling in frequency multiplier mixer module, and be mixed with the microwave frequency signal passed through fiber optic loop passback, the medium frequency signal of output carries out frequency transformation through frequency-variable module, obtain phase precompensation signal, phase precompensation signal and source microwave signal carry out Frequency Transfer by subcarrier modulation module common modulation laser instrument, recovered by terminal station and leach phase precompensation signal.This utility model can reduce system complexity, reduces system cost.
Description
Technical field
This utility model relates to the phase precompensation module that a kind of microwave frequency signal based on optical fiber surely transmits mutually, specifically
Say it is a kind of module of stable phase angle in High-precision Microwave Frequency Transfer system.
Background technology
Along with the development of atomic frequency standard, many applications are to the requirement of highly stable frequency signal increasingly
Height, the performance advantage utilizing optical fiber link to carry out Frequency Transfer is confirmed by many research institutions, and proposes different
System structure carries out microwave frequency transmission.In these schemes, major part scheme is all the total phase place by measuring loopback signal
Change, then carries out phase precompensation to output signal in electrical domain by voltage controlled oscillator, or by piezoelectric ceramics stretch light
Fibre combines temperature control and carries out truetimedelay compensation in area of light.Owing to these Active Compensation schemes depend on feedback control, its system is often
Complex, and phase compensation speed is restricted.Small part scheme uses passive compensation way, but in order to avoid compensating signal
And do not compensate interfering between signal, need the laser instrument number utilizing wavelength-division multiplex technique, cost to be the increase in central station
Amount, also makes the time delay symmetry of link decline while the cost of increase.
Utility model content
Utility model purpose: for the problem that existing phase precompensation scheme is complicated and relatively costly, propose a kind of based on
The phase precompensation module that the microwave frequency signal of optical fiber transmits mutually.
Technical scheme: the phase precompensation module that a kind of microwave frequency signal based on optical fiber surely transmits mutually, it includes again
Frequently frequency mixing module, frequency-variable module and subcarrier modulation module；Wherein the outfan of frequency multiplier mixer module connects frequency-variable module input
End, the input of frequency-variable module outfan auxiliary connection carrier modulation block；
The microwave frequency signal that source produces carries out frequency tripling in frequency multiplier mixer module, and with pass through fiber optic loop passback
Microwave frequency signal is mixed, and the medium frequency signal of output carries out frequency transformation through frequency-variable module, obtains phase precompensation
Signal, phase precompensation signal and source microwave signal carry out Frequency Transfer by subcarrier modulation module common modulation laser instrument,
Recovered by terminal station and leach phase precompensation signal.
Further, described frequency multiplier mixer module includes AMK-3-452 frequency tripler and ADE-35MH frequency mixer, described
AMK-3-452 frequency tripler the frequency of stable source microwave signal is become three times, and export to ADE-35MH frequency mixer
Local input end is through fiber optic loop as local oscillation signal, the input signal of the rf inputs of described ADE-35MH frequency mixer
The source microwave signal that passback is passed, outfan is the intermediate-freuqncy signal through mixing.
Further, described frequency-variable module includes HMC438 five frequency divider, and described HMC438 five frequency divider is by frequency multiplication
The intermediate-freuqncy signal five of frequency mixing module output divides, and the phase precompensation that ratio is 0.4 of output frequency and source microwave signal frequency
Signal.
Further, described subcarrier modulation module includes that microwave combiner and JDSU X5 mach zhender light are transfered to other localities
Device processed, source microwave signal and phase precompensation signal are closed road, as JDSUX5 mach zhender light by described microwave combiner
The radio-frequency input signals of external modulator, light carrier is modulated by described JDSU X5 mach zhender light external modulator, will letter
Number it is delivered to terminal use through optical fiber.
Beneficial effect: compared with prior art, the steady phase of microwave frequency signal based on optical fiber provided by the utility model
The phase precompensation module of transmission, reduces system complexity, reduces system cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of this utility model specific embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with this utility model.
As shown in Figure 1-2, the phase precompensation module that microwave frequency signal based on optical fiber surely transmits mutually；Mix including frequency multiplication
Frequency module, frequency-variable module and subcarrier modulation module.Wherein the outfan of frequency multiplier mixer module connects frequency-variable module input, becomes
The input of frequency module outfan auxiliary connection carrier modulation block；Frequency multiplier mixer module include AMK-3-452 frequency tripler and
ADE-35MH frequency mixer, the frequency of stable source microwave signal is become three times, and exports to ADE-by AMK-3-452 frequency tripler
The local input end of 35MH frequency mixer is as local oscillation signal, and the input signal of the rf inputs of ADE-35MH frequency mixer is for passing through
Fiber optic loop returns the source microwave signal passed, and outfan is the intermediate-freuqncy signal through mixing.
Frequency-variable module includes HMC438 five frequency divider, the intermediate-freuqncy signal that frequency multiplier mixer module is exported by HMC438 five frequency divider
Five frequency dividings, and the phase precompensation signal that ratio is 0.4 of output frequency and source microwave signal frequency.
Subcarrier modulation module includes microwave combiner and JDSU X5 mach zhender light external modulator, microwave combiner
Source microwave signal and phase precompensation signal are closed road, and the radio frequency as JDSU X5 mach zhender light external modulator inputs letter
Number, light carrier is modulated by JDSU X5 mach zhender light external modulator, and through optical fiber, signal is delivered to terminal use.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvement, these improvement also should be regarded as
Protection domain of the present utility model.
Claims (4)
1. the phase precompensation module that a microwave frequency signal based on optical fiber surely transmits mutually, it is characterised in that: include frequency multiplication
Frequency mixing module, frequency-variable module and subcarrier modulation module；Wherein the outfan of frequency multiplier mixer module connects frequency-variable module input,
The input of frequency-variable module outfan auxiliary connection carrier modulation block；
The microwave frequency signal that source produces carries out frequency tripling in frequency multiplier mixer module, and with return the microwave passed through fiber optic loop
Frequency signal is mixed, and the medium frequency signal of output carries out frequency transformation through frequency-variable module, obtains phase precompensation signal,
Phase precompensation signal and source microwave signal carry out Frequency Transfer, by terminal by subcarrier modulation module common modulation laser instrument
Stand and recover and leach phase precompensation signal.
2. the phase precompensation module that microwave frequency signal based on optical fiber as claimed in claim 1 surely transmits mutually, its feature
It is: described frequency multiplier mixer module includes AMK-3-452 frequency tripler and ADE-35MH frequency mixer, described AMK-3-452
The frequency of stable source microwave signal is become three times by frequency tripler, and exports the local input end work to ADE-35MH frequency mixer
For local oscillation signal, the input signal of the rf inputs of described ADE-35MH frequency mixer is that the source passed through fiber optic loop passback is micro-
Ripple signal, outfan is the intermediate-freuqncy signal through mixing.
3. the phase precompensation module that microwave frequency signal based on optical fiber as claimed in claim 1 surely transmits mutually, its feature
Being: described frequency-variable module includes HMC438 five frequency divider, frequency multiplier mixer module is exported by described HMC438 five frequency divider
Intermediate-freuqncy signal five divide, and the phase precompensation signal that ratio is 0.4 of output frequency and source microwave signal frequency.
4. the phase precompensation module that microwave frequency signal based on optical fiber as claimed in claim 1 surely transmits mutually, its feature
It is: described subcarrier modulation module includes microwave combiner and JDSU X5 mach zhender light external modulator, and described is micro-
Source microwave signal and phase precompensation signal are closed road, as penetrating of JDSU X5 mach zhender light external modulator by ripple combiner
Frequently input signal, light carrier is modulated by described JDSU X5 mach zhender light external modulator, is transmitted through optical fiber by signal
To terminal use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620837278.9U CN205864427U (en) | 2016-08-04 | 2016-08-04 | The phase precompensation module that microwave frequency signal based on optical fiber surely transmits mutually |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620837278.9U CN205864427U (en) | 2016-08-04 | 2016-08-04 | The phase precompensation module that microwave frequency signal based on optical fiber surely transmits mutually |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092721A (en) * | 2017-12-26 | 2018-05-29 | 广州市捷信通科技发展有限公司 | A kind of algorithm and device that can eliminate phase error in fiber link |
| CN109286114A (en) * | 2018-09-27 | 2019-01-29 | 北京邮电大学 | Millimeter wave optical-electronic oscillator and its frequency-stabilizing method based on regenerative frequency dividing |
| CN114629554A (en) * | 2022-03-15 | 2022-06-14 | 中国科学院精密测量科学与技术创新研究院 | Frequency reference signal transmission system and method |
-
2016
- 2016-08-04 CN CN201620837278.9U patent/CN205864427U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092721A (en) * | 2017-12-26 | 2018-05-29 | 广州市捷信通科技发展有限公司 | A kind of algorithm and device that can eliminate phase error in fiber link |
| CN109286114A (en) * | 2018-09-27 | 2019-01-29 | 北京邮电大学 | Millimeter wave optical-electronic oscillator and its frequency-stabilizing method based on regenerative frequency dividing |
| CN109286114B (en) * | 2018-09-27 | 2019-09-06 | 北京邮电大学 | Millimeter wave optical-electronic oscillator and its frequency-stabilizing method based on regenerative frequency dividing |
| CN114629554A (en) * | 2022-03-15 | 2022-06-14 | 中国科学院精密测量科学与技术创新研究院 | Frequency reference signal transmission system and method |
| CN114629554B (en) * | 2022-03-15 | 2023-06-20 | 中国科学院精密测量科学与技术创新研究院 | Frequency reference signal transmission system and method |
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| 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: 20170104 Termination date: 20200804 |