CN104467967B - Microwave signal stabilized fiber phase Transmission system based on phase compensation - Google Patents
Microwave signal stabilized fiber phase Transmission system based on phase compensation Download PDFInfo
- Publication number
- CN104467967B CN104467967B CN201410564608.7A CN201410564608A CN104467967B CN 104467967 B CN104467967 B CN 104467967B CN 201410564608 A CN201410564608 A CN 201410564608A CN 104467967 B CN104467967 B CN 104467967B
- Authority
- CN
- China
- Prior art keywords
- input
- microwave signal
- frequency
- port
- phase
- 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.)
- Active
Links
Abstract
The present invention provides a kind of microwave signal stabilized fiber phase Transmission system based on phase compensation, including：One central station, a far-end and a single-mode fiber, described central station is connected with far-end by single-mode fiber, and the present invention is only processed to signal in central station, builds and maintenance cost is low；System bandwidth is larger；Steady phase can also be carried out for the larger signal of phase jitter.
Description
Technical field
The present invention relates to a kind of microwave signal stabilized fiber phase Transmission system, specifically a kind of micro- based on phase compensation
Ripple signal optical fibre steady phase Transmission system, belongs to Microwave photonics technical field.
Background technology
The steady phase transmission technology of microwave signal in distributed SAR system, survey of deep space, distribute, and the whole world is led by atomic clock
Have in the fields such as boat satellite system and be widely applied very much.Traditional microwave signal transmission is surely passed on from one to another using coaxial cable
Defeated, but cable loss is big, volume big, high cost, very difficult realize long-distance transmissions.Optical fiber is due to wide bandwidth, low-loss, anti-electricity
Magnetic disturbance, low-cost advantage, are considered to be highly suitable for the transmission of microwave signal, especially long-distance transmissions.However, by
In the impact of external environment, such as temperature, strain, vibration etc., the equivalent length of optical fiber can be led to change, through fiber-optic transfer
Signal lag changes, and then leads to the phase place of the microwave signal through fiber-optic transfer to occur to shake the side it is therefore desirable to certain
Method is realized the steady of microwave signal in optical fiber and is mutually transmitted.At present, realizing the basic thought that microwave signal surely mutually transmits is using coming and going
Delay correction eliminates phase jitter it is believed that the optical signal of opposite transmission in a fiber is separate, and its experience identical is prolonged
When, that is, phase jitter is identical, and concrete grammar can be summarized as two classes, and one is active control, is modulated at light by extracting directly
The real-time phase wobble information of the round-trip transmission in optical fiber link of the microwave signal on carrier wave, is treated using control device Active Compensation
The phase place of transmission microwave signal, so that the phase place of transmission microwave signal keeps stable, the limitation of this method is, phase place is believed
Number extraction rely primarily on Phase Lock Technique on circuit, that is, utilize phase discriminator and loop filter differential phase wobble information, pass
The bandwidth of defeated signal is very limited, in addition, when environmental change is larger, the phase jitter of transmission signal is larger, actively controls
Preparation method is difficult to realize the real-Time Compensation of phase jitter.Another kind is passive control methods, in signal transmitting terminal, has been trembled with phase place
Dynamic signal and signal waiting for transmission carry out mixing and realize signal predistortion, and the signal of predistortion is after the transmission of same link
Obtain the microwave signal of phase stabilization；Or in signal receiving end, entered by two-way is carried with the signal of same phase shake
Row is lower to be mixed, and obtains the signal of no Phase delay.At present, active control needs multiple laser instrument and phase locked microwave
Source, system is complex.(Shen.Jianguo, Wu.Guiling, Hu.Liang, " Active phase drift
cancellation for optic-fiber frequency transfer using a photonic radio-
Frequency phase shifter ", Opt.Lett., vol.36, no.8,2014.)
Content of the invention
It is an object of the invention to, provide a kind of microwave signal stabilized fiber phase Transmission system based on phase compensation, this is
System is only processed to signal in central station, builds and maintenance cost is low；System bandwidth is larger；For the letter that phase jitter is larger
Number can also carry out steady phase.
The present invention provides a kind of microwave signal stabilized fiber phase Transmission system based on phase compensation, including：One central station, one
Far-end and a single-mode fiber, described central station is connected with far-end by single-mode fiber, wherein：
Described central station includes：
One microwave signal source；
One first RF power divider, its input is connected with the outfan of microwave signal source；
One frequency eliminator, its input is connected with the output port 1 of the first RF power divider；
One second RF power divider, its input is connected with the outfan of frequency eliminator；
One first electric frequency mixer, its IF input terminal is connected with the output port 2 of the first RF power divider, its local oscillator
Input is connected with the second RF power divider output port 2；
One first band filter, its input is connected with the RF output end of the first electric frequency mixer；
One radio-frequency power blender, its input port 1 is connected with the output port 1 of the second RF power divider；
One directly modulation laser instrument, its rf inputs is connected with the outfan of radio-frequency power blender；
One first optical circulator, its input port 1 is connected with the outfan of directly modulation laser instrument；
One first photodetector, its light input end is connected with the port 3 of the first optical circulator；
One second band filter, its input is connected with the RF output end of the first photodetector；
One second electric frequency mixer, its rf inputs is connected with the outfan of the first band filter, its local oscillator input
It is connected with the outfan of the second band filter；
One the 3rd band filter, its input is connected with the medium frequency output end of the second electric frequency mixer, its outfan with penetrate
The input port 2 of frequency power mixer is connected；
Described far-end includes：
One second optical circulator；
One photo-coupler, its input port is connected with the output port 3 of the second optical circulator, its output port 2 and second
The input port 1 of optical circulator is connected；
One second photodetector, its light input end is connected with the output port 1 of photo-coupler；
One the 4th band filter, its input is connected with the RF output end of the second photodetector；
Described fiber transmission link includes single-mode fiber, and its input is connected with the port 2 of the first optical circulator, output
End is connected with the port 2 of the second optical circulator.
From technique scheme as can be seen that the invention has the advantages that：
This system is only processed to signal in central station, builds and maintenance cost is low；System bandwidth is larger；For phase place
Shake larger signal and can also carry out steady phase.
Brief description
For making the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in further detail, wherein：
Fig. 1 is the structural representation of the present invention.
Specific embodiment
Refer to Fig. 1, Fig. 1 is the structural representation of the present invention, the present invention provides a kind of letter of the microwave based on phase compensation
Number stabilized fiber phase Transmission system, this system includes：One central station A, a far-end B and a single-mode fiber 10, described central station A passes through
Single-mode fiber 9 is connected with far-end B, wherein：
Described central station includes：
One microwave signal source 1, for providing local oscillator microwave signal, this signal signal as to be transmitted；
Wherein, described microwave signal source 1 can be vector network analyzer can also be microwave signal source；
One first RF power divider 2, its input is connected with the outfan of microwave signal source 1, and it is used for will be described
The local oscillator microwave signal that microwave signal source 1 produces is divided into two-way；
One frequency eliminator 3, its input is connected with the output port 1 of the first RF power divider 2, and it is used for will wherein one
The frequency of road local oscillator microwave signal is changed into original half；
Wherein, the bandwidth of described frequency eliminator 3 is greater than the bandwidth of described microwave signal source 1, and described frequency eliminator 3 is except two
Frequency eliminator, that is, the frequency of output signal be frequency input signal half；
One second RF power divider 4, its input port is connected with the outfan of frequency eliminator 3, and it is used for after frequency elimination
Microwave signal be divided into two-way；
Wherein, the first described RF power divider 2 and the second RF power divider 4 are 50: 50 radio-frequency power
Allotter；
One first electric frequency mixer 5, its IF input terminal is connected with the output port 2 of the first RF power divider 2, its
The input that shakes is connected with the second RF power divider 4 output port 2, and the local oscillator for producing described microwave signal source 1 is micro-
The frequency elimination signal of ripple signal and frequency eliminator 3 generation carries out uppermixing, and the frequency of uppermixing signal is 3 times of described frequency elimination signal,
I.e. 1.5 times of described local oscillator microwave signal frequency；
One first band filter 6, its input is connected with the RF output end of the first electric frequency mixer 5, and it is used for filtering
Microwave local oscillation signal and frequency elimination signal that described electricity frequency mixer 5 leaks through, only uppermixing signal passes through；
One radio-frequency power blender 7, its input port 1 is connected with the output port 1 of the second RF power divider 4, its
Uppermixing signal and the microwave signal after return for exporting described first band filter 6 are mixed, and this is mixed
Signal common modulation is on directly modulation laser instrument 8；
Wherein, described radio-frequency power blender 7 is 50: 50 radio-frequency power blender；
One directly modulation laser instrument 8, its rf inputs mouth is connected with the output port of radio-frequency power blender 7, its use
In providing continuous light carrier, to transmit microwave signal；
Wherein, described directly modulation laser instrument 8 can be directly modulation laser instrument or outer adjusting laser adds tune
The combination of device processed；
One first optical circulator 9, its input port 1 is connected with the output port of directly modulation laser instrument 8, its port 2 with
Single-mode fiber 10 is connected, and port 3 is connected with the input of the first photodetector 13, and it has nonreciprocity, and light is wherein only
Can unidirectional go in ring, that is, optical signal can only from 1 port to 2 ports, then from 2 ports to 3 ports, be mutual between 1 port to 3 ports
Isolation, the described light carrier being loaded with microwave signal of 1 port input exports 2 ports, is transferred to far through single-mode fiber 10
End, returns to the port 2 of this optical circulator after the second optical circulator 11, and exports output port 3, the signal experience of return
The phase perturbation of twice；
One first photodetector 13, its light input end mouth is connected with the port 3 of the first optical circulator 9, and it is used for returning
The optical signal being loaded with microwave signal after returning is converted to the signal of telecommunication, and this signal of telecommunication is the microwave letter experiencing twice phase perturbation
Number；
One second band filter 14, its input port is connected with the radio frequency output port of the first photodetector 13, its
For filtering other beat signals, only pass through to experience the microwave signal of twice phase perturbation, the frequency of this signal is described microwave
Signal source 1 exports the half of local oscillation signal frequency, identical with the frequency of frequency elimination signal；
One second electric frequency mixer 15, its rf inputs is connected with the outfan of the first band filter 6, and its local oscillator inputs
End is connected with the outfan of the second band filter 14, and it is for the uppermixing signal that exports the first band filter 6 and the
The microwave signal comprising twice phase perturbation of two band-pass filter 14 output carries out lower mixing, the frequency of lower mixed frequency signal and institute
The local oscillator microwave signal frequency stating microwave signal source 1 generation is identical；
Wherein, to be greater than described microwave signal source 1 defeated for the bandwidth of the described first electric frequency mixer 5 and the second electric frequency mixer 15
Go out the bandwidth of local oscillation signal；
One the 3rd band filter 16, its input is connected with the medium frequency output end of the second electric frequency mixer 15, its outfan
It is connected with the input port 2 of radio-frequency power blender 7, its effect is only to pass through described lower mixed frequency signal, filters other frequencies
Microwave signal；
Described far-end includes：
One second optical circulator 11, its input port 2 is connected with single-mode fiber 10, its port 3 with photo-coupler 12
Input is connected, and its port 1 is connected with the output port 2 of photo-coupler 12, and it has nonreciprocity, and light wherein can only be unidirectional
Go in ring, that is, optical signal from 1 port to 2 ports, then from 2 ports to 3 ports, can only be mutually isolated between 1 port to 3 ports
, the light carrier being loaded with microwave signal transmitting from central station enters 2 ports, is input to 3 ports, inputs after photo-coupler 12
To 1 port, and then return to 2 ports, realize this light carrier and return to central station；
One photo-coupler 12, its input port is connected with the output port 3 of the second optical circulator 11, its output port 2 with
The input port 1 of the second optical circulator 11 is connected, and it is used for for the described light carrier being loaded with microwave signal being divided into two-way；
One second photodetector 17, its light input end is connected with the output port 1 of photo-coupler 12, and it is used for being loaded with
The optical signal of microwave signal is converted to the signal of telecommunication；
Wherein, described first photodetector 13 and the second photodetector 17 can be photodiode can also be light
Electric multiplier tube；Can be indium phosphide can also be silica-base material；
One the 4th band filter 18, its input is connected with the RF output end of the second photodetector 17, its effect
Only it is that this signal is phase place by the local oscillator microwave signal frequency identical microwave signal producing with described microwave signal source 1
Stable microwave signal；
Wherein, the bandwidth of the 3rd band filter 16 and the 4th band filter 18 is greater than described second band filter
The twice of 14 bandwidth, the bandwidth of the first band filter 6 is greater than three times of described second band filter 14 bandwidth；
Described fiber transmission link includes single-mode fiber 10, and its input is connected with the port 2 of the first optical circulator 9,
Outfan is connected with the port 2 of the second optical circulator 11, carries microwave signal for transmission light.
Assume that the microwave local oscillation signal that central station microwave signal source 1 exports isWherein ωRFFor angular frequency,For initial phase, the first RF power divider 2 is classified as two-way, and a road enters frequency eliminator 3, and the signal of output is, through the second RF power divider 4, a road is mixed through first with local oscillator microwave signal for this frequency elimination signal
Frequency device 5 carries out uppermixing, and the microwave signal obtaining isAnother road frequency elimination signal loading is to directly modulation
On laser instrument 8, it is transmitted in single-mode fiber, and return to central station it is assumed that the time delay of one-way transmission is τ in optical fiber, then
This microwave signal experienced time delay 2 τ of twice, and the first photodetector 13 carries out opto-electronic conversion to it, through the 3rd bandpass filtering
The microwave signal obtaining after device 14 isThis signal and uppermixing signal carry out lower mixed
The microwave signal that obtains of frequency isThis signal modulation is transmitted on directly modulation laser instrument 8,
The microwave signal that far-end receives after the 2nd photodetector 17 and the 4th band filter 18 isWith center
The microwave signal initial phase launched of standing is identical, realizes microwave signal and surely mutually transmits.
Particular embodiments described above, has carried out detailed further to the purpose of the present invention, technical scheme and beneficial effect
Describing in detail bright it should be understood that the foregoing is only the specific embodiment of the present invention, being not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement done etc., should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. a kind of microwave signal stabilized fiber phase Transmission system based on phase compensation, including：One central station, a far-end and a single mode
Optical fiber, described central station is connected with far-end by single-mode fiber, wherein：
Described central station includes：
One microwave signal source；
One first RF power divider, its input is connected with the outfan of microwave signal source；
One frequency eliminator, its input is connected with the output port 1 of the first RF power divider；
One second RF power divider, its input is connected with the outfan of frequency eliminator；
One first electric frequency mixer, its IF input terminal is connected with the output port 2 of the first RF power divider, and its local oscillator inputs
End is connected with the second RF power divider output port 2；
One first band filter, its input is connected with the RF output end of the first electric frequency mixer；
One radio-frequency power blender, its input port 1 is connected with the output port 1 of the second RF power divider；
One directly modulation laser instrument, its rf inputs is connected with the outfan of radio-frequency power blender；
One first optical circulator, its input port 1 is connected with the outfan of directly modulation laser instrument；
One first photodetector, its light input end is connected with the port 3 of the first optical circulator；
One second band filter, its input is connected with the RF output end of the first photodetector；
One second electric frequency mixer, its rf inputs is connected with the outfan of the first band filter, its local oscillator input and the
The outfan of two band-pass filter is connected；
One the 3rd band filter, its input is connected with the medium frequency output end of the second electric frequency mixer, its outfan and radio frequency work(
The input port 2 of rate blender is connected；
Described far-end includes：
One second optical circulator；
One photo-coupler, its input port is connected with the output port 3 of the second optical circulator, its output port 2 and second ring of light
The input port 1 of row device is connected；
One second photodetector, its light input end is connected with the output port 1 of photo-coupler；
One the 4th band filter, its input is connected with the RF output end of the second photodetector；
Fiber transmission link includes single-mode fiber, and its input is connected with the port 2 of the first optical circulator, outfan and the second light
The port 2 of circulator is connected.
2. the microwave signal stabilized fiber phase Transmission system based on phase compensation according to claim 1, wherein said microwave
Signal source is vector network analyzer.
3. the microwave signal stabilized fiber phase Transmission system based on phase compensation according to claim 1, wherein said frequency elimination
The band of device is wider than the bandwidth of described microwave signal source, and described frequency eliminator is the frequency eliminator except two, i.e. the frequency of output signal
Half for frequency input signal.
4. the microwave signal stabilized fiber phase Transmission system based on phase compensation according to claim 1, wherein said
One RF power divider and the second RF power divider are 50: 50 RF power divider.
5. the microwave signal stabilized fiber phase Transmission system based on phase compensation according to claim 1, wherein said
The band of one electric frequency mixer and the second electric frequency mixer is wider than the bandwidth that described microwave signal source exports local oscillation signal.
6. the microwave signal stabilized fiber phase Transmission system based on phase compensation according to claim 1, wherein said penetrates
Frequency power mixer is 50: 50 radio-frequency power blender.
7. the microwave signal stabilized fiber phase Transmission system based on phase compensation according to claim 1, wherein said first
Photodetector and the second photodetector are photodiode or photomultiplier tube；This first photodetector and the second photoelectricity
The material of detector is indium phosphide or silica-base material.
8. the microwave signal stabilized fiber phase Transmission system based on phase compensation according to claim 1, the wherein the 3rd band logical
The band of wave filter and the 4th band filter is wider than the twice of described second band filter bandwidth, the first band filter
Band is wider than three times of described second band filter bandwidth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564608.7A CN104467967B (en) | 2014-10-21 | 2014-10-21 | Microwave signal stabilized fiber phase Transmission system based on phase compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564608.7A CN104467967B (en) | 2014-10-21 | 2014-10-21 | Microwave signal stabilized fiber phase Transmission system based on phase compensation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104467967A CN104467967A (en) | 2015-03-25 |
| CN104467967B true CN104467967B (en) | 2017-03-01 |
Family
ID=52913422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410564608.7A Active CN104467967B (en) | 2014-10-21 | 2014-10-21 | Microwave signal stabilized fiber phase Transmission system based on phase compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104467967B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821850B (en) * | 2015-04-09 | 2017-07-14 | 中国科学院半导体研究所 | Utilize the device of optical-electronic oscillator active calibration optical fiber transmission microwave signal phase |
| CN104967483B (en) * | 2015-06-29 | 2017-07-04 | 北京无线电计量测试研究所 | A kind of bicyclic high-precision optical fiber Frequency Transfer device |
| CN106597362B (en) * | 2016-11-28 | 2019-11-08 | 北京无线电测量研究所 | A kind of signal phase synchronizing device and method for radar base station |
| CN106877930B (en) * | 2017-01-11 | 2019-02-26 | 中国科学院上海光学精密机械研究所 | High-precision optical fiber frequency Transmission system |
| CN107425915B (en) * | 2017-08-03 | 2019-08-30 | 上海交通大学 | Active optical fiber microwave frequency transmission system in high precision |
| CN108494489A (en) * | 2018-03-27 | 2018-09-04 | 电子科技大学 | A kind of radiofrequency signal surely mutually transmits device and method |
| CN109525317B (en) * | 2018-12-11 | 2021-07-16 | 中国航空工业集团公司济南特种结构研究所 | Reference signal transmission device for testing electrical performance of antenna housing |
| CN110995358B (en) * | 2019-12-13 | 2021-04-06 | 南京航空航天大学 | Microwave phase shifting method and device and high-stability photo-generated microwave source |
| CN113676262B (en) * | 2021-07-14 | 2022-07-26 | 北京航空航天大学 | Signal remote transmission phase stabilization system based on injection locking photoelectric oscillator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501199A (en) * | 2013-09-30 | 2014-01-08 | 中国人民解放军理工大学 | Phase control device and phase control device for phase-stabilized transmission of radio-frequency signal |
| CN103716089A (en) * | 2013-12-26 | 2014-04-09 | 南京航空航天大学 | RF signal optical fiber phase-stabilized transmission method and system |
| CN104065416A (en) * | 2014-06-26 | 2014-09-24 | 中国科学院半导体研究所 | Microwave signal optical fiber stationary phase transmission system based on microwave phase shifter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020005971A1 (en) * | 2000-06-21 | 2002-01-17 | Hiroyuki Sasai | Radio-frequency transmitter with function of distortion compensation |
| JP4849683B2 (en) * | 2007-08-30 | 2012-01-11 | 大学共同利用機関法人自然科学研究機構 | High frequency signal light transmission system and high frequency signal light transmission method |
-
2014
- 2014-10-21 CN CN201410564608.7A patent/CN104467967B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501199A (en) * | 2013-09-30 | 2014-01-08 | 中国人民解放军理工大学 | Phase control device and phase control device for phase-stabilized transmission of radio-frequency signal |
| CN103716089A (en) * | 2013-12-26 | 2014-04-09 | 南京航空航天大学 | RF signal optical fiber phase-stabilized transmission method and system |
| CN104065416A (en) * | 2014-06-26 | 2014-09-24 | 中国科学院半导体研究所 | Microwave signal optical fiber stationary phase transmission system based on microwave phase shifter |
Non-Patent Citations (2)
| Title |
|---|
| Active phase drift cancellation for optic-fiber frequency transfer using a photonic radio-frequency phase shifter;Jianguo Shen, et al.,;《OPTICS LETTERS》;20140415;第39卷(第8期);全文 * |
| 光纤稳相微波频率传输中相干瑞利噪声的影响与抑制;常乐 等，;《光学学报》;20120531;第32卷(第5期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104467967A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104467967B (en) | Microwave signal stabilized fiber phase Transmission system based on phase compensation | |
| CN104065416B (en) | Based on the microwave signal stabilized fiber phase transmission system of microwave phase shifter | |
| CN104202090B (en) | The microwave signal long-distance optical fiber steady phase transmitting device of optically-based phase conjugation | |
| CN103716089B (en) | A kind of radiofrequency signal stabilized fiber phase transmission method and system | |
| CN106603158B (en) | High-precision distribution type fiber-optic Frequency Transfer method | |
| CN103051385A (en) | Integral wired-wireless optical fiber asymmetric full-duplex access method and system | |
| CN107911173B (en) | High-precision optical fiber microwave frequency transmission system | |
| CN105141365A (en) | Device and method for getting delay jitter of optical fiber link | |
| CN101667983A (en) | Generating method of modulating signal and transmission equipment | |
| CN104168064B (en) | A kind of microwave signal stabilized fiber phase transmitting device based on round phasing | |
| CN106532421B (en) | More microwave local oscillator generation systems of double mode-locked laser based on optical phase-locked loop | |
| CN106301576B (en) | A kind of steady phase transmission method of multi-frequency multiple spot microwave optical fiber based on passive phase correction | |
| CN103780312B (en) | The steady phase transmission method of radiofrequency signal and system | |
| CN107682087A (en) | A kind of steady phase transmission method of microwave optical fiber for eliminating local oscillator leakage in passive phase correction | |
| CN102882472A (en) | Photon type frequency down-conversion device and method | |
| CN103595477A (en) | Method and device for carrying out up-conversion on data signals | |
| CN204886978U (en) | Equal 36 adjustable frequency -doubled signal generating device of no filtering compensation suppressed carrier system | |
| CN104168063B (en) | A kind of microwave signal stabilized fiber phase transmitting device based on wavelength recycling | |
| CN106899355B (en) | Full light technology microwave receiving system and method | |
| CN104181748A (en) | Microwave pulse signal generating device based on light-operated nonlinear annular mirror | |
| CN113346950B (en) | Broadband radio frequency signal optical fiber phase-stabilizing transmission system device | |
| CN105049124B (en) | Double hairs suitable for DDO-OFDM are the same as collecting/transmitting system and its transmitting terminal | |
| CN106159639A (en) | A kind of broad tuning optoelectronic hybrid oscillator and microwave signal generate method | |
| CN104821850B (en) | Utilize the device of optical-electronic oscillator active calibration optical fiber transmission microwave signal phase | |
| CN104051934B (en) | Optoelectronic oscillator and method based on electrical loop filtering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |