CN103501199A - Phase control device and phase control device for phase-stabilized transmission of radio-frequency signal - Google Patents
Phase control device and phase control device for phase-stabilized transmission of radio-frequency signal Download PDFInfo
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- CN103501199A CN103501199A CN201310462370.2A CN201310462370A CN103501199A CN 103501199 A CN103501199 A CN 103501199A CN 201310462370 A CN201310462370 A CN 201310462370A CN 103501199 A CN103501199 A CN 103501199A
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Abstract
The invention discloses a phase control device and a phase control device for phase-stabilized transmission of a radio-frequency signal. The phase control device comprises a central station and a remote station. The central station comprises an optical transmitting module and an FM (frequency modulation) polariscope. The remote station comprises an optical branching device, an optical receiving module I, an amplifier I, a filter I, a frequency multiplier, a filter II, a mixer, an optical circulator, an optical receiving module II, an amplifier II, a filter III and a frequency divider. The phase control method comprises the following steps of dividing an optical signal sent by the central station and modulated by the radio-frequency signal into two channels in the remote station; returning one of the two channels by the FM polariscope; inputting the two channels into the phase control device together; performing compensation of phase delay and fluctuation, and therefore directly inputting the phase-stabilized radio-frequency signal. According to the phase control device and the phase control device disclosed by the invention, the phase-stabilization precision is not limited by the precision of a measuring system, and precompensation does not need to be performed at a transmitting end. The phase control device and the phase control device are suitable for long-distance transmission and the cascade application of a plurality of remote stations.
Description
Technical field
The present invention relates to the technical field of radiofrequency signal Optical Fiber Transmission, phase place regulation device and method that particularly a kind of radiofrequency signal stabilized fiber transmits mutually.
Background technology
The demand and day huge increasing in radar system, survey of deep space network and radio frequency simulation test, radiofrequency signal surely transmitted mutually.Traditional coaxial cable transmitting radio frequency signal, transmission attenuation is large, phase stability is poor, along with the raising decay of transmission frequency is larger, can't be grown Distance Transmission.The typical loss of metallic cable is about tens dB/Km, the radiofrequency signal limited transmission distance in cable, and the thermal coefficient of expansion of metallic cable is large, 0.1-0.2 as about as the copper representative value * 10
-4m/ ℃, cause that when radiofrequency signal is transmitted in cable, phase fluctuation is large.The phase fluctuation meeting is along with the difference of cable dielectric used changes, and the polyethylene insulation phase stability is 100-200ppm/ ℃, and the teflon insulation phase stability is 50-100ppm/ ℃, and cellular insulation half flexible phase stability is 20-30ppm/ ℃.
With radio frequency cable, compare, the low-loss of optical fiber, phase stability are good, wide bandwidth, without outstanding advantages such as electromagnetic interference, for the remote steady transmission mutually that realizes radiofrequency signal, provide desirable solution route.The loss of optical fiber is less than 1dB/Km, radiofrequency signal is modulated on light wave to the long Distance Transmission that can realize radiofrequency signal.The temperature expansion coefficient of fiber optic materials is approximately 1/100 of metal, phase stability reaches 7ppm/ ℃, still can not meet major fields, as the application demand of phased array radar, very long baseline interferometry(VLBI etc., thereby the steady phase method of radiofrequency signal Optical Fiber Transmission proposes with device is numerous and confused.
Existing steady phase method, as optical fiber Round-Trip method, two-way Comparison Method and delay phase locking technique, mostly be based on the measurement radiofrequency signal and live defeated phase delay and the delay fluctuation of back pass in optical fiber, according to past, return hypothesis that time delay is equal and extrapolate One Way Delay and time delay fluctuation, carry out precompensation at radiofrequency signal transmitting terminal (central station) by circuit or optical delay line, thereby obtain the radiofrequency signal output of phase stabilization at the receiving terminal (remote terminal) of radiofrequency signal.But past, when returning time delay hypothesis and adopting different wave length because reality comes and goes the asymmetry of link or same link, depositing of optical fiber dispersion is difficult to meet, can not provide accurate latency measurement for the compensation of making a start, thereby the precision transmitted mutually of radiofrequency signal stabilized fiber is low and system complex, can't be grown surely transmission mutually of distance.
Summary of the invention
The purpose of this invention is to provide phase place regulation device and method that a kind of high-precision radiofrequency signal stabilized fiber transmits mutually, the radiofrequency signal phase delay and the fluctuation that by compensating long Distance Transmission, cause, realize the surely transmission mutually of the long distance of radiofrequency signal.
The technical solution that realizes the object of the invention is: the phase place regulation device that a kind of radiofrequency signal stabilized fiber transmits mutually, comprise central station and remote terminal, and wherein central station comprises optical transmission module and FM polariscope, remote terminal comprises optical branching device, light receipts module
, amplifier
, filter
, frequency multiplier, filter
, frequency mixer, light annular device, light receive module
, amplifier
, filter
and frequency divider;
In central station, the optical transmission module input connects optical fiber by radio frequency cable input rf signal, output by the optical fiber connector
, the FM polariscope connects optical fiber by the optical fiber connector
;
In remote terminal, the input of optical branching device and optical fiber
connect light annular device and optical fiber
be connected; The output of optical branching device accesses respectively light and receives module
with the light annular device: wherein light is received module
with amplifier
, filter
, frequency multiplier, filter
an input of access frequency mixer after connecting in turn, light annular device and light are received module
, amplifier
, filter
another input of access frequency mixer after connecting in turn; The output access frequency divider of frequency mixer.
The phase place regulate and control method that a kind of radiofrequency signal stabilized fiber transmits mutually, carry out mixing by RF signal and its frequency tripling signal of carrying phase information, is specially:
The RF signal is input to the optical transmission module of central station, and optical transmission module completes the direct modulation of RF signal to Distributed Feedback Laser, and the light signal after modulation is by optical fiber connector input optical fibre
in; The optical branching device of remote terminal is by optical fiber
the light signal transmitted is divided into two tunnels: a road inputs to light and receives mould
convert the signal of telecommunication to, through amplifier
after amplification, send filter
the filtering unwanted signal, then send into frequency multiplier and obtain 3 frequency-doubled signals, through filter
input mixer input port after filtering; Another Lu Jingguang annular device send input optical fibre
the reflection transmission is passed the light annular device back after the reflection of the FM of central station polariscope, by light, receives module
reception converts the signal of telecommunication to, through amplifier
after amplification, send filter
the filtering unwanted signal, another input port of last input mixer; Two road signals in frequency mixer mixing and through frequency divider output the RF signal through the phase place regulation and control.
Compared with prior art, remarkable advantage of the present invention is: (1) consists of fiber optic telecommunications equipment commonly used and electronic devices and components, by the phase compensation stable phase angle, without the central station precompensation, reduced the requirement that phase fluctuation is accurately measured, and steady phase precision is not subject to the impact of measuring system; (2) the realistic application situation of whole system, realize radiofrequency signal surely transmission mutually of long distance between central station and remote terminal or a central station and a plurality of remote terminal; (3) the method has been widened the application of radiofrequency signal Optical Fiber Transmission, has accelerated its industrialization process.
The accompanying drawing explanation
Fig. 1 is the system block diagram of the phase place regulation device that transmits mutually of radiofrequency signal stabilized fiber of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
The phase place regulation device that radiofrequency signal stabilized fiber disclosed by the invention transmits mutually, its working mechanism is that light signal central station sent through the radiofrequency signal modulation at far-end is divided into two-way, wherein central station is returned on a road, through Faraday mirror (FM), return, send the phase place regulation device together with another road, phase delay and fluctuation are regulated and controled to compensation, thus the direct steady radiofrequency signal after mutually of output.Be characterized in that steady phase precision is not subject to the accuracy limitations of measuring system, without at transmitting terminal, carrying out precompensation, directly at far-end, compensates output, be applicable to long distance, a plurality of remote terminal application of the manystage cascade connection, the application situation of realistic system.
In conjunction with Fig. 1, the phase place regulation device that radiofrequency signal stabilized fiber of the present invention transmits mutually, comprise central station and remote terminal, and wherein central station comprises optical transmission module 1 and FM polariscope 2, and remote terminal comprises optical branching device 3, light receipts module
5, amplifier
7, filter
8, frequency multiplier 9, filter
12, frequency mixer 13, light annular device 4, light are received module
6, amplifier
10, filter
11 and frequency divider 14; In central station, optical transmission module 1 input connects optical fiber by radio frequency cable input rf signal, output by the optical fiber connector
, FM polariscope 2 connects optical fiber by the optical fiber connector
; In remote terminal, the input of optical branching device 3 and optical fiber
connect light annular device 4 and optical fiber
be connected; The output of optical branching device 3 accesses respectively light and receives module
5 and light annular device 4: wherein light is received module
5 and amplifier
7, filter
8, frequency multiplier 9, filter
12 connect an input of rear access frequency mixer 13 in turn, and light annular device 4 is received module with light
6, amplifier
10, filter
11 connect another input of rear access frequency mixer 13 in turn; The output access frequency divider 14 of frequency mixer 13.
Between above-mentioned central station and station far away, by optical fiber, connect, the variation that optical fiber is affected by ambient temperature, pressure etc. and causes the transmitting radio frequency signal phase place realizes compensation by the phase place regulation device.This phase place regulation device is applicable to simple optical fiber, dual wavelength transmission, also be applicable to two optical fiber, single wavelength transmission, for two Optical Fiber Transmission, the phase place regulate and control method that the radiofrequency signal stabilized fiber transmits mutually carries out the mixing realization by RF signal and its frequency tripling signal that will carry phase information, and concrete steps are as follows:
Radiofrequency signal is the optical transmission module 1 that the RF signal is input to central station, and optical transmission module 1 completes the direct modulation of RF signal to Distributed Feedback Laser, and the light signal after modulation is by optical fiber connector input optical fibre
in; The optical branching device 3 of remote terminal is by optical fiber
the light signal transmitted is divided into two tunnels: a road inputs to light and receives mould
5 convert the signal of telecommunication to, through amplifier
after 7 amplifications, send filter
8 filtering unwanted signals, then send into frequency multiplier 9 acquisition 3 frequency-doubled signals, through filter
input mixer 13 input port after 12 filtering; Another Lu Jingguang annular device 4 send input optical fibre
the reflection transmission is passed light annular device 4 back after 2 reflections of the FM of central station polariscope, by light, receives module
6 receptions convert the signal of telecommunication to, through amplifier
after 10 amplifications, send filter
11 filtering unwanted signals, another input port of last input mixer 13; Two road signals in frequency mixer 13 mixing and through frequency divider 14 output the RF signal through the phase places regulation and control.
The phase place regulation device that radiofrequency signal stabilized fiber of the present invention transmits mutually consists of fiber optic telecommunications equipment commonly used and electronic devices and components:
In central station, optical transmission module 1 adopts broadband high-speed directly to modulate Distributed Feedback Laser; FM polariscope 2 adopts the Faraday mirror;
In remote terminal, optical branching device 3 adopts 1 * 2 fiber coupler; Light annular device 4 adopts the optical fiber annular device of three ports; Light is received module
5 and light receive module
6 all adopt PIN+TIA light to receive assembly, complete light-to-current inversion; Amplifier
7 and amplifier
10 all adopt the electric amplifier that centre frequency is corresponding RF frequency; Filter
8 and filter
11 all adopt the narrow bandpass electrical filter that centre frequency is corresponding RF frequency; Frequency multiplier 9 carries out frequency multiplication three times by the signal of reception; Filter
12 adopt the narrow bandpass electrical filter that centre frequency is 3 times of corresponding RF frequencies; RF signal and frequency tripling signal thereof that frequency mixer 13 will carry phase information carry out the mixing computing.
In sum, the phase place regulation device that radiofrequency signal stabilized fiber of the present invention transmits mutually consists of fiber optic telecommunications equipment commonly used and electronic devices and components, by the phase compensation stable phase angle, without the central station precompensation, reduced the requirement that phase fluctuation is accurately measured, and steady phase precision is not subject to the impact of measuring system; The realistic application situation of whole system, realize radiofrequency signal surely transmission mutually of long distance between central station and remote terminal or a central station and a plurality of remote terminal, thereby widened the application of radiofrequency signal Optical Fiber Transmission, accelerated its industrialization process.
Claims (5)
1. the phase place regulation device that the radiofrequency signal stabilized fiber transmits mutually, is characterized in that, comprises central station and remote terminal, and wherein central station comprises optical transmission module (1) and FM polariscope (2), and remote terminal comprises optical branching device (3), light receipts module
(5), amplifier
(7), filter
(8), frequency multiplier (9), filter
(12), frequency mixer (13), light annular device (4), light are received module
(6), amplifier
(10), filter
and frequency divider (14) (11);
In central station, optical transmission module (1) input connects optical fiber by radio frequency cable input rf signal, output by the optical fiber connector
, FM polariscope (2) connects optical fiber by the optical fiber connector
;
In remote terminal, input and the optical fiber of optical branching device (3)
connect light annular device (4) and optical fiber
be connected; The output of optical branching device (3) accesses respectively light and receives module
and light annular device (4) (5): wherein light is received module
and amplifier (5)
(7), filter
(8), frequency multiplier (9), filter
(12) connect in turn an input of rear access frequency mixer (13), light annular device (4) is received module with light
(6), amplifier
(10), filter
(11) connect in turn another input of rear access frequency mixer (13); The output access frequency divider (14) of frequency mixer (13).
2. the phase place regulation device that radiofrequency signal stabilized fiber according to claim 1 transmits mutually, is characterized in that, optical transmission module in central station (1) adopts broadband high-speed directly to modulate Distributed Feedback Laser; FM polariscope (2) adopts the Faraday mirror.
3. the phase place regulation device that radiofrequency signal stabilized fiber according to claim 1 transmits mutually, is characterized in that, optical branching device in remote terminal (3) adopts 1 * 2 fiber coupler; Light annular device (4) adopts the optical fiber annular device of three ports; Light is received module
(5) and light receive module
(6) all adopt PIN+TIA light to receive assembly; Amplifier
and amplifier (7)
(10) all adopt the electric amplifier that centre frequency is corresponding RF frequency; Filter
and filter (8)
(11) all adopt the narrow bandpass electrical filter that centre frequency is corresponding RF frequency; Filter
(12) adopt the narrow bandpass electrical filter that centre frequency is 3 times of corresponding RF frequencies.
4. the phase place regulate and control method that the radiofrequency signal stabilized fiber transmits mutually, is characterized in that, RF signal and its frequency tripling signal of carrying phase information are carried out to mixing, is specially:
The RF signal is input to the optical transmission module (1) of central station, and optical transmission module (1) completes the direct modulation of RF signal to Distributed Feedback Laser, and the light signal after modulation is by optical fiber connector input optical fibre
in; The optical branching device of remote terminal (3) is by optical fiber
the light signal transmitted is divided into two tunnels: a road inputs to light and receives mould
(5) convert the signal of telecommunication to, through amplifier
(7) after amplifying, send filter
(8) filtering unwanted signal, then send into frequency multiplier (9) and obtain 3 frequency-doubled signals, through filter
(12) input port of input mixer (13) after filtering; Another Lu Jingguang annular device (4) send input optical fibre
reverse transfer is passed light annular device (4) back after the FM of central station polariscope (2) reflection, by light, receives module
(6) receive and convert the signal of telecommunication to, through amplifier
(10) after amplifying, send filter
(11) filtering unwanted signal, another input port of last input mixer (13); Two road signals in frequency mixer (13) mixing and through frequency divider (14) output the RF signal through the phase place regulation and control.
5. the phase place regulate and control method that radiofrequency signal stabilized fiber according to claim 4 transmits mutually, is characterized in that optical fiber
and optical fiber
for the two Optical Fiber Transmission of same cable.
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|---|---|---|---|
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|---|---|---|---|
| CN201310462370.2A CN103501199B (en) | 2013-09-30 | 2013-09-30 | Phase place regulation device and method that radiofrequency signal stabilized fiber transmits mutually |
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| CN103501199B CN103501199B (en) | 2016-05-18 |
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| CN103780312A (en) * | 2014-01-21 | 2014-05-07 | 南京航空航天大学 | Radio-frequency signal stable-phase 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 |
| CN104168064A (en) * | 2014-08-27 | 2014-11-26 | 中国科学院半导体研究所 | Microwave signal optical fiber stationary-phase transmission device based on back and forth phase correction |
| CN104467967A (en) * | 2014-10-21 | 2015-03-25 | 中国科学院半导体研究所 | Microwave signal optical fiber steady-phase transmission system based on phase compensation |
| CN106230511A (en) * | 2016-08-31 | 2016-12-14 | 南京恩瑞特实业有限公司 | 5G distributed base station antenna rf optical transmission method and system |
| CN106301576A (en) * | 2016-08-05 | 2017-01-04 | 西南交通大学 | A kind of multi-frequency multiple spot microwave optical fiber steady phase transmission method based on passive phase correction |
| CN107453720A (en) * | 2016-05-30 | 2017-12-08 | 宏观微电子股份有限公司 | Semiconductor chip |
| CN107682087A (en) * | 2017-09-22 | 2018-02-09 | 西南交通大学 | A kind of steady phase transmission method of microwave optical fiber for eliminating local oscillator leakage in passive phase correction |
| CN107819516A (en) * | 2017-11-24 | 2018-03-20 | 中国电子科技集团公司第四十四研究所 | Multi-channel wide band microwave optical transmission chain transmitting terminal phase stabilizing device |
| CN107994947A (en) * | 2017-11-28 | 2018-05-04 | 中国科学院国家授时中心 | The round-trip frequency conversion type optical fiber high accuracy Frequency Transfer system and method for S types |
| CN107994949A (en) * | 2017-11-24 | 2018-05-04 | 中国电子科技集团公司第四十四研究所 | Multi-channel wide band microwave optical transmission chain receiving terminal phase stabilizing device |
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| CN111934773A (en) * | 2020-08-12 | 2020-11-13 | 中国电子科技集团公司第四十四研究所 | Distributed optical fiber broadband phase-stable transmission distribution system and method based on loop topology |
| CN112260759A (en) * | 2020-11-03 | 2021-01-22 | 中航光电科技股份有限公司 | Two-way homologous phase-coherent microwave optical fiber phase-stable transmission system |
| CN112260758A (en) * | 2020-11-03 | 2021-01-22 | 中航光电科技股份有限公司 | Bidirectional homologous phase-coherent microwave optical fiber phase-stable transmission method |
| CN112367120A (en) * | 2020-10-23 | 2021-02-12 | 西北工业大学 | Microwave local oscillation source double-frequency optical fiber phase-stabilizing transmission system |
| CN114826406A (en) * | 2021-05-27 | 2022-07-29 | 中航光电科技股份有限公司 | Ultra-wideband radio frequency optical fiber phase-stabilized transmission system based on magnetic suspension technology |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008062139A1 (en) * | 2008-12-16 | 2010-06-24 | Bundesrepublik Deutschland, vertr. durch d. Bundesministerium f. Wirtschaft und Technologie, dieses vertreten durch d. Präsidenten d. Physikalisch-Technischen Bundesanstalt | Reference frequency providing method for continuous wave laser, involves transmitting light of reference laser from reference location, calculating beat frequency between lights, and determining reference frequency from beat frequency |
| CN102801469A (en) * | 2012-09-11 | 2012-11-28 | 中国人民解放军理工大学 | Optical fiber time frequency hybrid transmission method |
-
2013
- 2013-09-30 CN CN201310462370.2A patent/CN103501199B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008062139A1 (en) * | 2008-12-16 | 2010-06-24 | Bundesrepublik Deutschland, vertr. durch d. Bundesministerium f. Wirtschaft und Technologie, dieses vertreten durch d. Präsidenten d. Physikalisch-Technischen Bundesanstalt | Reference frequency providing method for continuous wave laser, involves transmitting light of reference laser from reference location, calculating beat frequency between lights, and determining reference frequency from beat frequency |
| CN102801469A (en) * | 2012-09-11 | 2012-11-28 | 中国人民解放军理工大学 | Optical fiber time frequency hybrid transmission method |
Non-Patent Citations (3)
| Title |
|---|
| SASCHA W. SCHEDIWY等: ""High-precision optical-frequency dissemination on branching optical-fiber networks"", 《OPTICS LETTERS》 * |
| YABAI HE等: ""Stable radio-frequency transfer over optical fiber by phase-conjugate frequency mixing"", 《OPTICS EXPRESS》 * |
| ZHONGLE WU等: ""Stable radio frequency phase delivery by rapid and endless post error cancellation"", 《OPTICS LETTERS》 * |
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| CN114826406A (en) * | 2021-05-27 | 2022-07-29 | 中航光电科技股份有限公司 | Ultra-wideband radio frequency optical fiber phase-stabilized transmission system based on magnetic suspension technology |
| CN114826406B (en) * | 2021-05-27 | 2024-01-09 | 中航光电科技股份有限公司 | Ultra-wideband radio frequency optical fiber stable phase transmission system based on magnetic suspension technology |
| CN116366161A (en) * | 2023-02-03 | 2023-06-30 | 华北电力大学（保定） | Optical fiber ring network radio frequency signal stable transmission system |
| CN116366161B (en) * | 2023-02-03 | 2023-11-10 | 华北电力大学（保定） | Optical fiber ring network radio frequency signal stable transmission system |
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