CN108448252A - A kind of big bandwidth, wide-angle, continuous scanning optically controlled phased array antennas reception device and method - Google Patents
A kind of big bandwidth, wide-angle, continuous scanning optically controlled phased array antennas reception device and method Download PDFInfo
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- CN108448252A CN108448252A CN201810135558.9A CN201810135558A CN108448252A CN 108448252 A CN108448252 A CN 108448252A CN 201810135558 A CN201810135558 A CN 201810135558A CN 108448252 A CN108448252 A CN 108448252A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2676—Optically controlled phased array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2682—Time delay steered arrays
Abstract
The invention discloses a kind of big bandwidth, wide-angle, continuous scanning optically controlled phased array antennas reception device and methods, belong to microwave photon technology field.The device and method constitutes the continuous regulation and control subelement of delay using the cascade micro-loop of antiresonance work, the waveguide for switching different length using photoswitch constitutes the discrete regulation and control subelement that is delayed, and the light delay unit that the two combination is constituted is big bandwidth, the reception of wide-angle, the phased array antenna microwave signal of continuous scanning provides required compensation of delay.The opto-electronic conversion that antenna receive microwave signal is realized using electric light phase-modulation, is avoided the use of Bias point control circuit, simplifies system structure.Requirement to delay unit bandwidth is reduced using the filtering of optics single-side belt, common-mode noise is effectively reduced using differential balance photodetection, improves the performance of system.
Description
Technical field
The invention belongs to microwave photon technology field, it is related to a kind of big bandwidth, wide-angle, continuous scanning Optically controlled microwave day
Line reception device and method.
Background technology
The aperture effect and cross that optically controlled phased array antennas can overcome traditional phased array antenna based on electric phase-shifter intrinsic
The more limitation of time has significant advantage, in new generation of wireless communication technology etc. in terms of realizing big bandwidth, wide-angle scanning
Field has broad application prospects.In practical applications, especially in microwave signal receive process, optically controlled phased array antennas
Signal reception should be able to be carried out without space blind area within the scope of the receiving angle of bigger, this requires in optically controlled phased array antennas
Light delay unit can either provide sufficiently large compensation of delay amount, and can carry out continuous scanning to amount of delay.
(king builds first technology [1], Cai Haiwen, Hou Peipei, receipts of the king book nanmu based on micro optical element storehouse integrated technology
The integrated broadband optically controlled phased array antennas of hair, photon journal, volume 2015,44, o. 11th, 1125002) in, it has studied and is based on
The Optically controlled microwave scheme of prism group micro optical element generates light delay by adjusting the distance between adjacent ribs microscope group, comes real
The scanning of existing beam pointing-angle.Although the quasi-continuous scanning of wave beam may be implemented in the program, its system is by many micro-optics member
Part storehouse is constituted, complicated, volume is big, power consumption is high.
First technology [2] (the control technology of the light-operated phased-array radar of Li Shuguang, Yao Qinglu, Liu Yu, Xue Feng wavelength-division multiplex
Radio engineering, volume 2015,45, the 4th phase, pp.60-64) in, it has studied and wavelength-division multiplex reflected light path is switched based on photoswitch
The Optically controlled microwave scheme of delay, each array element is corresponding with a wavelength of wavelength-division multiplex, and each channel of wavelength-division multiplex uses
The delay line of Backward modes, in channel delay line tail end using faraday rotation mirror as speculum, wavelength division multiplexing access
Between fiber lengths according to arithmetic progression be incremented by.The program can only realize discrete scanning, and with the increase of bay number,
Required number of wavelengths and wavelength division multiplexing access number also accordingly increases, this is by the complexity for the system that greatly increases.
First technology [3] (Li Lin, Wu Peng give birth to Optically controlled microwave wave beams and receive network, modern radar, volume 2017,39,
10th phase, pp.72-75) in, the Optically controlled microwave scheme based on fibre-optical dispersion delay strategy is had studied, using optical fiber to difference
The effect of dispersion of wavelength optical carrier realizes the delay in area of light to Multi-channel microwave signal.By the wavelength for controlling light carrier
Interval can obtain the equally spaced time delay between Multi-channel microwave signal, form beam position；Switched by photoswitch
Different length dispersive optical fiber realizes beam scanning.The program can only equally realize discrete scanning, and with bay number
Increase, required number of wavelengths also accordingly increases, this is by the complexity for the system that greatly increases.
Therefore, above-mentioned Optically controlled microwave reception technique scheme or there are the deficiencies that complicated, volume is big, power consumption is high, or
Person can only realize discrete scanning, it is difficult to realize the limitations such as the expanded application of extensive antenna array.
Invention content
A kind of big bandwidth of present invention offer, wide-angle, continuous scanning optically controlled phased array antennas reception device and method, effectively
It solves to be difficult to meet simultaneously in background technology and is difficult to realize continuous scanning, complicated be difficult to realize the extension of extensive antenna array and answer
The problems such as using.
Technical solution is used by the present invention solves the above problems：
The Optically controlled microwave connects antenna receiving apparatus：Single wavelength lasing light emitter, image intensifer, 1 × (M+1) luminous power point
Road device, electrooptic switching element, light delay unit, 1 × N luminous powers combiner, 1 × M luminous powers combiner, optics sideband filter
With difference photoelectric detection unit.
The Single wavelength lasing light emitter, image intensifer, 1 × (M+1) optical power divider, electrooptic switching element, light delay are single
Member, 1 × N luminous powers combiner, 1 × M luminous powers combiner, optics sideband filter and difference photoelectric detection unit pass through optical fiber
Or optical waveguide is sequentially connected.
The microwave optical modulations of the electrooptic switching element are electric light phase-modulation.
The light delay unit includes the continuous regulation and control subelement of delay and the discrete regulation and control subelement that is delayed.Delay is continuous to adjust
It is in series by Q delay waveguide micro-loop to control subelement, Q=1,2,3, delay waveguide micro-loop are operated in anti-humorous
It shakes state, the bandwidth limitation for overcoming micro-loop to be delayed is realized in 0~Δ τ0Be delayed continuous scanning function in range.Be delayed discrete tune
Control subelement is followed in series to form by 21 × 2 photoswitches, P 2 × 2 photoswitches, and the two-way up and down of adjacent connection photoswitch prolongs
The time difference is 2P-1Δ τ, P=1,2,3 are realized in Δ τ~(2P- 1) within the scope of Δ τ with step delta τ into line delay
Scanning, obtains big delayed sweep function, and have Δ τ0≥Δτ。
The Single wavelength lasing light emitter, the wavelength of output light wave are in the waveguide micro-loop of the continuous controllable subelement of delay
At antiresonance wavelength.
Light delay unit OTTD-11, OTTD-12, OTTD-13 ... OTTD-1N realizes the pitching of the 1st array member
Angle scanning, the signal of light delay unit OTTD-11, OTTD-12, OTTD-13 ... OTTD-1N outputs is through one 1 × N light work(
Enter light delay unit OTTD-1 after the combining of rate combiner；Described light delay unit OTTD-21, OTTD-22, the OTTD-
23 ... OTTD-2N realize the pitch angle scanning of the 2nd array member, light delay unit OTTD-21, OTTD-22, OTTD-
The signal of 23 ... OTTD-2N outputs enters light delay unit OTTD-2 after the combining of 21 × N luminous power combiners；It is described
Light delay unit OTTD-31, OTTD-32, OTTD-33 ... OTTD-3N realize that the pitch angle of the 3rd array member scans, light
The signal of delay unit OTTD-31, OTTD-32, OTTD-33 ... OTTD-3N outputs is closed through 31 × N luminous power combiners
Enter light delay unit OTTD-3 behind road；Light delay unit OTTD-M1, OTTD-M2, OTTD-M3 ... OTTD-MN is real
The pitch angle scanning of existing m column array element, light delay unit OTTD-M1, OTTD-M2, OTTD-M3 ... OTTD-MN outputs
Signal enters light delay unit OTTD-M after the combining of M 1 × N luminous power combiners；
Light delay unit OTTD-1, OTTD-2, OTTD-3 ... OTTD-M realizes the 1st array member, the 2nd row respectively
The level angle scanning of array element, the 3rd array member ... m column array element, light delay unit OTTD-1, OTTD-2, OTTD-3 ...
The signal of OTTD-M outputs enters optics sideband filter after the combining of 1 × M luminous power combiners；
The light that the optics sideband filter gating is exported through 1 × M luminous power combiners carries a side of microwave signal
Band, i.e. left side band or the right band；
The light delay unit only carries the left side band of microwave signal to light or the right band provides compensation of delay；
The difference photoelectric detection unit includes 2 × 2 optocoupler co-shunt subelements and balances photodetection subelement, real
Now light carries the differential balance photodetection of microwave left side band or the right band and light carrier, exports target microwave signal.
A kind of big bandwidth, wide-angle, continuous scanning optically controlled phased array antennas method of reseptance, steps are as follows：
It is f that Single wavelength lasing light emitter, which sends out frequency,CLight carrier through image intensifer carry out power amplification after enter 1 × (M+1)
Optical power divider, the 1st branch, the 2nd branch, the 3rd branch ... M branch light carriers after branch are transmitted separately to the 1st row
Array element, the 2nd array are first, the 3rd array is first ... the corresponding electrooptic switching element of m column array element；Each day in M N array antenna
The microwave signal that linear array member receives is modulated to light carrier f through electrooptic switching elementCOn, modulation system is electric light phase-modulation, defeated
Light extraction carries microwave signal；
Light delay unit OTTD-11, OTTD-12, OTTD-13 ... OTTD-1N realizes that the corresponding light of the 1st array member carries
The pitch angle of microwave signal scans；The roads the N light of output carries microwave signal and enters light through the combining of one 1 × N luminous power combiners
Delay unit OTTD-1；Light delay unit OTTD-1 realizes the level angle scanning of the 1st array member；
It is micro- that light delay unit OTTD-21, OTTD-22, OTTD-23 ... OTTD-2N realize that the corresponding light of the 2nd array member carries
The pitch angle of wave signal scans；The roads the N light of output, which carries microwave signal and is combined into light through 21 × N luminous power combiners, to be prolonged
Shi Danyuan OTTD-2；Light delay unit OTTD-2 realizes the level angle scanning of the 2nd array member；
It is micro- that light delay unit OTTD-31, OTTD-32, OTTD-33 ... OTTD-3N realize that the corresponding light of the 3rd array member carries
The pitch angle of wave signal scans；The roads the N light of output, which carries microwave signal and is combined into light through 31 × N luminous power combiners, to be prolonged
Shi Danyuan OTTD-3；Light delay unit OTTD-3 realizes the level angle scanning of the 3rd array member；
……
It is micro- that light delay unit OTTD-M1, OTTD-M2, OTTD-M3 ... OTTD-MN realize that the corresponding light of m column array element carries
The pitch angle of wave signal scans；The roads the N light of output, which carries microwave signal and is combined into light through M 1 × N luminous power combiners, to be prolonged
Shi Danyuan OTTD-M；Light delay unit OTTD-M realizes the level angle scanning of m column array element；
The roads the M light of light delay unit OTTD-1, OTTD-2, OTTD-3 ... OTTD-M outputs carries microwave signal through 1 × M light
Enter optics sideband filter after the combining of power combiner device, optics sideband filter gated optical carries the left side band f of microwave signalC-
fRFOr the right band fC+fRF；
The light of optics sideband filter output carries mlcrowave single sideband signal fC-fRFOr fC+fRFWith 1 × (M+1) luminous power point
(M+1) branch light carrier f after the device branch of roadCInto difference photoelectric detection unit；2 × 2 in difference photoelectric detection unit
Optocoupler combiner-divider carries mlcrowave single sideband signal f to lightC-fRFOr fC+fRFWith light carrier fCCarry out coupling branch, then respectively into
Enter to balance two light input ports of photodetector；Photodetector 1 and photodetector 2 in balance photodetector divide
Not carry out difference opto-electronic conversion, the microwave signal of generation subtracts each other elimination common-mode noise through circuit, finally exports target microwave signal；
The discrete regulation and control subelement of delay in light delay unit is in Δ τ~(2P- 1) prolonged with step delta τ within the scope of Δ τ
When scan, the continuous regulation and control subelement that is delayed is in 0~Δ τ0Continuous delayed sweep is carried out in range, by regulate and control light delay unit come
Pitch angle scanning and the level angle scanning for carrying out M N array bay, are realized to big bandwidth, wide-angle, continuous scanning
Microwave signal receive capabilities.
The beneficial effects of the invention are as follows：
(1) a kind of big bandwidth of the present invention, wide-angle, continuous scanning optically controlled phased array antennas reception device and method, delay
Continuous regulation and control subelement is made of the cascade micro-loop being operated under antiresonance state, can provide big bandwidth, low-loss, delay company
Continuous scanning function；The waveguide that discrete regulation and control subelement is switched different length by photoswitch that is delayed is constituted, and can provide big delay
Total amount；The light delay unit that the two combination is constituted may be implemented big bandwidth, wide-angle, the microwave signal of continuous scanning and receive work(
Energy.
(2) a kind of big bandwidth of the present invention, wide-angle, continuous scanning optically controlled phased array antennas reception device and method, use
Electric light phase-modulation realizes the opto-electronic conversion of antenna receive microwave signal, avoids usual Mach-Zehnder electro-optic intensity modulator
Necessary Bias point control circuit, simplifies system structure, for the simplification advantage of extensive optically controlled phased array antennas system
It is more prominent.
(3) a kind of big bandwidth of the present invention, wide-angle, continuous scanning optically controlled phased array antennas reception device and method, use
Optics sideband filter gates a sideband of microwave light modulating signal, and delay unit only need to provide compensation of delay to the sideband,
Reduce the requirement to delay unit bandwidth；Microwave signal recovery is carried out using differential balance photodetection, can effectively be reduced altogether
Mode noise, the performance of lifting system.
Description of the drawings
Fig. 1 is big bandwidth, wide-angle, continuous scanning optically controlled phased array antennas reception device block diagram of the invention.
Fig. 2 is light delay unit structure diagram.
Fig. 3 is difference photoelectric detection unit structure diagram.
Fig. 4 (a) is that the light before entering optics sideband filter carries microwave signal spectrum diagram.
Fig. 4 (b) is that the filter response curve of optics sideband filter carries the correspondence of microwave spectrum with light.
Fig. 4 (c) is that the light after optics sideband filter carries microwave signal spectrum diagram.
Fig. 5 is schematic symbol diagram in figure.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings and examples.
Optically controlled phased array antennas reception device and method of the present invention have to be carried for the microwave signal reception of M × N aerial arrays
For big bandwidth, wide-angle, the function of continuous scanning.
Fig. 1 is a kind of big bandwidth of the present invention, wide-angle, continuous scanning optically controlled phased array antennas reception device block diagram.The light
Controlling phased array antenna reception device includes：Single wavelength lasing light emitter, image intensifer, 1 × (M+1) optical power divider, electro-optic conversion
Unit, light delay unit, 1 × N luminous powers combiner, 1 × M luminous powers combiner, optics sideband filter, difference photodetection
Unit passes sequentially through optical fiber or optical waveguide connection.
The microwave optical modulations of electrooptic switching element are electric light phase-modulation.EOM-11 in Fig. 1, EOM-12, EOM-
13, EOM-1N is the corresponding Electro-optical Modulation unit of the 1st array member；EOM-21, EOM-22, EOM-
23, EOM-2N is the corresponding Electro-optical Modulation unit of the 2nd array member；EOM-31, EOM-32, EOM-
33, EOM-3N is the corresponding Electro-optical Modulation unit of the 3rd array member；, EOM-M1,
EOM-M2, EOM-M3, EOM-MN is the corresponding Electro-optical Modulation unit of m column array element.
OTTD-11, OTTD-12, OTTD-13 in Fig. 1, OTTD-1N is that the 1st array member is right respectively
The light delay unit answered；OTTD-21, OTTD-22, OTTD-23, OTTD-2N is that the 2nd array member is right respectively
The light delay unit answered；OTTD-31, OTTD-32, OTTD-33, OTTD-1N is that the 3rd array member is right respectively
The light delay unit answered；, OTTD-M1, OTTD-M2, OTTD-M3, OTTD-MN is M
The corresponding smooth delay unit of array member.Above-mentioned smooth delay unit array provides delay for the pitching scanning of antenna beam and mends
It repays, referred to as pitching scans light delay unit array.
OTTD-1, OTTD-2, OTTD-3 in Fig. 1, OTTD-M is respectively the 1st row, and the 2nd arranges, and the 3rd
Row, the corresponding smooth delay unit of m column bay.Above-mentioned smooth delay unit array is antenna beam
Horizontal sweep provides compensation of delay, referred to as horizontal sweep light delay unit array.
Fig. 2 is light delay unit structure diagram, including the continuous regulation and control subelement of delay and the discrete regulation and control subelement that is delayed.Prolong
Shi Lianxu regulation and control subelements are in series by Q delay waveguide micro-loop, Q=1, and 2,3, realize in 0~Δ τ0
Be delayed continuous scanning function in range.The discrete regulation and control subelement that is delayed is gone here and there successively by 21 × 2 photoswitches, P 2 × 2 photoswitches
Connection is constituted, and the delay inequality of two-way up and down of adjacent connection photoswitch is 2P-1Δ τ, P=1,2,3, realize in Δ τ
~(2P- 1) delayed sweep is carried out with step delta τ within the scope of Δ τ, obtains big delayed sweep function.And there is Δ τ0≥Δτ。
Fig. 3 is a point photodetection cellular construction block diagram, including 2 × 2 optocoupler co-shunt subelements and balance photodetection
Unit.
It is f that Single wavelength lasing light emitter, which sends out frequency,CLight carrier through image intensifer carry out power amplification after enter 1 × (M+1)
Optical power divider, the 1st branch after branch, the 2nd branch, the 3rd branch ... ..., M branch light carriers are transmitted separately to the 1st
Array member, the 2nd array member, the 3rd array member ... ..., the corresponding electrooptic switching element of m column array element.It is every in M N array antenna
The microwave signal that a bay receives is modulated to light carrier f through electrooptic switching elementCOn, modulation system is electric light phase tune
System, output light carry microwave signal.
Light carries microwave signal and enters pitching scanning light delay unit array, which is pitch orientation big angle
The microwave signal of degree, which receives, provides compensation of delay.The light that pitching scans the output of light delay unit array carries microwave signal respectively through 1
The combining of × N luminous power combiners enters horizontal sweep light delay unit array (OTTD-1, OTTD-2, OTTD-3 ... ..., OTTD-
M), which provides compensation of delay for the microwave signal reception of horizontal direction wide-angle.
The light of horizontal sweep light delay unit array output carries microwave signal and enters after the combining of 1 × M luminous power combiners
Optics sideband filter.
Fig. 4 is the spectrum diagram of optics sideband filter filtering.Fig. 4 (a) be enter optics sideband filter it
Preceding light carries microwave signal spectrum diagram；Fig. 4 (b) is that the filter response curve of optics sideband filter and light carry microwave spectrum
Correspondence；Fig. 4 (c) is that the light after optics sideband filter carries microwave signal spectrum diagram.It can be seen that optics side
Band filter has gated the left side band f that light carries microwave signalC-fRF。
The light of optics sideband filter output carries mlcrowave single sideband signal fC-fRFWith 1 × (M+1) optical power divider branch
(M+1) branch light carrier f afterwardsCInto difference photoelectric detection unit.2 × 2 photo-couplers in difference photoelectric detection unit
Mlcrowave single sideband signal f is carried to lightC-fRFWith light carrier fCCoupling branch is carried out, balance photodetector is then respectively enterd
Two light input ports；Photodetector 1 and photodetector 2 in balance photodetector carry out difference photoelectricity and turn respectively
It changes, the microwave signal of generation subtracts each other elimination common-mode noise through circuit, finally exports target microwave signal.
The discrete regulation and control subelement of delay in light delay unit is in Δ τ~(2P- 1) prolonged with step delta τ within the scope of Δ τ
When scan, the continuous regulation and control subelement that is delayed is in 0~Δ τ0Continuous delayed sweep is carried out in range, by regulate and control light delay unit come
Pitch angle scanning and the level angle scanning for carrying out M N array bay, are realized to big bandwidth, wide-angle, continuous scanning
Microwave signal receive capabilities.
Claims (2)
1. a kind of big bandwidth, wide-angle, continuous scanning optically controlled phased array antennas reception device, which is characterized in that the light-operated phase
Control battle array connects antenna receiving apparatus and includes：Single wavelength lasing light emitter, image intensifer, 1 × (M+1) optical power divider, electrooptic switching element,
Light delay unit, 1 × N luminous powers combiner, 1 × M luminous powers combiner, optics sideband filter and difference photodetection list
Member；
The Single wavelength lasing light emitter, image intensifer, 1 × (M+1) optical power divider, electrooptic switching element, light delay unit, 1
× N luminous powers combiner, 1 × M luminous powers combiner, optics sideband filter, difference photoelectric detection unit pass through optical fiber or light
Waveguide is sequentially connected；
The microwave optical modulations of the electrooptic switching element are electric light phase-modulation；
The light delay unit includes the continuous regulation and control subelement of delay and the discrete regulation and control subelement that is delayed；Be delayed continuous regulator
Unit is in series by Q delay waveguide micro-loop, and Q=1,2,3, delay waveguide micro-loop are operated in antiresonance shape
State, the bandwidth limitation for overcoming micro-loop to be delayed, is realized in 0~Δ τ0Be delayed continuous scanning function in range；Be delayed discrete regulator
Unit is followed in series to form by 21 × 2 photoswitches, P 2 × 2 photoswitches, the two-way delay inequality up and down of adjacent connection photoswitch
It is 2P-1Δ τ, P=1,2,3 are realized in Δ τ~(2P- 1) it is swept into line delay with step delta τ within the scope of Δ τ
It retouches, obtains big delayed sweep function；And there is Δ τ0≥Δτ；
The Single wavelength lasing light emitter, the wavelength of output light wave are in the antiresonance of the waveguide micro-loop of the continuous controllable subelement of delay
At wavelength；
Light delay unit OTTD-11, OTTD-12, OTTD-13 ... OTTD-1N realizes the pitch angle of the 1st array member
The signal of scanning, light delay unit OTTD-11, OTTD-12, OTTD-13 ... OTTD-1N outputs is closed through one 1 × N luminous powers
Enter light delay unit OTTD-1 after the device combining of road；Light the delay unit OTTD-21, OTTD-22, OTTD-23 ... ...,
OTTD-2N realizes that the pitch angle of the 2nd array member scans, light delay unit OTTD-21, OTTD-22, OTTD-23 ... ...,
The signal of OTTD-2N outputs enters light delay unit OTTD-2 after the combining of 21 × N luminous power combiners；The light prolongs
Shi Danyuan OTTD-31, OTTD-32, OTTD-33 ... ..., the pitch angle scanning of OTTD-3N the 3rd array members of realization, light delay
Unit OTTD-31, OTTD-32, OTTD-33 ... ..., the signal of OTTD-3N outputs are combined through 31 × N luminous power combiners
Enter light delay unit OTTD-3 afterwards；Light delay unit OTTD-M1, OTTD-M2, OTTD-M3 ... OTTD-MN is realized
The pitch angle of m column array element scans, the letter of light delay unit OTTD-M1, OTTD-M2, OTTD-M3 ... OTTD-MN outputs
Number through M 1 × N luminous power combiners combining after enter light delay unit OTTD-M；
Light delay unit OTTD-1, OTTD-2, OTTD-3 ... OTTD-M realizes the 1st array member, the 2nd array respectively
The level angle scanning of member, the 3rd array member ... m column array element, light delay unit OTTD-1, OTTD-2, OTTD-3 ...
The signal of OTTD-M outputs enters optics sideband filter after the combining of 1 × M luminous power combiners；
The light that the optics sideband filter gating is exported through 1 × M luminous power combiners carries a sideband of microwave signal, i.e.,
Left side band or the right band；
The light delay unit only carries the left side band of microwave signal to light or the right band provides compensation of delay；
The difference photoelectric detection unit includes 2 × 2 optocoupler co-shunt subelements and balance photodetection subelement, realizes light
The differential balance photodetection of microwave left side band or the right band and light carrier is carried, target microwave signal is exported.
2. a kind of big bandwidth, wide-angle, continuous scanning optically controlled phased array antennas method of reseptance, which uses claim
Optically controlled microwave described in 1 connects antenna receiving apparatus；It is characterized in that steps are as follows：
It is f that Single wavelength lasing light emitter, which sends out frequency,CLight carrier through image intensifer carry out power amplification after enter 1 × (M+1) luminous power
Splitter, the 1st branch, the 2nd branch, the 3rd branch ... M branch light carriers after branch are transmitted separately to the 1st array member, the
2 arrays member, the 3rd array member ... the corresponding electrooptic switching element of m column array element；Each bay connects in M N array antenna
The microwave signal of receipts is modulated to light carrier f through electrooptic switching elementCOn, modulation system is electric light phase-modulation, and output light carries micro-
Wave signal；
Light delay unit OTTD-11, OTTD-12, OTTD-13 ... OTTD-1N realize that the corresponding light of the 1st array member carries microwave letter
Number pitch angle scanning；The roads the N light of output carries microwave signal and enters light delay list through the combining of one 1 × N luminous power combiners
First OTTD-1；Light delay unit OTTD-1 realizes the level angle scanning of the 1st array member；
Light delay unit OTTD-21, OTTD-22, OTTD-23 ... OTTD-2N realize that the corresponding light of the 2nd array member carries microwave letter
Number pitch angle scanning；The roads the N light of output carries microwave signal and enters light delay list through the combining of 21 × N luminous power combiners
First OTTD-2；Light delay unit OTTD-2 realizes the level angle scanning of the 2nd array member；
Light delay unit OTTD-31, OTTD-32, OTTD-33 ... OTTD-3N realize that the corresponding light of the 3rd array member carries microwave letter
Number pitch angle scanning；The roads the N light of output carries microwave signal and enters light delay list through the combining of 31 × N luminous power combiners
First OTTD-3；Light delay unit OTTD-3 realizes the level angle scanning of the 3rd array member；
……
Light delay unit OTTD-M1, OTTD-M2, OTTD-M3 ... OTTD-MN realize that the corresponding light of m column array element carries microwave letter
Number pitch angle scanning；The roads the N light of output carries microwave signal and enters light delay list through the combining of M 1 × N luminous power combiners
First OTTD-M；Light delay unit OTTD-M realizes the level angle scanning of m column array element；
The roads the M light of light delay unit OTTD-1, OTTD-2, OTTD-3 ... OTTD-M outputs carries microwave signal through 1 × M luminous powers
Enter optics sideband filter after combiner combining, optics sideband filter gated optical carries the left side band f of microwave signalC-fRFOr
The right band fC+fRF；
The light of optics sideband filter output carries mlcrowave single sideband signal fC-fRFOr fC+fRFWith 1 × (M+1) optical power divider
(M+1) branch light carrier f after branchCInto difference photoelectric detection unit；2 × 2 optocouplers in difference photoelectric detection unit
Combiner-divider carries mlcrowave single sideband signal f to lightC-fRFOr fC+fRFWith light carrier fCCoupling branch is carried out, is then respectively enterd flat
Two light input ports of weighing apparatus photodetector；Balance photodetector in photodetector 1 and photodetector 2 respectively into
The microwave signal of row difference opto-electronic conversion, generation subtracts each other elimination common-mode noise through circuit, finally exports target microwave signal；
The discrete regulation and control subelement of delay in light delay unit is in Δ τ~(2P- 1) it is swept into line delay with step delta τ within the scope of Δ τ
It retouches, the continuous regulation and control subelement that is delayed is in 0~Δ τ0Continuous delayed sweep is carried out in range, is carried out by regulating and controlling light delay unit
M N array bay pitch angle scanning and level angle scanning, realize to big bandwidth, wide-angle, continuous scanning it is micro-
Wave signal receiving function.
Priority Applications (1)
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|---|---|---|---|
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| CN113093153B (en) * | 2021-04-12 | 2022-12-30 | 中国科学院半导体研究所 | Receiving and transmitting integrated beam forming network system based on dispersion delay |
| CN113571908A (en) * | 2021-07-14 | 2021-10-29 | 北京无线电测量研究所 | Two-dimensional reconfigurable light-operated beam forming network device shared by transceiving |
| CN115167610A (en) * | 2022-09-08 | 2022-10-11 | 之江实验室 | Two-dimensional photon convolution acceleration chip and application system and method |
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