CN105471467B - A kind of restructural radio frequency front-end device for supporting channels share - Google Patents
A kind of restructural radio frequency front-end device for supporting channels share Download PDFInfo
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- CN105471467B CN105471467B CN201610009293.9A CN201610009293A CN105471467B CN 105471467 B CN105471467 B CN 105471467B CN 201610009293 A CN201610009293 A CN 201610009293A CN 105471467 B CN105471467 B CN 105471467B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
- H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
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Abstract
The invention discloses a kind of restructural radio frequency front-end devices for supporting channels share, including：Receiver Module, for receiving radiofrequency signal；Optical modulator module carries radiofrequency signal for carrying out light modulation to the radiofrequency signal to generate light；Light carries local oscillator module, and local oscillation signal is carried for generating light corresponding with light load radiofrequency signal；Full light frequency-variable module, for carrying radiofrequency signal and light load local oscillation signal progress beat frequency to the light to generate the light load mixed frequency signal of intermediate frequency；All-optical switching module carries out signal exchange to export the light information carrying number of specific wavelength combination for carrying mixed frequency signal to the light；Intermediate frequency output module, for carrying out opto-electronic conversion to the smooth information carrying number to generate intermediate-freuqncy signal.Compared with prior art, the device of the invention it is small, it is low in energy consumption, have higher signal bandwidth；Meanwhile the apparatus according to the invention can be with simple transformation signal exchange pattern, to meet multi-functional, multiband switching requirement.
Description
Technical field
The present invention relates to the communications fields, in particular relate to a kind of restructural radio frequency front-end device for supporting channels share.
Background technology
In the prior art, traditional radio-frequency front-end is handled radio frequency (RF) signal using electronic device.It is main
Principle is to be then converted into the intermediate frequency (IF) of lower frequency by two level even multistage frequency conversion.It is this superhet complicated,
Not only there is Image interference, and needs high quality factor (Q values), bulky IF filters.So that system complex
Change, leads to integrated difficulty.One of alternative solution of above-mentioned technical proposal is direct down-conversion receiver.Although it is dry that there is no mirror images
The problem of disturb, but also bring direct current offset, non-linear, noise, narrow-band filtering and isolation etc..
In addition, traditional radio-frequency front-end can be only done the transformation that fixed RF changes to fixed intermediate frequency, for different frequency bands
Mixing just needs to increase the devices such as corresponding analog filter, amplifier, local oscillator.And as radio-frequency front-end needs the frequency range supported
More and more, the increase and modification of complete equipment are very difficult.Meanwhile the product index disunity of different vendor, usually can not
It is compatible, cause the escalation process of radio-frequency front-end complicated lengthy and jumbled.
To sum up, in the prior art radio-frequency front-end in Insertion Loss, DC power, isolation, power handling capability and bandwidth etc.
Aspect performance is insufficient.Also, radio-frequency front-end system cures in the prior art, is unsuitable for multiband, multi-standard working method.For
The above-mentioned problems in the prior art needs a kind of new radio-frequency front-end.
Invention content
For radio-frequency front-end in the prior art there are the problem of, the present invention provides a kind of support channel is total
The restructural radio frequency front-end device enjoyed, described device include：
Receiver Module, is used to receive and forward radiofrequency signal, and the radiofrequency signal includes most N number of channels and every
A channel includes most M frequency ranges, wherein M and N is non-zero natural number；
Optical modulator module is connected with the Receiver Module, for carrying out light modulation to the radiofrequency signal with life
Radiofrequency signal is carried at simultaneously output light；
Light carries local oscillator module, is used to generate and exports light load local oscillation signal corresponding with light load radiofrequency signal, phase
It is identical as the light load wavelength of radiofrequency signal that local oscillation signal is carried with the light of channel corresponding frequency band；
Full light frequency-variable module carries local oscillator module with the optical modulator module and the light and is connected, for the light
It carries radiofrequency signal and the light carries local oscillation signal progress beat frequency and carried with realizing full photomixing to generate and export the light of intermediate frequency
Mixed frequency signal；
All-optical switching module is connected with the full light frequency-variable module, and signal is carried out for carrying mixed frequency signal to the light
It exchanges to export the light information carrying number of specific wavelength combination；
Intermediate frequency output module is connected with the All-optical switching module, for carrying out opto-electronic conversion to the smooth information carrying number
To generate and export intermediate-freuqncy signal.
In one embodiment, the intermediate frequency output module includes multiple medium frequency output end mouths, all medium frequency output ends
Mouth is configured to the intermediate-freuqncy signal of output unified frequency.
In one embodiment：
The optical modulator module includes that N number of light carries radio frequency output port, wherein it is defeated that each light carries radio frequency output port
Go out light all the way and carry radio-frequency multiplexed signal, the light carries multiple and different frequency ranges that radio-frequency multiplexed signal is corresponding same channel all the way
The light carries the multiplexing of radiofrequency signal；
It includes that N number of light carries local oscillator output port that the light, which carries local oscillator module, wherein each light carries local oscillator output port
Light carries local oscillator multiplexed signals all the way for output, and the light carries multiple and different frequency ranges that local oscillator multiplexed signals is corresponding same channel all the way
The light carry local oscillation signal multiplexing.
In one embodiment, described device also includes lasing light emitter, and the lasing light emitter is for generating the corresponding radiofrequency signal
Multichannel light carrier, wherein the frequency range band number and institute that the port number and each channel that light carrier described in multichannel includes include
It is identical to state radiofrequency signal.
In one embodiment, it includes M local oscillator wavelength division multiplexer, M local oscillator electrooptic modulator that the light, which carries local oscillator module,
And local oscillator allocation unit, wherein：
The local oscillator wavelength division multiplexer is connect with the lasing light emitter, and each local oscillator wavelength division multiplexer is for generating all the way
First light carries multiplexed signals, and often the first light described in road carries all differences of same frequency range in multiplexed signals light carrier described in multichannel
The light carrier on channel is multiplexed to obtain；
Each local oscillator electrooptic modulator is connected to a local oscillator wavelength division multiplexer, each local oscillator electric light tune
Device processed is used to carry a kind of RF local oscillator of multiplexed signals modulation to first light all the way to generate the first local oscillator multiplexed signals all the way；
The local oscillator allocation unit includes M local oscillator input and the output of N number of local oscillator, and each local oscillator input is connected to one
A local oscillator electrooptic modulator, the local oscillator allocation unit are configured to the first local oscillator multiplexed signals is logical according to difference
The corresponding local oscillator output is distributed in road so that the local oscillator output, which exports the light all the way, carries local oscillator multiplexing letter
Number.
In one embodiment, the optical modulator module includes the M radio frequency part light carrier multiplexing of the corresponding M frequency ranges
Device, the N number of radio frequency electrooptic modulator and radio frequency light carrier allocation unit for corresponding to N number of channel, wherein：
The radio frequency part light carrier multiplexer is connect with the lasing light emitter, each radio frequency part light carrier multiplexer
Multiplexed signals is carried for generating the second light all the way, the second light carries same frequency in multiplexed signals light carrier described in multichannel described in every road
The light carrier on all different channels of section is multiplexed to obtain；
The radio frequency light carrier allocation unit includes M light carrier input and the output of N number of light carrier, each light carrier
Input is connected to a radio frequency part light carrier multiplexer, and the radio frequency light carrier allocation unit is configured to described the
Two light carry the light carrier in multiplexed signals and are exported so that one to the corresponding light carrier according to different channel allocations
The third light that the light carrier of all different frequency ranges is multiplexed on a one same channel of routing of light carrier output output
Carry multiplexed signals；
The electrooptic modulator is connected to the Receiver Module and each radio frequency electrooptic modulator is connected to one
A light carrier output, each electrooptic modulator be used for will the corresponding rf-signal modulation described all the way to described in all the way
Third light carries and carries radio-frequency multiplexed signal on multiplexed signals to generate the light all the way.
In one embodiment, the radio frequency part light carrier is constructed using same wavelength division multiplexer and photo-coupler to be multiplexed
Device and the local oscillator wavelength division multiplexer, described device include M wavelength division multiplexer and M photo-coupler, wherein：
The wavelength division multiplexer is connect with the lasing light emitter, and each wavelength division multiplexer is carried for generating the 4th light all the way
Multiplexed signals, often in the 4th light load multiplexed signals light carrier described in multichannel described in road on all different channels of same frequency range
The light carrier is multiplexed to obtain；
Each photo-coupler includes an input terminal and two output ends, the input terminal of each photo-coupler
It is connected with a wavelength division multiplexer, the 4th light load multiplexed signals is separated into identical two by the photo-coupler
Road signal simultaneously carries multiplexed signals and first light load multiplexed signals output respectively as second light.
In one embodiment, the All-optical switching module includes：
It is mixed wavelength division multiplexer, is connected with the full light frequency-variable module, is answered for all light to be carried mixed frequency signal
With to export afterwards all the way；
Wavelength routing unit carries mixing input terminal and more it includes one with the connected light of wavelength division multiplexer that is mixed
A light carries signal output end, and each light carries the smooth information carrying that signal output end exports the combination of a specific wavelength
Number.
In one embodiment, the All-optical switching module also includes route control unit, and the route control unit is used for
The exchange regulation of selecting switch in the Wavelength routing unit is configured to export to set each smooth information carrying number with signal bandwidth
The wavelength value for holding output, to realize the wavelength combination for controlling the smooth information carrying number that the light carries signal output end output.
In one embodiment, the quantity that the light carries signal output end is the mixing wavelength division multiplexer input port quantity
Twice.
Compared with prior art, the device of the invention it is small, it is low in energy consumption, have higher signal bandwidth；Meanwhile according to
The device of the invention can be with simple transformation signal exchange pattern, to meet multi-functional, multiband switching requirement.
The other feature or advantage of the present invention will illustrate in the following description.Also, the present invention Partial Feature or
Advantage will be become apparent by specification, or be appreciated that by implementing the present invention.The purpose of the present invention and part
Advantage can be realized or be obtained by specifically noted step in specification, claims and attached drawing.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example and is used together to explain the present invention, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structure diagram of apparatus according to an embodiment of the present invention；
Fig. 2, Fig. 3 and Fig. 5 are the part-structure schematic diagram of the device of embodiment according to Fig. 1 respectively；
Fig. 4 is the schematic diagram of part-structure according to an embodiment of the invention；
Fig. 6 is the part-structure schematic diagram of apparatus according to an embodiment of the present invention.
Specific implementation mode
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, whereby implementation personnel of the invention
Can fully understand that how the invention applies technical means to solve technical problems, and reach technique effect realization process and according to
The present invention is embodied according to above-mentioned realization process.If it should be noted that do not constitute conflict, each embodiment in the present invention
And each feature in each embodiment can be combined with each other, be formed by technical solution protection scope of the present invention it
It is interior.
In the prior art, traditional radio-frequency front-end is in Insertion Loss, DC power, isolation, power handling capability and band
Width etc. performance is insufficient.Also, radio-frequency front-end system cures in the prior art, is unsuitable for multiband, multi-standard working method.
For the above-mentioned problems in the prior art, the present invention proposes a kind of restructural radio frequency for supporting channels share
Fore device.It is wide in signal to solve radio-frequency front-end using optical advantage for the present invention, the method for introducing Microwave photonics
The problem of band, isolation etc., shares radio-frequency channel, in conjunction with broadband large capacity, multi-frequency band radio-frequency based on wavelength-division multiplex technique
The low damage frequency conversion of signal realizes that high-isolation light carries the integrated radio-frequency front end that wide band radio-frequency exchanges.
Specifically, this patent is based on microwave photon technology, gives full play to photon technology broadband, flexible advantage, substantially
Thinking is to recycle electrooptic modulator to be modulated on light carrier respectively, pass through optical coupling radiofrequency signal and local oscillation signal branch
Device simultaneously realizes the beat frequency of radiofrequency signal and local oscillator, final output intermediate-freuqncy signal using the output of photodetector.
Optical signal is with the broadband for being more than 50THz, and using the switching technology of microwave photon, core crosspoint is real on light
It is existing, the broadband advantage of optical aid can be given full play to so that radio frequency exchange has prodigious signal bandwidth.
As shown in Figure 1, in one embodiment of this invention, device include Receiver Module 110, optical modulator module 120,
Light carries local oscillator module 130, full light frequency-variable module 140, All-optical switching module 150 and intermediate frequency output module 160.The present embodiment
It is radiofrequency signal to input (input of Receiver Module 110), and output (output of intermediate frequency output module 160) is intermediate-freuqncy signal.
In the present embodiment, device highest can support the RF signals in N number of channel (containing M frequency range in each channel) simultaneously
Frequency conversion with exchange processing.It is accordingly used in receiving and the Receiver Module 110 of radiofrequency signal is forwarded to be configured to can receive and include
Most N number of channels and each channel include the radiofrequency signal of most M frequency ranges, wherein M and N is non-zero natural number.
Next by taking input signal is the roads M × N radiofrequency signal as an example.What needs to be explained here is that the roads M × N radio frequency is believed
The maximum magnitude of processing can be received by number being the device of the present embodiment, but be not to say that the device of the present embodiment can only handle this
Range, when the band number of radiofrequency signal and port number are less than M × N, the device of the present embodiment can also be handled.In addition,
In specific embodiments of the present invention, the occurrence of M and N can be set according to actual needs.
Optical modulator module 120 is connected with Receiver Module 110, for carrying out light modulation to radiofrequency signal to generate and defeated
Light extraction carries radiofrequency signal.Light carries local oscillator module 130 and carries local oscillation signal for generating and exporting light corresponding with light load radiofrequency signal.
Full light frequency-variable module 140 carries local oscillator module 130 with optical modulator module 120 and light and is connected, for carrying radio frequency to light
Signal and light carry local oscillation signal and carry out beat frequency to realize full photomixing to which simultaneously output light carries mixed frequency signal for generation.
All-optical switching module 150 is connected with full light frequency-variable module 140, for light carry mixed frequency signal carry out signal exchange with
Export the light information carrying number of specific wavelength combination.Intermediate frequency output module 160 is connected with All-optical switching module, for light information carrying number into
Row opto-electronic conversion is to generate and export intermediate-freuqncy signal.
In order to achieve the purpose that shared band, sharing channel.In the present embodiment, it is generated using M RF local oscillator N number of logical
The light in road carries local oscillator multiplexed signals, and each channel has M light to carry local oscillation signal (corresponding M frequency range).Specifically, light carries local oscillator mould
Block 130 includes that N number of light carries local oscillator output port, wherein each light carries the output of local oscillator output port, and light carries local oscillator multiplexing letter all the way
Number, light carries the multiplexing of the light load local oscillation signal for multiple and different frequency ranges that local oscillator multiplexed signals is corresponding same channel all the way.
It generates local oscillation signal and first has to the light source that construction generates light carrier.Therefore, the device of the present embodiment also includes laser
Source 111.Must all there be corresponding light to carry local oscillation signal due to carrying radiofrequency signal (radiofrequency signal) per light all the way.Therefore corresponding M × N
Road radiofrequency signal, lasing light emitter 111 just need to generate the roads M × N light carrier.The channel for the multichannel light carrier that i.e. lasing light emitter 111 generates
Band number on number and each channel is identical with the radiofrequency signal received, and (the multichannel light carrier of the generation of lasing light emitter 111 includes
Most N number of channels and each channel include most M frequency ranges).
Light carries local oscillator module 130 and includes local oscillator wavelength division multiplexer set 131, local oscillator electrooptic modulator set 132 and sheet
Allocation unit of shaking 133.Local oscillator wavelength division multiplexer set 131 includes M local oscillator wavelength division multiplexer, is connect with lasing light emitter 111, often
A local oscillator wavelength division multiplexer carries multiplexed signals for generating the first light all the way, and multiplexed signals is carried by multichannel light carrier per the first light of road
In same frequency range all different channels on light carrier be multiplexed to obtain.
Local oscillator electrooptic modulator set 132 includes M local oscillator electrooptic modulator, and each local oscillator electrooptic modulator is connected to one
A local oscillator wavelength division multiplexer, each local oscillator electrooptic modulator, which is used to carry multiplexed signals to the first light all the way, modulates a kind of RF local oscillator
To generate the first local oscillator multiplexed signals all the way；
Local oscillator allocation unit 133 includes M local oscillator input and the output of N number of local oscillator, and each local oscillator input is connected to a sheet
Shake electrooptic modulator.Local oscillator allocation unit is configured to the first local oscillator multiplexed signals according to different channel allocations to corresponding sheet
Output of shaking carries local oscillator multiplexed signals so that a local oscillator output exports light all the way.
Realize that light carries local oscillator module 130 and (uses cyclic using line gauge (cyclic AWG) distribution local oscillator is recycled with one
AWG constructs local oscillator allocation unit) embodiment for.As shown in Fig. 2, local oscillator wavelength division multiplexer set 131 is connected to lasing light emitter
111.Lasing light emitter 111 includes M × N number of light carrier generator (LD1、LD2…LDN、LDN+1、LDN+2、…LD2N、LD2N+1、…
LDM×N).M × N number of light carrier that M × N number of light carrier generator generates forms M by M local oscillator wavelength division multiplexer (N × 1AWG)
A first light carries multiplexed signals (carrying multiplexed signals per the first light all the way to be multiplexed to obtain by the roads N light carrier).
The first light of the first via, which carries multiplexed signals, can be expressed as (λ1, λ2..., λN)；
Second the first light of tunnel, which carries multiplexed signals, can be expressed as (λN+1, λN+2..., λ2N)；
And so on, the roads M can be expressed as (λ(M-1)N+1, λ(M-1)N+2..., λMN).(λ represents one in multiplexed signals
Optical carrier, subscript represent wavelength number)
Multiplexed signals, which is carried, per the first light all the way modulates a kind of RF local oscillator (LOm, LO using local oscillator electrooptic modulator (EOM)
RF local oscillator is represented, label m represents corresponding frequency range number, and the value of m takes (1~M)) to generate the first local oscillator multiplexing letter all the way
Number so that the multiplexed signals that shakes per first all the way is loaded with identical local oscillator.
The first local oscillator of first via multiplexed signals 200 can be expressed as (λ1 LO1, λ2 LO1..., λN LO1)；
Second tunnel the first local oscillator multiplexed signals 201 can be expressed as (λN+1 LO2, λN+2 LO2..., λ2N LO2)；
And so on, the roads M (finally all the way) first local oscillator multiplexed signals 202 can be expressed as
(λ(M-1)N+1 LOM, λ(M-1)N+2 LOM..., λMN LOM).(λ represents an optical carrier in multiplexed signals, subscript
Wavelength number is represented, subscript represents local oscillator number)
Local oscillator allocation unit 133 (M × N AWG, M input, N number of output) has the function of cyclic shift (using cycle
Line gauge (cyclic AWG)), i.e., the signal of each output port is also achieved that each input terminal from different input ports
The identical light of mouth carries local oscillator and distributes to different output ports.
The first via light that local oscillator allocation unit 133 exports carries local oscillator multiplexed signals 210 and can be expressed as
(λ1 LO1, λN+1 LO2..., λ(M-1)N+1 LOM)；
Second road light carries local oscillator multiplexed signals 211 and can be expressed as
(λ2 LO1, λN+2 LO2..., λ(M-1)N+2 LOM)；
And so on, the roads N light carries local oscillator multiplexed signals 212 and can be expressed as
(λN LO1, λ2N LO2..., λMN LOM).(λ represents an optical carrier in multiplexed signals, and subscript represents wavelength volume
Number, subscript represents local oscillator number)
Thus, which the light each exported carries the multiplexing that local oscillator multiplexed signals is M frequency range local oscillator, also just support to realize same
The needs that one channel is mixed the radiofrequency signal of M different frequency range achieve the purpose that local oscillator is shared, channels share.
In the present embodiment, light carries radiofrequency signal and generates and export the design for also using shared band, sharing channel.
Since each light carries the multiplexing that radio-frequency channel is multiple frequency range radiofrequency signals, in order to realize that the full light frequency conversion of multichannel (carries light
Radiofrequency signal and light carry local oscillation signal and carry out beat frequency), need to ensure that the light of same channels corresponding frequency band carries radiofrequency signal and its
Light, which carries local oscillator, has the light carrier of phase co-wavelength.Therefore, the multiplexing of multichannel light load radiofrequency signal should carry this with multichannel light
That shakes signal is multiplexed with identical Wavelength Assignment scheme.Ensure that the light of same channels corresponding frequency band carries local oscillation signal and penetrated with light load
The wavelength of frequency signal is identical.
In the present embodiment, optical modulator module 120 includes that N number of light carries radio frequency output port, wherein it is defeated that each light carries radio frequency
Light carries radio-frequency multiplexed signal all the way for exit port output, and light carries multiple and different frequencies that radio-frequency multiplexed signal is corresponding same channel all the way
The light of section carries the multiplexing of radiofrequency signal.
Optical modulator module 120 include radio frequency part light carrier multiplexer set 121, radio frequency electrooptic modulator set 123 with
And radio frequency light carrier allocation unit 122.In order to ensure the consistent of wavelength, radio frequency part light carrier multiplexer set 121 and local oscillator
Wavelength division multiplexer is connected to identical light source to receive the light carrier of unified wavelength.
Radio frequency part light carrier multiplexer set 121 is connected with lasing light emitter 111, and it includes M radio frequencies of corresponding M frequency range
Part light carrier multiplexer.Each radio frequency part light carrier multiplexer carries multiplexed signals for generating the second light all the way, the per road
Two light carry multiplexed signals and are multiplexed to obtain by the light carrier on all different channels of same frequency range in multichannel light carrier.
Radio frequency light carrier allocation unit 122 includes M light carrier input and the output of N number of light carrier.Each light carrier input
It is connected to a radio frequency part light carrier multiplexer.Radio frequency light carrier allocation unit 122 is configured to the second light carrying multiplexing letter
Light carrier in number is exported to corresponding light carrier according to different channel allocations so that a light carrier output exports all the way
Multiplexed signals is carried by the third light that the light carrier of all different frequency ranges on same channel is multiplexed.
Radio frequency electrooptic modulator set 123 includes N number of radio frequency electrooptic modulator in corresponding N number of channel, radio frequency electro-optical modulation
Device set 123 is connected to Receiver Module 110 and each radio frequency electrooptic modulator is connected to a light carrier output, Mei Ge electricity
Optical modulator is used to carry corresponding rf-signal modulation all the way to third light all the way and be penetrated on multiplexed signals with generating light load all the way
Frequency multiplexed signals.
Continue to realize that light carries this (using cyclic AWG construction local oscillators allocation unit) using cyclic AWG distribution local oscillator
For the embodiment of module of shaking 120.As shown in figure 3, radio frequency part light carrier multiplexer set 121 is connected to lasing light emitter 111.Swash
Light source 111 includes M × N number of light carrier generator (LD1、LD2…LDN、LDN+1、LDN+2、…LD2N、…LDM×N).M × N number of light carries
M × N number of light carrier that wave producer generates forms M the second light by M radio frequency part light carrier multiplexer (N × 1AWG) and carries
Multiplexed signals (carries multiplexed signals to be multiplexed to obtain by the roads N light carrier) per the second light all the way.
The second light of the first via, which carries multiplexed signals, can be expressed as (λ1, λ2..., λN)；
Second the second light of tunnel, which carries multiplexed signals, can be expressed as (λN+1, λN+2..., λ2N)；
And so on, the roads M can be expressed as (λ(M-1)N+1, λ(M-1)N+2..., λMN).(λ represents one in multiplexed signals
Optical carrier, subscript represent wavelength number)
Utilize radio frequency light carrier allocation unit identical with local oscillator allocation unit 133 122 (cyclic AWG) (M × N
AWG, M input, N number of output) realize cyclic shift, obtain with light carry local oscillator multiplexed signals wavelength combination it is identical (compared with wave
Long distribution is without modulation local oscillator) third light load multiplexed signals.Third light carries multiplexed signals and passes through radio frequency electrooptic modulator set
123 radio frequency electrooptic modulator (EOM), per radiofrequency signal (RFn, RF expression radiofrequency signal, the label for modulating a channel all the way
N represents corresponding channel number, and the value of n takes 1~N).
Radio frequency electrooptic modulator set 123 exports first via light load radio-frequency multiplexed signal 310 and can be expressed as
(λ1 RF1, λN+1 RF1..., λ(M-1)N+1 RF1)；
The light of second tunnel output carries radio-frequency multiplexed signal 311 and can be expressed as
(λ2 RF2, λN+2 RF2..., λ(M-1)N+2 RF2)；
And so on, the light of the roads N output, which carries radio-frequency multiplexed signal 312, to be expressed as
(λN RFN, λ2N RFN..., λMN RFN)。
Include N number of beat frequency coupler in full light frequency-variable module 140, each beat frequency coupler includes two input terminals and one
A output end.Two input terminals of each beat frequency coupler are connected respectively to a radio frequency electrooptic modulator in corresponding same channel
And in an output of local oscillator allocation unit.It carries radio-frequency multiplexed signal to the light in the same channel of correspondence and light carries local oscillator multiplexing
Signal carries out beat frequency and carries mixed frequency signal with output light.
The present invention realizes full light frequency-variable module 140 using general optical frequency mixing structure, does not limit to serial, parallel organization.
The optical frequency variable theory structure used in an embodiment of the present invention is as shown in Figure 4 (parallel-connection structure).The light of lasing light emitter LD transmittings
Carrier wave is emitted to two electrooptic modulators (EOM) respectively after being divided by fiber coupler (Coupler) 401.Radiofrequency signal RF with
Local oscillation signal LO is modulated on light carrier by EOM couples respectively, and carries out beat frequency by fiber coupler (Coupler) 402, most
Eventually intermediate frequency electric signal is exported by photoelectric detector PD.
Electrooptic modulator can also use phase-modulator (PM) etc. in addition to Mach-Zehnder modulators (MZM).It uses
Different cascade structure, optical device, the sides such as the property indices phase noise of optical frequency mixing, isolation, stability
Face has differences.Device index, environment influence and usage scenario should be considered in specific design, made a choice.
In the embodiment shown in fig. 1, All-optical switching module 150 includes mixing wavelength division multiplexer 151 and Wavelength routing
Unit 152.Mixing wavelength division multiplexer 151 is connected with full light frequency-variable module 140, for all light load mixed frequency signal to be multiplexed with one
It is exported behind road；Wavelength routing unit 152 includes that a light load connected with wavelength division multiplexer be mixed is mixed input terminal and multiple
Light carries signal output end, and each light carries the light information carrying number that signal output end exports the combination of a specific wavelength.
Further, in the present embodiment, All-optical switching module 150 also includes route control unit 153.Route test list
Member 153 is for configuring in Wavelength routing unit 152 exchange regulation of selecting switch and signal bandwidth to set each light information carrying number
The wavelength value of output end output, to realize that control light carries the wavelength combination of the light information carrying number of signal output end output.
Specifically, being multiplexed with all input optical signals all the way as shown in figure 5, being mixed wavelength division multiplexer 151, it is input to
Wavelength routing unit 152.Control unit 153 receives user instructions, and configures the friendship of the selecting switch of Wavelength routing unit 152 in real time
Rule and signal bandwidth are changed, by setting the wavelength value of each output port output, realizes that arbitrary port exports arbitrary wavelength group
The optical signal of conjunction.When needing to change the routing rule of wavelength-selective switches of Wavelength routing unit 152, it is only necessary to which update configuration refers to
Order can realize new switch mode, complete the reconstruct of function of exchange, meet multi-functional, multiband switching requirement.
This single-degree-of-freedom of microwave photon technology introducing wavelength, is generated based on wavelength-division multiplex technique and shares local oscillator, can facilitated
Realize multichannel, multiband frequency conversion in ground.Local oscillator is shared, multichannel frequency conversion simultaneously greatly improves the utilization rate of resource, reduces one
Volume, power consumption of body radio-frequency front-end etc..
The device of the invention realizes the signal exchange of reconfigurable function using optics switching matrix.Control panel receives user
Instruction configures the exchange regulation and signal bandwidth of Wavelength routing selecting switch in real time, by setting each output port output
Wavelength value realizes that arbitrary port exports the optical signal of arbitrary wavelength combination.When the routing rule for needing change wavelength-selective switches
When, it is only necessary to new switch mode can be realized by updating configuration-direct, complete the reconstruct of function of exchange, meet multi-functional, multifrequency
The switching requirement of section.
In the present embodiment, the effect for being mixed wavelength division multiplexer 151 is will be from the optical signal coupling of full light frequency-variable module 140
Be combined into all the way, wavelength division multiplexer may be used to realize, for example, N × 1 AWG.
Wavelength-selective switches (the Wavelength Selective of 1 × 2N may be used in Wavelength routing unit 152
Switch, WSS) it realizes.WSS is based on liquid crystal on silicon (LCoS) technology, by liquid crystal on silicon controller from custom system
Instruction morphing is selection of the WSS output ports to optical wavelength, final to realize the transformation of programming Control optical wavelength routing, and can be real
Now broadcast and multicast functionality.Control unit is received user instructions via control interface, configures Wavelength routing selecting switch in real time
Exchange regulation, the wavelength value and signal bandwidth of each output port output of control Wavelength routing unit, realizes arbitrary port output
The optical signal of arbitrary wavelength combination.The control of Wavelength routing unit reception control unit, will be defeated after input optical signal Route Selection
Go out to different output port.
Further, in order to realize the support of redundancy backup, the light of Wavelength routing unit 152 carries the port of signal output end
Number should be twice (2N) of the input port number (the output port number N of full light frequency-variable module 140) for being mixed wavelength division multiplexer 151.
Intermediate frequency output module 160 includes multiple (2N) medium frequency output end mouths, and all medium frequency output end mouths are configured to defeated
Go out the intermediate-freuqncy signal of unified frequency.The light-receiving of intermediate frequency output module 160 can select simple photoelectric detector PD, can also
Select balance photodetector BPD.
Based on device shown in FIG. 1, final signal processing flow is：
Receiver Module 110 receives the roads M × N radiofrequency signal, i.e., N number of channel, M frequency range is contained in each channel.Light
The light that modulation module 120 completes to generate the light modulation of radiofrequency signal N number of channel carries radio-frequency multiplexed signal, and each channel has M
Light carries radiofrequency signal (corresponding M frequency range).Light carries the light load local oscillator that local oscillator module 130 generates N number of channel using M RF local oscillator
There is M local oscillation signal (corresponding M frequency range) in multiplexed signals, each channel.The two Wavelength Assignment scheme having the same.
Light carries local oscillator multiplexed signals and carries coupling of the radio-frequency multiplexed signal by full light frequency-variable module 140 with light, realizes beat frequency,
The light for obtaining intermediate frequency carries mixed frequency signal.
Illustrate the conversion process of wavelength combination by taking the first via as an example.First via light carries local oscillator multiplexed signals and is expressed as
(λ1 LO1, λN+1 LO2..., λ(M-1)N+1 LOM),
First via light carries radio-frequency multiplexed signal and is expressed as
(λ1 RF1, λN+1 RF1..., λ(M-1)N+1 RF1)。
Light information carrying λ1 LO1With λ1 RF1Beat frequency can only realize that the radiofrequency signal of frequency range 1 changes to intermediate frequency, be expressed as λ1 IF11(on
Mark IF11 indicates that the intermediate frequency of the 1st frequency range in the 1st channel, i.e. IFij indicate the intermediate frequency of i-th of j-th of channel frequency range), with other
The beat frequency of frequency range is due to separate intermediate frequency, in process light exchange (input of optical exchanger part WSS, output wavelength range are limited)
Time can be filtered.
Therefore, first via frequency conversion (beat frequency) output can be expressed as
(λ1 IF11, λN+1 IF12..., λ(M-1)N+1 IF1M)；
Frequency conversion (beat frequency) output on the second tunnel can be expressed as
(λ2 IF21, λN+2 IF22..., λ(M-1)N+2 IF2M)。
All-optical switching module 150 realizes that the arbitrary exchange of the roads the M × N light information carrying number exported to above-mentioned frequency conversion selects output,
The signal of each output port is the combination of any frequency range from any input channel.And redundancy backup is supported, according to control
The dynamic restructuring of exchange regulation is accomplished in the configuration of unit processed.
Signal after exchange carries out radiofrequency signal of the opto-electronic conversion (intermediate frequency output module 160) at unified intermediate frequency, and intermediate frequency is defeated
Go out module 160 and export 2N port, each port is the combination of multiple frequency range intermediate-freuqncy signals.
Comparison diagram 2 and Fig. 3 can be seen that radio frequency part light carrier multiplexer set 121 and local oscillator wavelength division multiplexer set
131 functions of being realized are identical.In order to simplify apparatus structure, in an embodiment of the present invention, using same set of hard
Part system constructs radio frequency part light carrier multiplexer set and local oscillator wavelength division multiplexer set.
By taking input signal is the roads M × N radiofrequency signal as an example.Construct M wavelength division multiplexer and M photo-coupler.Wavelength-division
Multiplexer is connect with lasing light emitter, and each wavelength division multiplexer carries multiplexed signals for generating the 4th light all the way, is carried per the 4th light of road multiple
It is multiplexed to obtain by the light carrier on all different channels of same frequency range in multichannel light carrier with signal.
The 4th light of the first via, which carries multiplexed signals, can be expressed as (λ1, λ2..., λN)；
The 4th light of second tunnel, which carries multiplexed signals, can be expressed as (λN+1, λN+2..., λ2N)；
And so on, the roads M can be expressed as (λ(M-1)N+1, λ(M-1)N+2..., λMN).(λ represents one in multiplexed signals
Optical carrier, subscript represent wavelength number) it (carries multiplexed signals with the first light and the second light carries the complete phase of multiplexed signals
Together).
Each photo-coupler includes an input terminal and two output ends, the input terminal of each photo-coupler and a wave
Division multiplexer is connected, and the 4th light load multiplexed signals is separated into identical two paths of signals and as second by photo-coupler
Light carries multiplexed signals and the first light carries multiplexed signals output.
I.e. two of photo-coupler outputs are connected respectively to local oscillator electrooptic modulator and radio frequency light carrier allocation unit
One light carrier input.The signal of two output outputs of photo-coupler is that the 4th light carries multiplexed signals.
As shown in fig. 6, device includes wavelength division multiplexer set 601 and photo-coupler set 602.
M wavelength division multiplexer (N × 1AWG) is configured in wavelength division multiplexer set 601.Lasing light emitter 111 includes M × N number of light
Carrier generator (LD1、LD2…LDN、LDN+1、LDN+2、…LD2N、…LDM×N).Each wavelength-division in wavelength division multiplexer set 601
Multiplexer (N × 1AWG) is connect with N number of light carrier generator of the same frequency range of lasing light emitter,
M photo-coupler is configured in photo-coupler set 602, each photo-coupler includes an input terminal and two
Output end.The input terminal of each photo-coupler is connected with a wavelength division multiplexer；Two outputs of one photo-coupler connect respectively
The one of the local oscillator electrooptic modulator and radio frequency light carrier allocation unit 122 that are connected in local oscillator electrooptic modulator set 132
A light carrier input.
Based on above structure, it is only necessary to which constructing a set of wavelength division multiplexer can realize that optical modulator module and light carry local oscillator
The light of module carries the supply of multiplexed signals.To enormously simplify the structure of device.
To sum up, radio frequency front-end device of the invention supports the radiofrequency signal frequency conversion of multichannel, multiband, need not be to each
Channel configures digital processing unit, passes through the radio frequency exchange common numbers processing unit of dynamic reconfigurable.And compatible band logical is adopted
Sample technology, with the ADC processing broadband of low performance, the radiofrequency signal of high speed.Compared with prior art, the device of the invention volume
It is small, low in energy consumption, have higher signal bandwidth；Meanwhile the apparatus according to the invention can with simple transformation signal exchange pattern, from
And meet multi-functional, multiband switching requirement.
While it is disclosed that embodiment content as above but described only to facilitate understanding the present invention and adopting
Embodiment is not limited to the present invention.Method of the present invention can also have other various embodiments.Without departing substantially from
In the case of essence of the present invention, those skilled in the art make various corresponding changes or change in accordance with the present invention
Shape, but these corresponding changes or deformation should all belong to the scope of the claims of the present invention.
Claims (7)
1. a kind of restructural radio frequency front-end device for supporting channels share, which is characterized in that described device includes：
Receiver Module is used to receive and forward radiofrequency signal, the radiofrequency signal to include most N number of channels and each lead to
Road includes most M frequency ranges, wherein M and N is non-zero natural number；
Optical modulator module is connected with the Receiver Module, for carrying out light modulation to the radiofrequency signal to generate simultaneously
Output light carries radiofrequency signal；
Light carries local oscillator module, is used to generate and export light load local oscillation signal corresponding with light load radiofrequency signal, identical logical
It is identical as the light load wavelength of radiofrequency signal that the light of road corresponding frequency band carries local oscillation signal；
Full light frequency-variable module carries local oscillator module with the optical modulator module and the light and is connected, for being penetrated to light load
Frequency signal and the light carry local oscillation signal and carry out beat frequency to realize full photomixing to generation and export the light load mixing of intermediate frequency
Signal；
All-optical switching module is connected with the full light frequency-variable module, and signal exchange is carried out for carrying mixed frequency signal to the light
To export the light information carrying number of specific wavelength combination；
Intermediate frequency output module is connected with the All-optical switching module, for carrying out opto-electronic conversion to the smooth information carrying number with life
At and export intermediate-freuqncy signal；
Wherein, the optical modulator module includes that N number of light carries radio frequency output port, wherein each light carries radio frequency output port
Light carries radio-frequency multiplexed signal all the way for output, and the light carries multiple and different frequency ranges that radio-frequency multiplexed signal is corresponding same channel all the way
The light carry radiofrequency signal multiplexing；
It includes that N number of light carries local oscillator output port that the light, which carries local oscillator module, wherein each light carries the output of local oscillator output port
Light carries local oscillator multiplexed signals all the way, and the light carries the institute of multiple and different frequency ranges of the local oscillator multiplexed signals for the same channel of correspondence all the way
State the multiplexing that light carries local oscillation signal；
The All-optical switching module includes：
It is mixed wavelength division multiplexer, is connected with the full light frequency-variable module, is multiplexed with for all light to be carried mixed frequency signal
It exports afterwards all the way；
Wavelength routing unit carries mixing input terminal and multiple light it includes one with the connected light of wavelength division multiplexer that is mixed
Signal output end is carried, each light carries the smooth information carrying number that signal output end exports the combination of a specific wavelength；
Route control unit, the route control unit are used to configure the exchange regulation of selecting switch in the Wavelength routing unit
With signal bandwidth to set the wavelength value that each light carries signal output end output, to realize that the control smooth information carrying number is defeated
The wavelength combination of the smooth information carrying number of outlet output.
2. the apparatus according to claim 1, which is characterized in that the intermediate frequency output module includes multiple medium frequency output ends
Mouthful, all medium frequency output end mouths are configured to the intermediate-freuqncy signal of output unified frequency.
3. the apparatus according to claim 1, which is characterized in that described device also includes lasing light emitter, and the lasing light emitter is used for
Generate the multichannel light carrier of the corresponding radiofrequency signal, wherein the port number and each channel that light carrier described in multichannel includes
Including band number it is identical as the radiofrequency signal.
4. device according to claim 3, which is characterized in that it includes M local oscillator wavelength-division multiplex that the light, which carries local oscillator module,
Device, M local oscillator electrooptic modulator and local oscillator allocation unit, wherein：
The local oscillator wavelength division multiplexer is connect with the lasing light emitter, and each local oscillator wavelength division multiplexer is for generating all the way first
Light carries multiplexed signals, and often the first light described in road carries all different channels of same frequency range in multiplexed signals light carrier described in multichannel
On the light carrier be multiplexed to obtain；
Each local oscillator electrooptic modulator is connected to a local oscillator wavelength division multiplexer, each local oscillator electrooptic modulator
For carrying a kind of RF local oscillator of multiplexed signals modulation to first light all the way to generate the first local oscillator multiplexed signals all the way；
The local oscillator allocation unit includes M local oscillator input and the output of N number of local oscillator, and each local oscillator input is connected to an institute
Local oscillator electrooptic modulator is stated, the local oscillator allocation unit is configured to the first local oscillator multiplexed signals according to different channels point
The dispensing local oscillator output accordingly is so that the local oscillator output exports the light all the way and carries local oscillator multiplexed signals.
5. device according to claim 4, which is characterized in that the optical modulator module includes the M of the corresponding M frequency ranges
A radio frequency part light carrier multiplexer, N number of radio frequency electrooptic modulator in corresponding N number of channel and the distribution of radio frequency light carrier are single
Member, wherein：
The radio frequency part light carrier multiplexer is connect with the lasing light emitter, and each radio frequency part light carrier multiplexer is used for
It generates the second light all the way and carries multiplexed signals, the second light carries same frequency range in multiplexed signals light carrier described in multichannel described in every road
The light carrier on all difference channels is multiplexed to obtain；
The radio frequency light carrier allocation unit includes M light carrier input and the output of N number of light carrier, each light carrier input
It is connected to a radio frequency part light carrier multiplexer, the radio frequency light carrier allocation unit is configured to second light
The light carrier carried in multiplexed signals is exported to the corresponding light carrier so that an institute according to different channel allocations
The third light that the light carrier that light carrier output output one route all different frequency ranges on same channel is multiplexed is stated to carry again
Use signal；
The local oscillator electrooptic modulator is connected to the Receiver Module and each radio frequency electrooptic modulator is connected to one
A light carrier output, each local oscillator electrooptic modulator are used for the corresponding rf-signal modulation described all the way to all the way
The third light carries and carries radio-frequency multiplexed signal on multiplexed signals to generate the light all the way.
6. device according to claim 5, which is characterized in that construct institute using same wavelength division multiplexer and photo-coupler
Radio frequency part light carrier multiplexer and the local oscillator wavelength division multiplexer are stated, described device includes M wavelength division multiplexer and M light
Coupler, wherein：
The wavelength division multiplexer is connect with the lasing light emitter, and each wavelength division multiplexer carries multiplexing for generating the 4th light all the way
Signal, carried per the 4th light described in road in multiplexed signals light carrier described in multichannel on all different channels of same frequency range described in
Light carrier is multiplexed to obtain；
Each photo-coupler includes an input terminal and two output ends, the input terminal and one of each photo-coupler
A wavelength division multiplexer is connected, and the 4th light load multiplexed signals is separated into identical two-way by the photo-coupler to be believed
Number and carry multiplexed signals and first light respectively as second light and carry multiplexed signals output.
7. device according to any one of claim 1 to 6, which is characterized in that the light carries the quantity of signal output end
It is twice of the mixing wavelength division multiplexer input port quantity.
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| CN110365401A (en) * | 2019-08-14 | 2019-10-22 | 上海卫星工程研究所 | Telecommunication satellite retransmission unit and its retransmission method based on Microwave photonics |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664653A (en) * | 2012-05-17 | 2012-09-12 | 天津里外科技有限公司 | Mobile terminal and radio frequency front terminal thereof with radio frequency digital-to-analog conversion type linear transmitter |
| CN102832959A (en) * | 2012-08-22 | 2012-12-19 | 天津大学 | Radio-frequency front end in high and medium frequency superheterodyne+zero intermediate frequency structure |
| CN202772878U (en) * | 2012-06-11 | 2013-03-06 | 天津里外科技有限公司 | Radio frequency front-end transceiver system for multi-standard fully-compatible mobile user terminal chip and application thereof |
| CN202818280U (en) * | 2012-05-17 | 2013-03-20 | 天津里外科技有限公司 | Mobile terminal and radio frequency front end thereof with radio frequency digital-to-analogue conversion type linear transmitter |
-
2016
- 2016-01-07 CN CN201610009293.9A patent/CN105471467B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664653A (en) * | 2012-05-17 | 2012-09-12 | 天津里外科技有限公司 | Mobile terminal and radio frequency front terminal thereof with radio frequency digital-to-analog conversion type linear transmitter |
| CN202818280U (en) * | 2012-05-17 | 2013-03-20 | 天津里外科技有限公司 | Mobile terminal and radio frequency front end thereof with radio frequency digital-to-analogue conversion type linear transmitter |
| CN202772878U (en) * | 2012-06-11 | 2013-03-06 | 天津里外科技有限公司 | Radio frequency front-end transceiver system for multi-standard fully-compatible mobile user terminal chip and application thereof |
| CN102832959A (en) * | 2012-08-22 | 2012-12-19 | 天津大学 | Radio-frequency front end in high and medium frequency superheterodyne+zero intermediate frequency structure |
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