CN109600143A - 30MHz~2GHz multi-channel wide frequency range generalization integrates radio-frequency module - Google Patents
30MHz~2GHz multi-channel wide frequency range generalization integrates radio-frequency module Download PDFInfo
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- CN109600143A CN109600143A CN201811214751.8A CN201811214751A CN109600143A CN 109600143 A CN109600143 A CN 109600143A CN 201811214751 A CN201811214751 A CN 201811214751A CN 109600143 A CN109600143 A CN 109600143A
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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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
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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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
- H04B1/0017—Digital filtering
-
- 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
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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
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
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Abstract
The invention discloses a kind of comprehensive radio-frequency modules of 30MHz~2GHz multi-channel wide frequency range generalization, include analog transmissions channel, local oscillator unit and digital signal processing unit, digital signal processing unit is for exporting 70MHz intermediate-freuqncy signal to analog transmissions channel；Local oscillator unit generates 3 fixed local oscillators and 5 emit variable local oscillator；70MHz intermediate-freuqncy signal is first mixed with 3 one for fixing this center of percussion by the analog transmissions channel, exports the medium-and-high freuqncy signal of 400MHz or 800MHz or 1200MHz；One for can be changed this center of percussion with 5 transmittings again be mixed for the second time, obtains 30MHz~2000MHz radiofrequency signal.The present invention can satisfy the demand of the various sensor rf integrations of airborne avionics system.
Description
Technical field
The invention belongs to wireless communication field more particularly to radio circuit technology and Digital Signal Processings.
Background technique
Along with the development of avionics system high integrity framework, the synthesis of radio-frequency enabled is put into practice.Perhaps
More radio frequency sensor functions disappear from the configuration of hardware, in such a system, are realized with a variety of shared resource modules each
Kind function, can not divide the boundary line of traditional each subsystem again.The acquisition of various functions is completely by loading different software
It realizes, avionics system is transitioned into the concept of lateral function division from traditional longitudinal function division.Function division is entire
Functional characteristic is close in system, task is associated with close part, and resource-sharing may be implemented in same functional areas, is easy each other
Remaining and realize dynamic reconstruct and fault-tolerant.Avlomcs system integration is advanced to data processing from display, and is advanced to
The synthesis of radio frequency sensor system.
The comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization realizes will be various in avionics system
Radio frequency sensor subsystem realizes the synthesis of 30MHz~2GHz wide-band radio frequency, it provides a kind of multi-mode, wide-band, more
It is comprehensive to meet the various radio frequency sensors of airborne aviation electronics well for the configurable rf integration solution of function, software
Demand.
For these reasons, it is desirable that develop a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization.
Summary of the invention
Goal of the invention of the invention is to provide a kind of comprehensive radio frequency mould of 30MHz~2GHz multi-channel wide frequency range generalization
Block, for meeting the needs of airborne avionics system various sensor rf integrations.
Goal of the invention of the invention is achieved through the following technical solutions:
A kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, includes analog transmissions channel, local oscillator list
Member and digital signal processing unit；
The digital signal processing unit includes transmitting terminal signal processing module, and the transmitting terminal signal processing module is used for
70MHz intermediate-freuqncy signal is exported to analog transmissions channel；
The local oscillator unit is for generating the first fixed local oscillator, the second fixed local oscillator, the fixed local oscillator of third, the first transmitting can
Change local oscillator, the variable local oscillator of the second transmitting, third emit variable local oscillator, the 4th transmitting can be changed local oscillator and the 5th emits variable local oscillator,
First transmitting can be changed local oscillator, the second transmitting can be changed local oscillator, third transmitting can be changed local oscillator, the 4th transmitting can be changed local oscillator, the 5th emits
The stepping that variable local oscillator emits variable local oscillator is 1KHz；
The analog transmissions channel successively includes to emit frequency mixing module, second of transmitting frequency mixing module and transmitting electricity for the first time
Tuned filter group module；The first time transmitting frequency mixing module is used for 70MHz intermediate-freuqncy signal according to the difference of output frequency
Selection is mixed with one that the first fixed local oscillator, the second fixed local oscillator, third fix this center of percussion, export 400MHz or
The medium-and-high freuqncy signal of 800MHz or 1200MHz；Second of transmitting frequency mixing module is by medium-and-high freuqncy signal further according to output frequency difference
Selection with first emit variable local oscillator, second emit variable local oscillator, third emits variable local oscillator, the 4th emits variable local oscillator, the
Five transmittings can be changed second of mixing of a progress of this center of percussion, obtain 30MHz~2000MHz radiofrequency signal；The transmitting electricity is adjusted
In humorous filter bank block include seven different frequency ranges filter, transmitting electrically tunable filter group module by 30MHz~
2000MHz radiofrequency signal selects a filter to be filtered output according to output frequency.
Preferably, first time transmitting frequency mixing module successively include filter, amplifier, numerical-control attenuator, frequency mixer,
Attenuator, amplifier, three elections switch, filter group, three elections switch and amplifier, the 70MHz intermediate-freuqncy signal pass through first
Wave filter, amplifier, numerical-control attenuator carry out intermediate frequency filtering, amplification, numerical control attenuation, and then frequency mixer is according to output frequency
Difference selection is mixed with one among the first fixed local oscillator, the second fixed local oscillator, the fixed local oscillator of third, then afterwards by declining
Subtract device, amplifier carries out decaying matching, amplification, finally again pass through three elections switch, filter group, three elections switch and amplifier
The filtering of selection filter group, the medium-and-high freuqncy signal for amplifying output 400MHz or 800MHz or 1200MHz again；Wherein filter group packet
Containing three filters, the center frequency point of three filters is 400MHz, 800MHz and 1200MHz respectively, and bandwidth is 20MHz.
Preferably, second of transmitting frequency mixing module successively includes frequency mixer, numerical-control attenuator and amplifier, high intermediate frequency
Signal first emits variable local oscillator, the variable local oscillator of the second transmitting, third according to output frequency difference selection first by frequency mixer and emits
Variable local oscillator, the 4th emit variable local oscillator, the 5th transmitting can be changed one of this center of percussion and is mixed, then by numerical-control attenuator and
Amplifier is decayed, is amplified, and 30MHz~2000MHz radiofrequency signal is exported.
Preferably, the transmitting terminal signal processing module successively includes LVDS serioparallel exchange module, I, Q branch mapping mould
Block, formed filter module, sample-rate-conversion module, Digital Up Convert module and D/A module, from the received letter in the port LVDS
Breath sequence first passes through LVDS serioparallel exchange module and carries out serioparallel exchange, is divided into I, Q two-way letter using I, Q branch mapping block
Number, molding filtration, sampling are carried out using formed filter module, sample-rate-conversion module, Digital Up Convert module later
Speed conversion and up-conversion realize the selection of 3KHz-20MHz various bandwidth, finally complete digital-to-analogue conversion and positive intermodulation by D/A module
System, send to analog transmissions channel.
Further, the comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization also includes that simulation receives letter
Road；
The local oscillator unit, which is also used to generate the variable local oscillator of the first reception, the second reception can be changed local oscillator, third receives can be changed
Local oscillator, the 4th receive variable local oscillator, the variable local oscillator of the 5th reception；
The simulation, which receives channel successively and includes, to be received electrically tunable filter group module, receives frequency mixing module for the first time and the
Secondary reception frequency mixing module；The filter received in electrically tunable filter group module comprising seven different frequency ranges, electric tuning
Filter bank block is by the 30MHz~2000MHz radiofrequency signal received according to Frequency Band Selection one filtering where radiofrequency signal
Device is filtered；First time receive frequency mixing module by filtered radiofrequency signal according to the frequency range where radiofrequency signal from the
One receive variable local oscillator, second receive variable local oscillator, third receives variable local oscillator, the 4th receives that variable local oscillator, the 5th receive can
Become this center of percussion selection one to be mixed, exports the medium-and-high freuqncy signal of 400MHz, 800MHz or 1200MHz；It is described to connect for the second time
Frequency mixing module is received for fixing this according to the selection of the frequency of medium-and-high freuqncy signal and the first fixed local oscillator, the second fixed local oscillator, third
One of center of percussion carries out second and is mixed, and the intermediate-freuqncy signal of 70MHz is down-converted to after mixing；
The digital signal processing unit also includes receiving end signal processing module, and receiving end signal processing module is for connecing
Receive the intermediate-freuqncy signal of 70MHz.
Preferably, the reception electrically tunable filter group module also include numerical-control attenuator, either-or switch, 30MHz~
512MHz filtering channel, 500MHz~2000MHz filtering channel and seven select a switch, the 30MHz~2000MHz radio frequency received
Signal first passes around numerical-control attenuator and carries out numerical control attenuation, then by either-or switch according to frequency range where radiofrequency signal from 30MHz
One is selected in~512MHz filtering channel, 500MHz~2000MHz filtering channel to be filtered, and finally selects a switch to believe by seven
It number is filtered according to one filter of Frequency Band Selection where radiofrequency signal.
Preferably, it successively includes amplifier, attenuator and frequency mixer that first time, which receives frequency mixing module, filtered to penetrate
Frequency signal first passes through amplifier and attenuator amplifies, matching attenuation, then by frequency mixer according to the frequency range of radiofrequency signal from
One receive variable local oscillator, second receive variable local oscillator, third receives variable local oscillator, the 4th receives that variable local oscillator, the 5th receive can
Become this center of percussion selection one to be mixed, the medium-and-high freuqncy signal of 400MHz, 800MHz or 1200MHz are exported after mixing.
Preferably, described second receive frequency mixing module successively include amplifier, three elections switch, bandpass filter group,
Three elections switch, numerical-control attenuator, amplifier, frequency mixer, filter, amplifier, numerical-control attenuator, filter, amplifier, five
A switch, five grades of channel width intermediate frequency narrow bandwidths, five is selected to select a switch, amplifier, filter, numerical-control attenuator, amplifier, filter
Wave device, medium-and-high freuqncy signal first pass through amplifier and amplify, then by three elections switch according to the frequency of medium-and-high freuqncy signal from band
In bandpass filter group select a bandpass filter be filtered, then by numerical-control attenuator, amplifier carry out numerical control attenuation,
Amplification, then by frequency mixer fixed local oscillator received with first according to the selection of the frequency of medium-and-high freuqncy signal, second receive fixed local oscillator, the
Three receive second of the mixing of a progress for fixing this center of percussion, the intermediate-freuqncy signal of 70MHz are down-converted to after mixing, using filtering
Device, amplifier, numerical-control attenuator, filter, amplifier be filtered, amplify, filtering, numerical control attenuation, filtering, amplification, then passes through
Cross five select a switch select five grades of channel bandwidth intermediate frequency narrow bandwidths in one grade be filtered, finally by amplifier, filter,
Numerical-control attenuator, amplifier, filter amplify, filter, numerical control attenuation, amplification, the intermediate frequency letter that 70MHz is output to after filtering
Number；Wherein bandpass filter group include three bandpass filters, the center frequency point of three bandpass filters be respectively 400MHz,
800MHz and 1200MHz.
Preferably, the receiving end signal processing module includes A/D module, orthogonal digital down conversion module, digital filtering mould
Block, sample-rate-conversion module, matched filtering module, digital AGC, LVDS parallel serial conversion module, the intermediate-freuqncy signal of 70MHz first pass through
It crosses A/D module and carries out analog-to-digital conversion, then orthogonal digital down conversion module completes Digital Down Convert, using digital filtering module, adopts
Sample speed conversion module, matched filtering module be filtered, sample-rate-conversion, matched filtering, is counted using digital AGC
Word gain finally carries out parallel-serial conversion by LVDS parallel serial conversion module.
Preferably, the local oscillator unit using the phaselocked loop of integrated VCO generate the first fixed local oscillator, the second fixed local oscillator,
Third fixes local oscillator, and the first fixed local oscillator, the second fixed local oscillator, third are fixed after local oscillator difference four function point by three elections switch
Gating output receives channel to two analog transmissions channels and two simulations；
First, which emits variable local oscillator, the variable local oscillator of the second transmitting, third, emits variable local oscillator and is generated by DDS, the 4th transmitting
Variable local oscillator is generated after 2 frequencys multiplication by the variable local oscillator of the first transmitting, and the 5th, which emits variable local oscillator, can be changed this by the second transmitting
Vibration generates after 2 frequencys multiplication；
First, which receives variable local oscillator, the variable local oscillator of the second reception, third, receives variable local oscillator and is generated by DDS, and the 4th receives
Variable local oscillator is generated after 2 frequencys multiplication by the variable local oscillator of the first reception, and the variable local oscillator of the 5th reception is received by second can be changed this
Vibration generates after 2 frequencys multiplication.
The beneficial effects of the present invention are:
1. realize two-way 30MHz~2GHz wide-band, fast frequency-hopped, multimode, output signal level -30dBm~
The reception of the adjustable launch channel of 0dBm, two-way 30MHz~2GHz wide-band, fast frequency-hopped, multimode, dynamic range 110dB is believed
Road can meet and certain phase between multichannel transmitting-receiving and multichannel be needed to need synchronizing function requirement occasion；
2. realizing the reception and transmitting from 30MHz~2GHz wide-band radiofrequency signal, previous radio-frequency module is basic only
Realize the reception and transmitting of tens megahertzs Dao several hundred megahertzs working frequency range radiofrequency signals, the nearly 2GHz working frequency range of the present invention
It receives and transmitting is applicable from VHF wave band, UHF waveband, the various frequency range waveforms of L-band；
3. realizing, channel width 3KHz-20MHz various bandwidth signal bandwidth is configurable, is suitble to matching for different bandwidth waveform
It sets；
4. realizing two-way launch channel and two-way reception channel being per second greater than 100000hop/s frequency hopping speed, can meet
The application of certain fast frequency-hopped waveform functions needs；
5. it is adjustable in -30dBm~0dBm to realize radio frequency output signal level, lever error reaches ± 1dB, meets radio frequency letter
Number in the adjustable needs of 30MHz~2GHz frequency range radio frequency stabilizing output level, realize receive signal can -110dBm~
Receiving channel Linear Amplifer is kept in 0dBm, that is, 110dB dynamic range, signal is undistorted, meet it is certain require communication distance remote,
The needs of the big function waveform of radio wave fading.
Detailed description of the invention
Fig. 1 is the comprehensive radio-frequency module simplified block diagram of 30MHz~2GHz multi-channel wide frequency range generalization.
Fig. 2 is digital signal processing unit functional block diagram.
Fig. 3 is the analog transmissions channel functional block diagram that wide-band multi-mode can configure.
Fig. 4 is that the simulation that wide-band multi-mode can configure receives channel functional block diagram.
Fig. 5 is local oscillator unit functional block diagram.
Fig. 6 is digital transmitting terminal signal processing block diagram.
Fig. 7 is digital receiving terminal signal processing block diagram.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
It is shown in Figure 1, a kind of comprehensive radio frequency mould of 30MHz~2GHz multi-channel wide frequency range generalization shown in the present embodiment
Block by 2 have a lot of social connections the configurable analog transmissions channel of frequency range multi-mode, 2 have a lot of social connections the configurable simulation of frequency range multi-mode receive channel,
Totally 6 units form for local oscillator unit and digital signal processing unit.
(1) local oscillator unit
Shown in Figure 5, local oscillator unit includes that various local oscillators needed for generating 2 tunnel analog transmissions channels and the simulation of 2 tunnels connect
Various local oscillators needed for collection of letters road, wherein needing to provide 3 roads fixed local oscillator: the first fixed local oscillator, the second fixed local oscillator, third are fixed
Local oscillator, after the completion of the first fixed local oscillator, the second fixed local oscillator, the fixed local oscillator of third are using the phaselocked loop of integrated VCO, then respectively four
Channel 1, simulation are received to analog transmissions channel 1, analog transmissions channel 2, simulation by the output of three elections switch gating after function point
Receive channel 2.
The 2 roads 100000hop/s per second that is greater than need to be provided and emit variable local oscillator to analog transmissions channel 1 and 2, emit and can be changed this
Vibration shares 5 sections of compositions, and respectively first, which emits variable local oscillator, the variable local oscillator of the second transmitting, third, emits variable local oscillator, the 4th hair
Penetrate variable local oscillator, the 5th emit variable local oscillator, their stepping is 1KHz, wherein first emits variable local oscillator, the second transmitting can
Change local oscillator, third emit variable local oscillator and are directly generated by DDS, then export after filtering to analog transmissions channel 1 and 2；4th
Emit variable local oscillator, the variable local oscillator of the 5th transmitting passes through again after emitting variable local oscillator, the variable local oscillator of the second transmitting by DDS generation first
After crossing 2 frequencys multiplication, filtering output is to analog transmissions channel 1 and 2.
The 2 roads 100000hop/s reception variable local oscillator per second that is greater than need to be provided and give simulation reception channel 1 and 2, receive and can be changed this
Vibration shares 5 sections of compositions, is that the first reception can be changed local oscillator, the second reception can be changed local oscillator, third receives variable local oscillator, the 4th connects respectively
It receives variable local oscillator and the 5th reception can be changed local oscillator, their steppings are 1KHz, wherein first receives variable local oscillator, the second reception can be changed
Local oscillator, third receive variable local oscillator and are directly generated by DDS, then after filtering after output to simulation receive channel 1 and 2, the 4th
Receive variable local oscillator, the variable local oscillator of the 5th reception passes through again after receiving variable local oscillator, the variable local oscillator of the second reception by DDS generation first
After crossing 2 frequencys multiplication, output receives channel 1 and 2 to simulation after filtering.
Local oscillator unit shares 4 frequency sources, 2 kinds of 5 sections of Fast Frequency Hopping Synthesizers compositions.
(2) analog transmissions channel
Analog transmissions channel using different frequency range be segmented double conversion by the way of realize 70MHz intermediate-freuqncy signal to 30MHz~
The up-conversion of 2GHz radiofrequency signal is added 60dB numerical-control attenuator in Mid Frequency and last radio band and realizes 30MHz~2GHz frequency
Output signal level is adjustable in -30dBm~0dBm in section, and lever error is required up to ± 1dB, the composition of 2 tunnel analog transmissions channels
It is consistent with function, it elaborates below to specific implementation method wherein all the way.
Shown in Figure 3, analog transmissions channel successively includes to emit frequency mixing module, second of transmitting frequency mixing module for the first time
With transmitting electrically tunable filter group module；The first time transmitting frequency mixing module is used for 70MHz intermediate-freuqncy signal according to output frequency
The different selections of rate are mixed with one that the first fixed local oscillator, the second fixed local oscillator, third fix this center of percussion, are exported
The medium-and-high freuqncy signal of 400MHz or 800MHz or 1200MHz；Second of transmitting frequency mixing module is by medium-and-high freuqncy signal further according to output
Frequency difference selects and the variable local oscillator of the first transmitting, the second transmitting can be changed local oscillator, third transmitting can be changed local oscillator, the 4th transmitting can be changed
Local oscillator, the 5th transmitting can be changed second of mixing of a progress of this center of percussion, obtain 30MHz~2000MHz radiofrequency signal；The hair
Include the filter of seven different frequency ranges in radio tuned filter group module, emits electrically tunable filter group module for 30MHz
~2000MHz radiofrequency signal selects a filter to be filtered output according to output frequency.
Transmitting frequency mixing module successively includes filter, amplifier, numerical-control attenuator, frequency mixer, attenuator, amplification for the first time
Device, three elections switch, filter group, three elections switch and amplifier, the 70MHz intermediate-freuqncy signal first pass around filter, put
Big device, numerical-control attenuator carry out intermediate frequency filtering, amplification, numerical control attenuation, then frequency mixer according to the different selections of output frequency with
First fixed local oscillator, the second one fixed among the fixed local oscillator of local oscillator, third are mixed, then pass through attenuator, amplification afterwards
Device carries out decaying matching, amplification, finally passes through three elections switch, filter group, three elections switch and amplifier selection filtering again
The filtering of device group, the medium-and-high freuqncy signal for amplifying output 400MHz or 800MHz or 1200MHz again；Wherein filter group includes three filters
Wave device, the center frequency point of three filters are 400MHz, 800MHz and 1200MHz respectively, and bandwidth is 20MHz.
Second of transmitting frequency mixing module successively includes frequency mixer, numerical-control attenuator and amplifier, and medium-and-high freuqncy signal is first by mixing
Frequency device according to output frequency difference selection first emit variable local oscillator, second emit variable local oscillator, third emits variable local oscillator, the
Four emit variable local oscillator, the 5th transmitting can be changed one of this center of percussion and be mixed, then carried out by numerical-control attenuator and amplifier
Decaying, amplification, export 30MHz~2000MHz radiofrequency signal.
(3) simulation receives channel
Simulation receives channel and realizes that 30MHz~2GHz is penetrated using the side of 30MHz~2GHz different frequency range segmentation double conversion
Frequency signal passes through switch selection intermediate frequency narrow bandwidth 1, intermediate frequency narrow bandwidth in 70MHz Mid Frequency to the down coversion of 70MHz intermediate-freuqncy signal
2, intermediate frequency narrow bandwidth 3, intermediate frequency wide bandwidth 1 and intermediate frequency wide bandwidth 2 intermediate-frequency filter realize channel width intermediate frequency narrow bandwidth 1,
It is selected between intermediate frequency narrow bandwidth 2, intermediate frequency narrow bandwidth 3, intermediate frequency wide bandwidth 1 and intermediate frequency wide bandwidth 2, in radio band and the first Mid Frequency
Each numerical-control attenuator that 31dB is added, the numerical-control attenuator that each 31dB of two-stage is added in output end 70MHz Mid Frequency realize 110dB's
Dynamic range adjustment, the composition that the simulation of 2 tunnels receives channel is consistent with function, makees below to specific implementation method wherein all the way detailed
It describes in detail bright.
Shown in Figure 4, it includes to receive electrically tunable filter group module, receive mixing for the first time that simulation, which receives channel successively,
Module and second of reception frequency mixing module；The filtering received in electrically tunable filter group module comprising seven different frequency ranges
Device receives electrically tunable filter group module for the 30MHz~2000MHz radiofrequency signal received according to frequency range where radiofrequency signal
A filter is selected to be filtered；The first time receives frequency mixing module for filtered radiofrequency signal according to radiofrequency signal institute
Frequency range from first receive variable local oscillator, second receive variable local oscillator, third receives variable local oscillator, the 4th receive it is variable this
Vibration, the 5th reception can be changed this center of percussion selection one and be mixed, and export the medium-and-high freuqncy signal of 400MHz, 800MHz or 1200MHz；
Second of reception frequency mixing module is used to fix this according to the selection of the frequency of medium-and-high freuqncy signal and the first fixed local oscillator, second
Second of mixing of a progress of this center of percussion is fixed in vibration, third, and the intermediate-freuqncy signal of 70MHz is down-converted to after mixing；
Receiving electrically tunable filter group module specifically includes numerical-control attenuator, either-or switch, 30MHz~512MHz filtering
Channel, 500MHz~2000MHz filtering channel and seven select a switch, receive electrically tunable filter group module.The 30MHz received
~2000MHz radiofrequency signal first passes around numerical-control attenuator and carries out numerical control attenuation, then by either-or switch according to radiofrequency signal institute
It selects one from 30MHz~512MHz filtering channel, 500MHz~2000MHz filtering channel in frequency range to be filtered, finally
A switching signal is selected to be filtered according to one filter of Frequency Band Selection where radiofrequency signal by seven.
Receiving frequency mixing module for the first time successively includes amplifier, attenuator and frequency mixer, and filtered radiofrequency signal first passes through
Cross amplifier and attenuator amplify, matching attenuation, then received from first according to the frequency range of radiofrequency signal by frequency mixer variable
Local oscillator, second receive and can be changed local oscillator, third receives variable local oscillator, the 4th receives variable local oscillator, the 5th reception can be changed the choosing of this center of percussion
It selects one to be mixed, the medium-and-high freuqncy signal of 400MHz, 800MHz or 1200MHz is exported after mixing.
Second receive frequency mixing module successively include amplifier, three elections switch, bandpass filter group, three elections switch,
Numerical-control attenuator, amplifier, frequency mixer, filter, amplifier, numerical-control attenuator, filter, amplifier, five select a switch, five
Shelves channel width intermediate frequency narrow bandwidth, five select a switch, amplifier, filter, numerical-control attenuator, amplifier, filter, high intermediate frequency
Signal first passes through amplifier and amplifies, then by three elections switch according to the frequency of medium-and-high freuqncy signal from bandpass filter group
It selects a bandpass filter to be filtered, numerical control attenuation, amplification is then carried out by numerical-control attenuator, amplifier, then by mixing
Frequency device receives fixed local oscillator, the fixed local oscillator of the second reception, third with first according to the selection of the frequency of medium-and-high freuqncy signal and receives and fix
One of this center of percussion carries out second and is mixed, and the intermediate-freuqncy signal of 70MHz is down-converted to after mixing, using filter, amplifier,
Numerical-control attenuator, filter, amplifier be filtered, amplify, filtering, numerical control attenuation, filtering, amplification, selects one to open using five
One grade closed in five grades of channel bandwidth intermediate frequency narrow bandwidths of selection is filtered, and finally passes through amplifier, filter, numerical control attenuation
Device, amplifier, filter amplify, filter, numerical control attenuation, amplification, the intermediate-freuqncy signal that 70MHz is output to after filtering；Wherein
Bandpass filter group include three bandpass filters, the center frequency point of three bandpass filters be respectively 400MHz, 800MHz and
1200MHz, bandwidth are 20MHz.
(4) digital signal processing unit
The digital signal processing unit is mainly made of FPGA, 2 tunnel high-speed ADs, 2 tunnel high speed D/As, 2 road LVDS etc., former
Reason block diagram is shown in Fig. 2, completes following functions:
1. transmitting terminal signal processing module completes digital bit stream modulates information, pulse-shaping, sampling rate in FPGA
The operation such as transformation, Digital Up Convert, realizes 3KHz-20MHz various bandwidth signal processing, finally completes digital-to-analogue by high speed D/A and turns
It changes；
2. receiving end signal processing module completes analog signal digital by high-speed AD, in FPGA to digitized signal into
Row channel filtering and sample-rate-conversion are, it can be achieved that bandwidth is 3KHz-20MHz various bandwidth signal processing；
3. digitised Intermediate Frequency LVDS differential serial is output and input；
4. local oscillator controls；
5. and the functions such as main controller data exchange.
Shown in Figure 6, the transmitting terminal signal processing module successively includes that LVDS serioparallel exchange module, I, Q branch are reflected
Module, formed filter module, sample-rate-conversion module, Digital Up Convert module and D/A module are penetrated, is received from the port LVDS
Information sequence first pass through LVDS serioparallel exchange module carry out serioparallel exchange, be divided into I, Q two-way using I, Q branch mapping block
Signal carries out molding filtration using formed filter module, sample-rate-conversion module, Digital Up Convert module later, adopts
Sample speed conversion and up-conversion realize the selection of 3KHz-20MHz various bandwidth, finally complete digital-to-analogue conversion and orthogonal by D/A module
Modulation, send to analog transmissions channel.
Shown in Figure 7, receiving end signal processing module includes A/D module, orthogonal digital down conversion module, digital filtering
The intermediate-freuqncy signal of module, sample-rate-conversion module, matched filtering module, digital AGC, LVDS parallel serial conversion module, 70MHz is first
By A/D module carry out analog-to-digital conversion, then orthogonal digital down conversion module complete Digital Down Convert, using digital filtering module,
Sample-rate-conversion module, matched filtering module be filtered, sample-rate-conversion, matched filtering, and signal sampling rate is become
For 4 or 8 sampled points of a symbol period, may be implemented by the filter parameter for being arranged different to 3KHz to 20MHz's
Various bandwidth signal processing.To improve dynamic range of signals, it is also added into digital AGC unit here.Finally pass through LVDS and goes here and there
Conversion module carries out parallel-serial conversion.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (10)
1. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, includes analog transmissions channel, local oscillator unit
And digital signal processing unit, it is characterised in that:
The digital signal processing unit includes transmitting terminal signal processing module, and the transmitting terminal signal processing module is for exporting
70MHz intermediate-freuqncy signal is to analog transmissions channel；
The local oscillator unit can be changed this for the fixed local oscillator of generation first, the second fixed local oscillator, the fixed local oscillator of third, the first transmitting
Vibration, second emit variable local oscillator, third emits variable local oscillator, the 4th emits variable local oscillator and the 5th and emit variable local oscillator, first
Emit variable local oscillator, second emit variable local oscillator, third emits variable local oscillator, the 4th to emit variable local oscillator, the 5th transmitting variable
The stepping that local oscillator emits variable local oscillator is 1KHz；
The analog transmissions channel successively includes transmitting frequency mixing module, second of transmitting frequency mixing module and transmitting electric tuning for the first time
Filter bank block；The first time transmitting frequency mixing module is used to select 70MHz intermediate-freuqncy signal according to the difference of output frequency
One for fixing this center of percussion with the first fixed local oscillator, the second fixed local oscillator, third is mixed, export 400MHz or 800MHz or
The medium-and-high freuqncy signal of 1200MHz；Second transmitting frequency mixing module is by medium-and-high freuqncy signal further according to output frequency difference selection and the
One emit variable local oscillator, second emit variable local oscillator, third emits variable local oscillator, the 4th emits variable local oscillator, the 5th transmitting can
One for becoming this center of percussion carries out second of mixing, obtains 30MHz~2000MHz radiofrequency signal；The transmitting electrically tunable filter
It include the filter of seven different frequency ranges in group module, transmitting electrically tunable filter group module believes 30MHz~2000MHz radio frequency
Number according to output frequency select a filter be filtered output.
2. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 1
Emitting frequency mixing module in the first time successively includes filter, amplifier, numerical-control attenuator, frequency mixer, attenuator, amplification
Device, three elections switch, filter group, three elections switch and amplifier, the 70MHz intermediate-freuqncy signal first pass around filter, put
Big device, numerical-control attenuator carry out intermediate frequency filtering, amplification, numerical control attenuation, then frequency mixer according to the different selections of output frequency with
First fixed local oscillator, the second one fixed among the fixed local oscillator of local oscillator, third are mixed, then pass through attenuator, amplification afterwards
Device carries out decaying matching, amplification, finally passes through three elections switch, filter group, three elections switch and amplifier selection filtering again
The filtering of device group, the medium-and-high freuqncy signal for amplifying output 400MHz or 800MHz or 1200MHz again；Wherein filter group includes three filters
Wave device, the center frequency point of three filters are 400MHz, 800MHz and 1200MHz respectively, and bandwidth is 20MHz.
3. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 1
It successively include frequency mixer, numerical-control attenuator and amplifier in second of transmitting frequency mixing module, medium-and-high freuqncy signal is first by being mixed
Device emits variable local oscillator, the variable local oscillator of the second transmitting, third according to output frequency difference selection first and emits variable local oscillator, the 4th
Emit variable local oscillator, the 5th transmitting can be changed one of this center of percussion and be mixed, then declines by numerical-control attenuator and amplifier
Subtract, amplify, exports 30MHz~2000MHz radiofrequency signal.
4. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 1
In the transmitting terminal signal processing module successively include LVDS serioparallel exchange module, I, Q branch mapping block, formed filter mould
Block, sample-rate-conversion module, Digital Up Convert module and D/A module, from the port LVDS, received information sequence is first passed through
LVDS serioparallel exchange module carry out serioparallel exchange, be divided into I, Q two paths of signals using I, Q branch mapping block, later using
Formed filter module, sample-rate-conversion module, Digital Up Convert module carry out molding filtration, sample-rate-conversion and upper change
Frequently, it realizes the selection of 3KHz-20MHz various bandwidth, digital-to-analogue conversion and orthogonal modulation is finally completed by D/A module, send to simulation and send out
Penetrate channel.
5. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 1
In also comprising simulation reception channel；
The local oscillator unit is also used to generate the variable local oscillator of the first reception, the second reception can be changed local oscillator, third receives variable local oscillator,
4th receives variable local oscillator, the variable local oscillator of the 5th reception；
It includes to receive electrically tunable filter group module, receive frequency mixing module and second for the first time that the simulation, which receives channel successively,
Receive frequency mixing module；The filter received in electrically tunable filter group module comprising seven different frequency ranges, electric tuning filtering
Device group module by the 30MHz~2000MHz radiofrequency signal received according to one filter of Frequency Band Selection where radiofrequency signal into
Row filtering；The first time receives frequency mixing module and connects filtered radiofrequency signal from first according to the frequency range where radiofrequency signal
It receives and can be changed local oscillator, the second reception can be changed local oscillator, the variable local oscillator of third reception, the 4th reception can be changed local oscillator, the 5th reception can be changed this
Center of percussion selects one and is mixed, and exports the medium-and-high freuqncy signal of 400MHz, 800MHz or 1200MHz；Second of reception is mixed
Frequency module is used to fix this center of percussion according to the selection of the frequency of medium-and-high freuqncy signal and the first fixed local oscillator, the second fixed local oscillator, third
One carry out second and be mixed, the intermediate-freuqncy signal of 70MHz is down-converted to after mixing；
The digital signal processing unit also includes receiving end signal processing module, and receiving end signal processing module is for receiving
The intermediate-freuqncy signal of 70MHz.
6. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 5
It also include that numerical-control attenuator, either-or switch, 30MHz~512MHz filtering are logical in the reception electrically tunable filter group module
Road, 500MHz~2000MHz filtering channel and seven select a switch, and the 30MHz~2000MHz radiofrequency signal received first passes around
Numerical-control attenuator carries out numerical control attenuation, then is filtered according to frequency range where radiofrequency signal from 30MHz~512MHz by either-or switch
One is selected in channel, 500MHz~2000MHz filtering channel to be filtered, and finally selects a switching signal to be believed according to radio frequency by seven
One filter of Frequency Band Selection where number is filtered.
7. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 5
Receiving frequency mixing module in the first time successively includes amplifier, attenuator and frequency mixer, and filtered radiofrequency signal first passes through
Amplifier and attenuator amplify, matching attenuation, then by frequency mixer according to the frequency range of radiofrequency signal from first receive it is variable this
Vibration, second receive and can be changed local oscillator, third receives variable local oscillator, the 4th receives variable local oscillator, the 5th reception can be changed the selection of this center of percussion
One is mixed, and the medium-and-high freuqncy signal of 400MHz, 800MHz or 1200MHz are exported after mixing.
8. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 5
Receiving frequency mixing module in described second successively includes amplifier, three elections switch, bandpass filter group, three elections switch, number
Control attenuator, amplifier, frequency mixer, filter, amplifier, numerical-control attenuator, filter, amplifier, five select a switch, five grades
Channel width intermediate frequency narrow bandwidth, five select a switch, amplifier, filter, numerical-control attenuator, amplifier, filter, high intermediate frequency letter
Number first passing through amplifier amplifies, then is selected from bandpass filter group by three elections switch according to the frequency of medium-and-high freuqncy signal
It selects a bandpass filter to be filtered, numerical control attenuation, amplification is then carried out by numerical-control attenuator, amplifier, then by being mixed
Device receives fixed local oscillator with the fixed local oscillator of the first reception, second according to the selection of the frequency of medium-and-high freuqncy signal, third receives and fixes this
One of center of percussion carries out second and is mixed, and the intermediate-freuqncy signal of 70MHz is down-converted to after mixing, using filter, amplifier, number
Control attenuator, filter, amplifier be filtered, amplify, filtering, numerical control attenuation, filtering, amplification, selects a switch using five
Select one grade in five grades of channel bandwidth intermediate frequency narrow bandwidths to be filtered, finally by amplifier, filter, numerical-control attenuator,
Amplifier, filter amplify, filter, numerical control attenuation, amplification, the intermediate-freuqncy signal that 70MHz is output to after filtering；Wherein band logical
Filter group include three bandpass filters, the center frequency point of three bandpass filters be respectively 400MHz, 800MHz and
1200MHz。
9. a kind of comprehensive radio-frequency module of 30MHz~2GHz multi-channel wide frequency range generalization, feature exist according to claim 5
Include A/D module, orthogonal digital down conversion module, digital filtering module, sample-rate-conversion mould in receiving end signal processing module
Block, matched filtering module, digital AGC, LVDS parallel serial conversion module, the intermediate-freuqncy signal of 70MHz first pass through A/D module and carry out modulus
Conversion, then orthogonal digital down conversion module complete Digital Down Convert, using digital filtering module, sample-rate-conversion module,
Matched filtering module is filtered, sample-rate-conversion, matched filtering are finally passed through using digital AGC progress digital gain
LVDS parallel serial conversion module carries out parallel-serial conversion.
10. the comprehensive radio-frequency module of a kind of 30MHz~2GHz multi-channel wide frequency range generalization according to claim 5, feature
It is that the local oscillator unit generates the first fixed local oscillator, the second fixed local oscillator, third using the phaselocked loop of integrated VCO and fixes this
Vibration, the first fixed local oscillator, the second fixed local oscillator, the fixed local oscillator of third distinguish after four function point by the output of three elections switch gating to
Two analog transmissions channels and two simulations receive channel；
First, which emits variable local oscillator, the variable local oscillator of the second transmitting, third, emits variable local oscillator and is generated by DDS, and the 4th transmitting can be changed
Local oscillator emits variable local oscillator by first and generates after 2 frequencys multiplication, and the 5th, which emits variable local oscillator, emits variable local oscillator warp by second
It is generated after crossing 2 frequencys multiplication；
First reception can be changed local oscillator, the second reception can be changed local oscillator, third reception can be changed local oscillator and be generated by DDS, and the 4th reception can be changed
Local oscillator receives variable local oscillator by first and generates after 2 frequencys multiplication, and the 5th, which receives variable local oscillator, receives variable local oscillator warp by second
It is generated after crossing 2 frequencys multiplication.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200450A (en) * | 2020-01-08 | 2020-05-26 | 中国电子科技集团公司电子科学研究院 | Broadband software reconfigurable radio frequency device and buoy |
| CN112260979A (en) * | 2020-10-22 | 2021-01-22 | 电子科技大学 | Multichannel parallel segmented modulation method |
| CN112600573A (en) * | 2020-11-10 | 2021-04-02 | 北京遥测技术研究所 | L or S frequency band can dispose miniaturized multichannel high power digital transmitting component |
| CN113225022A (en) * | 2021-04-30 | 2021-08-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Ultra-wideband up-converter |
| CN113872633A (en) * | 2021-11-18 | 2021-12-31 | 中国航空无线电电子研究所 | UV wave band broadband reconfigurable transceiver |
| CN114710121A (en) * | 2022-03-25 | 2022-07-05 | 北京中科飞鸿科技股份有限公司 | Ultra-wideband miniaturized up-down converter |
| CN115021801A (en) * | 2022-08-09 | 2022-09-06 | 沈阳航盛科技有限责任公司 | Digital-analog hybrid high-speed frequency hopping method of airborne satellite communication antenna |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121261A1 (en) * | 2009-04-17 | 2010-10-21 | Maxlinear, Inc. | Wideband tuner architecture |
| CN102185662A (en) * | 2011-01-05 | 2011-09-14 | 东南大学 | High-frequency-band broadband multi-channel upward and downward frequency conversion module |
| CN104168001A (en) * | 2014-05-27 | 2014-11-26 | 北京遥测技术研究所 | Eight-channel gain-controllable down converter |
| WO2016015219A1 (en) * | 2014-07-29 | 2016-02-04 | 华为技术有限公司 | Transceiver |
| CN106788511A (en) * | 2016-12-30 | 2017-05-31 | 北京时代民芯科技有限公司 | A kind of wideband radio receiver |
| CN107819489A (en) * | 2017-11-23 | 2018-03-20 | 中国电子科技集团公司第四十研究所 | A kind of ultra wide band high bandwidth radio-frequency receiving-transmitting two-way integral integration module |
| CN107888276A (en) * | 2017-11-14 | 2018-04-06 | 中国电子科技集团公司第五十四研究所 | A kind of Multiband-multimode modulation-demodulation device |
-
2018
- 2018-10-18 CN CN201811214751.8A patent/CN109600143B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121261A1 (en) * | 2009-04-17 | 2010-10-21 | Maxlinear, Inc. | Wideband tuner architecture |
| CN102185662A (en) * | 2011-01-05 | 2011-09-14 | 东南大学 | High-frequency-band broadband multi-channel upward and downward frequency conversion module |
| CN104168001A (en) * | 2014-05-27 | 2014-11-26 | 北京遥测技术研究所 | Eight-channel gain-controllable down converter |
| WO2016015219A1 (en) * | 2014-07-29 | 2016-02-04 | 华为技术有限公司 | Transceiver |
| CN106788511A (en) * | 2016-12-30 | 2017-05-31 | 北京时代民芯科技有限公司 | A kind of wideband radio receiver |
| CN107888276A (en) * | 2017-11-14 | 2018-04-06 | 中国电子科技集团公司第五十四研究所 | A kind of Multiband-multimode modulation-demodulation device |
| CN107819489A (en) * | 2017-11-23 | 2018-03-20 | 中国电子科技集团公司第四十研究所 | A kind of ultra wide band high bandwidth radio-frequency receiving-transmitting two-way integral integration module |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200450A (en) * | 2020-01-08 | 2020-05-26 | 中国电子科技集团公司电子科学研究院 | Broadband software reconfigurable radio frequency device and buoy |
| CN112260979A (en) * | 2020-10-22 | 2021-01-22 | 电子科技大学 | Multichannel parallel segmented modulation method |
| CN112260979B (en) * | 2020-10-22 | 2022-02-01 | 电子科技大学 | Multichannel parallel segmented modulation method |
| CN112600573A (en) * | 2020-11-10 | 2021-04-02 | 北京遥测技术研究所 | L or S frequency band can dispose miniaturized multichannel high power digital transmitting component |
| CN112600573B (en) * | 2020-11-10 | 2022-05-06 | 北京遥测技术研究所 | L or S frequency band can dispose miniaturized multichannel high power digital transmitting component |
| CN113225022A (en) * | 2021-04-30 | 2021-08-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Ultra-wideband up-converter |
| CN113872633A (en) * | 2021-11-18 | 2021-12-31 | 中国航空无线电电子研究所 | UV wave band broadband reconfigurable transceiver |
| CN114710121A (en) * | 2022-03-25 | 2022-07-05 | 北京中科飞鸿科技股份有限公司 | Ultra-wideband miniaturized up-down converter |
| CN114710121B (en) * | 2022-03-25 | 2024-01-26 | 北京中科飞鸿科技股份有限公司 | Ultra-wideband miniaturized up-down converter |
| CN115021801A (en) * | 2022-08-09 | 2022-09-06 | 沈阳航盛科技有限责任公司 | Digital-analog hybrid high-speed frequency hopping method of airborne satellite communication antenna |
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