CN205265694U - Four -channel radio frequency module's optimization device - Google Patents
Four -channel radio frequency module's optimization device Download PDFInfo
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- CN205265694U CN205265694U CN201521138376.5U CN201521138376U CN205265694U CN 205265694 U CN205265694 U CN 205265694U CN 201521138376 U CN201521138376 U CN 201521138376U CN 205265694 U CN205265694 U CN 205265694U
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Abstract
The utility model discloses a four -channel radio frequency module's optimization device, this kind of four -channel radio frequency module's optimization device, including positive galley and rear surface printing version, positive galley divide into four and separates the chamber, is used for installing the radio -frequency channel module respectively, obtains first passageway radio frequency module, second channel radio frequency module, third passageway radio frequency module, four -channel radio frequency module in proper order, first passageway radio frequency module, second channel radio frequency module, third passageway radio frequency module, four -channel radio frequency module are used for respectively realizing that the enlargeing of radiofrequency signal, filtering, gain control or down coversion handle, the rear surface printing version is the frequency synthesizer module, the frequency synthesizer module is used for carrying on providing the four ways homologous local oscillator signal when the down coversion is handled for first passageway radio frequency module, second channel radio frequency module, third passageway radio frequency module, four -channel radio frequency module to through the phase place of adjustment local oscillator signal, make the output signal phase coincidence of four ways radio -frequency channel.
Description
Technical field
The utility model belongs to electronics and the communications field, particularly a kind of optimization of four-way radio-frequency moduleDevice.
Background technology
Under complex electromagnetic environment, single channel radiofrequency signal poor anti jamming capability, makes single channel radio frequency letterNumber processing module anti-disturb more and channel damage ability does not meet and sets requirement, the grinding of current association areaStudy carefully personnel and realized anti-many interference performances of four-way radiofrequency signal and the raising of channel damage ability simultaneously,But while still existing four-way radiofrequency signal to work simultaneously amplitude-phase consistency with and width mutually dry between mutuallyThe problem of disturbing.
Utility model content
For above-mentioned existing problems, the purpose of this utility model is to propose a kind of four-way radio-frequency moduleOptimization device, the optimization device of this kind of four-way radio-frequency module adopts Modular Structure Design, and just take,Anti-two sides cavity body structure, makes four radio-frequency channel, tunnel output signals meet phase equalization requirement, and energyEnough reduce the phase mutual interference between output signal width phase.
For reaching above-mentioned technical purpose, the utility model adopts following technical scheme to be achieved.
An optimization device for four-way radio-frequency module, comprises positive galley and back face printing version, described inPositive galley is divided into four separate spaces, is respectively used to install radio-frequency channel module, obtains successively first passageRadio-frequency module, second channel radio-frequency module, third channel radio-frequency module, four-way radio-frequency module, instituteStating first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module, four-way penetratesFrequency module is respectively used to amplification, filtering, gain control and the down-converted of respective channel radiofrequency signal;Described back face printing version is frequency synthesizer module, and described frequency synthesizer module is for first passage radio frequencyModule, second channel radio-frequency module, third channel radio-frequency module and four-way radio-frequency module carry out lower changeWhile frequently processing, correspondence provides the local oscillation signal of four tunnel homologies.
Further improvement of the utility model part is:
Described first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module, the 4thIn passage radio-frequency module, each passage radio-frequency module is by housing unit, the printed board with element, connecting lineCable composition, wherein integrated power supply line and high-frequency socket on the panel of housing unit; Described high-frequency socketComprise: four radio frequency input sockets and four intermediate frequency accessory power outlets.
The beneficial effects of the utility model: the utility model simplicity of design, cost is low, easy to operate. AdoptUse four-way radio-frequency technique, for anti-interference process and Base-Band Processing provide hardware platform, can realize anti-threeRoad wideband interferer signal ability, and there is radio-frequency channel backup capabilities, as long as also have one in four passagesPassage is normally worked, and end product all can effectively be realized location navigation function, meets the height of Big Dipper signalEffect receives requirement.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the radio-frequency module structure in the optimization device of a kind of four-way radio-frequency module of the present utility modelSchematic diagram;
Fig. 2 is the circuit block diagram that radio-frequency module function realizes;
Fig. 3 is the optimization device Power supply connection layout of a kind of four-way radio-frequency module of the present utility model;
Fig. 4 is that the function of frequency synthesizer module realizes schematic diagram.
Detailed description of the invention
With reference to Fig. 1, it is the radio-frequency module in the optimization device of a kind of four-way radio-frequency module of the present utility modelStructural representation; An optimization device for four-way radio-frequency module, comprises positive galley and back face printingVersion, described positive galley is divided into four separate spaces, is respectively used to install radio-frequency channel module, obtains successivelyFirst passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module, four-way radio frequencyModule, described first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module,Four-way radio-frequency module is respectively used to realize amplification, filtering, gain control or the down coversion place of radiofrequency signalReason; Described back face printing version is frequency synthesizer module, and described frequency synthesizer module is for first passageRadio-frequency module, second channel radio-frequency module, third channel radio-frequency module, four-way radio-frequency module carry outWhen down-converted, correspondence provides the local oscillation signal of four tunnel homologies, and by adjusting the phase place of local oscillation signal,Can make the output signal of four radio-frequency channels, tunnel meet phase equalization.
Particularly, with reference to Fig. 2, be the circuit block diagram of radio-frequency module function realization; Wherein, described radio frequencyModule is first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module or four-wayRoad radio-frequency module; First passage radio-frequency module in the present embodiment, second channel radio-frequency module, threewayIn road radio-frequency module, four-way radio-frequency module, each passage radio-frequency module comprises limiter tube, first and is situated betweenMatter wave filter, low-noise amplifier, second medium wave filter, radio frequency amplifier, the control of radio frequency automatic gainSystem (AGC) unit, SAW filter, frequency mixer, local oscillator, passive (LC) wave filter, intermediate frequency putLarge device, intermediate-frequency filter, wave detector, voltage-controlled attenuator and operational amplifier.
Radio frequency automatic gain control (AGC) unit comprise the first control input end, the second control input end andControl output end; Wave detector comprises detection input, the first detection output and the second detection output;Frequency mixer comprises first input end, the second input and output; It is defeated that intermediate frequency amplifier comprises the first intermediate frequencyGo out end, the second medium frequency output end and input; Operational amplifier comprises the first computing input, the second fortuneCalculate input and computing output; The input of limiter tube output electrical connection first medium wave filter, theThe output of the output electrical connection low-noise amplifier of one dielectric filter, the input of low-noise amplifierThe input of end electrical connection second medium wave filter, the output electrical connection radio frequency of second medium wave filter is putThe input of large device, output electrical connection radio frequency automatic gain control (AGC) unit of radio frequency amplifierThe first control input end, the control output end electrical connection sound table filter of radio frequency automatic gain control (AGC) unitThe input of ripple device, the first input end of the output electrical connection frequency mixer of SAW filter, local oscillator defeatedGo out the second input of end electrical connection frequency mixer, output electrical connection passive (LC) wave filter of frequency mixerInput, the input of the output electrical connection intermediate frequency amplifier of passive (LC) wave filter, intermediate frequency is putThe input of the first medium frequency output end electrical connection intermediate-frequency filter of large device, the second intermediate frequency of intermediate frequency amplifierThe detection input of output electrical connection wave detector, the first detection output electrical connection computing of wave detector is putThe first computing input of large device, the input of the second detection output electrical connection voltage controlled oscillator of wave detectorEnd, the second computing input of the output electrical connection operational amplifier of voltage controlled oscillator, operational amplifierThe second control input end of computing output electrical connection radio frequency automatic gain control (AGC) unit.
First radiofrequency signal enters limiter tube, obtains the radiofrequency signal through limiter tube, and limiter tube is for limitThe signal strength signal intensity of radiofrequency signal processed can not burnt channel; First medium wave filter is for reducing process limiter tubeThe decay of radiofrequency signal, obtain the first filtering radiofrequency signal, low-noise amplifier is for reducing the first filterThe channel noise of ripple radiofrequency signal, obtains low noise filtering radiofrequency signal, second medium wave filter for reducingThe decay of low noise filtering radiofrequency signal, obtains the second low noise filtering radiofrequency signal, the second low noise filtering radio frequencySignal carries out radio frequency amplification, single through radio frequency automatic gain control (AGC) through radio frequency amplifier more successivelyUnit avoids non-linear distortion, and then obtains radio frequency amplifying signal, and SAW filter enters radio frequency amplifying signalRow frequency-selective filtering, is met and sets the radiofrequency signal requiring, and frequency mixer sets to meeting the radio frequency requiringSignal and local oscillator are carried out Frequency mixing processing, obtain mixed radiofrequency signal, and passive (LC) wave filter is for improvingThe matching degree of mixed radiofrequency signal and intermediate frequency amplifier, then will penetrate through the mixing of passive (LC) wave filterFrequency signal is sent to intermediate frequency amplifier and carries out intermediate frequency amplification, obtains intermediate-freuqncy signal, and intermediate-frequency filter is in thisFrequently signal carries out bandwidth, fluctuation and Out-of-band rejection, obtains useful intermediate-freuqncy signal, and by this useful intermediate frequency letterNumber output; Wave detector for detection of the magnitude of voltage of this intermediate-freuqncy signal whether higher than setting voltage value; Work as intermediate frequencyThe magnitude of voltage of signal is during higher than setting voltage value, and voltage-controlled attenuator is according to the operational amplifier feedback electricity of settingPress off and begin to intermediate-freuqncy signal adjustments that gain, guarantee intermediate-freuqncy signal is linearity, then will be operated in linear modelIntermediate-freuqncy signal in enclosing feeds back to radio frequency automatic gain control (AGC) unit by operational amplifier, guaranteesDescribed intermediate-freuqncy signal is linear; Wherein, described limiter tube, selects Skyworks company model to beThe limiter tube of SMP1330-007LF.
Described low-noise amplifier, selects the low-noise amplifier that Avago company model is MGA-635P8.
Described local oscillator, is the first local oscillator, the second local oscillator, the 3rd local oscillator or the 4th local oscillator, and is firstPassage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module or four-way radio-frequency moduleLocal oscillation signal is provided.
Described wave detector, selects the AD8361 wave detector of AD company.
Described voltage-controlled attenuator, selects the RFSA2013 voltage-controlled attenuator of RFMD company.
Described operational amplifier, selects the MAX4452 operational amplifier of Maxim company.
With reference to Fig. 3, for the optimization device Power supply of a kind of four-way radio-frequency module of the present utility model connectsFigure; Described local oscillator comprises the first local oscillator, the second local oscillator, the 3rd local oscillator and the 4th local oscillator; The utility modelA kind of four-way radio-frequency module implement device also comprise voltage module, the input voltage of voltage module is20V～28V, and adopt the LMZ14203TZ-ADJ chip of NSC company to realize 5V output, be first passageRadio-frequency module, second channel radio-frequency module, third channel radio-frequency module and four-way radio-frequency module are respectivelyPower supply; Adopt the TPS79333DBVR chip of TI company that this 5V voltage is turned to 3.3V, be respectively frequency and closeGrow up to be a useful person and crystal oscillator power supply, the frequency of crystal oscillator is 10MHz, in addition, described 3.3V be respectively the first local oscillator,The second local oscillator, the 3rd local oscillator and the power supply of the 4th local oscillator.
In the time that radiofrequency signal is inputted, antenna is connected to the input socket of radiofrequency signal, then power-onGet final product work; Wherein, the operational amplifier feedback voltage of setting is lower than 4V, the adjustment that described gain is adjustedScope is 0dB-30dB;
Particularly, the radiofrequency signal that described satisfied setting requires, is the radiofrequency signal of three dB bandwidth; DescribedLimiter tube has advantages of that narrow bandwidth, Insertion Loss are little, can greatly reduce signal attenuation, reduces in channelSpuious and Out-of-band rejection; The present embodiment is selected the amplitude limit that Skyworks company model is SMP1330-007LFPipe, for ensure radio-frequency module function realize circuit in the time receiving large radiofrequency signal, can not burn letterRoad; Described large radiofrequency signal, its signal strength range is+20dBm-+30dBm; Signal strength signal intensity is+20dBmRadiofrequency signal its signal intensity attenuation 8.8dB after limiter tube; Signal strength signal intensity is+penetrating when 30dBmFrequently signal its signal intensity attenuation 14dB after limiter tube; Low-noise amplifier is selected Avago company typeNumber be the low-noise amplifier of MGA-635P8, the noise coefficient of this low-noise amplifier is 0.56dB, canReduce greatly channel noise.
Radiofrequency signal enters first medium wave filter and second medium for twice before and after entering low-noise amplifierWave filter, first medium wave filter and second medium wave filter have advantages of that respectively narrow bandwidth, Insertion Loss are little,Can greatly reduce signal attenuation, spuious, Out-of-band rejection in channel are met the demands.
For avoiding strong signal to cause the non-linear distortion of receiving path, path adopts automatic gain control (AGC)Design cell, this automatic gain control (AGC) design cell is put by wave detector, voltage-controlled attenuator, computingLarge device composition, wave detector is selected the AD8361 wave detector of AD company, and voltage-controlled attenuator is selected RFMD companyRFSA2013 voltage-controlled attenuator, operational amplifier is selected the MAX4452 operational amplifier of Maxim company;Adopt voltage-controlled attenuator to adjust the feedback voltage of operational amplifier, can greatly reduce channel work difficulty,Make the function of AGC design cell simple and easy to control.
Start intermediate-freuqncy signal to gain according to the operational amplifier feedback voltage of setting at voltage-controlled attenuatorIn the process of adjusting, what wave detector detected intermediate-freuqncy signal starts to control a power, if the starting to control a little of intermediate-freuqncy signalPower is slightly larger than a power that starts to control of setting, regulates voltage-controlled attenuator, makes the power output of intermediate-freuqncy signalBe stabilized in and start to control a little; If the power output of intermediate-freuqncy signal is not subject to resistance value control, and the output of wave detectorTerminal voltage, not in a power 0.7V left and right of starting to control of setting, strengthens the input power of radiofrequency signal, andWhether the output voltage of observing wave detector changes, if the output voltage of wave detector does not change, may beWave detector damages, and must change another wave detector; If the output voltage of wave detector changes, then observe and pressWhether the voltage of controlling attenuation device and operational amplifier junction changes with the rotation of voltage-controlled attenuator, if pressThe voltage of controlling attenuation device and operational amplifier junction does not change with the rotation of voltage-controlled attenuator, sentencesDetermine voltage-controlled attenuator fault, change another voltage-controlled attenuator, after gain has been adjusted, by voltage-controlled decayDevice point glue is fixed.
With reference to Fig. 4, for the function of frequency synthesizer module realizes schematic diagram; Frequency synthesizer module comprises crystalline substanceShake, a LC wave filter, frequency synthesizer, single-chip microcomputer, the first radio frequency amplifier, the 2nd LC filteringDevice, power splitter, the second power splitter, the 3rd power splitter first; Frequency synthesizer comprise frequency output terminal,First frequency input and second frequency input; Power splitter comprises merit and divides input, the first merit to divide firstOutput and the second merit are divided output; Crystal oscillator output electrical connection the one LC filter input end, a LCThe first frequency input of filter output electrical connection frequency synthesizer, the electrical connection of single-chip microcomputer output frequentlyThe second input of rate synthesizer, the frequency output terminal that frequency synthesizer comprises is electrically connected the first radio frequency and amplifiesDevice input, the input of the first radio frequency amplifier output electrical connection the 2nd LC wave filter, the 2nd LCThe output of wave filter is electrically connected the merit of power splitter first and divides input, and the first merit of power splitter is divided defeated firstGo out end and the second merit and divide output, be electrically connected respectively the defeated of the input of the second power splitter and the 3rd power splitterEnter end.
Frequency synthesizer in the present embodiment adopts the SI4133-BT frequency synthesizer of Silicon company,Single-chip microcomputer adopts the PIC12F629-I/SN of Microchip company; Wherein, SI4133-BT frequency synthesisDevice is digital phase-lock frequency synthesizer, comprises 3 road phaselocked loop (PLL) circuit, wherein each road phaselocked loop(PLL) circuit is by phase detectors (PD), loop filter (LF), voltage controlled oscillator (VCO) and canProgramming frequency division device forms.
Crystal oscillator provides 10MHz as with reference to frequency signal, and a LC wave filter is for reference frequency signalOne or many harmonic wave, obtain the frequency signal through LC filtering, single-chip microcomputer is sent out programmable frequency dividerSend divider ratio, the divider ratio that programmable frequency divider sends over according to single-chip microcomputer is to filtering wave frequency through LCSignal carries out frequency programmable dividing, obtains frequency synthesizer and carry out the required frequency of frequency division, frequency synthesizer certificateThis,, to carrying out frequency division through the frequency signal of LC filtering, obtains standard-frequency signal, then standard frequency letterThe frequency signal of number exporting after voltage controlled oscillator carries out phase bit comparison in phase detectors, then passes throughLoop filter produces loop-locking control voltage, and this loop-locking control voltage adds by loop filterTo voltage controlled oscillator, just can the signal of voltage controlled oscillator output be controlled and be proofreaied and correct, until loopTill wave filter is locked, now frequency synthesizer output local oscillation signal, the first radio frequency amplifier is to local oscillatorSignal carries out being sent to the 2nd LC wave filter after radio frequency amplification again and carries out path coupling, so obtain homology thisThe signal that shakes, is sent to merit filter-divider first by homology local oscillation signal and produces two-way homology local oscillation signal, thenDescribed two-way homology local oscillation signal is sent to respectively to the second power splitter and the 3rd power splitter, and generation four tunnels are sameSource local oscillation signal, described four tunnel homology local oscillation signals offer respectively first passage radio-frequency module, second and lead toRoad radio-frequency module, third channel radio-frequency module and four-way radio-frequency module, provide respectively radio frequency path.
Particularly, frequency synthesizer also comprises first passage radio-frequency module, second channel radio-frequency module,The each self-corresponding local oscillation signal line of triple channel radio-frequency module and four-way radio-frequency module, described local oscillation signalLine adopts respectively the microstrip line of 0.7mm to carry out cabling, and its impedance is required is respectively 50 Ω, is protectingCard first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module and four-way are penetratedIn the consistent situation of the each self-corresponding Wiring structure of frequency module and line length, reached first passage radio-frequency module,Second channel radio-frequency module, third channel radio-frequency module and four-way radio-frequency module respective signal separatelyPhase place adjustability.
Wherein, the use of microstrip line can make high-frequency signal effectively transmit, and can with inductanceOr electric capacity formation matching network, high-frequency signal output is mated with inductance or electric capacity. At printed board row platePart, according to down coversion path putting position, closes and carries out winding displacement frequency synthesizer.
Use vector network analyzer to debug printed board, logical to first by vector network analyzerRoad radio-frequency module, second channel radio-frequency module, third channel radio-frequency module and four-way radio-frequency module are eachPhase place from respective signal is tested respectively, has four groups of signals, wherein one of phase value maximum group of workFor benchmark school zero, its excess-three group phase place is respectively negative value, now adopts radio frequency line, electric capacity, inductance etc. rightThree groups of phase places are finely tuned respectively. While adopting radio frequency line to adjust phase place, due to the bad palm of line length of radio frequency lineControl, and after debugging, need a glue to fix, while making radio frequency line occur differently curved angle, all can cause phasePosition changes, and the method is had relatively high expectations to operating personnel, therefore recommendation not, recommendation electric capacity or electricityPhase modulation is carried out in sense, if use electric capacity debugging, electric capacity must be selected high Q value.
Taking electric capacity debugging as example, power splitter or the 3rd power splitter front position be for the second time assembled to earth capacitance,Inductance can be adjusted through the two-way homology local oscillation signal after power splitter or the 3rd power splitter for the second time simultaneouslyPhase place, be assembled to earth capacitance, inductance at power splitter or the 3rd power splitter back-end location for the second time, canAdjust the single channel homology local oscillator in the two-way homology local oscillator letter after power splitter or the 3rd power splitter for the second timeSignal. Wherein, while using electric capacity debugging, need to be the electric capacity of high Q value, in the time adjusting, select and be less than as far as possibleThe electric capacity of 5pF, the excessive ground that signal drawn of capacitance, likely causes path gain to reduce. Therefore adjustingAfter whole end, need again test access gain, ensure that path gain is uninfluenced.
Obviously, those skilled in the art can carry out various changes and modification and de-to the utility modelFrom spirit and scope of the present utility model; Like this, if these amendments of the present utility model and modification belong toWithin the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise thisA little changes and modification are interior.
Claims (9)
1. an optimization device for four-way radio-frequency module, is characterized in that, comprises positive galley and anti-Face galley, described positive galley is divided into four separate spaces, is respectively used to install radio-frequency channel module, complies withInferior first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module, the four-way of obtainingRoad radio-frequency module, described first passage radio-frequency module, second channel radio-frequency module, third channel radio frequency mouldPiece, four-way radio-frequency module are respectively used to amplification, filtering, the gain control of respective channel radiofrequency signalAnd down-converted; Described back face printing version is frequency synthesizer module, and described frequency synthesizer module is usedPenetrate in first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module and four-wayWhen frequency module carries out down-converted, correspondence provides the local oscillation signal of four tunnel homologies.
2. the optimization device of a kind of four-way radio-frequency module as claimed in claim 1, is characterized in that,Described first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module, four-wayIn radio-frequency module, each passage radio-frequency module is by housing unit, the printed board with element, connection cable groupBecome wherein integrated power supply line and high-frequency socket on the panel of housing unit; Described high-frequency socket comprises:Four radio frequency input sockets and four intermediate frequency accessory power outlets.
3. the optimization device of a kind of four-way radio-frequency module as claimed in claim 1 or 2, its feature existsIn, described first passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module or the 4thIn passage radio-frequency module, each passage radio-frequency module also comprise respectively limiter tube, first medium wave filter,Low-noise amplifier, second medium wave filter, radio frequency amplifier, radio frequency automatic gain control unit, soundTable wave filter, frequency mixer, local oscillator, passive filter, intermediate frequency amplifier, intermediate-frequency filter, wave detector,Voltage-controlled attenuator and operational amplifier;
Radio frequency automatic gain control unit comprises the first control input end, the second control input end and controls defeatedGo out end; Wave detector comprises detection input, the first detection output and the second detection output; Frequency mixerComprise first input end, the second input and output; Intermediate frequency amplifier comprise the first medium frequency output end,The second medium frequency output end and input; Operational amplifier comprises the first computing input, the second computing inputEnd and computing output; The input of limiter tube output electrical connection first medium wave filter, first mediumThe output of the output electrical connection low-noise amplifier of wave filter, the input of low-noise amplifier is electrically connectedConnect the input of second medium wave filter, the output electrical connection radio frequency amplifier of second medium wave filterInput, the first control inputs of the output electrical connection radio frequency automatic gain control unit of radio frequency amplifierEnd, the input of the control output end electrical connection SAW filter of radio frequency automatic gain control unit, sound tableThe first input end of the output electrical connection frequency mixer of wave filter, the output electrical connection frequency mixer of local oscillatorThe second input, the input of the output electrical connection passive filter of frequency mixer, passive filter defeatedGo out the input of end electrical connection intermediate frequency amplifier, the first medium frequency output end electrical connection intermediate frequency of intermediate frequency amplifierThe input of wave filter, the detection input of the second medium frequency output end electrical connection wave detector of intermediate frequency amplifier,The first computing input of the first detection output electrical connection operational amplifier of wave detector, the of wave detectorThe input of two detection output electrical connection voltage controlled oscillators, the output electrical connection computing of voltage controlled oscillatorThe second computing input of amplifier, the computing output electrical connection radio frequency automatic gain control of operational amplifierThe second control input end of unit processed;
First radiofrequency signal enters limiter tube, obtains the radiofrequency signal through limiter tube, and limiter tube is for limitThe signal strength signal intensity of radiofrequency signal processed can not burnt channel; First medium wave filter is for reducing process limiter tubeThe decay of radiofrequency signal, obtain the first filtering radiofrequency signal, low-noise amplifier is for reducing the first filterThe channel noise of ripple radiofrequency signal, obtains low noise filtering radiofrequency signal, second medium wave filter for reducingThe decay of low noise filtering radiofrequency signal, obtains the second low noise filtering radiofrequency signal, the second low noise filtering radio frequencySignal carries out radio frequency amplification, avoids through radio frequency automatic gain control unit through radio frequency amplifier successively againNon-linear distortion, and then obtain radio frequency amplifying signal, SAW filter carries out frequency-selecting to radio frequency amplifying signalFiltering, be met set require radiofrequency signal, frequency mixer to meet set require radiofrequency signal andLocal oscillator is carried out Frequency mixing processing, obtains mixed radiofrequency signal, and passive filter is used for improving mixed radiofrequency signalWith the matching degree of intermediate frequency amplifier, then put being sent to intermediate frequency through the mixed radiofrequency signal of passive filterLarge device carries out intermediate frequency amplification, obtains intermediate-freuqncy signal, and intermediate-frequency filter carries out bandwidth, ripple to this intermediate-freuqncy signalMove and Out-of-band rejection, obtain useful intermediate-freuqncy signal, and by this useful intermediate-freuqncy signal output; Wave detector is used forWhether detect the magnitude of voltage of this intermediate-freuqncy signal higher than setting voltage value; When the magnitude of voltage of intermediate-freuqncy signal is higher than establishingWhile determining magnitude of voltage, voltage-controlled attenuator starts intermediate-freuqncy signal to enter according to the operational amplifier feedback voltage of settingRow gain is adjusted, and ensures that intermediate-freuqncy signal is linear, then the intermediate-freuqncy signal being operated in the range of linearity is passed throughOperational amplifier feeds back to radio frequency automatic gain control unit.
4. the optimization device of a kind of four-way radio-frequency module as claimed in claim 3, is characterized in that,Described limiter tube is the limiter tube of SMP1330-007LF.
5. the optimization device of a kind of four-way radio-frequency module as claimed in claim 3, is characterized in that,Described low-noise amplifier is that model is the low-noise amplifier of MGA-635P8.
6. the optimization device of a kind of four-way radio-frequency module as claimed in claim 3, is characterized in that,Described local oscillator comprises the first local oscillator, the second local oscillator, the 3rd local oscillator and the 4th local oscillator, and is corresponding theOne passage radio-frequency module, second channel radio-frequency module, third channel radio-frequency module and four-way radio frequency mouldPiece provides local oscillation signal.
7. the optimization device of a kind of four-way radio-frequency module as claimed in claim 3, is characterized in that,Described wave detector is AD8361 wave detector.
8. the optimization device of a kind of four-way radio-frequency module as claimed in claim 3, is characterized in that,Described voltage-controlled attenuator is RFSA2013 voltage-controlled attenuator.
9. the optimization device of a kind of four-way radio-frequency module as claimed in claim 3, is characterized in that,Described operational amplifier is MAX4452 operational amplifier.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105978639A (en) * | 2016-06-21 | 2016-09-28 | 成都金本华电子有限公司 | Remote telemetric terminal detection device |
| CN107483062A (en) * | 2017-09-19 | 2017-12-15 | 成都嘉泰华力科技有限责任公司 | A kind of multipath reception passage |
| CN109120286A (en) * | 2018-10-12 | 2019-01-01 | 南京屹信航天科技有限公司 | It is a kind of for minimizing the radio circuit of ODU transmission channel |
| CN109490663A (en) * | 2018-10-26 | 2019-03-19 | 北京无线电计量测试研究所 | A kind of crystal resonator test macro and calibration method |
| CN111030716A (en) * | 2019-12-30 | 2020-04-17 | 深圳市大富科技股份有限公司 | 5G mobile communication system and radio frequency coupling circuit thereof |
| CN111049539A (en) * | 2019-12-10 | 2020-04-21 | 上海航天控制技术研究所 | High-linearity multi-antenna-array anti-interference radio frequency front-end system |
| CN111082819A (en) * | 2019-11-19 | 2020-04-28 | 中国电子科技集团公司第四十三研究所 | Device for weakening coupling among radio frequency multiple channels |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105978639A (en) * | 2016-06-21 | 2016-09-28 | 成都金本华电子有限公司 | Remote telemetric terminal detection device |
| CN107483062A (en) * | 2017-09-19 | 2017-12-15 | 成都嘉泰华力科技有限责任公司 | A kind of multipath reception passage |
| CN109120286A (en) * | 2018-10-12 | 2019-01-01 | 南京屹信航天科技有限公司 | It is a kind of for minimizing the radio circuit of ODU transmission channel |
| CN109120286B (en) * | 2018-10-12 | 2024-01-23 | 南京屹信航天科技有限公司 | Radio frequency circuit for miniaturized ODU transmitting channel |
| CN109490663A (en) * | 2018-10-26 | 2019-03-19 | 北京无线电计量测试研究所 | A kind of crystal resonator test macro and calibration method |
| CN111082819A (en) * | 2019-11-19 | 2020-04-28 | 中国电子科技集团公司第四十三研究所 | Device for weakening coupling among radio frequency multiple channels |
| CN111049539A (en) * | 2019-12-10 | 2020-04-21 | 上海航天控制技术研究所 | High-linearity multi-antenna-array anti-interference radio frequency front-end system |
| CN111030716A (en) * | 2019-12-30 | 2020-04-17 | 深圳市大富科技股份有限公司 | 5G mobile communication system and radio frequency coupling circuit thereof |
| CN111030716B (en) * | 2019-12-30 | 2021-09-10 | 深圳市大富科技股份有限公司 | 5G mobile communication system and radio frequency coupling circuit thereof |
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