CN104779918A - X-Ka frequency band up-converter and up-conversion method thereof - Google Patents
X-Ka frequency band up-converter and up-conversion method thereof Download PDFInfo
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Abstract
The invention provides an X-Ka frequency band up-converter and an up-conversion method thereof. The X-Ka frequency band up-converter comprises a first-grade frequency conversion unit, a second-grade frequency conversion unit and a controller, wherein the first-grade frequency conversion unit is used for performing up-conversion on input X frequency band signals, the first-grade frequency conversion unit further comprises a shunt used for performing shunt on the signal after up-conversion, one path of signals shunted by the shunt are input signals of the second-grade frequency conversion unit, and the other path of signals shunted are output directly, the second-grade frequency conversion unit is used for performing up-conversion and outputting the signals after access of the input signals shunted by the shunt, and the controller is used for controlling over the first-grade frequency conversion unit and the second-grade frequency conversion unit. Through the X-Ka frequency band up-converter and the up-conversion method thereof, the signals of the X frequency band can be up-converted to a Ka frequency band, therefore, the Ka double-band output is achieved, and meanwhile the miniaturization design of the up-converter can also be achieved.
Description
Technical field
The present invention relates to satellite data ground receiving system device link technical field, more specifically, relate to a kind of satellite data ground receiving system X-Ka frequency range upconverter and up-conversion method thereof.
Background technology
Along with the progress of earth observation technology, satellite-ground link needs the data volume of transmission increasing, information code check is more and more higher, thus shared bandwidth is also more and more wider, but existing satellite-ground link can not meet the transmission of big data quantity, this just makes the contradiction between remote sensing information and the data transmission capabilities of satellite-ground link day by day highlight.
In the upward signal link of earth observation satellite data ground receiving system, generally the coding of signal, modulation and filtering etc. are carried out at intermediate frequency, then by upconverter by frequency translation to higher frequency range, finally be linked into low noise amplifier after signal amplifies, be fed to transmitting antenna receiving terminal, realize the simulation of downstream signal.Upconverter is as the key equipment of satellite ground data receiving system up link, and the quality of its performance directly has influence on the performance index of up link, also affects the level that channel link detects simultaneously.
Due to current earth observation satellite data generally adopt S/X frequency range under pass, and corresponding ground receiving system is also built based on S/X frequency range.In order to solve the contradiction between remote sensing information and the data transmission capabilities of satellite-ground link, the outer space mission of Current Domestic is also changed to Ka frequency range by present S/X frequency range.But, do not have low rail Ka frequency range remote sensing satellite in-orbit at present, therefore, if Ka frequency range will be adopted to carry out the biography down of satellite data, need to upgrade to the equipment of its corresponding ground receiving system.To build and during upgrading at remote sensing satellite data receiving system, technical requirement that is higher, renewal is proposed to the development of the upconverter of up link.In addition, in receiving system calibration test process, because relating to field test, the portability designing requirement of upconverter is more outstanding.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of X-Ka frequency range upconverter and up-conversion method thereof, with by the signal up-conversion of X frequency range to Ka frequency range, realize Ka two-band and export and the Miniaturization Design of upconverter.
The invention provides X-Ka frequency range upconverter, comprising: one-level converter unit, the signal for the X frequency range by input carries out up-conversion; Wherein, one-level converter unit also comprises splitter, for the signal after up-conversion is carried out shunt; Wherein, the wherein road signal that splitter separates is the input signal of secondary converter unit, and another road signal separated directly exports; Secondary converter unit, carries out up-conversion after the input signal for being separated by splitter accesses and exports; Controller, for controlling one-level converter unit and secondary converter unit.
Wherein, one-level converter unit comprises: the first processing module, for being carried out processing rear output by the signal of the X frequency range of input by filter, attenuator and amplifier; First frequency mixer, for carrying out mixing by the signal of the first processing module output and the one-level local oscillator of Ka frequency range; Second processing module, for accessing the signal after the first frequency mixer mixing by the second selected control switch and after filtering process, exporting Ka frequency range 1 signal by the 3rd selected control switch; 3rd processing module, is input to splitter after Ka frequency range 1 signal for being exported by the 3rd selected control switch by amplifier, attenuator, filter is processed; Described controller controls the local oscillator point frequency of one-level local oscillator and second and third selected control switch according to network configuration instruction.
Wherein, secondary converter unit comprises: the first selected control switch, for the wherein road signal selected control access separated splitter; 4th processing module, exports after the signal that the first selected control switch accesses being carried out Gain tuning process by amplifier; Second frequency mixer, for carrying out mixing by the signal of the 4th processing module output and the secondary local oscillator of Ka frequency range; 5th processing module, the signal for being exported by the second frequency mixer by filter, amplifier, attenuator carries out processing rear output Ka frequency range 2 signal; Controller controls the local oscillator point frequency of secondary local oscillator and the first selected control switch according to network configuration instruction.
On the other hand, the invention provides a kind of up-conversion method of X-Ka frequency range upconverter, wherein, upconverter is above-mentioned upconverter; The up-conversion method of this upconverter comprises:
By controller, one-level converter unit and secondary converter unit are controlled; In one-level converter unit, by the signal of the X frequency range of input by after one-level converter unit up-conversion, carry out shunt by the splitter in one-level converter unit; Wherein, the wherein road signal that splitter separates is linked into secondary converter unit by the first selected control switch, and another road signal separated directly exports; In secondary converter unit, secondary converter unit carries out up-conversion to the signal that the first selected control switch accesses and exports Ka frequency range 2 signal.
Utilize above-mentioned according to X-Ka frequency range upconverter of the present invention and up-conversion method thereof, by the signal up-conversion of X frequency range to Ka frequency range, thus the output of Ka two-band can be realized, the Miniaturization Design of upconverter can also be realized simultaneously.
In order to realize above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more aspect of the present invention comprises.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.But what these aspects indicated is only some modes that can use in the various modes of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and understand more comprehensively along with to of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is the first logical construction block diagram of the X-Ka frequency range upconverter according to the embodiment of the present invention;
Fig. 2 is the second logical construction block diagram of the X-Ka frequency range upconverter according to the embodiment of the present invention;
Fig. 3 is the electrical block diagram of the X-Ka frequency range upconverter according to the embodiment of the present invention;
Fig. 4 is the one-level local oscillation circuit structural representation according to the embodiment of the present invention;
Fig. 5 is the secondary local oscillation circuit structural representation according to the embodiment of the present invention.
Label identical in all of the figs indicates similar or corresponding feature or function.
Embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
There is the problems such as equipment scale is large, performance is low in the upconverter for the satellite data ground receiving system of aforementioned existing Ka frequency range.The present invention can realize the up-conversion of X-Ka frequency band signals by two-stage frequency conversion module, can also realize the Miniaturization Design of the output of Ka two-band and upconverter simultaneously.
Below in conjunction with Fig. 1, Fig. 2, X-Ka frequency range upconverter provided by the invention is described.Wherein, Fig. 1 shows the first logical construction of the X-Ka frequency range upconverter according to the embodiment of the present invention; Fig. 2 shows the second logical construction block diagram of the X-Ka frequency range upconverter according to the embodiment of the present invention.
As shown in Figure 1, X-Ka frequency range provided by the invention becomes device 100 to comprise: one-level converter unit 110, secondary converter unit 120 and controller 130.
Wherein, one-level converter unit 110 carries out up-conversion for the signal of the X frequency range by input; Wherein, the signal after up-conversion is carried out shunt by the splitter in one-level converter unit 110; Wherein, the wherein road signal that splitter separates is the input signal of secondary converter unit 120, and another road signal separated directly exports as Ka frequency range 1 signal; The wherein road signal access secondary converter unit 120 that splitter separates also exports Ka frequency range 2 signal after carrying out up-conversion; Controller 130 pairs of one-level converter units 110 and secondary converter unit 120 control.
Particularly, as shown in Figure 2, one-level converter unit 110 comprises: the first processing module 111, first frequency mixer 112, second selected control switch, the 3rd selected control switch, the 3rd processing module 113 and splitter.Wherein, the signal of the X frequency range of input is undertaken processing rear output by filter, attenuator and amplifier by the first processing module 111; The one-level local oscillator that first frequency mixer is used for signal and the Ka frequency range the first processing module 111 exported carries out mixing; By the signal after the first frequency mixer 112 mixing by the second selected control switch access, then by after filter filtering process, export Ka frequency range 1 signal by the 3rd selected control switch; That is, by the second processing module, the signal that the second selected control switch accesses is carried out filtering process, then by Ka frequency range 1 signal after the 3rd selected control switch output filtering process; 3rd processing module 113 is input to splitter after being processed by Ka frequency range 1 signal that the 3rd selected control switch exports by amplifier, attenuator, filter; Controller can control the local oscillator point frequency of one-level local oscillator and second and third selected control switch according to network configuration instruction.
Secondary converter unit 120 comprises the first selected control switch, the 4th processing module 121, second frequency mixer 122 and the 5th processing module 123.Wherein, the first selected control switch is used for the wherein road signal that separates of selected control access splitter in secondary converter unit 120, and the wherein road signal that namely splitter separates is linked in secondary converter unit 120 by the first selected control switch; 4th processing module 121 exports after the signal that the first selected control switch selected control accesses being carried out Gain tuning process by amplifier; The secondary local oscillator of the signal that the 4th processing module exports by the second frequency mixer 122 and Ka frequency range carries out mixing; 5th processing module 123 is undertaken processing rear output Ka frequency range 2 signal by the signal that the second frequency mixer exports by filter, amplifier, attenuator; Controller can control the local oscillator point frequency of secondary local oscillator and the first selected control switch according to network configuration instruction.
As an example of the present invention, the input signal of X frequency range is 8.45GHz ± 500MHz, one-level local oscillator has three local oscillator points frequently, be respectively 10.05GHz, 10.55GHz, 11.05GHz, after the first frequency mixer 112 mixing, 8.45GHz ± 500MHz can be moved 18GHz ~ 19GHz, 18.5GHz ~ 19.5GHz, 19GHz ~ 20GHz, realize one-level Ka frequency band signals and export.
Particularly, X frequency range input signal is after filter, attenuator and amplifier process, in three somes mixing frequently of the first frequency mixer and one-level local oscillator, controller controls according to the local oscillator point frequency configured one-level local oscillator, the second selected control switch and the 3rd selected control switch, realizes mixing and the filter function of one-level converter unit.Signal after mixing enters splitter again after amplification, filtering, adjustable damping.The road that splitter realizes exports the Ka frequency range radiofrequency signal (i.e. Ka frequency range 1 signal) of 18GHz ~ 20GHz, and the first selected control switch of separately leading up to is linked in secondary converter unit 120.
4th processing module 121 carries out mixing with the secondary local oscillator with 7GHz and 7.5GHz after carrying out amplifying process to the signal that the first selected control switch accesses, then by the signal after mixing after filtering, amplify, export after decay Ka frequency range 2 signal of 25GHz ~ 27.5GHz.
In addition, the present invention is respectively arranged with isolator in the front end (i.e. the input of each module) of the first processing module, the first frequency mixer, the second processing module, the first selected control switch.
In order to further illustrate X-Ka frequency range upconverter provided by the invention, in an illustrative manner X-Ka frequency range upconverter is described in more detail below in conjunction with Fig. 3 and Fig. 4.
Wherein, the key technical indexes such as mirror image suppression, Out-of-band rejection, noise factor, I/O standing-wave ratio, 1db compression point, group delay, amplitude flatness, local oscillator noise and reliability are the invention enables to meet the designing requirement of earth observation satellite data ground receiving system up link.
Main technical indicator of the present invention is as follows: incoming frequency: 7.95GHz ~ 8.95GHz; Output frequency: 18GHz ~ 20GHz, 25GHz ~ 27.5GHz; Gain controllable scope: 0 ~ 20dB, 1dB stepping; Mirror image suppression >=60dBc; Out-of-band rejection >=50dBc; Noise factor≤16dB; I/O standing-wave ratio: 1.5:1; 1dB compression point >=+5dBm; Group delay: 2ns (peak-to-peak value); Amplitude flatness≤2dB (exporting in frequency range); Local vibration source phase noise≤-70dBc/Hz@100Hz or≤-85dBc/Hz@1KHz or≤-95dBc/Hz@10KHz or≤-105dBc/Hz@100KHz or≤-115dBc/Hz@1MHz.
Distribute according to the analysis of above-mentioned technical indicator and function, the Ka signal possessing multiple frequency range due to X-Ka frequency range upconverter provided by the invention exports, therefore, power consumption and the actual demand used is considered when architecture design, the Ka link of high band can realize the On/Off of device power supply (DPS) by controller Long-distance Control, and signal output adopts switch to control.Particularly, Fig. 3 shows the circuit structure of the X-Ka frequency range upconverter according to the embodiment of the present invention.
As shown in Figure 3, X-Ka frequency range upconverter provided by the invention, can realize Ka two-band by X frequency band signals by two-stage frequency conversion structure and export.Wherein, one-level conversion architecture (i.e. above-mentioned one-level converter unit 110) exports the Ka frequency range radiofrequency signal of 18GHz ~ 20GHz, and secondary conversion architecture (i.e. above-mentioned secondary converter unit 120) exports the Ka frequency range radiofrequency signal of 25GHz ~ 27.5GHz.
Particularly, the signal of the X frequency range of input is carried out mixing with the local oscillation signal of Ka frequency range through the filtering of isolator Isolation device, attenuator attenuates, amplifier after amplifying by one-level conversion architecture, and then is exported after amplification, decay, filtering by the signal after mixing.
Wherein, in one-level conversion architecture, the signal frequency of the X frequency range of input is 8.45GHz ± 500MHz, the signal of 8.45GHz ± 500MHz is applied 12.3V voltage, after isolator, filter, attenuator, amplifier process, carries out mixing with the one-level local oscillator of Ka frequency range.Wherein, one-level local oscillator is 10.05GHz, 10.55GHz, 11.05GHz tri-local oscillator points frequencies.8.45GHz ± 500MHz can be moved 18GHz ~ 19GHz, 18.5GHz ~ 19.5GHz, 19GHz ~ 20GHz by mixing, and then by controller by selecting the signal of control to the 18GHz ~ 19GHz after mixing, 18.5GHz ~ 19.5GHz, 19GHz ~ 20GHz tri-frequency ranges of selected control switch, after amplification, adjustable damping, filtering, enter splitter again, thus the Ka frequency range radiofrequency signal realizing 18GHz ~ 20GHz exports.Wherein, the Ka frequency range radiofrequency signal of a road 18GHz ~ 20GHz of splitter will directly export, and the Ka frequency range radiofrequency signal of another road 18GHz ~ 20GHz that splitter separates is using the input as secondary converter unit.
Particularly, Ka frequency range radiofrequency signal through another road 18GHz ~ 20GHz that splitter separates accesses through selected control switch row relax of going forward side by side, the secondary local oscillator (secondary local oscillator frequency is 7GHz and 7.5GHz) of the signal after process and Ka frequency range carries out mixing, and the signal after mixing exports the Ka frequency range radiofrequency signal of 25GHz ~ 27.5GHz again after filtering, amplification, decay.
As shown in Figure 3, input isolator can guarantee good input standing wave, and output standing wave is by the matched well between circuit and meticulously debug guarantee.The outer unrelated interruptions of preliminary election band pass filter filter out-band, and guarantee that image frequency suppresses index, the back of the local oscillator of filtering is simultaneously revealed.This filter has the suppression of more than 75dBc to local frequency, and the 35dBc adding frequency mixer itself suppresses, and the back isolation of the common 50dBc of 2 grades of isolators, the local oscillator leakage of input port can ensure below-80dBm.Input front end puts a numerical-control attenuator, when large-signal inputs, attenuator is placed in attenuation state, avoid amplifier and frequency mixer saturated, guarantee complete machine input dynamic range.The amplifier of high-gain, Gao Sanjie, low-noise factor selected by amplifier, and has good flatness index at application band.
Isolator is put in frequency mixer front end, does certain improvement, matching effect to the standing wave of frequency mixer, ensures the indexs such as inband flatness.Double balanced mixer selected by frequency mixer, has good suppression to even combination frequency, and can have good characteristic in application frequency band range.Other device simultaneously selected by link has good flatness index in corresponding band, and additionally by meticulous debugging, the index of inband flatness can be guaranteed.8.45GHz ± 500MHz is moved in 18GHz ~ 19GHz, 18.5GHz ~ 19.5GHz and 19GHz ~ 20GHz frequency band range by 3 spot-frequency local oscillations by mixing.As calculated, combine spuious nothing within 7 rank to drop in band.Spurious reduction can ensure at more than 60dBc.
When 25GHz ~ 27.5GHz frequency conversion is enabled, it first starts its general supply by control far away, then by the switch opens of rf inputs, local oscillator starts.This frequency conversion adopts low local oscillator 7GHz or 7.5GHz, and user can need to arrange voluntarily according to use.
Because frequency conversion channel is primarily of compositions such as amplifier, frequency mixer and filters.Amplifier and frequency mixer affect less on the group delay of frequency conversion channel, are generally tens ps (Picosecond, a picosecond) magnitude.The group delay characteristic of frequency conversion channel determines primarily of the filter in channel.The attenuation change at main and its exponent number of the group delay characteristic of filter, passband and stop-band transition place has much relations.The bandwidth of usual filter is larger, and group delay characteristic is better, and considers the requirement of Out-of-band rejection, and bandwidth again can not be too wide, therefore according to the delay character appropriate design of ensemble, need not repeat them here when the design of filter.
Due to Group Delay Ripple≤0.5ns in radio-frequency filter designing requirement band, 24 hours absolute Delay Variation≤1ns, from simulation result, in this filter band, Group Delay Ripple is 1ns-0.7ns=0.3ns, thus meets designing requirement.
Intermediate-frequency filter requires Group Delay Ripple≤0.8ns, 24 hours absolute Delay Variation≤1ns in 1000MHz band.Through emulation, in this intermediate-frequency filter band, Group Delay Ripple is 3.1ns-2.8ns=0.3ns.Have 1 grade of radio-frequency filter and 2 grades of intermediate-frequency filters in this frequency conversion channel, the Group Delay Ripple of so whole channel is better than 0.3ns+0.33ns × 2=0.9ns.
Known by the analysis of the simulation result to the circuit structure shown in Fig. 3, gain, technical indicator such as output P-1dB, noise factor etc. all meet the designing requirement of earth observation satellite data ground receiving system up link.
Because X-Ka upconverter of the present invention provides two-stage local oscillation signal.Wherein, one-level local oscillator is 10.05GHz, 10.55GHz, 11.05GHz tri-local oscillator points frequencies, and secondary local oscillator is 7GHz, 7.5GHz, and it all adopts phase-locked loop manner to realize.In order to the two-stage local oscillation signal of X-Ka upconverter of the present invention is described, Fig. 4 and Fig. 5 respectively illustrates the local oscillation circuit structure according to the embodiment of the present invention.Wherein, Fig. 4 shows the one-level local oscillation circuit structure according to the embodiment of the present invention.
As Fig. 4 adopts 100MHz constant-temperature crystal oscillator to be that phase-locked loop makes reference clock, take 50MHz as phase demodulation frequency, the phase-locked output local frequency of Integer N frequency division.Phase-locked chip adopts the HMC704 of HITTITE, and its normalization makes an uproar the end for-230dBc/Hz.VCO (Voltage Controlled Oscillator, voltage control oscillator) selects HMC513, and it has the feature of broadband, low phase noise, and frequency can cover 10000 ~ 11500MHz.Loop filter adopts low noise operational amplifier AD797 to form active loop filter, can well reduce the deterioration of amplifier to phase noise.According to theory of PLL, the selection of optimal loop bandwidth determines according to the phase noise specifications with reference to crystal oscillator and VCO.This project optimal loop bandwidth selection is 500kHz.
In-band phase noise can be estimated by formula PN=PNtot+10logFpfd+20logN, and in practical application, 5dB consideration is pressed in the deterioration of circuit to phase noise, and 1MHz is in outside loop bandwidth, gets making an uproar mutually of VCO and deducts penalty value.Through calculating, phase noise theoretical value can reach :-86dBc/Hz@100Hz ,-102dBc/Hz@1kHz ,-111dBc/Hz@10kHz ,-113dBc/Hz@100kHz ,-118dBc/Hz@1MHz.
Fig. 5 shows the secondary local oscillation circuit structure according to the embodiment of the present invention, and wherein, the analysis and calculation method of the analysis and calculation method of the secondary local oscillator principle shown in Fig. 5 and the one-level local oscillator principle shown in above-mentioned Fig. 4 is similar, does not repeat them here.By the calculating to the secondary local oscillation circuit structure shown in Fig. 5, draw phase noise theoretical value :-90dBc/Hz@100Hz ,-105dBc/Hz@1kHz ,-115dBc/Hz@10kHz ,-117dBc/Hz@100kHz ,-120dBc/Hz@1MHz.
Can be learnt by the calculating of the above-mentioned phase noise to one-level local oscillator and secondary local oscillator, the local oscillator noise index of X-Ka upconverter provided by the invention also meets the designing requirement of earth observation satellite data ground receiving system up link.
It should be noted that in addition, the power interface of X-Ka upconverter provided by the invention has to be prevented connecing circnit NOT and over-voltage over-current protection circuit, can be good at preventing surge and electrostatic, thus reliability, the stability of effective guarantee system.Externally fed voltage is: feed+15V/2A directly powers; Internal electric source :+12.3V/2A ,+5.3V/2A.
It should be noted that, X-Ka frequency range upconverter provided by the invention can not only realize the Ka frequency range radiofrequency signal of 18GHz ~ 20GHz and 25GHz ~ 27.5GHz, it is by carrying out mixing by the input signal of different X frequency ranges from different local oscillation signals, thus by the signal up-conversion of X frequency range to Ka frequency range, and then realize other radiofrequency signals output in Ka frequency range, do not repeat them here.
On the other hand, the present invention also provides a kind of up-conversion method of X-Ka frequency range upconverter.Wherein, upconverter is the upconverter shown in above-mentioned Fig. 1 to Fig. 5, and up-conversion method comprises:
By controller, one-level converter unit and secondary converter unit are controlled; In one-level converter unit, by the signal of the X frequency range of input by after one-level converter unit up-conversion, carry out shunt by the splitter in one-level converter unit; Wherein, the wherein road signal that splitter separates is linked into secondary converter unit by the first selected control switch, and another road signal separated directly exports; In secondary converter unit, secondary converter unit carries out up-conversion to the signal that the first selected control switch accesses and exports.
Particularly, the up-conversion method of one-level converter unit comprises: export after the signal of the X frequency range of input being carried out filtering, decay and amplification by the first processing module; The signal first processing module exported by the first frequency mixer and the one-level local oscillator of Ka frequency range carry out mixing; Wherein, controller controls the local oscillator point of one-level local oscillator frequently according to configuration; After the signal after the first frequency mixer mixing being accessed also filtering process by the second selected control switch by the second processing module, export Ka frequency range 1 signal by the 3rd selected control switch; Ka frequency range 1 signal exported by 3rd selected control switch by the 3rd processing module carries out amplifying, decay, be input to splitter after filtering; Controller can control the local oscillator point frequency of one-level local oscillator and second and third selected control switch according to network configuration instruction.
The up-conversion method of secondary converter unit comprises: the wherein road signal separated by splitter by the first selected control switch is accessed; By the 4th processing module, the signal that the first selected control switch accesses is carried out amplifying rear output; The signal 4th processing module exported by the second frequency mixer and the secondary local oscillator of Ka frequency range carry out mixing; Wherein, controller controls the local oscillator point of secondary local oscillator frequently according to configuration; Ka frequency range 2 signal is exported after the signal exported by second frequency mixer by the 5th processing module carries out filtering, amplification, decay; Controller can control the local oscillator point frequency of secondary local oscillator and the first selected control switch according to network configuration instruction.
Describe in an illustrative manner according to X-Ka frequency range upconverter of the present invention and up-conversion method thereof above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that X-Ka frequency range upconverter and up-conversion method thereof that the invention described above is proposed, various improvement can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (8)
1. an X-Ka frequency range upconverter, comprising:
One-level converter unit, the signal for the X frequency range by input carries out up-conversion; Wherein, described one-level converter unit also comprises splitter, for the signal after up-conversion is carried out shunt; Wherein, the wherein road signal that described splitter separates is the input signal of secondary converter unit, and another road signal separated directly exports;
Secondary converter unit, carries out up-conversion after the input signal for being separated by described splitter accesses and exports;
Controller, for controlling described one-level converter unit and described secondary converter unit.
2. X-Ka frequency range upconverter as claimed in claim 1, wherein, described one-level converter unit comprises:
First processing module, for being undertaken processing rear output by the signal of the X frequency range of input by filter, attenuator and amplifier;
First frequency mixer, for carrying out mixing by the described signal of the first processing module output and the one-level local oscillator of Ka frequency range;
Second processing module, for accessing the signal after described first frequency mixer mixing by the second selected control switch and after filtering process, exporting Ka frequency range 1 signal by the 3rd selected control switch;
3rd processing module, for being input to described splitter by amplifier, attenuator, filter after being processed by Ka frequency range 1 signal that described 3rd selected control switch exports;
Described controller controls the local oscillator point frequency of described one-level local oscillator and second and third selected control switch according to network configuration instruction.
3. X-Ka frequency range upconverter as claimed in claim 2, wherein, described secondary converter unit comprises:
First selected control switch, accesses for selected control the wherein road signal that described splitter separates;
4th processing module, exports after the signal of described first selected control switch selected control access being carried out Gain tuning process by amplifier;
Second frequency mixer, for carrying out mixing by the described signal of the 4th processing module output and the secondary local oscillator of Ka frequency range;
5th processing module, for being undertaken processing rear output Ka frequency range 2 signal by the signal that described second frequency mixer exports by filter, amplifier, attenuator;
Described controller controls the local oscillator point frequency of described secondary local oscillator and the first selected control switch according to network configuration instruction.
4. X-Ka frequency range upconverter as claimed in claim 3, wherein, is respectively arranged with isolator in the front end of described first processing module, described first frequency mixer, described second processing module, described first selected control switch.
5. X-Ka frequency range upconverter as claimed in claim 2, wherein, described one-level local oscillator comprises three local oscillator points frequently; Described secondary local oscillator comprises two local oscillator points frequently.
6. a up-conversion method for X-Ka frequency range upconverter, wherein, described upconverter is upconverter as claimed in any one of claims 1 to 5, wherein; Described up-conversion method comprises:
By controller, one-level converter unit and secondary converter unit are controlled;
In described one-level converter unit, by the signal of the X frequency range of input by after described one-level converter unit up-conversion, carry out shunt by the splitter in described one-level converter unit; Wherein, the wherein road signal that described splitter separates is linked into described secondary converter unit by the first selected control switch, and another road signal separated directly exports;
In described secondary converter unit, the signal of described secondary converter unit to described first selected control switch access carries out up-conversion and exports.
7. the up-conversion method of X-Ka frequency range upconverter as claimed in claim 6, wherein,
The up-conversion method of described one-level converter unit comprises:
Export after the signal of the X frequency range of input being carried out filtering, decay and amplification by the first processing module;
The signal described first processing module exported by the first frequency mixer and the one-level local oscillator of Ka frequency range carry out mixing; Wherein, described controller controls the local oscillator point of described one-level local oscillator frequently according to configuration;
After the signal after described first frequency mixer mixing being accessed also filtering process by the second selected control switch by the second processing module, export Ka frequency range 1 signal by the 3rd selected control switch;
Described controller controls the local oscillator point frequency of described one-level local oscillator and second and third selected control switch according to network configuration instruction;
By the 3rd processing module, Ka frequency range 1 signal that described 3rd selected control switch exports carried out amplifying, decay, be input to described splitter after filtering.
8. the up-conversion method of X-Ka frequency range upconverter as claimed in claim 7, wherein,
The up-conversion method of described secondary converter unit comprises:
The wherein road signal separated by described splitter by described first selected control switch is accessed;
Undertaken amplifying rear output by the signal of described 4th processing module by described first selected control switch access;
The signal described 4th processing module exported by the second frequency mixer and the secondary local oscillator of Ka frequency range carry out mixing; Wherein, described controller controls the local oscillator point of described secondary local oscillator frequently according to configuration;
Ka frequency range 2 signal is exported after the signal that described second frequency mixer exports being carried out filtering, amplification, decay by the 5th processing module;
Described controller controls the local oscillator point frequency of described secondary local oscillator and the first selected control switch according to network configuration instruction.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107979343A (en) * | 2017-11-22 | 2018-05-01 | 北京无线电测量研究所 | One kind minimizes secondary up-converter module |
| CN109905089A (en) * | 2019-01-25 | 2019-06-18 | 北京大学 | A kind of high speed compound loop control unit and its control method |
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| CN101242158A (en) * | 2008-03-07 | 2008-08-13 | 华中科技大学 | A configurable and reconstructable dynamic frequency mixer |
| CN103957047A (en) * | 2014-05-12 | 2014-07-30 | 北京遥测技术研究所 | Miniaturized channel with low power consumption at Ka frequency band |
| CN204498071U (en) * | 2015-05-06 | 2015-07-22 | 中国科学院遥感与数字地球研究所 | X-Ka frequency range upconverter |
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| CN101242158A (en) * | 2008-03-07 | 2008-08-13 | 华中科技大学 | A configurable and reconstructable dynamic frequency mixer |
| CN103957047A (en) * | 2014-05-12 | 2014-07-30 | 北京遥测技术研究所 | Miniaturized channel with low power consumption at Ka frequency band |
| CN204498071U (en) * | 2015-05-06 | 2015-07-22 | 中国科学院遥感与数字地球研究所 | X-Ka frequency range upconverter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979343A (en) * | 2017-11-22 | 2018-05-01 | 北京无线电测量研究所 | One kind minimizes secondary up-converter module |
| CN109905089A (en) * | 2019-01-25 | 2019-06-18 | 北京大学 | A kind of high speed compound loop control unit and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104779918B (en) | 2018-01-12 |
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