CN105067894A - Method and system of testing frequency conversion loss of mixer - Google Patents
Method and system of testing frequency conversion loss of mixer Download PDFInfo
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- CN105067894A CN105067894A CN201510393775.4A CN201510393775A CN105067894A CN 105067894 A CN105067894 A CN 105067894A CN 201510393775 A CN201510393775 A CN 201510393775A CN 105067894 A CN105067894 A CN 105067894A
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Abstract
The invention relates to a method and system of testing the frequency conversion loss of a mixer. The method includes the steps: setting a corresponding application parameter of a local oscillator frequency signal and a radio frequency signal of a mixer; carrying out communication with a test apparatus, and the test apparatus inputting the corresponding oscillator frequency signal and the radio frequency signal to the mixer on the basis of the application parameter; obtaining test data returned by the test apparatus, wherein the test data is the intermediate frequency signal power output by the mixer after frequency mixing processing on the basis of the local oscillator frequency signal and the radio frequency signal; and calculating a ratio, between the radio frequency signal power and the test data, corresponding to the application parameter, and obtaining a frequency conversion loss value. Therefore, the frequency conversion loss of the mixer can be tested automatically, the labor intensity of workers is reduced, and the efficiency is improved.
Description
Technical field
The present invention relates to instrument performance technical field of measurement and test, particularly relate to a kind of method of testing and system of mixer conversion loss.
Background technology
The input signal of twice different frequency is mixed into the output signal of one characteristic frequency by frequency mixer, realizes frequency translation function.Frequency mixer is as the important component part of receiver or other equipment, and the quality of its performance directly affects the parameter index of equipment and instrument, especially the conversion loss of frequency mixer, has very important impact to the duty of whole equipment.Conversion loss is defined as the ratio of the power of incoming frequency and the power of output frequency under given LO (LocalOscillator local frequency), how incoming frequency energy conversion is become estimating of output frequency energy by frequency mixer effectively, wherein incoming frequency is RF (RadioFrequency radio frequency), and output frequency is IF (IntermediateFrequency intermediate frequency).
The test of the conversion loss of frequency mixer is subject to the coupling impact between LO, RF and port, and difficulty of test is larger.The method of testing of traditional conversion loss comprises: use the testing tools such as power meter, frequency spectrograph or vector network analyzer.Power meter and frequency spectrograph test conversion loss is adopted to need use two signal sources, power meter or spectrum analyzers and function signal generator, vector network analyzer test conversion loss is adopted to need use two-port vector network analyzer and a signal source or include four port vector network analyzers of two driving sources, these two kinds of method of testings all need switching various instrument and arranging manually, test value also needs to carry out follow-up artificial treatment, wastes time and energy.Therefore, the method for testing efficiency of traditional conversion loss is not high.
Summary of the invention
Based on this, be necessary for the problems referred to above, method of testing and the system of the mixer conversion loss that a kind of efficiency is high are provided.
A method of testing for mixer conversion loss, comprises the steps:
The local oscillation frequency signal of frequency mixer and application parameter corresponding to radiofrequency signal are set;
Carry out communication with testing tool, drive described testing tool to input corresponding local oscillation frequency signal and radiofrequency signal according to described application parameter to described frequency mixer;
Obtain the test data that described testing tool returns, wherein, described test data is that described frequency mixer is according to the intermediate-freuqncy signal power exported after described local oscillation frequency signal and radiofrequency signal Frequency mixing processing;
Calculate the ratio of RF signal power corresponding to described application parameter and test data, obtain conversion loss value.
A test macro for mixer conversion loss, comprising:
Parameter setting module, the application parameter that local oscillation frequency signal and radiofrequency signal for arranging frequency mixer are corresponding;
Driving test module, for carrying out communication with testing tool, driving described testing tool to input corresponding local oscillation frequency signal and radiofrequency signal according to described application parameter to described frequency mixer;
Data acquisition module, for obtaining the test data that described testing tool returns, wherein, described test data is that described frequency mixer is according to the intermediate-freuqncy signal power exported after described local oscillation frequency signal and radiofrequency signal Frequency mixing processing;
Data processing module, for calculating the ratio of RF signal power corresponding to described application parameter and test data, obtains conversion loss value.
The method of testing of above-mentioned a kind of mixer conversion loss and system, corresponding radiofrequency signal and local oscillation frequency signal is inputted according to application parameter to frequency mixer by driving testing tool, obtain the test data of the frequency mixer mixing output that testing tool returns, and the ratio of radiofrequency signal corresponding to computing application parameter and test data obtains conversion loss value, achieve the automatic test of mixer conversion loss, reduce hand labor intensity, improve efficiency.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for testing of wherein mixer conversion loss of the present invention in an embodiment;
Fig. 2 is the process flow diagram of the method for testing of mixer conversion loss in another embodiment;
Fig. 3 is the process flow diagram arranging the local oscillation frequency signal of frequency mixer and application parameter corresponding to radiofrequency signal in an embodiment;
Fig. 4 is the module map of the test macro of mixer conversion loss of the present invention;
Fig. 5 is the connection diagram of testing tool and frequency mixer in an embodiment;
Fig. 6 is the module map of the test macro of mixer conversion loss in another embodiment;
Fig. 7 is the concrete unit figure of communication test module in an embodiment;
Fig. 8 is the concrete unit figure of parameter setting module in an embodiment;
Fig. 9 is the proving installation figure of the test macro of application mixer conversion loss;
Figure 10 is the module frame chart of the sub-VI of communication;
Figure 11 is the flow chart of the sub-VI of communication;
Figure 12 is the interface schematic diagram of the sub-VI of instrument driving;
Figure 13 is the log-in interface schematic diagram of operating software on computing machine.
Embodiment
With reference to figure 1, the method for testing of a kind of mixer conversion loss of one embodiment of the invention, comprises step S110 to step S170.
S110: the local oscillation frequency signal of frequency mixer and application parameter corresponding to radiofrequency signal are set.
Such as, staff can manually input needs the frequency of corresponding local oscillation frequency signal and the radiofrequency signal arranged to count, and represents corresponding local oscillation frequency signal and radiofrequency signal.
S130: carry out communication with testing tool, drives testing tool to input corresponding local oscillation frequency signal and radiofrequency signal according to application parameter to frequency mixer.
Testing tool refers to the instrument for testing mixer conversion loss value.Such as, testing tool can comprise vector network analyzer and a signal source of a two-port.In the present embodiment, a port of vector network analyzer connects the radio-frequency (RF) signal input end mouth of frequency mixer, and for providing radiofrequency signal, another port connects the intermediate-freuqncy signal output port of frequency mixer, signal source connects local oscillation frequency signal, for providing local oscillation frequency signal to frequency mixer.Be appreciated that in other examples, testing tool also can be the four port vector network analyzers including two driving sources, and now, vector network analyzer both provided radiofrequency signal, provided local oscillation frequency signal again.
S150: obtain the test data that testing tool returns, wherein, test data is that frequency mixer is according to the intermediate-freuqncy signal power exported after local oscillation frequency signal and radiofrequency signal Frequency mixing processing.
S170: the ratio of the RF signal power that computing application parameter is corresponding and test data, obtains conversion loss value.
Wherein in an embodiment, with reference to figure 2, before step S110, also comprise step S100: detect judgement whether normal with the communication of testing tool, if so, then perform step S110.If not, then can send alerting signal and inform staff's communication failure, to process in time.By detecting in advance, whether communication connects normal, gets rid of the possibility not receiving testing tool return data, raises the efficiency.
Wherein in an embodiment, step S100 comprises step s11 to step s13.
S11: send to testing tool and detect data.Such as, detecting data can be that frequency is counted.
S12: judge whether that receiving testing tool responds the feedback data detecting data and obtain.If so, step s13 is performed.
S13: judge with the communication of testing tool normal.
Wherein in an embodiment, comprise step S111 to step S119 with reference to figure 3, step S110.
S111: the user name and the user password that obtain input.
S113: judge whether the user name storing input.If so, then step S115 is performed.
S115: judge that whether the password that the user password of input is corresponding with the user name of storage is consistent.If so, then perform step S117 or perform step S119.
Store the user name of input, represent that this user allows login system.When the password that the user password inputted is corresponding with the user name of storage is consistent, represent that user is by checking, can use system.Particularly, if when the user password password corresponding with the user name of storage of input is inconsistent, can information be exported, notify that user re-enters user password.
By the checking of user name and user password, a user name and the corresponding file of user password, make, when there being many people to use system, to avoid test to interfere with each other, and avoids dependence test personnel to test and make mistakes and prevent unrelated person use system.
S117: optimum configurations is application parameter by the parameter receiving the respective user name of input.Therefore, after user logs in, application parameter can be reset.
S119: according to user name, obtaining the parameter of the respective user name stored, is application parameter by the optimum configurations up-to-date storage time in the parameter of storage.That is, the optimum configurations that can call respective user name is application parameter, is specially the application parameter of invoke user the last time setting.Therefore, when after user's login system, last test job can be proceeded.
Wherein in an embodiment, in step S130, after carrying out communication with testing tool, drive testing tool according to application parameter to before local oscillation frequency signal corresponding to frequency mixer input and radiofrequency signal, also comprise: send calibration data to testing tool, reception testing tool responds the data that described calibration data returns, judge whether calibration data is less than or equal to preset error value with the error of the data returned, if so, then perform and drive testing tool according to the local oscillation frequency signal of application parameter to frequency mixer input correspondence and the step of radiofrequency signal.If not, continue to send calibration data, until calibration data is less than or equal to preset error value with the error amount of the data returned.By instrument calibration, improve the degree of accuracy of data transmission.
Wherein in an embodiment, continue with reference to figure 2, after step S170, also comprise step S190: process is compared to conversion loss value and pre-set level, obtain the performance analysis report of frequency mixer.
Pre-set level refers to the desirable conversion loss value that the radiofrequency signal of a frequency band is corresponding.Conversion loss value in the conversion loss value recorded and pre-set level is compared, can show that the performance of frequency mixer is good and bad.
Be appreciated that the application parameter arranged in step S110 can have many groups, corresponding, each group application parameter can obtain a conversion loss value in step S170.By the test of multiple conversion loss value, the conversion loss situation in each frequency band can be obtained, thus carry out comprehensive Performance Evaluation.The curve map that in the present embodiment, performance analysis report can be is transverse axis with frequency values, conversion loss value is the longitudinal axis.
Wherein in an embodiment, after step S190, also comprise the step storing conversion loss value and/or performance analysis report.Store testing the data obtained, after convenient, staff checks statistics.
The method of testing of above-mentioned a kind of mixer conversion loss, corresponding radiofrequency signal and local oscillation frequency signal is inputted according to application parameter to frequency mixer by driving testing tool, obtain the test data of the frequency mixer mixing output that testing tool returns, and the ratio of radiofrequency signal corresponding to computing application parameter and test data obtains conversion loss value, achieve the automatic test of mixer conversion loss, reduce hand labor intensity, improve efficiency.
With reference to figure 4, the test macro of the present invention's wherein a kind of mixer conversion loss of an embodiment, comprises parameter setting module 110, drives test module 130, data acquisition module 150 and data processing module 170.
Parameter setting module 110 is for application parameter corresponding to the local oscillation frequency signal and radiofrequency signal that arrange frequency mixer 200 (see Fig. 5).Such as, staff can manually input needs the frequency of corresponding local oscillation frequency signal and the radiofrequency signal arranged to count, and represents corresponding local oscillation frequency signal and radiofrequency signal.
Driving test module 130 for carrying out communication with testing tool 300 (see Fig. 5), driving testing tool 300 to input corresponding local oscillation frequency signal and radiofrequency signal according to application parameter to frequency mixer 200.
Testing tool 300 refers to the instrument for testing frequency mixer 200 conversion loss value.Such as, with reference to figure 5, testing tool 300 can comprise vector network analyzer 301 and a signal source 320 of a two-port.In the present embodiment, a port of vector network analyzer 301 connects the radio-frequency (RF) signal input end mouth of frequency mixer 200, for providing radiofrequency signal, another port connects the intermediate-freuqncy signal output port of frequency mixer 200, signal source 302 connects local oscillation frequency signal, for providing local oscillation frequency signal to frequency mixer 200.Be appreciated that in other examples, testing tool 300 also can be the four port vector network analyzers including two driving sources, and now, four port vector network analyzers both provided radiofrequency signal, provided local oscillation frequency signal again.
The test data that data acquisition module 150 returns for obtaining testing tool 300, wherein, test data is that frequency mixer 200 is according to the intermediate-freuqncy signal power exported after local oscillation frequency signal and radiofrequency signal Frequency mixing processing.
Data processing module 170, for the ratio of RF signal power corresponding to computing application parameter and test data, obtains conversion loss value.
Wherein in an embodiment, with reference to figure 6, the test macro of above-mentioned mixer conversion loss also comprises communication test module 100, judges that whether the communication with testing tool 300 is normal for detecting.If communication is normal, then normally can carry out test operation.If not, then can send alerting signal and inform staff's communication failure, to process in time.By detecting in advance, whether communication connects normal, gets rid of the possibility not receiving testing tool 300 return data, raises the efficiency.
Wherein in an embodiment, with reference to figure 7, communication test module 100 comprises:
Data transmission unit 101, detects data for sending to testing tool 300.Such as, detecting data can be that frequency is counted.
Data receipt unit 103, for judging whether that receiving testing tool 300 responds the feedback data detecting data and obtain.
Result identifying unit 105, during for receiving feedback data, judges with the communication of testing tool 300 normal.
Wherein in an embodiment, with reference to figure 8, parameter setting module 110 comprises user ID collecting unit 111, user ID recognition unit 113 and customer parameter setting unit 115.
User ID collecting unit 111 is for obtaining user name and the user password of input.User name and user password use when being used for login system.
User ID recognition unit 113, for judging whether the user name storing input, if so, judges that whether the password that the user password of input is corresponding with the user name of storage is consistent.Store the user name of input, represent that this user allows login system.When the password that the user password inputted is corresponding with the user name of storage is consistent, represent that user is by checking, can use system.Particularly, if when the user password password corresponding with the user name of storage of input is inconsistent, can information be exported, notify that user re-enters user password.
By the checking of user name and user password, a user name and the corresponding file of user password, make, when there being many people to use system, to avoid test to interfere with each other, and avoids dependence test personnel to test and make mistakes and prevent unrelated person use system.
When customer parameter setting unit 115 is consistent for the password corresponding with the user name of storage at the user password inputted, receiving the parameter of the respective user name of input, is application parameter by optimum configurations.Therefore, after user logs in, application parameter can be reset.Or customer parameter setting unit 115 also may be used for according to user name, obtaining the parameter of the respective user name stored, is application parameter by the optimum configurations up-to-date storage time in the parameter of storage.That is, system can call the optimum configurations of the user name of corresponding stored is application parameter, is specially the application parameter of invoke user the last time setting.Therefore, when after user's login system, last test job can be proceeded.
Wherein in an embodiment, test module 130 is driven to comprise alignment unit (not shown) and test cell (not shown).Alignment unit sends calibration data to testing tool 300 after being used for carrying out communication with testing tool 300, and reception testing tool 300 responds the data that calibration data returns, and judges whether calibration data is less than or equal to preset error value with the error of the data returned.Test cell is used for, when calibration data is less than or equal to preset error value with the error of the data returned, driving testing tool 300 to input local oscillation frequency signal and radiofrequency signal according to application parameter to frequency mixer 200.Particularly, if calibration data is greater than preset error value with the error of the data returned, then continue to send calibration data, until calibration data is less than or equal to preset error value with the error amount of the data returned.By instrument calibration, improve the degree of accuracy of data transmission.
Wherein in an embodiment, continue with reference to figure 6, the test macro of above-mentioned mixer conversion loss also comprises performance evaluation module 180, for comparing process to conversion loss value and pre-set level, obtains the performance analysis report of frequency mixer 200.Pre-set level refers to the desirable conversion loss value that the radiofrequency signal of a frequency band is corresponding.Conversion loss value in the conversion loss value recorded and pre-set level is compared, can show that the performance of frequency mixer 200 is good and bad, thus Performance Evaluation can be carried out to the frequency mixer 200 of this test.
Be appreciated that the application parameter arranged in parameter setting module 110 can have many groups, corresponding, each group application parameter can obtain a conversion loss value.By the test of multiple conversion loss value, the conversion loss situation in each frequency band can be obtained, thus carry out comprehensive Performance Evaluation.The curve map that in the present embodiment, performance analysis report can be is transverse axis with frequency values, conversion loss value is the longitudinal axis.
Wherein in an embodiment, the test macro of above-mentioned mixer conversion loss also comprises output module (not shown), and output module is for exporting the performance analysis report of frequency mixer 200.Store testing the data obtained, after convenient, staff checks statistics.
Wherein in an embodiment, continue with reference to figure 6, the test macro of above-mentioned mixer conversion loss also comprises memory module 190, for storing conversion loss value and/or performance analysis report.
The test macro of above-mentioned a kind of mixer conversion loss, corresponding radiofrequency signal and local oscillation frequency signal is inputted to frequency mixer 200 by the application parameter driving test module 130 to drive testing tool 300 to arrange according to parameter setting module 110, data acquisition module 150 obtains the test data of the frequency mixer 200 mixing output that testing tool 300 returns, the ratio of the radiofrequency signal that data processing module 170 computing application parameter is corresponding and test data obtains conversion loss value, achieve the automatic test of frequency mixer 200 conversion loss, reduce hand labor intensity, improve efficiency.
To apply the test macro of above-mentioned mixer conversion loss, apply the proving installation of the test macro of above-mentioned mixer conversion loss as shown in Figure 9.
The proving installation of mixer conversion loss, based on LabVIEW, mainly contains two large divisions and forms: hardware and software.Hardware components comprises corresponding testing tool, computing machine and data output apparatus.Testing tool mainly contains two parts and forms: there is the vector network analyzer of frequency deviation test module and there is frequency sweep function, arrange that frequency sweep is counted, frequency sweep time and receive the signal source of outer triggering signal function.Computing machine uses the XP system supporting gpib interface driver.Data output apparatus completes data transmission between data output apparatus and computing machine by gpib bus.Particularly, data output apparatus can be printer apparatus.
Testing tool mainly refers to the hardware testing equipment for measuring mixer conversion loss parameter, and the four port vector network analyzers that can have two driving sources by the two-port vector network analyzer with frequency deviation function and the signal source combination or a direct inside with frequency sweep function complete.In this covering device vector network analyzer selected Agilent N5230A series, this serial model No. there is high performance receiver, test dynamic range greatly, measuring accuracy is high, and test speed is fast, multiple channel test function, can flexible configuration test structure, multiple bus test control method.The E8257D series of Agilent that what signal source was selected is, it is fast that this signal source has sweep velocity, and precision is high, can receive outer triggering signal and carry out source driving signal.When testing, the P1 port of vector network analyzer is as the output port of vector network analyzer, for the prevention at radio-frequency port input signal of frequency mixer, P2 port receives the change of the intermediate frequency port display of frequency mixer as the input port of vector network analyzer, and the local oscillator port of frequency mixer is linked into the output port of signal source E8257D.The conversion loss of frequency mixer is measured and must be ensured that two instrument signal are only accurately and reliably with the result of testing under prerequisite frequently, need the input of the external trigger of BNC bundle of lines vector network analyzer and signal source to couple together, the trigger pip being given two instruments operations by outside completes common frequency measurement.
Computing machine is mainly in order to allow the software of design normally run and to control surveying instrument and the collection, storage etc. of data.Allocation of computer require for operating system be XP system and more than, external interface will support gpib bus and LPT port.Computer supported gpib interface is because now general instrument is provided with GPIB mouth, be conducive to expansion and the online testing of carrying out instrument, computer supported gpib interface is also conducive to reducing testing cost, do not need additionally to add other connections, gpib interface bussing technique cost is low, technology is complete, and exploitation is simple, highly versatile.LPT port is that computing machine connects printer apparatus, mainly exports to carry out after test data process and shows, provide the test data carrier of papery version, decrease the workload of the late time data process of tester.
Software section based on the mixer conversion loss proving installation of LabVIEW (LaboratoryVirtualInstrumentationEngineeringWorkbench, laboratory virtual instrument engineering platform) is made up of four parts: with the sub-VI of the communication of GPIB device talk, the sub-VI of instrument driving, the sub-VI of Signal acquiring and processing, process each bed interface and realize the sub-VI of multimedia technology.
With reference to Figure 10, it is the module frame chart of the sub-VI of communication.GPIB programming in LabVIEW platform has two kinds of modes, namely traditional GPIB mode and the VISA mode for plug and play protocol (VXIplug & play).Should VISA mode be adopted to programme in use-case.VISA is the abbreviation of Virture Instrumentation Software Architecture system, and it is single socket library of control VXI, GPIB, RS-232 and other kind of quasi-instrument in LabVIEW platform.Adopt VISA standard can not consider time and instrument I/0 options, driver can compatiblely use.Most of VISA functional module employs VISAsession parameter, and VISAsession is the unique logic identifier of each procedure operation process.It identifies the device name of communication with it and carries out I/0 and operate required configuration information.The sub-VI of communication comprises following several function VISAOpen (opening communication process), VISAWrite (serial data is write designated equipment), VISARead (reading in data from designated equipment), the functional modules such as VISAClose (closing by the communication process of VISAsession designated equipment, free system resources).Each module is made up of corresponding function, directly calls above-mentioned four functions, according to the sequential programming opened, write, read and close in the serial ports option in the instrument I/O assistant in the flow chart of this function in LabVIEW language.With reference to Figure 11, it is the flow chart of the sub-VI of communication.
With reference to Figure 12, it is the interface schematic diagram of the sub-VI of instrument driving.Virtual instrument driver is that process carries out a kind of software of communication control with particular instrument, be user complete to instrument hardware control tie and bridge, instrument driver and gpib interface and use development environment to interknit, provide a kind of senior, abstract instrument map.The core of virtual instrument driver is driver function VI collection (namely forming the subroutine of driver module).Driver generally divides two-layer: bottom is the basic operation of instrument, as initialization instrument, configure instrument input parameter, transceiving data, checks instrument state; High level is utility function/VI layer, and it measures according to concrete the function VI requiring to call bottom, and corresponding function is selected in flow chart programming, the functions such as numerical value input, initialization instrument.Use the process of computer control instrument device, being in fact exactly computing machine and instrument information exchanging process in communication process, is the order of control instrument and the feedback data of instrument.Every platform instrument has its specifically order and transmission command format, needs to illustrate according to corresponding instrumentation and writes.Instrument between every platform difference can drive by downloading corresponding driver.
The command format that the sub-VI of Signal acquiring and processing is mainly relevant with instrument data collection according to the test request of user, carrys out required data reading.The data acquisition had by LabVIEW, the function converting raw data to excel document by certain function VI, directly eliminated the time of data processing, effectively alleviate tester's workload.Such as when gathering the data of conversion loss measuring process, first arranging the data item needing to gather, secondly sending read data order and carrying out data acquisition, last sense data is also transferred to computing machine by GPIB and carries out subsequent treatment.
In virtual instrument software exploitation, general employing modeled programming method.The starting point of modeled programming is that a complicated system software is decomposed into several functional modules, and each module performs single function.In the Programming of native system, process each bed interface and realize the sub-VI of multimedia technology first according to the subroutine VI of the various bottom of function weaving, comprise instrument initialization, function selection, data acquisition and process, malformed queries etc., the high straton VI of these functional modules is called in establishment again, completes complicated data acquisition and processing (DAP) task.
With reference to Figure 13, it is the log-in interface of operating software on computing machine.After user logs in and enters, and testing tool can be driven to test by the communication of software simulating and testing tool.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a method of testing for mixer conversion loss, is characterized in that, comprises the steps:
The local oscillation frequency signal of frequency mixer and application parameter corresponding to radiofrequency signal are set;
Carry out communication with testing tool, drive described testing tool to input corresponding local oscillation frequency signal and radiofrequency signal according to described application parameter to described frequency mixer;
Obtain the test data that described testing tool returns, wherein, described test data is that described frequency mixer is according to the intermediate-freuqncy signal power exported after described local oscillation frequency signal and radiofrequency signal Frequency mixing processing;
Calculate the ratio of RF signal power corresponding to described application parameter and test data, obtain conversion loss value.
2. the method for testing of mixer conversion loss according to claim 1, is characterized in that, described frequency mixer is set local oscillation frequency signal and application parameter corresponding to radiofrequency signal before, also comprise:
Detect and judge that whether the communication with described testing tool is normal;
If so, then perform described frequency mixer is set local oscillation frequency signal and the step of application parameter corresponding to radiofrequency signal.
3. the method for testing of mixer conversion loss according to claim 2, is characterized in that, whether described detection judges with the communication of described testing tool normal, comprising:
Send to described testing tool and detect data;
Judge whether to receive described testing tool and respond the feedback data that described detection data obtain;
If so, judge with the communication of described testing tool normal.
4. the method for testing of mixer conversion loss according to claim 1, is characterized in that, described frequency mixer is set local oscillation frequency signal and application parameter corresponding to radiofrequency signal comprise:
Obtain user name and the user password of input;
Judge whether the user name storing input;
If so, judge that whether the password that the user password of input is corresponding with the user name of storage is consistent;
If consistent, receiving the parameter of the described user name of correspondence of input, is described application parameter by described optimum configurations; Or
According to described user name, obtaining the parameter of the described user name of correspondence stored, is described application parameter by the optimum configurations up-to-date storage time in the parameter of storage.
5. the method for testing of mixer conversion loss according to claim 1, is characterized in that, the ratio of the RF signal power that the described application parameter of described calculating is corresponding and test data, after obtaining conversion loss value, also comprises:
Process is compared to described conversion loss value and pre-set level, obtains the performance analysis report of described frequency mixer.
6. a test macro for mixer conversion loss, is characterized in that, comprising:
Parameter setting module, the application parameter that local oscillation frequency signal and radiofrequency signal for arranging frequency mixer are corresponding;
Driving test module, for carrying out communication with testing tool, driving described testing tool to input corresponding local oscillation frequency signal and radiofrequency signal according to described application parameter to described frequency mixer;
Data acquisition module, for obtaining the test data that described testing tool returns, wherein, described test data is that described frequency mixer is according to the intermediate-freuqncy signal power exported after described local oscillation frequency signal and radiofrequency signal Frequency mixing processing;
Data processing module, for calculating the ratio of RF signal power corresponding to described application parameter and test data, obtains conversion loss value.
7. the test macro of mixer conversion loss according to claim 6, is characterized in that, also comprises communication test module, judges that whether the communication with described testing tool is normal for detecting.
8. the test macro of mixer conversion loss according to claim 7, is characterized in that, described communication test module comprises:
Data transmission unit, detects data for sending to described testing tool;
Data receipt unit, responds for judging whether to receive described testing tool the feedback data that described detection data obtain;
Result identifying unit, for when receiving described feedback data, judges with the communication of described testing tool normal.
9. the test macro of mixer conversion loss according to claim 6, is characterized in that, described parameter setting module comprises:
User ID collecting unit, for obtaining user name and the user password of input;
User ID recognition unit, for judging whether the user name storing input, if so, judges that whether the password that the user password of input is corresponding with the user name of storage is consistent;
Customer parameter setting unit, time consistent for the password corresponding with the user name of storage at the user password inputted, receiving the parameter of the described user name of correspondence of input, is described application parameter by described optimum configurations; Or
For according to described user name, obtaining the parameter of the described user name of correspondence stored, is described application parameter by the optimum configurations up-to-date storage time in the parameter of storage.
10. the test macro of mixer conversion loss according to claim 6, is characterized in that, also comprises performance evaluation module, for comparing process to described conversion loss value and pre-set level, obtains the performance analysis report of described frequency mixer.
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| CN105353259A (en) * | 2015-12-09 | 2016-02-24 | 扬州海科电子科技有限公司 | Automatic test system for frequency conversion assembly |
| CN106443548A (en) * | 2016-11-15 | 2017-02-22 | 中国电子科技集团公司第四十研究所 | Calibration method of using electronic calibration piece to measure frequency conversion loss of mixer by vector network analyzer |
| CN108614207A (en) * | 2018-05-23 | 2018-10-02 | 中国电子科技集团公司第四十研究所 | A kind of the signal source switching device and method of vector network analyzer |
| CN109196365A (en) * | 2016-09-01 | 2019-01-11 | 多路径株式会社 | Utilize the conductivity and non-conductor dielectric constant properties change detecting device of the cordless of radiofrequency signal |
| CN111880013A (en) * | 2020-08-18 | 2020-11-03 | 中电科仪器仪表有限公司 | Terahertz mixer frequency conversion loss testing method and system for eliminating radio frequency source influence |
| WO2021169927A1 (en) * | 2020-02-29 | 2021-09-02 | 昆山普尚电子科技有限公司 | Mixer effective supply voltage calculation method |
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| CN109196365A (en) * | 2016-09-01 | 2019-01-11 | 多路径株式会社 | Utilize the conductivity and non-conductor dielectric constant properties change detecting device of the cordless of radiofrequency signal |
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| CN106443548B (en) * | 2016-11-15 | 2019-01-22 | 中国电子科技集团公司第四十一研究所 | A kind of vector network analyzer measures the calibration method of mixer conversion loss using Electronic Calibration part |
| CN108614207A (en) * | 2018-05-23 | 2018-10-02 | 中国电子科技集团公司第四十研究所 | A kind of the signal source switching device and method of vector network analyzer |
| WO2021169927A1 (en) * | 2020-02-29 | 2021-09-02 | 昆山普尚电子科技有限公司 | Mixer effective supply voltage calculation method |
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| CN111880013B (en) * | 2020-08-18 | 2021-10-26 | 中电科思仪科技股份有限公司 | Terahertz mixer frequency conversion loss testing method and system for eliminating radio frequency source influence |
| WO2022036873A1 (en) * | 2020-08-18 | 2022-02-24 | 中电科仪器仪表有限公司 | Terahertz mixer frequency conversion loss test method and system capable of eliminating influence of radio frequency source |
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