CN104849687B - A kind of microwave Calibration Method for ATS based on scattering parameter cascade - Google Patents
A kind of microwave Calibration Method for ATS based on scattering parameter cascade Download PDFInfo
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Abstract
The present invention proposes a kind of microwave Calibration Method for ATS based on scattering parameter cascade, comprises the following steps：According to specifically test application state, it is determined that calibrating and testing the whole TCH test channels included and its each basic component units, and the calibration data configuration of corresponding multidimensional condition mapping scattering parameter is carried out with this；According to specific test application configuration information, control system configures each tester equipment and carries out self calibration；According to specific test application requirement, when calibration data configuration is fully completed, the test application of microwave Auto-Test System is carried out, and error correction is carried out according to calibration data in real time, to obtain the higher test result of test accuracy.It is of the invention effectively solve in automatic testing process due to TCH test channel is complicated and it is unconventional the reason such as require, the problem of test accuracy caused by causing universal tester self-aligning test performance limited declines even test failure.
Description
Technical field
The present invention relates to microwave testing field, more particularly to a kind of microwave Calibration Method for ATS.
Background technology
With the fast development of microwave technology, microelectric technique, information technology, the object to be tested function of itself is promoted more
Add abundant, technology to form and integrated fusion is more complicated and gos deep into, thus updated to measuring technology or Related product proposition, be higher
Technical requirements.
Test content based on traditional separate unit instrument and equipment does not adapt to new survey under many circumstances with pattern framework
Examination demand, to fusion synthesization, informationization, automate in one automatic Synthesis observing and controlling and information exchange Mode change,
Innovation is also required to simultaneously proposes or formed adaptable therewith detection calibration method and technology.
Calibration for microwave Auto-Test System at present is typically using online detection calibration mode in situ, i.e., micro-
Before ripple Auto-Test System is tested, each test end that power meter is respectively connecting to be connected with being tested object,
By cooperateing with calibration test with signal source, each test that microwave Auto-Test System is built automatically in test process
The insertion loss (systematic error) of passage extracts, there is provided follow-up error correction and data processing is tested, to improve test
The degree of accuracy；Or the detection calibration face of vector network analyzer is connected from instrument selftest ports-Extending to tested object
Each test end, by the systematic error of microwave Auto-Test System each TCH test channel constructed in test process
It is modified and handles by the calibration test that vector network analyzer is carried out in detection calibration face, improves test accuracy.
In the prior art using signal source, the side of power meter collaboration calibration correction TCH test channel insertion loss (systematic error)
Formula has a disadvantage that：
(1), in actual test application, often due to the passage of automatic Synthesis test is complicated with unconventional requirement, deposit
The situation for each test end being connected with being tested object is cannot connect in power meter, now which can not be applicable；
(2), the port mismatch of power meter itself can give the amendment of insertion loss (systematic error) to introduce error so as to reduce
The final test degree of accuracy；
(3), power meter needs to be respectively connecting to each test end being connected with tested object, calibration test process
Time-consuming, less efficient；
(4) if, the component units of TCH test channel change, the insertion loss (systematic error) of corresponding TCH test channel needs
Calibration and amendment are re-started, influences the effective utilization of system；
Vector network analyzer is used in the prior art with detection calibration face extended mode calibration correction TCH test channel system
The mode of error has a disadvantage that：
(1), in actual test application, often due to the passage of automatic Synthesis test is complicated with unconventional requirement, arrow
Measure path length (insertion loss is big), the mismatch link between the instrument test port of Network Analyzer and detection calibration face (extension)
It is more, combination of channels state is more, beyond vector network analyzer calibration needed for state of the art claimed range, in detection calibration face
Calibration accuracy is poor to even result in calibration failure, can not meet the requirement of test accuracy；
(2), the calibration test of vector network analyzer needs to carry out in each detection calibration face, and whole test system is more logical
Time-consuming, less efficient for the calibration test process in road detection calibration face；
(3) if, the component units of TCH test channel change, the systematic error of corresponding TCH test channel needs to re-start
Calibration and amendment, influence the effective utilization of system；
(4) in actual test application, can exist toward contact can not use vector network analyzer to TCH test channel system
Error carries out the situation of calibration correction, at this moment can not meet to test application requirement using current calibrating mode.
In the practical application of microwave Auto-Test System, a kind of detection calibration side suitable for Auto-Test System is proposed
Method, effectively solve automatic testing process in due to TCH test channel it is complicated and it is unconventional require etc. reason, cause instrument itself school
Test accuracy caused by quasi- test performance is limited declines or test failure, is current urgent problem to be solved.
The content of the invention
The present invention proposes a kind of microwave Calibration Method for ATS based on scattering parameter cascade, effectively solves automatic
In test process due to TCH test channel is complicated and it is unconventional require etc. reason, cause universal tester self-aligning testability
Test accuracy caused by being limited declines the problem of even test failure.
The technical proposal of the invention is realized in this way：
A kind of microwave Calibration Method for ATS based on scattering parameter cascade, based on visualized graph interface guide
Formula man-machine interaction steer mode, comprises the following steps：
Step (1)：According to the specific test application state of microwave Auto-Test System, it is determined that what calibration and test were included
Whole TCH test channels and its each basic component units, and with this carry out corresponding multidimensional condition and map the calibration data of scattering parameter matching somebody with somebody
Put；
Step (2)：According to the specific test application configuration information of microwave Auto-Test System, control system configures each test
Instrument and equipment carries out self calibration；
Step (3)：According to the specific test application configuration information of microwave Auto-Test System, reflected for existing multidimensional condition
Each basic component units for penetrating scattering parameter calibration data carry out calling and the configuration of calibration data；
Step (4)：According to the specific test application configuration information of microwave Auto-Test System, no multidimensional condition is mapped
The basic component units of each TCH test channel of system of the calibration data of scattering parameter, prompt to perform the scattering parameter of multidimensional condition mapping
The extraction and storage of detection calibration and calibration data, until whole TCH test channels and its each basic composition that test application is included
The calibration data configuration of unit is fully completed；
Step (5)：According to the specific test application requirement of microwave Auto-Test System, when calibration data configuration is fully completed
When, the test application of microwave Auto-Test System is carried out, and error correction is carried out according to calibration data in real time, it is accurate to obtain test
The higher test result of exactness.
Alternatively, in the step (1), the basic component units of each TCH test channel of system include and realize program control system configuration
Microwave component in each tester equipment and each TCH test channel, and by visualized graph interface guide to each basic composition
Unit carries out linking program control and calibration data file corresponding configuration.
Alternatively, in the step (3), multidimensional condition is mapped by scattering parameter by the prompting of visualized graph interface guide
Calibration data component units realization basic with each TCH test channel of system corresponding link and call configuration.
Alternatively, in the step (4), control vector network analyzer is prompted more by visualized graph interface guide
Under dimension cond the basic component units of each TCH test channel of system are scattered with the calibration test of parameter, extraction multidimensional condition is reflected
Penetrate the calibration data of scattering parameter and file designation is carried out in the form of " basic component units+multidimensional condition+scattering parameter ", is deposited
Storage and management.
Alternatively, in the step (5), according to the constructed each TCH test channel of test application and its each basic component units
Multidimensional condition maps the calibration data of scattering parameter, and according to multi-dimensional matrix Cascade algorithms, the systematic error of TCH test channel is being surveyed
Removed in test result, to obtain the higher result of test accuracy.
Alternatively, the calibration data for scattering parameter being mapped by the basic component units multidimensional condition of each TCH test channel realizes system
The multi-dimensional matrix Cascade algorithms for error correction of uniting are as follows：
Wherein, n (n >=2) represents the ordinal number of multidimensional concatenation matrix afterbody, and N (N >=2) represents multidimensional concatenation matrix
Series is cascaded, multidimensional condition is power, frequency, environmental condition.
Alternatively, the transmission parameter in the equivalent microwave network scattering parameter obtained by multi-dimensional matrix Cascade algorithms, will be micro-
The insertion loss for each TCH test channel that ripple Auto-Test System is built automatically in test process extracts and carries out test mistake
Difference amendment.
Alternatively, reflection/transmission parameter in the equivalent microwave network scattering parameter obtained by multi-dimensional matrix Cascade algorithms,
By microwave Auto-Test System in test process tested object excitation and responder each TCH test channel parameter
Feature extraction comes out, and the scattering parameter result obtained by binding test carries out cascaded operational again, realizes the mistake to test result
Difference amendment.
The beneficial effects of the invention are as follows：
Without exclusively carrying out online detection calibration in situ when testing and applying, different test applications can be directed to and carried out
The flexible combination configuration of more TCH test channels, and test accuracy under different test modes is realized by the calibration algorithm of the present invention
Undistorted transmission, in a manner of unitized, it is suitable in actual test application to meet microwave Auto-Test System to greatest extent
The technical requirements answered demand and proposed to detection calibration.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of microwave Calibration Method for ATS of the present invention based on scattering parameter cascade.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in figure 1, the microwave Calibration Method for ATS based on scattering parameter cascade of the present invention, based on figure
Interface, visualization, can flexible combination configuration wizard-like man-machine interaction steer mode, comprise the following steps：
Step 1：According to the concrete application state of microwave Auto-Test System, it is determined that calibrating and testing included whole surveys
Ping and its each basic component units, and with this carry out corresponding multidimensional condition and map the calibration data of scattering parameter configuring.
Step 2：According to the specific test application configuration information of microwave Auto-Test System, control system configures each tester
Device equipment carries out self calibration.
Step 3：According to the specific test application configuration information of microwave Auto-Test System, mapped for existing multidimensional condition
Each basic component units of scattering parameter calibration data carry out calling and the configuration of calibration data.
Step 4：According to the specific test application configuration of microwave Auto-Test System, scattering ginseng is mapped no multidimensional condition
The basic component units of each TCH test channel of system of several calibration data, prompt to perform the scattering parameter test school of multidimensional condition mapping
Accurate and calibration data extraction and storage, until test is using the whole TCH test channels and its each basic component units included
Calibration data configuration is fully completed.
Calibration data information gathering belongs to general character work based on above-mentioned steps, and corresponding school can be stored according to different conditions
Quasi- data file, it can repeatedly call and be employed without online detection calibration in situ such as and exclusively carried out when testing and applying.
Step 5：According to the specific test application requirement of microwave Auto-Test System, when calibration data configuration is fully completed
When, the test application of microwave Auto-Test System is carried out, and error correction is carried out according to calibration data in real time, it is accurate to obtain test
The higher test result of exactness.
In above-mentioned steps 1, the basic component units of each TCH test channel of system include achievable program control system configuration and respectively tested
Such as RF/Microwave cable, switching channels, RF/Microwave adapter microwave component in instrument and equipment and each TCH test channel, and
Each basic component units can be carried out linking program control and calibration data file correspondence by visualized graph interface guide
Configuration.
In above-mentioned steps 2, each tester equipment is configured by visualized graph interface guide control system to hint and carried out
Self calibration.
In above-mentioned steps 3, multidimensional condition is mapped to the calibration number of scattering parameter by the prompting of visualized graph interface guide
Configuration is linked and calls according to component units realization basic with each TCH test channel of system is corresponding.
In above-mentioned steps 4, control vector network analyzer is prompted in multidimensional condition shape by visualized graph interface guide
Under state the basic component units of each TCH test channel of system are scattered with the calibration test of parameter, extraction multidimensional condition mapping scattering ginseng
Several calibration data and so that " basic component units (title)+multidimensional condition (title)+scattering parameter (join by bidirectional reflectance/transmission
Amount, real part, imaginary data information) " form carry out file designation, storage and management.
In above-mentioned steps 5, according to the constructed each TCH test channel of test application and its each basic component units multidimensional condition
The calibration data of scattering parameter is mapped, according to multi-dimensional matrix Cascade algorithms, by the systematic error of TCH test channel in test result
Removed, to obtain the higher result of test accuracy.
In the calibration method of the present invention, the school of scattering parameter is mapped by the basic component units multidimensional condition of each TCH test channel
Quasi- data realize that the multi-dimensional matrix Cascade algorithms of systematic features are as follows：
Wherein, n (n >=2) represents the ordinal number of multidimensional concatenation matrix afterbody, and N (N >=2) represents multidimensional concatenation matrix
Series is cascaded, multidimensional condition is power, frequency, environmental condition etc..
Transmission parameter in the equivalent microwave network scattering parameter obtained by multi-dimensional matrix Cascade algorithms, can be by microwave certainly
The insertion loss (systematic error) for each TCH test channel that dynamic test system is built automatically in test process is extracted and carried out
Test error amendment.
Reflection/transmission parameter in the equivalent microwave network scattering parameter obtained by multi-dimensional matrix Cascade algorithms, it can incite somebody to action
Microwave Auto-Test System is special in the excitation for being tested object and the parameter of each TCH test channel of responder in test process
Property extract, the scattering parameter result obtained by binding test carries out cascaded operational again, it is possible to realize to test result
Error correction.
Using calibration method provided by the invention, can effectively solve in automatic testing process due to TCH test channel complexity with
And the reason such as unconventional requirement causes separate unit tester can not realize that calibration, or calibration effect can not meet to test application requirement
Technical barrier.
Using calibration method provided by the invention, microwave Auto-Test System need not carry out in situ online when testing and applying
The detection calibration of formula, as long as obtaining the information of the multidimensional condition mapping scattering parameter of the basic component units of each TCH test channel, just
The undistorted transmission of test accuracy can be obtained by calibrating computing, be produced due to the undesirable property by calibration test process
Influence it is relatively small, therefore test accuracy is of a relatively high.
Using calibration method provided by the invention, each basic component units multidimensional bar of TCH test channel is completed before need to only testing
The scattering parameter data message of the corresponding mapping of calibration test and preservation under part state, as long as each TCH test channel state is not sent out
Raw to change, difference test application need to only call corresponding calibration data information without being calibrated again according to combination, take it is short,
Efficiency high.
, only need to be to occurring when TCH test channel composition location mode changes using calibration method provided by the invention
The multidimensional condition mapping scattering parameter of the component units of change carries out calibration test and preserves respective alignment data message, without
The corresponding TCH test channel being related to is calibrated and error correction, system effective utilization are high.
Using calibration method provided by the invention, it is possible to achieve the more TCH test channel structures of visualization flexible combination configuration system
General Platform with calibrating computing, microwave Auto-Test System can be made to be carried in actual test application to adapt to different demands
For identical is high-effect, high accuracy, multi-parameter, multi-functional automatic test capability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (8)
1. a kind of microwave Calibration Method for ATS based on scattering parameter cascade, it is characterised in that schemed based on visualization
Shape interface wizard formula man-machine interaction steer mode, comprises the following steps：
Step (1)：According to the specific test application state of microwave Auto-Test System, it is determined that calibrating and testing included whole
TCH test channel and its each basic component units, and with this carry out corresponding multidimensional condition and map the calibration data of scattering parameter configuring；
Step (2)：According to the specific test application configuration information of microwave Auto-Test System, control system configures each tester
Equipment carries out self calibration；
Step (3)：According to the specific test application configuration information of microwave Auto-Test System, map and dissipate for existing multidimensional condition
Each basic component units for penetrating parametric calibration data carry out calling and the configuration of calibration data；
Step (4)：According to the specific test application configuration information of microwave Auto-Test System, no multidimensional condition is mapped and scattered
The basic component units of each TCH test channel of system of the calibration data of parameter, prompt to perform the scattering parameter test of multidimensional condition mapping
Calibration and the extraction and storage of calibration data, until whole TCH test channels and its each basic component units that test application is included
Calibration data configuration be fully completed；
Step (5)：According to the specific test application requirement of microwave Auto-Test System, when calibration data configuration is fully completed,
The test application of microwave Auto-Test System is carried out, and error correction is carried out according to calibration data in real time, it is accurate to obtain test
The higher test result of degree.
2. the microwave Calibration Method for ATS as claimed in claim 1 based on scattering parameter cascade, it is characterised in that
In the step (1), the basic component units of each TCH test channel of system include and realize each tester equipment of program control system configuration
And the microwave component in each TCH test channel, and link journey is carried out to each basic component units by visualized graph interface guide
Control and the corresponding configuration of calibration data file.
3. the microwave Calibration Method for ATS as claimed in claim 1 based on scattering parameter cascade, it is characterised in that
In the step (3), multidimensional condition is mapped with being by the calibration data of scattering parameter by the prompting of visualized graph interface guide
The basic component units of each TCH test channel of uniting realize corresponding link and call configuration.
4. the microwave Calibration Method for ATS as claimed in claim 1 based on scattering parameter cascade, it is characterised in that
In the step (4), by visualized graph interface guide prompt control vector network analyzer under multidimensional cond it is right
The basic component units of each TCH test channel of system are scattered the calibration test of parameter, the school of extraction multidimensional condition mapping scattering parameter
Quasi- data simultaneously carry out file designation, storage and management in the form of " basic component units+multidimensional condition+scattering parameter ".
5. the microwave Calibration Method for ATS as claimed in claim 1 based on scattering parameter cascade, it is characterised in that
In the step (5), dissipated according to the constructed each TCH test channel of test application and its each basic component units multidimensional condition mapping
The calibration data of parameter is penetrated, according to multi-dimensional matrix Cascade algorithms, the systematic error of TCH test channel is gone in test result
Remove, to obtain the higher result of test accuracy.
6. the microwave Calibration Method for ATS as claimed in claim 5 based on scattering parameter cascade, it is characterised in that
The calibration data that scattering parameter is mapped by the basic component units multidimensional condition of each TCH test channel realizes the more of systematic features
It is as follows to tie up matrix cascade algorithm：
Wherein, the ordinal number of n expressions multidimensional concatenation matrix afterbody, the cascade series of n >=2, N expression multidimensional concatenation matrix, N >=
2, multidimensional condition is power, frequency, environmental condition.
7. the microwave Calibration Method for ATS as claimed in claim 6 based on scattering parameter cascade, it is characterised in that
Transmission parameter in the equivalent microwave network scattering parameter obtained by multi-dimensional matrix Cascade algorithms, microwave Auto-Test System is existed
The insertion loss of each TCH test channel built automatically in test process extracts and carries out test error amendment.
8. the microwave Calibration Method for ATS as claimed in claim 6 based on scattering parameter cascade, it is characterised in that
Reflection/transmission parameter in the equivalent microwave network scattering parameter obtained by multi-dimensional matrix Cascade algorithms, microwave is tested automatically
System extracts in test process in the excitation for being tested object and the parameter characteristic of each TCH test channel of responder, ties
Close the resulting scattering parameter result of test and carry out cascaded operational again, realize the error correction to test result.
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| CN109188254B (en) * | 2018-10-26 | 2020-11-03 | 中电科仪器仪表有限公司 | Calibration method and device for measuring electrical characteristics of microwave semiconductor integrated circuit |
| CN109813965B (en) * | 2019-04-04 | 2024-06-28 | 西安弘捷电子技术有限公司 | Data acquisition system based on scattering parameter cascade |
| CN110412496B (en) * | 2019-07-29 | 2021-05-07 | 中电科思仪科技股份有限公司 | Test function quick self-checking circuit and method for integrated circuit multi-parameter tester |
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Address after: Huangdao Xiangjiang Road 266555 Shandong city of Qingdao Province, No. 98 Patentee after: CLP kesiyi Technology Co.,Ltd. Address before: 266000 No. 98 Xiangjiang Road, Huangdao District, Shandong, Qingdao Patentee before: CHINA ELECTRONIC TECHNOLOGY INSTRUMENTS Co.,Ltd. |