CN110542889A - Parallel multi-measurement calibration system and calibration method for vector network analyzer - Google Patents
Parallel multi-measurement calibration system and calibration method for vector network analyzer Download PDFInfo
- Publication number
- CN110542889A CN110542889A CN201910771151.XA CN201910771151A CN110542889A CN 110542889 A CN110542889 A CN 110542889A CN 201910771151 A CN201910771151 A CN 201910771151A CN 110542889 A CN110542889 A CN 110542889A
- Authority
- CN
- China
- Prior art keywords
- calibration
- measurement
- class
- module
- standard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012937 correction Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 238000012512 characterization method Methods 0.000 claims description 6
- 230000006870 function Effects 0.000 abstract description 12
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a parallel multi-measurement calibration system and a calibration method for a vector network analyzer. The various measurement class calibration sections include a measurement class, a standard class, and other classes. The standard measurement type general setting part comprises a connecting port module, a calibration piece module and a direct connection mode module. The measurement and calibration part comprises a standard setting module, a standard component connecting step module, a single standard component measuring module, a calibration algorithm module and the like. According to the invention, the functions are divided according to the modules, so that the system establishment and the realization of the parallel multi-measurement calibration function are completed. The system enables the calibration of the vector network analyzer to be an intelligent, automatic and oriented process. The analyzer is set by a user, the user only needs to configure and operate according to the guide, the analyzer automatically determines the calibration step, and meanwhile, the measurement is automatically controlled, and the calibration and correction are automatically completed.
Description
Technical Field
The invention relates to the field of vector network analyzers, in particular to a parallel multi-measurement calibration system and a calibration method for a vector network analyzer.
Background
The vector network analyzer is a general microwave and millimeter wave special test instrument, and can measure the special characteristics of components such as an amplifier, a mixer, a filter, a coupler, an attenuator and the like, wherein each measurement corresponds to a calibration mode. For example, for amplifier gain compression and frequency conversion gain compression, the analyzer sets gain compression and frequency conversion gain compression measurement classes respectively; a mixer, the analyzer sets scalar and vector mixer calibration measurements; the coupler, the attenuator and the like need to carry out multi-port calibration measurement under a standard class; meanwhile, there are also noise coefficient measurement, intermodulation measurement, spectrum measurement, and the like.
The disadvantages of the individual design of each calibration mode become more and more obvious as the number of measurement classes increases.
Firstly, the operation interface has various characteristics, which causes troubles to operators and is not beneficial to popularization and application. Secondly, the designer has a large workload, a complicated design and poor universality, and when a new calibration function is perfected or added, the repetitive work is more, especially for a reusable setting part. Third, maintenance of the software code is significantly disturbed.
disclosure of Invention
Aiming at the problems of numerous calibration modes, inconvenience in use and poor universality existing when the conventional vector network analyzer measures various components, the invention provides a parallel multi-measurement calibration system of the vector network analyzer.
The invention adopts the following technical scheme:
the parallel multi-measurement calibration system of the vector network analyzer comprises a plurality of measurement calibration parts, a standard measurement universal setting part and a measurement calibration part which are sequentially connected; the calibration part of the multiple measurement classes comprises a measurement class, a standard class and other classes; the standard measurement type general setting part comprises a connecting port module, and the connecting port module is connected with a calibration piece module and a direct connection mode module;
The measurement and calibration part comprises a standard setting module, the standard setting module is connected with a standard component connecting step module, the standard component connecting step module is connected with a single standard component measuring module, the single standard component measuring module is connected with a calibration algorithm module, and the calibration algorithm module is connected with a correction algorithm module.
Preferably, the measurement class comprises a frequency conversion class and a non-frequency conversion class, and the frequency conversion class comprises a frequency conversion gain compression calibration class, a vector mixer calibration class, a scalar mixer calibration class and a frequency conversion noise calibration class;
the non-frequency conversion class comprises a gain compression calibration class, a thermal state S parameter calibration class, an intermodulation calibration class and a cold source noise calibration class.
Preferably, the standard class is a non-wizard standard class and a wizard standard class.
Preferably, the other classes include an electrical calibration class, a power calibration class, and a receiver calibration class.
Preferably, the connection port module includes an interface, and the interface prompts a user to set a port connection type and a port polarity according to the connection characteristics of the tested piece;
The calibration piece module comprises an electronic calibration piece and a mechanical calibration piece, wherein the electronic calibration piece is automatically added into a calibration piece list according to the set port connection type and the set port polarity and is arranged behind the mechanical calibration piece;
The mechanical calibration piece has an editing function, wherein the editing function comprises the steps of modifying, adding or deleting a certain calibration piece or a certain standard of a certain calibration piece, and also comprises the steps of replying, importing and exporting the calibration piece.
Preferably, the standard setting module comprises a calibration piece type selection module and a through mode selection module, and whether power meter calibration, receiver calibration and mixer characterization are carried out or not is further selected according to different calibration types;
the standard component connection step module can gradually remind a user to connect the standard components, select a measurement and calibration set and the like according to the calculated connection requirements until the calibration is finally finished;
After connection and measurement are finished for each standard part in the single-standard-part measurement module, a system can automatically judge measurement parameters and measurement times and simultaneously control a vector network analyzer to scan, so that required measurement data are obtained and stored;
after the calibration algorithm module finishes calibration, the system performs mathematical operation according to all the previously tested measurement data and the known data of the standard component to obtain an error coefficient required by the whole vector network analyzer;
The correction algorithm module can automatically calculate the real characteristics of the tested piece according to the error coefficient and the measurement data of the vector network analyzer to the tested piece.
The invention also provides a calibration method of the parallel multi-measurement calibration system of the vector network analyzer.
the calibration method of the parallel multi-measurement calibration system of the vector network analyzer adopts the parallel multi-measurement calibration system of the vector network analyzer, and comprises the following steps:
Step 1: selecting a calibration class from a plurality of measurement class calibration parts according to a measured piece;
the user can manually select the required calibration type according to the type of the tested piece, and the system can enter the corresponding calibration class according to the selection of the user and prompt the user to carry out measurement setting;
Step 2: the standard measurement type general setting part is used for carrying out calibration setting and comprises the setting of a connection port module and the setting of a calibration piece;
The calibration setting comprises the steps of selecting a port type, a calibration piece type and a through mode, and selecting whether to carry out power meter calibration, receiver calibration and mixer characterization according to different calibration types.
And step 3: the measurement calibration part performs measurement calibration;
the system can gradually prompt a user to connect the standard components of the corresponding types according to the calibration step and measure; in the measuring process, the system can measure corresponding parameters according to the type of the standard component and automatically control the measuring times; and controlling the vector network analyzer to scan, obtain the measurement data and store the measurement data.
the invention has the beneficial effects that:
A modularized design concept is adopted, a calibration method of dozens of measurement classes is fully considered, on the basis, the common part and the own part of each measurement class are effectively divided, and dozens of parallel modules are separated. Therefore, a calibration framework based on multiple measurement classes is built, and the whole process comprises organic division and coordination work of dozens of functional modules.
the whole system fully considers the compatibility of electronic calibration, and the multi-measurement calibration realized at present can support not only a mechanical calibration piece but also an electronic calibration piece, and support the mixed use of the mechanical calibration piece and the electronic calibration piece.
the design of the invention enables the calibration process corresponding to each measurement class to be a building block building process, and the invention has easy operability and usability in the aspects of expansion of new calibration functions and maintenance of old calibration functions. The functions which can be realized at present are expanded to nearly ten functions such as gain compression, variable frequency gain compression, vector mixers, scalar mixers, cold source noise coefficients, thermal state S parameters and the like from the original standard class.
Drawings
Fig. 1 is a schematic structural diagram of a parallel multi-measurement calibration system of a vector network analyzer.
FIG. 2 is a schematic diagram of a calibration portion of the various measurement types.
FIG. 3 is a schematic diagram of step 1 of example 3.
FIG. 4 is a partial schematic view of step 2 in example 3.
FIG. 5 is another partial schematic view of step 2 in example 3.
FIG. 6 is a partial schematic view of step 3 in example 3.
FIG. 7 is another partial schematic view of step 3 in example 3.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
example 1
with reference to fig. 1 and 2, the parallel multi-measurement calibration system for the vector network analyzer includes a multiple-measurement calibration portion, a standard-measurement universal setting portion, and a measurement calibration portion, which are sequentially connected.
The multiple measurement class calibration part comprises a measurement class, a standard class and other classes.
The standard measurement type general setting part comprises a connecting port module, and the connecting port module is connected with a calibration piece module and a direct connection mode module.
the measurement and calibration part comprises a standard setting module, the standard setting module is connected with a standard component connecting step module, the standard component connecting step module is connected with a single standard component measuring module, the single standard component measuring module is connected with a calibration algorithm module, and the calibration algorithm module is connected with a correction algorithm module.
The measurement class comprises a frequency conversion class and a non-frequency conversion class, and the frequency conversion class comprises a frequency conversion gain compression calibration class, a vector mixer calibration class, a scalar mixer calibration class, a frequency conversion noise calibration class and the like.
The non-frequency conversion class comprises a gain compression calibration class, a thermal state S parameter calibration class, an intermodulation calibration class, a cold source noise calibration class and the like.
The standard class is a non-wizard standard class and a wizard standard class.
other classes include an electrical calibration class, a power calibration class, and a receiver calibration class.
electronic calibrators, power meters, etc. are introduced during the measurement. The former is an automatic calibration function, and the latter can precisely and quantitatively determine the power of the output port of the network instrument.
the connection port module comprises an interface, and the interface can prompt a user to set the port connection type and the port polarity according to the connection characteristic of the tested piece, so that the requirement that the setting of the vector network potentiometer is consistent with the characteristic of the tested piece is met.
the calibration piece module comprises an electronic calibration piece and a mechanical calibration piece, wherein the electronic calibration piece is automatically added into a calibration piece list according to the set port connection type and port polarity and is arranged behind the mechanical calibration piece, and a user can select the electronic calibration piece module according to needs.
the mechanical calibration piece has an editing function, wherein the editing function comprises the steps of modifying, adding or deleting a certain calibration piece or a certain standard of a certain calibration piece, and also comprises the steps of replying, importing and exporting the calibration piece.
The standard setting module comprises the steps of selecting a type of a calibration piece and a through mode, and selecting whether to perform power meter calibration, receiver calibration, mixer characterization and the like according to different calibration types.
The standard component connection step module can gradually remind a user to connect the standard components, select a measurement and calibration set and the like according to the calculated connection requirements until the calibration is finally finished;
after connection and measurement are finished for each standard part in the single standard part measurement module, the system can automatically judge measurement parameters and measurement times and simultaneously control the vector network analyzer to scan, so that required measurement data are obtained and stored.
after the calibration algorithm module finishes calibration, the system performs mathematical operation according to all the measured data tested before and the data of the known standard component to obtain the error coefficient required by the whole vector network analyzer.
the correction algorithm module can automatically calculate the real characteristics of the tested piece according to the error coefficient and the measurement data of the vector network analyzer to the tested piece.
for the error coefficients and the test state, the system will be stored in the memory to form a calibration set, and the user can also choose to store the calibration set as a culture file.
Example 2
The wizard calibration in the standard class belongs to an intelligent calibration mode, the user can automatically calibrate after simply configuring the tested part, meanwhile, the 16-port calibration can be expanded, and the non-wizard calibration is only suitable for calibration within a double port, including some special open-circuit frequency responses, direct-connection frequency responses, enhanced response calibration and the like.
The calibration method of the parallel multi-measurement calibration system of the vector network analyzer adopts the parallel multi-measurement calibration system of the vector network analyzer in the embodiment 1, and comprises the following steps:
Step 1: selecting a calibration class from a plurality of measurement class calibration parts according to a measured piece;
The user can manually select the type of calibration needed according to the type of the tested piece, for example, the mixer can use scalar mixer calibration or vector mixer calibration, etc. The system enters a corresponding calibration class according to the selection of the user and prompts the user to carry out measurement setting;
Step 2: the standard measurement type general setting part is used for carrying out calibration setting and comprises the setting of a connection port module and the setting of a calibration piece;
The calibration setting comprises the steps of selecting a port type, a calibration piece type and a through mode, and selecting whether to carry out power meter calibration, receiver calibration and mixer characterization according to different calibration types.
And step 3: the measurement calibration part performs measurement calibration;
the system can gradually prompt a user to connect the standard components of the corresponding types according to the calibration step and measure; in the measuring process, the system can measure corresponding parameters according to the type of the standard component and automatically control the measuring times; and controlling the vector network analyzer to scan, obtain the measurement data and store the measurement data.
example 3
Taking vector mixer calibration as an example, the vector mixer is subjected to calibration test by the above procedure.
step 1 is shown in fig. 3, step 2 is shown in fig. 4 and 5, and step 3 is shown in fig. 6 and 7.
it is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (7)
1. the parallel multi-measurement calibration system of the vector network analyzer is characterized by comprising a plurality of measurement calibration parts, a standard measurement universal setting part and a measurement calibration part which are sequentially connected; the calibration part of the multiple measurement classes comprises a measurement class, a standard class and other classes; the standard measurement type general setting part comprises a connecting port module, and the connecting port module is connected with a calibration piece module and a direct connection mode module;
The measurement and calibration part comprises a standard setting module, the standard setting module is connected with a standard component connecting step module, the standard component connecting step module is connected with a single standard component measuring module, the single standard component measuring module is connected with a calibration algorithm module, and the calibration algorithm module is connected with a correction algorithm module.
2. The vector network analyzer parallel multi-measurement class calibration system of claim 1, wherein the measurement classes include a frequency conversion class and a non-frequency conversion class, the frequency conversion class including a frequency conversion gain compression calibration class, a vector mixer calibration class, a scalar mixer calibration class, and a frequency conversion noise calibration class;
The non-frequency conversion class comprises a gain compression calibration class, a thermal state S parameter calibration class, an intermodulation calibration class and a cold source noise calibration class.
3. The vector network analyzer parallel multi-measurement class calibration system of claim 1, wherein the standard class is a non-guided standard class and a guided standard class.
4. The vector network analyzer parallel multi-measurement class calibration system of claim 1, wherein the other classes include an electrical calibration class, a power calibration class, and a receiver calibration class.
5. The system for calibrating the parallel multiple measurement types of the vector network analyzer according to claim 1, wherein the connection port module comprises an interface, and the interface prompts a user to set a port connection type and a port polarity according to the connection characteristics of a tested piece;
the calibration piece module comprises an electronic calibration piece and a mechanical calibration piece, wherein the electronic calibration piece is automatically added into a calibration piece list according to the set port connection type and the set port polarity and is arranged behind the mechanical calibration piece;
The mechanical calibration piece has an editing function, wherein the editing function comprises the steps of modifying, adding or deleting a certain calibration piece or a certain standard of a certain calibration piece, and also comprises the steps of replying, importing and exporting the calibration piece.
6. The vector network analyzer parallel multi-measurement class calibration system of claim 1,
The standard setting module comprises a calibration piece type selection module and a direct-through mode selection module, and whether power meter calibration, receiver calibration and mixer characterization are carried out or not is selected according to different calibration types;
The standard component connection step module can gradually remind a user to connect the standard components, select a measurement and calibration set and the like according to the calculated connection requirements until the calibration is finally finished;
after connection and measurement are finished for each standard part in the single-standard-part measurement module, a system can automatically judge measurement parameters and measurement times and simultaneously control a vector network analyzer to scan, so that required measurement data are obtained and stored;
after the calibration algorithm module finishes calibration, the system performs mathematical operation according to all the previously tested measurement data and the known data of the standard component to obtain an error coefficient required by the whole vector network analyzer;
the correction algorithm module can automatically calculate the real characteristics of the tested piece according to the error coefficient and the measurement data of the vector network analyzer to the tested piece.
7. the calibration method of the parallel multi-measurement calibration system of the vector network analyzer is characterized in that the parallel multi-measurement calibration system of the vector network analyzer is adopted, and the calibration method comprises the following steps:
Step 1: selecting a calibration class from a plurality of measurement class calibration parts according to a measured piece;
The user can manually select the required calibration type according to the type of the tested piece, and the system can enter the corresponding calibration class according to the selection of the user and prompt the user to carry out measurement setting;
Step 2: the standard measurement type general setting part is used for carrying out calibration setting and comprises the setting of a connection port module and the setting of a calibration piece;
The calibration setting comprises the steps of selecting a port type, a calibration piece type and a through mode, and selecting whether to carry out power meter calibration, receiver calibration and mixer characterization according to different calibration types.
and step 3: the measurement calibration part performs measurement calibration;
The system can gradually prompt a user to connect the standard components of the corresponding types according to the calibration step and measure; in the measuring process, the system can measure corresponding parameters according to the type of the standard component and automatically control the measuring times; and controlling the vector network analyzer to scan, obtain the measurement data and store the measurement data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771151.XA CN110542889A (en) | 2019-08-21 | 2019-08-21 | Parallel multi-measurement calibration system and calibration method for vector network analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771151.XA CN110542889A (en) | 2019-08-21 | 2019-08-21 | Parallel multi-measurement calibration system and calibration method for vector network analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542889A true CN110542889A (en) | 2019-12-06 |
Family
ID=68711836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910771151.XA Pending CN110542889A (en) | 2019-08-21 | 2019-08-21 | Parallel multi-measurement calibration system and calibration method for vector network analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110542889A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017044498A1 (en) * | 2015-09-10 | 2017-03-16 | Ataitec Corporation | Fixture de-embedding using calibration structures with open and short terminations |
| CN109254257A (en) * | 2018-11-12 | 2019-01-22 | 中电科仪器仪表有限公司 | A kind of mixing calibration method of multiport vector network analyzer |
| CN109782208A (en) * | 2019-03-04 | 2019-05-21 | 上海精密计量测试研究所 | Vector network analyzer automatic calibration device and calibration method |
-
2019
- 2019-08-21 CN CN201910771151.XA patent/CN110542889A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017044498A1 (en) * | 2015-09-10 | 2017-03-16 | Ataitec Corporation | Fixture de-embedding using calibration structures with open and short terminations |
| CN109254257A (en) * | 2018-11-12 | 2019-01-22 | 中电科仪器仪表有限公司 | A kind of mixing calibration method of multiport vector network analyzer |
| CN109782208A (en) * | 2019-03-04 | 2019-05-21 | 上海精密计量测试研究所 | Vector network analyzer automatic calibration device and calibration method |
Non-Patent Citations (2)
| Title |
|---|
| 晟曦: "AV3672系列矢量网络分析仪在混频器矢量测试中的应用", 《贤集网》 * |
| 朱晓亮: "矢量网络分析仪测量信号功率及相位校正技术研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107733539B (en) | A test method and system for satellite-borne multi-channel microwave receiver/frequency converter | |
| CN106027170B (en) | The digital miniaturization radio equipment automatic testing equipment of one kind and system | |
| CN108650033B (en) | Test method, test terminal, test system and storage medium of radio frequency device | |
| CN101251573B (en) | Automatic Test Method for Third-Order Intermodulation Distortion of Mixer in RF Tuner Chip | |
| CN113358946A (en) | Spread spectrum module, on-chip test system and S parameter and noise coefficient test method thereof | |
| CN109302713A (en) | High coverage RF index automatic test device | |
| CN101738604A (en) | Automatic test system for millimeter wave receiver | |
| JPS6134473A (en) | Network analyzer | |
| CN113746498A (en) | TR component performance comprehensive test system and test method | |
| US20220276329A1 (en) | Intelligent instrument verification system and method | |
| CN105610522A (en) | Detection system and method for universal Beidou radio frequency module | |
| CN104539250A (en) | Debugging method, device and system of power amplifier | |
| CN114050878A (en) | Method and device for automatically testing stray suppression of multi-channel radio frequency system | |
| CN109343014B (en) | Apparatus and method for testing T/R component of phased array radar | |
| CN117250483A (en) | Chip test system and method | |
| JPH0222565A (en) | Signal measuring apparatus and method | |
| CN117783848A (en) | Automatic test method and device based on matrix switch | |
| US7065466B2 (en) | Attenuator test system | |
| CN110542889A (en) | Parallel multi-measurement calibration system and calibration method for vector network analyzer | |
| CN114063030B (en) | Automatic testing system of high-isolation active antenna array surface | |
| CN116668323A (en) | Automatic test system and method based on ultrashort wave communication equipment | |
| CN108055091A (en) | A kind of millimeter wave self calibration virtual instrument and its implementation | |
| CN216531790U (en) | Multi-tool automatic test system and single-tool automatic test system | |
| CN112485739B (en) | Method for realizing rapid power calibration processing aiming at multi-port vector network analyzer | |
| CN120320873A (en) | A multi-channel radio frequency front-end rapid calibration and detection system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191206 |