CN105548768A - Device and method for testing millimeter wave rotary joint variation - Google Patents
Device and method for testing millimeter wave rotary joint variation Download PDFInfo
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- CN105548768A CN105548768A CN201610020344.8A CN201610020344A CN105548768A CN 105548768 A CN105548768 A CN 105548768A CN 201610020344 A CN201610020344 A CN 201610020344A CN 105548768 A CN105548768 A CN 105548768A
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- millimeter wave
- rotary joint
- wave rotary
- connector
- variable quantity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to the field of rotary joint testing and especially relates to a device and method for testing millimeter wave rotary joint variation. The device is connected to a calibration interface of a vector network analyzer for testing the variation of a millimeter wave rotary joint. The device comprises a first millimeter wave rotary joint and a second millimeter wave rotary joint which are connected to each other through a connector. One end of the connector is fixedly connected with a rotary end of the first millimeter wave rotary joint; the other end of the connector is fixedly connected with a rotary end of the second millimeter wave rotary joint. Through rotation of the connector, the first millimeter wave rotary joint and the second millimeter wave rotary joint rotate synchronously with the connector. By use of the device, the problem of inaccurate variation test of millimeter wave rotary joints is effectively solved so that test results can be more accurate in reflecting real condition of products.
Description
[technical field]
The present invention relates to rotary joint field tests, be specifically related to a kind of device and method testing millimeter wave rotary joint variable quantity.
[background technology]
The feature of rotary joint transmits high-frequency signal by constantly rotating in the process used, and require that its high frequency performance (voltage standing wave ratio (VSWR), insertion loss, phase place etc.) variable quantity is little, so just can reach the object of the stable transmission of high-frequency signal.
The change magnitude of current performance parameter reasonable millimeter wave rotary joint is very little, can not introduce other variable quantity in a device, otherwise test result can not embody the running parameter of millimeter wave rotary joint in order to test this variable quantity at all.The handling characteristics of rotary joint determines it all to be needed to detect the high frequency performance of rotary joint under rotating environment in links such as production and processing, test, examinations, could observe the requirement that can rotary joint reach client's use more intuitively like this.
Such problem just out, often manufacturing enterprise does not use the device of the real use state of enterprise, can only test on vector network analyzer, and vector network analyzer itself can not carry out rotary test, the effect that can only reach similar rotation by auxiliary device is tested.
As shown in Figures 1 and 2, method of testing conventional at present adds test cable assembly 4 at two calibration ports of vector network analyzer, this test cable assembly needs special making, require that this cable assembly one end model is identical with vector network analyzer, and can to slotting use, other end model is identical with the round end of the 3rd tested millimeter wave rotary joint 3, and can to slotting use.And the features such as it is good to require that this cable assembly has flexibility, and bending radius is little, high frequency performance index good stability.The principle of testing rotary joint is in this way: in the process of test, utilize rotary test cable assembly to rotate to be with movable joint.
Be not difficult to find out from the test philosophy of this method of testing, in test process, not only rotary joint rotates, and test cable assembly is also in rotation.The variable quantity that the high frequency performance variable quantity of the last rotary joint drawn under rotational case not only comprises rotary joint itself also comprises test cable assembly converted quantity when rotated, and data are inaccurate.Under this proving installation, only have the variable quantity of test cable assembly little as much as possible, test result just can be made more accurate.
But current present situation is, at millimeter wave frequency band, do not have the rotation variable quantity of the electric property of a cable assembly less than rotary joint, and cable assembly is bending often, electricity function index change can be larger.The result tested out like this can not reflect the real variable quantity of rotary joint.Here we find a kind of method to can solve this problem.
[summary of the invention]
In order to solve problems of the prior art, the object of the present invention is to provide a kind of device and method testing millimeter wave rotary joint variable quantity, testing inaccurate problem to solve prior art.
For achieving the above object, the present invention adopts following technical scheme:
A kind of device testing millimeter wave rotary joint variable quantity, the variable quantity for testing millimeter wave rotary joint is connected with the calibration port of vector network analyzer, comprise the first millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6, the first described millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6 are interconnected by connector 7, one end of described connector 7 is fixedly connected with the round end of the first millimeter wave rotary joint 5, the other end of connector 7 is fixedly connected with the second millimeter wave rotary joint 6 round end, by rotary connector 7, first millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6 and connector 7 synchronous rotary.
The first described millimeter wave rotary joint 5 is identical with the second millimeter wave rotary joint 6 type.
The stiff end of the first described millimeter wave rotary joint 5 and the stiff end of the second millimeter wave rotary joint 6 are all rotatably connected with calibration port.
The reflection coefficient of described connector 7 is not more than 0.015.
Test a method for millimeter wave rotary joint variable quantity, comprise the steps:
Step one: select the millimeter wave rotary joint combination of two respectively that at least three types are identical, the rotary joint often organized and connector 7 are connected and composed millimeter wave rotary joint proving installation and be connected with vector network analyzer respectively and measure;
Step 2: the two ends of two millimeter wave rotary joint proving installations of same group in step one are connected with the second calibration port 2 with the first calibration port 1 of vector network analyzer respectively;
Step 3: rotary connector 7, obtains the total variation of millimeter wave rotary joint to be measured with two of group in step 2 by vector network analyzer measurement;
Step 4: the total variation being obtained at least three group millimeter wave rotary joints by step 2 and step 3 measurement;
Step 5: the total variation recorded by step 4 calculates the variable quantity of every only millimeter wave rotary joint to be measured.
In described step 5, by the variable quantity of following formulae discovery every millimeter wave rotary joint
Wherein: the variable quantity that any three millimeter wave rotary joints that x, y and z are respectively to be measured are corresponding respectively; The total variation that A, B and C measure when being respectively aforementioned any three millimeter wave rotary joint combination of two respectively, this solution of equations is respectively the variable quantity of any three millimeter wave rotary joints to be measured.
Compared with prior art, the present invention has following useful technique effect:
To be measured two millimeter wave rotary joints to be coupled together by adopting connector the device forming test millimeter wave rotary joint variable quantity by a kind of device and method testing millimeter wave rotary joint variable quantity of the present invention, relative non rotating between this connector and millimeter wave rotary joint to be measured, millimeter wave rotary joint to be measured with between calibration port for being rotatably connected, rotary connector can drive two millimeter wave rotary joints to be measured synchronous axial system carry out measurement changing value with it, because connector and to be measured two millimeter wave rotary joints are synchronous axial system, connector is relative indeclinable with the inner structure of the proving installation entirety that millimeter wave rotary joint forms, introduce extra variable quantity therefore can not to whole test macro, by testing out total variation.
Further, the influence factor that connector can be brought into by the many groups of test millimeter wave rotary joint to be measured by the present invention is completely eliminated, by testing out the total variation of many group millimeter wave rotary joints, obtain the variable quantity of each millimeter wave rotary joint to be measured, this test result can react the situation of change of rotary joint each high-frequency parameter in the process rotated the most accurately, for user provide the most accurately information to judge whether product can reach the requirement of system, the method is simple to operate, expense is low, and data are accurately credible.
[accompanying drawing explanation]
Fig. 1 is the device schematic diagram that prior art method of testing uses;
Fig. 2 is the device to test process schematic that prior art method of testing uses;
Fig. 3 is the schematic diagram that the present invention tests the device of millimeter wave rotary joint variable quantity;
Fig. 4 is the device to test process schematic that the present invention tests millimeter wave rotary joint variable quantity;
Fig. 5 is the structural representation of the present invention's millimeter wave rotary joint to be measured.
Wherein, the 1, first calibration port; 2, the second calibration port; 3, the 3rd millimeter wave rotary joint; 4, test cable assembly; 5, the first millimeter wave rotary joint; 6, the second millimeter wave rotary joint; 7, connector.
[embodiment]
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figures 3 to 5, a kind of device testing millimeter wave rotary joint variable quantity, the variable quantity for testing millimeter wave rotary joint is connected with the calibration port of vector network analyzer, comprise the first millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6, the first described millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6 are interconnected by connector 7, one end of described connector 7 is fixedly connected with the round end of the first millimeter wave rotary joint 5, the other end of connector 7 is fixedly connected with the second millimeter wave rotary joint 6 round end, by rotary connector 7, first millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6 and connector 7 synchronous rotary.
The first described millimeter wave rotary joint 5 is identical with the second millimeter wave rotary joint 6 type.
The stiff end of the first described millimeter wave rotary joint 5 and the stiff end of the second millimeter wave rotary joint 6 are all rotatably connected with calibration port.
The reflection coefficient of described connector 7 is not more than 0.015.
Test a method for millimeter wave rotary joint variable quantity, comprise the steps:
Step one: select the millimeter wave rotary joint combination of two respectively that at least three types are identical, the rotary joint often organized and connector 7 are connected and composed millimeter wave rotary joint proving installation and be connected with vector network analyzer respectively and measure;
Step 2: the two ends of two millimeter wave rotary joint proving installations of same group in step one are connected with the second calibration port 2 with the first calibration port 1 of vector network analyzer respectively;
Step 3: rotary connector 7, obtains the total variation of millimeter wave rotary joint to be measured with two of group in step 2 by vector network analyzer measurement;
Step 4: the total variation being obtained at least three group millimeter wave rotary joints by step 2 and step 3 measurement;
Step 5: the total variation recorded by step 4 calculates the variable quantity of every only millimeter wave rotary joint to be measured.
In described step 5, by the variable quantity of following formulae discovery every millimeter wave rotary joint
Wherein: the variable quantity that any three millimeter wave rotary joints that x, y and z are respectively to be measured are corresponding respectively; The total variation that A, B and C measure when being respectively aforementioned any three millimeter wave rotary joint combination of two respectively, this solution of equations is respectively the variable quantity of any three millimeter wave rotary joints to be measured.
Further, concrete test philosophy of the present invention and method as follows:
Test the identical millimeter wave rotary joint of two types when testing simultaneously, two rotary joints are linked together with one and their mutually static connectors 7, by rotating the middle millimeter wave rotary joint synchronous rotary of connector 7 with movement connector 7 two ends after connecting, the result of such rotary test is total embodiment of two millimeter wave rotary joint variable quantities.Although in test process, middle connector 7 is also in rotation, but it is in the rotation doing 360 degree with the millimeter wave rotary joint at two ends, the millimeter wave rotary joint at two ends changes without relative with the inner structure of the proving installation that connector 7 forms, and introduces extra variable quantity would not to so whole test macro.
The device of test millimeter wave rotary joint variable quantity of the present invention in use, requires that the first calibration port 1 receives the stiff end of the first millimeter wave rotary joint 5, the second calibration port 2 is received the stiff end of the second millimeter wave rotary joint 6.The two ends of the connector 7 used during test are connected with the round end of the first millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6 respectively.After being connected and fixed, drive the first millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6 synchronous rotary by rotary connector 7, thus test draws the total variation of the first millimeter wave rotary joint 5 and the second millimeter wave rotary joint 6.The first millimeter wave rotary joint 5 and the respective variable quantity of the second millimeter wave rotary joint 6 is drawn respectively by calculating.
When testing:
The first step: select the millimeter wave rotary joint that at least three of the same type, be numbered X, Y and Z respectively, and this establishes the variable quantity of these three millimeter wave rotary joints to be respectively x, y and z.
Second step: select and aly connect machine 7, require that the high frequency performance of itself is very good at millimeter wave band, at least reflection coefficient is within 0.015, and two of this connector 7 ports can be connected to the stiff end of millimeter wave rotary joint.
3rd: two of vector network analyzer input ports i.e. the first calibration port 1 is all connected into the port type that directly can be connected millimeter wave rotary joint stiff end with the second calibration port 2.
4th step: by any two millimeter wave rotary joint combination of two, then the proving installation formed with connector 7 is connected with the calibration port of vector network analyzer to be tested, array mode is respectively (X, Y), (X, and (Y Z), Z), show that the total variation of two millimeter wave rotary joints is respectively A, B and C according to this combined test.
5th step: by following formula:
x+y＝A
x+z＝B
y+z＝C
Draw:
x＝(A+B-C)/2
y＝(C-B+A)/2
z＝(B-A+C)/2
Influence factor connector can brought into completely by testing many groups millimeter wave rotary joint to be measured is eliminated, finally draw the most accurate test result, the situation of change of rotary joint each high-frequency parameter in the process rotated can be reacted the most accurately, for user provide the most accurately information to judge whether product can reach the requirement of system, the method is simple to operate, expense is low, and data are accurately credible.Effectively solve a single channel rotary joint test variable quantity inaccurate difficult problem, make test result more can accurately the truth of reactor product.
Claims (6)
1. test the device of millimeter wave rotary joint variable quantity for one kind, the variable quantity for testing millimeter wave rotary joint is connected with the calibration port of vector network analyzer, it is characterized in that, comprise the first millimeter wave rotary joint (5) and the second millimeter wave rotary joint (6), the first described millimeter wave rotary joint (5) and the second millimeter wave rotary joint (6) are interconnected by connector (7), one end of described connector (7) is fixedly connected with the round end of the first millimeter wave rotary joint (5), the other end of connector (7) is fixedly connected with the second millimeter wave rotary joint (6) round end, by rotary connector (7), first millimeter wave rotary joint (5) and the second millimeter wave rotary joint (6) and connector (7) synchronous rotary.
2. a kind of device testing millimeter wave rotary joint variable quantity according to claim 1, is characterized in that, the first described millimeter wave rotary joint (5) is identical with the second millimeter wave rotary joint (6) type.
3. a kind of device testing millimeter wave rotary joint variable quantity according to claim 1, it is characterized in that, the stiff end of the first described millimeter wave rotary joint (5) and the stiff end of the second millimeter wave rotary joint (6) are all rotatably connected with calibration port.
4. a kind of device testing millimeter wave rotary joint variable quantity according to claim 1, is characterized in that, the reflection coefficient of described connector (7) is not more than 0.015.
5. test a method for millimeter wave rotary joint variable quantity, it is characterized in that, comprise the steps:
Step one: select the millimeter wave rotary joint combination of two respectively that at least three types are identical, the rotary joint often organized and connector (7) are connected and composed millimeter wave rotary joint proving installation and be connected with vector network analyzer respectively and measure;
Step 2: the two ends of two millimeter wave rotary joint proving installations of same group in step one are connected with the second calibration port (2) with first calibration port (1) of vector network analyzer respectively;
Step 3: rotary connector (7), obtains the total variation of millimeter wave rotary joint to be measured with two of group in step 2 by vector network analyzer measurement;
Step 4: the total variation being obtained at least three group millimeter wave rotary joints by step 2 and step 3 measurement;
Step 5: the total variation recorded by step 4 calculates the variable quantity of every only millimeter wave rotary joint to be measured.
6. a kind of method of testing millimeter wave rotary joint variable quantity according to claim 5, is characterized in that, in described step 5, by the variable quantity of following formulae discovery every millimeter wave rotary joint
Wherein: the variable quantity that any three millimeter wave rotary joints that x, y and z are respectively to be measured are corresponding respectively; The total variation that A, B and C measure when being respectively aforementioned any three millimeter wave rotary joint combination of two respectively, this solution of equations is respectively the variable quantity of any three millimeter wave rotary joints to be measured.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020344.8A CN105548768B (en) | 2016-01-13 | 2016-01-13 | A kind of device and method for testing millimeter wave rotary joint variable quantity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610020344.8A CN105548768B (en) | 2016-01-13 | 2016-01-13 | A kind of device and method for testing millimeter wave rotary joint variable quantity |
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| Publication Number | Publication Date |
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| CN105548768A true CN105548768A (en) | 2016-05-04 |
| CN105548768B CN105548768B (en) | 2018-04-03 |
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| CN201610020344.8A Active CN105548768B (en) | 2016-01-13 | 2016-01-13 | A kind of device and method for testing millimeter wave rotary joint variable quantity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308334A (en) * | 2019-05-31 | 2019-10-08 | 西安空间无线电技术研究所 | A kind of rotary joint standing wave when Insertion Loss test method |
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| US4995837A (en) * | 1989-08-30 | 1991-02-26 | Amp Incorporated | Precision test connector |
| US5824953A (en) * | 1995-12-26 | 1998-10-20 | Electronics And Telecommunications Research Institute | Coaxial connector for vacuum chamber for microwave and millimeter wave measurement |
| CN201773921U (en) * | 2010-08-04 | 2011-03-23 | 杨春 | Waveguide coaxial microwave converter |
| CN201993421U (en) * | 2010-11-18 | 2011-09-28 | 四川九洲电器集团有限责任公司 | System for automatically testing front ends of millimeter waves |
| CN202018486U (en) * | 2011-03-07 | 2011-10-26 | 中国电子科技集团公司第十三研究所 | Testing device for microwave surface-mounting component |
| CN202471767U (en) * | 2012-02-23 | 2012-10-03 | 深圳市速联连接器有限公司 | Quick point test connector |
| CN204517073U (en) * | 2015-04-22 | 2015-07-29 | 陕西华达科技股份有限公司 | A kind of RF coaxial adapters with spinfunction |
| CN205484590U (en) * | 2016-01-13 | 2016-08-17 | 西安艾力特电子实业有限公司 | Device of test millimeter wave rotary joint change volume |
-
2016
- 2016-01-13 CN CN201610020344.8A patent/CN105548768B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4995837A (en) * | 1989-08-30 | 1991-02-26 | Amp Incorporated | Precision test connector |
| US5824953A (en) * | 1995-12-26 | 1998-10-20 | Electronics And Telecommunications Research Institute | Coaxial connector for vacuum chamber for microwave and millimeter wave measurement |
| CN201773921U (en) * | 2010-08-04 | 2011-03-23 | 杨春 | Waveguide coaxial microwave converter |
| CN201993421U (en) * | 2010-11-18 | 2011-09-28 | 四川九洲电器集团有限责任公司 | System for automatically testing front ends of millimeter waves |
| CN202018486U (en) * | 2011-03-07 | 2011-10-26 | 中国电子科技集团公司第十三研究所 | Testing device for microwave surface-mounting component |
| CN202471767U (en) * | 2012-02-23 | 2012-10-03 | 深圳市速联连接器有限公司 | Quick point test connector |
| CN204517073U (en) * | 2015-04-22 | 2015-07-29 | 陕西华达科技股份有限公司 | A kind of RF coaxial adapters with spinfunction |
| CN205484590U (en) * | 2016-01-13 | 2016-08-17 | 西安艾力特电子实业有限公司 | Device of test millimeter wave rotary joint change volume |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308334A (en) * | 2019-05-31 | 2019-10-08 | 西安空间无线电技术研究所 | A kind of rotary joint standing wave when Insertion Loss test method |
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| CN105548768B (en) | 2018-04-03 |
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