CN105891261A - Plating material passive intermodulation online testing device based on dual-mode transmission line structures - Google Patents
Plating material passive intermodulation online testing device based on dual-mode transmission line structures Download PDFInfo
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- CN105891261A CN105891261A CN201610279874.4A CN201610279874A CN105891261A CN 105891261 A CN105891261 A CN 105891261A CN 201610279874 A CN201610279874 A CN 201610279874A CN 105891261 A CN105891261 A CN 105891261A
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention discloses a plating material passive intermodulation online testing device based on dual-mode transmission line structures. The plating material passive intermodulation online testing device comprises a fixing support, a base, a cavity matrix, an integrated inner conductor, a first radiofrequency coaxial connector, a second radiofrequency coaxial connector and a PIM (passive intermodulation) analyzer. The cavity matrix is fixed onto the base through the fixing support, two ends of the integrated inner conductor penetrate the left side surface and the right side surface of the cavity matrix respectively, one end of the integrated inner conductor is connected with the PIM analyzer by the first radiofrequency coaxial connector, the other end of the integrated inner conductor is connected with the PIM analyzer by the second radiofrequency coaxial connector, an air cavity is formed between the bottom surface of the integrated inner conductor and the bottom surface of the cavity matrix, a to-be-tested sample can be arranged in the cavity matrix via an opening in the top of the cavity matrix, gaps are reserved between the lower surface of the to-be-tested sample and the upper surface of the integrated inner conductor, and the lower surface of the to-be-tested sample is parallel to the upper surface of the integrated inner conductor. The plating material passive intermodulation online testing device has the advantage that passive intermodulation online tests on plating materials can be completed quickly and accurately by the aid of the plating material passive intermodulation online testing device.
Description
Technical field
The invention belongs to coating performance field tests, relate to a kind of based on dual mode transmission line structure
Coating material passive intermodulation online testing device.
Background technology
Two or more carrier signals, through having the parts of nonlinear response, can produce
Being different from the new signal of carrier frequency, this phenomenon is referred to as passive intermodulation.Passive intermodulation (passive
Intermodulation PIM) refer to that the transmitting carrier wave of two or more frequencies is in passive non-thread
The spurious signal being blended to produce in property device, it is to modern high power, multichannel communication system
System causes severe jamming.
Currently, with respect to the passive cross modulation test of coating material, it is based primarily upon laboratory specific environment.
General about material and the scheme of the passive cross modulation test of coating, be substantially existing coaxial or
In waveguide, realize passive intermodulation by changing internal and external conductor or the material of metal contact surface and coating
The assessment of index.But owing to existing coaxial or waveguide itself is as known standard component, its envelope
Close structure so that in the Renewal process of part to be measured, often will connect unreliability and introduce, and make
Obtain in test result and comprise uncertain factor, thus affect the accuracy of test.And coating material exists
Extensively application in communication device makes the intermodulation index evaluation to it of far-reaching significance.Traditional is passive
During intermodulation testing, before calibration tends to occur at test, it is come by known align mode
The remaining intermodulation index of assessment test loop, after having calibrated, then is carried out by changing part to be measured
Next step test.It is right that the repeatedly connection reality introduced in this process has changed original calibration
Answering state, the original residual intermodulation index of its assessment does not has correspondence, the speed therefore tested
Relatively slow, and the accuracy tested is poor.
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, it is provided that a kind of based on bimodulus
The coating material passive intermodulation online testing device of formula transmission line structure, this device can be quick, accurate
The true passive intermodulation on-line testing completing coating material.
For reaching above-mentioned purpose, coating material based on dual mode transmission line structure of the present invention
Passive intermodulation online testing device include fixed support, base, cavity parent, integration inner wire,
First radio frequency (RF) coaxial connector, the second radio frequency (RF) coaxial connector and PIM analyser；
Cavity parent is fixed on base by fixed support, two sides and top before and after cavity parent
The equal opening in portion, the two ends of integration inner wire are each passed through the left and right sides of cavity parent, integrally
The one end changing inner wire is connected with PIM analyser by the first radio frequency (RF) coaxial connector, integration
The other end of inner wire is connected with PIM analyser by the second radio frequency (RF) coaxial connector, integration
Form air chamber between the bottom surface of inner wire and cavity parent, treat test sample opening through cavity parent top
Mouth is put in cavity parent, and treats between the lower surface of test sample and the upper surface of integrated inner wire
There is gap and be parallel to each other.
The two ends of integration inner wire are all fixed on by dielectric ring on the outer wall of cavity parent.
One end of integration inner wire is connected with the outer conductor in the first radio frequency (RF) coaxial connector, and one
Outer conductor in the other end of body inner wire and the second radio frequency (RF) coaxial connector is connected, wherein,
Outer conductor in integration inner wire and the first radio frequency (RF) coaxial connector and the second radio frequency (RF) coaxial connector
In outer conductor between impedance be 50 Ω.
First radio frequency (RF) coaxial connector and the second radio frequency (RF) coaxial connector are 7/16 adapter.
Base is optical mount.
Fixed support is secured by bolts on base.
The method have the advantages that
Coating material passive intermodulation on-line testing based on dual mode transmission line structure of the present invention
Device, when concrete operations, only needs successively difference to be treated, test sample is placed into the cavity parent of open on three sides
In, thus constitute the rectangle transmission line structure of four sides cincture, when test, by PIM analyser
Switch between calibration mode and test pattern, it is thus achieved that after real time calibration, treat the mutual tone pitch of test sample,
Realize treating the rapid comparison assessment of test sample, avoid that test loop occurs uncertain shadow simultaneously
Ring test result, improve the accuracy of test.It addition, treat that the lower surface of test sample is led in integrated
The upper surface of body is parallel, so that treating that the contact interface of test sample is parallel with the direction of exciting current,
So that treating that the passive intermodulation characteristic of test sample highlights, it is to avoid treat that on test sample contact surface, contact pressure is to survey
The impact of examination structure.
Further, described base is optical mount, thus effectively reduces extraneous vibration to test knot
The interference of structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of cavity parent 2 in the present invention；
Fig. 2 is the sectional view of cavity parent 2 in the present invention；
Fig. 3 is the structural representation of the present invention；
Fig. 4 is the test philosophy figure of the present invention；
Fig. 5 is test flow chart of the present invention；
Fig. 6 is the contact pressure of the present invention test result figure to interface passive intermodulation characteristic；
Fig. 7 is the test design sketch that the present invention tests different coating.
Wherein, 1 it is the first radio frequency (RF) coaxial connector, 2 is cavity parent, 3 is the second radio-frequency (RF) coaxial
Adapter, 4 be dielectric ring, 5 integrated inner wires, 6 be air chamber, 7 be base, 8 be
Fixed support, 9 it is PIM analyser.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail:
With reference to Fig. 1, Fig. 2 and Fig. 3, coating based on dual mode transmission line structure of the present invention
Material passive intermodulation online testing device includes fixed support 8, base 7, cavity parent 2, integrally
Change inner wire the 5, first radio frequency (RF) coaxial connector the 1, second radio frequency (RF) coaxial connector 3 and PIM to analyze
Instrument 9；Cavity parent 2 is fixed on base 7, before and after cavity parent 2 by fixed support 8
The equal opening in two sides and top, the two ends of integration inner wire 5 are each passed through a left side for cavity parent 2
Right two sides, one end of integration inner wire 5 is divided with PIM by the first radio frequency (RF) coaxial connector 1
Analyzer 9 is connected, the other end of integration inner wire 5 by the second radio frequency (RF) coaxial connector 3 with
PIM analyser 9 is connected, and forms sky between integration inner wire 5 and the bottom surface of cavity parent 2
Air cavity 6, treats that the test sample opening through cavity parent 2 top is put in cavity parent 2, and to be measured
There is gap between the lower surface of sample and the upper surface of integrated inner wire 5 and be parallel to each other.
It should be noted that cavity is all fixed on by dielectric ring 4 in the two ends of integration inner wire 5
On the outer wall of parent 2；In one end of integration inner wire 5 and the first radio frequency (RF) coaxial connector 1
Outer conductor is connected, in the other end of integration inner wire 5 and the second radio frequency (RF) coaxial connector 3
Outer conductor is connected, wherein, integration inner wire 5 and the first radio frequency (RF) coaxial connector 1 in outside
The impedance between outer conductor in conductor and the second radio frequency (RF) coaxial connector 3 is 50 Ω；First penetrates
Frequently coaxial connector 1 and the second radio frequency (RF) coaxial connector 3 are 7/16 adapter；Base 7 is light
Learn base；Fixed support 8 is secured by bolts on base 7.
Treat to have between test sample with integrated inner wire 5 side of gap, test specimens and cavity parent 2
Between have gap, treat that test sample is fixed on the top of cavity parent 2 by dielectric rod or medium screw
Opening part, thus realize testing the passive intermodulation caused due to electromagnetic field couples under contactless state
Characteristic.
With reference to Fig. 4 and Fig. 5, treat that test sample constitutes the cavity cover plate of cavity parent 2, by opening PIM in real time
Analyser 9, successively treats difference that test sample is put in cavity parent 2, PIM analyser in test process
9 switch between calibration mode and test pattern, thus obtain the mutual tone pitch after real time calibration,
And with the mutual tone pitch after calibration for whether normal with reference to distinguishing test loop.
With reference to Fig. 6, by original dielectric rod being replaced by medium screw, and execute on medium screw
Add different torque measurings and obtain the mutual tone pitch change curve with torque, thus verify that contact interface connects
Touch pressure size has no effect on the coating contact intermodulation performance of sample to be tested.
With reference to Fig. 7, the present invention changes different test samples for the treatment of in real time by on-line testing method, thus
Immediately arrive at the mutual tone pitch comparative effectiveness figure under different coating, identical test condition, with Fig. 7
It is shown as example, it is seen that silver-plated, tin plating, electric conductive oxidation 3min, electric conductive oxidation 8min, its PIM value
It is ordered as: silver-plated < tin plating < the electric conductive oxidation 3min of electric conductive oxidation 8min.
Claims (6)
1. a coating material passive intermodulation online testing device based on dual mode transmission line structure,
It is characterized in that, lead including in fixed support (8), base (7), cavity parent (2), integration
Body (5), the first radio frequency (RF) coaxial connector (1), the second radio frequency (RF) coaxial connector (3) and PIM divide
Analyzer (9)；
Cavity parent (2) is fixed on base (7) by fixed support (8), cavity parent (2)
Before and after the equal opening in two sides and top, it is female that the two ends of integration inner wire (5) are each passed through cavity
The left and right sides of body (2), one end of integration inner wire (5) is connected by the first radio-frequency (RF) coaxial
Device (1) is connected with PIM analyser (9), and the other end of integration inner wire (5) is by the
Two radio frequency (RF) coaxial connectors (3) are connected with PIM analyser (9), integration inner wire (5)
And form air chamber (6) between the bottom surface of cavity parent (2), treat that test sample pushes up through cavity parent (2)
The opening in portion is put in cavity parent (2), and treats lower surface and integrated inner wire (5) of test sample
Upper surface between have gap and be parallel to each other.
Coating material based on dual mode transmission line structure the most according to claim 1 is passive mutually
Adjust online testing device, it is characterised in that dielectric ring is all passed through at the two ends of integration inner wire (5)
(4) it is fixed on the outer wall of cavity parent (2).
Coating material based on dual mode transmission line structure the most according to claim 1 is passive mutually
Adjust online testing device, it is characterised in that one end of integration inner wire (5) is same with the first radio frequency
Outer conductor in mandrel connector (1) is connected, and the other end and second of integration inner wire (5) is penetrated
Frequently the outer conductor in coaxial connector (3) is connected, wherein, and integration inner wire (5) and first
Outer conductor in radio frequency (RF) coaxial connector (1) and the outer conductor in the second radio frequency (RF) coaxial connector (3)
Between impedance be 50 Ω.
Coating material based on dual mode transmission line structure the most according to claim 1 is passive mutually
Adjust online testing device, it is characterised in that the first radio frequency (RF) coaxial connector (1) and the second radio frequency are same
Mandrel connector (3) is 7/16 adapter.
Coating material based on dual mode transmission line structure the most according to claim 1 is passive mutually
Adjust online testing device, it is characterised in that base (7) is optical mount.
Coating material based on dual mode transmission line structure the most according to claim 1 is passive mutually
Adjust online testing device, it is characterised in that fixed support (8) is secured by bolts in base (7)
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610279874.4A CN105891261B (en) | 2016-04-28 | 2016-04-28 | Coating material passive intermodulation online testing device based on dual mode transmission cable architecture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610279874.4A CN105891261B (en) | 2016-04-28 | 2016-04-28 | Coating material passive intermodulation online testing device based on dual mode transmission cable architecture |
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| CN105891261B CN105891261B (en) | 2018-09-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992798A (en) * | 2017-03-23 | 2017-07-28 | 西安交通大学 | Passive cross modulation test method based on gap waveguide near-field coupling |
| CN107302404A (en) * | 2017-07-05 | 2017-10-27 | 西安交通大学 | Near-field coupling passive cross modulation test device based on square coaxial configuration |
| CN105891261B (en) * | 2016-04-28 | 2018-09-04 | 西安交通大学 | Coating material passive intermodulation online testing device based on dual mode transmission cable architecture |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003030416A1 (en) * | 2001-10-01 | 2003-04-10 | Summitek Instruments, Inc. | Portable device used to measure passive intermodulation in radio frequency communication systems |
| CN101471736A (en) * | 2007-12-27 | 2009-07-01 | 奥雷通光通讯设备（上海）有限公司 | Passive cross modulation test system |
| CN101478700A (en) * | 2008-12-11 | 2009-07-08 | 杭州紫光网络技术有限公司 | Integrated passive intermodulation analyzer |
| CN202261311U (en) * | 2011-10-25 | 2012-05-30 | 杨斌 | Passive intermodulation test device for radio frequency (RF) device |
| US8629671B1 (en) * | 2011-05-20 | 2014-01-14 | Anritsu Company | Method and device for calibrating a passive intermodulation (PIM) measuring instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891261B (en) * | 2016-04-28 | 2018-09-04 | 西安交通大学 | Coating material passive intermodulation online testing device based on dual mode transmission cable architecture |
-
2016
- 2016-04-28 CN CN201610279874.4A patent/CN105891261B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003030416A1 (en) * | 2001-10-01 | 2003-04-10 | Summitek Instruments, Inc. | Portable device used to measure passive intermodulation in radio frequency communication systems |
| CN101471736A (en) * | 2007-12-27 | 2009-07-01 | 奥雷通光通讯设备（上海）有限公司 | Passive cross modulation test system |
| CN101478700A (en) * | 2008-12-11 | 2009-07-08 | 杭州紫光网络技术有限公司 | Integrated passive intermodulation analyzer |
| US8629671B1 (en) * | 2011-05-20 | 2014-01-14 | Anritsu Company | Method and device for calibrating a passive intermodulation (PIM) measuring instrument |
| CN202261311U (en) * | 2011-10-25 | 2012-05-30 | 杨斌 | Passive intermodulation test device for radio frequency (RF) device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891261B (en) * | 2016-04-28 | 2018-09-04 | 西安交通大学 | Coating material passive intermodulation online testing device based on dual mode transmission cable architecture |
| CN106992798A (en) * | 2017-03-23 | 2017-07-28 | 西安交通大学 | Passive cross modulation test method based on gap waveguide near-field coupling |
| CN106992798B (en) * | 2017-03-23 | 2020-03-17 | 西安交通大学 | Passive intermodulation test method based on slot waveguide near-field coupling |
| CN107302404A (en) * | 2017-07-05 | 2017-10-27 | 西安交通大学 | Near-field coupling passive cross modulation test device based on square coaxial configuration |
| CN107302404B (en) * | 2017-07-05 | 2020-07-28 | 西安交通大学 | Near-field coupling passive intermodulation test device based on square coaxial structure |
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| CN105891261B (en) | 2018-09-04 |
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