CN106134438B - Radiant type passive cross modulation test is inhaled ripple cell with shielding - Google Patents
Radiant type passive cross modulation test is inhaled ripple cell with shieldingInfo
- Publication number
- CN106134438B CN106134438B CN200610056469.2A CN200610056469A CN106134438B CN 106134438 B CN106134438 B CN 106134438B CN 200610056469 A CN200610056469 A CN 200610056469A CN 106134438 B CN106134438 B CN 106134438B
- Authority
- CN
- China
- Prior art keywords
- shielding
- casing
- aluminium
- polyimides
- cross modulation
- 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.)
- Active
Links
- 230000000051 modifying Effects 0.000 title claims abstract description 24
- 229920000573 polyethylene Polymers 0.000 claims abstract description 18
- 239000004698 Polyethylene (PE) Substances 0.000 claims abstract description 17
- 229920001721 Polyimide Polymers 0.000 claims abstract description 17
- 239000004642 Polyimide Substances 0.000 claims abstract description 17
- 239000004411 aluminium Substances 0.000 claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000011358 absorbing material Substances 0.000 claims abstract description 8
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 239000002023 wood Substances 0.000 claims abstract description 6
- 235000004443 Ricinus communis Nutrition 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 11
- 206010022114 Injury Diseases 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 10
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009114 investigational therapy Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
Radiant type passive cross modulation test is inhaled ripple cell with shielding, main part is casing, on the sidewall of casing, open a cabinet door, bottom half is provided with castor, material selection plastics or the wood materials of casing and cabinet door, cabinet wall is pasted one side and is covered copper/aluminium polyimides/polyethylene as dielectric film, covers the absorbing material of pasting PIM value≤-170dBc on copper/aluminium polyimides/polyethylene dielectric film at one side. When test, the test specimens such as feed, reflector net or reflector, antenna are positioned over to shielding and inhale in ripple cell, both prevented microwave injury test personnel, prevent again extraneous noise jamming test result. The processing of this shielding suction ripple cell is simple, cost is low, functional.
Description
Technical field
The present invention relates to passive cross modulation test technology, particularly relate to the shielding of radiant type passive cross modulation test and inhaleRipple cell.
Background technology
Along with the development of satellite antenna technology, the application of high-power multicarrier satellite antenna payload more and moreExtensively. A key technology for high-power multicarrier transceiver common antenna is exactly passive cross modulation test technologyAnd the inhibition technology of interference to receiving system. Tenth Five-Year Plan Period, China Academy of Space Technology (Xi'an)Bear the development work of the netted deployable antenna performance prototype of the national two spaceborne uhf band 4.2m of generation military satelliteDo. One of key technology of this project be exactly passive intermodulation (PIM) to receive system interference inhibition technology andIts measuring technology. Here the patented product of application " radiant type passive cross modulation test is inhaled ripple cell with shielding " justBe component-level passive cross modulation test for completing the netted deployable antenna of uhf band transmit-receive sharing design speciallyUse non-standard equipment. It is the accurate equipment of special non-standard that radiant type passive cross modulation test system must be applied.
Learn by investigation, the domestic passive cross modulation test that does not have that unit to carry out satellite antenna, domesticDo not have ready-made complete passive cross modulation test equipment can supply buying yet. Therefore, according to signing with communication consultation head quaterThe contract of research project in advance, determine and develop voluntarily passive cross modulation test equipment.
In the time carrying out radiant type passive cross modulation test, also there is a shielding to inhale ripple cell abroad. But their shieldingSuction ripple cell all adopts aluminium alloy extrusions to do framework aluminium sheet and does wall, interior stickup absorbing material, for example CanadaThe shielding of EMS company is inhaled ripple cell and is adopted aluminium alloy development. Because aluminum alloy material surface always has one deckOxide layer, the connection of aluminium alloy and aluminium alloy can produce the structure of metal-oxide-metal, thereby causesThe generation of passive intermodulation. Therefore, the processing of metal cabinet adopts the method for welding and passes through meticulously before weldingGround cleans. This will cause time-consuming, take a lot of work and improve processing cost.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of radiant type passive mutuallyCommissioning shielding suction on probation ripple cell, solves the shielding suction ripple cell using in prior art and easily produces passive mutualTune, processing time consuming, take a lot of work and problem that processing cost is high.
Technical solution of the present invention is: radiant type passive cross modulation test is inhaled ripple cell, main part with shieldingDividing is casing, opens a cabinet door on the sidewall of casing, and bottom half is provided with castor, it is characterized in that:Material selection plastics or the wood materials of casing and cabinet door, cabinet wall is pasted one side and is covered copper/aluminium polyimides/ polyethylene, as dielectric film, covers on copper/aluminium polyimides/polyethylene dielectric film and pastes PIM value at one sideThe absorbing material of≤-170dBc.
Described casing adopts tenon structure to connect, and does not use metal connecting piece.
The present invention's advantage is compared with prior art:
(1) tank material adopt plastics or or wood materials, due to without any hardware, can not producePassive intermodulation problem.
(2) adopt the method that one side covers metal material dielectric film overlap joint to lay the shielding that shields suction ripple cellLayer. Can not form the Nonlinear Mechanism of metal-oxide-metal in lap-joint, therefore, eliminate generationThe source of passive intermodulation. Though have the dielectric layer of thin layer between two-layer Copper Foil, lap width is wider, because ofThis also can not produce the leakage of microwave. In fact, when metal-oxide-metal form nonlinear electric current/When voltage mechanism, the thickness of oxide existsNamely 0.004 μ m～0.1 μ m. ?Thick dielectric layer is by the conducting of blocking-up electric current, thus the generation of prevention passive intermodulation.
(3) casing adopts tenon structure to connect, and processes easyly, saving of labor, save time, and casing low processing cost;
(4) casing itself does not have PIM source, therefore in the time that the microwave signal of multi-path large power is irradiated, can not produceRaw passive intermodulation.
Brief description of the drawings
Fig. 1 is the block diagram of radiant type passive cross modulation test system;
Fig. 2 radiant type passive cross modulation test of the present invention is inhaled ripple cell structure schematic diagram with shielding.
Detailed description of the invention
As Fig. 1, the passive inter-modulation performance of test feed, reflecting surface or antenna need to adopt radiant type passive mutuallyCommissioning test system. Fig. 1 is the block diagram of radiant type passive cross modulation test system, when testing the passive mutual of feedTiming, two-way high-power signal is transmitted into space after by feed, at this moment must a shielding inhale ripple cellPowerful microwave is controlled in cell in case microwave injury test personnel. Meanwhile, shielding is inhaled ripple cell originallyBody can not produce passive intermodulation, accepts passage in order to avoid the passive intermodulation product that shielding suction ripple cell produces entersAffect test result. Therefore, ripple cell is inhaled in shielding should shield effectiveness, can not produce again passive intermodulation and produceThing.
As Fig. 2, radiant type passive cross modulation test of the present invention is inhaled ripple cell with shielding and is mainly comprised following parts:
Casing 1, is the main part that ripple cell is inhaled in whole shielding, and it can be true according to the size of measured pieceDetermine the size of casing. Casing 1 bottom is provided with castor 3, is convenient to mobile shielding and inhales ripple cell.A door left by casing, is convenient to lay testpieces in case, and cabinet door 2 is made embedded, cabinet door 2Closing the surface, innner and outer of rear box door 2 aligns with the inside and outside wall of casing 1. Wherein:
A. casing 1 material selection plastics or or wood materials, as engineering plastics or timber;
B. casing 1 adopts tenon structure to connect, and does not use any metal connecting piece;
C. the door of casing also adopt plastics or or wood materials processing;
Can guarantee that by tri-of above-mentioned a.b.c. casing 1 itself can not produce passive intermodulation problem.
Casing 1 inwall is pasted one side and is covered copper (or aluminium) polyimides (or polyethylene) film as microwaveScreen layer. On polyimides (or polyethylene) film, paste the suction ripple material of PIM value≤-170dBcMaterial.
Casing 1 can not produce passive intermodulation, and the passive intermodulation product that ripple cell is inhaled in shielding is mainly to inhale ripple materialMaterial produces, and controls the performance of absorbing material and has just controlled the performance that ripple cell is inhaled in shielding, so chooseAbsorbing material must pass through passive cross modulation test, performance meet PIM value≤-170dBc ability useInhale ripple cell in shielding.
Adopt one side to cover copper (or aluminium) polyimides (or polyethylene) film and can avoid occurring metal-oxygenThe structure of compound-metal. In the time that metal material contacts with metal material, contact position has oxide to exist just to go outThe structural form of existing metal-oxide-metal, when two or more carrier waves by or will produce while irradiatingPassive intermodulation.
In the time that casing 1 inwall stickup one side covers copper (or aluminium) polyimides (or polyethylene) film, twoOne side covers copper (or aluminium) polyimides (or polyethylene) film and adopts the method overlapping, in order to avoid leave gapCan leak microwave, when overlap joint, between metal level, have one deck Kapton avoid producing metal-oxide-The structure of metal, adopts all-purpose adhesive or other suitable gluing connecing. Kapton thickness should be not less than0.01mm. Cover Copper Foil and should be not less than 0.005mm. The doorframe of cabinet door and reveal face also will have one side to cover goldBelong to material medium film.
Can illuminating lamp 4 be set opening at casing 1 upper surface, opening part has the gold of PIM value≤-170dBcBelong to net as screen layer.
Specific embodiment of the invention step is:
(1), according to box sizes cutting plate, note reserving cabinet door. The about 20mm of casing wall thickness. In one sideSidewall upper shed, the hole of passing as test with cable or waveguide.
(2) adopt mortise and tenon assembling medium casing, can select suitable binding agent to glued joint. Door is made embedded,Align with the inside and outside wall of casing in the surface, innner and outer of door closing back door.
(3) cover copper (or aluminium) polyimides (or polyethylene) with all-purpose adhesive or other suitable gluing order facesFilm, polyimides (or polyethylene) film and cabinet wall are bonding. Two cover copper (or aluminium) polyamides AsiaAmine (or polyethylene) film seam crossing adopts overlap joint, lap width 20mm～30mm.
(4) paste absorbing material at wall and the top of casing, absorbing material is not pasted in bottom, when test, arrangesAfter good testpieces, put again absorbing material.
(5) cover copper (or aluminium) polyimides (or polyethylene) film at door frame of box and the stickup of reveal face, withExempt to leak from microwave crack between a door and its frame.
Claims (5)
1. radiant type passive cross modulation test is inhaled ripple cell with shielding, and main part is casing, casingSidewall on open a cabinet door, bottom half is provided with castor, it is characterized in that: casing andMaterial selection plastics or the wood materials of cabinet door, cabinet wall is pasted one side and is covered copper/aluminium polyimides/ polyethylene, as dielectric film, covers on copper/aluminium polyimides/polyethylene dielectric film and pastes at one sideThe absorbing material of PIM value≤-170dBc.
2. radiant type passive cross modulation test according to claim 1 is inhaled ripple cell with shielding,It is characterized in that: described casing adopts tenon structure to connect, and does not use metal connecting piece.
3. radiant type passive cross modulation test according to claim 1 is inhaled ripple cell with shielding,It is characterized in that: described one side covers copper/aluminium polyimides/polyethylene dielectric film and sticks on casingWhen inwall, two one sides cover copper/aluminium polyimides/polyethylene dielectric film seam crossing and adopt overlap jointMethod.
4. radiant type passive cross modulation test according to claim 1 is inhaled ripple cell with shielding,It is characterized in that: described cabinet door is made embedded, cabinet door is closed the innner and outer of rear box doorAlign with the inside and outside wall of casing in surface.
5. radiant type passive cross modulation test according to claim 1 is inhaled ripple cell with shielding,It is characterized in that: the doorframe of described cabinet door and reveal face have one side to cover copper/aluminium polyimides/poly-Ethene dielectric film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610056469.2A CN106134438B (en) | 2006-07-20 | Radiant type passive cross modulation test is inhaled ripple cell with shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610056469.2A CN106134438B (en) | 2006-07-20 | Radiant type passive cross modulation test is inhaled ripple cell with shielding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106134438C CN106134438C (en) | 2009-10-21 |
| CN106134438B true CN106134438B (en) | 2009-10-21 |
Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650031A (en) * | 2018-04-02 | 2018-10-12 | 北京航空航天大学 | A kind of weak passive cross modulation test system of microwave component based on cancellation techniques and method |
| CN113543614A (en) * | 2021-06-11 | 2021-10-22 | 西安空间无线电技术研究所 | Large passive intermodulation shielding darkroom |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650031A (en) * | 2018-04-02 | 2018-10-12 | 北京航空航天大学 | A kind of weak passive cross modulation test system of microwave component based on cancellation techniques and method |
| CN113543614A (en) * | 2021-06-11 | 2021-10-22 | 西安空间无线电技术研究所 | Large passive intermodulation shielding darkroom |
| CN113543614B (en) * | 2021-06-11 | 2022-10-21 | 西安空间无线电技术研究所 | Large passive intermodulation shielding darkroom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DC01 | Secret patent status has been lifted |