CN104237575B - A kind of coaxial holder of test material electromagnetic property - Google Patents
A kind of coaxial holder of test material electromagnetic property Download PDFInfo
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- CN104237575B CN104237575B CN201410535218.7A CN201410535218A CN104237575B CN 104237575 B CN104237575 B CN 104237575B CN 201410535218 A CN201410535218 A CN 201410535218A CN 104237575 B CN104237575 B CN 104237575B
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Abstract
The present invention discloses a kind of coaxial holder of test material electromagnetic property, for measuring Materials ' Shielding Effectiveness, complex dielectric permittivity and complex permeability, including Supporting Media, inner wire part and outer conductor part, inner wire part includes inner wire bore transition, inner wire equal-diameter part and the isometrical prolongation of inner wire, outer conductor part includes outer conductor bore transition, outer conductor equal-diameter part and the isometrical prolongation of outer conductor, wherein the outer surface of inner wire part and outer conductor part inner surface in the axial direction any point with intersect perpendicular to the plane of axial direction obtained by curve for two concentric circles, the characteristic impedance of the coaxial configuration being made up of the two concentric circles is steady state value.When not connecing inside and outside isometrical prolongation assembling, the fixture is suitable for measuring the shield effectiveness of material, connects inside and outside isometrical the prolongation then complex dielectric permittivity of measurable material and complex permeability.
Description
Art
The present invention relates to a kind of coaxial holder of test material electromagnetic property, and in particular to a kind of can be with the screen of test material
Cover the coaxial holder of multiple electromagnetic parameters such as efficiency, complex dielectric permittivity and complex permeability.
Background technology
The fixture of general test Materials ' Shielding Effectiveness is coaxial configuration, because the electromagnetic wave that propagates in coaxial configuration is horizontal stroke
Electromagnetic wave, this are consistent with the electromagnetic wave that propagates in free space.This coaxial holder is by relative two standard sets coaxial fitting, interior
Outer conductor bore transition is constituted with internal and external conductor equal-diameter part, although internal and external conductor bore gradual change, but its characteristic impedance exists
Diverse location be constant, internal and external conductor by between Supporting Media fix, two outer conductor equal-diameter part are connected by ring flange
Connect, detected materials are positioned between two ring flanges, in order to mitigate weight and size, the axial distance of its equal-diameter part is shorter,
Be not suitable for complex dielectric permittivity and the complex permeability using transmission/reflection method for measuring material.And it is general for measuring answering for material
The coaxial holder of dielectric constant and complex permeability is due to using threaded, being also not suitable for measuring the shield effectiveness of material.
Content of the invention
In order that coaxial holder can test material shield effectiveness, it is also possible to test complex dielectric permittivity and complex permeability.
The technical solution adopted for the present invention to solve the technical problems is：A kind of coaxial holder of test material electromagnetic property, including outer
Conductor, inner wire and two Supporting Medias, the outer conductor inner hollow are simultaneously coaxially fixed on outside inner wire by Supporting Media,
Any point intersects gained with the plane perpendicular to axial direction to the inner surface of the outer surface of the inner wire and outer conductor in the axial direction
Curve be two concentric circles, the characteristic impedance of the coaxial configuration being made up of the two concentric circles is steady state value；The inner wire
Including the isometrical prolongation of inner wire and symmetrically arranged two inner wire equal-diameter part, the outer conductor includes two ends band method
The isometrical prolongation of outer conductor of blue disk and two outer conductor equal-diameter part of the flanged disk in symmetrically arranged one end, test material
Shielding properties when, two inner wire equal-diameter part are connected with two inner wire plugs respectively, two outer conductor equal-diameter part it
Between connected by ring flange, when the complex dielectric permittivity of test material and complex permeability, the isometrical prolongation two ends of inner wire and two
Individual inner wire equal-diameter part connection, the isometrical prolongation two ends of outer conductor are connected with two outer conductor equal-diameter part.
When the shielding properties of test material,
Between described two outer conductor equal-diameter part ring flanges and place shield effectiveness between two inner wire plugs to treat
Measure and monitor the growth of standing timber and expect control sample or shield effectiveness detected materials sample；
The shield effectiveness detected materials control sample includes flange portions and inner conductor portion；
The shield effectiveness detected materials control sample flange portions are connected to two outer conductors by screw and nut
Between equal-diameter part ring flange；
The shield effectiveness detected materials control sample inner conductor portion is clipped between two inner wire plugs；
The shield effectiveness detected materials sample is connected to two outer conductor equal-diameter part ring flanges by screw and nut
Between；
When complex dielectric permittivity and the complex permeability of test material, the isometrical prolongation outer surface of the inner wire and lead outward
Complex dielectric permittivity and complex permeability detected materials sample is placed between the isometrical prolongation inner surface of body；
The inner wire includes symmetrically arranged two inner wire bore transition and two inner wire connectors；Institute
The heavy caliber end for stating inner wire bore transition is connected by screw thread with inner wire equal-diameter part and fixes Supporting Media；
The outer conductor includes symmetrically arranged two outer conductors bore transition, the outer conductor bore transition
Heavy caliber end be connected by screw thread with outer conductor equal-diameter part and be enclosed within inner wire bore transition, Supporting Media and interior lead
Outside body equal-diameter part, while fixing Supporting Media, and then the position of fixing internal and external conductor；
Inner wire connector one end by the way of patch is connected with inner wire equal-diameter part, the other end and inner wire
Isometrical prolongation connection.
Coaxial configuration that the small-caliber end of the outer conductor bore transition and inner wire bore transition is constituted and
The coaxial fitting of standard is connected；
Fixed by screw and nut between the ring flange.
Beneficial effect：
Present configuration is simple, is easy to operation, and when not connecing inside and outside isometrical prolongation assembling, the fixture is suitable for measurement material
The shield effectiveness of material, connects inside and outside isometrical the prolongation then complex dielectric permittivity of measurable material and complex permeability.
Description of the drawings
Fig. 1 is the perspective view of all parts in the present invention
Fig. 2 is the assembling exploded view (repeating part not drawing) when testing for shield effectiveness in the present invention.
Fig. 3 is that the assembling exploded view that tests for complex dielectric permittivity and complex permeability in the present invention (repeats part not painting
System).
Fig. 4 is that assembling when testing for shield effectiveness in the present invention completes figure.
Fig. 5 is that the assembling that tests for complex dielectric permittivity and complex permeability in the present invention completes figure.
Fig. 6 is control sample when testing for shield effectiveness in the present invention, including flange portions and inner conductor portion.
Fig. 7 is sample when testing for shield effectiveness in the present invention.
Fig. 8 is control sample scheme of installation when testing for shield effectiveness in the present invention.
Fig. 9 is sample scheme of installation when testing for shield effectiveness in the present invention.
Figure 10 is detected materials structural representation when testing for complex dielectric permittivity and complex permeability in the present invention
Figure 11 is sample scheme of installation when testing for complex dielectric permittivity and complex permeability in the present invention.
In accompanying drawing：
1st, outer conductor bore transition；2nd, outer conductor equal-diameter part；3rd, the isometrical prolongation of outer conductor；4th, inner wire mouth
Footpath transition；5th, Supporting Media；6th, inner wire equal-diameter part；7th, inner wire plug；8th, inner wire connector；9th, inner wire etc.
Footpath prolongation；10th, screw；11st, nut；12nd, shield effectiveness detected materials control sample flange portions；13rd, shield effectiveness
Detected materials control sample inner conductor portion；14th, shield effectiveness detected materials sample；15th, complex dielectric permittivity and complex permeability are treated
Measure and monitor the growth of standing timber material samples
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings：
Embodiment 1
As shown in figure 1, a kind of coaxial holder of test material electromagnetic property, including outer conductor bore transition 1, is led outward
Body equal-diameter part 2, inner wire bore transition 4, Supporting Media 5, inner wire equal-diameter part 6, the wherein gradual change of inner wire bore
The heavy caliber end of part 4 is connected by screw thread with inner wire equal-diameter part 6 and fixes Supporting Media 5, outer conductor bore gradual change portion
Divide 1 heavy caliber end to be connected by screw thread with outer conductor equal-diameter part 2 and be enclosed within inner wire bore transition 4, Supporting Media 5
Outside inner wire equal-diameter part 6, while fixing Supporting Media 5, and then the position of fixing internal and external conductor, outer conductor bore gradual change portion
Divide 1 coaxial configuration constituted with the small-caliber end of inner wire bore transition 4 be connected with the coaxial fitting of standard.
Fig. 2 and embodiment illustrated in fig. 4 are used for the shield effectiveness of test material, and the other end of outer conductor equal-diameter part 2 is method
Blue disk, the other end of inner wire equal-diameter part 6 are connected for opening and with inner wire plug 7, two groups of bore transition of identical,
Supporting Media and equal-diameter part are fixed by the ring flange of outer conductor equal-diameter part 2, screw 10 and nut 11, and two inner wires are blocked up
7 directly mutually press.Fig. 8 and Fig. 9 give the concrete grammar schematic diagram of the shield effectiveness of test material, and detected materials are according to Fig. 6
Shape make control sample, including shield effectiveness detected materials control sample flange portions 12 and shield effectiveness detected materials
Control sample inner conductor portion 13, places according to shown in Fig. 8, and measurement obtains through-put power, the shield effectiveness that will be made according to Fig. 7
Detected materials sample 14 is placed according to shown in Fig. 9, and measurement obtains another group of through-put power, measures, by this, the power for obtaining twice
Shield effectiveness can just be calculated.
Embodiment 2
As shown in figure 1, a kind of coaxial holder of test material electromagnetic property, including outer conductor bore transition 1, is led outward
Body equal-diameter part 2, inner wire bore transition 4, Supporting Media 5, inner wire equal-diameter part 6, the wherein gradual change of inner wire bore
The heavy caliber end of part 4 is connected by screw thread with inner wire equal-diameter part 6 and fixes Supporting Media 5, outer conductor bore gradual change portion
Divide 1 heavy caliber end to be connected by screw thread with outer conductor equal-diameter part 2 and be enclosed within inner wire bore transition 4, Supporting Media
5 and inner wire equal-diameter part 6 outside, while fixing Supporting Media 5, and then the position of fixing internal and external conductor, outer conductor bore gradual change
The coaxial configuration that part 1 is constituted with the small-caliber end of inner wire bore transition 4 can be connected with the coaxial fitting of standard.
Fig. 3 and embodiment illustrated in fig. 5 are used for complex dielectric permittivity and the complex permeability of test material, outer conductor equal-diameter part 2
It is connected by ring flange, screw 10 and nut 11 with the isometrical prolongation 3 of outer conductor, inner wire equal-diameter part 6 passes through inner wire
Connector 8 is connected by the way of grafting with the isometrical prolongation 9 of inner wire, so as to ensure inner wire coupling part outer surface
Continuously.Figure 11 gives the example of test material complex dielectric permittivity and complex permeability, the complex dielectric permittivity that will prepare according to Figure 10
With complex permeability detected materials sample 15 according to being positioned in coaxial holder 9 outer surface of inner wire prolongation and outer shown in Figure 11
Between isometrical 3 inner surface of prolongation of conductor, then according to transmission/bounce technique can just calculate sample complex dielectric permittivity and
Complex permeability.
Claims (10)
1. a kind of coaxial holder of test material electromagnetic property, including outer conductor, inner wire and two Supporting Medias (5), which is special
Levy and be, the outer conductor inner hollow is simultaneously coaxially fixed on outside inner wire by Supporting Media (5), the appearance of the inner wire
Any point is concentric for two with the curve for intersecting gained perpendicular to axial plane in the axial direction for the inner surface of face and outer conductor
Circle, the characteristic impedance of the coaxial configuration being made up of the two concentric circles is steady state value；The inner wire includes that inner wire is isometrical and prolongs
Long part (9) and symmetrically arranged two inner wire equal-diameter part (6)；The outer conductor includes outer the leading of the flanged disk in two ends
Two outer conductor equal-diameter part (2) of the flanged disk of the isometrical prolongation of body (3) and symmetrically arranged one end；The screen of test material
When covering performance, two inner wire equal-diameter part (6) are connected with two inner wire plugs (7) respectively, two outer conductor equal-diameter part
(2) connected by ring flange between；When the complex dielectric permittivity and complex permeability of test material, the isometrical prolongation of inner wire (9)
Two ends are connected with two inner wire equal-diameter part (6), outer conductor isometrical prolongation (3) two ends and two outer conductor equal-diameter part
(2) connect.
2. the coaxial holder of a kind of test material electromagnetic property according to claim 1, it is characterised in that work as test material
Shielding properties when, place between described two outer conductor equal-diameter part (2) ring flange and between two inner wire plugs (7)
Shield effectiveness detected materials control sample or shield effectiveness detected materials sample (14).
3. the coaxial holder of a kind of test material electromagnetic property according to claim 1, it is characterised in that work as test material
Complex dielectric permittivity and during complex permeability, isometrical prolongation (9) outer surface of the inner wire and the isometrical prolongation of outer conductor
(3) complex dielectric permittivity and complex permeability detected materials sample (15) are placed between inner surface.
4. according to a kind of coaxial holder of the arbitrary described test material electromagnetic property of claim 1-3, it is characterised in that described
Inner wire includes symmetrically arranged two inner wires bore transition (4) and two inner wire connectors (8)；Described interior lead
The heavy caliber end of body bore transition (4) is connected by screw thread with inner wire equal-diameter part (6) and fixes Supporting Media (5).
5. a kind of coaxial holder of test material electromagnetic property according to claim 4, it is characterised in that the outer conductor
Including symmetrically arranged two outer conductors bore transition (1), the heavy caliber end of outer conductor bore transition (1) with
Outer conductor equal-diameter part (2) is connected by screw thread and is enclosed within inner wire bore transition (4), Supporting Media (5) and inner wire
Equal-diameter part (6) outward, while fixing Supporting Media (5), and then fixes the position of internal and external conductor.
6. a kind of coaxial holder of test material electromagnetic property according to claim 4, it is characterised in that the inner wire
Connector (8) one end by the way of patch is connected with inner wire equal-diameter part (6), the other end and the isometrical prolongation of inner wire
(9) connect.
7. a kind of coaxial holder of test material electromagnetic property according to claim 2, it is characterised in that the shielding effect
Can detected materials sample (14) by screw (10) and nut (11) be connected to two outer conductor equal-diameter part (2) ring flanges it
Between.
8. a kind of coaxial holder of test material electromagnetic property according to claim 2, it is characterised in that the shielding effect
Energy detected materials control sample includes flange portions (12) and inner conductor portion (13).
9. a kind of coaxial holder of test material electromagnetic property according to claim 8, it is characterised in that the shielding effect
Can detected materials control sample flange portions (12) the isometrical portion of two outer conductors is connected to by screw (10) and nut (11)
Divide between (2) ring flange.
10. a kind of coaxial holder of test material electromagnetic property according to claim 8, it is characterised in that the shielding
Efficiency detected materials control sample inner conductor portion (13) is clipped between two inner wire plugs (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535218.7A CN104237575B (en) | 2014-10-10 | 2014-10-10 | A kind of coaxial holder of test material electromagnetic property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535218.7A CN104237575B (en) | 2014-10-10 | 2014-10-10 | A kind of coaxial holder of test material electromagnetic property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104237575A CN104237575A (en) | 2014-12-24 |
| CN104237575B true CN104237575B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410535218.7A Active CN104237575B (en) | 2014-10-10 | 2014-10-10 | A kind of coaxial holder of test material electromagnetic property |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645811A (en) * | 2016-10-09 | 2017-05-10 | 周峰 | direct current test transmission device |
| CN108318746A (en) * | 2018-04-10 | 2018-07-24 | 四川聚强创新科技有限公司 | A kind of VHF frequency ranges complex dielectric constant measuring apparatus |
| CN108508242B (en) * | 2018-07-03 | 2024-02-09 | 中国人民解放军61489部队 | Flange coaxial device for testing shielding effectiveness of material |
| CN110058056B (en) * | 2018-12-20 | 2021-09-14 | 中国科学院高能物理研究所 | Non-standard test fixture |
Citations (4)
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| US5061899A (en) * | 1989-02-23 | 1991-10-29 | Mitsubishi Cable Industries Ltd. | Transfer impedance testing fixture for electromagnetic wave shielding material |
| CN101149417A (en) * | 2007-11-14 | 2008-03-26 | 中国林业科学研究院木材工业研究所 | Screen performance test method for veneer with built-in electromagnetic layer |
| CN103926426A (en) * | 2013-01-14 | 2014-07-16 | 中国人民解放军军械工程学院 | Broadband continuous-conductor coaxial fixture for material shielding effectiveness testing |
| CN203772976U (en) * | 2013-12-24 | 2014-08-13 | 上海市计量测试技术研究院 | Flange coaxial testing device for shielding effectiveness of planar electromagnetic shielding material |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5061899A (en) * | 1989-02-23 | 1991-10-29 | Mitsubishi Cable Industries Ltd. | Transfer impedance testing fixture for electromagnetic wave shielding material |
| CN101149417A (en) * | 2007-11-14 | 2008-03-26 | 中国林业科学研究院木材工业研究所 | Screen performance test method for veneer with built-in electromagnetic layer |
| CN103926426A (en) * | 2013-01-14 | 2014-07-16 | 中国人民解放军军械工程学院 | Broadband continuous-conductor coaxial fixture for material shielding effectiveness testing |
| CN203772976U (en) * | 2013-12-24 | 2014-08-13 | 上海市计量测试技术研究院 | Flange coaxial testing device for shielding effectiveness of planar electromagnetic shielding material |
Non-Patent Citations (3)
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| SE同轴测试装置中阶梯电容的研究与优化;陈超婵等;《中国计量学院学报》;20100630;第21卷(第02期);第99-103页 * |
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| CN104237575A (en) | 2014-12-24 |
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