CN203905193U - Modularized medium barrier for improving quiet zone performance of anechoic chamber - Google Patents
Modularized medium barrier for improving quiet zone performance of anechoic chamber Download PDFInfo
- Publication number
- CN203905193U CN203905193U CN201420229699.4U CN201420229699U CN203905193U CN 203905193 U CN203905193 U CN 203905193U CN 201420229699 U CN201420229699 U CN 201420229699U CN 203905193 U CN203905193 U CN 203905193U
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- China
- Prior art keywords
- absorbing material
- medium fence
- fence
- dark room
- quiet zone
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Abstract
The utility model relates to the technical field of transmission of an anechoic chamber isolated from external environment, in particular to a modularized medium barrier for improving the quiet zone performance of the anechoic chamber. The modularized medium barrier in the anechoic chamber is formed by connecting a right-angled triangular body and a rectangular base; the acute angle of the right-angled triangular body ranges from 20 to 30 degrees; the right-angle surface of the modularized medium barrier faces an electromagnetic radiation source; the inclined surface of the modularized medium barrier faces a quiet zone center; a wave-absorbing material layer is arranged on the inclined surface of the right-angled triangular body; wave-absorbing material layers are respectively arranged on the vertical surface of the right-angled triangular body and the right-angle surface, which is perpendicular to an anechoic chamber ground-plane shielding body, of the right-angled triangular body; the modularized medium barrier is fixed or movable. The modularized medium barrier provided by the utility model can restrain the ground reflection or wall reflection of the anechoic chamber, can reduce the size of the anechoic chamber and directly reduce the construction cost of the anechoic chamber, and further improve the quiet zone performance of the anechoic chamber.
Description
Technical field
The utility model relates to the ASCII stream of microwave dark room isolating exterior environment, relates in particular to a kind of for improving the modularization medium fence of microwave dark room quiet zone performance.
Background technology
Microwave dark room is widely used in many fields such as antenna, target RCS feature measurement, electromagnetic compatibility test and electronics l-G simulation test.Its most basic function is exactly to provide a proximate freedom space and the communication environments with external isolation for electromagnetic wave.Microwave dark room size design is generally deferred to following principle: the length in darkroom must meet have go-no-go size antenna by the test demand of seal test equipment.Restrictive condition is far field range formula, R≤K (D
1+ D
2)/2 λ.The lateral dimension in darkroom should be able to ensure that the normal angle that should as far as possible ensure electromagnetism incidence wave and wall is less than 60 °.In the time that electromagnetic wave angle of incidence is greater than 60 °, the performance of absorbing material sharply declines, and the mirror-reflection of wall sharply increases, the obvious variation of Xing district, darkroom performance.
As shown in Figure 1, when center, dead zone 4 or electromagnetic radiation source 3 positions are when asymmetric, electromagnetic wave angle of incidence increases, if angle of incidence α is greater than 60 °, the performance of absorbing material sharply declines, have a strong impact on dead zone reflective level index, and then affect the precision of antenna measurement or l-G simulation test, must take certain measure.The electromagnetic radiation source 3 of analogue system is to distribute within the scope of certain solid angle, just must cause at the edge of electromagnetic radiation source array title property.
Summary of the invention
For overcoming the deficiencies in the prior art, it is a kind of for improving the modularization medium fence of microwave dark room quiet zone performance that the purpose of this utility model is to provide.Suppress the mirror-reflection on ground with many medium fence, improve the quiet zone performance of microwave dark room.
For achieving the above object, the utility model adopts following technical scheme:
A kind of for improving the modularization medium fence of microwave dark room quiet zone performance, the modularization medium fence 2 that is positioned at microwave dark room 1 is connected and composed by right angle trigonometry body and rectangular susceptor 2.2, the acute angle of right angle trigonometry body is 20-30 °, the right angle of described modularization medium fence 2 is facing to curtain wall 5, and the inclined-plane of modularization medium fence 2 is towards center, dead zone 4; And the inclined-plane of right angle trigonometry body is provided with absorbing material layer 2.1, on the vertical plane of the right angle trigonometry body right angle face vertical with microwave dark room ground line shield, be respectively arranged with absorbing material layer 2.1; Described modularization medium fence 2 is fixed or portable.
For improving a modularization medium fence for microwave dark room quiet zone performance, sharp structure is arranged at the top 2.3 of described modularization medium fence 2, and sharp structure is made up of absorbing material.
For improving a modularization medium fence for microwave dark room quiet zone performance, the absorbing material that the bight, darkroom 2.4 of the bottom of described modularization medium fence 2 and darkroom shield joint arranges is the plate shaped organic polymer resin type of individual layer absorbing material.
For improving a modularization medium fence for microwave dark room quiet zone performance, the absorbing material piece at described modularization medium fence 2 middle parts is wedge shape polyurethane foam type absorbing material.
For improving a modularization medium fence for microwave dark room quiet zone performance, described absorbing material piece is laid and is connected and composed by the some absorbing materials that are of a size of 0.61m × 0.61m.
For improving a modularization medium fence for microwave dark room quiet zone performance, the structure of described modularization medium fence 2 for the transparent light wood of electromagnetic wave or duroplasts are made, hangs absorbing material on modularization medium fence 2.
Owing to adopting technical scheme as above, the utlity model has following superiority:
For improving a modularization medium fence for microwave dark room quiet zone performance, can suppress reflection or the wall reflection on microwave dark room ground, can reduce the size of microwave dark room, directly reduce the construction cost of microwave dark room, further improve the performance in darkroom.Or microwave dark room size determine after, further improve the performance in darkroom.
Brief description of the drawings
Figure l is the schematic diagram of darkroom wall reflection in microwave dark room;
Fig. 2 is the schematic layout pattern of modularization medium fence in microwave dark room;
Fig. 3 is the planform schematic diagram of modularization medium fence;
Fig. 4 is the partial structurtes enlarged diagram of Fig. 3 modularization medium fence;
Detailed description of the invention
By reference to the accompanying drawings and embodiment, the utility model is further elaborated.
As shown in Figure 1, 2, 3, a kind of for improving the modularization medium fence of microwave dark room quiet zone performance, it is characterized in that: the modularization medium fence 2 that is positioned at microwave dark room 1 is connected and composed by right angle trigonometry body and rectangular susceptor 2.2, the acute angle of right angle trigonometry body is 20-30 °, the right angle of described modularization medium fence 2 is facing to curtain wall 5, and the inclined-plane of modularization medium fence 2 is towards center, dead zone 4; And the inclined-plane of right angle trigonometry body is provided with absorbing material layer 2.1, on the vertical plane of the right angle trigonometry body right angle face vertical with microwave dark room ground line shield, be respectively arranged with absorbing material layer 2.1.
Shape and the making of described modularization medium fence 2, modularization medium fence 2 can be made into fixed or packaged type, and while making packaged type, the size of each module should facilitate manpower to move.
Sharp structure is arranged at the top 2.3 of described modularization medium fence 2, and sharp structure is made up of absorbing material.The absorbing material that the bight, darkroom 2.4 of the bottom of described modularization medium fence 2 and darkroom shield joint arranges is the plate shaped organic polymer resin type of individual layer absorbing material.The absorbing material piece at described modularization medium fence 2 middle parts is wedge shape polyurethane foam type absorbing material.
Described absorbing material piece is laid and is connected and composed by the some absorbing materials that are of a size of 0.61m × 0.61m.
The structure of described modularization medium fence 2 for the transparent light wood of electromagnetic wave or duroplasts are made, hangs absorbing material on modularization medium fence 2.Adopt the light wood transparent to electromagnetic wave or duroplasts to process, all over hanging absorbing material, integral by bolt combination between fence module on it, can not do to connect with shielding floor.
Often make again dead zone depart from symmetrical centre how much at wide high both direction according to the requirement of system, in this case, install modularization medium fence scheme additional and there is quite significantly superiority.
Adopt the mirror-reflection on many modularization medium fence inhibition ground, improve the quiet zone performance of microwave dark room, the making of modularization medium fence 2:
1) installation site of medium fence and highly selection,
A. establish P
1point is center, microwave dark room dead zone 4, and the height of reception antenna is H
1, P
2point is the center of the wall on opposite, and wall is electromagnetism curtain wall 5, is distributed with multiple transmitting antennas on it; H
2p
2the height of point, H
2highly equal the half of darkroom height;
B. the rule of ELECTROMAGNETIC REFLECTION is larger on the impact of quiet zone performance the closer to the radiation source on ground, is highly H
2the ELECTROMAGNETIC REFLECTION that above transmitting antenna produces is negligible;
2) when the height of transmitting antenna of least significant end on electromagnetism curtain wall is h
1, in order to suppress to be highly h
1to H
2mirror-reflection, radiation source is in height divided into multiple bands, be respectively: (h
2-h
1), (h
3-h
2), (h
4-h
3) The ground return that the radiation source of each band causes suppresses with several medium fence respectively;
A. choosing of first medium column location and height:
X
1＝Lh
2/(h
2+H
1) (1)
Y
1＝H
1(h
2-h
1)/(h
2+H
1) (2)
Wherein: X
1for medium fence is from the distance of wall, Y
1for the height of medium fence, L is darkroom length;
B. choosing of second medium column location and height:
X
2＝Lh
3/(h
3+H
1) (3)
Y
2＝H
1(h
3-h
2)/(h
3+H
1) (4)
Wherein: X
2for medium fence is from the distance of wall, Y
2for the height of medium fence, L is darkroom length;
C. the distance of other each road fence and height, by step a.b the like;
3) known by above-mentioned formula (1) to (4), the width of band and medium fence height correlation, band is wider, medium fence is also just higher, in use, need medium fence to carry and put, generally adopt≤1.5m of medium fence height in engineering, determining of strip width calculated by formula (2), formula (4).
Claims (6)
1. one kind for improving the modularization medium fence of microwave dark room quiet zone performance, it is characterized in that: the modularization medium fence (2) that is positioned at microwave dark room (1) is connected and composed by right angle trigonometry body and rectangular susceptor (2.2), the acute angle of right angle trigonometry body is 20-30 °, the right angle of described modularization medium fence (2) is facing to curtain wall (5), and the inclined-plane of modularization medium fence (2) is towards center, dead zone (4); And the inclined-plane of right angle trigonometry body is provided with absorbing material layer (2.1), on the vertical plane of the right angle trigonometry body right angle face vertical with microwave dark room ground line shield, be respectively arranged with absorbing material layer (2.1); Described modularization medium fence (2) is fixed or portable.
2. according to claim 1 a kind of for improving the modularization medium fence of microwave dark room quiet zone performance, it is characterized in that: sharp structure is arranged at the top (2.3) of described modularization medium fence (2), and sharp structure is made up of absorbing material.
3. according to claim 1 a kind of for improving the modularization medium fence of microwave dark room quiet zone performance, it is characterized in that: the absorbing material that the bight, darkroom (2.4) of the bottom of described modularization medium fence (2) and darkroom shield joint arranges is the plate shaped organic polymer resin type of individual layer absorbing material.
4. according to claim 1 a kind of for improving the modularization medium fence of microwave dark room quiet zone performance, it is characterized in that: the absorbing material piece at described modularization medium fence (2) middle part is wedge shape polyurethane foam type absorbing material.
5. according to claim 1 a kind of for improving the modularization medium fence of microwave dark room quiet zone performance, it is characterized in that: described absorbing material piece is laid and connected and composed by the some absorbing materials that are of a size of 0.61m × 0.61m.
6. according to claim 1 a kind of for improving the modularization medium fence of microwave dark room quiet zone performance, it is characterized in that: the structure of described modularization medium fence (2) for the transparent light wood of electromagnetic wave or duroplasts are made, hangs absorbing material on modularization medium fence (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420229699.4U CN203905193U (en) | 2014-05-07 | 2014-05-07 | Modularized medium barrier for improving quiet zone performance of anechoic chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420229699.4U CN203905193U (en) | 2014-05-07 | 2014-05-07 | Modularized medium barrier for improving quiet zone performance of anechoic chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203905193U true CN203905193U (en) | 2014-10-29 |
Family
ID=51779482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420229699.4U Expired - Fee Related CN203905193U (en) | 2014-05-07 | 2014-05-07 | Modularized medium barrier for improving quiet zone performance of anechoic chamber |
Country Status (1)
| Country | Link |
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| CN (1) | CN203905193U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005483A (en) * | 2014-05-07 | 2014-08-27 | 中国人民解放军63892部队 | Method for improving anechoic chamber silent area performance and modularization dielectric fences |
-
2014
- 2014-05-07 CN CN201420229699.4U patent/CN203905193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005483A (en) * | 2014-05-07 | 2014-08-27 | 中国人民解放军63892部队 | Method for improving anechoic chamber silent area performance and modularization dielectric fences |
| CN104005483B (en) * | 2014-05-07 | 2016-08-17 | 中国人民解放军63892部队 | A kind of method for improving microwave dark room quiet zone performance and modularity medium fence |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20150507 |
|
| EXPY | Termination of patent right or utility model |