CN104005483A - Method for improving anechoic chamber silent area performance and modularization dielectric fences - Google Patents
Method for improving anechoic chamber silent area performance and modularization dielectric fences Download PDFInfo
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- CN104005483A CN104005483A CN201410189317.4A CN201410189317A CN104005483A CN 104005483 A CN104005483 A CN 104005483A CN 201410189317 A CN201410189317 A CN 201410189317A CN 104005483 A CN104005483 A CN 104005483A
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- modularization
- fence
- medium fence
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Abstract
The invention relates to the technical field of anechoic chamber external environment isolation transmission, in particular to a method for improving the anechoic chamber silent area performance and modularization dielectric fences. The method is characterized in that the modularization dielectric fences located in an anechoic chamber are formed by right-angle triangles and rectangular bases in a connected mode, the acute angles of the right-angle triangles range from 20 degrees to 30 degrees, the right-angle faces of the modularization dielectric fences face an electromagnetic radiant point, and the slant faces of the modularization dielectric fences face the center of a silent area; wave absorbing material layers are arranged on the slant faces of the right-angle triangles, and the vertical faces of the right-angle triangles and the vertical right-angle triangles of ground plane shielding bodies of the anechoic chamber are respectively provided with the wave absorbing material layers; the modularization dielectric fences are in a fixed or movable mode. The method for restraining anechoic chamber ground reflection or wall reflection through the multiple dielectric fences is adopted, the size of the anechoic chamber can be reduced, the construction cost of the anechoic chamber is directly reduced, and the anechoic chamber silent area performance is further improved.
Description
Technical field
The present invention relates to the ASCII stream of microwave dark room isolating exterior environment, relate in particular to a kind of for improving method and 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 be exactly for electromagnetic wave provide a proximate freedom space and with the communication environments of external isolation.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 guarantee that the normal angle that should as far as possible guarantee electromagnetism incidence wave and wall is less than 60 °.When 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, at the edge of electromagnetic radiation source array, just must cause title property.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of the present invention is to provide a kind of for improving method and the modularization medium fence of microwave dark room quiet zone performance.With the mirror-reflection on many medium fence inhibition ground, improve the quiet zone performance of microwave dark room.
For achieving the above object, the present invention 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 consists 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.
For improving a method for microwave dark room quiet zone performance, with many modularization medium fence, suppress the mirror-reflection on ground, improve the quiet zone performance of microwave dark room, its step is as follows:
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 a plurality of transmitting antennas on it; H
2p
2the height of point, H
2highly equal 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) on electromagnetism curtain wall, the height of transmitting antenna of least significant end is h
1, in order to suppress to be highly h
1to H
2mirror-reflection, radiation source is in height divided into a plurality of 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. first medium column location and height choose:
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 the distance of medium fence from wall, Y
1for the height of medium fence, L is darkroom length;
B. second medium column location and height choose:
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 the distance of medium fence from 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;
3) by above-mentioned formula (1) to (4), known, 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).
Owing to adopting technical scheme as above, the present invention has following superiority:
A kind of for improving method and the modularization medium fence of microwave dark room quiet zone performance, utilize multiple tracks medium fence to suppress the method for microwave dark room ground return or wall reflection, can reduce the size of microwave dark room, directly reduce the construction cost of microwave dark room, further improve the performance in darkroom.Or after microwave dark room size determines, further improve the performance in darkroom.
Accompanying drawing explanation
Figure l is the schematic diagram of microwave dark room internal mold blocking Dielectric hurdle to darkroom wall reflection;
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;
The specific embodiment
By reference to the accompanying drawings and embodiment, the present invention 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 consists 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 transparent light wood of electromagnetic wave or duroplasts are processed, on it, all over hanging absorbing material, between fence module, by bolt combination, be integral, can not do to connect with shielding floor.
According to the requirement of system, often make again dead zone depart from symmetrical centre how much at wide high both direction, in this case, install modularization medium fence scheme additional and there is quite significantly superiority.
For improving a method for microwave dark room quiet zone performance, with many modularization medium fence, suppress the mirror-reflection on ground, improve the quiet zone performance of microwave dark room, its step is as follows:
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 a plurality of transmitting antennas on it; H
2p
2the height of point, H
2highly equal 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) on electromagnetism curtain wall, the height of transmitting antenna of least significant end is h
1, in order to suppress to be highly h
1to H
2mirror-reflection, radiation source is in height divided into a plurality of 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. first medium column location and height choose:
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 the distance of medium fence from wall, Y
1for the height of medium fence, L is darkroom length;
B. second medium column location and height choose:
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 the distance of medium fence from 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;
3) by above-mentioned formula (1) to (4), known, 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 (7)
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 consists 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 parts 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.
7. modularization medium fence a kind of for improving the method for microwave dark room quiet zone performance as claimed in claim 1, is characterized in that: with many modularization medium fence, suppress the mirror-reflection on ground, improve the quiet zone performance of microwave dark room, its step is as follows:
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 a plurality of transmitting antennas on it; H
2p
2the height of point, H
2highly equal 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) on electromagnetism curtain wall, the height of transmitting antenna of least significant end is h
1, in order to suppress to be highly h
1to H
2mirror-reflection, radiation source is in height divided into a plurality of 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. first medium column location and height choose:
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 the distance of medium fence from wall, Y
1for the height of medium fence, L is darkroom length;
B. second medium column location and height choose:
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 the distance of medium fence from 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;
3) by above-mentioned formula (1) to (4), known, 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189317.4A CN104005483B (en) | 2014-05-07 | 2014-05-07 | A kind of method for improving microwave dark room quiet zone performance and modularity medium fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189317.4A CN104005483B (en) | 2014-05-07 | 2014-05-07 | A kind of method for improving microwave dark room quiet zone performance and modularity medium fence |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104005483A true CN104005483A (en) | 2014-08-27 |
| CN104005483B CN104005483B (en) | 2016-08-17 |
Family
ID=51366369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189317.4A Expired - Fee Related CN104005483B (en) | 2014-05-07 | 2014-05-07 | A kind of method for improving microwave dark room quiet zone performance and modularity medium fence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104005483B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597129A (en) * | 2017-01-12 | 2017-04-26 | 深圳市通用测试系统有限公司 | Microwave anechoic chamber |
| CN109669078A (en) * | 2018-12-11 | 2019-04-23 | 中国航空工业集团公司济南特种结构研究所 | A kind of microwave dark room with suction wave oncus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61292999A (en) * | 1985-06-21 | 1986-12-23 | 横浜ゴム株式会社 | Radio dark room |
| JPH06228920A (en) * | 1993-02-02 | 1994-08-16 | Fujita Corp | Soundproof wall equipped with radio wave reflection performance |
| JP2000353894A (en) * | 1999-06-11 | 2000-12-19 | Mitsubishi Electric Corp | Anechoic chamber and floor unit thereof |
| JP2009088107A (en) * | 2007-09-28 | 2009-04-23 | Toray Ind Inc | Radio wave absorber, its accommodating method, and radio wave dark room |
| CN202119806U (en) * | 2011-02-24 | 2012-01-18 | 南京南大波平电子信息有限公司 | Portable anechoic chamber |
| CN203905193U (en) * | 2014-05-07 | 2014-10-29 | 中国人民解放军63892部队 | Modularized medium barrier for improving quiet zone performance of anechoic chamber |
-
2014
- 2014-05-07 CN CN201410189317.4A patent/CN104005483B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61292999A (en) * | 1985-06-21 | 1986-12-23 | 横浜ゴム株式会社 | Radio dark room |
| JPH06228920A (en) * | 1993-02-02 | 1994-08-16 | Fujita Corp | Soundproof wall equipped with radio wave reflection performance |
| JP2000353894A (en) * | 1999-06-11 | 2000-12-19 | Mitsubishi Electric Corp | Anechoic chamber and floor unit thereof |
| JP2009088107A (en) * | 2007-09-28 | 2009-04-23 | Toray Ind Inc | Radio wave absorber, its accommodating method, and radio wave dark room |
| CN202119806U (en) * | 2011-02-24 | 2012-01-18 | 南京南大波平电子信息有限公司 | Portable anechoic chamber |
| CN203905193U (en) * | 2014-05-07 | 2014-10-29 | 中国人民解放军63892部队 | Modularized medium barrier for improving quiet zone performance of anechoic chamber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597129A (en) * | 2017-01-12 | 2017-04-26 | 深圳市通用测试系统有限公司 | Microwave anechoic chamber |
| CN106597129B (en) * | 2017-01-12 | 2024-02-02 | 深圳市通用测试系统有限公司 | Microwave darkroom |
| CN109669078A (en) * | 2018-12-11 | 2019-04-23 | 中国航空工业集团公司济南特种结构研究所 | A kind of microwave dark room with suction wave oncus |
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| Publication number | Publication date |
|---|---|
| CN104005483B (en) | 2016-08-17 |
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