CN102637953A - Frequency-selection-surface invisible radome with dielectric medium truss structure - Google Patents
Frequency-selection-surface invisible radome with dielectric medium truss structure Download PDFInfo
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- CN102637953A CN102637953A CN2012101370280A CN201210137028A CN102637953A CN 102637953 A CN102637953 A CN 102637953A CN 2012101370280 A CN2012101370280 A CN 2012101370280A CN 201210137028 A CN201210137028 A CN 201210137028A CN 102637953 A CN102637953 A CN 102637953A
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Abstract
The invention discloses a frequency-selection-surface invisible radome with a dielectric medium truss structure and belongs to the technical field of modern weapons. The radome takes a dielectric medium truss as a skeleton network to support an FSS (frequency Selective Surface) flexible screen so as to realize a stable filtering characteristic and further improve the invisibility and reliability of the FSS radome. The radome comprises a radome base, the dielectric medium truss, a flexible base and the FSS screen; the radome is of a closed structure and sequentially comprises the radome base, the dielectric medium truss, the flexible base and the FSS screen from the outermost layer to the innermost layer; and the radome base, the dielectric medium truss, the flexible base and the FSS screen are connected with adjacent parts. According to the invention, the ideal filtering characteristic of the FSS radome which utilizes air as a matching medium can be realized, the stable passband of electromagnetic waves which are incident with large angels and in different polarization ways can be maintained, and detection radar waves emitted by an enemy can be reflected to other directions so as to reduce echo signals, thereby realizing the aim of invisibility of a radar.
Description
Technical field
The invention belongs to the modern weapons technical field, be specifically related to a kind of dielectric truss structure frequency-selective surfaces stealth radar cover.
Background technology
Along with the development of stealth technology in the military affairs, frequency selecting surface technique receives the attention of various countries gradually.The English of frequency-selective surfaces is Frequency Selective Surfaces, is called for short FSS.It is a kind of space em filtering structure, can let the electromagnetic wave of special frequency pass through, and electromagnetic wave is filtered beyond making this frequency range.As be applied on the radome on fighter plane or naval vessel; Can realize our radar operate as normal; Other directions are arrived in the reflection of electromagnetic wave of enemy radar working frequency range; Cause enemy radar can't receive echo-signal, can not find our target, thereby can frequency selecting surface technique be applied to stealthy field.
Western developed country just began the FSS technology is studied as far back as the sixties in last century, and according to " AVIONIC MAGAZINE " article report, the stealthy fighter plane of F-22 made in U.S.A has just been taked the stealth radar cover of FSS fabrication techniques.Domesticly launch the FSS Study on Technology since the nineties in last century.A large amount of work has been done at aspects such as theory analysis and confirmatory experiments by scientific research institutions such as Northwestern Polytechnical University, BJ University of Aeronautics & Astronautics, Changchun University of Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, CAS; Theoretical analysis method about the FSS technology is very ripe, but FSS technology implementation but can't be broken through always.
Summary of the invention
In order to solve the problem that exists in the prior art; The invention provides a kind of dielectric truss structure frequency-selective surfaces stealth radar cover; This radome utilizes the dielectric truss as the back bone network that supports the FSS flexible screen; Thereby realize stable filtering characteristic, further improve stealthy performance of FSS radome and reliability thereof.
The technical scheme that technical solution problem of the present invention is adopted is following:
A kind of dielectric truss structure frequency-selective surfaces stealth radar cover, this radome comprises: radome substrate, dielectric truss, flexible substrates and FSS screen; Radome is an enclosed construction, is followed successively by radome substrate, dielectric truss, flexible substrates and FSS screen to the innermost layer by outermost layer; Radome substrate, dielectric truss, flexible substrates and FSS screen all are connected with adjacent component.
The principle of the invention:, be the effective way that realizes its radar invisible function if will with the FSS technical application on the radome of moulding, select suitable coupling medium to carry out rational supporting design.And the low-k of air and lower electromagnetic loss characteristic make it become selectable coupling medium.The dielectric truss promptly plays the effect of supporting the FSS flexible screen, and between radome and FSS flexible screen, the dielectric truss is as back bone network; Isolate the air layer of suitable thickness; Through the concrete structure of calculation Design FSS, make the radome overall structure produce resonance to a certain frequency electromagnetic wave, promptly produce frequency selective characteristic; Therefore the detection radar of enemy's emission reflexes to other directions and reduces echo-signal, thereby reaches the purpose of radar invisible.
The invention has the beneficial effects as follows: the present invention can make with the FSS radome filtering characteristic of realizing ideal of air as the coupling medium; Wide-angle is kept stable pass band with different polarization mode incident electromagnetic wave; The detection radar wave reflection of enemy's emission is reduced echo-signal to other directions, thereby realize the purpose of radar invisible.
Description of drawings
The plane equivalent structure figure of a kind of dielectric truss structure of Fig. 1 the present invention frequency-selective surfaces stealth radar cover.
Dielectric truss structure sketch map among a kind of dielectric truss structure of Fig. 2 the present invention frequency-selective surfaces stealth radar cover embodiment.
Use the straight-tapered FSS radome cross-sectional view of dielectric truss among a kind of dielectric truss structure of Fig. 3 the present invention frequency-selective surfaces stealth radar cover embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.
As shown in Figure 1, a kind of dielectric truss structure frequency-selective surfaces stealth radar cover, this radome comprises: radome substrate 1, dielectric truss 2, flexible substrates 3 and FSS screen 4; Radome is an enclosed construction, is followed successively by radome substrate 1, dielectric truss 2, flexible substrates 3 and FSS screen 4 to the innermost layer by outermost layer; Radome substrate 1, dielectric truss 2, flexible substrates 3 and FSS screen 4 all closely are connected with adjacent component.
With Fig. 2 and straight-tapered radome shown in Figure 3 is example.It is 25 μ m that flexible substrates 3 is chosen thickness, and dielectric constant is 3.0 polyimide film, and its size equals the area of radome inner surface, fan-shaped after being shaped as the straight-tapered radome and launching; Adopt plated film and photoetching process on polyimide film, to prepare the copper layer that thickness is 20 μ m, and realize 90 ° of cross hole shape unit F S S screens 4 of arranging; So far, flexible substrates 3 becomes one with FSS screen 4, forms the FSS flexible screen.It is 3.0 polyimide material that dielectric truss 2 is chosen dielectric constant; Use the mode of numerical controlled machinery processing to be prepared from; Be shaped as the round platform framework, as shown in Figure 2, comprise round platform shell of the no end 5, do not have end round platform shell 7 two roundlet platforms shell and four roots 6 down; Four roots, 6 equal in length, dividing equally arranges connects upward round platform shell of the no end 5 and round platform shell of the following no end 7.Round platform shell of the last no end 5 round external diameter of going to the bottom is 0.1 times of circle internal diameter at the bottom of the right cone radome; Under do not have the end round platform shell 7 round external diameter of going to the bottom and equal circle internal diameter at the bottom of the right cone radome; Upper and lower two round platform shell bus lengths of the no end are 0.02 times of right cone radome inner surface bus length, and the thickness of upper and lower two round platform shells of the no end and four roots is required air matching layer thickness.Smear cyanate ester resin as adhesive on dielectric truss 2 inboard skeleton surfaces; Utilize mould that the FSS flexible screen is surrounded Conical Shells With and send into dielectric truss 2 inside; Compress and be heated to 150 ° of C; Kept three hours, and made cyanic acid ester gum full solidification, FS S flexible screen and dielectric truss 2 become one; Cyanate ester resin is smeared as adhesive in skeleton surface in dielectric truss 2 outsides; Utilize mould that FSS flexible screen and dielectric truss 2 are together put into radome substrate 1 inside; Compress and be heated to 150 ° of C, kept three hours, make cyanic acid ester gum full solidification; Radome substrate 1, dielectric truss 2, flexible substrates 3 and FSS screen 4 become one, and have accomplished the preparation of dielectric truss structure FSS radome.
In the present embodiment, FSS shields 4 surfaces can be figure arbitrarily, like cross hole shape, cross annular, Y hole shape, Y annular, circle hole shape or annular or the like.
Claims (4)
1. a dielectric truss structure frequency-selective surfaces stealth radar cover is characterized in that this radome comprises: radome substrate (1), dielectric truss (2), flexible substrates (3) and FSS screen (4); Said radome is an enclosed construction, is followed successively by radome substrate (1), dielectric truss (2), flexible substrates (3) and FSS screen (4) to the innermost layer by outermost layer; Radome substrate (1), dielectric truss (2), flexible substrates (3) and FSS screen (4) all closely are connected with adjacent component.
2. a kind of dielectric truss structure frequency-selective surfaces stealth radar cover as claimed in claim 1 is characterized in that, said FSS screen (4) surface is cross hole shape, cross annular, Y hole shape, Y annular, circle hole shape or annular.
3. according to claim 1 or claim 2 a kind of dielectric truss structure frequency-selective surfaces stealth radar cover is characterized in that, the upper surface in said flexible substrates (3) adopts plated film with photoetching technique FSS to be shielded (4) and makes.
4. a kind of dielectric truss structure frequency-selective surfaces stealth radar cover as claimed in claim 1 is characterized in that, said dielectric truss (2) is connected with flexible substrates (3) with radome substrate (1) through gummed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101370280A CN102637953A (en) | 2012-05-04 | 2012-05-04 | Frequency-selection-surface invisible radome with dielectric medium truss structure |
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| CN2012101370280A CN102637953A (en) | 2012-05-04 | 2012-05-04 | Frequency-selection-surface invisible radome with dielectric medium truss structure |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868021A (en) * | 2012-09-27 | 2013-01-09 | 中国科学院长春光学精密机械与物理研究所 | High-performance frequency selection radar cover |
| CN102882002A (en) * | 2012-09-27 | 2013-01-16 | 中国科学院长春光学精密机械与物理研究所 | Composite frequency-selective-surface invisible radome |
| CN104779436A (en) * | 2015-04-14 | 2015-07-15 | 赵忠义 | Logistics device radome |
| CN105048102A (en) * | 2015-06-10 | 2015-11-11 | 湖北三江航天江北机械工程有限公司 | Method for adhering wave-adsorbing patches and aluminum foils to inner wall of taper-drum-shaped heat protection shield |
| CN105670370A (en) * | 2016-01-04 | 2016-06-15 | 北京环境特性研究所 | Wool top type broadband stealth material |
| EP2930788A4 (en) * | 2012-11-20 | 2016-07-13 | Kuang Chi Innovative Tech Ltd | Metamaterial, metamaterial preparation method and metamaterial design method |
| CN106654569A (en) * | 2017-03-13 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Conical energy-selecting antenna hood of monopole antenna and antenna system |
| CN106735867A (en) * | 2017-01-16 | 2017-05-31 | 福州大学 | FSS radomes processing method and processing unit (plant) based on multiple degrees of freedom laser robot |
| CN109490654A (en) * | 2018-07-13 | 2019-03-19 | 中国航空工业集团公司济南特种结构研究所 | A kind of multilayer FSS screen thunder and lightning coupling effect experimental rig and test method |
| CN109786975A (en) * | 2019-01-25 | 2019-05-21 | 西安电子科技大学 | A kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation |
| CN111893453A (en) * | 2020-07-21 | 2020-11-06 | 四川大学 | Method for preparing fine metal coating pattern on inner wall of pointed conical ceramic cavity |
| CN113075260A (en) * | 2021-02-25 | 2021-07-06 | 山西省交通信息通信有限公司 | Road bridge tunnel defect radar detection and multi-component processing method and system |
| TWI783692B (en) * | 2021-09-15 | 2022-11-11 | 國家中山科學研究院 | Hybrid Composite Broadband Microwave Components |
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| US5208603A (en) * | 1990-06-15 | 1993-05-04 | The Boeing Company | Frequency selective surface (FSS) |
| US6396451B1 (en) * | 2001-05-17 | 2002-05-28 | Trw Inc. | Precision multi-layer grids fabrication technique |
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| US5208603A (en) * | 1990-06-15 | 1993-05-04 | The Boeing Company | Frequency selective surface (FSS) |
| US6396451B1 (en) * | 2001-05-17 | 2002-05-28 | Trw Inc. | Precision multi-layer grids fabrication technique |
| CN2627056Y (en) * | 2003-08-06 | 2004-07-21 | 北京绿创环保科技有限责任公司 | Micro-perforated absorbent lined barrier board |
Non-Patent Citations (1)
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882002A (en) * | 2012-09-27 | 2013-01-16 | 中国科学院长春光学精密机械与物理研究所 | Composite frequency-selective-surface invisible radome |
| CN102868021B (en) * | 2012-09-27 | 2015-09-09 | 中国科学院长春光学精密机械与物理研究所 | A kind of High-performance frequency selection radar cover |
| CN102868021A (en) * | 2012-09-27 | 2013-01-09 | 中国科学院长春光学精密机械与物理研究所 | High-performance frequency selection radar cover |
| EP2930788A4 (en) * | 2012-11-20 | 2016-07-13 | Kuang Chi Innovative Tech Ltd | Metamaterial, metamaterial preparation method and metamaterial design method |
| US9653815B2 (en) | 2012-11-20 | 2017-05-16 | Kuang-Chi Innovative Technology Ltd. | Metamaterial, metamaterial preparation method and metamaterial design method |
| CN104779436A (en) * | 2015-04-14 | 2015-07-15 | 赵忠义 | Logistics device radome |
| CN105048102A (en) * | 2015-06-10 | 2015-11-11 | 湖北三江航天江北机械工程有限公司 | Method for adhering wave-adsorbing patches and aluminum foils to inner wall of taper-drum-shaped heat protection shield |
| CN105048102B (en) * | 2015-06-10 | 2018-01-19 | 湖北三江航天江北机械工程有限公司 | Bore barrel-shaped heat shield inwall bonding wave absorbing patch and the method for aluminium foil |
| CN105670370A (en) * | 2016-01-04 | 2016-06-15 | 北京环境特性研究所 | Wool top type broadband stealth material |
| CN105670370B (en) * | 2016-01-04 | 2017-11-03 | 北京环境特性研究所 | A kind of wool top molded breadth frequency stealth material |
| CN106735867A (en) * | 2017-01-16 | 2017-05-31 | 福州大学 | FSS radomes processing method and processing unit (plant) based on multiple degrees of freedom laser robot |
| CN106654569A (en) * | 2017-03-13 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Conical energy-selecting antenna hood of monopole antenna and antenna system |
| CN106654569B (en) * | 2017-03-13 | 2017-11-14 | 中国人民解放军国防科学技术大学 | The conical energy selection antenna house and antenna system of a kind of monopole antenna |
| CN109490654A (en) * | 2018-07-13 | 2019-03-19 | 中国航空工业集团公司济南特种结构研究所 | A kind of multilayer FSS screen thunder and lightning coupling effect experimental rig and test method |
| CN109786975A (en) * | 2019-01-25 | 2019-05-21 | 西安电子科技大学 | A kind of realization device of OAM vortex electromagnetic wave orbit plane omnidirectional radiation |
| CN111893453A (en) * | 2020-07-21 | 2020-11-06 | 四川大学 | Method for preparing fine metal coating pattern on inner wall of pointed conical ceramic cavity |
| CN113075260A (en) * | 2021-02-25 | 2021-07-06 | 山西省交通信息通信有限公司 | Road bridge tunnel defect radar detection and multi-component processing method and system |
| CN113075260B (en) * | 2021-02-25 | 2023-03-14 | 山西省交通信息通信有限公司 | Road bridge tunnel defect radar detection and multi-component processing method and system |
| TWI783692B (en) * | 2021-09-15 | 2022-11-11 | 國家中山科學研究院 | Hybrid Composite Broadband Microwave Components |
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Application publication date: 20120815 |