CN102790269A - X-waveband ultra-wave-band wave transmitting radome - Google Patents
X-waveband ultra-wave-band wave transmitting radome Download PDFInfo
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- CN102790269A CN102790269A CN2012102222426A CN201210222242A CN102790269A CN 102790269 A CN102790269 A CN 102790269A CN 2012102222426 A CN2012102222426 A CN 2012102222426A CN 201210222242 A CN201210222242 A CN 201210222242A CN 102790269 A CN102790269 A CN 102790269A
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Abstract
The invention discloses an X-waveband ultra-wave-band wave transmitting radome. The X-waveband ultra-wave-band wave transmitting radome is virtually divided into a plurality of base units, wherein the size of each base unit is smaller than one fifth of the wavelength of a response electromagnetic wave and comprises four layers of substrates; a first prepreg, a second prepreg and a third prepreg are arranged between two adjacent substrates; a first artificial microstructure and a second artificial microstructure are respectively arranged on the surfaces of two opposite sides of the first prepreg, which are in contact with the adjacent substrate; a third artificial microstructure is arranged on any one surface of the second prepreg, which is in contact with the adjacent substrate; and a fourth artificial microstructure and a fifth microstructure are respectively arranged on the surfaces of two opposite sides of the third prepreg, which are in contact with the adjacent substrate. According to the X-waveband ultra-wave-band wave transmitting radome disclosed by the invention, the light transmitting randome is designed by adopting an ultra-material principle; and multiple layers of artificial microstructures are arranged, so that when electronic waves emit into the radome, an impedance line of the radome gradually changes to achieve the impedance matching and wide-range light transmitting effects. The wave transmitting rate of the X-waveband ultra-wave-band wave transmitting radome in X waveband reaches over 90 percent.
Description
Technical field
The present invention relates to a kind of radome, relate in particular to the ultra wideband of a kind of X-band and pass through the wave antenna cover.
Background technology
Generally speaking, antenna system all can be provided with radome.The purpose of radome is the influence that the protection antenna system is avoided wind and rain, ice and snow, sand and dust and solar radiation etc., makes the antenna system service behaviour more stable, reliable.Alleviate wearing and tearing, the corrosion and aging of antenna system simultaneously, increase the service life.But radome is the barrier of antenna front, can produce the aerial radiation ripple to absorb and reflection, changes the free space Energy distribution of antenna, and influences the electric property of antenna to a certain extent.
At present the material of preparation radome adopts dielectric constant and loss angle tangent is low, mechanical strength is high material more, and like fiberglass, epoxy resin, high molecular polymer etc., the dielectric constant of material has unadjustable property.Mostly be uniform single walled structure, sandwich and spatial skeleton structure etc. on the structure; The design of cone wall thickness need take into account operation wavelength, radome size and dimension, environmental condition, material therefor in factors such as electric and structural performances; Difficulty reaches high ripple requirement thoroughly, and the working frequency range of radome is narrower, under different frequency range demands, needs to change radome; The repeated use of resource be can't realize, the waste of resource and the raising of equipment cost caused.
Summary of the invention
Technical problem to be solved by this invention is, to the above-mentioned deficiency of prior art, proposes a kind of radome that all has good wave penetrate capability at whole X-band (8-12GHZ).
The present invention solves the technical scheme that its technical problem adopts, and proposes the ultra wideband of a kind of X-band and passes through the wave antenna cover, and said radome is virtually divided into a plurality of elementary cells, and each elementary cell length and width is less than 1/5th of required response electromagnetic wavelength; Said elementary cell comprises four laminar substrates, is provided with first prepreg, second prepreg and the 3rd prepreg between the adjacent substrate; The relative both side surface that said first prepreg contacts with adjacent substrate is respectively arranged with the first artificial micro-structural and the second artificial micro-structural; Arbitrary surface that second prepreg contacts with adjacent substrate is provided with the third party and makes micro-structural, and the relative both side surface that the 3rd prepreg contacts with adjacent substrate is respectively arranged with four-player and makes micro-structural and the 5th artificial micro-structural; The said first artificial micro-structural is the filled squares metal patch; The said second artificial micro-structural is " ten " font metal structure; It is the filled squares metal patch of the length of side greater than the first artificial micro-structural that said third party makes micro-structural; It is identical with the second artificial micro-structural that said four-player is made the micro-structural shape, and the said the 5th artificial micro-structural shape is identical with the first artificial micro-structural.
Further, said baseplate material is that relative dielectric constant is 3.0 to 4.0, and loss angle tangent is 0.004 to 0.007 FR4 material.
Further, the relative dielectric constant of said first to the 3rd prepreg is 4.0 to 4.5, and loss angle tangent is 0.015 to 0.02.
Further, said elementary cell length and width size equates and length and width are of a size of 3.0 to 4.0 millimeters.
Further, the said first artificial micro-structural is the filled squares metal patch of 1.8 to 2.0 millimeters of the length of sides; Two strip metal branch length of the said second artificial micro-structural are all identical with live width, and length is 3.0 millimeters, and live width is 0.1 millimeter.
Further, said third party makes long 0.2 to 0.3 millimeter of the micro-structural side ratio first artificial micro-structural length of side.
Further, said baseplate material is that relative dielectric constant is 3.5, and loss angle tangent is 0.006 FR4 material.
Further, the relative dielectric constant of said first to the 3rd prepreg is 4.1, and loss angle tangent is 0.016.
Further, the said first artificial micro-structural length of side is 1.84 millimeters.
Further, said third party to make the micro-structural length of side be 2.04 millimeters.
The present invention passes through the wave antenna cover through adopting ultra material principle design, when making that through the artificial micro-structural of multilayer is set electromagnetic wave goes into to inject radome, and the impedance transition mechanism of radome and then reach impedance matching and wideband passes through the ripple effect.It passes through the ripple rate and reaches more than 90% at X-band in the present invention.
Description of drawings
Fig. 1 is the perspective view of the elementary cell of the ultra material of formation;
Fig. 2 passes through the cutaway view of the elementary cell of wave antenna cover for constituting the ultra wideband of X-band of the present invention;
Fig. 3 is the first artificial metal micro structure topological diagram;
Fig. 4 is second artificial metal's micro-structural topological diagram;
Fig. 5 third party makes the metal micro structure topological diagram;
Fig. 6 four-player is made the metal micro structure topological diagram;
Fig. 7 the 5th artificial metal's micro-structural topological diagram;
Fig. 8 is the S parameters simulation figure of the radome that adopts pure FR4 material and process;
Fig. 9 passes through the S parameters simulation figure of wave antenna cover for the ultra wideband of X-band of the present invention;
Figure 10 passes through the impedance matching design sketch of wave antenna cover for the ultra wideband of X-band of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Light, as electromagnetic a kind of, it is when passing glass; Because the wavelength of light is much larger than the size of atom; Therefore we can use the univers parameter of glass, and the details parameter of the atom of for example refractive index, rather than composition glass is described the response of glass to light.Accordingly, when research material was to other electromagnetic responses, any yardstick also can be used the univers parameter of material much smaller than the structure of electromagnetic wavelength to electromagnetic response in the material, and for example DIELECTRIC CONSTANTS and magnetic permeability μ describe.Thereby the structure through every of designing material makes all identical with magnetic permeability or different dielectric constant that makes material monolithic of the dielectric constant of material each point and magnetic permeability be certain rule and arranges; Magnetic permeability that rule is arranged and dielectric constant can make material that electromagnetic wave is had the response on the macroscopic view, for example converge electromagnetic wave, divergent electromagnetic ripple etc.Such has magnetic permeability that rule arranges and the material of dielectric constant is referred to as ultra material.
As shown in Figure 1, Fig. 1 is the perspective view of the elementary cell of the ultra material of formation.The elementary cell of ultra material comprises first substrate 1 that artificial micro-structural 2 and this artificial micro-structural are adhered to.Artificial micro-structural can be artificial metal's micro-structural; Artificial metal's micro-structural has and can produce the plane or the three-dimensional topological structure of response to incident electromagnetic wave electric field and/or magnetic field, and the pattern and/or the size that change the artificial metal's micro-structural on each ultra material elementary cell can change the response of each ultra material elementary cell to incident electromagnetic wave.Also can be coated with second substrate, 3, the second substrates 3, artificial micro-structural 2 and first substrate 1 on the artificial micro-structural 2 and constitute the elementary cell of ultra material.A plurality of ultra material elementary cells are arranged according to certain rules and can be made ultra material electromagnetic wave had the response of macroscopic view.Because ultra material monolithic needs have macroscopical electromagnetic response so each ultra material elementary cell need form continuous response to the response of incident electromagnetic wave to incident electromagnetic wave; This size that requires each ultra material elementary cell is preferably 1/10th of incident electromagnetic wave wavelength less than 1/5th of incident electromagnetic wave wavelength.During this section is described; The material monolithic that will surpass that we are artificial is divided into a plurality of ultra material elementary cells; But it is convenient to know that this kind division methods is merely description; Should not regard ultra material as by a plurality of ultra material elementary cells splicings or assemble, ultra material is that artificial metal's micro-structural cycle is arranged on the base material and can constitutes in the practical application, and technology is simple and with low cost.Artificial metal's micro-structural that cycle arranges on each the ultra material elementary cell that promptly refers to above-mentioned artificial division can produce continuous electromagnetic response to incident electromagnetic wave.
The present invention utilizes the ultra wideband of above-mentioned ultra material principle design X-band to pass through the wave antenna cover, and different with Fig. 1 is, the ultra wideband of X-band of the present invention passes through in the substrate of elementary cell of wave antenna cover and is provided with multiplelayer microstructure.Realize the effect that impedance matching and wideband pass through ripple through designing arranging of different micro-structurals.The present invention designs through following mode: (1) is set up circuit model, emulation through transmission line theory and is adjusted this circuit model until obtaining required effect and drawing electric capacity and the inductance value in the final circuit model; (2) design different micro-structurals to realize electric capacity and the inductance value in the foregoing circuit model.With the capacitance of the corresponding subelement of metal patch realization change, realize changing the inductance value of corresponding subelement with " ten " font metal structure among the present invention.Describe the topological structure and the size of each straton unit among the present invention below in detail.
It is as shown in Figure 2 that the ultra wideband of X-band of the present invention passes through the cutaway view of elementary cell of wave antenna cover; It comprises four laminar substrates 10, also is provided with first prepreg 20, second prepreg 30 and the 3rd prepreg 40 between the adjacent substrate to strengthen the mechanical performance of radome.The length and width of elementary cell equate and length and width are preferably dimensioned to be 3.0 to 4.0 millimeters.Among the present invention; The relative both side surface that first prepreg 20 contacts with adjacent substrate is respectively arranged with the first artificial micro-structural 21 and the second artificial micro-structural 22; Arbitrary surface that second prepreg 30 contacts with adjacent substrate is provided with the third party and makes relative both side surface that micro-structural 31, the three prepregs 40 contact with adjacent substrate and be respectively arranged with four-player and make micro-structural 41 and the 5th artificial micro-structural 42.It is 3.0 to 4.0 that baseplate material is preferably relative dielectric constant, and loss angle tangent is 0.004 to 0.007 FR4 material, and more preferably, baseplate material is that relative dielectric constant is 3.5, and loss angle tangent is 0.006 FR4 material; The relative dielectric constant of first to the 3rd prepreg preferably is 4.0 to 4.5; The loss angle tangent of first to the 3rd prepreg all is preferably 0.015 to 0.02; More preferably, the relative dielectric constant of first to the 3rd prepreg is 4.1, and loss angle tangent is 0.016.Artificial micro-structural is by prepreg and substrate clamping among the present invention, can avoid it under extraneous mal-condition, to be corroded so that influences the whole dielectric property of radome.
Please with reference to Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, Fig. 3 to Fig. 7 is respectively the topology figure of first to the 5th artificial metal's micro-structural.The first artificial metal micro structure is the filled squares metal patch of 1.8 to 2.0 millimeters of the length of sides, and preferably, the first artificial metal micro structure length of side is 1.84 millimeters; Second artificial metal's micro-structural is " ten " font metal structure, and its two strip metals branch length is all identical with live width, and length is 3.0 millimeters, and live width is 0.1 millimeter; It is the filled squares metal patch that the third party makes metal micro structure, long 0.2 to 0.3 millimeter of its side ratio first artificial metal micro structure length of side, and preferably, it is 2.04 millimeters that the third party makes the micro-structural length of side; It is identical with second artificial metal's micro-structural that four-player is made metal micro structure; The 5th artificial metal's micro-structural is identical with the first artificial metal micro structure.Adopt above-mentioned artificial metal's structure can make impedance transition mechanism in the present embodiment, thereby reach impedance matching and effect that wideband passes through ripple.
Example as a comparison, the S parameters simulation that Fig. 8 shows the radome that uses traditional pure FR4 material preparation is figure as a result, and Fig. 9 is the S parameters simulation of radome of the present invention figure as a result.Can find out that from the contrast of Fig. 8 and Fig. 9 the sheet material wave penetrate capability after X-band (8-12GHZ) adds artificial metal's micro-structural improves a lot.
Figure 10 is the impedance matching test result figure of radome of the present invention.As can be seen from Figure 10, after the present invention adopted artificial metal's micro-structural of multilayer coupling, its impedance and air coupling was splendid in X-band, and the resistance value average approximates 1, passes through the ripple rate more than 90%.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. the ultra wideband of X-band passes through the wave antenna cover, and it is characterized in that: said radome is virtually divided into a plurality of elementary cells, and each elementary cell length and width is less than 1/5th of required response electromagnetic wavelength; Said elementary cell comprises four laminar substrates, is provided with first prepreg, second prepreg and the 3rd prepreg between the adjacent substrate; The relative both side surface that said first prepreg contacts with adjacent substrate is respectively arranged with the first artificial micro-structural and the second artificial micro-structural; Arbitrary surface that second prepreg contacts with adjacent substrate is provided with the third party and makes micro-structural, and the relative both side surface that the 3rd prepreg contacts with adjacent substrate is respectively arranged with four-player and makes micro-structural and the 5th artificial micro-structural; The said first artificial micro-structural is the filled squares metal patch; The said second artificial micro-structural is " ten " font metal structure; It is the filled squares metal patch of the length of side greater than the first artificial micro-structural that said third party makes micro-structural; It is identical with the second artificial micro-structural that said four-player is made the micro-structural shape, and the said the 5th artificial micro-structural shape is identical with the first artificial micro-structural.
2. radome as claimed in claim 1 is characterized in that: said baseplate material is that relative dielectric constant is 3.0 to 4.0, and loss angle tangent is 0.004 to 0.007 FR4 material.
3. radome as claimed in claim 2 is characterized in that: the relative dielectric constant of said first to the 3rd prepreg is 4.0 to 4.5, and loss angle tangent is 0.015 to 0.02.
4. radome as claimed in claim 3 is characterized in that: said elementary cell length and width size equates and length and width are of a size of 3.0 to 4.0 millimeters.
5. radome as claimed in claim 4 is characterized in that: the said first artificial micro-structural is the filled squares metal patch of 1.8 to 2.0 millimeters of the length of sides; Two strip metal branch length of the said second artificial micro-structural are all identical with live width, and length is 3.0 millimeters, and live width is 0.1 millimeter.
6. like claim 1 or 5 described radomes, it is characterized in that: said third party makes long 0.2 to 0.3 millimeter of the micro-structural side ratio first artificial micro-structural length of side.
7. radome as claimed in claim 2 is characterized in that: said baseplate material is that relative dielectric constant is 3.5, and loss angle tangent is 0.006 FR4 material.
8. radome as claimed in claim 3 is characterized in that: the relative dielectric constant of said first to the 3rd prepreg is 4.1, and loss angle tangent is 0.016.
9. radome as claimed in claim 5 is characterized in that: the said first artificial micro-structural length of side is 1.84 millimeters.
10. radome as claimed in claim 6 is characterized in that: it is 2.04 millimeters that said third party makes the micro-structural length of side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222242.6A CN102790269B (en) | 2012-06-29 | 2012-06-29 | X-waveband ultra-wave-band wave transmitting radome |
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| CN201210222242.6A CN102790269B (en) | 2012-06-29 | 2012-06-29 | X-waveband ultra-wave-band wave transmitting radome |
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| CN102790269A true CN102790269A (en) | 2012-11-21 |
| CN102790269B CN102790269B (en) | 2015-02-04 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5208603A (en) * | 1990-06-15 | 1993-05-04 | The Boeing Company | Frequency selective surface (FSS) |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| EP2182582A1 (en) * | 2008-09-30 | 2010-05-05 | NTT DoCoMo, Inc. | Reflect array |
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2012
- 2012-06-29 CN CN201210222242.6A patent/CN102790269B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5208603A (en) * | 1990-06-15 | 1993-05-04 | The Boeing Company | Frequency selective surface (FSS) |
| EP2182582A1 (en) * | 2008-09-30 | 2010-05-05 | NTT DoCoMo, Inc. | Reflect array |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
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| CN102790269B (en) | 2015-02-04 |
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Effective date of registration: 20151120 Address after: 518057 Guangdong City, Nanshan District province high tech Zone in the middle of a high tech building, building No. 2, No. 9, building Patentee after: Shenzhen Guangqi Innovative Technology Co., Ltd. Address before: 518034 A international business center, No. 1061, Xiang Mei Road, Guangdong, Shenzhen, Futian District, China 18B Patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |