CN113782963B - Millimeter wave radome with electromagnetic shielding function and manufacturing method thereof - Google Patents
Millimeter wave radome with electromagnetic shielding function and manufacturing method thereof Download PDFInfo
- Publication number
- CN113782963B CN113782963B CN202111072513.XA CN202111072513A CN113782963B CN 113782963 B CN113782963 B CN 113782963B CN 202111072513 A CN202111072513 A CN 202111072513A CN 113782963 B CN113782963 B CN 113782963B
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- composite material
- material layer
- radome
- copper foil
- millimeter wave
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- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011889 copper foil Substances 0.000 claims abstract description 29
- 238000005476 soldering Methods 0.000 claims abstract description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims description 29
- 239000010453 quartz Substances 0.000 claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 27
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 20
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- VUACHFWYFDCGJF-UNTBIKODSA-N (1r)-7-methoxy-1-[(4-methoxyphenyl)methyl]-2,2-dimethyl-3,4-dihydro-1h-isoquinolin-2-ium-8-ol;chloride Chemical compound [Cl-].C1=CC(OC)=CC=C1C[C@H]1[N+](C)(C)CCC2=CC=C(OC)C(O)=C21 VUACHFWYFDCGJF-UNTBIKODSA-N 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003897 fog Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The embodiment of the invention provides a millimeter wave radome with an electromagnetic shielding function and a manufacturing method thereof, relates to the technical field of radomes and manufacturing methods thereof, and aims to improve the stealth and wave transmission performance of radomes. The radome sequentially comprises the following components from inside to outside: an inner composite layer, a shielding metal mesh, a double-sided conductive copper foil and an outer composite layer; the composite materials cut by the inner composite material layer and the outer composite material layer are alternately paved; the metal shielding grid is composed of metal wires; and paving a circle of double-sided conductive copper foil on the inner composite material layer, hanging soldering tin points, and paving the shielding metal grid on the double-sided conductive copper foil.
Description
Technical Field
The invention relates to the technical field of radomes and manufacturing methods thereof, in particular to a millimeter wave radome with an electromagnetic shielding function and a manufacturing method thereof.
Background
The millimeter-level electromagnetic wave detection equipment can capture, position and track the target, and control the guided weapon to fly to the target to realize guidance. Millimeter wave guidance has the advantages of microwave guidance and infrared guidance. The guidance system has small volume, light weight, easy high integration, high frequency bandwidth and resolution, difficult interception and interference of the other party, strong anti-interference capability and capability of distinguishing moving targets from background clutters, good speed discrimination of the targets, strong capability of passing smoke, fog, dust and haze, and better all-weather combat capability.
However, the guided missiles of millimeter wave instruction guidance, millimeter wave beam guidance and millimeter wave semi-active seeking all need to have radar to continuously track and irradiate targets in the flying process, so that the survivability is poor, the application is limited, and therefore, the guided weapon applying the millimeter wave antenna has electromagnetic shielding stealth capability in other wave bands and has maximum power and maximum transmittance in millimeter wave bands.
Disclosure of Invention
In order to solve the technical problems, the invention provides a millimeter wave radome with an electromagnetic shielding function and a manufacturing method thereof, and aims to improve the stealth and wave transmission performance of the radome.
Millimeter wave radome with electromagnetic shielding function, the radome includes from inside to outside in proper order: an inner composite material layer, a double-sided conductive copper foil, an outer composite material layer and a shielding metal grid; the inner composite material layer and the outer composite material layer are formed by alternately paving the cut composite materials; the metal shielding grid is composed of metal wires; and paving a circle of double-sided conductive copper foil on the inner composite material layer, hanging soldering tin points, and paving the shielding metal grid on the outer composite material layer.
The inner composite material layer is formed by annular cut quartz fabric and liquid bisphenol A type or solid bisphenol A type or phenolic epoxy resin prepreg.
The outer composite material layer is formed by petaline cut quartz fabric and liquid bisphenol A type or solid bisphenol A type or phenolic epoxy resin prepreg.
The double-sided conductive copper foil is positioned by using a positioning die, and the surface of the double-sided conductive copper foil is provided with interval marks; the interval of the interval marks is more than or equal to 8mm and less than or equal to 12mm, and the height between the lower edge of the double-sided conductive copper foil and the top of the radome is more than or equal to 105 mm and less than or equal to 115 mm.
The outer composite material layer is formed by laying composite materials according to joint crossing at 90 degrees.
The ring-cut quartz fabric was laid 6 layers.
The petal-shaped cut quartz fabrics are laid in 8 layers, and joints between each layer of quartz fabrics and the upper layer of quartz fabrics are overlapped in a 90-degree staggered mode.
The shielding metal grid is a metal wire transverse grid and a metal wire longitudinal grid, the grid spacing is more than or equal to 8mm and less than or equal to 12mm, and the resistance of any two points of the grid is less than or equal to 0.5 omega.
The millimeter wave radome with the electromagnetic shielding function can improve the standardization and the reliability of the radome; the invention solves the defect that the antenna emits millimeter waves and is easy to be detected by local radars; the detection effect of the antenna in the radome is ensured. After the quartz fabric prepreg cloth material is matched with the die, the working procedures such as solidification and polishing are carried out, so that the radome has a stable structure, is light and easy to install, and solves the problems of complex process, high cost and the like of manufacturing radomes according to weapons with different specifications.
Drawings
Fig. 1 is a schematic structural diagram of a millimeter wave radome with electromagnetic shielding function according to an embodiment of the present invention.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
Referring to fig. 1, the embodiment of the invention provides a millimeter wave radome with an electromagnetic shielding function, which sequentially comprises, from inside to outside: an inner composite material layer 3, a double-sided conductive copper foil 4, an outer composite material layer 1 and a shielding metal grid 2; the inner composite material layer 3 and the outer composite material layer 1 are formed by alternately paving the cut composite materials; the metal shielding grid 2 is composed of metal wires; and a double-sided conductive copper foil 4 is paved on the inner composite material layer 3 for a circle, soldering points are hung, and the shielding metal grid 2 is paved on the outer composite material layer 1.
The embodiment of the invention provides a millimeter wave radome with an electromagnetic shielding function and a manufacturing method thereof, wherein a quartz petal and an endless belt made of composite materials are cut; laying composite material on the mould to serve as a radome shell and a shielding metal grid; sealing a vacuum bag, solidifying at high temperature and high pressure, and demolding and forming; and testing the wave-transmitting function and the electromagnetic shielding function, and verifying the shielding performance. The radome provided by the invention is stable in structure, light and easy to install, and solves the problems of complex process, high cost and the like of manufacturing radomes according to weapons of different specifications by using the quartz fabric prepreg material to be matched with a die and then performing the procedures of curing, polishing and the like.
In the above embodiment, the inner composite layer 3 is formed by annular cut quartz fabric and liquid bisphenol a type or solid bisphenol a type or phenolic epoxy resin prepreg.
In the above embodiment, the outer composite layer 1 is formed by a petal-shaped cut quartz fabric and a liquid bisphenol a type or solid bisphenol a type or phenolic epoxy resin prepreg.
The structure formed by the quartz fabric and the liquid bisphenol A type or solid bisphenol A type or phenolic epoxy resin prepreg has the advantages of high rigidity, reliable structure and small weight.
In the above embodiment, the double-sided conductive copper foil 4 is positioned by using a positioning mold to ensure accurate position. The surface of the double-sided conductive copper foil 4 is provided with interval marks; the positions are convenient to identify, the distance between the interval marks is in the range of 8mm-12mm, and the height between the lower edge of the double-sided conductive copper foil 4 and the top of the radome is 110mm. And tin is hung on the marking points of the double-sided conductive copper foil 4, and the tin soldering points are used for covering the metal wires, so that the number of the tin soldering points is not excessive. The welding spots are as flat and thin as possible, and the welding spots are cleaned by alcohol.
In the above embodiment, the shielding metal mesh 2 is laid on the outer composite layer 1 according to the solder dot positions.
The outer composite material layer 1 is formed by laying composite materials according to joint crossing 90 degrees. And (3) laying the shielding metal grid 2 on the double-sided conductive copper foil 4 according to the positioning of the soldering points. The number of layers, thickness and size of the layers 3 and 1 of the inner and outer composite layers of the radome can be freely designed according to the specific mounting platform.
In the above embodiment, the ring-cut quartz fabric is laid in 6 layers. The petal-shaped cut quartz fabrics are laid in 8 layers, and joints between each layer of quartz fabrics and the upper layer of quartz fabrics are overlapped in a 90-degree staggered mode. The shielding metal grid 2 is a metal wire transverse grid and a metal wire longitudinal grid, the grid spacing is 8mm-12mm, and the resistance of any two points of the grid is less than or equal to 0.5 omega.
The embodiment of the invention also provides a manufacturing method of the millimeter wave radome with the electromagnetic shielding function, which adopts the radome and comprises the following steps:
step one: preparing quartz prepreg cloth, shielding metal wires, copper foil and soldering tin wires, and checking; raw materials, namely, composite material quartz prepreg cloth, shielding metal wires, copper foil and soldering tin wires, are purchased and whether the raw materials are qualified or not is checked;
step two: designing a forming die and processing; designing a forming die and machining according to the specification of the guide head;
step three: cutting the quartz prepreg cloth into petal shapes and endless belts;
step four: compress: laying 5 layers of petal-shaped quartz prepreg cloth and 6 layers of girdle quartz prepreg cloth on the forming die;
step five: laying a shielding grid: laying a 10mm-20mm double-sided copper foil for one circle, wherein the height of the lower edge of the copper foil from the top of the antenna housing is 110mm, positioning the copper foil on the surface of the antenna housing by using a positioning die, marking the corresponding position of the copper foil at intervals of 8mm-12mm, and coating tin on marking points of the copper foil, wherein the tin soldering points are based on covering metal wires; is not easy to be too much. Laying shielding metal wire transverse and longitudinal grids with the grid spacing of 8-12 mm; the welding spots are as flat and thin as possible, the welding spots are cleaned by alcohol, the resistance of any two points of the shielding grid is less than or equal to 0.5 omega, and the welding spots are covered by the periphery of the double-sided copper foil;
cleaning the soldering points by adopting alcohol, and covering the soldering points by the double-sided copper foil for one circle;
step six: secondary compress: applying 3 layers of petal presoaked cloth, and overlapping with the seam between the upper layers of cloth in a 90-degree dislocation manner;
step seven: and (3) curing and forming: sealing the antenna housing by adopting a vacuum bag, curing at a certain temperature and a certain pressure, curing at a high temperature and a high pressure, and demolding and forming;
step eight: and carrying out surface treatment on the radome: polishing and spraying paint;
step nine: performing a wave-transparent function test; an antenna matched with the antenna housing is arranged on the turntable by adopting a far-field measurement method, the transmitting assembly is started, and the receiving antenna is overhead and connected with the receiver. According to far field conditions, the receiving antenna is greater than 14 meters from the transmitting antenna. The signal received by the receiver is transmitted back to the control room through the communication equipment, the computer automatically reads the level data, and the turntable is adjusted to stay at the level peak value of the receiving antenna pattern;
step ten: and (3) performing electromagnetic shielding function test, and performing the test by adopting an electromagnetic shielding effectiveness coaxial method.
It will be evident to those skilled in the art that the embodiments of the invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. A plurality of units, modules or means recited in a system, means or terminal claim may also be implemented by means of software or hardware by means of one and the same unit, module or means. The terms first, second, etc. are used to denote a name, but not any particular order.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the embodiment of the present invention, and not for limiting, and although the embodiment of the present invention has been described in detail with reference to the above-mentioned preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solution of the embodiment of the present invention without departing from the spirit and scope of the technical solution of the embodiment of the present invention.
Claims (6)
1. Millimeter wave radome with electromagnetic shielding function, its characterized in that, the radome includes from inside to outside in proper order: an inner composite material layer, a double-sided conductive copper foil, an outer composite material layer and a shielding metal grid; the inner composite material layer and the outer composite material layer are formed by alternately paving the cut composite materials; the shielding metal grid is composed of metal wires; paving double-sided conductive copper foil on the inner composite material layer for one circle, hanging soldering tin points, and paving the shielding metal grid on the outer composite material layer;
the inner composite material layer is formed by annular cut quartz fabric and liquid bisphenol A type or solid bisphenol A type or phenolic epoxy resin prepreg;
the outer composite material layer is formed by petaline cut quartz fabric and liquid bisphenol A type or solid bisphenol A type or phenolic epoxy resin prepreg.
2. The millimeter wave radome with the electromagnetic shielding function according to claim 1, wherein the double-sided conductive copper foil is positioned by using a positioning die, and the surface of the double-sided conductive copper foil is provided with interval marks; the interval of the interval marks is more than or equal to 8mm and less than or equal to 12mm, and the height between the lower edge of the double-sided conductive copper foil and the top of the radome is more than or equal to 105 mm and less than or equal to 115 mm.
3. The millimeter wave radome with electromagnetic shielding function of claim 1, wherein the outer composite material layer is formed by using composite materials laid according to a seam crossing of 90 °.
4. The millimeter wave radome with electromagnetic shielding function of claim 1, wherein the ring-cut quartz fabric lays 6 layers.
5. The millimeter wave radome with electromagnetic shielding function according to claim 1, wherein the petal-shaped cut quartz fabrics are laid in 8 layers, and seams between each layer of quartz fabrics and the upper layer of quartz fabrics are overlapped in a 90-degree dislocation mode.
6. The millimeter wave radome with the electromagnetic shielding function according to claim 1, wherein the shielding metal mesh is a metal wire transverse and longitudinal mesh, the mesh spacing is greater than or equal to 8mm and less than or equal to 12mm, and the resistance of any two points of the mesh is less than or equal to 0.5 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072513.XA CN113782963B (en) | 2021-09-14 | 2021-09-14 | Millimeter wave radome with electromagnetic shielding function and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072513.XA CN113782963B (en) | 2021-09-14 | 2021-09-14 | Millimeter wave radome with electromagnetic shielding function and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113782963A CN113782963A (en) | 2021-12-10 |
| CN113782963B true CN113782963B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111072513.XA Active CN113782963B (en) | 2021-09-14 | 2021-09-14 | Millimeter wave radome with electromagnetic shielding function and manufacturing method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007142125A1 (en) * | 2006-06-02 | 2007-12-13 | Mitsubishi Cable Industries, Ltd. | Radio wave shielding partitioning plane material and method for manufacturing same |
| CN110808464A (en) * | 2018-08-06 | 2020-02-18 | 航天特种材料及工艺技术研究所 | Wave-transparent/stealth integrated metamaterial structure and antenna housing and antenna window with same |
| CN112968283A (en) * | 2021-02-05 | 2021-06-15 | 北方长龙新材料技术股份有限公司 | Radome with wave-transmitting, stealth and bulletproof functions and forming process thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8497812B2 (en) * | 2009-01-30 | 2013-07-30 | Raytheon Company | Composite radome and radiator structure |
-
2021
- 2021-09-14 CN CN202111072513.XA patent/CN113782963B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007142125A1 (en) * | 2006-06-02 | 2007-12-13 | Mitsubishi Cable Industries, Ltd. | Radio wave shielding partitioning plane material and method for manufacturing same |
| CN110808464A (en) * | 2018-08-06 | 2020-02-18 | 航天特种材料及工艺技术研究所 | Wave-transparent/stealth integrated metamaterial structure and antenna housing and antenna window with same |
| CN112968283A (en) * | 2021-02-05 | 2021-06-15 | 北方长龙新材料技术股份有限公司 | Radome with wave-transmitting, stealth and bulletproof functions and forming process thereof |
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| CN113782963A (en) | 2021-12-10 |
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