CN102637952B - Manufacturing method of metamaterial antenna housing - Google Patents
Manufacturing method of metamaterial antenna housing Download PDFInfo
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- CN102637952B CN102637952B CN201210107167.9A CN201210107167A CN102637952B CN 102637952 B CN102637952 B CN 102637952B CN 201210107167 A CN201210107167 A CN 201210107167A CN 102637952 B CN102637952 B CN 102637952B
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Abstract
The invention relates to a manufacturing method of a metamaterial antenna housing. The method comprises the following steps of: manufacturing a first mold, wherein the first mold comprises a concave cavity and a mold core arranged in the concave cavity, which form a mold cavity; injecting molten first plastics in the mold cavity, cooling and solidifying to obtain a housing body; manufacturing a second mold, wherein the second mold comprises a concave cavity and a mold core, the concave cavity is same as that of the first mold, and the mold core can be arranged in the concave cavity, and the mold core of the second mold is smaller than that of the first mold; placing the housing body in the concave cavity of the second mold, and pasting a metamaterial film with a artificial metamaterial microstructures on the inner surface of the housing body; closing the second mold, placing the mold core in the concave cavity to form a mold cavity; and injecting the molten second plastics in the mold cavity of the second mold, cooling and solidifying, then opening the mold, thus, obtaining the metamaterial antenna housing with the artificial metamaterial microstructures, wherein the surface shape of the metamaterial antenna housing is same as the shape of the mold cavity of the first mold.
Description
Technical field
The present invention relates to radome, more particularly, relate to a kind of manufacture method of radome.
Background technology
Present radome, as a kind of protector of antenna, is widely used, and along with the development of application each side, has higher requirement to the electric property of radome and mechanical property.In electric property, the many employings of current people are as all lower and the material that mechanical strength is high manufactures radome in the dielectric constants such as fiberglass and loss, but the electric property of the radome be made up of these materials is poor.And Meta Materials as a kind of novel electromagnetic wave transparent material gradually studied personnel to pay close attention to and for making radome.
Meta Materials is a kind of artificial composite structure material with extraordinary physical property not available for natural material.Current, people on medium substrate periodically arrangement there is certain geometrical shape Meta Materials artificial micro-structure to form Meta Materials.Due to the geometry of Meta Materials artificial micro-structure and size and arrangement mode can be utilized to change dielectric constant and/or the magnetic permeability of Meta Materials spatial points, it is made to produce the electromagnetic response of expection, to control electromagnetic wave propagation, visible, the radome made by Meta Materials can have good electric property.But, because existing Meta Materials continues to use the technique preparation of PCB more, be only applicable to the Meta Materials of working flat plate, and due to radome in order to various object needs to make various shape, cannot realize by existing technique.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of method manufacturing the metamaterial antenna cover of various shape as required.
The technical solution adopted for the present invention to solve the technical problems is: a kind of manufacture method of metamaterial antenna cover, and described manufacture method comprises the following steps:
A. make one first mould, described first mould has a cavity and is placed in the core in described cavity, thus forms a die cavity;
B. in described die cavity, inject the first plastics of melting;
C., after the first plastics cooling curing, a cover body is obtained;
D. make one second mould, described second mould has the cavity identical with the cavity of described first mould and can be placed in the core in described cavity, and the core of described second mould is less than the core of described first mould;
E. described cover body is put into the cavity of described second mould, and paste in the inner surface of described cover body the meta-material thin film that has Meta Materials artificial micro-structure;
F. closed described second mould, allows the core of described second mould be placed in cavity and to form a die cavity;
G. in the die cavity of described second mould, inject the second plastics of melting, the melt temperature of described second plastics is lower than the melt temperature of described first plastics;
H. die sinking after the second plastics cooling curing, obtains one and has Meta Materials artificial micro-structure and the surface configuration metamaterial antenna cover identical with the die cavity of described first mould.
Preferably, described meta-material thin film comprises film substrate and is attached to multiple Meta Materials artificial micro-structure of described film substrate.
Preferably, described film substrate is made of plastics.
Preferably, the melt temperature of described second plastics is lower than the melt temperature of the plastics for the manufacture of described film substrate.
Preferably, the melt temperature of described first plastics is lower than the melt temperature of the plastics for the manufacture of described film substrate.
Preferably, described meta-material thin film is fitted on the inner surface of described cover body by the method for hot pressing.
Preferably, described film substrate is flexible parent metal.
Preferably, described film substrate is made up of polyimides.
Preferably, the glass transition temperature of described first plastics is 95 ~ 120 DEG C.
Preferably, the glass transition temperature of described first plastics is 100 DEG C.
The manufacture method of metamaterial antenna cover of the present invention has following beneficial effect: the metamaterial antenna cover carrying out obtained various shape by making difform die cavity as required; and by secondary injection molding, Meta Materials artificial micro-structure is built in material internal and protects; prevent wearing and tearing and the destruction of bound pair Meta Materials artificial micro-structure outside use procedure, so that affect the electromagnetic performance of metamaterial antenna cover.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
Fig. 1 is the flow chart of the better embodiment of the manufacture method of metamaterial antenna cover of the present invention;
Fig. 2 and Fig. 3 is the injection moulding process figure of Fig. 1;
Fig. 4 is the enlarged diagram of the meta-material thin film in Fig. 3;
Fig. 5 is the stereogram of the hollow cylindrical metamaterial antenna cover obtained via the Shooting Technique in Fig. 2 and Fig. 3.
The name that in figure, each label is corresponding is called:
10 metamaterial antenna cover, 30 first moulds, 32,52 dies, 33,53 cavitys, 36,56 punch, 37,57 cores, 39,59 die cavitys, 40 first plastics, 50 second moulds, 60 meta-material thin film, 62 film substrates, 64 Meta Materials artificial micro-structure, Unit 66,70 second plastics
Embodiment
As shown in Figure 1 to Figure 3, be a better embodiment of the manufacture method of metamaterial antenna cover of the present invention.Described better embodiment comprises the following steps:
A. make one first mould 30, the core 37 that described first mould 30 has a cavity 33 and is placed in described cavity 33, thus form a die cavity 39.
B. in described die cavity 39, inject the first plastics 40 of melting.
C. die sinking after the first plastics 40 cooling curing, an obtained cover body 42.
D, making one second mould 50, the core 57 that described second mould 50 has the cavity 53 identical with the cavity 33 of described first mould 30 and can be placed in described cavity 53, described core 57 is less than the core 37 of described first mould 30.
E. described cover body 42 is put into the cavity 53 of described second mould 50, and paste in the inner surface of described cover body 42 meta-material thin film 60 that has Meta Materials artificial micro-structure.
F. closed described second mould 50, allows described core 57 be placed in described cavity 53 and to form a die cavity 59.
G. in the die cavity 59 of described second mould 50, inject the second plastics 70 of melting, the melt temperature of described second plastics 70 is lower than the melt temperature of described first plastics 40.
H. die sinking after the second plastics 70 cooling curing, obtains one and has Meta Materials artificial micro-structure and the surface configuration metamaterial antenna cover 10 identical with described die cavity 39, as shown in Figure 5.
Compared to existing technology; the manufacture method of metamaterial antenna cover of the present invention can carry out the metamaterial antenna cover 10 of obtained various shape as required by making difform die cavity 39; and by secondary injection molding, Meta Materials artificial micro-structure is built in described metamaterial antenna cover 10 internal protection; prevent wearing and tearing and the destruction of bound pair Meta Materials artificial micro-structure outside use procedure, so that affect the electromagnetic performance of described metamaterial antenna cover 10.In addition, because described metamaterial antenna cover 10 is integrated injection mo(u)lding, the globality of structure is better, has good mechanical property.
Below described better embodiment is described in detail: in described step a, described first mould 30 comprises and is separated from each other and relative motion and closed die 32 and punch 36 can occur, described cavity 33 is opened in described die 32, described core 37 is convexly equipped in described punch 36, when closed described die 32 and punch 36, described core 37 is placed in described cavity 33, thus forms described die cavity 39.The chamber wall profile of the cavity 33 of described first mould 30 is identical with the profile of the metamaterial antenna cover for making, and can make various shape as required.In the present embodiment, the shape of the cavity 33 of described first mould 30 is cylinder.
In described step b, described first plastics 40 are the thermoplasticss with lower glass transition temperatures (can be 95 ~ 120 DEG C).In the present embodiment, the glass transition temperature of described thermoplastics is 100 DEG C.
In described step c, after the first plastics 40 of melting inject described die cavity 39, need pressurize a period of time, allow described first plastics 40 be full of each position of described die cavity 39.After cooling curing, open described first mould 30, allow described die 32 be separated with punch 36, described cover body 42 departs from described cavity 33 with described core 37, and namely described cover body 42 takes off from described core 37 by available machine tool.
In described steps d, described second mould 50 comprises and is separated from each other and relative motion and closed die 52 and punch 56 can occur, and described cavity 53 is formed at described die 52, and described core 57 is convexly equipped in described punch 56.In fact, described second mould 50 can share the die 32 of described first mould 30, only needs to make the punch 56 with more small-sized core 57.
Please refer to Fig. 4, in described step e, described meta-material thin film 60 comprises film substrate 62 and is attached to multiple Meta Materials artificial micro-structure 64 of described film substrate 62.Described film substrate 62 can be made up of various high molecular polymer or its mixture, and thickness is about 20 to 30 microns.In the present embodiment, described film substrate 62 is the flexible parent metals be made up of polyimides (English Polyimide by name, is called for short PI).Generally, described multiple Meta Materials Meta Materials artificial micro-structure 64 is all the plane with certain geometrical shape or stereochemical structure that are formed by the line segment of certain length, and in being periodically arranged in two apparent surfaces of described film substrate 62 or arbitrary surface.And film substrate 62 part at each Meta Materials artificial micro-structure 64 and place thereof is called a unit 66.The physical dimension of each unit 66 is relevant with the electromagnetic wavelength through the metamaterial antenna cover for making, if its physical dimension is 1/10th of electromagnetic wavelength.
Specifically when designing described Meta Materials artificial micro-structure 64; according to the electromagnetic environment of the use occasion of metamaterial antenna cover; mainly consider the operating frequency of its claimed antenna; use electromagnetic theory; and by computer analog software as CST (the pure electromagnetic field simulation software by German CST Company) etc. design as described in the geometry of multiple Meta Materials artificial micro-structure 64, size and arrangement mode, and dielectric constant and the electromagnetic consumable of described film substrate 62 should be considered.Generally, we only design geometry and the size of a Meta Materials artificial micro-structure 64, and then with it for sample carries out copying the described multiple Meta Materials artificial micro-structure 64 forming array arrangement.As can be seen here, the geometry of described multiple Meta Materials artificial micro-structure 64 and size are all identical.Design time can be saved like this and improve design efficiency.Certainly, if not this object, geometry and/or the size of described multiple Meta Materials artificial micro-structure 64 completely can not be identical.
During actual fabrication, on described film substrate 62, described multiple Meta Materials artificial micro-structure 64 is printed out according to the geometry of described multiple Meta Materials artificial micro-structure 64 of design, size and arrangement mode by the control of computer program, described pattern in Fig. 3 is only an example of described Meta Materials artificial micro-structure 64, and described Meta Materials artificial micro-structure 64 is the metal micro structures be made up of the such as metal wire sections such as copper, but be not construed as limiting the invention.Certainly, described multiple Meta Materials artificial micro-structure 64 also can be formed on described film substrate 62 by chemical etching, plating, brill quarter, photoetching, electronics is carved or ion is carved mode.
In the present embodiment, described meta-material thin film 60 is closely fitted on the inner surface of described cover body 42 by the method for hot pressing.Therefore, for the manufacture of the melt temperature of the plastics of described film substrate 62 higher than the melt temperature of described first plastics 40.
In described step f, when described second mould 50 closes, between the edge contour of described core 57 and the inner surface of described cover body 42 and/or described meta-material thin film 60, form described die cavity 59.
In described step g, the melt temperature of described second plastics 70 is also lower than the melt temperature of the plastics for the manufacture of described film substrate 62.
In described step h, allow described second plastics 70 pressurize cooling curing in described die cavity 59, described die 52 can be allowed to be separated with punch 56 and described second mould 50 is opened (die sinking), described core 57 leaves described cavity 53, then goods are taken off (demoulding) from described core 57, thus obtained described in there is described multiple Meta Materials artificial micro-structure 64 and the shape metamaterial antenna cover 10 identical with described die cavity 39.
In addition, manufacture method of the present invention can be utilized to make multiple small-sized metamaterial antenna cover piece, be assembled into the effigurate large-scale metamaterial antenna cover of tool as requested by these small-sized metamaterial antenna cover pieces again, save the cost needing to do onesize die cavity when manufacturing large-scale antenna dome.
The above is only some embodiments of the present invention and/or embodiment, should not be construed as limiting the invention.For those skilled in the art, under the prerequisite not departing from basic thought of the present invention, some improvements and modifications can also be made, as in fact, described metamaterial antenna cover also can be obtained by two polymer material layers and the mode being placed in the sandwich construction that Meta Materials artificial micro-structure is therebetween formed by hot pressing, or by ultrasonic bond, the parts with Meta Materials artificial micro-structure and the mode not having the parts of Meta Materials artificial micro-structure to combine are obtained, and manufacture method of the present invention is also applicable to the manufacture of any parts such as housing as electronic equipment, to meet the requirement to its electromagnetic performance in engineering practice, and these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a manufacture method for metamaterial antenna cover, is characterized in that, described manufacture method comprises the following steps:
A. make one first mould, described first mould has a cavity and is placed in the core in described cavity, thus forms a die cavity;
B. in described die cavity, inject the first plastics of melting;
C., after the first plastics cooling curing, a cover body is obtained;
D. make one second mould, described second mould has the cavity identical with the cavity of described first mould and can be placed in the core in described cavity, and the core of described second mould is less than the core of described first mould;
E. described cover body is put into the cavity of described second mould, and paste in the inner surface of described cover body the meta-material thin film that has Meta Materials artificial micro-structure;
F. closed described second mould, allows the core of described second mould be placed in cavity and to form a die cavity;
G. in the die cavity of described second mould, inject the second plastics of melting, the melt temperature of described second plastics is lower than the melt temperature of described first plastics;
H. die sinking after the second plastics cooling curing, obtains one and has Meta Materials artificial micro-structure and the surface configuration metamaterial antenna cover identical with the die cavity of described first mould;
In described step a, described first mould comprises and is separated from each other and relative motion and closed die and punch can occur, described cavity is opened in described die, described core is convexly equipped in described punch, when closed described die and punch, described core is placed in described cavity, thus forms described die cavity;
In described steps d, described second mould comprises and is separated from each other and relative motion and closed die and punch can occur, described cavity is formed at described die, described core is convexly equipped in described punch, wherein, the recessed film of described second mould is identical with the die of described first mould, and the core of described second mould is less than the core of described first mould.
2. the manufacture method of metamaterial antenna cover according to claim 1, is characterized in that, described meta-material thin film comprises film substrate and is attached to multiple Meta Materials artificial micro-structure of described film substrate.
3. the manufacture method of metamaterial antenna cover according to claim 2, is characterized in that, described film substrate is made of plastics.
4. the manufacture method of metamaterial antenna cover according to claim 3, is characterized in that, the melt temperature of described second plastics is lower than the melt temperature of the plastics for the manufacture of described film substrate.
5. the manufacture method of metamaterial antenna cover according to claim 3, is characterized in that, the melt temperature of described first plastics is lower than the melt temperature of the plastics for the manufacture of described film substrate.
6. the manufacture method of metamaterial antenna cover according to claim 5, is characterized in that, described meta-material thin film is fitted on the inner surface of described cover body by the method for hot pressing.
7. the manufacture method of metamaterial antenna cover according to claim 2, is characterized in that, described film substrate is flexible parent metal.
8. the manufacture method of metamaterial antenna cover according to claim 7, is characterized in that, described film substrate is made up of polyimides.
9. the manufacture method of metamaterial antenna cover according to claim 1, is characterized in that, the glass transition temperature of described first plastics is 95 ~ 120 DEG C.
10. the manufacture method of metamaterial antenna cover according to claim 9, is characterized in that, the glass transition temperature of described first plastics is 100 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210107167.9A CN102637952B (en) | 2012-04-13 | 2012-04-13 | Manufacturing method of metamaterial antenna housing |
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| CN201210107167.9A CN102637952B (en) | 2012-04-13 | 2012-04-13 | Manufacturing method of metamaterial antenna housing |
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| CN102637952A CN102637952A (en) | 2012-08-15 |
| CN102637952B true CN102637952B (en) | 2015-06-17 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682652B (en) * | 2012-08-31 | 2018-09-21 | 深圳光启高等理工研究院 | Meta Materials and preparation method, meta-material satellite antenna and satellite receiving system |
| CN103682659B (en) * | 2012-08-31 | 2018-05-22 | 深圳光启高等理工研究院 | Meta Materials and preparation method, meta-material satellite antenna and satellite receiving system |
| CN103682654B (en) * | 2012-08-31 | 2018-04-20 | 深圳光启高等理工研究院 | Meta Materials and preparation method, meta-material satellite antenna and satellite receiving system |
| CN102969573B (en) * | 2012-11-20 | 2013-10-30 | 深圳光启创新技术有限公司 | Preparation method of three-dimensional-structure metamaterial |
| CN102983407B (en) * | 2012-11-20 | 2013-12-25 | 深圳光启创新技术有限公司 | Three-dimensional structure metamaterial |
| WO2014079298A1 (en) * | 2012-11-20 | 2014-05-30 | 深圳光启创新技术有限公司 | Metamaterial, metamaterial preparation method and metamaterial design method |
| CN103001002B (en) * | 2012-11-20 | 2014-04-16 | 深圳光启创新技术有限公司 | Metamaterial and metamaterial design method |
| CN110818440B (en) * | 2019-11-04 | 2022-02-15 | 湖北三江航天江北机械工程有限公司 | Near-net compression molding and moisture-proof treatment method for sandwich-structure quartz composite ceramic radome |
| CN111435764B (en) * | 2020-03-20 | 2022-04-15 | 上海阿莱德实业股份有限公司 | Preparation method of 5G base station antenna housing integrating antenna radiation unit and prepared antenna housing |
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2012
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Effective date of registration: 20210422 Address after: 518057 2 / F, software building, No.9, Gaoxin Middle Road, Nanshan District, Shenzhen, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 518034. A, 18B, CIC international business center, 1061 Mei Xiang Road, Shenzhen, Guangdong, Futian District Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |