CN103407018A - Antenna and antenna cover thereof as well as mould and forming process of antenna cover - Google Patents
Antenna and antenna cover thereof as well as mould and forming process of antenna cover Download PDFInfo
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- CN103407018A CN103407018A CN2013102800327A CN201310280032A CN103407018A CN 103407018 A CN103407018 A CN 103407018A CN 2013102800327 A CN2013102800327 A CN 2013102800327A CN 201310280032 A CN201310280032 A CN 201310280032A CN 103407018 A CN103407018 A CN 103407018A
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Abstract
The invention mainly relates to an antenna cover which is of a cylindrical structure which is integrally formed. The antenna cover comprises an upper cover with a hollow material structure and a lower cover with a compact material structure, wherein the upper cover and lower cover are divided by an invisible longitudinal section, and the upper cover and the lower cover are subjected to integrated compression molding. In addition, the invention relates to an antenna adopting the antenna cover, a mould for preparing the antenna cover as well as an antenna cover forming process for manufacturing the antenna cover. The process mainly adopts compression molding so as to obtain the antenna cover with a closed profiled bar structure. The invention provides the mould and the forming process and the like for improving the antenna cover based on the same idea, the antenna cover obtained by the idea has the closed profiled bar structure, excellent electromagnetism wave-transparent property and mechanical property can be achieved and are supported by measured data, and the antenna cover is simple in process, low in cost and is beneficial to volume production and popularization and application in the antenna.
Description
Technical field
The present invention relates to a kind of communication antenna, further relate to the antenna house that it adopts, and should be for mould and the moulding process of this antenna house of moulding.
Background technology
As everyone knows, mobile communication antenna is reception and the transmitter of electromagnetic wave signal, and all mobile communication antennas all need to be equipped with antenna house usually, and antenna house is because of the difference of material behavior, also can be different to radiation index and the circuit Index Influence of antenna.
It is two parameters that antenna house affects major embodiment to antenna electric performance: the dielectric constant of antenna house and loss angle tangent.Effectively reduce these two parameters particularly the value of dielectric constant will be conducive to reduce the harmful effect of antenna house to antenna electric performance.
Yet, in prior art for the dielectric constant of mobile communication antenna cover material generally more than 3 farads/meter (F/m), although, military radome adopts cellular material or the expanded material of sandwich structure, can make dielectric constant drop to lower level, but these materials are generally because of complex forming technology and the product for civilian use that is not suitable for producing in enormous quantities with high costs.
Applicant Comba Telecom Systems (China) Co., Ltd., the day for announcing is on March 7th, 2012, notification number is in the utility model patent of CN202156083U, for above-mentioned prior art more early, carried out on the basis of defect analysis, further disclosed a kind of sheet material for the manufacture of antenna house, it specifically discloses a kind of glass for the manufacture of antenna house (glass fibre) hollow fabric sheet material, by glass fibre, air, resin forms, this material has the ultralow Electrical Indexes such as dielectric constant, the antenna house of moulding can significantly improve circuit and the radiation characteristic of antenna of mobile communication base station thus.
Very important phenomenon is, those skilled in that art, for the cognition of antenna house, for the ease of processing and assembling, mainly rest on the separable assembled structure, and also, antenna house is generally divided into two parts and assembles mutually.Also once propose in the industry the antenna house solution of syntype structure, but adopt winding process to be embodied as the master, be unsuitable for the application of aforementioned sheet material.For the disclosed sheet material of aforementioned CN202156083U patent, for composite factors such as cost, simplicities, consider, those skilled in the art are subjected to the limitation of this cognition, still be used to adopt manual pasting forming process, and manual pasting forming process is covered with its inadequate natural endowment for the antenna with complex section, emphasis shows and can't standardization realize temperature control, fiber content control, products thickness control etc., and these factors all can affect homogeneity of product.As can be seen here, the disclosed sheet material of CN202156083U patent to those skilled in the art, is limited to it and simplifies by manual pasting forming process and antenna house split the inertial thinking of manufacturing, and can not meet the needs of production in enormous quantities.
In prior art, also have the antenna house of pultrusion, well-known, pultrusion mainly is only applicable to the forming materials of solid wall structure, is not suitable for aforesaid glass hollow fabric sheet material.Those skilled in the art can seek the compression molding scheme antenna house that adopts glass hollow fabric sheet material is processed in theory, and still, compression molding mode commonly used is mainly used in the formed product of Open architecture.
Comprehensive above-mentioned analysis is as can be known, and the antenna house that utilizes glass fibre hollow fabric sheet material to make needs to break through the inertia cognition of this area, and prior art is carried out to organic combination again.
Summary of the invention
The first purpose of the present invention is to provide a kind of antenna house mould, so that form the antenna house of closed profile shapes structure.
The present invention wants the second purpose to be to provide a kind of antenna house moulding process, with the antenna house that utilizes identical or different material preparation to have closed profile shapes structure.
The 3rd purpose of the present invention is to provide a kind of antenna house with closed profile shapes structure.
The 4th purpose of the present invention is to provide a kind of antenna, the antenna house provided to apply the 3rd purpose.
For reaching the first above-mentioned purpose, the technical scheme that antenna house mould provided by the present invention adopts is:
This mould comprises the patrix that all is the lengthwise shape, counterdie and core rod, described core rod is one-body molded uniformly of cross section, described counterdie and patrix be provided with relative to lengthwise type groove, counterdie is relative with patrix establishes described core rod with the die cavity with core rod matched moulds formation tubular to also covering, described die cavity be take an illusory vertical section and as boundary, is included the die cavity that is used to form the upper cover with hollow material-structure and be used to form and the one-body molded die cavity that but has the lower cover of closely knit material-structure of described upper cover, described core rod is provided with fixed axis at its longitudinally two ends, described counterdie and patrix are provided with at its longitudinally two ends be used to supporting described fixed axis to form the holddown groove of described die cavity.
For reaching the second purpose of the present invention, the antenna house moulding process that the present invention's the second purpose is alleged, comprise the steps:
(1) preparation is suitable for filling at least the sheet material that being used to form of upper cover die cavity as claimed in claim 1 has the upper cover of hollow material-structure, with being suitable for, fill at least the sheet material that being used to form of lower cover die cavity as claimed in claim 1 has the lower cover of closely knit material-structure, sheet material and resin prepreg are shaped to the prepreg sheet material;
(2) preparation described mould by it preheating of heating, detect described mold temperature until its while reaching preset value, corresponding upper cover die cavity and lower cover die cavity, be attached to corresponding prepreg sheet material on the relevant position of core rod;
(3) will be attached with core rod and counterdie and the Ccope closing machine of described prepreg sheet material, so that patrix and counterdie closure are to implement mold pressing, and mould is incubated, by mold pressing and insulation, make described upper cover have the hollow material-structure, make described lower cover have closely knit material-structure;
(4) after the insulation of Preset Time length, in type antenna house is unloaded in the demoulding.
Wherein, step (1) and step (2) are synchronously carried out or the order exchange.
Preferably, in described step (1), the different piece of the sheet material with hollow material-structure of employing monolithic is used as the sheet material of described upper cover and lower cover.It is that the stock cutting obtains that the sheet material with hollow material-structure of described monolithic adopts the glass fibre hollow fabric.
In described step (1), described lower cover also adopts the sheet material with hollow material-structure of one or more auxiliary sheet material with hollow material and described monolithic stacked, and by compression molding, is the lower cover with closely knit material-structure in step (3).Described auxiliary sheet material adopt the glass fibre hollow fabric or for the simple glass fiber cloth be that the stock cutting obtains.
In described step (4), its knockout course is specially: separate upper die and lower die, take out the antenna house of core rod and upper formation thereof, an end of core rod longitudinally is fixed, adopt frock clamp to eject this antenna house along the other end of described core rod longitudinally.
For reaching the 3rd purpose of the present invention, adopt following technical scheme: described antenna house, be integrated tubular structure, it comprises the upper cover with hollow material-structure and the lower cover with closely knit material-structure, described upper cover and lower cover Integral mold are molded.
Flexibly, in a kind of mode, described upper cover comprises the glass fibre hollow fabric of one deck through resin prepreg, and described lower cover comprises multilayer molded glass fibre hollow fabric after resin prepreg.In another kind of mode, described upper cover comprises the glass fibre hollow fabric of one deck through resin prepreg, and described lower cover comprises that one deck is through glass fibre hollow fabric molded after resin prepreg and one deck molded simple glass fiber cloth after resin prepreg at least.
Preferably, the layer made by the glass fibre hollow fabric of described upper cover and lower cover is integrated sheet material on structure.
Described antenna house can be obtained by foregoing moulding process preparation.
For reaching the 4th purpose of the present invention, a kind of antenna provided by the present invention, have the metallic reflection plate and be arranged on the radiating element on the metallic reflection plate, this antenna also has as the described antenna house of the 3rd purpose, and the metallic reflection plate of described antenna is placed in the formed tubular of described antenna house inner space.
Compared with prior art, the present invention has following advantage:
At first, the present invention has changed the antenna house tradition mode of production of hand pasting forming in the industry, can with more efficiently, more mechanization and the antenna house of the closed profile shapes structure of the mode production integration moulding of automation more, the antenna house of producing in batches in mode of the present invention can obtain the uniformity of stable quality and retention parameter.
Secondly, mould structure of the present invention is simple, is convenient to realize, with low cost, again because the production technology concrete steps are also comparatively simple and easy, thereby, easily implement.
Moreover, antenna house prepared by the present invention, has closed profile shapes structure, self-assembling formation is suitable for the hollow material-structure that signal penetrates and is upper cover and is lower cover for hard-wired closely knit material-structure, and as previously mentioned, its homogeneity of product is good, steady quality, therefore, it,, aspect Electro-magnetic Wave Penetrate and mechanical property, having obtained reasonable balance, can be widely used in antenna.
The accompanying drawing explanation
Fig. 1 is the schematic cross section of antenna house of the present invention;
Fig. 2 is the STRUCTURE DECOMPOSITION figure of antenna house mould of the present invention;
Fig. 3 is the schematic cross section of antenna house mould of the present invention;
Fig. 4 is the blowing process schematic diagram of antenna house moulding process of the present invention;
Fig. 5 is the matched moulds insulating process schematic diagram of antenna house moulding process of the present invention;
Fig. 6 is the knockout course schematic diagram of antenna house moulding process of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with drawings and Examples.
Refer to the cross sectional representation of of the present invention a kind of antenna house 1 shown in Figure 1, can know announcement by this figure, antenna house 1 of the present invention is as manufactured goods, the part that is formed in one, and integral body is the lengthwise shape, adopts follow-up moulding process compacting to form.This antenna house 1 (is consulted Fig. 1 cross section boundary line OO ' with an illusory vertical section, illusory section for this place, boundary line) be boundary, be divided into upper cover 11 and lower cover 12, described upper cover 11 has the hollow material-structure, adopting single-layer glass fiber hollow fabric stock is main body, with resin prepreg, adds in case of necessity other known typical additives, make thus prepreg sheet material 4(and consult Fig. 4), the further mold pressing of sheet material makes thus.Due to the glass fibre hollow fabric, have the connection single that is provided with vertical connection between ，Zai top layer, upper and lower two top layers, therefore can form netted hollow structure, realize the hollow effect.12 of described lower covers have closely knit material-structure, the structure of lower cover 12, both can through mold pressing, reach closely knit effect by the described glass fibre hollow fabric of multilayer, can be also on the basis of layer of glass hollow fabric, stacked one or more layers simple glass fiber cloth (felt), then through moulding process compression molding of the present invention, to obtain the effect of fiberglass.Described lower cover 12 is owing to having hollow structure, therefore its Electro-magnetic Wave Penetrate performance is better, dielectric constant can reach below 2F/m, described upper cover 11 is due to the mechanical performance with fiberglass, therefore can be used as the installation backboard of antenna, 1/3 of the density the when density of whole slave antenna cover 1 is tradition employing simple glass steel.
It is to be noted, described glass fibre hollow fabric, be well known to those skilled in the art, and by glass fibre hollow fabric and resin even further flexibly interpolation know that respectively typical additives carries out this technique of preimpregnation, also be well known to those skilled in the art, therefore, the glass doughnut fabric of indication of the present invention reaches and makes therefrom the sheet material for mold pressing, be well known to those skilled in the art in fact, therefore not all rightly carefully state at this.
Preferably, the prepreg sheet material 4 that described upper cover 11 and lower cover 12 all have one deck to be obtained by the mixed resin of described glass fibre hollow fabric, and this sheet material is same sheet material, described upper cover 11 and lower cover 12 are only the different pieces that occupies this prepreg sheet material 4, so, more be conducive to the one-body molded of upper cover 11 and lower cover 12.
Antenna house 1 of the present invention, integral body roughly is tubular, therefore it forms a tubular inner space 10, in this space 10, insert the metallic reflection plate (not shown) that is equiped with one or more radiating elements (not shown), can form antenna provided by the present invention (not shown).As for the electrical construction of this antenna, because belonging to known technology, do not describe in detail for this reason.
In order to manufacture antenna house 1 of the present invention, the present invention further provides an antenna house mould 2.
Please in conjunction with Fig. 2 and Fig. 3, mould 2 of the present invention comprises patrix 21, counterdie 22 and the core rod 23 that all is the lengthwise shape, and described core rod 23 is one-body molded uniformly of cross section, and its cross section is namely large with 10 cross sections, tubular inner space of described antenna house 1 etc.Described counterdie 22 and patrix 21 be provided with relative to lengthwise type groove 20, the shape of groove 20 obviously also with the corresponding adaptation of the corresponding site of described antenna house 1.Counterdie 22 is relative with patrix 21 establishes described core rod 23 with the die cavity 28 with core rod 23 matched moulds formation tubulars to also covering, preferably, the thickness at any place of described die cavity 28 all maintains same numerical value, and antenna house 1 quality of preparation is just very even thus, and is conducive to keep the uniformity of its performance.Described die cavity 28 be take an illusory vertical section (consulting the label OO ' in Fig. 1) and as boundary, is included the die cavity 281 of the upper cover 11 that is used to form described antenna house 1 and be used to form the die cavity 282 of the lower cover 12 of described antenna house 1, the alleged illusory vertical section of alleged illusory vertical section and aforementioned antenna house 1 is corresponding vertical section, position herein, in forming process, be same vertical section, it can occupy the arbitrary height place, is divided into two and gets final product with the cross section by described antenna house 1.For ease of fixing operation, described core rod 23 is provided with fixed axis 27 at its longitudinally two ends, and described counterdie 22 and patrix 21 are provided with at its longitudinally two ends be used to supporting the holddown groove (not label) of described fixed axis 27 to form described die cavity 28.
As can be known in conjunction with above-mentioned announcement about antenna house 1 and antenna, in described die cavity 28, part die cavity 281 is used to form the described upper cover 11 of processing, 282 of remainder die cavities are be used to being processed to form described lower cover 12, and difference is that the material relevant parameters that two place's die cavities 281,282 are filled should be differentiated.
In order to disclose the principle of utilizing the described antenna house 1 of described mould 2 preparation, below refer to Fig. 4, Fig. 5 and Fig. 6 and coordinate following step in order to jointly disclose antenna house 1 moulding process of the present invention:
Step (1) is the preparation process, in this process, preparation one has the sheet material of hollow material-structure, it is aforementioned preferred glass fibre hollow fabric sheet material, in the preferred embodiment of the present invention, this sheet material of cutting is to just filling the size of described die cavity fully, the filler that means described upper cover 11 die cavities and lower cover 12 die cavities is all considered, also mean that described upper cover 11 and lower cover 12 all will be formed by the different piece of this stock (sheet material), in addition, adopt the glass fibre hollow fabric to be cut into the auxiliary sheet material (not shown) that one or more layers can fill described lower cover 12 die cavities completely, these sheet materials (stock) or auxiliary sheet material and resin are carried out to preimpregnation, be shaped to prepreg sheet material 4.
In the present invention, as a kind of replacement means, described one or more layers auxiliary sheet material can be replaced by known simple glass fiber cloth (felt), higher than simple glass fiber cloth (felt), just can further save cost with this kind substitute mode because of glass fibre hollow fabric cost.
Step (2) mainly realizes pre-gentle blowing.At first, to the mould 2 provided by the present invention preheating of heating; When the temperature that detects this mould 2 reaches preset value, described prepreg sheet material 4 is attached on core rod 23.While adhering to prepreg sheet material 4, should with the position of lower cover die cavity 282, carry out by corresponding described upper cover die cavity 281, also namely as shown in Figure 4, first by maximum prepreg sheet material 4, the middle part of the prepreg sheet material 4 of also can be simultaneously making be used to the glass fibre hollow fabric that forms upper cover 11 and lower cover 12 first is attached to core rod 23 end faces, under both sides, folding, interior receipts, finally be around to core rod 23 bottom surfaces and wrap up whole core rod 23.When the prepreg sheet material 4 that has one or more layers auxiliary sheet material to make, these prepreg sheet materials 4 are layed in to core rod 23 bottoms in Fig. 4, multilayer laminated setting, namely accused.
Step (3) is its matched moulds insulating process.Consult Fig. 5, the lathe shown in Fig. 5, change to closure state from folding condition.This lathe has bottom fixed station 51 and top dipper crowding gear 52, described counterdie 22 is fixed on the fixed station 51 of bottom, 21 of described patrixes are fixed on the pressing plate 53 of top dipper crowding gear 52 bottom sides, patrix 21 and counterdie 22 positions align, the core rod 23 that is attached with prepreg sheet material 4 in previous step is placed on the relevant position of patrix shown in Figure 5 21, and the fixed axis 27 at core rod 23 two ends exposes naturally.Then, described dipper crowding gear 52 is subjected to drive to carry out and operates, its bottom side pressing plate 53 is descending, directly patrix 21 realizes that with counterdie 22 tight closure matched moulds is with the prepreg sheet material 4 enforcement mold pressings in die cavity 28, have the lower cover die cavity 282 of multi-layer sheet structure to be molded closely knit, the sheet material of upper cover die cavity 281 can roughly keep original hollow structure.Continue to keep the matched moulds state of counterdie 22 and patrix 21 until default time span continues insulation to mould 2 in order to will ly solidify in this time span scope.
Step (4) is knockout course.Through the insulation of previous step, after arriving default time span, antenna house solidifies, and can carry out the demoulding.During the demoulding, it is up that mechanical dipper crowding gear 52 drives its front end clamp plate 53 drive patrixes 21, and patrix 21 and counterdie 22 are separated, and can take out the antenna house 1 of core rod 23 and upper formation thereof.As shown in Figure 6, an end of core rod 23 longitudinallies can be fixed, adopt frock clamp to eject to unload this antenna house 1 along the other end of described core rod 23 longitudinallies.
As fully visible, the present invention is around the improvement of antenna house and the mould proposed, moulding process etc., all based on same idea, the antenna house that obtains of thought has closed profile shapes structure thus, and its Electro-magnetic Wave Penetrate is functional, and mechanical performance is also better, the measured data support is all arranged as previously shown, and technique is simple, with low cost, be beneficial to and produce in enormous quantities and promote the use of in antenna.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (13)
1. antenna house mould, it is characterized in that, it comprises the patrix that all is the lengthwise shape, counterdie and core rod, described core rod is one-body molded uniformly of cross section, described counterdie and patrix be provided with relative to lengthwise type groove, counterdie is relative with patrix establishes described core rod with the die cavity with core rod matched moulds formation tubular to also covering, described die cavity be take an illusory vertical section and as boundary, is included the die cavity that is used to form the upper cover with hollow material-structure and be used to form and the one-body molded die cavity that but has the lower cover of closely knit material-structure of described upper cover, described core rod is provided with fixed axis at its longitudinally two ends, described counterdie and patrix are provided with at its longitudinally two ends be used to supporting described fixed axis to form the holddown groove of described die cavity.
2. an antenna house moulding process, is characterized in that comprising the steps:
(1) preparation is suitable for filling at least the sheet material that being used to form of upper cover die cavity as claimed in claim 1 has the upper cover of hollow material-structure, with being suitable for, fill at least the sheet material that being used to form of lower cover die cavity as claimed in claim 1 has the lower cover of closely knit material-structure, sheet material and resin prepreg are shaped to the prepreg sheet material;
(2) preparation described mould by it preheating of heating, detect described mold temperature until its while reaching preset value, corresponding upper cover die cavity and lower cover die cavity, be attached to corresponding prepreg sheet material on the relevant position of core rod;
(3) will be attached with core rod and counterdie and the Ccope closing machine of described prepreg sheet material, so that patrix and counterdie closure are to implement mold pressing, and mould is incubated, by mold pressing and insulation, make described upper cover have the hollow material-structure, make described lower cover have closely knit material-structure;
(4) after the insulation of Preset Time length, in type antenna house is unloaded in the demoulding.
3. antenna house moulding process according to claim 2, is characterized in that, in described step (1), the different piece of the sheet material with hollow material-structure of employing monolithic is used as the sheet material of described upper cover and lower cover.
4. antenna house moulding process according to claim 3, is characterized in that, it is that the stock cutting obtains that the sheet material with hollow material-structure of described monolithic adopts the glass fibre hollow fabric.
5. antenna house moulding process according to claim 3, it is characterized in that, in described step (1), described lower cover also adopts the sheet material with hollow material-structure of one or more auxiliary sheet material with hollow material and described monolithic stacked, and by compression molding, is the lower cover with closely knit material-structure in step (3).
6. antenna house moulding process according to claim 5, is characterized in that, described auxiliary sheet material adopt the glass fibre hollow fabric or for the simple glass fiber cloth be that the stock cutting obtains.
7. antenna house moulding process according to claim 2, it is characterized in that, in described step (4), its knockout course is: separate upper die and lower die, take out the antenna house of core rod and upper formation thereof, one end of core rod longitudinally is fixed, adopted frock clamp to eject this antenna house along the other end of described core rod longitudinally.
8. an antenna house, be integrated tubular structure, it is characterized in that, it be take an illusory vertical section and as boundary, comprises the upper cover with hollow material-structure and the lower cover with closely knit material-structure, and described upper cover and lower cover Integral mold are molded.
9. antenna house according to claim 8, is characterized in that, described upper cover comprises the glass fibre hollow fabric of one deck through resin prepreg, and described lower cover comprises multilayer molded glass fibre hollow fabric after resin prepreg.
10. antenna house according to claim 8, it is characterized in that, described upper cover comprises the glass fibre hollow fabric of one deck through resin prepreg, and described lower cover comprises that one deck is through glass fibre hollow fabric molded after resin prepreg and one deck molded simple glass fiber cloth after resin prepreg at least.
11. according to the described antenna house of claim 9 or 10, it is characterized in that, the layer made by the glass fibre hollow fabric of described upper cover and lower cover is integrated sheet material on structure.
12. according to the described antenna house of any one in claim 9 to 10, it is characterized in that, described antenna house is obtained by moulding process preparation as claimed in claim 2.
13. antenna, have the metallic reflection plate and be arranged on the radiating element on the metallic reflection plate, it is characterized in that, this antenna also has antenna house as described as any one in claim 8 to 12, and the metallic reflection plate of described antenna is placed in the formed tubular of described antenna house inner space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310280032.7A CN103407018B (en) | 2013-07-04 | 2013-07-04 | Antenna and antenna cover thereof as well as mould and forming process of antenna cover |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310280032.7A CN103407018B (en) | 2013-07-04 | 2013-07-04 | Antenna and antenna cover thereof as well as mould and forming process of antenna cover |
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| CN103407018A true CN103407018A (en) | 2013-11-27 |
| CN103407018B CN103407018B (en) | 2017-02-08 |
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| CN103715502A (en) * | 2013-12-19 | 2014-04-09 | 中材科技股份有限公司 | High-wave transmission hollow-structure radome |
| CN107453018A (en) * | 2016-05-31 | 2017-12-08 | 洛阳尖端技术研究院 | Super-material antenna and its forming method |
| CN107565215A (en) * | 2016-07-01 | 2018-01-09 | 陕西飞机工业（集团）有限公司 | A kind of airborne antenna cover structure |
| CN109353031A (en) * | 2018-11-19 | 2019-02-19 | 苏州银禧新能源复合材料有限公司 | The preparation method of battery box cover |
| CN110614744A (en) * | 2018-06-19 | 2019-12-27 | 旭化成株式会社 | Method for producing molded article, and mold for resin molding |
| WO2022116617A1 (en) | 2020-12-04 | 2022-06-09 | 京信通信技术(广州)有限公司 | Antenna and radome therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103715502A (en) * | 2013-12-19 | 2014-04-09 | 中材科技股份有限公司 | High-wave transmission hollow-structure radome |
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| CN110614744A (en) * | 2018-06-19 | 2019-12-27 | 旭化成株式会社 | Method for producing molded article, and mold for resin molding |
| CN109353031A (en) * | 2018-11-19 | 2019-02-19 | 苏州银禧新能源复合材料有限公司 | The preparation method of battery box cover |
| WO2022116617A1 (en) | 2020-12-04 | 2022-06-09 | 京信通信技术(广州)有限公司 | Antenna and radome therefor |
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