KR101610713B1 - hybrid antenna for satellite communication and manufacturing method the antenna - Google Patents

hybrid antenna for satellite communication and manufacturing method the antenna Download PDF

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Publication number
KR101610713B1
KR101610713B1 KR1020150109354A KR20150109354A KR101610713B1 KR 101610713 B1 KR101610713 B1 KR 101610713B1 KR 1020150109354 A KR1020150109354 A KR 1020150109354A KR 20150109354 A KR20150109354 A KR 20150109354A KR 101610713 B1 KR101610713 B1 KR 101610713B1
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KR
South Korea
Prior art keywords
reflection plate
back surface
reflector
antenna
plate
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Application number
KR1020150109354A
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Korean (ko)
Inventor
조정표
김엽
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주식회사 제이에프코리아
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave

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  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)

Abstract

The present invention provides a high precision hybrid antenna for satellite communications. The high precision hybrid antenna comprises: a plurality of reflective metal plates formed in a rounded fan shape, and connected with each other to constitute a semispherical or dished shape; an epoxy adhering unit adhered on a rear surface of the reflective plate; a coupling angle disposed on any one part on the rear surface of the reflective plate, and fixed on the reflective plate by the epoxy adhering unit; and a fiber reinforced composite material unit obtained by disposing an adhesive film on at least a part of the coupling angle or the rear surface of the reflective plate, laminating a plurality of prepregs, and heating and pressing the same at vacuum so as to make the coupling angle molded and integrated with the reflective plate. Accordingly, molding with respect to a composite round-shape reflective plate may be accurately performed, and a corresponding state may be stably maintained. Moreover, each coupling angle for coupling with a support frame may be stably fixed on a rear surface of a reflective plate even without using a bolt.

Description

TECHNICAL FIELD [0001] The present invention relates to a high-precision hybrid antenna for satellite communication,

The present invention relates to an antenna for satellite communication, and more particularly, to an antenna for satellite communication, which can accurately form a complex round-shaped reflection plate constituting an antenna, can be stably maintained in a corresponding state, The present invention relates to a high-precision hybrid antenna for satellite communication and a method of manufacturing the same, and more particularly, to a high-precision hybrid antenna for satellite communication according to a new type in which assembly angles can be manufactured integrally.

2. Description of the Related Art Generally, satellite communication is a communication service technology for exchanging various information data while communicating with a communication satellite (artificial satellite) through an antenna of an earth station. At this time, To another communication satellite or to an antenna of another earth station.

The earth station antenna used in the satellite communication is provided in various shapes such as a Cassegrain antenna, a helical antenna, a parabolic antenna, and a horn antenna according to functions and shapes. Typically, a parabolic antenna or a cassette antenna, Antennas are mainly used. In this regard, it is as disclosed in Published Unexamined Patent Application No. 10-2008-0059961, Registration No. 10-0678570, Registration No. 10-0561630, and the like.

The dish-type satellite communication antenna includes a plurality of curved reflecting plates coupled to each other to form a hemispherical or saucer shape. A plurality of frames for stably supporting each reflector are provided on the rear surface of the satellite communication antenna And is fixed while being bolted to each other.

However, in the conventional antenna for the hypothetical communication described above, each reflector plate is manufactured by bending a flat plate of a metal material (mainly aluminum) into a plurality of stages for excellent electromagnetic wave reflection. However, There is a problem that it is difficult to precisely form each bending angle.

In addition, a plurality of support frames for stably supporting the reflection antennas of the satellite communication antenna are provided on the rear surface of the reflection antennas. In the case of the coupling angles for coupling with the support frames, As a result, the overall assembly time is long. Also, even if the bolts are removed from each bolting part, since the antenna for satellite communication is located at a very high position, There is a problem that it is extremely difficult.

In addition, there has been a problem that when the above-described conventional satellite communication antenna has a phenomenon such as accumulation of snow or water on the surface thereof, transmission and reception of radio waves which are not precisely occurred have occurred. To prevent this, The installation of such a heater has to be carried out in the course of performing the coupling between the corresponding satellite communication antenna and each supporting frame so that the entire assembling operation is more difficult and it takes a long period of time .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a composite round reflector which can be accurately formed and maintained in a stable state, Also, it is another object of the present invention to provide a high-precision hybrid antenna for satellite communication and a method of manufacturing the same, in which assembly angles can be integrally manufactured for coupling with a support frame.

In order to achieve the above object, there is provided a high-precision hybrid antenna for satellite communication according to the present invention, comprising: a reflection plate made of metal and formed in a hemispherical shape or a dish shape by being connected to each other while being provided in a rounded sector shape; An epoxy adhesive bonded to a back surface of the reflector; A coupling angle which is positioned on any one of the back surface of the reflection plate and is fixed to the reflection plate by the epoxy bonding portion; A fiber-reinforced composite material part which is laminated with a plurality of prepregs by placing an adhesive film on at least a part of the coupling angle and the rear surface of the reflection plate, and is molded so that the coupling angle forms an integral part with the reflection plate through heating and pressing in a vacuum state; .

A plurality of foam forming parts fixed to the reflector are spaced apart from each other by a predetermined thickness between the back surface of the reflection plate and the fiber reinforced composite part, And a heat ray is generated so as to provide heat of high temperature.

The coupling angle is formed along the longitudinal direction of the reflection plate and fixed to the back surface of the reflection plate along the longitudinal direction of the reflection plate.

In order to achieve the above-mentioned object, a method of manufacturing a high-precision hybrid antenna for satellite communication according to the present invention comprises the steps of: forming a reflector plate by cutting a metal plate into a fan shape and then bending it round; An epoxy bonding step of bonding the epoxy bonding portion to the back surface of the reflection plate; An angle attaching step of attaching a joining angle to any one of the epoxy bonding parts of the back surface of the reflection plate; A foam attaching step of attaching a plurality of foam forming parts to the remaining part of the epoxy bonding part of the back surface of the reflector in a state of being spaced apart; A hot line disposing step of disposing a hot line between the foam forming units; A prepreg lamination step of attaching an adhesive film to the back surface of each foam forming part and the surface of the connecting angle positioned on the back surface of the reflection plate, and laminating a plurality of prepregs on the adhesive film; And a shaping step in which the front surface of the reflection plate is brought into close contact with the surface of the molding die, and the molding is performed while heating and pressing the reflector and the plurality of prepregs in a vacuum state by blocking the prepregs from the external environment.

Here, in the reflector manufacturing step, the reflector is formed with a curvature of 90 to 95% of the round curvature to be finally formed.

As described above, the high-precision hybrid antenna for satellite communication according to the present invention enables the coupling between each reflection plate and the coupling angle to be achieved through the fixing by the epoxy adhesive and the fixing by the fiber reinforced composite member, So that it is possible to shorten the working time and to prevent the structural deformation of the reflector due to the part for bolting.

Particularly, the high-precision hybrid antenna for satellite communication according to the present invention has the effect of precisely forming a composite round structure of each reflector using a molding metal mold and maintaining the fiber-reinforced composite material in a corresponding state .

FIG. 1 is a perspective view illustrating a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention,
FIG. 2 is a perspective view showing the state of the high-precision hybrid antenna for satellite communication according to the embodiment of the present invention,
3 is a cross-sectional view illustrating a reflector structure of a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention.
4 is a flowchart illustrating a method of manufacturing a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention.
5 to 12 are diagrams for explaining a manufacturing process of a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a high-precision hybrid antenna for satellite communication and a method of manufacturing the same will be described with reference to FIGS. 1 to 12.

FIG. 1 is a perspective view illustrating a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating a reflector structure of a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention. Referring to FIG.

As shown in these drawings, a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention includes a plurality of reflection plates 100, an epoxy bonding portion 200, a coupling angle 300 and a fiber reinforced composite portion 400 So that the composite round-shaped reflection plate 100 can be accurately formed, and the maintenance of the composite round-shaped reflection plate 100 can be stably performed, and the bolting can be minimized.

This will be described in more detail below for each configuration.

First, the reflection plate 100 is a portion for reflection of a communication radio wave while forming an external shape of a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention.

The reflection plate 100 is made of a metal material, and preferably made of aluminum.

Particularly, the reflection plate 100 is formed into a fan shape and is bent so as to have a complex round, so that when the plurality of reflection plates 100 are connected to each other, a hemispherical or dish-like antenna shape is formed.

Here, the composite round of each reflector 100 refers to a continuous round in which curvature radii are made different from each other at a portion other than a single round structure having the same curvature at all portions, and the curvature of each portion of the composite round The radius depends on the overall size and diameter of the antenna.

Next, the epoxy bonding portion 200 is attached to the back surface of the reflector 100 to fix the coupling angle 300 to be described later and to secure the fiber-reinforced composite portion 400 more firmly.

In the embodiment of the present invention, the joining angle 300 is formed on the reflector 100 by using the epoxy adhesive 200. However, in the present embodiment, So that the number of bolts can be minimized.

The epoxy bonding portion 200 is made of an epoxy adhesive formed of a thin film, and is attached so as to cover the entire back surface of the reflective plate 1000.

Next, the coupling angle 300 is a portion for fastening coupling with the support frame 700.

The coupling angle 300 is formed of an angle or a section of a multi-stepped metal structure. In the embodiment of the present invention, the joining angle 300 is fixed to the back surface of the reflection plate 310, and the joining angle of the joining angle 300 is changed from the joining angle 310 to the joining angle 300, (320).

Particularly, it is preferable that the coupling angle 300 is formed to be long along the longitudinal direction of the reflector 100 while being positioned at an end of one side of the rear surface of the reflector 100. This is because it is possible to easily form the fiber reinforced composite material 400 on the back surface of the reflection plate 100 and to fix the position of the coupling angle 300 with respect to all the reflection plates 100, It is for this reason.

In addition, the coupling angle 300 is firmly fixed to the reflector 100 by the epoxy adhesive 200 and the fiber-reinforced composite material 400 to be described later.

The fiber reinforced composite material part 400 integrates the coupling angle 300 with the reflection plate 100 while protecting the back surface of the reflection plate 100 from the external environment, Is always maintained in the correct state.

The fiber-reinforced composite material part 400 is formed by sequentially laminating a plurality of prepregs 410 made of glass fiber impregnated with an epoxy resin, and then curing the resin by heating and pressing.

Particularly, in the embodiment of the present invention, the fiber-reinforced composite part 400 includes an adhesive film 420 on the back surface of the reflection plate 100 and the surface of the attachment end 310 of the coupling angle 300, (410) are stacked and then heated and pressurized in a vacuum state.

That is, through the above-described process, the fiber-reinforced composite member 400 is formed so as to completely cover the back surface of the reflection plate 100 so that the back surface of the reflection plate 100 can be protected from the external environment, So that the coupling between the reflection plate 300 and the reflection plate 100 can be made more firmly.

In the exemplary embodiment of the present invention, a plurality of (e.g., a plurality of) epoxy adhesives 200 may be formed between the back surface of the reflector 100 and the fiber- It is further provided that the foam forming part 500 is spaced apart from each other and at least a part of the space between the foam forming parts 500 is provided with a heat ray 600 that generates heat to provide a high temperature heat.

That is, through the provision of the heat line 600, it is possible to smoothly remove even if winter snow is piled up on the surface of the antenna, sexual abuse or ice is generated.

Here, each of the foam forming units 500 is configured to prevent the heat rays 600 from directly abutting against the fiber-reinforced composite member 400. That is, considering that the heat line 600 generates heat at a high temperature, when the heat line 600 is installed to directly contact the fiber-reinforced composite part 400, the fiber-reinforced composite part 400 The hot wire 600 is directly abutted against the fiber-reinforced composite portion 400 through the provision of a thicker foam-forming portion 500, which is thicker than the thickness of the hot-wire 600, And the like.

In addition, the foam forming unit 500 also prevents the occurrence of abnormal protrusions due to the heat rays 600, so that the entire back surface of the reflection plate 100 has the same height.

It is preferable that the foam forming part 500 is formed in a form having heat resistance.

Hereinafter, a method of manufacturing a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention will be described in detail with reference to the flowchart of FIG. 4 and the state diagram of FIG. 5 to FIG.

First, a reflection plate manufacturing step (S100) for manufacturing a reflection plate 100 for manufacturing a high-precision hybrid antenna for satellite communication according to an embodiment of the present invention is performed.

The reflection plate 100 is formed by cutting a flat plate of a metallic material into a fan shape and then bending it to be rounded.

Particularly, in the embodiment of the present invention, it is suggested that the round of the reflection plate 100 manufactured through the reflection plate manufacturing step (S100) is formed at a curvature between 90 and 95% of the round curvature to be finally formed. This is for the purpose of precisely and precisely forming a composite round for each part of the reflection plate in a final molding process to be described later.

In addition, the reflection plate 100 is formed by a pressing operation using a general banding die.

5 and 6, the reflection plate 100 manufactured through the above-described process is placed so that its front surface is in close contact with the surface of the molding die 10.

After the reflective plate 100 is placed on the surface of the molding die 10, an epoxy bonding step (S200) of bonding the epoxy bonding portion 200 to the back surface of the reflective plate 100 is performed.

In the epoxy bonding step (S200), the epoxy bonding part (200) is attached so as to cover the entire back surface of the reflective plate (100). This is as shown in Figs. 6 and 7 attached hereto.

Then, an angle attaching step (S300) for attaching the engaging angle 300 to one side of the epoxy bonding portion 200 on the back surface of the reflection plate 100 is performed.

At this time, the coupling angle 300 is fixed to the back surface of the reflection plate 100 by attaching the coupling angle 300 to the epoxy bonding portion 200 in a state where the coupling angle 300 is long along the longitudinal direction of the reflection plate 100. This is as shown in FIGS. 7 and 8 attached hereto.

Subsequently, a foam attaching step S400 for attaching and fixing a plurality of foam forming parts 500 to the back surface of the reflection plate 100 is performed.

In the foam attaching step S400, each of the foam forming parts 500 is disposed so as not to overlap with the mounting part of the coupling angle 300 among the epoxy bonding parts 200 on the back surface of the reflection plate 100, And the portions 500 are spaced apart from each other. This is as shown in Figs. 8 and 9 attached hereto.

When the attachment of each of the foam forming units 500 is completed, a heat line placing step S500 is performed to place the heat lines 600 between the foam forming units 500 separated from each other. This is as shown in Fig. 9 attached hereto.

Of course, the heat line 600 provided in the heat line arranging step (S500) exposes at least one end of the heat ray 600 from the back surface of the reflector 100 to the outside so that external power can be supplied.

When the hot wire 600 is disposed, the adhesive film 420 is attached to the back surface of the foam forming part 500 and the surface of the joining angle 300 positioned on the back surface of the reflector 100, A prepreg lamination step (S600) of laminating a plurality of prepregs (410) on the film (420) is performed.

The prepreg 410 is made of glass fiber impregnated with an epoxy resin and is sequentially laminated to a predetermined thickness. This is as shown in Figs. 9 and 10 attached hereto.

At this time, in the case of the coupling angle 300, the prepreg 410 is laminated only on the attachment end 310 thereof so that the attachment end 310 can be firmly fixed, So that the connection with the support frame 700 can be smoothly performed.

When the attachment of the respective components to the back surface of the reflection plate 100 through the above-described processes is completed, a molding step for curing the laminated prepregs 410 is performed.

In the molding step S700, the reflection plate 100, the plurality of prepregs 410, and the coupling angle 300, which are sequentially attached to or laminated on the surface of the molding die 10, The prepreg 410 is wrapped with a vacuum bag 20 and then heated and pressed while the inside of the vacuum bag 20 is evacuated to form one fiber reinforced composite material part 400. This is as shown in Figs. 11 and 12 attached hereto.

When the reflector 100 is manufactured by the above-described processes, the reflector plates manufactured through the process are combined with the plurality of support frames 700, A hybrid antenna is completed, which is shown in Fig. 2 attached hereto.

At this time, the support frames 700 are arranged so as to connect the coupling angles 300 of the reflection plates 100, and the coupling angles 300 of the reflection plates 100 can be coupled with each other through bolting .

As described above, in the high-precision hybrid antenna for satellite communication according to the embodiment of the present invention, the coupling between each reflection plate 100 and the coupling angle 300 is accomplished through adhesive fixing using an epoxy adhesive and additional fixing by the fiber- It is possible to drastically reduce the area to be fastened with the bolt as compared with the conventional bolting method and to shorten the working time and to prevent the structural deformation of the reflector 100 due to the portion for bolting .

Particularly, the high-precision hybrid antenna for satellite communication according to the embodiment of the present invention precisely forms the composite round structure of each reflector 100 using the molding die 10, State can be maintained. That is, since the fiber reinforced composite material part 400 prevents the springback phenomenon of the bent round part due to the reflection plate 100 made of a metal material (particularly, aluminum), the bending angle of each part of the reflection plate 100 is precise Therefore, it is possible to improve the performance of the satellite communication antenna.

10. Mold for molding 20. Vacant blank
100. Reflector 200. Epoxy adhesive
300. Joining angle 310. Mounting stage
320. Bending stage 400. Fiber reinforced composite material part
410. prepreg 420. adhesive film
500. Foam forming part 600. Heat line
700. Support frame

Claims (5)

A reflection plate made of metal and formed in a hemispherical or saucer shape by being connected to each other while being provided in a plurality of rounded fan-shaped shapes;
An epoxy adhesive bonded to a back surface of the reflector;
A coupling angle which is positioned on any one of the back surface of the reflection plate and is fixed to the reflection plate by the epoxy bonding portion;
A fiber-reinforced composite material part which is laminated with a plurality of prepregs by placing an adhesive film on at least a part of the coupling angle and the rear surface of the reflection plate, and is molded so that the coupling angle forms an integral part with the reflection plate through heating and pressing in a vacuum state; And a high-precision hybrid antenna for satellite communication. The method according to claim 1,
A plurality of foam molding parts fixed to the reflection plate by the epoxy bonding part are spaced apart from each other while being formed to have a constant thickness between the back surface of the reflection plate and the fiber reinforced composite part,
Wherein at least a part of each of the foam forming parts is provided with a heat ray that generates heat to provide high temperature heat. The method according to claim 1,
Wherein the coupling angle is formed along the longitudinal direction of the reflection plate and fixed to the back surface of the reflection plate along the longitudinal direction of the reflection plate. A reflector manufacturing step of forming a reflector by cutting a flat metal plate into a fan shape and then folding the plate into a round shape;
An epoxy bonding step of bonding the epoxy bonding portion to the back surface of the reflection plate;
An angle attaching step of attaching a joining angle to any one of the epoxy bonding parts of the back surface of the reflection plate;
A foam attaching step of attaching a plurality of foam forming parts to the remaining part of the epoxy bonding part of the back surface of the reflector in a state of being spaced apart;
A hot line disposing step of disposing a hot line between the foam forming units;
A prepreg lamination step of attaching an adhesive film to the back surface of each foam forming part and the surface of the connecting angle positioned on the back surface of the reflection plate, and laminating a plurality of prepregs on the adhesive film;
And a shaping step of forming the front surface of the reflector plate in close contact with the surface of the molding die and molding the reflector plate and the plurality of prepregs while heating and pressurizing them in a state of being cut off from the external environment and being vacuumed. A method of manufacturing a high - precision hybrid antenna for communication. 5. The method of claim 4,
Wherein the reflection plate is formed at a curvature of 90 to 95% of a round curvature to be finally formed in the reflection plate manufacturing step.
KR1020150109354A 2015-08-03 2015-08-03 hybrid antenna for satellite communication and manufacturing method the antenna KR101610713B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102087814B1 (en) 2020-01-14 2020-03-11 주식회사 대륙정공 Reflective plate press molding method using prepreg of FRP as a material sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102087814B1 (en) 2020-01-14 2020-03-11 주식회사 대륙정공 Reflective plate press molding method using prepreg of FRP as a material sheet

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