CN210040553U - Antenna housing and antenna system - Google Patents
Antenna housing and antenna system Download PDFInfo
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- CN210040553U CN210040553U CN201921111809.6U CN201921111809U CN210040553U CN 210040553 U CN210040553 U CN 210040553U CN 201921111809 U CN201921111809 U CN 201921111809U CN 210040553 U CN210040553 U CN 210040553U
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Abstract
The utility model relates to an antenna house and antenna system. The main technical scheme adopted is as follows: the radome comprises a radome top wall and a radome side wall; the hood side wall is connected with the edge of the hood top wall; wherein the hood top wall comprises a plurality of layers of fiberglass cloth and at least one layer of paper-based honeycomb; wherein the paper-based honeycomb structure is used as a core layer and is sandwiched between a plurality of layers of glass fiber cloth. An antenna system comprises an antenna and the antenna housing. The utility model discloses mainly used improves wave transmissivity, the control wave lamella distortion of antenna house and diminishes, guarantees that the electrical performance is stable, alleviates the weight of antenna house, reduces the volume of antenna, guarantees again simultaneously that the antenna house has sufficient structural strength and rigidity.
Description
Technical Field
The utility model relates to a military microwave electronic technology field especially relates to an antenna house and antenna system.
Background
The radome is a structural member that protects the antenna system from wind, rain, ice, snow, sand, dust, solar radiation, and the like. However, the radome absorbs and reflects the radiated wave of the antenna to some extent, changes the free space energy distribution of the antenna, and affects the electrical performance of the antenna to some extent. Therefore, the antenna cover needs to have good electromagnetic wave penetration characteristics, small lobe distortion, and mechanical properties capable of withstanding the action of the external harsh environment, so that the system operation performance of the antenna is stable and reliable, and the abrasion, corrosion, and aging of the antenna system can be reduced, thereby prolonging the service life of the antenna system.
The dielectric properties (mainly referred to as dielectric constant and dielectric loss tangent) of the radome material are the core properties of the radome material. The dielectric loss tangent represents the proportion of the material that converts electromagnetic energy transmitted through the material into heat energy, and the higher the proportion, the larger the loss of the electromagnetic energy, and the more remarkable the temperature rise of the material, further causing the decline of the dielectric property and the mechanical property. The dielectric constant has a negative correlation with the wave transmissivity of the material. Therefore, on the premise of satisfying a certain mechanical property, the dielectric constant and the dielectric loss of the material are generally required to be as small as possible.
The mechanical property of the antenna housing material generally requires that the antenna housing material can resist more than 8-level wind (wind speed 25 m/S). The performance of the material is required to have no obvious change under the environmental conditions of high temperature, low temperature, alternating damp heat and the like, and the index requirement still needs to be met.
In the prior art, the shape of the radome is mainly a truncated spherical, hemispherical, cylindrical and other revolution body shape; the antenna housing material is made of materials with low dielectric constant and loss tangent and high mechanical strength, such as glass fiber reinforced plastics, epoxy resin, high molecular polymer and the like; the structure is mostly uniform single-wall structure, sandwich structure, space skeleton structure and the like; the design of the thickness of the cover wall gives consideration to the factors of working wavelength, environmental conditions, performance of the used material on electricity and structure and the like, and the thickness of the cover wall is mostly made to be thicker than 4-5 mm under the condition that the antenna is protected from being influenced by the external environment. The antenna housing is large in power transmission loss, large in lobe distortion, large in size, heavy in weight and inconvenient to transport due to the design of the existing antenna housing.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an antenna house and antenna system, main aim at improves the wave transmissivity of antenna house, control lobe distortion, alleviates the weight of antenna house.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
in one aspect, an embodiment of the present invention provides an antenna housing, wherein the antenna housing includes:
a hood top wall;
a hood side wall connected with an edge of the hood top wall;
wherein the hood top wall comprises a plurality of layers of glass fiber cloth and at least one layer of paper honeycomb; wherein the paper-based honeycomb is used as a core layer and is sandwiched between a plurality of layers of glass fiber cloth.
The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
Preferably, the radome is a rectangular radome body.
Preferably, a cross section of the hood top wall extending along the first direction is arc-shaped; and/or the hood top wall is arcuate in cross-section extending in a second direction; wherein the first direction and the second direction are two different directions.
Preferably, when the radome is a rectangular radome body, the first direction is an extending direction of a long side of the rectangle, and the second direction is an extending direction of a short side of the rectangle. Preferably, when the cross section of the hood top wall extending along the first direction is in a first arc shape, the curvature of the first arc shape is 1:36461-1: 23076mm-1(ii) a When the cross section of the cover top wall extending along the second direction is in a second arc shape, the curvature of the second arc shape is 1: 7000-1: 4432mm-1。
Preferably, the glass fiber cloth is alkali-free glass fiber cloth; and/or
The paper-based honeycomb is aramid fiber paper honeycomb; and/or
The side wall of the cover is made of polyester glass fiber reinforced plastics; and/or
The hood top wall and the hood side wall are bonded by resin.
Preferably, the thickness of the hood top wall is 2.4-2.8 mm; and/or the height of the hood side wall is 28-32 mm; and/or the thickness of the side wall of the cover is 7-9 mm.
Preferably, the height of the antenna housing is 36-39 mm; and/or the length of the radome is 1.1-1.3 m; and/or the width of the radome is 0.4-0.6 m.
Preferably, the radome is a radome.
Preferably, a plurality of fastener holes are provided on the side wall of the cover to fix the antenna.
On the other hand, the embodiment of the present invention further provides an antenna system, wherein the antenna system includes an antenna and the antenna housing of any one of the above.
Compared with the prior art, the utility model discloses an antenna house has following beneficial effect at least:
1. the antenna housing provided by the embodiment of the utility model has the advantages that through the unique structure and appearance design, the wave-transparent top wall structure is uniform and has small thickness, the distortion of the control lobe is small, and the electrical performance of the antenna housing is stable; the top wall of the cover is set to be of an alkali-free glass fiber cloth sandwich aramid fiber paper honeycomb structure, so that on one hand, the aramid fiber paper honeycomb is small in dielectric constant and strong in wave permeability; on the other hand, the alkali-free glass fiber cloth has good chemical stability, electrical insulation and strength, the content of the alkali-free glass fiber R2O is less than 0.8 percent, and the alkali-free glass fiber cloth has good chemical stability, electrical insulation performance and strength; in yet another aspect, the structure of the fiberglass cloth sandwich paper-based honeycomb is lighter in weight. Therefore, the radome provided by the embodiment can improve the wave transmission rate of the radome so as to reduce power transmission loss, control the small distortion of the wave lobe, reduce the weight of the radome, and ensure the strength of the radome.
2. The antenna housing provided by the embodiment of the utility model has the advantages that on one hand, the shape of the antenna housing is rectangular, so that the height of the antenna housing can be made very small, the occupied volume and space of the antenna are small, and the whole antenna system has light weight and is convenient to transport; on the other hand, the shape of the top wall of the radome is designed into a bidirectional arc-shaped small-curvature structure, so that the radome has a good structural strength, can bear a load of more than 30Kg & f, and has a wind resistance of 60 m/S.
3. The thickness of the top wall of the radome provided by the embodiment of the utility model is 2.4-2.8mm, preferably 2.6 mm; the height of the side wall of the cover is only about 30mm, the side wall is made of polyester glass fiber reinforced plastics, and the thickness of the side wall is 7-9mm, preferably 8 mm. The overall dimension of the whole antenna housing is about 1.2 multiplied by 0.5 multiplied by 0.03(m), and the weight is only about 2 Kg; therefore, the embodiment of the utility model provides an antenna house's volume, weight are little, the transportation is convenient.
4. The embodiment of the utility model provides an antenna house is workable from the design of technology angle, and structure preparation level is clear, volume space is compact, low in manufacturing cost, and with the simple to operate of antenna (through the screw installation can).
To sum up, the utility model provides an antenna house passes through the design of material, appearance, size for the power transmission loss of antenna house < 0.2dB (wave transmissivity height), beam pointing error < 0.1 °, beam broadening < 1 °, standing wave coefficient change < 5 °, wind-resistant ability 60m/S do not destroy, ambient temperature-50 ~ 80 ℃, relative humidity 0 ~ 100%, life > 20 years, light in weight, structural strength and rigidity are high, low in manufacturing cost, installation and maintenance are convenient.
On the other hand, the utility model also provides an antenna system; wherein, because this antenna system includes foretell antenna house, consequently, the utility model provides an antenna system has any beneficial effect of above-mentioned, and it is here unnecessary a repeated description.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an antenna housing according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of an antenna housing according to an embodiment of the present invention;
FIG. 3 is an elevation view at section D-D of FIG. 2;
FIG. 4 is an elevation view at section F-F of FIG. 2;
fig. 5 is a schematic view of another antenna housing according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an antenna system according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments, in order to explain the detailed embodiments, structures, features and effects of the present invention. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Example 1
As shown in fig. 1 and 5, the present embodiment provides a radome in which the radome includes a radome top wall 11 and a radome side wall 12. Wherein the hood side walls 12 are connected to the edges of the hood top wall 11. Wherein the hood top wall 11 comprises a plurality of layers of fiberglass cloth and at least one layer of paper-based honeycomb 111; wherein the paper-based honeycomb 111 is used as a core layer and is sandwiched between a plurality of layers of glass fiber cloth.
Preferably, the glass fiber cloth is alkali-free glass fiber cloth. The content of R2O in the alkali-free glass fiber is less than 0.8%, and the alkali-free glass fiber has good chemical stability, electrical insulation performance and strength.
Preferably, the paper-based honeycomb 111 in this embodiment is an aramid paper honeycomb; the aramid fiber paper honeycomb core has small dielectric constant and strong wave permeability.
According to the antenna housing provided by the embodiment, the top wall of the housing is set to be of the structure of the alkali-free glass fiber cloth sandwich aramid fiber paper honeycomb, so that on one hand, the aramid fiber paper honeycomb is small in dielectric constant and strong in wave permeability; on the other hand, the alkali-free glass fiber has good chemical stability, electrical insulation performance and strength; in yet another aspect, the fiberglass cloth sandwich paper-based honeycomb structure is relatively lightweight. Therefore, the antenna housing provided by the embodiment can improve the wave-transmitting rate of the antenna housing so as to reduce power transmission loss and the weight of the antenna housing, and can ensure the strength of the antenna housing.
In addition, compared with solid glass fiber cloth, the dielectric constant of the sandwich aramid paper honeycomb structure of the alkali-free glass fiber cloth is reduced, and the dielectric property requirement of the high-performance radome is met. The aramid paper honeycomb shows excellent dielectric properties under various frequencies, and has low density, high strength, high modulus and high impact resistance.
Preferably, the material of the cover side wall 12 is polyester glass fiber reinforced plastics; further, the material of the hood side wall 12 is polyester glass fiber reinforced plastic with glass fiber reinforced unsaturated polyester and epoxy resin as matrix and glass fiber as reinforcement.
Preferably, the housing sidewall 12 defines a plurality of fastener holes 121 for securing the antenna.
Example 2
Preferably, the present embodiment provides an antenna cover, and compared with the previous embodiment, in order to further reduce the volume and weight of the antenna cover and improve the structural strength of the antenna cover, as shown in fig. 1 to 4, the following design is further performed:
on one hand, the radome 1 of the present embodiment is a rectangular cover body (i.e., the radome 1 has four cover sidewalls, and the four cover sidewalls enclose a rectangular cylinder). Here, in this embodiment, the shape of the antenna housing is designed to be "rectangular", so that the height of the antenna housing can be made very small, the occupied volume and space of the antenna are small, and the whole antenna system is light in weight and convenient to transport.
On the other hand, the embodiment further designs the cover top wall 11 into an arc shape, as follows: the hood top wall 11 has a first arc-shaped cross section extending in the first direction; and/or a cross-section of the hood top wall extending along the second direction has a second arc shape; wherein the first direction and the second direction are two different directions. Preferably, when the antenna cover is a rectangular cover body, the first direction is an extending direction of a long side of the rectangle, and the second direction is an extending direction of a short side of the rectangle. The curvature of the first arc is 1:36461-1: 23076mm-1(ii) a Curve of the second arcThe ratio is 1: 7000-1: 4432mm-1。
Wherein, the optimal scheme is as follows: the cross section of the hood top wall 11 extending in the first direction and the cross section of the hood top wall 11 extending in the second direction are each provided in an arc shape; that is, the shape of the cover top wall 11 is designed to have a small curvature in a bidirectional arc shape. Here, the present embodiment is constructed by shaping the hood top wall 11 to have a small curvature (1:36461-1:4432 mm) in a bidirectional arc shape-1) The design forms a bidirectional gentle arc structure, so that the antenna housing can bear load of more than 30Kg & f.
According to the antenna housing provided by the embodiment, on one hand, the shape of the antenna housing is rectangular, so that the height of the antenna housing can be made very small, the occupied volume and space of an antenna are small, and the whole antenna system is light in weight and convenient to transport; on the other hand, the shape of the cover top wall is designed to be bidirectional arc-shaped with small curvature, so that a bidirectional slow arc-shaped structure is formed, the antenna cover has good structural strength and can bear load of more than 30Kg & f.
Example 3
Preferably, the present embodiment provides a radome, and compared with the above embodiments, the dimensions of the radome are further designed as follows, as shown in fig. 1 to 4:
in the present embodiment, the thickness of the hood top wall 11 is 2.4-2.8mm, preferably 2.6 mm. The height of the hood side wall 12 is 28-32mm, preferably 30 mm; the thickness of the hood side wall 12 is 7-9mm, preferably 8 mm.
Further, the height of the radome in the embodiment is 36-39mm, preferably 37 mm; the length of the antenna housing is 1.1-1.3m, preferably 1.2 m; the width of the radome is 0.4-0.6m, preferably 0.5 m.
Here, the thickness of the cover top wall of the radome of the present embodiment is 2.4-2.8mm, preferably 2.6 mm; the height of the four sides (the side walls of the cover) is only 30mm, the material is polyester glass fiber reinforced plastics, and the thickness is 7-9mm, and is preferably 8 mm. The whole antenna housing has the shape of about 1.2 multiplied by 0.5 multiplied by 0.03(m) and the weight of about 2 Kg; the transportation is convenient.
In addition, the radome according to the above embodiment is a radar radome.
In addition, the preparation method of the radome provided by the above embodiment is as follows: as shown in fig. 1 to 6, the cover top wall 11 of the first antenna cover 1 is formed by a vacuum bag pressing process, alkali-free glass fiber cloth with good electrical insulation is used as a material, the paper-based honeycomb 13 is sandwiched between a plurality of layers of alkali-free glass fiber cloth and connected into a whole, and the thickness of the cover top wall 11 of the antenna cover 1 is processed to be about 2.6 mm. Secondly, the cover side wall 12 of the antenna cover 1 is made of polyester glass fiber reinforced plastics which take glass fiber reinforced unsaturated polyester and epoxy resin as matrixes and take glass fiber as a reinforcement; the hood side wall 12 and the hood top wall 11 are bonded together by resin. Thirdly, a series of through holes (i.e., fastener holes 121) for mounting screws are processed on the cover side wall 12 of the radome 1 for mounting the radome 1 and the antenna 2.
Example 4
The present embodiment provides an antenna system; as shown in fig. 6, the antenna system of the present embodiment includes a radome 1 and an antenna 2. The radome 1 is the radome according to any one of embodiments 1 to 3.
Here, since the antenna system of the present embodiment includes the radome of any one of the embodiments, the present embodiment has the beneficial effects described in any one of the embodiments, and details thereof are not repeated herein.
As shown in fig. 6, the antenna cover 1 is fastened on the antenna 2, and the front surface of the antenna 2 is located inside the antenna cover and faces the inner surface of the cover top wall, and the back surface of the antenna 2 is located outside the antenna cover 1.
When the antenna 2 is provided with the transceiving module 3, the antenna 2 is reversely buckled on the ground, the outer surface of the cover top wall of the antenna cover 1 is grounded, the back surface of the antenna 2 faces upwards, the back surface of the antenna 2 presses the transceiving module 3 of 11Kg, the weight of the antenna is 20Kg, which is equivalent to the cover top wall bearing pressure of 31Kg & f of the antenna cover 1, and the cover top wall of the antenna cover 1 is not broken. After the antenna is turned over and placed right side by side, the radome 1 is inspected and found to have no permanent deformation.
To sum up, the utility model provides an antenna house and antenna system has following advantage:
1. high power transmission coefficient (high wave-transparent rate), small lobe distortion and stable electrical performance
The wave-transmitting top wall of the antenna housing adopts an interlayer aramid paper honeycomb structure with uniform structure and small thickness, and the aramid paper honeycomb material has small dielectric constant and strong wave-transmitting property; in addition, the thickness of the top wall of the cover is only about 2.6mm, the power transmission loss is less than 0.2dB, the beam pointing error is less than 0.1 degrees, the beam broadening is less than 1 degree, and the standing wave coefficient change is less than 5 degrees;
2. high structural strength and rigidity
The shape of the cover top wall of the antenna cover of the utility model adopts a bidirectional arc small curvature of 1:36461-1:4432mm-1The design is that a bidirectional gentle arc structure is formed, the load can be borne by more than 30Kg & f, and the wind resistance is 60m/S without damage. The antenna housing has long service life (the design life is twenty years);
3. light weight and small occupied space
The cover top wall of the antenna cover of the utility model is designed into a structure of an alkali-free glass fiber cloth sandwich paper honeycomb, and the thickness of the cover top wall is about 2.6 mm; the height of the four side edges (the side walls of the cover) is only 30mm, the material is polyester glass fiber reinforced plastics, and the thickness is about 8 mm. The whole antenna housing has the shape of about 1.2 multiplied by 0.5 multiplied by 0.03(m) and the weight of only 2 Kg; the transportation is convenient;
4. low manufacturing cost, convenient installation and easy maintenance
The antenna housing of the utility model is easy to process from the technical point of view, and the structure manufacturing level is clear; the volume and space of the finished product are compact, the overall dimension of the antenna housing is approximately 1.2 multiplied by 0.5 multiplied by 0.03(m), and the height is only about 3 cm; the manufacturing cost is low, only a fiber glass reinforced plastic simple mold needs to be manufactured firstly, then the inner surface of the simple mold is used as a cavity for forming the radome, the finished radome is produced by a vacuum bag pressing process, and the raw materials of the radome, namely the Chinese alkali-free glass fiber and aramid fiber paper honeycomb, are low in price; and finally, the antenna housing and the antenna are installed through screws, so that the installation is convenient.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. A radome, comprising:
a hood top wall;
a hood side wall connected with an edge of the hood top wall;
wherein the hood top wall comprises a plurality of layers of fiberglass cloth and at least one layer of paper-based honeycomb; wherein the paper-based honeycomb is used as a core layer and is sandwiched between a plurality of layers of glass fiber cloth.
2. The radome of claim 1, wherein the radome is a rectangular cover.
3. The radome of claim 1 or 2, wherein a cross-section of the radome top wall extending along the first direction has a first arc shape; and/or
A cross-section of the hood top wall extending along a second direction is in a second arc shape;
wherein the first direction and the second direction are two different directions.
4. The radome of claim 3, wherein when the radome is a rectangular cover, the first direction is an extending direction of a long side of the rectangle, and the second direction is an extending direction of a short side of the rectangle.
5. The radome of claim 3, wherein,
when the cross section of the cover top wall extending along the first direction is in a first arc shape, the curvature of the first arc shape is 1:36461-1: 23076mm-1；
When the cross section of the cover top wall extending along the second direction is in a second arc shape, the curvature of the second arc shape is 1: 7000-1: 4432mm-1。
6. The radome of claim 1, wherein,
the glass fiber cloth is alkali-free glass fiber cloth; and/or
The paper-based honeycomb is aramid fiber paper honeycomb; and/or
The side wall of the cover is made of polyester glass fiber reinforced plastics; and/or
The hood top wall and the hood side wall are bonded by resin.
7. The radome of any one of claims 1-2 and 4-6, wherein,
the thickness of the top wall of the cover is 2.4-2.8 mm; and/or
The height of the side wall of the cover is 28-32 mm; and/or
The thickness of the side wall of the cover is 7-9 mm.
8. The radome of claim 7, wherein,
the height of the antenna housing is 36-39 mm; and/or
The length of the antenna housing is 1.1-1.3 m; and/or
The width of the antenna housing is 0.4-0.6 m.
9. The radome of any one of claims 1-2, 4-6, 8, wherein the radome is a radar radome; and/or
A plurality of fastener holes are formed in the side wall of the cover and used for fixing the antenna.
10. An antenna system, characterized in that the antenna system comprises an antenna and a radome according to any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921111809.6U CN210040553U (en) | 2019-07-16 | 2019-07-16 | Antenna housing and antenna system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921111809.6U CN210040553U (en) | 2019-07-16 | 2019-07-16 | Antenna housing and antenna system |
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| CN210040553U true CN210040553U (en) | 2020-02-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394561A (en) * | 2021-06-10 | 2021-09-14 | 中国科学院空天信息创新研究院 | Ultra-wideband antenna cover for multiband synthetic aperture radar antenna and test method |
| CN116435793A (en) * | 2023-06-15 | 2023-07-14 | 华南理工大学 | Artificial dielectric material, lens unit, manufacturing method and lens antenna |
-
2019
- 2019-07-16 CN CN201921111809.6U patent/CN210040553U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394561A (en) * | 2021-06-10 | 2021-09-14 | 中国科学院空天信息创新研究院 | Ultra-wideband antenna cover for multiband synthetic aperture radar antenna and test method |
| CN113394561B (en) * | 2021-06-10 | 2022-12-23 | 中国科学院空天信息创新研究院 | Ultra-wideband antenna cover for multiband synthetic aperture radar antenna and test method |
| CN116435793A (en) * | 2023-06-15 | 2023-07-14 | 华南理工大学 | Artificial dielectric material, lens unit, manufacturing method and lens antenna |
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