CN218548790U - High-temperature-resistant satellite navigation antenna - Google Patents
High-temperature-resistant satellite navigation antenna Download PDFInfo
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- CN218548790U CN218548790U CN202222499550.5U CN202222499550U CN218548790U CN 218548790 U CN218548790 U CN 218548790U CN 202222499550 U CN202222499550 U CN 202222499550U CN 218548790 U CN218548790 U CN 218548790U
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- inner cover
- high temperature
- satellite navigation
- bottom plate
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Abstract
The utility model discloses a high temperature resistant satellite navigation antenna, including the antenna house, the bottom bolted connection of antenna house has the alloy bottom plate, the top of alloy bottom plate is provided with outer thermal-insulated inner cover, the lateral wall of outer thermal-insulated inner cover closely laminates with the inside wall of antenna house, the inside of outer thermal-insulated inner cover is provided with inlayer thermal-insulated inner cover, the inside wall of outer thermal-insulated inner cover closely laminates with the lateral wall of inlayer thermal-insulated inner cover, low noise amplifier is installed to the bottom up end intermediate position of inlayer thermal-insulated inner cover, install the antenna oscillator on low noise amplifier's the up end. The utility model discloses not only set up a lot of thermal-insulated structure for the antenna element can work under high temperature, and the signal propagation efficiency has also been guaranteed in the setting of air bed moreover, and the device compact structure, the consume is little, and it is also very convenient to install.
Description
Technical Field
The utility model relates to a satellite navigation antenna technical field especially relates to a high temperature resistant satellite anti-interference antenna.
Background
In recent years, with the completion of Beidou third-generation networking and the use, the high-temperature-resistant satellite navigation antenna is increasingly widely applied, and more equipment platforms are provided. High temperature resistant satellite navigation antenna who installs on some high-speed aircraft can be by pneumatic heating in using, makes the outside high temperature environment that forms a period of time of antenna, and this environment needs the antenna to possess high temperature resistant ability to prevent devices such as internal oscillator, solder joint, LNA (low noise amplifier) to become invalid under high temperature environment.
However, the conventional satellite navigation antenna is difficult to work in a high-temperature environment for a long time, internal elements of the conventional satellite navigation antenna may be damaged and failed due to overhigh temperature after the conventional satellite navigation antenna works at a high temperature for a long time, and the signal propagation capacity of the conventional satellite navigation antenna is reduced due to excessive heat-insulating structures, so that the conventional satellite navigation antenna is inconvenient to use.
The prior patent (CN 214957340U) discloses a high temperature resistant satellite navigation antenna, which includes an antenna housing made of high temperature resistant non-metallic material, a bearing bottom plate connected to the antenna housing to jointly construct a containing chamber with the antenna housing, an antenna main body tightly attached to the bearing bottom plate and located in the containing chamber, and a heat insulation member placed in the containing chamber and tightly attached to the antenna housing and/or the antenna main body. The antenna housing and the heat insulation piece can be utilized to construct a multi-layer high-temperature-resistant protective layer on the radiation surface side of the antenna main body, so that the overall thickness of the antenna is reduced to the maximum extent, and meanwhile, the heat conducted from the outside of the whole antenna to the antenna main body can be effectively reduced, and the antenna main body can stably work in a low-temperature environment; meanwhile, the antenna housing is made of materials and is designed to be in a conformal structure with the high-speed aircraft, so that the overall high-temperature resistance and mechanical strength of the antenna can be guaranteed, and the aerodynamic performance requirement of the antenna when the antenna housing is applied to the high-speed aircraft can be met.
However, this device still has some problems: the antenna oscillator and the outer cover are not provided with air layers, but are tightly attached together, so that the signal transmission capability of the antenna is reduced, the signal transmission capability is reduced, the real-time performance of data transmission is reduced, and the use is not convenient enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the high temperature resistant satellite navigation antenna who proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a high temperature resistant satellite navigation antenna, includes the antenna house, the bottom bolted connection of antenna house has the alloy bottom plate, the top of alloy bottom plate is provided with outer thermal-insulated inner cover, the lateral wall of outer thermal-insulated inner cover closely laminates with the inside wall of antenna house, the inside of outer thermal-insulated inner cover is provided with the thermal-insulated inner cover of inlayer, the inside wall of outer thermal-insulated inner cover closely laminates with the lateral wall of the thermal-insulated inner cover of inlayer, low noise amplifier is installed to the bottom up end intermediate position of the thermal-insulated inner cover of inlayer, install the antenna oscillator on low noise amplifier's the up end.
As a further description of the above technical solution:
and the middle position of the lower end face of the alloy bottom plate is connected with a radio frequency connector through a bolt.
As a further description of the above technical solution:
the top of the inner side wall of the inner heat insulation inner cover is fixedly provided with a partition plate, and the outer side wall of the antenna oscillator is tightly attached to the partition plate
As a further description of the above technical solution:
an air layer is formed on the inner side of the lower side wall of the inner heat insulation inner cover and the upper end parts of the partition board and the outer side wall of the antenna oscillator.
As a further description of the above technical solution:
the bottom of antenna house is provided with four bottom screws that the equidistance distributes, set up four screws that match the use with the bottom screw on the alloy bottom plate, threaded connection has the mounting screw on four screws of alloy bottom plate, the antenna house passes through mounting screw bolted connection with the alloy bottom plate.
As a further description of the above technical solution:
four screw holes are formed in four corners of the upper side wall of the radio frequency connector, four screw holes matched with the screw holes in the radio frequency connector are formed in the lower end face of the alloy base plate, and the radio frequency connector is connected with the alloy base plate through bolts.
As a further description of the above technical solution:
the antenna housing is made of ceramic matrix composite materials.
As a further description of the above technical solution:
the outer heat insulation inner cover and the inner heat insulation inner cover are both made of silicon dioxide aerogel materials.
The utility model discloses following beneficial effect has:
the utility model discloses in, the antenna house adopts ceramic matrix composite, utilize its advantage of high temperature resistant and stable performance, reduce the influence to the antenna performance under the high temperature, the antenna house inlayer sets up outer thermal-insulated inner cover and the thermal-insulated inner cover material adoption of inlayer has the silica aerogel combined material of low thermal conductivity, temperature resistant device is chooseed for use to the low noise amplifier, adopt high temperature tin cream during the welding, but low noise amplifier cavity and alloy substrate material use coefficient of expansion and thermal conductivity low kovar alloy, the sealed glue of high temperature resistant of each part contact surface coating of antenna, reach the purpose of sealing waterproof, the antiseep.
In the utility model, antenna element and low-noise amplifier components and parts keep stable lower temperature under outside high temperature environment, make the antenna stabilize normal work, the mounting screw fastening is on the antenna shade for the alloy bottom plate, not only can guarantee the bulk strength of equipment, also made things convenient for later maintenance, separate with the air bed between insulating layer and the antenna oscillator, antenna oscillator received antenna signal has effectively been guaranteed, adopt between antenna oscillator and the low-noise amplifier to present needle direct feed, remove the radio frequency connector, the structure is compacter, the loss is littleer.
In the utility model, not only set up thermal-insulated structure many times for the antenna element can work under high temperature, and the signal propagation efficiency has also been guaranteed in the setting of air bed moreover, and the device compact structure, the consume is little, and it is also very convenient that the installation gets up.
Drawings
Fig. 1 is an overall view of a high temperature resistant satellite navigation antenna provided by the present invention;
fig. 2 is a schematic back view of an antenna housing of a high temperature resistant satellite navigation antenna provided in the present invention;
fig. 3 is a schematic diagram of each part of a high temperature resistant satellite navigation antenna provided by the present invention;
fig. 4 is a front cross-sectional view of a high temperature resistant satellite navigation antenna provided by the present invention.
Illustration of the drawings:
1. an antenna cover; 2. an outer heat-insulating inner cover; 3. an inner heat insulation inner cover; 4. an antenna element; 5. a low noise amplifier; 6. an alloy base plate; 7. mounting screws; 8. a radio frequency connector; 9. an air layer; 10. a bottom screw hole; 11. a separator.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides an embodiment: the utility model provides a high temperature resistant satellite navigation antenna, including antenna house 1, the bottom bolted connection of antenna house 1 has alloy bottom plate 6, the top of alloy bottom plate 6 is provided with outer thermal-insulated inner cover 2, the lateral wall of outer thermal-insulated inner cover 2 closely laminates with the inside wall of antenna house 1, the inside of outer thermal-insulated inner cover 2 is provided with inlayer thermal-insulated inner cover 3, the inside wall of outer thermal-insulated inner cover 2 closely laminates with the lateral wall of inlayer thermal-insulated inner cover 3, low noise amplifier 5 is installed to the bottom up end intermediate position of inlayer thermal-insulated inner cover 3, install antenna oscillator 4 on the up end of low noise amplifier 5.
Alloy bottom plate 6's lower terminal surface intermediate position bolted connection has radio frequency connector 8, the inside wall top fixed mounting of inlayer heat insulating inner cover 3 has baffle 11, the lateral wall of antenna oscillator 4 closely laminates with baffle 11, the part that the lower lateral wall inboard of inlayer heat insulating inner cover 3 leans on the upper end with baffle 11 and antenna oscillator 4 lateral wall is formed with air layer 9, the bottom of antenna house 1 is provided with four equidistance distribution's bottom screw 10, set up four screws that match the use with bottom screw 10 on the alloy bottom plate 6, threaded connection has mounting screw 7 on four screws of alloy bottom plate 6, antenna house 1 passes through mounting screw 7 bolted connection with alloy bottom plate 6.
The upper side wall four corners position of radio frequency connector 8 is provided with four screws, is provided with four screws that match the use with the screw on the radio frequency connector 8 on the lower terminal surface of alloy bottom plate 6, and radio frequency connector 8 and 6 bolted connection of alloy bottom plate, antenna house 1 adopt ceramic matrix composite material, and outer thermal-insulated inner cover 2 all adopts the silica aerogel material with inlayer thermal-insulated inner cover 3.
The working principle is as follows: the antenna housing 1 is made of a ceramic matrix composite material, the advantages of high temperature resistance and stable performance are utilized, the influence on the performance of the antenna at high temperature is reduced, the inner layer of the antenna housing 1 is provided with the outer heat insulation inner cover 2 and the inner heat insulation inner cover 3 which are made of a silicon dioxide aerogel composite material with low thermal conductivity, the low-noise amplifier 5 is made of a temperature-resistant device, high-temperature tin paste is adopted during welding, the cavity of the low-noise amplifier 5 and the material of the alloy bottom plate 6 are made of kovar alloy with low expansion coefficient and low thermal conductivity, high-temperature-resistant sealant is coated on the contact surface of each part of the antenna, the purposes of sealing, water proofing and leakage prevention are achieved, the antenna unit and the components of the low-noise amplifier 5 are kept stable at low temperature of about 100 ℃ under the external high-temperature environment, the antenna is enabled to work stably and normally, the alloy bottom plate 6 is fastened on the antenna housing 1 through the mounting screws 7, the integral strength of equipment can be guaranteed, later maintenance is also facilitated, the heat insulation layer and the antenna oscillator 4 are separated through the air layer 9, the antenna oscillator 4 is effectively guaranteed, the antenna oscillator 4 receives antenna signals, a feed needle is directly fed between the antenna oscillator 4 and the low-noise amplifier 5, the radio-frequency connector 8 is removed, and the structure is more compact and the loss is smaller.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a high temperature resistant satellite navigation antenna, includes antenna house (1), its characterized in that: the bottom bolted connection of antenna house (1) has alloy bottom plate (6), the top of alloy bottom plate (6) is provided with outer thermal-insulated inner cover (2), the lateral wall of outer thermal-insulated inner cover (2) closely laminates with the inside wall of antenna house (1), the inside of outer thermal-insulated inner cover (2) is provided with inner heat-insulated inner cover (3), the inside wall of outer thermal-insulated inner cover (2) closely laminates with the lateral wall of inner heat-insulated inner cover (3), low noise amplifier (5) are installed to the bottom up end intermediate position of inner heat-insulated inner cover (3), install antenna oscillator (4) on the up end of low noise amplifier (5).
2. The high temperature resistant satellite navigation antenna of claim 1, wherein: the middle position of the lower end face of the alloy bottom plate (6) is connected with a radio frequency connector (8) through a bolt.
3. The high temperature resistant satellite navigation antenna of claim 1, wherein: the inner side wall top fixed mounting of inlayer thermal-insulated inner cover (3) has baffle (11), the lateral wall and baffle (11) of antenna element (4) closely laminate.
4. A high temperature resistant satellite navigation antenna as recited in claim 3, wherein: an air layer (9) is formed on the inner side of the lower side wall of the inner heat insulation inner cover (3) and the upper end parts of the partition plate (11) and the outer side wall of the antenna oscillator (4).
5. The high temperature resistant satellite navigation antenna of claim 1, wherein: the bottom of antenna house (1) is provided with four bottom screw holes (10) that the equidistance distributes, set up four screws that match the use with bottom screw hole (10) on alloy bottom plate (6), threaded connection has mounting screw (7) on four screws of alloy bottom plate (6), antenna house (1) passes through mounting screw (7) bolted connection with alloy bottom plate (6).
6. The high temperature resistant satellite navigation antenna of claim 2, wherein: four screw holes are formed in four corners of the upper side wall of the radio frequency connector (8), four screw holes matched with the screw holes in the radio frequency connector (8) in use are formed in the lower end face of the alloy bottom plate (6), and the radio frequency connector (8) is connected with the alloy bottom plate (6) through bolts.
7. The high temperature resistant satellite navigation antenna of claim 1, wherein: the antenna housing (1) is made of a ceramic matrix composite material.
8. The high temperature resistant satellite navigation antenna of claim 1, wherein: the outer layer heat insulation inner cover (2) and the inner layer heat insulation inner cover (3) are both made of silicon dioxide aerogel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222499550.5U CN218548790U (en) | 2022-09-21 | 2022-09-21 | High-temperature-resistant satellite navigation antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222499550.5U CN218548790U (en) | 2022-09-21 | 2022-09-21 | High-temperature-resistant satellite navigation antenna |
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| Publication Number | Publication Date |
|---|---|
| CN218548790U true CN218548790U (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222499550.5U Active CN218548790U (en) | 2022-09-21 | 2022-09-21 | High-temperature-resistant satellite navigation antenna |
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| CN (1) | CN218548790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239392A (en) * | 2023-09-21 | 2023-12-15 | 北京中捷时代航空科技有限公司 | Ceramic antenna structure applied to high-temperature environment |
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2022
- 2022-09-21 CN CN202222499550.5U patent/CN218548790U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239392A (en) * | 2023-09-21 | 2023-12-15 | 北京中捷时代航空科技有限公司 | Ceramic antenna structure applied to high-temperature environment |
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