CN222126973U - Unmanned aerial vehicle monitoring direction finding antenna of coplane overall arrangement - Google Patents
Unmanned aerial vehicle monitoring direction finding antenna of coplane overall arrangement Download PDFInfo
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- CN222126973U CN222126973U CN202420399518.6U CN202420399518U CN222126973U CN 222126973 U CN222126973 U CN 222126973U CN 202420399518 U CN202420399518 U CN 202420399518U CN 222126973 U CN222126973 U CN 222126973U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 30
- 239000011358 absorbing material Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 4
- 238000009827 uniform distribution Methods 0.000 claims 2
- 238000003491 array Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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Abstract
本实用新型公开了一种共面布局的无人机监测测向天线，包括：全向天线单元阵列、定向天线单元阵列、接收模块安装腔体和天线安装底板，所述全向天线单元阵列、定向天线单元阵列和接收模块安装腔体均设置于天线安装底板上，全向天线单元阵列和定向天线单元阵列呈圆周阵列交错放置，接收模块安装腔体放置于中心。两个天线阵列以共面布局的方式组合在一起，并通过天线单元开孔、增加抗反射吸波材料的方式，降低天线单元间的相互干扰。本监测测向天线减小了高度和体积，且天线中心预留接收单元安装腔体，提高了系统集成度，在车载、便携等应用场景更具优势。
The utility model discloses a coplanar layout unmanned aerial vehicle monitoring and direction-finding antenna, comprising: an omnidirectional antenna unit array, a directional antenna unit array, a receiving module mounting cavity and an antenna mounting base plate, wherein the omnidirectional antenna unit array, the directional antenna unit array and the receiving module mounting cavity are all arranged on the antenna mounting base plate, the omnidirectional antenna unit array and the directional antenna unit array are staggered in a circular array, and the receiving module mounting cavity is placed in the center. The two antenna arrays are combined together in a coplanar layout, and the mutual interference between the antenna units is reduced by opening holes in the antenna units and adding anti-reflection absorbing materials. The monitoring and direction-finding antenna reduces the height and volume, and a receiving unit mounting cavity is reserved in the center of the antenna, which improves the system integration and is more advantageous in vehicle-mounted, portable and other application scenarios.
Description
Technical Field
The utility model relates to a monitoring direction-finding antenna, in particular to an unmanned aerial vehicle monitoring direction-finding antenna with coplanar layout.
Background
With the rapid development of unmanned aerial vehicle technology, unmanned aerial vehicles are widely applied in the fields of private, commercial, military and the like, however, unmanned aerial vehicle 'black flight' behaviors which are not authorized or do not fly according to regulations bring potential risks and threats to public safety, aviation safety, privacy and the like. The unmanned aerial vehicle monitoring and countering system is electronic equipment specially used for monitoring, identifying, positioning and countering the unmanned aerial vehicle, and can provide corresponding guarantee for important places and activities. The unmanned aerial vehicle monitoring direction-finding antenna is one of important equipment in the system, and the basic working principle is that electromagnetic wave signals sent by the unmanned aerial vehicle are received, and the electromagnetic wave amplitude and phase different spatial response characteristics of the receiving antenna array are converted into direction-finding angles through a direction-finding algorithm, so that the unmanned aerial vehicle direction-finding positioning is performed. In order to adapt to different unmanned aerial vehicle signal systems, unmanned aerial vehicle monitoring direction-finding antenna generally has wider operating frequency, needs the design of frequency division to in order to reduce the mutual influence of different frequency channel antennas, adopt the multilayer to stack the overall arrangement mode combination together. This kind of layout mode leads to unmanned aerial vehicle monitoring direction finding antenna volume great, and the height is higher, has brought adverse effect to installation, transportation, the disguise of antenna etc..
Disclosure of utility model
In order to overcome the defect that the existing unmanned aerial vehicle monitoring direction-finding antenna adopts a multilayer layout structure, the height of the antenna is reduced, the mutual influence of antennas in different frequency bands is reduced, and the performance of the monitoring direction-finding antenna is improved, the utility model provides the coplanar layout unmanned aerial vehicle monitoring direction-finding antenna, which mainly adopts the following technical scheme:
The unmanned aerial vehicle monitoring direction finding antenna with the coplanar layout comprises an omnidirectional antenna unit array, a directional antenna unit array, a receiving module installation cavity and an antenna installation bottom plate, wherein the omnidirectional antenna unit array, the directional antenna unit array and the receiving module installation cavity are all arranged on the antenna installation bottom plate, the omnidirectional antenna unit array and the directional antenna unit array are arranged in a staggered mode in a circumferential array, and the receiving module installation cavity is arranged in the center.
Furthermore, the omnidirectional antenna unit array is composed of 5-13 broadband dipole antenna units, and each broadband dipole antenna unit is uniformly arranged on an antenna mounting bottom plate according to circumference.
Furthermore, the metal radiator of the broadband dipole antenna unit is of a symmetrical butterfly design, a group of elliptical holes are formed in the metal radiator, and an impedance matching network is designed at a central feed position in order to reduce interference among the antenna units.
Furthermore, the directional antenna unit array is composed of directional antenna units, the number of the directional antenna units is the same as that of the broadband dipole antenna units, the directional antenna units are arranged in an staggered mode, each directional antenna unit is uniformly distributed on the antenna mounting base plate according to the circumference, and the radiation ends of the directional antenna units and the outer edges of the broadband dipole antenna units are located on the same circumference.
Furthermore, the antenna mounting base plate is provided with a base plate wave absorbing material on one side facing the antenna so as to reduce reflection interference of the antenna mounting base plate.
Further, the outer layer of the receiving module installation cavity is provided with a cavity wave absorbing material so as to reduce reflection interference of the receiving module installation cavity.
Furthermore, the working frequency of the omnidirectional antenna unit array is 0.3-1.4 GHz.
Furthermore, the working frequency of the directional antenna unit array is 1.4-8 GHz.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model combines the antenna arrays with two working frequencies in a coplanar layout mode, and reduces the mutual interference among the antenna units by the mode of opening holes of the antenna units and adding the anti-reflection wave-absorbing material. According to the utility model, the height and the volume of the unmanned aerial vehicle monitoring direction-finding antenna are reduced, the receiving unit installation cavity is reserved in the center of the antenna, the system integration level is improved, the length of a transmission cable between the antenna and the receiving unit is shortened, the radio frequency loss and the cost are reduced, the antenna performance is improved, and the unmanned aerial vehicle monitoring direction-finding antenna has advantages in vehicle-mounted, portable and other application scenes.
Drawings
Fig. 1 is a front view of the overall structure of a coplanar layout unmanned aerial vehicle monitoring direction-finding antenna of the present utility model.
Fig. 2 is a front view of the whole structure of the monitoring direction-finding antenna of the unmanned aerial vehicle with coplanar layout.
Fig. 3 is a front view of the wideband dipole antenna element structure of the present utility model.
The figure shows a 100-omnidirectional antenna unit array, a 200-directional antenna unit array, a 300-receiving module mounting cavity, a 400-antenna mounting base plate, a 110-broadband dipole antenna unit, a 111-metal radiator, a 112-elliptical opening, a 113-impedance matching network, a 210-directional antenna unit, a 310-cavity wave absorbing material and a 410-base plate wave absorbing material
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
First embodiment:
the embodiment is an unmanned aerial vehicle monitoring direction-finding antenna of coplanar overall arrangement.
As shown in fig. 1-3, the unmanned aerial vehicle monitoring direction-finding antenna with the coplanar layout comprises an omnidirectional antenna unit array (100), a directional antenna unit array (200), a receiving module installation cavity (300) and an antenna installation base plate (400), wherein the omnidirectional antenna unit array (100), the directional antenna unit array (200) and the receiving module installation cavity (300) are all arranged on the antenna installation base plate (400), the omnidirectional antenna unit array (100) and the directional antenna unit array (200) are arranged in a staggered mode in a circumferential array, and the receiving module installation cavity is arranged in the center.
The omnidirectional antenna unit array (100) consists of 7 wideband dipole antenna units (110), and each wideband dipole antenna unit (110) is uniformly arranged on an antenna mounting base plate (400) according to the circumference. The broadband dipole antenna unit (110) is manufactured by adopting a printed circuit board process, the metal radiator (111) is of a symmetrical butterfly design, the working frequency is 0.3-1.4 GHz, the height of the antenna is 120mm, and the width of the antenna is 50mm. 6 elliptical openings (112) are arranged in the metal radiator (111), and an impedance matching network (113) is designed at the center feed for improving the reflection coefficient of the antenna.
The directional antenna unit array (200) is composed of 7 directional antenna units (210), the types of the directional antenna units (210) are log periodic antennas, the working frequency is 1.4-8 GHz, and the directional antenna unit array is manufactured by a printed circuit board process. 7 directional antenna units (210) are formed into a radial circumferential array, are staggered with the omnidirectional antenna unit array (100) and are arranged on an antenna mounting bottom plate (400). The radiating ends of the directional antenna units (210) and the outer edges of the broadband dipole antenna units (110) are positioned on the same circumference so as to improve the caliber of the directional antenna unit array (200) to the greatest extent.
The antenna mounting base plate (400) is integrally processed by adopting aluminum alloy, the side facing the antenna is provided with a base plate wave absorbing material (410) by adopting a structural adhesive bonding process, the receiving module mounting cavity (300) is also integrally processed by adopting aluminum alloy, and the outer layer is provided with a cavity wave absorbing material (310) by adopting structural adhesive bonding process. The wave absorbing material can obviously reduce electromagnetic wave reflection and reduce interference to an antenna array.
According to the specific use condition of the equipment, a single-channel or multi-channel receiving unit can be selected in the receiving module mounting cavity (300), an electronic compass, a navigation module and the like can be further mounted on the cavity to meet different requirements, and an antenna housing with light weight, reliability and good wave transmission performance is selected for protecting the unmanned aerial vehicle monitoring and direction finding antenna.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420399518.6U CN222126973U (en) | 2024-03-01 | 2024-03-01 | Unmanned aerial vehicle monitoring direction finding antenna of coplane overall arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420399518.6U CN222126973U (en) | 2024-03-01 | 2024-03-01 | Unmanned aerial vehicle monitoring direction finding antenna of coplane overall arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222126973U true CN222126973U (en) | 2024-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420399518.6U Active CN222126973U (en) | 2024-03-01 | 2024-03-01 | Unmanned aerial vehicle monitoring direction finding antenna of coplane overall arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222126973U (en) |
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2024
- 2024-03-01 CN CN202420399518.6U patent/CN222126973U/en active Active
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