CN203242748U - Direction-finding array antenna with a reflective plane - Google Patents
Direction-finding array antenna with a reflective plane Download PDFInfo
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- CN203242748U CN203242748U CN 201320240628 CN201320240628U CN203242748U CN 203242748 U CN203242748 U CN 203242748U CN 201320240628 CN201320240628 CN 201320240628 CN 201320240628 U CN201320240628 U CN 201320240628U CN 203242748 U CN203242748 U CN 203242748U
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- reflective plane
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- metal reflective
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model discloses a direction-finding array antenna with a reflection plane. The antenna comprises a metal reflective plane and a plurality of unit oscillator antennas, wherein the unit oscillator antennas are fixed on the metal reflective plane, radio frequency feeder line of each unit oscillator antenna is led out from a bottom, and the metal reflective plane is provided with little circular holes or slit grooves (4) and can be a piece of metal plate as well. The unit oscillator antennas (2) are monopole vertically-polarized antenna and are arranged into circular or other geometric shapes. The metal reflective plane (1) can be circular and other shapes. The utility model provides the low-mutual-coupling and miniaturized antenna array which is suitable for being mounted in complex electromagnetic reception environment. By shortening antenna dimensions, reasonably designing size of the metal reflective plane, and arranging the circular holes or slits with various diameters on the metal reflective plane, mutual coupling between near metal objects and the antennas can be effectively reduced, and influences of the near metal objects can be minimized.
Description
Technical field
The utility model relates to a kind of direction finding array antenna, is specifically related to a kind of direction finding array antenna with reflecting surface.
Background technology
Along with the extensive use of radiotechnics in each field, the occasion of the intensive layout of wireless device of various functions is more and more, the particularly type of system antenna and One's name is legion, make to produce between each antenna and intercouple, thereby bring day by day serious electromagnetic compatibility problem, therefore reduce the layout of reasonably optimizing between the technology, antenna of the degree of coupling between antenna, just become the important research content in the Practical Project.Under the abominable electromagnetism reception environment of complexity, common direction estimation antenna array easily is subject to the place restriction of mounting platform, particularly when installation site and near metal object hypotelorism, so that the performances such as the receiving sensitivity of direction-finding equipment, bearing measurement precision all are subject to severe exacerbation.More metal pylon is arranged near antenna array, when comprising reflection that the different numerous metal tubes of dimensions length, face etc. form, refraction environment, if the antenna element length dimension is larger, on the one hand, then can form mutual coupling between these unit, also can produce mutual coupling with near metal object on the other hand, even may form resonance in some direction, make the directional diagram of each element antenna that serious distortion occur.
The antenna-coupled coefficient is an importance in its performance, generally measures with the method for actual measurement by radiation characteristic, the spacing position of analyzing antenna.Development along with computing technique, some researchers utilize numerical method that the lotus root problem of closing of antenna has been carried out some researchs both at home and abroad, mainly comprise the impact of slit on being coupled between antenna that utilizes on the moment method calculating metal floor, to being positioned at two monopole antennas on the metal floor, the contrast that has drawn result of calculation and measured result; R. Tamas has successively used a kind of hybrid selection and Wavelet Method of Moment that the coupling between monopole antenna is estimated, and a kind of new numerical computation method proposed---utilize the Hallen integral equation and use the Green's function of revising, coupling between ship-board antenna is estimated, the coupling coefficient that is opposite to too in addition between two identical monopole antennas on the finite plane plate is estimated.Also have the researcher that the antenna-coupled in the near field radio frequency system is analyzed, use simulation result and its calculated data to compare.Also have according to moment method and geometric theory of diffraction in addition, the degree of coupling between the wire antenna in the mutual coupling between the arbitrary polygonal wire antenna, the near-field region is calculated, but on the whole, above-mentioned these mainly still are in the exploratory stage of theoretical research.
For the direction finding array antenna, its unit number of one side is generally more than 2, so the relation of the mutual coupling between the unit is more more complex.Under the abominable electromagnetism reception environment of complexity, be subject to the place restriction of mounting platform, during with near metal object close together, the mutual coupling between each element antenna and be difficult to calculate with the coupling influence of other device antennas or metal object.
In addition in the echo signal track and localization of single motion platform, wherein the important system of a class is exactly the BO method, also i.e. direction method only, and the essential information of its utilization only has a kind of, that is exactly the arrival direction of echo signal, and this observation information has directly determined operating distance and the scope of system.For example, survey for some echo signal at sea, owing to going to sea after ship arrives a certain marine site, often distance is very far away with the target actual position, therefore requires search equipment to have high detectivity, to satisfy operating distance far away as far as possible.And usually for the obtaining of direction finding message, the ultrashort wave direction finder sensitivity of traditional system is lower, is generally several
V/m, the signal that can only carry out in the sighting distance receives, and this often can not satisfy the application requirements of many practical matter.
The utility model content
In order to solve the above-mentioned technical problem that exists in the prior art, the utility model provides a kind of new direction finding array antenna, and it should have the environment insensitivity, but and installing rack be located under the abominable reception environment, its technical scheme is as follows:
A kind of direction finding array antenna with reflecting surface, comprise metal mirror and several unit element antennas, described unit element antenna is fixed on the described metal mirror, and the radio frequency feed line of each unit element antenna is drawn from its bottom, described metal mirror be arranged small sircle hole or clearance channel.
Further, described metal mirror is metal plate.
Further, described unit element antenna is the monopole vertical polarized antenna.
Further, described unit element antenna is arranged in circle.
Further, described metal mirror is shaped as circle.
Direction finding array antenna with reflecting surface of the present utility model is low-cross coupling miniature antenna array, is fit to be installed on complicated electromagnetism reception environment.By shortening the size of antenna size and appropriate design metallic conduction face, and open the measures such as circular hole that all kinds of diameters do not wait or slit at the metallic conduction face, near the mutual coupling can effectively reducing between metal object and the antenna reduces the impact that near metal object is brought.
Description of drawings
Fig. 1 is the structural representation of the direction finding array antenna with reflecting surface of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, direction finding array antenna with reflecting surface of the present utility model, comprise metal mirror 1 and several unit element antennas, the unit element antenna is arranged by definite shape, be fixed in metal mirror 1 upper end, the radio frequency feed line 2 of each unit element antenna is drawn from the bottom, forms the aerial array with reflecting surface; Metal mirror 1 interfixes with each unit element antenna, and it is shaped as circle, also can be other shapes.Metal mirror 1 can be a metal plate that atresia is seamless, also can open all kinds of small sircle holes 3 or open the clearance channel 4 of other shapes at this metal plate; The unit element antenna is the monopole vertical polarized antenna, and monopole is that length is much smaller than the electric Hertz antenna of wavelength, not necessarily
Radiator.The arrangement of unit element antenna can be circular or other shapes, but not necessarily is confined to the circular metal reflecting surface.
On the electrical property, by shortening the size of antenna size and appropriate design metal mirror, and open the measures such as circular hole that all kinds of diameters do not wait or slit at metal mirror, and effectively reduced the mutual coupling between near metal object and the antenna, reduced the impact that near metal object is brought.
Claims (5)
1. direction finding array antenna with reflecting surface, comprise metal mirror (1) and several unit element antennas, described unit element antenna is fixed on the described metal mirror (1), the radio frequency feed line of each unit element antenna (2) is drawn from its bottom, and it is characterized in that: described metal mirror (1) is provided with small sircle hole (3) or clearance channel (4).
2. the direction finding array antenna with reflecting surface as claimed in claim 1, it is characterized in that: described metal mirror (1) is metal plate.
3. the direction finding array antenna with reflecting surface as claimed in claim 1, it is characterized in that: described unit element antenna is the monopole vertical polarized antenna.
4. the direction finding array antenna with reflecting surface as claimed in claim 1, it is characterized in that: described unit element antenna is arranged in circle.
5. the direction finding array antenna with reflecting surface as claimed in claim 1 is characterized in that: described metal mirror (1) be shaped as circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240628 CN203242748U (en) | 2013-05-07 | 2013-05-07 | Direction-finding array antenna with a reflective plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240628 CN203242748U (en) | 2013-05-07 | 2013-05-07 | Direction-finding array antenna with a reflective plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203242748U true CN203242748U (en) | 2013-10-16 |
Family
ID=49320008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320240628 Expired - Fee Related CN203242748U (en) | 2013-05-07 | 2013-05-07 | Direction-finding array antenna with a reflective plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203242748U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330223A (en) * | 2016-08-31 | 2017-01-11 | 成都九华圆通科技发展有限公司 | Radio monitoring and direction finding system with good electromagnetic compatibility |
| CN116593956A (en) * | 2023-07-19 | 2023-08-15 | 成都大公博创信息技术有限公司 | Full-band space spectrum monitoring direction-finding system with multi-antenna array and host integrated design |
-
2013
- 2013-05-07 CN CN 201320240628 patent/CN203242748U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330223A (en) * | 2016-08-31 | 2017-01-11 | 成都九华圆通科技发展有限公司 | Radio monitoring and direction finding system with good electromagnetic compatibility |
| CN116593956A (en) * | 2023-07-19 | 2023-08-15 | 成都大公博创信息技术有限公司 | Full-band space spectrum monitoring direction-finding system with multi-antenna array and host integrated design |
| CN116593956B (en) * | 2023-07-19 | 2023-09-29 | 成都大公博创信息技术有限公司 | Full-band space spectrum monitoring direction-finding system with multi-antenna array and host integrated design |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20210507 |