CN106129593B - A kind of all-metal Phased Array Radar Antenna unit of two dimension wide angle scanning - Google Patents
A kind of all-metal Phased Array Radar Antenna unit of two dimension wide angle scanning Download PDFInfo
- Publication number
- CN106129593B CN106129593B CN201610415689.3A CN201610415689A CN106129593B CN 106129593 B CN106129593 B CN 106129593B CN 201610415689 A CN201610415689 A CN 201610415689A CN 106129593 B CN106129593 B CN 106129593B
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- rectangular coaxial
- rectangular
- pair
- ridge arm
- antenna
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q19/104—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 using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
Abstract
The invention discloses a kind of two-dimentional wide angles to scan all-metal Phased Array Radar Antenna unit, it is characterized in that：It is made of the Vivaldi antennas and metallic reflection plate of stereochemical structure；Vivaldi antennas include：A pair of of ridge arm and its antenna chamber being connected, rectangular channel, cylinder resonator, rectangular coaxial outer conductor, rectangular coaxial inner wire, rectangular coaxial feeding interface.One pair of which ridge arm is radiation area, and rectangular channel is transmission range, and rectangular coaxial outer conductor, rectangular coaxial inner wire and rectangular coaxial feeding interface are feed area, and sending and receiving for energy is realized using radiation area, transmission range and feed area.The present invention is according to modern radar technology to index requests such as bandwidth of operation, scanning angles, the unit designed has broadband, high-isolation, with performances such as interior no-raster blind spots, have the advantages that miniaturization, simple in structure, loss is low simultaneously, it can realize (± 60 °) scannings of two-dimentional wide angle so that radar scanning range is wider.
Description
Technical field
The invention belongs to Radar Antenna System fields, and in particular to a kind of all-metal phased array thunder of two dimension wide angle scanning
Up to antenna element.
Background technology
Phased array antenna in tracking radar, survey in equal field and be widely used, main lobe with the needs of communication and
It constantly adjusts, can quickly and accurately control the direction of radiated wave.Phased array antenna unit has following several structures at this stage
It is insufficient to there is certain though respectively there is feature in performance in form.
1, parabolic antenna is a kind of surface antenna.In general antenna diameter is bigger, and gain is higher, it is easy to accomplish, but its spoke
Penetrate that efficiency is usually relatively low, this power for being primarily due to send out due to radiator has quite a few that cannot be cut by reflecting surface
It obtains, is crossed instead from reflecting face edge, cause the leakage losses of energy.
2, Waveguide slot antenna is a kind of aperture antenna.Narrow slit is cut on wave guide wall, is often provided with according to certain rules multiple
Gap, constitutes wave guide slot array antenna, and electromagnetic wave is formed by the outside space radiation in gap.Its major advantage is bore point
Cloth is convenient for control, it is easy to accomplish Low sidelobe level, efficient, compact-sized, processing and simple installation, but the disadvantage is that work frequency
With relatively narrow, it is not easy to realize ultra wide band, experiment scalability is poor, especially in terms of each gap size, it is not easy to it changes, and with
Current machining accuracy needs to consider various influence factors and correct selection design method and accurately calculates gap ginseng
Number, difficulty are larger.
3, tradition Vivaldi antennas are a kind of gradual change slot antennas.Due to using planographic structure, there is broadband, height
The advantages that gain and good time domain specification, can make the antenna for changing but having constant gain with frequency, is made of it
Single polarization and double polarization array antenna can be applied to the phased-array radar of broadband and broadband scan angle.But due to dielectric-slab
Feeder loss the radiation efficiency of antenna can be caused to decline, and there are the parasitic radiation effect of feeder line, antenna element is mutual in array
Coupling is larger, and dielectric structure need to be fixed using auxiliary member.
Invention content
The present invention be in place of overcoming shortcomings and deficiencies of the existing technology provide a kind of miniaturization, broadband, height every
From, easy processing, the all-metal Phased Array Radar Antenna unit of fixed two-dimentional wide angle scanning easy to install, to realize two dimension
(± 60 °) scannings of wide angle, so that radar scanning range is wider.
To realize above-mentioned technical indicator, the technical solution used for：
A kind of the characteristics of all-metal Phased Array Radar Antenna unit of two-dimentional wide angle scanning of the present invention is the all-metal
Phased Array Radar Antenna unit is made of the Vivaldi antenna bodies and metallic reflection plate of stereochemical structure；
The Vivaldi antenna bodies include：A pair of of ridge arm and its antenna chamber being connected, rectangular channel, cylinder resonance
Chamber, rectangular coaxial outer conductor, rectangular coaxial inner wire, rectangular coaxial feeding interface；
In the bottom of the pair of ridge arm, and the upper surface in the antenna chamber is provided with the rectangular channel, described
Rectangular channel is connected with the cylinder resonator being arranged in the antenna chamber；It is provided in the bottom surface of the antenna chamber described
Rectangular coaxial feeding interface；
It is set with the rectangular coaxial inner wire in the rectangular coaxial outer conductor, and is arranged in the antenna chamber；
One end of the rectangular coaxial outer conductor and rectangular coaxial inner wire respectively with the rectangular coaxial feeding interface phase
Connection；The other end of the rectangular coaxial outer conductor is connected to the first ridge arm edge in the pair of ridge arm；The rectangle is same
The other end of axis inner wire passes through the first ridge arm edge of the pair of ridge arm, and is connected to the second ridge arm edge；
The bottom of the Vivaldi antenna bodies is provided with the metallic reflection plate, and the metallic reflection plate and institute
Rectangular coaxial feeding interface is stated to be connected；
The all-metal Phased Array Radar Antenna unit is using the pair of ridge arm as radiation area, is to pass with the rectangular channel
Defeated area, using the rectangular coaxial outer conductor, rectangular coaxial inner wire and rectangular coaxial feeding interface as feed area；To utilize spoke
It penetrates area, transmission range and feed area and realizes sending and receiving for energy.
The characteristics of all-metal Phased Array Radar Antenna unit of the present invention, lies also in：
Any one ridge arm in the pair of ridge arm is both provided with negative camber and positive camber, and negative camber and positive camber it
Between be connected by rectangular surfaces；
The negative camber of the pair of ridge arm is e index function curve, and it is opposite and set to be formed it is horn-like；The pair of ridge arm
Positive camber be arc surface.
The negative camber of the pair of ridge arm (9) is radiation area.
The Vivaldi antenna bodies of stereochemical structure used are metal material.
Compared with prior art, the present invention has the beneficial effect that：
1, inventive antenna main body line of rabbet joint design bending degree is big, realizes the requirement in miniaturization to height with this, and lead to
It crosses and suitable radian is selected to reach best directional, while in both sides, it is contemplated that the influence of surface current respectively cuts a circle
Camber line improves stealth effect.
2, cylinder resonator is added in the present invention, improves the directionality of antenna, keeps high frequency bandwidth wider.
3, by way of the material using only all-metal, rather than traditional mould by dielectric-slab and printed antenna
Formula is more advantageous to and improves antenna service life and stability.
4, the use of metal is sole material, easy processing, fixation easy to install, physical characteristic are good, low-loss, be more easy to realize it is small-sized
Change, easily realizes the ultra wide bandwidth angle scanning in bidimensional.Wherein, material therefor is metal structure.
5, traditional Vivaldi antennas, its radius are gradation type, it is meant that it has broader bandwidth, relative to
For other microstrip antennas, so, on this basis, we are made that this certain improvement, it is contemplated that build printing surface
In this way when aerial radiation electromagnetic wave broader bandwidth, while the coaxial feed used may be implemented, to bandwidth in adult
Influence also reduced accordingly.
Description of the drawings
Fig. 1 is the three dimensional structure diagram of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the standing-wave ratio figure of the present invention；
Figure label：1 rectangular surfaces；2 positive cambers；3 negative cambers；4 cylinder resonators；5 rectangular coaxial outer conductors；6 rectangles are same
Axis inner wire；7 metallic reflection plates；8 rectangular coaxial feeding interfaces；9 a pair of of ridge arms；10 rectangular channels.
Specific implementation mode
In the present embodiment, as shown in Figure 1, a kind of all-metal Phased Array Radar Antenna unit of two dimension wide angle scanning, is
It is made of the Vivaldi antennas and metallic reflection plate 7 of stereochemical structure.
Solid type Vivaldi antennas include：A pair of of ridge arm 9 and its antenna chamber being connected, rectangular channel 10, cylinder are humorous
It shakes chamber 4, rectangular coaxial outer conductor 5, rectangular coaxial inner wire 6, rectangular coaxial feeding interface 8.
The Vivaldi antenna bodies of stereochemical structure used are metal material, can reinforce entire antenna using metal material
Physical strength, usage time is more lasting under severe conditions, and can improve reflection signal intensity.Select all-metal
Structure can further decrease antenna height, it is easier to realize miniaturization.On the one hand it is supported necessary to it ensure that structure strong
Material is saved under degree, reduces cost, on the other hand single rapidoprint reduces the complexity of antenna processing.
As shown in Figure 1, any one ridge arm in a pair of of ridge arm 9 is both provided with negative camber 3 and positive camber 2, and negative camber 3
It is connected by rectangular surfaces 1 between positive camber 2.The negative camber is e index function curve, and it is opposite and set to be formed it is horn-like,
Energy is radiate by electromagnetic wave by negative camber.The general formula of e index function is y=± (aebx+ c), wherein a, b, c are constants,
Through reasonable settings, can in the case where taking into account the indexs such as efficiency and directionality extending bandwidth.The positive camber is arc surface, is reduced
Antenna element invalid, and by the modification of external Surface Parameters, in huge the changing for not causing antenna correlation properties index
The current distribution for becoming lower fine tuning antenna surface, to improve antenna radiation performance, reduces bay to change Distribution of Magnetic Field
Between mutual coupling.
As shown in Figure 1 and Figure 2, in the bottom of ridge arm 9, and the upper surface in antenna chamber is provided with rectangular channel 10, the square
Shape slot 10 is connected with the cylinder resonator 4 being arranged in antenna chamber.It, can will be in cylinder resonator 4 by rectangular channel 10
In shake the electromagnetic wave to be strengthened and be directed to ridge arm, realize the transmission of electromagnetic wave.Meanwhile using cylinder resonator, with rectangle,
Cylindroid resonance is compared, it is possible to reduce the generation of burr improves overall stability.
Meanwhile by the way of coaxial feed, rectangular coaxial inner wire 6 is as set in rectangular coaxial outer conductor 5,
And be arranged in antenna chamber, avoid the influence of aerial radiation.It is fed using rectangular coaxial, reduces microstrip line or band-like
The phenomenon that characteristic impedance is easy to change with the variation of frequency in line feed structure, is easy to match, decreases generation
Dispersion phenomenon, and processing is also more convenient, while parasitic radiation is also relatively low.
The bottom surface of antenna chamber is provided with rectangular coaxial feeding interface 8, to connect feeder line.
As shown in Fig. 2, rectangular coaxial outer conductor 5 and one end of rectangular coaxial inner wire 6 connect with rectangular coaxial feed respectively
Mouth 8 is connected；The other end of rectangular coaxial outer conductor 5 is connected to the first ridge arm edge in a pair of of ridge arm 9；It is led in rectangular coaxial
The other end of body 6 passes through the first ridge arm edge of a pair of of ridge arm 9, and is connected to the second ridge arm edge.Energy passes through feeder line, feed
In antenna body, then arrive radiation area.
The bottom of Vivaldi antenna bodies is provided with metallic reflection plate 7, and metallic reflection plate 7 is fed with rectangular coaxial
Interface 8 is connected；The effect of metallic plate is mainly used for improving gain and directionality, improves receiving sensitivity, blocking and shielding
Electric wave from negative direction increases the reception ability of antenna, is conducive to the directionality for improving aerial radiation direction.
All-metal Phased Array Radar Antenna unit is with a pair of of ridge arm 9 for radiation area, is transmission range with rectangular channel 10, with square
Shape coaxial outer conductor 5, rectangular coaxial inner wire 6 and rectangular coaxial feeding interface 8 are feed area；To utilize radiation area, transmission
Sending and receiving for energy is realized in area and feed area.
As shown in figure 3, by emulation testing, which existsθ=60 °,θ=
Under the conditions of 60 ° of different angle, active standing wave ratio is respectively less than 3 in the design frequency range of 4.8GHz to 6.3GHz, meets engineering
On requirement to the active standing wave ratio of antenna element.Standing-wave ratio is to reflect that the parameter of antenna energy performance, standing wave ratio are got over
It is low, then it represents that antenna radiation performance is better；Since phased array antenna is made of mutiple antennas unit, there are one T/R for each unit
Component is Connectors for Active Phased Array Radar, so needing the size of the concern active standing wave ratio of antenna element.
Claims (3)
1. a kind of all-metal Phased Array Radar Antenna unit of two dimension wide angle scanning, characterized in that the all-metal phased array
Radar antenna unit is made of the Vivaldi antenna bodies and metallic reflection plate (7) of stereochemical structure；Stereochemical structure used
Vivaldi antenna bodies are metal material；
The Vivaldi antenna bodies include：A pair of of ridge arm (9) and its antenna chamber being connected, rectangular channel (10), cylinder are humorous
It shakes chamber (4), rectangular coaxial outer conductor (5), rectangular coaxial inner wire (6), rectangular coaxial feeding interface (8)；
In the bottom of the pair of ridge arm (9), and the upper surface in the antenna chamber is provided with the rectangular channel (10), institute
Rectangular channel (10) is stated with the cylinder resonator (4) being arranged in the antenna chamber to be connected；In the bottom surface of the antenna chamber
It is provided with the rectangular coaxial feeding interface (8)；
It is set with the rectangular coaxial inner wire (6) in the rectangular coaxial outer conductor (5), and is arranged in the antenna chamber
It is interior；
One end of the rectangular coaxial outer conductor (5) and rectangular coaxial inner wire (6) respectively with the rectangular coaxial feeding interface
(8) it is connected；The other end of the rectangular coaxial outer conductor (5) is connected to the first ridge arm edge in the pair of ridge arm (9)；
The other end of the rectangular coaxial inner wire (6) pass through the pair of ridge arm (9) the first ridge arm edge, and with the second ridge arm side
Edge is connected to；
The bottom of the Vivaldi antenna bodies is provided with the metallic reflection plate (7), and the metallic reflection plate (7) with
The rectangular coaxial feeding interface (8) is connected；
The all-metal Phased Array Radar Antenna unit be with the pair of ridge arm (9) be radiation area, with the rectangular channel (10)
It is feed with the rectangular coaxial outer conductor (5), rectangular coaxial inner wire (6) and rectangular coaxial feeding interface (8) for transmission range
Area；To realize sending and receiving for energy using radiation area, transmission range and feed area.
2. all-metal Phased Array Radar Antenna unit according to claim 1, characterized in that in the pair of ridge arm (9)
Any one ridge arm be both provided with negative camber (3) and positive camber (2), and pass through rectangle between negative camber (3) and positive camber (2)
Face (1) is connected；
The negative camber of the pair of ridge arm (9) is e index function curve, and it is opposite and set to be formed it is horn-like；The pair of ridge arm
(9) positive camber is arc surface.
3. all-metal Phased Array Radar Antenna unit according to claim 2, it is characterised in that：The pair of ridge arm (9)
Negative camber be radiation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415689.3A CN106129593B (en) | 2016-06-06 | 2016-06-06 | A kind of all-metal Phased Array Radar Antenna unit of two dimension wide angle scanning |
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| CN201610415689.3A CN106129593B (en) | 2016-06-06 | 2016-06-06 | A kind of all-metal Phased Array Radar Antenna unit of two dimension wide angle scanning |
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| CN106129593B true CN106129593B (en) | 2018-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU216808U1 (en) * | 2022-09-07 | 2023-03-02 | Дмитрий Дмитриевич Алхимов | ANTENNA |
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| CN106532270B (en) * | 2016-12-29 | 2019-08-27 | 南京信息职业技术学院 | Resistor loaded for electromagnetic radiation measuring system minimizes Vivaldi antenna |
| CN107834188B (en) * | 2017-11-27 | 2023-09-19 | 武汉华讯国蓉科技有限公司 | High-gain Vivaldi antenna unit with miniaturized size and antenna array |
| CN108736147A (en) * | 2018-06-06 | 2018-11-02 | 合肥工业大学 | A kind of ultra wide band Vivaldi circular polarisation phased array antenna units |
| CN109980356A (en) * | 2019-04-23 | 2019-07-05 | 中国电子科技集团公司第三十八研究所 | Dual-linear polarization metal gradient slot antenna, array antenna and the method for L-type connector |
| WO2021000078A1 (en) * | 2019-06-29 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Antenna module and electronic device |
| CN110994160A (en) * | 2019-12-27 | 2020-04-10 | 南京长峰航天电子科技有限公司 | 6-18GHz 45-degree polarized metal vivaldi antenna array |
| CN112164897B (en) * | 2020-08-26 | 2023-01-13 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Side-fed dual-polarized all-metal Vivaldi array antenna |
| CN112864636A (en) * | 2020-12-31 | 2021-05-28 | 江苏肯立科技股份有限公司 | Ultra-wideband metal Vivaldi dual-polarized antenna |
| CN113381183B (en) * | 2021-06-10 | 2022-01-25 | 华南理工大学 | Anti-sufficient Vivaldi antenna based on artificial surface plasmon polariton |
| CN114976603A (en) * | 2022-07-28 | 2022-08-30 | 南京天朗防务科技有限公司 | Low-profile broadband wide-angle scanning metal antenna unit |
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