CN109546322A - A kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna - Google Patents
A kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna Download PDFInfo
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- CN109546322A CN109546322A CN201811515547.XA CN201811515547A CN109546322A CN 109546322 A CN109546322 A CN 109546322A CN 201811515547 A CN201811515547 A CN 201811515547A CN 109546322 A CN109546322 A CN 109546322A
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- array
- antenna
- ultra wide
- phased array
- dipole
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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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
- H01Q21/293—Combinations of different interacting antenna units for giving a desired directional characteristic one unit or more being an array of identical aerial elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention relates to a kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna, the close coupling structure of capacitive character connection is introduced in dipole antenna configuration, good port match effect is realized in active operation environment in analog array, element antenna port under the premise of ultra wide band；Using the arrangement mode of triarray, array aperture efficiency is effectively improved under the premise of not destroying array close coupling structure, the beam scanning range of expanded matrix improves beam radiation gain；Using the method for loaded frequency selective surface structure, matching layer excessive between antenna radiation impedance and air impedance has effectively been built, has realized the all-wave position ultra wide band matching in large-angle scanning.
Description
Technical field
The invention belongs to radar antenna fields, the in particular to construction design method of ultra wide band phased array antenna.
Background technique
Requirement at present in phased-array radar field to bandwidth and scanning angle is further important, wide band net skill
Art is an important directions of current phased array technology development, this is mainly and phased-array radar is in multiple target, multi-functional feelings
The many new tasks to be completed under condition are closely related.As space technology develops rapidly, the continuous improvement of various aircraft performances,
Space operation is increasing, and modern radar is generally faced with comprehensive electronic interferences, antiradiation missile, low latitude, ultra-low altitude penetration
And target stealth technology etc. four threatens greatly, and this requires modern radars to have anti-atural object, and it is anti-actively to be disturbed with passiveness thousand, it is anti-stealthy
With the ability of own existence.It is also required big in addition to requiring radar antenna wideband operation for the fight capability and range for improving itself
Airspace covering, wide angle scanning etc..Therefore, wide angle scan characteristic is taken into account just while improving phased array antenna bandwidth of operation
As critical issue urgently to be resolved.
The mode for mostly using wide element antenna directly to structure the formation in present wideband phased array antenna has ignored coupling
Brought influence, so that the development of phased array ultra wide band be made to encounter bottleneck.Close coupling technology fundamentally solves this
Problem, the coupling effect being utilized between array element increase the relevance between array element, effectively extend in the active environment of array
Port match.Radiation impedance and air when phased array antenna will appear low Elevation Scanning while realizing wide angle beam scanning
The mismatch problems of impedance.General matching layer can not combine bandwidth and beam scanning covering model when solving the problems, such as this
It encloses, frequency-selective surfaces structure is used in the matching problem for efficiently solving broadband and wideangle in matching layer in the present invention.
Summary of the invention
The purpose of the present invention is to provide a kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna.
Realize the technical solution of the object of the invention are as follows: printing plate element antenna using based on dipole structure is as phased
A burst of member is connected using capacitive character close coupled system between array element, while array is arranged model using triarray；Printing plate oscillator
One Dimension Periodic structure is presented by rectangular microstrip module composition in aerial head loaded frequency selective surface structure in an array.
The main part of invention unit antenna includes five-layer structure altogether, successively are as follows: dipole patch layer one, dielectric layer
One, feed line and mating structure layer, dielectric layer two, dipole patch layer two.Wherein dipole patch layer one and dipole patch
Two structure of layer are identical, using antennas orthogonal normal are axis into symmetric form in arrangement.It is the main body spoke of antenna on dipole patch layer
Part is penetrated, primary structure includes dipole element, feed Balun, short-circuit connecting line and floor.Dipole element both sides extend
To antenna edge, the close coupling in array layout is facilitated to connect.There is an oscillator arms etching to have the gap in dipole element, gap
Size is related to media plate thickness.After element antenna connects in an array, the dipole element of adjacent cells is connected with each other and leads to
It crosses dielectric-slab and forms capacitor, the connection of capacitive close coupling is realized between array element.
Feed line and mating structure layer include the feeder structure and frequency-selective surfaces matching layer structure of antenna.Feed line
Using strip line feeding classification, excitation energy is stitched by the feed Balun that the feed port below antenna is transferred to dipole structure
In gap.The impedance of feed line is gradually converted into 120 ohm of gap by 50 ohm of port, the resistance of feed line terminal extension part
Anti- mating structure, impedance are 77 ohm.Frequency-selective surfaces matching layer structure is presented as that five sizes are in the cells
0.108λH*0.21λHPaster structure be equidistantly arranged to make up (λHFor bandwidth of operation highest highest frequency point wavelength).
In material selection, dielectric layer one and dielectric layer two are all made of Rogers5880, and metal patch is all made of etching copper sheet
Mode be set on dielectric-slab.
Array structure uses triangle battle array, is directly connected between horizontal direction unit, formation strip whole board structure, in dipole
Oscillator part formed adjacent cells between electrical connection.Strip whole board structure is arranged in vertical direction, horizontal between adjacent cells
On direction staggeredly, staggeredly distance is element antenna horizontal length half.Final array pitch is determined as 0.66 λ of horizontal directionH, hang down
Histogram is to for 0.42 λH.According to different operating demand and operation environment, can be put by the position of array to determine wave beam
Radiation polarization.For example, when strip antenna medium plate is parallel to ground, radiate as horizontal polarization, strip antenna medium plate hangs down
Directly when ground, radiate as vertical polarization.
The efficient active matching of ultra-wide port of 3 frequencys multiplication or more may be implemented in phased array array structure in the present invention, together
When polarizers of big angle scope beam scanning and total space all-wave position efficient matchings are realized in working band.
Detailed description of the invention
Fig. 1 is invention unit antenna front view.
Fig. 2 is invention unit antenna centre feed line and matching schematic diagram of a layer structure.
Fig. 3 is layer structure sectional view of the present invention.
Fig. 4 is 16*16 triangle arrangement phased array array structure schematic diagram in the embodiment of the present invention.
Fig. 5 is voltage standing wave ratio under element antenna periodic boundary condition in the embodiment of the present invention.
Fig. 6 is phased array antenna low frequency point vertical plane beam scanning direction figure in the embodiment of the present invention.
Fig. 7 is phased array antenna low frequency point horizontal plane beam scanning direction figure in the embodiment of the present invention.
Fig. 8 is phased array antenna center frequency point vertical plane beam scanning direction figure in the embodiment of the present invention.
Fig. 9 is phased array antenna center frequency point horizontal plane beam scanning direction figure in the embodiment of the present invention.
Figure 10 is phased array antenna high frequency points vertical plane beam scanning direction figure in the embodiment of the present invention；
Figure 11 is phased array antenna high frequency points horizontal plane beam scanning direction figure in the embodiment of the present invention.
In figure: 1-1 dielectric-slab；1-2 dipole paster vibrator structure；1-3 dipole patch short circuit connecting wire structure；1-4
Dipole patch barron structure；1-5 dipole patch floor panel structure；2-1 feed line；2-2 frequency-selective surfaces matching layer
Structure；3-1 dipole patch layer one；3-2 dielectric layer one；3-3 feed line and mating structure layer；3-4 dielectric layer two；3-5 dipole
Sub- patch layer two；4 strip whole board structures.
Specific embodiment
The present invention is said using 256 yuan of phased arrays of the three times bandwidth antenna of 6~18GHz and its 16*16 as embodiment
It is bright.
Such as Fig. 3, antenna includes five-layer structure, and dielectric layer one and two thickness of dielectric layer are 0.5mm, and material is
Rogers5880, dielectric constant 2.2.Patch dipole, feed line and frequency-selective surfaces mating structure etc. are etched in medium
On plate.Element antenna overall dimensions are 12.8mm*11mm.Dipole paster vibrator structure height is 1.9mm, and two sides extend to day
Line edge.There are side oscillator arms to form the gap of 0.5mm wide in dipole paster structure.Dipole patch barron structure connects
Two sides oscillator is connect, centre forms the feed gaps of 1.3mm wide.Dipole patch floor panel structure height is 3mm.Feeder structure point
For four parts, the width of connectivity port is 0.82mm, and feed section width is 0.265mm at gap, and end compatible portion is wide
Degree is 0.415mm, impedance transition mechanism of the transition portion for port section to slotted section.Feed line whole height is 6.95mm.
Frequency-selective surfaces matching layer structure is presented as that five rectangular metal patches are equidistantly arranged to make up in element antenna, metal patch
Piece size is 3.5mm*1.8mm, and gap is 0.4mm between metal patch.
For the phased array structures be made of 256 array elements as shown in figure 4, array uses triangle battle array arrangement mode, array element is horizontal
Direction spacing is 11mm, and vertical direction spacing is 7mm.Front caliber size >=187mm*120mm.Array element is compact in horizontal direction
It arranges, forms close coupling between array element, while matching layer forms complete frequency-selective surfaces structure.
Active environment of the element antenna in periodic boundary condition Imitating array, the voltage reflection coefficient of port is such as at this time
Shown in Fig. 5.In the working band of 6~18GHz, the voltage reflection coefficient of antenna port ensure that 3 frequency multiplication ultra-wide of antenna less than 2
With the normal work in range.
Unit uses uniform feeding classification in array, and feed amplitude is identical between port, is changed according to the demand of scanning beam
Phase difference.In working band low frequency point, center frequency point and high frequency points two beam scanning direction figure such as Fig. 6 to Figure 11 institutes
Show.The main radiation parameter of wave beam is as shown in the table in work.Phased array keeps two-dimensional space in entire 3 frequency multiplication working band
± 70 ° or more of scanning range.
| Beam gain (dBi) | Vertical beamwidth (°) | Horizontal plane beam angle (°) | |
| 6GHz | 20 | 22.8 | 14.4 |
| 12GHz | 25.9 | 11.3 | 7.2 |
| 18GHz | 29.6 | 7.5 | 4.8 |
Claims (1)
1. a kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna, it is characterised in that: based on dipole structure
Printing plate element antenna is connected between array element using capacitive character close coupled system as phased array elements, while array uses triangle
Array arrangement model；Printing plate element antenna top-loaded frequency-selective surfaces structure, by rectangular microstrip module composition, in array
Middle presentation One Dimension Periodic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515547.XA CN109546322A (en) | 2018-12-12 | 2018-12-12 | A kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515547.XA CN109546322A (en) | 2018-12-12 | 2018-12-12 | A kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna |
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| CN109546322A true CN109546322A (en) | 2019-03-29 |
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| CN201811515547.XA Pending CN109546322A (en) | 2018-12-12 | 2018-12-12 | A kind of ultra wide bandwidth angle sweep and efficient matchings phased array antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518347A (en) * | 2019-08-27 | 2019-11-29 | 南京邮电大学 | A kind of multiband car antenna |
| CN110994197A (en) * | 2019-12-12 | 2020-04-10 | 电子科技大学 | Wide-angle conformal linear phased array antenna based on FSS structure |
| CN111029791A (en) * | 2019-12-20 | 2020-04-17 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Tightly coupled dipole reflection antenna array |
| CN112701495A (en) * | 2020-12-17 | 2021-04-23 | 电子科技大学 | Frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased array based on strong coupling effect |
| CN112909505A (en) * | 2019-12-27 | 2021-06-04 | 华为技术有限公司 | Antenna and electronic equipment |
| CN115064864A (en) * | 2022-08-18 | 2022-09-16 | 南京天朗防务科技有限公司 | Full-polarization antenna unit and antenna array |
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| CN201927068U (en) * | 2010-12-09 | 2011-08-10 | 华中科技大学 | Laser hologram RFID label using coplane inverted-F antenna |
| CN204361287U (en) * | 2014-12-23 | 2015-05-27 | 陕西特恩电子科技有限公司 | A kind of Phased Array Radar Antenna for L-band large-angle scanning |
| CN108270079A (en) * | 2018-01-31 | 2018-07-10 | 南京航空航天大学 | A kind of circular polarisation closely coupled antennae battle array |
| CN207818881U (en) * | 2018-02-08 | 2018-09-04 | 西安星网天线技术有限公司 | A kind of restructural close coupling Wide band array antenna |
| CN108682953A (en) * | 2018-03-19 | 2018-10-19 | 南京理工大学 | A kind of ultra wide bandwidth angle closely coupled antennae |
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Patent Citations (5)
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| CN201927068U (en) * | 2010-12-09 | 2011-08-10 | 华中科技大学 | Laser hologram RFID label using coplane inverted-F antenna |
| CN204361287U (en) * | 2014-12-23 | 2015-05-27 | 陕西特恩电子科技有限公司 | A kind of Phased Array Radar Antenna for L-band large-angle scanning |
| CN108270079A (en) * | 2018-01-31 | 2018-07-10 | 南京航空航天大学 | A kind of circular polarisation closely coupled antennae battle array |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518347A (en) * | 2019-08-27 | 2019-11-29 | 南京邮电大学 | A kind of multiband car antenna |
| CN110994197A (en) * | 2019-12-12 | 2020-04-10 | 电子科技大学 | Wide-angle conformal linear phased array antenna based on FSS structure |
| CN111029791A (en) * | 2019-12-20 | 2020-04-17 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Tightly coupled dipole reflection antenna array |
| CN112909505A (en) * | 2019-12-27 | 2021-06-04 | 华为技术有限公司 | Antenna and electronic equipment |
| CN112701495A (en) * | 2020-12-17 | 2021-04-23 | 电子科技大学 | Frustum-mounted two-dimensional conformal low-scattering ultra-wideband phased array based on strong coupling effect |
| CN115064864A (en) * | 2022-08-18 | 2022-09-16 | 南京天朗防务科技有限公司 | Full-polarization antenna unit and antenna array |
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Application publication date: 20190329 |