CN109586021A - Ultra wide band dual-linear polarization wide-angle scanning array antenna - Google Patents
Ultra wide band dual-linear polarization wide-angle scanning array antenna Download PDFInfo
- Publication number
- CN109586021A CN109586021A CN201811496608.2A CN201811496608A CN109586021A CN 109586021 A CN109586021 A CN 109586021A CN 201811496608 A CN201811496608 A CN 201811496608A CN 109586021 A CN109586021 A CN 109586021A
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- Prior art keywords
- support
- metab
- array antenna
- power splitter
- wide band
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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
- 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
- H01Q1/12—Supports; Mounting means
-
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/062—Two dimensional planar arrays using dipole aerials
-
- 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
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
-
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention provides a kind of ultra wide band wide-angle scanning array antennas, comprising: multiple radiation period units, support metab (3)；Multiple radiation period units pass through respectively it is orthogonally located in support metab (3) on, adjacent radiation period unit is connected with each other.Scanning angle of the present invention is big, and radiation efficiency is high, and high gain, structure is simply easy to process, can efficiently solve the defects of existing dual-linear polarization array antenna scanning angle is small, and production is complicated.
Description
Technical field
The present invention relates to antenna technical fields, and in particular, to a kind of ultra wide band wide-angle scanning array antenna.
Background technique
With the fast development of wireless communication technique, military avionic equipment system and consumer electronic device system are to array day
The requirement of the scanning range of line, broadband, gain, the performances such as efficiency constantly improves.So having high-gain, high efficiency, broadband
Width, the antenna array of the characteristics such as wide angle scanning just seem particularly significant.Traditional array antenna battle array is by antenna element according to specific
Arrangement regulation forms array, however the spacing of array element is more than the half-wavelength of highest cutoff frequency, can cause graing lobe, if battle array
The spacing of column unit is too small, then stronger mutual coupling effect can be generated between unit and unit, bandwidth can be caused to reduce, impedance is lost
Match, therefore, Wheeler teaches the article " Simple delivered on Trans.Antennas Propag. periodical in nineteen sixty-five
relat ions derived for a phased-array antenna made of an infinite current
Electric current chip-array antenna (Current Sheet Array) is proposed in sheet ", demonstrates infinitepiston battle array using Spectral Domain Method
Radiation characteristic when column theoretically solves the scanning in the face E and the face H of planar array, ties for the subsequent analysis period
Structure lays the foundation.Munk professor is in 2003 in meeting Antennas and Propagation Society
In " the A low-profile broadband phased array antenna " that International Symposium is delivered
Cross-coupling capacitance on the basis of CSA array between adding unit, further improves the bandwidth performance of array.Shanghai traffic is big
Bai Xudong 2014 are learned in meeting Antennas and Propagation Society International Sympos ium
" the Improved coupled ultra-wideband dual-polarized antenna array with delivered
Corrugated ground " proposes a kind of channel form back board structure for inhibiting surface wave, improves directional diagram and gain.
However, most of close coupling array antenna is not the case where increasing wide-angle matching layer or FSS structure at present
Under, being difficult beam scanning under conditions of guaranteeing voltage standing wave ratio VSWR < 2, to 60 °, the present invention is directed to this defect, proposition pair
Model structure improves and simplifies, and is easy to the processing and fabricating of dual-linear polarization structure, and performance is stablized.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of ultra wide band dual-linear polarization wide-angles to scan battle array
Array antenna.
A kind of ultra wide band wide-angle scanning array antenna provided according to the present invention, comprising:
Multiple radiation period units, support metab；
Multiple radiation period units pass through respectively it is orthogonally located in support metab on, adjacent radiation period unit that
This is connected；
The radiation period unit includes:
Medium substrate, power splitter, feed connection, micro-strip metal, two feed Baluns, two doublet units；
Two feed Baluns are connected with power splitter, and power splitter is connected with feed connection；
Described two feed Baluns, power splitter and feed connection are all set in the side of medium substrate, hang down on medium substrate
It is directly set on support metab；
Be all set in described two doublet units, micro-strip metal the other side of medium substrate, doublet unit with it is micro-
Band metal it is connected, is grounded to the micro-strip metal；
Two doublet units are with sharing a micro-strip metal.
Preferably, the doublet unit includes:
Two dipole arms, two microstrip lines；
Described two dipole arms are parallel with support metab；
Described two microstrip lines are arranged in parallel；
Two dipole arms pass through two microstrip lines respectively and are connected with micro-strip metal.
Preferably, it is connected between described two doublet units by dipole arm.
It preferably, further include bracket handle, bracket support column, opening slot；
The bracket handle is fixed on support metab by bracket support column；
The opening slot is set on support metab, and the radiation period unit is set to support gold by opening slot
Belong on pedestal.
Preferably, the feed Balun is Marchand balun；
The power splitter is Wilkinson power splitter.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, dual-linear polarization ultra wide band closely coupled antennae battle array efficiency of the present invention is higher.
2, array of the present invention realizes the active standing wave in the impedance bandwidth of 3:1 without loading FSS or wide-angle matching layer
Under the conditions of less than 2, beam-scanning angles reach 60 °.
3, antenna unit structure of the invention is simple, only need to be at low cost in a piece of dielectric-slab.
4, scanning angle of the present invention is big, and radiation efficiency is high, and high gain, structure is simply easy to process, can efficiently solve existing
There is dual-linear polarization array antenna scanning angle small, makes the defects of complicated.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is ultra wide band array antenna cycle boundary three dimensional structure diagram provided by the invention.
Fig. 2 is array element dual-linear polarization arrangement three dimensional structure diagram in array provided by the invention.
Fig. 3 is signal period unit positive structure schematic provided by the invention and structure schematic diagram.
Fig. 4 is the One Dimension Periodic array 3D structural schematic diagram of ultra wide band array antenna provided by the invention, array 1*16
Array schematic diagram.
Fig. 5 is the two-dimensional array 3D structural schematic diagram of ultra wide band array antenna provided by the invention, and array is 7*16 array
Schematic diagram.
Fig. 6 is the support metab 3D structural schematic diagram of ultra wide band array antenna provided by the invention.
Fig. 7 is the signal period unit of the ultra wide band array antenna of the embodiment of the present invention in 1.5-4.5GHz frequency bands
Stationary wave characteristic schematic diagram.
Fig. 8 is the One Dimension Periodic array of the ultra wide band array antenna of embodiment provided by the invention in 1.5-4.5GHz frequency
Stationary wave characteristic schematic diagram when with interior E Surface scan.
Fig. 9 be embodiment provided by the invention ultra wide band array antenna 3.0GHz frequency point E surface wave beam scanning to 30 °,
Beam gain direction schematic diagram at 45 °, 60 °.
Figure 10 is the two-dimensional array of the ultra wide band array antenna of embodiment provided by the invention in the face 1.5-4.5GHz frequency band E
Normal beam gain direction schematic diagram.
Figure 11 is the two-dimensional array of the ultra wide band array antenna of embodiment provided by the invention in the face 1.5-4.5GHz frequency band E
60 ° of beam gain direction schematic diagrams.
Figure 12 is signal period unit structure schematic diagram provided by the invention.
Figure 13 is signal period unit positive structure schematic provided by the invention.
Figure 14 is signal period unit structure schematic diagram provided by the invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As shown in Fig. 1 to Fig. 6 and Figure 12 to Figure 14, a kind of ultra wide band wide-angle scanning array day for providing according to the present invention
Line, comprising:
Multiple radiation period units, support metab 3；
Multiple radiation period units pass through respectively it is orthogonally located in support metab 3 on, adjacent radiation period unit
It is connected with each other；
The radiation period unit includes:
Medium substrate 1, power splitter 4, feed connection 5, micro-strip metal ground 8, two feed Baluns, 2, two doublet units
12；Further, media plate thickness 1.57mm, relative dielectric constant εr=2.2, material is Asia dragon Di 880 (Arion Di
880)。
Two feed Baluns 2 are connected with power splitter 4, and power splitter 4 is connected with feed connection 5；
Described two feed Baluns 2, power splitter 4 and feed connection 5 are all set in the side of medium substrate 1, medium substrate 1
On be vertically installed in support metab 3 on；
8 other sides for being all set in medium substrate 1 of described two doublet units 12, micro-strip metal ground, doublet unit
12 with micro-strip metal 8 are connected, 8 ground connection of micro-strip metal ground；
Two doublet units 12 with sharing a micro-strip metal 8.
Specifically, the doublet unit 12 includes:
Two dipole arms, 6, two microstrip lines 7；
Described two dipole arms 6 are parallel with support metab 3；
Described two microstrip lines 7 are arranged in parallel；
Two dipole arms 6 with micro-strip metal 8 are connected by two microstrip lines 7 respectively.
Specifically, it is connected between described two doublet units 12 by dipole arm 6.
It specifically, further include bracket handle 9, bracket support column 10, opening slot 11；
The bracket handle 9 is fixed on support metab 3 by bracket support column 10；
The opening slot 11 is set on support metab 3, and the radiation period unit is set to by opening slot 11
It supports on metab 3.
Specifically, the feed Balun 2 is Marchand balun；
The power splitter 4 is Wilkinson power splitter.
Below by preference, the present invention is more specifically illustrated.
Embodiment 1:
The present invention provides a kind of ultra wide band array antennas, are applied to field of communication technology, such as Quick moving platform (wheel
Ship, train, automobile), satellite television etc..Antenna element is constituted by the similar two groups of doublet units of structure are orthogonal, and every group even
Pole subelement includes two connected dipoles and feeder line balun, power splitter, 50 ohm of coaxial adapter.The present invention is more existing
For close coupling array, in the case where guaranteeing antenna performance, wide-angle scanning function is realized, simplifies existing close coupling day
The structure of linear array is easy to the design and processing in kind of antenna array dual-linear polarization.
As shown in Fig. 1 to Fig. 6 and Figure 12 to Figure 14, unit includes medium substrate (1), Marchand balun (2), support gold
Belong to pedestal (3), Wilkinson power splitter (4), coaxial feeding port (5), two-wire polar dipoles unit (12)；Half-wave is even
Extremely sub- arm is composed by gradual change is trapezoidal with rectangle, and adjacent dipole subelement is connected with each other, and forms coupling；Marchand balun
Non-equilibrium port is connected with power splitter, is one section of trapezoidal gradual change microstrip line, the coupling line of two sections of length of λ/4 is concatenated together, defeated
Balance ports out are the input terminal of dipole.Marchand balun and dipole are located at the two sides of dielectric-slab, dielectric-slab
Thickness 1.57mm, relative dielectric constant εr=2.2, material is Asia dragon Di 880 (Arion Di 880), with Wilkinson function point
The opposite dielectric-slab another side of device (4) is (8) metal backing, and metal backing is connected to the ground, and power splitter realizes 50 Ω to 100
The impedance transformation of Ω, dual-linear polarization are realized by orthogonally located identical two array element.Opening slot (11), so that antenna current feed department
Dividing can extend to back-end support, convenient for the welding of feeder and coaxial fitting.As shown in fig. 6, being ultra wide band battle array of the present invention
The support metab 3D structural schematic diagram of array antenna.It is available using electromagnetic simulation software.
It as shown in Figure 7, Figure 8, is port standing-wave ratio curve, beam-scanning angles curve graph.It can be seen that from the curve
Under the premise of port standing-wave ratio is less than 2, this model in 1.5-4.5GHz, ultra wide band in, realize that each scan angle in the face E has one
A main beam, and it is accurately directed toward corresponding scanning direction, wherein up to 60 ° of wide-angle scan performance.
In the present embodiment, array is the face battle array that 7 × 16 are made of unit shown in fig. 5.Such as Fig. 9, Figure 10, Tu11Suo
Show, is antenna gain patterns, it can thus be appreciated that array can scan in the face E to 60 °, with unit periodic array, One Dimension Periodic array
Simulation result consistency it is high, above-described embodiment is that a kind of exemplary forms are suggested, and the invention is not limited to above-mentioned specific
Embodiment, those skilled in the art can make various deformations or amendments within the scope of claim, this has no effect on this hair
Bright substantive content.
Embodiment 2:
As shown in Fig. 1 to Fig. 6 and Figure 12 to Figure 14, a kind of ultra wide band wide-angle scanning array antenna, its structure includes
Vertical dielectric-slab (1), Marchand feed Balun (2), support metab (3), Wilkinson power splitter (4), feed connect
Head (5), horizontal positioned connected dipole (12), the microstrip line (7) on connection dipole and metal ground, micro-strip metal ground (8), bracket
Handle (9), bracket support column (10).Wherein, antenna plate is disposed vertically with support metab (3), dipole and support metal
Pedestal is parallel, a quarter wavelength of the long about highest frequency of dipole arm.
The dual-linear polarization close coupling array antenna, it is characterised in that horizontal positioned connected dipole (12) left and right is complete
Symmetrically, it is convenient for modularization, and antenna radiation efficiency is high.
The dual-linear polarization close coupling array antenna, the antenna element being connected with power splitter is full symmetric, by parity mode
Theorem can simultaneously will by metal that two Marchand baluns are connected to the ground below with being connected to form shared micro-strip metal (8)
Power splitter integrally moves up, and then reduces the overall dimensions of antenna element.
The dual-linear polarization close coupling array antenna, characteristic are the letter of Marchand feed Balun (2) feeding classification
It is single, it is high-efficient, it feeds and forms coupling line between horizontal segment and dipole, enhance coupled capacitor, give antenna with slowing down metal
Bring inductive effect simultaneously because coupling line segment almost covers the brachium of dipole, and then improves dipole electron current
Stability.
The dual-linear polarization close coupling array antenna, it is characterised in that realize double baluns using wilkinson power splitter
Design, reduces the difficulty of balun impedance matching, while cross polarization caused by decreasing because of common-mode effect.
The dual-linear polarization close coupling array antenna, it is characterised in that using connecing the array element of build-out resistor as dummy argument,
The surface wave electric current as caused by truncation effect is effectively absorbed, while the overall dimensions of antenna are influenced smaller.
The dual-linear polarization close coupling array antenna, it is characterised in that support metab has carried out structure design, increases
Bracket handle is added, convenient for the installation and checkout of antenna.
Embodiment 3:
As shown in Fig. 1 to Fig. 6 and Figure 12 to Figure 14, a kind of ultra wide band wide-angle scanning array antenna.Two of the antenna
Polarization in ± 60 ° of scanning ranges has the bandwidth of operation of 3:1, wherein active standing-wave ratio is less than 2, when wave beam normal direction radiates, array
Radiation efficiency in most frequency range can reach 90% or more, and the size of antenna element is 0.15 λl×0.15λl×
0.16λl,λlThe wavelength of free space is corresponded to for lowest operating frequency.
The present invention provides a kind of ultra wide band wide-angle scanning array antennas, and to achieve the above object, the present invention includes day
Beta radiation array, feed Balun, power splitter.The above-mentioned each radiation period unit of antenna includes two connected dipole arms, is situated between
Scutum.The dipole arm of each unit is connected, and is convenient for modularization.
The metal of feeding microstrip line (8) adjacent cells share, improve the stability of antenna performance, while convenient for by function point
Device moves up, and reduces the size of antenna.
Preferably, described two dipole arms are located at the same side of dielectric-slab, and each arm is trapezoidal and one rectangular by one
Shape is composed, and it is antiparallelogram that this is trapezoidal.
Preferably, feed uses Marchand balun feed mode, and long dipole arm is about the corresponding wavelength of highest frequency
A quarter, then dipole is grounded respectively in tail portion, and feed is fed with microstrip lines mode electrode couple, feed
Connector is connected with power splitter, microstrip lines mode refer to two be placed in parallel, microstrip line close to each other is constituted.
Preferably, power splitter uses Wilkinson power splitter, signal all the way is divided into 2 road signals of the constant amplitude with phase, and defeated
There is preferable Signal segregation degree between exit port.
Preferably, cellular construction is simple, convenient for the realization of dual-linear polarization.And cross polarization is smaller, anti-interference ability is good.
Preferably, support metab (3) is designed, convenient for the assembling test of array antenna.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (5)
1. a kind of ultra wide band wide-angle scanning array antenna characterized by comprising
Multiple radiation period units, support metab (3)；
Multiple radiation period units pass through respectively it is orthogonally located in support metab (3) on, adjacent radiation period unit that
This is connected；
The radiation period unit includes:
Medium substrate (1), power splitter (4), feed connection (5), micro-strip metal ground (8), two feed Baluns (2), two dipoles
Subelement (12)；
Two feed Baluns (2) are connected with power splitter (4), and power splitter (4) is connected with feed connection (5)；
Described two feed Baluns (2), power splitter (4) and feed connection (5) are all set in the side of medium substrate (1), medium
It is vertically installed on substrate (1) in support metab (3)；
Described two doublet units (12), micro-strip metal (8) be all set in the other side of medium substrate (1), dipole list
First (12) with micro-strip metal (8) are connected, the micro-strip metal (8) be grounded；
Two doublet units (12) are with sharing a micro-strip metal (8).
2. ultra wide band wide-angle scanning array antenna according to claim 1, which is characterized in that the doublet unit
(12) include:
Two dipole arms (6), two microstrip lines (7)；
Described two dipole arms (6) are parallel with support metab (3)；
Described two microstrip lines (7) are arranged in parallel；
Two dipole arms (6) with micro-strip metal (8) are connected by two microstrip lines (7) respectively.
3. ultra wide band wide-angle scanning array antenna according to claim 2, which is characterized in that described two dipole lists
It is connected between first (12) by dipole arm (6).
4. ultra wide band wide-angle scanning array antenna according to claim 1, which is characterized in that further include bracket handle
(9), bracket support column (10), opening slot (11)；
The bracket handle (9) is fixed in support metab (3) by bracket support column (10)；
The opening slot (11) is set in support metab (3), and the radiation period unit is arranged by opening slot (11)
In in support metab (3).
5. ultra wide band wide-angle scanning array antenna according to claim 1, which is characterized in that the feed Balun (2)
For Marchand balun；
The power splitter (4) is Wilkinson power splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496608.2A CN109586021A (en) | 2018-12-07 | 2018-12-07 | Ultra wide band dual-linear polarization wide-angle scanning array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496608.2A CN109586021A (en) | 2018-12-07 | 2018-12-07 | Ultra wide band dual-linear polarization wide-angle scanning array antenna |
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| Publication Number | Publication Date |
|---|---|
| CN109586021A true CN109586021A (en) | 2019-04-05 |
Family
ID=65927784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811496608.2A Pending CN109586021A (en) | 2018-12-07 | 2018-12-07 | Ultra wide band dual-linear polarization wide-angle scanning array antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114512827A (en) * | 2022-02-24 | 2022-05-17 | 西安电子科技大学 | Ultra-wideband 45-degree-oblique polarization tightly-coupled array antenna |
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| CN114512827A (en) * | 2022-02-24 | 2022-05-17 | 西安电子科技大学 | Ultra-wideband 45-degree-oblique polarization tightly-coupled array antenna |
| CN114512827B (en) * | 2022-02-24 | 2023-08-15 | 西安电子科技大学 | Ultra-wideband 45-degree polarized tight coupling array antenna |
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Application publication date: 20190405 |