CN105552538B - A kind of two dimension wide-angle plane of scanning motion phased array antenna - Google Patents
A kind of two dimension wide-angle plane of scanning motion phased array antenna Download PDFInfo
- Publication number
- CN105552538B CN105552538B CN201510955721.2A CN201510955721A CN105552538B CN 105552538 B CN105552538 B CN 105552538B CN 201510955721 A CN201510955721 A CN 201510955721A CN 105552538 B CN105552538 B CN 105552538B
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- antenna
- phased array
- radiation patch
- substrate
- array 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
- 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
- H01Q1/50—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
- H01Q21/065—Patch antenna array
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of two-dimentional wide-angle plane of scanning motion phased array antenna, belong to antenna technical field.The phased array antenna unit includes medium substrate, the radiation patch set on substrate front side and microstrip feed line, the earth plate set on substrate back.The present invention carries out fluting design to radiation patch, and only feeding network does not provide placement space, also reduces antenna size；By the way of coaxial back of the body feedback, and signal is divided into two-way, equal amplitude feed is carried out to radiation patch, the TM of antenna has been encouraged with this11Mould makes the antenna pattern of antenna have the characteristic of broad beam, so as to the ability that phased array antenna is made to have wide-angle scanning；Simultaneously in order to reach good matching effect, the feeding network inside radiation patch is designed in the form of gradual change type microstrip line.Finally, antenna element is equidistantly arranged in face battle array structure, since the wave cover angle of unit in itself is larger, two-dimentional wide-angel beam scanning can be achieved after it is rationally structured the formation.
Description
Technical field
The invention belongs to antenna technical field, more particularly to a kind of novel two-dimentional wide-angle scanning based on pattern theory is flat
Face phased array antenna.
Background technology
Phased array antenna is with radar system development and the product of birth.Conventional planar phased array antenna is by automatically controlled
The method of array element phase processed changes the beam position of directional diagram, but research shows that this its scanning range of tradition phased array antenna
It is only confined in -45 °~+45 ° of front normal.Narrow scanning range dramatically the limit application field of phased array and
Development space, therefore the phased-array radar for having wide-angle scan capability is increasingly paid attention to by people, becomes field of antenna one
A important research topic.
Document " millimeter wave directional diagram reconstructable aerial and its phased array research " (delivers periodical：National microwave milli in 2011
Metric wave proceeding；Date issued：2011；Author：Wang Bingzhong, fourth clouds) propose one kind can wide-angle scan and increase
The higher phased array antenna of benefit, the antenna element, by changing the structure of feeding network, are made by the way of aperture-coupled
Obtaining antenna has the characteristic of directional diagram reconstructable.Unit devises the wide angle linear polarization scanned straight lines of Unit 1 × 4 accordingly
Array.Document has only carried out one-dimensional beam scanning, is not extended in two-dimentional level, and not only needs to adjust at work
Difference between unit also needs to control each unit, increases the control difficulty of antenna and makes complexity, reduces phase
Control the reliability of battle array.
Document " Balanced antipodal Vivaldi antenna for wide bandwidth phased
Arrays " (delivers periodical：IEEE Proc-MmowAntennas Propag；Date issued：In April, 1996；Author：
J.D.S.Langley, P.S.Hall, P.Newham) a kind of phased array using Vivaldi antenna as unit is proposed, wherein tieing up
Wa Er antennas can realize that broad beam radiates in one-dimensional square, therefore after group battle array, phased array does not have greatly on one-dimensional face
The ability of angle scanning fails to realize the wide-angle scanning of two-dimensional surface, and according to it the results show that the scanning of phased array antenna increases
Beneficial flatness decline is in more than 5dB.
At present, most reports only realize one-dimensional large-angle scanning, seldom have been reported that and are extended to two-dimentional large-angle scanning.Cause
How this, realize two-dimentional large-angle scanning, and holding fine scanning wave beam is phased array antenna research during large-angle scanning
An opportunities and challenges and the subject deposited in field.
Invention content
For the prior art and problem, the purpose of the present invention is to provide one kind can realize the two-dimentional wide-angle plane of scanning motion
Phased array antenna.
The present invention is based on pattern theories to design two-dimentional broad beam antenna unit, is divided according to the pattern theory of microstrip antenna
Analysis is found, is operated in TM11Microstrip antenna under pattern has the characteristic of two-dimentional broad beam covering, can be on its each side when its work
A standing wave zero is generated, electric field is most strong in four apex angles of square patch, and moves towards patch center, and electric field is gradually decayed,
At square patch center, electric field zero, the maximum direction of radiation will deviate side and penetrate direction.Therefore the present invention uses following skill
Art scheme：
A kind of two dimension broad beam antenna unit, radiation patch and microstrip feed line including medium substrate, set on substrate front side,
Set on the metal ground plate of substrate back, it is characterised in that：The radiation patch is square, center and substrate center's weight
It closes, radiation patch center is provided with square indentations；
The microstrip feed line is the centrosymmetric gradual change type microstrip feed line being set in radiation patch groove, centre bit
Distributing point is set to, two ends are connected respectively with the pair of horns of groove；
The size of the metal ground plate is identical with the size of substrate；
The antenna element is connected by coaxial feeding, coaxial inner conductor across substrate with distributing point, outer conductor with
Earth plate is connected.
The antenna element equidistantly rearranges array antenna.
According to theory analysis, TM11Radiation patch under pattern should be rectangular, and the present invention is in order to simplify antenna structure, to patch
Fluting design is carried out, is square ring structure by patch design, only feeding network does not provide placement space, also reduces antenna ruler
It is very little, conducive to the design of phased array.The present invention is fed, and signal is divided into two-way by the way of coaxial back of the body feedback, to radiation
A pair of patch is diagonal to carry out equal amplitude feed, and the TM of antenna has been encouraged with this11Mould, makes the antenna pattern of antenna have width
The characteristic of wave beam, so as to the ability for making phased array antenna that there is wide-angle scanning, while in order to reach good matching effect,
Feeding network inside radiation patch is designed in the form of gradual change type microstrip line.Finally, radiating element is equidistantly arranged
Into face battle array structure, since the wave cover angle of unit in itself is larger, two-dimentional wide-angle wave can be achieved after it is rationally structured the formation
Beam scanning.Using CST Microwave Studio simulation softwares to array carry out emulation experiment, and between adjacent cells away from
From being optimized, good scanning effect has been finally obtained.
The present invention passes through simple structure design and feedback by the use of the microstrip antenna under higher modes work as radiating element
Electric form has encouraged necessary higher mode, so as to obtain broad beam radiation effect, and its two dimension is organized battle array, realizes two-dimentional wide-angle
Scanning.Specific experiment the result shows that：The two-dimensional scan beam main lobe maximum direction of phased array can cover ± 30 °~± 60 °, sweep
Beam gain flatness is retouched to be controlled within 3dB, entire two-dimensional scan 3dB beam coverages can cover ± 15 °~±
90°。
Description of the drawings
Fig. 1 covers microstrip antenna structure figure for broad beam of the present invention；
Fig. 2 is wide-angle scanning Phased Array Antenna structure chart of the present invention；
Fig. 3 is the simulated return loss that broad beam of the present invention covers microstrip antenna；
Fig. 4 is the directional diagram that broad beam of the present invention covers microstrip antenna；
Fig. 5 is the XOZ Surface scan directional diagrams of wide-angle scanning Phased Array Antenna of the present invention.
Fig. 6 is the YOZ Surface scan directional diagrams of wide-angle scanning Phased Array Antenna of the present invention.
In figure：1. radiation patch, 2. medium substrates, 3. metal ground plates, 4. coaxial feed ports, 5. microstrip feed lines.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
The centre frequency of phased array antenna work is 5.8GHz, phased array antenna unit structure such as Fig. 1 (a), (b), is wrapped
Include medium substrate 2, radiation patch 1, microstrip feed line 5, with the metal ground plate 3 of dielectric-slab area equation and coaxial feed port
4。
As shown in Fig. 1 (a), the square patch slotted centered on the radiation patch, size is length of side wo=17.2mm,
Groove length of side ws=5.2mm.Medium substrate uses dielectric constant as 4.4, and thickness is the FR4 materials of 1mm, length of side w=50mm,
Metal floor is bonded with dielectric-slab, and size is identical.Symmetrical gradual change type microstrip feed line, is set to radiation centered on microstrip feed line 5
In patch groove, center is distributing point, and connection coaxial inner conductor feeds patch, and specific size is center line width
0.8mm, 50 Europe of characteristic impedance, the wide 0.32mm in most thin place, end positions line width 0.27mm, 100 Europe of characteristic impedance.
Unit is carried out after rationally arranging, the two-dimentional wide-angle scanning for devising 4 × 4 structures as shown in Figure 2 is phased
Array antenna, the center spacing of adjacent cells is 25mm.
Modeling and simulating, simulated return loss are carried out to the phased array antenna unit using CST Microwave Studio
As shown in figure 3, figure acceptance of the bid shows -10dB datum lines.It can be seen from the figure that the Antenna Operation is in 5.8GHz, return loss
For -35dB, in 5.77~5.83GHz frequency ranges, the return loss of phased array antenna is respectively less than -10dB.
Fig. 4 gives antenna pattern of the broad beam antenna in XOZ faces and YOZ faces.Its radiation is an annular shape,
Its 3dB beam angle is ± 35 °~± 90 ° on XOZ and YOZ faces.
Scan pattern of the phased array antenna in XOZ faces and YOZ faces is set forth in Fig. 5 and Fig. 6.Tables 1 and 2 is distinguished
XOZ faces and YOZ Surface scan directional diagram related datas are listed in detail.As can be seen from the table, phased array antenna of the present invention exists
± 15 °~± 85 ° of XOZ faces joint 3dB beam angles range covering, ± 15 ° of YOZ faces joint 3dB beam coverages covering~
±90°。
Table 1XOZ surface radiation directional diagram gain performances
Table 2YOZ surface radiation directional diagram gain performances
Claims (3)
1. a kind of two dimension broad beam antenna unit, radiation patch and microstrip feed line including medium substrate, set on substrate front side are set
In the metal ground plate of substrate back, it is characterised in that：The radiation patch is square, and center is overlapped with substrate center,
Radiation patch center is provided with square indentations；
The microstrip feed line is the centrosymmetric gradual change type microstrip feed line being set in radiation patch groove, and center is
Distributing point, two ends are connected respectively with the pair of horns of groove；
The antenna element is connected by coaxial feeding, coaxial inner conductor across substrate with distributing point, outer conductor and ground connection
Plate is connected.
2. a kind of two-dimentional broad beam antenna unit as described in claim 1, it is characterised in that：The size of the metal ground plate
It is identical with the size of substrate.
3. a kind of two-dimentional broad beam antenna unit as described in claim 1, it is characterised in that：The antenna element is equidistantly arranged
The two-dimentional broad beam array antenna of row composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510955721.2A CN105552538B (en) | 2015-12-17 | 2015-12-17 | A kind of two dimension wide-angle plane of scanning motion phased array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510955721.2A CN105552538B (en) | 2015-12-17 | 2015-12-17 | A kind of two dimension wide-angle plane of scanning motion phased array antenna |
Publications (2)
| Publication Number | Publication Date |
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| CN105552538A CN105552538A (en) | 2016-05-04 |
| CN105552538B true CN105552538B (en) | 2018-06-19 |
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| CN201510955721.2A Expired - Fee Related CN105552538B (en) | 2015-12-17 | 2015-12-17 | A kind of two dimension wide-angle plane of scanning motion phased array antenna |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149087B (en) * | 2018-08-22 | 2020-10-09 | 广东工业大学 | Low-profile high-gain ultra-wideband antenna |
| CN110867651A (en) * | 2019-11-22 | 2020-03-06 | 哈尔滨工业大学（威海） | Zero-order resonance patch antenna and transmission type low-cost monopulse phased array antenna device |
| CN113054403B (en) * | 2019-12-26 | 2022-06-10 | 华为技术有限公司 | Electronic device |
| CN112038780A (en) * | 2020-09-18 | 2020-12-04 | 上海无线电设备研究所 | Frequency reconfigurable antenna unit and antenna array based on sub-wavelength fractal metamaterial |
| CN112909529B (en) * | 2021-02-09 | 2022-01-28 | 山西大学 | Two-dimensional multi-beam super-surface antenna capable of realizing wide-band and wide-angle scanning |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6346913B1 (en) * | 2000-02-29 | 2002-02-12 | Lucent Technologies Inc. | Patch antenna with embedded impedance transformer and methods for making same |
| CN203503789U (en) * | 2013-10-28 | 2014-03-26 | 唐山赛福特智能控制股份有限公司 | Subsize circular polarization ultrahigh frequency RFID reader fractal antenna |
-
2015
- 2015-12-17 CN CN201510955721.2A patent/CN105552538B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6346913B1 (en) * | 2000-02-29 | 2002-02-12 | Lucent Technologies Inc. | Patch antenna with embedded impedance transformer and methods for making same |
| CN203503789U (en) * | 2013-10-28 | 2014-03-26 | 唐山赛福特智能控制股份有限公司 | Subsize circular polarization ultrahigh frequency RFID reader fractal antenna |
Non-Patent Citations (1)
| Title |
|---|
| "Study on Planar Wide-scan Phased Array";YANG Guangwei等;《Microwave Conference (APMC), 2015 Asia-Pacific 》;20151209;全文 * |
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