CN110048221A - Strip line network low section close coupling ultra wide band array antenna - Google Patents
Strip line network low section close coupling ultra wide band array antenna Download PDFInfo
- Publication number
- CN110048221A CN110048221A CN201910198760.0A CN201910198760A CN110048221A CN 110048221 A CN110048221 A CN 110048221A CN 201910198760 A CN201910198760 A CN 201910198760A CN 110048221 A CN110048221 A CN 110048221A
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- Prior art keywords
- strip line
- radiating doublet
- array antenna
- wide band
- close coupling
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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
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention provides a kind of strip line network low section close coupling ultra wide band array antennas, it is characterized in that, the array antenna includes one or more array elements, the array element includes the first radiating doublet (1), feeding network (2), second radiating doublet (3), high frequency laminate (6), it supports metab (9), feeding network (2) is arranged in the first radiating doublet (1), between second radiating doublet (3) and pass through high frequency laminate (6) connection the first radiating doublet (1), second radiating doublet (3), first radiating doublet (1), feeding network (2), support metab (9) is provided in the middle part of second radiating doublet (3), each array element is by supporting metab (9) to be sequentially connected.For the more existing close coupling array of the present invention, it can be achieved that wide-angle scans under conditions of active standing-wave ratio is less than 2.2, and structure is simple, is easy to make.
Description
Technical field
The present invention relates to antenna technical fields, more particularly to a kind of strip line network low section close coupling ultra wide band array
Antenna.
Background technique
With the rapid development of wireless communication technique, mobile communication becomes more and more important as common signal intelligence.
Especially to the scanning range of array beams, bandwidth, etc. performances requirement it is higher and higher.So to wide bandwidth and wave beam
The requirement of the aerial arrays of performances such as wide-angle scanning is more stringent, and in order to inhibit the appearance of graing lobe, the size of array elements is needed
It is less than the half of highest frequency corresponding wavelength.Traditional ultra wide band array technique is constantly being broken through always, but is still remained and cutd open
The disadvantages of face is high, is not easy to Integration Design.
Application No. is 201810742447.4 application documents to disclose a kind of low section CTS flat plate array antenna, including
Radiating layer, mode conversion layer and the transmission network network layers being arranged successively from top to bottom, the mode conversion layer include the first metal
Plate and the mode conversion chamber array that the first metal plate upper surface is arranged in, the mode convert chamber array packet
Include 22nA mode conversion chamber, 22nA mode conversion chamber is according to 2nRow × 2nThe mode of column is arranged, and n is more than or equal to 1
Integer, mode convert chamber and include sequentially connected first rectangular cavity, the second rectangular cavity, third rectangular cavity, the 4th square from left to right
Shape chamber and the 5th rectangular cavity, positioned at the 2 of same a linenA mode conversion chamber is sequentially connected end to end.Although having wider frequency
Band, but structure is complicated, not easy to manufacture.
Through searching document, close coupling array can better meet performance requirement.Close coupling thought can be traced earliest
Nineteen sixty-five Wheeler teaches in document " Simple relations derived for a phased-array antenna
It is proposed in made of an infinite current sheet " current sheet array antenna (Current Sheet Array,
CSA), but CSA was only the ideal model in theory at that time.Since ideal CSA has broadband character and wide-angle
Scan characteristic, professor Munk is by being described as compact arranged short dipole battle array, and the international electric wave in 2003 for physical model
It propagates and has delivered " A low-profile broadband phased array antenna " in antenna meeting, pass through raising
Coupled capacitor between adjacent array element can improve the bandwidth performance of array.Shanghai Communications University Bai Xudong international electric wave in 2014
It propagates and delivers " Improved coupled ultra-wideband dual-polarized antenna in antenna meeting
Array with corrugated ground ", which proposes a kind of channel form back board structure that can inhibit surface wave, real
The improvement of directional diagram and gain is showed.
However, the close coupling array largely studied at present realizes beam scanning angle by introducing matching layer or FSS structure
Degree reaches 60 °, and impedance bandwidth reaches 4.5:1, haves the defects that structure is complicated, not easy to manufacture.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of strip line network low section close coupling ultra-wide
Band array antenna.
A kind of strip line network low section close coupling ultra wide band array antenna provided according to the present invention, the array antenna
Including one or more array elements, the array element includes the first radiating doublet, feeding network, the second radiating doublet, height
Frequency dielectric-slab, support metab, feeding network are arranged between the first radiating doublet, the second radiating doublet and are situated between by high frequency
Scutum connects the first radiating doublet, the second radiating doublet, and the first radiating doublet, feeding network are set in the middle part of the second radiating doublet
It is equipped with support metab, each array element is by supporting metab to be sequentially connected.
Preferably, the feeding network includes class strip line minor matters, stripline power divider, the connection of class strip line minor matters
The upper end of stripline power divider, the lower end of stripline power divider and coaxial fitting connection realize feed.
Preferably, the stripline power divider uses Wilkinson structure.
Preferably, first radiating doublet, the second radiating doublet include radiating doublet unit, the radiating doublet list
Member include multiple printed dipoles, class strip line metal, stripline power divider metal, printed dipole both ends and class
It connects to strip line metal, is connect with stripline power divider metal to class strip line metal.
Preferably, the radiating doublet unit includes two concatenated printed dipoles, printed dipole and support metal
Pedestal is parallel；When each array element connects, two neighboring dipole arm is connected to form comb-shape structure.
Preferably, the class strip line minor matters of the printed dipole and feeding network pass through high frequency laminate capacitive coupling shape
At balanced feeding.
Preferably, branch is respectively positioned on to the printed dipole, class strip line metal with the class strip line minor matters of feeding network
It supports above metab, the one end and printed dipole of the class strip line minor matters of feeding network are relative to high-frequency dielectric two sides position
It sets relationship to correspond to, the other end of the class strip line minor matters of feeding network is with class strip line metal relative to high-frequency dielectric two sides
Positional relationship is corresponding；
The stripline power divider of the feeding network is located at below support metab and is connected by high frequency laminate
With connecing the stripline power divider metal of the first radiating doublet and the second radiating doublet.
Preferably, first radiating doublet, the second radiating doublet are symmetricly set on the two sides of feeding network.
Preferably, fluting, stripline power divider, the high frequency of feeding network are provided among the support metab
It passes through to the stripline power divider metal of dielectric-slab, the first radiating doublet and the second radiating doublet fluting and extends to support gold
Belong to below pedestal.
Preferably, the array antenna beam scanning range is more than ± 60 °, and relative impedances bandwidth stably reaches 4.5:1, and
Corresponding active standing-wave ratio is smaller than 2.2.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, structure is simple for the existing close coupling array of the present invention, easy to process, and has low section, ultra wide band, sweeps greatly
Retouch angle, the features such as, efficiently solve the complicated defect of existing close coupling array antenna production.
2, array of the present invention can be realized in the impedance bandwidth of 4.5:1 without loading FSS or wide-angle matching layer, have
Source standing-wave ratio reaches 60 ° less than the face 2.2, E beam-scanning angles.
3, the present invention is motivated using capacitive coupling, is avoided welding, is improved the bandwidth of antenna.
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 the structural diagram of the present invention.
Fig. 2 is array element schematic perspective view of the present invention.
Fig. 3 is array element positive structure schematic of the present invention.
Fig. 4 is array element front cross-sectional structural schematic diagram of the present invention.
Fig. 5 is the first radiating doublet of array element of the present invention, feeding network, the second radiating doublet structural schematic diagram.
Fig. 6 is array element side structure schematic view of the present invention.
Fig. 7 is beam scanning schematic diagram of the present invention.
Fig. 8 is gain pattern of the present invention when 2.9GHz frequency point E surface wave beam scanning is to 0 °, -33 °, -48 °, -60 °.
Active standing wave ratio characteristic when Fig. 9 is E Surface scan of the present invention.
Gain curve when Figure 10 is different scanning angle of the present invention, scanning angle include 0 °, 33 °, 48 °, 60 °.
Radiation efficiency when Figure 11 is different frequency of the present invention.
Figure 12 is that normal direction of the present invention is main polarization and cross polarization gain pattern.
Figure 13 is main polarization and cross polarization gain pattern of the present invention at -60 °.
It is shown in figure:
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.In the description of the present application, it is to be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
The present invention provides a kind of strip line network low section close coupling ultra wide band array antennas, are applied to the communication technology and lead
Domain, such as mobile communication system.Antenna array unit is made of two layers of radiating doublet and one layer of feeding network 2, every layer of radiation vibration
Attached bag contains two concatenated printed dipoles 7, and feeding network 2 is made of stripline power divider 5 and class strip line minor matters 4.
Energisation mode is that class strip line minor matters 4 feed printed dipole 7 by capacitive coupling, printed dipole 7 and class strip line gold
Possession 8 is connected, to alleviate the interference of common-mode signal to a certain extent.For the more existing close coupling array of the present invention, having
, it can be achieved that wide-angle scans under conditions of source standing-wave ratio is less than 2.2, and structure is simple, is easy to make.The present invention has low cut open
The features such as face, ultra wide band, high scan angles, simple structure.The present invention can effectively handle existing close coupling array antenna system
Make complicated defect.
A kind of strip line network low section close coupling ultra wide band array antenna provided according to the present invention, the array antenna
Including one or more array elements, the array element include the first radiating doublet 1, feeding network 2, the second radiating doublet 3,
High frequency laminate 6, support metab 9, feeding network 2 are arranged between the first radiating doublet 1, the second radiating doublet 3 and lead to
It crosses high frequency laminate 6 and connects the first radiating doublet 1, the second radiating doublet 3, the first radiating doublet 1, feeding network 2, second radiate
The middle part of oscillator 3 is provided with support metab 9, and each array element is by supporting metab 9 to be sequentially connected.It is described band-like
Gauze network low section close coupling ultra wide band array antenna is One Dimension Periodic array antenna structure, passes through array element periodic arrangement group
At the size of array element is 30mm × 30mm × 30mm.
The feeding network 2 includes class strip line minor matters 4, stripline power divider 5,4 connecting band of class strip line minor matters
The upper end of shape linear heat generation rate distributor 5, the lower end of stripline power divider 5 and coaxial fitting connection realize feed.Described
Stripline power divider 5 uses Wilkinson structure, will be divided into two-way in-phase signal by signal all the way, and realize impedance
Matching feature.
First radiating doublet 1, the second radiating doublet 3 include radiating doublet unit, the radiating doublet unit packet
With including multiple printed dipoles 7, class strip line metal 8, stripline power divider metal 10, printed dipole 7 is close to two
End with class strip line metal 8 is connect, or perhaps printed dipole 7 with class strip line metal 8 is connect close to end, class
8 with stripline power divider metal 10 it connect to strip line metal.Close to 7 end of printed dipole (both ends) and class
8 it is connected to strip line metal, reduces influence of the common-mode effect to antenna, alleviate the interference of common-mode signal.The radiating doublet
Unit includes two concatenated printed dipoles 7, and printed dipole 7 is parallel with support metab 9；Each array element connection
When, two neighboring 7 arm of dipole is connected to form comb-shape structure.The class strip line branch of the printed dipole 7 and feeding network 2
Section 4 forms balanced feeding by 6 capacitive coupling of high frequency laminate.Feed uses class strip line capacitive coupling, introduces coupled capacitor,
Improve the bandwidth of aerial array.It 8 is combined with printed dipole 7 to class strip line minor matters 4, class strip line metal, has both realized resistance
Anti- matching, and realize imbalance-balanced feeding.The printed dipole 7, class strip line metal 8 with the class band of feeding network 2
Shape line minor matters 4 are respectively positioned on 9 top of support metab, the one end and printed dipole of the class strip line minor matters 4 of feeding network 2
7 is corresponding relative to 6 two sides positional relationship of high-frequency dielectric, the other end of the class strip line minor matters 4 of feeding network 2 and class strip line
Metal it is 8 corresponding relative to 6 two sides positional relationship of high-frequency dielectric；
The stripline power divider 5 of the feeding network 2 is located at 9 lower section of support metab and passes through high frequency laminate
6 connection the first radiating doublets 1 and the second radiating doublet 3 stripline power divider metal 10.First radiating doublet
1, the second radiating doublet 3 is symmetricly set on the two sides of feeding network 2.It is provided with fluting among the support metab 9, is fed
The stripline power divider 5 of network 2, high frequency laminate 6, the first radiating doublet 1 and the second radiating doublet 3 band-like linear heat generation rate
10 passes through fluting and extend to support metab 9 lower section to distributor metal.
The array antenna beam scanning range is more than ± 60 °, and relative impedances bandwidth stably reaches 4.5:1, and corresponding
Active standing-wave ratio is smaller than 2.2.When wave beam normal direction radiates, array cell sizes are 0.09 λl×0.0.09λl×0.09λl,
In, λlThe wavelength of free space is corresponded to for lowest operating frequency.Section of the present invention is about 0.09 times of wavelength of lowest operating frequency,
Has the characteristics that low section.For the more existing close coupling array of the present invention, structure is simple, realizes wide-angle scanning, and different
Bandwidth when angle scanning is more stable, and active standing-wave ratio is respectively less than 2.2.
Working principle of the present invention is as follows: high-frequency signal first passes through two that signal is divided by stripline power divider 5
Road signal, every road signal pass through class strip line again and continue up transmission, after reaching class strip line minor matters 4 i.e. aerial head, pass through
Energy is coupled to printed dipole 7 by capacitive coupling, by the outside radiation energy of printed dipole 7, due to using strip line
Small, antenna efficiency height is lost in transmission.
Preferably, as shown in Figure 1, Figure 7 shows, strip line network low section close coupling ultra wide band array antenna X-direction is 17
Array element, Y-direction are set as cycle boundary.When each array element constant amplitude, cophase detector, normal beam A1 is obtained；Work as phase
When adjacent array element is motivated according to certain phase difference, wave beam realizes scanning.The scan pattern of array is as shown in figure 8, Fig. 8 is the present invention
The gain pattern emulated when 2.9GHz frequency point E surface wave beam scanning is to 0 °, -33 °, -48 °, -60 °, can from figure
Out, the face the E beam-scanning angles of the array can reach ± 60 °, and sidelobe level is less than -10dB.Fig. 9 is the present embodiment emulation
Obtained active standing-wave ratio, it can be seen from the figure that the corresponding active standing-wave ratio in different scanning angle is in 0.95~4.3GHz frequency band
Interior to be respectively less than 2.2, i.e., the active standing-wave ratio in entire frequency band is respectively less than 2.2.Figure 10 is the difference that the present embodiment emulates
The yield value of frequency point and different scanning angle.Figure 11 show the radiation efficiency figure of the present embodiment normal beam, and antenna efficiency exists
Entire frequency range all maintains 85% or more.Figure 12, Figure 13 are the main polarization and cross polarization far field spokes that the present embodiment emulates
Directional diagram is penetrated, it can be seen from the figure that cross polarization level is respectively less than -20dB.
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 (10)
1. a kind of strip line network low section close coupling ultra wide band array antenna, which is characterized in that the array antenna includes one
A or multiple array elements, the array element include the first radiating doublet (1), feeding network (2), the second radiating doublet (3),
High frequency laminate (6), support metab (9), feeding network (2) are arranged in the first radiating doublet (1), the second radiating doublet
(3) the first radiating doublet (1), the second radiating doublet (3), the first radiating doublet are connected between and by high frequency laminate (6)
(1), feeding network (2), support metab (9) is provided in the middle part of the second radiating doublet (3), each array element passes through branch
Support metab (9) is sequentially connected.
2. strip line network low section close coupling ultra wide band array antenna according to claim 1, which is characterized in that described
Feeding network (2) includes class strip line minor matters (4), stripline power divider (5), and class strip line minor matters (4) connect strip line
The upper end of power divider (5), the lower end of stripline power divider (5) and coaxial fitting connection realize feed.
3. strip line network low section close coupling ultra wide band array antenna according to claim 2, which is characterized in that described
Stripline power divider (5) use Wilkinson structure.
4. strip line network low section close coupling ultra wide band array antenna according to claim 1, which is characterized in that described
First radiating doublet (1), the second radiating doublet (3) include radiating doublet unit, and the radiating doublet unit includes multiple prints
Brush dipole (7), class strip line metal ground (8), stripline power divider metal ground (10), printed dipole (7) both ends with
Class strip line metal (8) connection, class strip line metal (8) with stripline power divider metal (10) connect.
5. strip line network low section close coupling ultra wide band array antenna according to claim 4, which is characterized in that described
Radiating doublet unit includes two concatenated printed dipoles (7), and printed dipole (7) is parallel with support metab (9)；Often
When a array element connects, two neighboring dipole (7) arm is connected to form comb-shape structure.
6. strip line network low section close coupling ultra wide band array antenna according to claim 4, which is characterized in that described
The class strip line minor matters (4) of printed dipole (7) and feeding network (2) are formed by high frequency laminate (6) capacitive coupling and are balanced
Feed.
7. strip line network low section close coupling ultra wide band array antenna according to claim 4, which is characterized in that described
Printed dipole (7), class strip line metal the class strip line minor matters (4) of (8) and feeding network (2) be respectively positioned on support metal bottom
Above seat (9), the one end of the class strip line minor matters (4) of feeding network (2) and printed dipole (7) are relative to high-frequency dielectric
(6) two sides positional relationship is corresponding, and the other end of the class strip line minor matters (4) of feeding network (2) is with class strip line metal (8)
It is corresponding relative to high-frequency dielectric two sides (6) positional relationship；
The stripline power divider (5) of the feeding network (2) is located at below support metab (9) and passes through high-frequency dielectric
Plate (6) is with connecting the stripline power divider metal of the first radiating doublet (1) and the second radiating doublet (3) (10).
8. strip line network low section close coupling ultra wide band array antenna according to claim 1, which is characterized in that described
First radiating doublet (1), the second radiating doublet (3) are symmetricly set on the two sides of feeding network (2).
9. strip line network low section close coupling ultra wide band array antenna according to claim 1, which is characterized in that described
Be provided with fluting among support metab (9), the stripline power divider (5) of feeding network (2), high frequency laminate (6),
The stripline power divider metal of first radiating doublet (1) and the second radiating doublet (3) (10) pass through fluting extend to branch
It supports below metab (9).
10. strip line network low section close coupling ultra wide band array antenna according to claim 1, which is characterized in that institute
Stating array antenna beam scanning range is more than ± 60 °, and relative impedances bandwidth stably reaches 4.5:1, and corresponding active standing-wave ratio
Smaller than 2.2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910198760.0A CN110048221A (en) | 2019-03-15 | 2019-03-15 | Strip line network low section close coupling ultra wide band array antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910198760.0A CN110048221A (en) | 2019-03-15 | 2019-03-15 | Strip line network low section close coupling ultra wide band array antenna |
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| CN110048221A true CN110048221A (en) | 2019-07-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317105A (en) * | 2017-07-02 | 2017-11-03 | 中国航空工业集团公司雷华电子技术研究所 | A kind of broadband closely coupled antennae module and broadband closely coupled antennae array |
| 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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| CN208522072U (en) * | 2018-07-24 | 2019-02-19 | 复旦大学 | The closely coupled antennae battle array of broadband and wideangle low section |
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2019
- 2019-03-15 CN CN201910198760.0A patent/CN110048221A/en active Pending
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| CN107317105A (en) * | 2017-07-02 | 2017-11-03 | 中国航空工业集团公司雷华电子技术研究所 | A kind of broadband closely coupled antennae module and broadband closely coupled antennae array |
| CN108682953A (en) * | 2018-03-19 | 2018-10-19 | 南京理工大学 | A kind of ultra wide bandwidth angle closely coupled antennae |
| CN108987915A (en) * | 2018-07-12 | 2018-12-11 | 中国船舶重工集团公司第七二四研究所 | One kind being based on close coupling technology ultra wideband dual polarization cylinder antenna battle array |
| CN208522072U (en) * | 2018-07-24 | 2019-02-19 | 复旦大学 | The closely coupled antennae battle array of broadband and wideangle low section |
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Application publication date: 20190723 |