CN205723949U - A kind of K-band Microstrip Antenna Array - Google Patents
A kind of K-band Microstrip Antenna Array Download PDFInfo
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- CN205723949U CN205723949U CN201620398729.3U CN201620398729U CN205723949U CN 205723949 U CN205723949 U CN 205723949U CN 201620398729 U CN201620398729 U CN 201620398729U CN 205723949 U CN205723949 U CN 205723949U
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- microstrip
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Abstract
This utility model provides a kind of K-band Microstrip Antenna Array, belongs to field of antenna, dielectric-slab is arranged and is parallel to each other and identical 3 array antennas of structure, respectively launch antenna, the first reception antenna and the second reception antenna；The antenna of every string is provided with several microband antenna units, some 1/4 wave microstrip feeder lines, power divider and feed port；Several impedance transformers, some microstrip transmission lines and some feed folding lines are had in power divider；Metal ground plate it is provided with bottom dielectric-slab；The capacity of resisting disturbance that this utility model designs a kind of K-band micro-strip array antenna is higher, so that detection mobile object is more accurate.
Description
Technical field
This utility model relates to field of antenna, specifically relates to a kind of K-band microband paste sky
Linear array.
Background technology
K-band microstrip antenna array has many application markets, and typical application has on expressway locomotive
Test the speed, find range and detect its angle, and also can apply to the blind monitoring of automobile；Vehicle flowrate
Detection, traffic monitoring, traffic lights control；Mobile object detects；Safety monitoring device, crashproof control,
Engineering radar for backing car；Parking stall is monitored, automobile active safety control loop etc..
K-band micro-strip array antenna is in automobile anti-collision radar system is applied, and antenna may be mounted at vapour
The side of car, front end or rear end, launch antenna and launch signal, by the mobile object reflection to signal
Process it to launch and the time difference received and angle change, it is judged that the distance between object, translational speed,
Orientation etc.；Thus judge that it, whether in safe distance scope, sends signal by control system, control
Slow down or accelerate.K-band microstrip array antenna design beam angle, determines the coverage of road,
Wherein, the horizontal lobe width of antenna determines road cover width, and vertical lobe width then determines to bow
Elevation angle degree, and radiation length is determined by antenna gain and post processing electric circuit.Due to K-band microstrip array
Application in terms of array antenna car radar at home is also in developmental stage, in order to provide this one side
Product demand and design the K-band micro-strip array antenna of a kind of vehicle radar system.Existing external car
It is the most right that the K-band micro-strip array antenna that type uses tends not in the application of automobile anti-collision radar system
This track effectively covers, and also can interfere adjacent lane, so that automobile collision preventing
Radar system judges that vehicle heading is inaccurate, it is impossible to more preferably preventing contingency from occurring, detection range is relatively
Short, it is impossible on the track run at high speed, relatively remote vehicle to be detected, thus can not carry in time
Awake human pilot makes safety operation.Accordingly, it would be desirable to design one to have capacity of resisting disturbance higher, inspection
Range finding, from farther, detects orientation K-band micro-strip array antenna more accurately.
Utility model content
What this utility model needed to solve is existing K-band micro-strip array antenna capacity of resisting disturbance strong and
Detection problem more accurately, it is provided that a kind of K-band Microstrip Antenna Array.
This utility model solves the problems referred to above by the following technical programs:
A kind of K-band Microstrip Antenna Array, dielectric-slab is arranged and is parallel to each other and the identical 3 row skies of structure
Line, respectively launches antenna, the first reception antenna and the second reception antenna；
The antenna of every string is provided with several microband antenna units, some 1/4 wave microstrip feeder lines, merits
Rate allotter and feed port；Several impedance transformers, some micro-strip are had to pass in power divider
Defeated line and some feed folding lines；With in the antenna of string, feed port is arranged on the sky of every string
The midpoint of line, upper and lower two microband antenna units of feed port are divided with power by 1/4 wave microstrip feeder line
Two delivery outlets of orchestration connect；Other microband antenna unit is all logical with each delivery outlet of power divider
Cross 1/4 wave microstrip feeder line and feed folding line connects；By impedance transformation between adjacent microband antenna unit
Device is connected with microstrip transmission line；The microband antenna unit of each array antenna is arranged on the same line；
The microband antenna unit of each array antenna is from centre to both sides, and the distance between microband antenna unit is gradually
Increase；Metal ground plate it is provided with bottom dielectric-slab.
In order to make secondary lobe effectively reduce such that it is able to reduce noise jamming, antenna is allowed to receive spirit
Sensitivity improves, and in such scheme, the number of the microband antenna unit of preferably every array antenna is even number,
Distance between the microband antenna unit of feed port both sides is a, feed port both sides microband antenna unit
Distance between both sides extension microband antenna unit is b, c and d, and the distance between microband antenna unit is closed
System is a <b < c < d.
Facilitate follow-up increase circuit control system ground connection, and be correspondingly improved the bandwidth of antenna, on
Stating in scheme, preferably dielectric-slab surrounding is additionally provided with plated-through hole.
Feeding for convenience, in such scheme, preferably feed port uses the contact pin of back of the body feedback mode
Feed.
Improving the performance of antenna in such scheme further, preferably every array antenna has the even number of 6-12
Individual microband antenna unit.
In order to reduce interfering of dual-mode antenna battle array feed port, improve isolation each other,
In such scheme, on the premise of as far as possible reducing antenna overall dimensions, preferably launch antenna and the
One reception antenna is at a distance of 11mm, with the second reception antenna at a distance of 17mm.
Advantage of the present utility model with effect is:
1, by each microband antenna unit being arranged different excitation amplitude, set between antenna element
Put different spacing, make the minor level of antenna less than or equal to-20dB so that the capacity of resisting disturbance of antenna
Strengthening, sensitivity is higher；
2, the sets of numbers by controlling different antennae unit becomes aerial array, change antenna gain and
The size of the current amplitude of each unit, realizes detecting different objects or realizing difference in functionality；
3, this aerial array is made up of 1 transmitting antenna and 2 reception antennas so that it is judge object
Translational speed, the size of distance, orientation are more accurate；
4, by setting metalized ground hole in dielectric-slab surrounding, follow-up increase circuit is facilitated to control system
System ground connection, and accordingly increased the bandwidth of antenna.
Accompanying drawing explanation
Fig. 1 is antenna array structural representation of the present utility model.
Fig. 2 is earth plate structure chart of the present utility model.
Accompanying drawing illustrates: (1) launches antenna；(2) first reception antennas；(3) second receive sky
Line；(4) feed port；(5) microband antenna unit；(6) power divider；(6.1) resistance
Resistance parallel operation；(6.2) feed folding line；(6.3) microstrip transmission line；(7) ground hole；(8)
1/4 wave microstrip feeder line；(9) earth plate；(10) power feed hole；(11) ground connection mouth；a、b、
Distance between c, d microband antenna unit.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail.
A kind of K-band Microstrip Antenna Array, dielectric-slab is arranged and is parallel to each other and the identical 3 row skies of structure
Line, respectively launches antenna (1), the first reception antenna (2) and the second reception antenna (3),
Launch antenna (1) to be oppositely arranged with the first reception antenna (2) and the second reception antenna (3)；It is situated between
Scutum is set to rectangle or square, and when dielectric-slab is rectangle, its size is (48 × 62) mm,
User can also be adjusted size as required, and dielectric-slab is that nonconducting nonmetallic materials are made；
Dielectric-slab surrounding sets metalized ground hole (7), is provided with metal ground plate (9), connects bottom dielectric-slab
Floor (9) is formed around ground connection mouth (11), and wherein ground hole (7) is mutual corresponding with ground connection mouth (11)
, it facilitates follow-up increase circuit control system ground connection, and adds the bandwidth of antenna accordingly, as
Shown in Fig. 1, Fig. 2.
In order to reduce interfering of dual-mode antenna battle array feed port, improve isolation each other,
On the premise of reducing antenna overall dimensions, launch antenna (1) with the first reception antenna (2) apart as far as possible
11mm, with the second reception antenna (3) at a distance of 17mm, the first reception antenna (2) and the second reception antenna (3)
At a distance of 6mm.
Earth plate (9) is formed around ground connection mouth (11), and ground connection aperture (11) are positive and negative by ground hole (7)
The same through hole that face is corresponding, meets reality processing minimum dimension again to reduce loss as far as possible, connects
Hole, hole, ground interior diameter is set as that 3mm, hole overall diameter are 6mm.
Each array antenna battle array is provided with 8 microband antenna units (5), a multipath power distributor (6)
With feed port (4)；Several impedance transformers (6.1) and some feedbacks are had in power divider (6)
Electricity folding line (6.2), also plays the microstrip transmission line (6.3) of interconnection function；Sky with string
In line each microband antenna unit 5 all with each delivery outlet of power divider (6) by feed folding line
(6.2) connect；The smooth linear in existing technology being all connects, and is arranging unit interval
Time, in order to ensure the concordance of phase place, spacing between unit will necessarily be made relatively big, easily occur
Graing lobe, thus affect the radiance that antenna is overall, use the form of folding line can ensure phase place one
Effective spacing between control unit on the premise of cause property.By hindering between adjacent microband antenna unit (5)
Resistance parallel operation (6.1) is connected with microstrip transmission line (6.3)；The microstrip antenna list of each array antenna
Unit 5 is arranged on the same line；The microband antenna unit (5) of each array antenna from centre to both sides, micro-
Spacing between band antenna element (5) is gradually increased, and the spacing of microband antenna unit (5) is equidistant
, it is impossible to access preferable antenna side lobe level；By gradually increasing from centre to both sides unit interval
Big design, makes the minor level of antenna less than or equal to-20dB so that the capacity of resisting disturbance of antenna increases
By force；Microband antenna unit (5) is micro-strip paster antenna, and power divider (6) has multipath power and divides
Join and be attached with microband antenna unit (5), it is achieved the control to each different antennae unit input power
System, thus reach to design requirement.The number of the microband antenna unit (5) of every array antenna is to change
, this will be according to the specific requirement in Practical Project.Generally even numbers, makes transmitting and reception antenna
Antenna pattern is perpendicular to media plane, as shown in Figure 1.
Antenna element (5) spacing is gradually increased, diminish with equidistant or spacing compared with enable to pair
Lobe effectively reduces such that it is able to reduces noise jamming, allows antenna receiving sensitivity improve.Mainly adjust
Joint secondary lobe, is to allow its significantly more efficient reduction secondary lobe in the case of power-division ratios determines, makes anti-miscellaneous
The ability of wave interference is higher.On directivity requirement, it is also possible to being the radiation of different angles, this wants root
Design according to application request, so can reach the detection of the target to different angles.
With in the antenna of string, feed port 4 is arranged on the midpoint of the antenna of every string, feed port
(4) upper and lower two microband antenna units 5 are by 1/4 wave microstrip feeder line (8) and power divider (6)
Two delivery outlets connect；Other microband antenna unit (5) is all logical with each delivery outlet of power divider (6)
Cross 1/4 wave microstrip feeder line 8 and feed folding line (6.2) connects；Folding line (6.2) is to ensure that
The concordance of phase place under the situation that unit interval is gradually increased so that the vertical direction at antenna plane is protected
Card gain is maximum.In the case of there is no folding line, if the concordance of phase place to be ensured, will necessarily
Increasing the spacing between antenna, make antenna pattern produce graing lobe, radiant power can not concentrate on main lobe
On, affect radiation efficiency and receiving sensitivity.Feed folding line (6.2) ensures to a certain extent
Its unit interval adjusts and does not interferes with antenna performance within the specific limits.
The number of microband antenna unit (5) can add deduct along with the demand of user carries out the increasing of quantity
Few, it is increased or decreased with the number of even numbers, the increase of microband antenna unit (5), aerial radiation gain
Increase, radiation length is farther under the control of control circuit, thus meet speed very fast time, to vehicle
Longer-distance detection, thus remind car owner to make adjustment corresponding to speed in time.And this design
Add a microstrip antenna array receiving signal so that system is possible not only to detect the speed of mobile object
Degree and distance, it is also possible to the orientation of mobile object detected.Make the judgement to mobile object more smart
Really, it is substantially reduced probability of causing danger；Along with microband antenna unit (5) increases, some increases to make plate face
Greatly, in order to the installation of antenna not being produced impact, its size of the design is (48 × 62) mm, the fullest
Foot is at automobile anti-collision radar system.
Feed port (4) is arranged on the midpoint of the antenna of every string, feed port (4) input impedance size
Being set to conventional several, use the contact pin feed of back of the body feedback mode, aerial array feeding network passes through micro-strip
Transmission alignment each microband antenna unit feed, and each column antenna array individually feeds, each other
Set certain spacing, improve isolation between aerial array, reduce impact each other.
The design is mainly based upon the two-way minor matters feed of power divider (6), is based on connection in series-parallel phase
In conjunction with feeding classification, the spacing between microband antenna unit (5) is gradually increased.List can also be designed to
Limit series feed antenna formation formula, uses the mode of series feed to reach the index request of product design,
By microstrip transmission line and impedance transformer between its microband antenna unit (5) and microband antenna unit (5)
(6.1) it is joined directly together.Bilateral feed and monolateral feed are respectively arranged with its pluses and minuses.Bilateral feed design, be
It is divided into the two-way that both sides are symmetrical by power divider (6), can be due to symmetry in actual design emulates
Property structure, simplify the process of design when design, saved the time, but due in structure ratio monolateral
Series feed complexity, microstrip line is more, and energy loss is the most corresponding to be increased, and radiant power reduces, and affects sky
Linear energy.Monolateral series winding feed also can be as a part for transmission line due to its antenna element, structure phase
Should be simple, transmission line loss reduces than during bilateral feed, and radiation efficiency increases；But just because of knot
Simple on structure, the coupling for each impedance transformer therein requires higher so that each antenna
The current amplitude of unit is different from, and during design, Parameters variation amount also increases, and design difficulty carries accordingly
Height, designs time lengthening, can be on a sticky wicket in competition.
The micro-strip array antenna proposed in the design is used directly for the vehicle flowrate inspection of 24GHz frequency range
Survey, traffic monitoring, traffic lights control etc., it is also possible to for security protection intrusion detection, parking stall detection with
And work in the microwave telecommunication system of 24GHz frequency range.Additionally, the design pattern can be other microwaves
The micro-strip array antenna of frequency range provides design reference.
The proposition of the design has all carried out emulation and processing test in kind.In order to ensure to apply requirement to be less than
Equal to the antenna side lobe level of-20dB, the sidelobe level to Theoretical Calculation gives certain in the design
Surplus, is chosen as-25dB.In view of reducing the fabrication error impact on design, limit especially
Little use live width and spacing.In view of the accuracy of theoretical calculation model, critical impedometer is added
Go repeatedly theoretical derivation and more reasonably approximating.Limiting the use live width of maximum, this is favourable simultaneously
In ensureing the accuracy of computation model and reducing ghost effect.The antenna radiation pattern that indicated by theory,
Beam angle, sidelobe level, the reasonability of minimum and maximum live width, can easily judge whether oneself
Through reaching design object, and this how adjusted design parameter when not up to design object.And pass through
Object test, is completed Design Theory and emulation are carried out experimental verification, is revised by debugging, reach to refer to
Mark requirement.
Below the preferred embodiment created this utility model is illustrated, but this practicality is new
Type is not limited to embodiment, and those of ordinary skill in the art are without prejudice to this utility model creative spirit
On the premise of can also make modification or the replacement of all equivalents, the modification of these equivalents or replace all
It is included in scope of the present application.
Claims (7)
1. a K-band Microstrip Antenna Array, it is characterised in that: arrange on dielectric-slab and be parallel to each other
And identical 3 array antennas of structure, respectively launch antenna (1), the first reception antenna (2) and second
Reception antenna (3)；
The antenna of every string is provided with several microband antenna units (5), some 1/4 wave microstrip feedbacks
Line (8), power divider (6) and feed port (4)；Have some in power divider (6)
Individual impedance transformer (6.1), some microstrip transmission lines (6.3) and some feeds folding line (6.2)；
With in the antenna of string, feed port (4) is arranged on the midpoint of the antenna of every string, feed port
(4) upper and lower two microband antenna units (5) are distributed with power by 1/4 wave microstrip feeder line (8)
Two delivery outlets of device (6) connect；Other microband antenna unit (5) all with power divider (6)
Each delivery outlet by 1/4 wave microstrip feeder line (8) and feed folding line (6.2) connection；Adjacent micro-
It is connected with microstrip transmission line (6.3) by impedance transformer (6.1) between band antenna element (5)；
The microband antenna unit (5) of each array antenna is arranged on the same line；The micro-strip of each array antenna
Antenna element (5) is from centre to both sides, and the distance between microband antenna unit (5) is gradually increased；
Metal ground plate (9) it is provided with bottom dielectric-slab.
A kind of K-band Microstrip Antenna Array the most according to claim 1, it is characterised in that:
The number of the microband antenna unit (5) of described every array antenna is even number, feed port (4) both sides
Distance between microband antenna unit (5) is a, feed port (4) both sides microband antenna unit (5)
Distance between both sides extension microband antenna unit (5) is respectively b, c and d, microband antenna unit (5)
Between distance relation be a <b < c < d.
A kind of K-band Microstrip Antenna Array the most according to claim 1, it is characterised in that:
Dielectric-slab surrounding is additionally provided with metalized ground hole (7), and earth plate (9) is formed around ground connection mouth (11),
Ground connection mouth (11) is connected with ground hole (7) by metal wire.
A kind of K-band Microstrip Antenna Array the most according to claim 1, it is characterised in that:
The input reactance at described feed port (4) place matches with power divider.
A kind of K-band Microstrip Antenna Array the most according to claim 1, it is characterised in that:
Described feed port (4) uses the contact pin feed of back of the body feedback mode.
A kind of K-band Microstrip Antenna Array the most according to claim 1, it is characterised in that:
Described every array antenna has the even number microband antenna unit (5) of 6-12.
A kind of K-band Microstrip Antenna Array the most according to claim 1, it is characterised in that:
Described transmitting antenna (1) and the first reception antenna (2) are at a distance of 11mm, with the second reception antenna (3)
At a distance of 17mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620398729.3U CN205723949U (en) | 2016-05-05 | 2016-05-05 | A kind of K-band Microstrip Antenna Array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620398729.3U CN205723949U (en) | 2016-05-05 | 2016-05-05 | A kind of K-band Microstrip Antenna Array |
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| Publication Number | Publication Date |
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| CN205723949U true CN205723949U (en) | 2016-11-23 |
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| CN201620398729.3U Expired - Fee Related CN205723949U (en) | 2016-05-05 | 2016-05-05 | A kind of K-band Microstrip Antenna Array |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811113A (en) * | 2016-05-05 | 2016-07-27 | 桂林电子科技大学 | K-wave band microstrip patch antenna array |
| CN109548218A (en) * | 2018-11-20 | 2019-03-29 | 成都赛纳为特科技有限公司 | Patch antenna array microwave oven |
| CN109548216A (en) * | 2018-11-20 | 2019-03-29 | 成都赛纳为特科技有限公司 | Coaxial antenna battle array microwave oven |
| CN109548217A (en) * | 2018-11-20 | 2019-03-29 | 成都赛纳为特科技有限公司 | Transverse field patch antenna array microwave oven |
| CN112993593A (en) * | 2021-02-10 | 2021-06-18 | 清华大学 | Millimeter wave phased array antenna and mobile terminal |
-
2016
- 2016-05-05 CN CN201620398729.3U patent/CN205723949U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811113A (en) * | 2016-05-05 | 2016-07-27 | 桂林电子科技大学 | K-wave band microstrip patch antenna array |
| CN109548218A (en) * | 2018-11-20 | 2019-03-29 | 成都赛纳为特科技有限公司 | Patch antenna array microwave oven |
| CN109548216A (en) * | 2018-11-20 | 2019-03-29 | 成都赛纳为特科技有限公司 | Coaxial antenna battle array microwave oven |
| CN109548217A (en) * | 2018-11-20 | 2019-03-29 | 成都赛纳为特科技有限公司 | Transverse field patch antenna array microwave oven |
| CN112993593A (en) * | 2021-02-10 | 2021-06-18 | 清华大学 | Millimeter wave phased array antenna and mobile terminal |
| CN112993593B (en) * | 2021-02-10 | 2022-04-08 | 清华大学 | Millimeter wave phased array antenna and mobile terminal |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20190505 |
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| CF01 | Termination of patent right due to non-payment of annual fee |