CN106972244A - A kind of trailer-mounted radar array antenna - Google Patents
A kind of trailer-mounted radar array antenna Download PDFInfo
- Publication number
- CN106972244A CN106972244A CN201710114480.8A CN201710114480A CN106972244A CN 106972244 A CN106972244 A CN 106972244A CN 201710114480 A CN201710114480 A CN 201710114480A CN 106972244 A CN106972244 A CN 106972244A
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- trailer
- array antenna
- impedance matching
- matching network
- mounted radar
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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
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
-
- 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
- H01Q21/0075—Stripline fed arrays
-
- 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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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention provides a kind of trailer-mounted radar array antenna, including the radiation chip arrays and impedance matching network being arranged on same plane, and radiation chip arrays axle centered on impedance matching network is in both sides symmetry arrangement structure.The present invention uses new feeding network, the i.e. impedance matching based on microstrip line and phase shift principle, the relevant parameter demand of aerial radiation array is realized with simple way of realization, and then realize the optimization of product.The emulation of vehicle anti-collision radar array antenna debugs convenient and swift with antenna sample.Micro-strip impedance matching network and array antenna are placed in approximately the same plane, overall radar antenna section is not only reduced, and effectively have compressed dutycycle of the antenna feed section in trailer-mounted radar complete machine.This new design concept and design method, can break through the numerous and diverse feed power division network structure in traditional back side, be effectively reduced the electromagnetic interference to other radio-frequency devices, have far-reaching commercial application value in Practical Project.
Description
Technical field
The present invention relates to field of antenna, more particularly, to a kind of trailer-mounted radar array antenna.
Background technology
Pilotless automobile is to perceive road environment by vehicle-mounted sensor-based system, and automatic planning travelling line simultaneously controls vehicle
Reach the intelligent automobile of predeterminated target.It is that vehicle-periphery is perceived using onboard sensor, and is obtained according to perceiving
Road, vehicle location and obstacle information, control vehicle steering and speed, so as to enable the vehicle to reliably and securely exist
Travelled on road.Integrate automatically control, architecture, artificial intelligence, vision calculate etc. numerous technologies, be computer section
The product of, pattern-recognition and intelligent control technology high development, is also to weigh national a research strength and industrial level
One important symbol, has broad application prospects in national defence and national economy field.
Unmanned technology is the trend that future secure drives, and is linking active safety and unpiloted technology, is claimed
Be ADAS (Advanced Driver Assistance Systems) senior DAS (Driver Assistant System).Millimetre-wave radar is
A crucial ring for ADAS systems, it can provide lane change for driver and aid in, adaptive cruise, the function such as anti-collision warning, so as to carry
High driving comfort, reduces accident rate.The frequency for the echo that radar is received is identical with the frequency changing rule launched, and is all
Triangular wave rule, simply there is a time difference, and the frequency difference caused using this small time difference can calculate target range, angle
The parameter such as degree and speed.
Millimeter wave Vehicular radar system（Unmanned technology）One of Primary Component be exactly borne Millimeter Wave Collision Avoidance Radars array
Antenna system.The antenna system technical requirements：The work of high-gain, high radiation efficiency, narrow beam angle, and millimere-wave band
Bandwidth frequency range, small size, low section, low cost etc..The design and debugging difficulty of 24G Anticollision Radar aerial arrays compare
Greatly, and domestic rarely ripe case is used for reference.Above-mentioned technical requirements are reached at present, and corresponding structure can complicate, cost
Improve, be unfavorable for application.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of high-gain, low interference, high radiation efficiency car
Carry radar array antenna.
In order to solve the above technical problems, the technical scheme that the present invention is provided is：A kind of trailer-mounted radar array antenna, including set
Radiation chip arrays and the impedance matching network being placed on same plane, radiation chip arrays axle centered on impedance matching network
In both sides symmetry arrangement structure.Microstrip-fed matching network possesses the effect of phase adjusted and impedance matching, and is pasted with radiation
Chip arrays are in same plane, it is easy to integrated, reduce antenna dutycycle, it is possible to decrease traditional numerous and diverse matching network is to penetrating
The electromagnetic interference of frequency circuit, effectively reduces the adverse effect to other radio circuits.
It is preferred that, the impedance matching network is made up of microstrip line cabling.Impedance matching and phase are realized by microstrip line
Skew and phase adjusted,
It is further preferred that the impedance matching network includes power splitter, impedance transformer and Phaseshift controlling part, the phase shift
Control section includes the first Phaseshift controlling part acted on phase adjusted and the second Phaseshift controlling for producing 180 degree phase difference
Part.There is impedance matching to act on and then loss is reduced for impedance matching network, also with phase offset or phase-adjusted effect,
And then wave beam regulation is carried out to aerial radiation wave beam, 180 degree phase difference is realized, so that realize electric current in the same direction, Enhanced Radiation Reduced Blast gain；
Also possess the effect of power distribution, power usage efficiency can be improved by adjusting the part.
It is further preferred that the impedance transformer is rectangle cabling, the rectangular form of power splitter is arranged at resistance
The side of resistance parallel operation, the first Phaseshift controlling part and the second Phaseshift controlling part are connected in the form of bending cabling respectively
In the both sides of impedance transformer.Phase offset is realized using microstrip line bending form.
It is preferred that, the radiation chip arrays include the radiation fin concatenation unit that multigroup one end connects impedance matching network, often
Multiple length that group radiation fin concatenation unit includes being sequentially connected in series are identical, width by one end of connection impedance matching network laterally
The radiation fin successively decreased successively.Control radiation leaf length is identical, it is ensured that Antenna Operation is at resonant frequency, and by adjusting its width
Further to adjust impedance matching.
It is preferred that, the radiation chip arrays and impedance matching network are arranged at the one side of medium substrate, the impedance matching
Network is provided with single feed point, and the another side of the medium substrate sets electric feed signal transmitting device through the single feedback of medium substrate connection
Electricity.The back of the body feedback mode of single feed point is succinct and effectively reduces the influence to other radio circuits or device.
It is further preferred that electric feed signal transmitting device includes SMP-M joints, the SMP-M joints are transmitted by micro-strip
Line connects single feed point.The microstrip transmission line at the back side can carry out impedance matching between feed port and radiating curtain, effectively reduction
Energy consumption.Microstrip transmission line is simple with SMP-M interface structures, effectively reduction transmission loss and processing cost
It is further preferred that single microstrip transmission line end connects single feed point by the feed through hole that metallizes.It is single by connecting
Electric feed signal is transferred to impedance matching network and radiating curtain in top layer by feed, can effectively reduce feeding network institute duty
Between, and then reduce the interference to other radio circuits or device.
It is further preferred that the medium substrate is sandwich construction, the medium substrate of the sandwich construction is every between two layers
Supporting radio circuit design can be carried out provided with metal level, between flaggy.
It is further preferred that the medium substrate supplies metal provided with the diameter circular hole equal with metallization feed through hole external diameter
Change feed through hole to pass through, the circular groove that diameter is more than circular hole is opened up on the position of the metal level correspondence circular hole.Ensure energy
Smoothly transmission.
Compared with prior art, the invention has the advantages that：
The present invention provides a kind of trailer-mounted radar array antenna, it is adaptable to the 24G vehicle anti-collision radars array day of automotive safety avoidance
Line, is the emphasis and Technology Difficulties in following unmanned application, with small size, high main lobe radiation gain, efficiently
Sidelobe Suppression, narrow E surface radiations beam angle, wide H faces beam angle, the effect of high radiation efficiency, impedance matching net
Network and radiation chip arrays co-planar designs, it is easy to integrated.The vehicle radar antenna is operated in 24-24.25GHz impedance bandwidth model
In enclosing, the Antenna Design problem of high band is solved.The design of chip arrays is radiated, primary radiation gain can be not only improved, may be used also
Improve radiation directivity according to demand, and meet the demand to antenna complete machine small size.So as to which the application has high-gain,
Low section, high efficiency, E faces half-power radiation direction angle is less than 15 °, and the radiation gain in H face ± 45 ° is above 3dB, and
Many advantages, such as gain in direction is maximum near 25 °.The impedance matching network of the application carries out corresponding regulation meeting
The parameter requirements or performance requirement of different antennae product.The present invention is different from the numerous and diverse feeding network design in traditional back, is used as K
The antenna array design of wave band, the impedance matching network of the application is theoretical related to electromagnetism based on related impedance matching
Study to invent design, the feeding classification of its designing impedance matching coplanar with radiating curtain unit and single feed point effectively drops
The low interference to other radio circuits, improves its compatibility, in following unmanned technology or vehicle anti-collision radar system
Good application prospect is provided with system.
Trailer-mounted radar array antenna design disclosed in this invention combines feed using the array format of micro-strip radiation patch
The design of matching network.Solve complicated traditional antenna structure, processing cost and debugging difficulty than it is larger the problem of.Have
Single feed point, be easy to calculate regulation and low-cost advantage, be easy to the application of industrial products.
Brief description of the drawings
Fig. 1 is that the embodiment of the present invention radiates chip arrays and impedance matching network attachment structure schematic diagram.
Fig. 2 is impedance matching network structural representation of the embodiment of the present invention.
Fig. 3 is electric feed signal transmitting device structural representation of the embodiment of the present invention.
Fig. 4 is S11 simulation curve of aerial radiation of the embodiment of the present invention array element in 23GHz-25GHz, S11 emulation knots
Fruit shows that -10dB impedances band limits is 23.67GHz-24.26GHz.
Fig. 5 is simulated radiation directional diagram of aerial radiation of the embodiment of the present invention array element at 24GHz frequencies.
Fig. 6 is simulated radiation directional diagram of aerial radiation of the embodiment of the present invention array element at 24.125GHz frequencies.
Fig. 7 is simulated radiation directional diagram of aerial radiation of the embodiment of the present invention array element at 24.25GHz frequencies.
Wherein, 1 is radiation chip arrays, and 2 be impedance matching network, and 3 be SF single feed, and 11 be the first phase-shift curve, and 12 be the
Two phase-shift curves, 13 be that third phase moves curve, and 14 be the 4th phase-shift curve, and 15 be the 5th phase-shift curve, and 16 be that the 6th phase shift is bent
Line, 17 be the 7th phase-shift curve, and 18 be the 8th phase-shift curve, and 19 be the 9th phase-shift curve, and 21 be the first impedance transformer, and 22 are
Second impedance transformer, 23 be the 3rd impedance transformer, and 24 be the 4th impedance transformer, and 25 be the 5th impedance transformer, and 26 are
6th impedance transformer, 31 be the first power splitter, and 32 be the second power splitter, and 33 be the 3rd power splitter, and 34 be the 4th power splitter, 35
It is SMP-M joints for the 5th power splitter, 41,42 be blind hole, and 43 be microstrip transmission line, and 44 be metallization feed through hole.
Embodiment
For the ease of it will be appreciated by those skilled in the art that being carried out below in conjunction with accompanying drawing and embodiment to the present invention further
It is described in detail.
Present embodiment discloses a kind of 24G vehicle anti-collision radars array antenna, as shown in figure 1,24G vehicle anti-collisions can be used as
The transmitting terminal or receiving terminal of radar antenna, the present embodiment propose the new 24G/77G impedance matching nets of a class by taking transmitting terminal as an example
Network is designed, and this impedance matching form applied to transmitting terminal aerial array is based on microwave/millimeter wave impedance matching correlation reason
By what is found out.The array antenna includes the radiation chip arrays 1 rearranged by 5 × 10 radiation fins, and radiation chip arrays 1 are
Radiant section, sets impedance matching network 2, radiation chip arrays are with impedance matching network 2 on the same plane of radiation chip arrays 1
Centered on axle in the symmetrical serial arrangement in both sides, the radiation chip arrays include 10 groups of radiation fin concatenation units, each group of radiation
Piece concatenation unit includes five equal lengths being sequentially connected in series, and the present embodiment sets the length to be about 1/2 medium wavelength, it is ensured that spoke
Penetrate chip arrays to be operated at resonant frequency, the radiation fin that width successively decreases successively, the maximum radiation fin one end connection impedance of width
Distribution network 2, wherein, radiation fin is microband paste unit, and the overall dimensions of antenna are 65mm × 30mm, in the car similar with it
Carry in radar antenna and possess low dimensional advantage.
As shown in Fig. 2 impedance matching network is microstrip line cabling form, acted on phase shift adjustment and impedance matching, bag
Power splitter, impedance transformer, the first Phaseshift controlling part and the second Phaseshift controlling part are included, wherein, the rectangular form of power splitter,
Possess power distribution effect, power usage efficiency, including the first power splitter 31, the second work(point can be improved by adjusting the part
Device 32, the 3rd power splitter 33, the 4th power splitter 34 and the 5th power splitter 35, impedance transformer are rectangle cabling, possess impedance
Matching and reduction energy consumption effect, including the first impedance transformer 21, the second impedance transformer 22, the 3rd impedance transformer 23,
4th impedance transformer 24, the 5th impedance transformer 25 and the 6th impedance transformer 26；First Phaseshift controlling part and the second phase
It is bending cabling to move control section.Wherein, phase adjusted can be achieved in the first Phaseshift controlling part, and then to aerial radiation wave beam
Wave beam regulation is carried out, including the first phase-shift curve 11, the second phase-shift curve 12, third phase move the phase-shift curve of curve 13 and the 4th
14；180 degree phase difference can be achieved in second Phaseshift controlling part, it is therefore an objective to realize electric current in the same direction, Enhanced Radiation Reduced Blast gain, including the 5th
Phase-shift curve 15, the 6th phase-shift curve 16, the 7th phase-shift curve 17, the 8th phase-shift curve 18 and the 9th phase-shift curve 19.First
Power splitter 31, the first impedance transformer 21, the first phase-shift curve 11, the second impedance transformer 22, the second power splitter 32, the second phase
Move curve 12, the 3rd impedance transformer 23, the 3rd power splitter 33, third phase and move curve 13, the 4th impedance transformer 24, the 4th work(
Device 34, the 5th impedance transformer 25, the 4th phase-shift curve 14, the 6th impedance transformer 26 and the 5th power splitter 35 is divided to connect successively
Connect, single feed point 3, the first power splitter 31 and the first impedance transformer are connected between the second phase-shift curve and the 3rd impedance transformer 23
21 junction is also connected with the 5th phase-shift curve 15, and the junction of the second power splitter 32 and the second impedance transformer 22 is also connected with
The junction of six phase-shift curves 17, the 3rd power splitter 33 and the 3rd impedance transformer 23 is also connected with the 7th phase-shift curve 17, the 4th
The junction of the impedance transformer 24 of power splitter 34 and the 4th is also connected with the 8th phase-shift curve 18, the 5th power splitter 35 and the 6th impedance
The junction of converter 26 is also connected with the 9th phase-shift curve 19, and the 5th phase-shift curve 15, the 6th phase-shift curve 16, the 7th phase shift are bent
The two ends of line 17, the 8th phase-shift curve 18 and the 9th phase-shift curve are all connected with radiation fin concatenation unit.
Radiation chip arrays 1 and impedance matching network 2 are arranged at the first layer surface of 5 layers of medium substrate, 5 layers of medium substrate
Metal level is additionally provided between every two layers, therefore altogether provided with 4 layers of metal level, the bottom surface of layer 5 medium substrate is passed provided with electric feed signal
Defeated device, the electric feed signal transmitting device includes SMP-M joints 41, microstrip transmission line 43 and metallization feed through hole 44.SMP-M
Joint 41 is provided with multiple blind holes 42, prevents electromagnetic wave leakage, it is ensured that the low-loss transmission of energy, and the one end of microstrip transmission line 43 connects
SMP-M joints 41 are connect, other end connection metallization feed through hole 44, SMP-M joint 41DE metal probes are pressed in microstrip transmission line
43 midlines, and microstrip transmission line is provided with gap according to CPWG correlation theories in both sides.Metallization feed through hole 44 passes through 5 layers
Single feed point 3 is connected after medium substrate and 4 layers of metal level and completes back feed type feed connection.Wherein, diameter is opened up on 5 layers of medium substrate
The circular hole equal with the metallization feed external diameter of through hole 44, is passed through for metallization feed through hole, the position of four layers of metal level correspondence circular hole
Put and open up the circular groove that diameter is more than circular hole with circular hole concentric, the diameter ratio of circular groove and circular hole is：4：1, the present embodiment circular groove
A diameter of 1.6mm.Ensure energy smooth transfer of the electric feed signal by layer 5 medium substrate to first layer medium substrate.
S11 simulation results are shown in Fig. 4, and -10dB impedances frequency range is 23.67GHz-24.26GHz, contains 24GHz,
Tri- frequencies of 24.125GHz, 24.25GHz.Fig. 5-7 is shown at 24GHz, 24.125GHz, 24.25GHz frequencies respectively
Antenna pattern characteristic.Research shows that emulation substantially meets design requirement with test result.
Wherein, three layers of the centre of 5 layers of medium substrate is FR4 dielectric-slabs, and two layers is Rogers dielectric-slabs up and down.
The structure of trailer-mounted radar array antenna disclosed in this invention can as radar antenna transmitting terminal or receiving terminal, its
Radiate chip arrays and the radiation fin of varying number also may be selected according to aligned transfer of the present invention, and combined impedance pair net
Network realizes high-gain, low interference, the trailer-mounted radar array antenna of high radiation efficiency.Meanwhile, the present invention is not limited to certain material,
Other related low-loss dielectrics can also be filled, still, aerial radiation chip size is both needed to according to designing points disclosed in this invention
It is adjusted with rule.
It is the wherein specific implementation of the present invention above, it describes more specific and detailed, but can not therefore manage
Solve as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, not departing from
On the premise of present inventive concept, various modifications and improvements can be made, these obvious alternative forms belong to this hair
Bright protection domain.
Claims (10)
1. a kind of trailer-mounted radar array antenna, it is characterised in that：Including radiation chip arrays and the impedance being arranged on same plane
Matching network, radiation chip arrays axle centered on impedance matching network is in both sides symmetry arrangement structure.
2. trailer-mounted radar array antenna according to claim 1, it is characterised in that：The impedance matching network is by microstrip line
Cabling is constituted.
3. trailer-mounted radar array antenna according to claim 2, it is characterised in that：The impedance matching network includes work(point
Device, impedance transformer and Phaseshift controlling part, the Phaseshift controlling part include the first phase shift control acted on phase adjusted
System part and the second Phaseshift controlling part for producing 180 degree phase difference.
4. trailer-mounted radar array antenna according to claim 3, it is characterised in that：The impedance transformer is walked for rectangle
Line, the rectangular form of power splitter is arranged at the side of impedance transformer, the first Phaseshift controlling part and the second phase shift
Control section is connected to the both sides of impedance transformer in the form of bending cabling respectively.
5. trailer-mounted radar array antenna according to claim 1, it is characterised in that：The radiation chip arrays include multigroup one
The radiation fin concatenation unit of end connection impedance matching network, every group of radiation fin concatenation unit includes the multiple length phases being sequentially connected in series
Together, the radiation fin that width is successively decreased successively laterally by one end of connection impedance matching network.
6. trailer-mounted radar array antenna according to claim 1, it is characterised in that：The radiation chip arrays and impedance matching
Network settings are provided with single feed point in the one side of medium substrate, the impedance matching network, and the another side of the medium substrate is set
Put electric feed signal transmitting device and connect single feed point through medium substrate.
7. trailer-mounted radar array antenna according to claim 6, it is characterised in that：Electric feed signal transmitting device includes SMP-
M joints, the SMP-M joints connect single feed point by microstrip transmission line.
8. trailer-mounted radar array antenna according to claim 7, it is characterised in that：Single microstrip transmission line end passes through
Metallization feed through hole connection single feed point.
9. trailer-mounted radar array antenna according to claim 8, it is characterised in that：The medium substrate is sandwich construction,
Metal level is provided between every two layers of the medium substrate of the sandwich construction.
10. trailer-mounted radar array antenna according to claim 9, it is characterised in that：The medium substrate provided with diameter with
The equal circular hole of metallization feed through hole external diameter is passed through for metallization feed through hole, the position of the metal level correspondence circular hole
On open up diameter be more than circular hole circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710114480.8A CN106972244B (en) | 2017-02-28 | 2017-02-28 | Vehicle-mounted radar array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710114480.8A CN106972244B (en) | 2017-02-28 | 2017-02-28 | Vehicle-mounted radar array antenna |
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| CN106972244A true CN106972244A (en) | 2017-07-21 |
| CN106972244B CN106972244B (en) | 2020-03-27 |
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| CN107508039A (en) * | 2017-08-15 | 2017-12-22 | 武汉雷毫科技有限公司 | Patch antenna element and array |
| CN107516763A (en) * | 2017-08-15 | 2017-12-26 | 武汉雷毫科技有限公司 | Patch antenna element and array |
| CN108196255A (en) * | 2018-03-23 | 2018-06-22 | 加特兰微电子科技(上海)有限公司 | Millimeter wave radar system for vehicle |
| CN109193177A (en) * | 2018-08-02 | 2019-01-11 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted 77GHz millimetre-wave radar antenna |
| CN109193179A (en) * | 2018-09-20 | 2019-01-11 | 苏州大学 | The horizontal airspace division array antenna of narrow beam, Wide measuring range |
| CN109546300A (en) * | 2018-09-30 | 2019-03-29 | 惠州市德赛西威汽车电子股份有限公司 | 24GHz micro-strip array antenna and its component, vehicle-mounted millimeter wave radar |
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