CN110098469A - A kind of vehicle-mounted 4D radar antenna of 76.5GHz inhibiting minor lobe using parasitic element - Google Patents
A kind of vehicle-mounted 4D radar antenna of 76.5GHz inhibiting minor lobe using parasitic element Download PDFInfo
- Publication number
- CN110098469A CN110098469A CN201910299171.1A CN201910299171A CN110098469A CN 110098469 A CN110098469 A CN 110098469A CN 201910299171 A CN201910299171 A CN 201910299171A CN 110098469 A CN110098469 A CN 110098469A
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- China
- Prior art keywords
- parasitic element
- radiation patch
- vehicle
- feed structure
- minor lobe
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- 230000003071 parasitic effect Effects 0.000 title claims abstract description 35
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 12
- 230000005855 radiation Effects 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 238000003491 array Methods 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 238000003490 calendering Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- H01Q1/36—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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- 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
- 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
Abstract
The invention proposes a kind of vehicle-mounted 4D radar antennas of 76.5GHz for inhibiting minor lobe using parasitic element, there is medium substrate, radiation patch, feed structure and parasitic element structure.The medium substrate dielectric constant is 3.04, with a thickness of 0.127mm；The radiation patch is rectangular microband paste, is connected into linear array according to the face E direction, and each linear array is composed in series by two panels radiation patch, totally two linear arrays, forms 2*2 micro-strip array antenna by the feed structure；The parasitic element structure is similar to feed structure, is located above radiation patch with feed structure in mirror symmetry.The present invention has ± 20 ° of beam coverage in pitching and horizontal direction, and can reduce minor lobe by parasitic element structure and inhibit interference, and production is simple, can satisfy vehicle-mounted 4D radar imagery requirement.
Description
Technical field
The present invention relates to millimeter wave antenna technical fields, and in particular to a kind of microstrip array day for vehicle-mounted 4D imaging
Line.
Background technique
Microstrip antenna has the advantages of many can not be substituted compared with traditional antenna.It is small in size, light-weight, section is low,
Feature compact-sized, performance is stable, is widely used in radar and the communications field.Traditional trailer-mounted radar is essentially all general
Logical 3D radar, what it was detected is a plane, then adds speed, due to the limitation of pitching beam angle, detection less than compared with
High target.Common millimetre-wave radar antenna can not have both identical wider beam area in pitching and horizontal direction,
Generally horizontal beam area is wider, and pitch orientation is relatively narrow, and it is impossible to meet 4D imaging requirements.
Summary of the invention
It is a kind of in the Sidelobe array day that pitching and horizontal direction all have compared with broad beam it is an object of the invention to propose
Line, in order to meet the functions such as vehicle-mounted 4D radar imagery.
Realize technical solution of the invention are as follows: a kind of vehicle-mounted 4D thunder of 76.5GHz for inhibiting minor lobe using parasitic element
Up to antenna, there are medium substrate, radiation patch, feed structure and parasitic element structure.The dielectric constant of the medium substrate is
3.04；The radiation patch is rectangular microband paste, is connected into linear array according to the face E direction, each linear array is by two panels radiation patch
It is composed in series, totally two linear arrays, passes through the feed structure connection composition 2*2 micro-strip array antenna；The parasitic element knot
Structure is similar to feed structure, is located above radiation patch with feed structure in mirror symmetry.
Preferably, the dielectric constant of the medium substrate is 3.04, and with a thickness of 0.127mm, copper foil is calendering copper, with a thickness of
18um, dielectric constant 3.04.
Preferably, the radiation patch is rectangular microband paste, and the radiation patch is rectangular microband paste, according to E
Face direction is connected into linear array, and each linear array is composed in series by two panels radiation patch, totally two linear arrays.
Preferably, the long L1=1.07mm, W1=1.38mm, L2=1.08mm, W2=1.38mm of the radiation patch.
Preferably, the feeder line width b=0.2mm for radiation patch of connecting, length a1=1.05mm, a2=1.1mm.Finally connect
A quarter impedance transformer is connect convenient for matching with 50 Ω feeder lines, the length Zl1=0.63mm of a quarter impedance transformer is wide
Spend Zw1=0.1mm.
Preferably, the feed structure is that one-to-two power splitter is hindered after 50 Ω feeder line of You Lianggen is in parallel by a quarter
Resistance parallel operation is matched with 50 Ω feeder lines, the width W=0.3mm of 50 Ω feeder lines, a quarter impedance transformer length Zl2=
0.73mm, width Zw2=0.53mm.
Preferably, the parasitic element, structure is similar to feed structure, is located at radiation in mirror symmetry with feed structure
It above patch, and is S=0.1mm at a distance from radiation patch.
Preferably, outside the parasitic element width W3=0.4mm, remaining every size is identical as feed structure.
What the invention adopts the above technical scheme has the beneficial effect that parasitic element can effectively reduce feeding network to day
The influence of line directional diagram improves directional diagram symmetry and reduces minor level.
Radiating element of the present invention has good symmetry using rectangular patch, and makes simple；The present invention is by adding
Parasitic element is added to effectively reduce minor lobe；The present invention has ± 20 ° of beam coverage in pitching and horizontal direction, can
Meet the requirement of vehicle-mounted 4D radar imagery.
Detailed description of the invention
Fig. 1 is overall structure figure of the present invention.
Fig. 2 is linear array schematic diagram of the invention.
Fig. 3 is feed structure schematic diagram of the invention.
Fig. 4 is antenna plane schematic diagram of the invention.
Fig. 5 is directional diagram of the present invention, and dotted line is the two-dimentional normalized radiation pattern for not loading parasitic element in figure, and solid line is to add
Carry the two-dimentional normalized radiation pattern of parasitic element.
Fig. 6 is return loss plot of the present invention.
Below in conjunction with attached drawing and specific embodiment, the present invention is described further.
Specific embodiment
Further detailed description is done to the present invention with reference to the accompanying drawing.
As shown in Figure 1, a kind of vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element of the present invention, there is Jie
Matter substrate 1, radiation patch 2, feed structure 3 and parasitic element structure 4.The dielectric constant of the medium substrate 1 is 3.04；Institute
Stating radiation patch 2 is rectangular microband paste, is connected into linear array according to the face E direction, each linear array is by two panels radiation patch series connection group
At totally two linear arrays, pass through the connection composition 2*2 micro-strip array antenna of feed structure 3；The parasitic element structure 4 with
Feed structure 3 is similar, is located at 2 top of radiation patch in mirror symmetry with feed structure 3.
In further embodiment, the dielectric constant of the medium substrate is 3.04, and with a thickness of 0.127mm, copper foil is pressure
Prolong copper, with a thickness of 18um, dielectric constant 3.04.
The radiation patch 2 is rectangular microband paste, is connected into linear array according to the face E direction, each linear array is by two panels spoke
It penetrates patch 2 to be composed in series, totally two linear arrays.
As shown in Figure 2,3, the long L1=1.07mm, W1=1.38mm, L2=1.08mm, W2=of the radiation patch 2
1.38mm；The feeder line width b=0.2mm, length a1=1.05mm, a2=1.1mm for radiation patch 2 of connecting.Finally connect four points
One of impedance transformer convenient for being matched with 50 Ω feeder lines, the length Zl1=0.63mm of a quarter impedance transformer, width Zw1
=0.1mm；The feed structure 3 is that one-to-two power splitter is converted after 50 Ω feeder line of You Lianggen is in parallel by a quarter impedance
Device is matched with 50 Ω feeder lines, the width W=0.3mm of 50 Ω feeder lines, a quarter impedance transformer length Zl2=0.73mm, wide
Spend Zw2=0.53mm.
As shown in figure 4, the parasitic element structure 4 is similar to feed structure 3, it is in mirror symmetry position with feed structure 3
It above radiation patch 2, and is S=0.1mm at a distance from radiation patch.
In further embodiment, outside the width W3=0.4mm of the parasitic element structure 4, remaining every size with
Feed structure is identical.
In the present embodiment, radiating element is rectangular patch, has good symmetry, the processing is simple, utilizes parasitic element
Reduce minor lobe；As seen from Figure 5, parasitic element structure can inhibit minor level in the case where not influencing main beam, add
The antenna side lobe level for carrying parasitic element is -24.2dB, and gain 12dB, E, H surface wave beam width has all reached ± 20 °, is met
Vehicle-mounted 4D radar imagery index；As seen from Figure 6, in 76GHz~77GHz, S11Respectively less than -10dB.
Claims (8)
1. it is a kind of using parasitic element inhibit minor lobe the vehicle-mounted 4D radar antenna of 76.5GHz, which is characterized in that have medium substrate,
Radiation patch, feed structure and parasitic element structure；The dielectric constant of the medium substrate is 3.04；The radiation patch is
Rectangular microband paste is connected into linear array according to the face E direction, and each linear array is composed in series by two panels radiation patch, totally two linear arrays,
Pass through the feed structure connection composition 2*2 micro-strip array antenna；The parasitic element structure is similar to feed structure, with feedback
Electric structure is located above radiation patch in mirror symmetry.
2. a kind of vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element according to claim 1, special
Sign is that the dielectric constant of the medium substrate is 3.04, and with a thickness of 0.127mm, copper foil is that calendering copper is situated between with a thickness of 18um
Electric constant is 3.04.
3. a kind of vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element according to claim 1, special
Sign is that the radiation patch is rectangular microband paste, is connected into linear array according to the face E direction, each linear array is radiated by two panels
Patch is composed in series, totally two linear arrays.
4. a kind of according to claim 1, vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element described in 3,
It is characterized in that, the long L1=1.07mm, W1=1.38mm, L2=1.08mm, W2=1.38mm of radiation patch.
5. a kind of according to claim 1, vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element described in 3,
It is characterized in that, the feeder line width b=0.2mm for radiation patch of connecting, length a1=1.05mm, a2=1.1mm.Finally connect four points
One of impedance transformer convenient for being matched with 50 Ω feeder lines, the length Zl1=0.63mm of a quarter impedance transformer, width Zw1
=0.1mm.
6. a kind of vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element according to claim 1, special
Sign is that the feed structure is that one-to-two power splitter passes through a quarter impedance transformer after 50 Ω feeder line of You Lianggen is in parallel
It is matched with 50 Ω feeder lines, the width W=0.3mm of 50 Ω feeder lines, a quarter impedance transformer length Zl2=0.73mm, width
Zw2=0.53mm.
7. a kind of vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element according to claim 1, special
Sign is that the parasitic element structure is similar to feed structure, is located above radiation patch with feed structure in mirror symmetry,
It and is S=0.1mm at a distance from radiation patch.
8. a kind of according to claim 1, vehicle-mounted 4D radar antenna of 76.5GHz for inhibiting minor lobe using parasitic element described in 7,
It is characterized in that, outside the parasitic element width W3=0.4mm, remaining every size is identical as feed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299171.1A CN110098469B (en) | 2019-04-15 | 2019-04-15 | Vehicle-mounted 4D radar antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299171.1A CN110098469B (en) | 2019-04-15 | 2019-04-15 | Vehicle-mounted 4D radar antenna |
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| Publication Number | Publication Date |
|---|---|
| CN110098469A true CN110098469A (en) | 2019-08-06 |
| CN110098469B CN110098469B (en) | 2024-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910299171.1A Active CN110098469B (en) | 2019-04-15 | 2019-04-15 | Vehicle-mounted 4D radar antenna |
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| Country | Link |
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| CN (1) | CN110098469B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI711220B (en) * | 2019-10-01 | 2020-11-21 | 輝創電子股份有限公司 | Radar antenna device |
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| CN1336703A (en) * | 2000-06-29 | 2002-02-20 | 汤姆森许可贸易公司 | Array-fed unit made by micro-band technique for transmitting or receiving electromagnetic wave |
| US20050054317A1 (en) * | 2003-09-09 | 2005-03-10 | Haeng-Sook Ro | Microstrip patch antenna having high gain and wideband |
| CN103548202A (en) * | 2011-05-23 | 2014-01-29 | Ace技术株式会社 | Radar array antenna |
| CN105490036A (en) * | 2016-01-07 | 2016-04-13 | 华南理工大学 | Series-feed and shunt-feed combination filtering microstrip array antenna |
| CN106816716A (en) * | 2016-12-12 | 2017-06-09 | 上海交通大学 | Bimodulus vortex wave beam double-circle polarization four-element array antenna simple for structure |
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-
2019
- 2019-04-15 CN CN201910299171.1A patent/CN110098469B/en active Active
Patent Citations (7)
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| CN1336703A (en) * | 2000-06-29 | 2002-02-20 | 汤姆森许可贸易公司 | Array-fed unit made by micro-band technique for transmitting or receiving electromagnetic wave |
| US20050054317A1 (en) * | 2003-09-09 | 2005-03-10 | Haeng-Sook Ro | Microstrip patch antenna having high gain and wideband |
| CN103548202A (en) * | 2011-05-23 | 2014-01-29 | Ace技术株式会社 | Radar array antenna |
| CN105490036A (en) * | 2016-01-07 | 2016-04-13 | 华南理工大学 | Series-feed and shunt-feed combination filtering microstrip array antenna |
| CN106816716A (en) * | 2016-12-12 | 2017-06-09 | 上海交通大学 | Bimodulus vortex wave beam double-circle polarization four-element array antenna simple for structure |
| US20190067834A1 (en) * | 2017-08-30 | 2019-02-28 | Korea Advanced Institute Of Science And Technology | Series-Fed E-shaped Patch Antenna Array with Co-polarized Parasitic Patches |
| CN209747715U (en) * | 2019-04-15 | 2019-12-06 | 上海瀚唯科技有限公司 | 76.5GHz vehicle-mounted 4D radar antenna for restraining side lobe by using parasitic unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI711220B (en) * | 2019-10-01 | 2020-11-21 | 輝創電子股份有限公司 | Radar antenna device |
| CN112599971A (en) * | 2019-10-01 | 2021-04-02 | 辉创电子股份有限公司 | Radar antenna device |
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| CN110098469B (en) | 2024-03-01 |
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Effective date of registration: 20200107 Address after: 201206 second floor, t12b-ii, No. 615, ningqiao Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Applicant after: Shanghai geometry partner intelligent driving Co.,Ltd. Address before: 200438, room 4, building 4, building 135, Wei Lu, Yangpu District, Shanghai, Applicant before: SHANGHAI HANNWAY TECHNOLOGY Corp.,Ltd. |
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