CN110098469B - Vehicle-mounted 4D radar antenna - Google Patents
Vehicle-mounted 4D radar antenna Download PDFInfo
- Publication number
- CN110098469B CN110098469B CN201910299171.1A CN201910299171A CN110098469B CN 110098469 B CN110098469 B CN 110098469B CN 201910299171 A CN201910299171 A CN 201910299171A CN 110098469 B CN110098469 B CN 110098469B
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- China
- Prior art keywords
- vehicle
- feed structure
- patches
- radiating
- radar antenna
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- 230000003071 parasitic effect Effects 0.000 claims abstract description 27
- 230000005855 radiation Effects 0.000 claims abstract description 17
- 238000003491 array Methods 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 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
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 230000001629 suppression Effects 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—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
Landscapes
- 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 invention provides a vehicle-mounted 4D radar antenna which comprises a dielectric substrate, a radiation patch, a feed structure and a parasitic unit structure. The dielectric substrate has a dielectric constant of 3.04 and a thickness of 0.127mm; the radiating patches are rectangular microstrip patches and are connected in series according to the E-plane direction to form linear arrays, each linear array is formed by connecting two radiating patches in series, and the two linear arrays are combined into a2 x 2 microstrip array antenna through the feed structure; the parasitic element structure is similar to the feed structure and is located above the radiating patch in mirror symmetry with the feed structure. The invention has beam coverage of +/-20 degrees in the pitching direction and the horizontal direction, can reduce the side lobe inhibition interference through a parasitic unit structure, is simple to manufacture, and can meet the imaging requirement of the vehicle-mounted 4D radar.
Description
Technical Field
The invention relates to the technical field of millimeter wave antennas, in particular to a microstrip array antenna for vehicle-mounted 4D imaging.
Background
Microstrip antennas have many irreplaceable advantages over conventional antennas. The device has the characteristics of small volume, light weight, low section, compact structure and stable performance, and is widely applied to the fields of radar and communication. The conventional vehicle radar is basically a common 3D radar, which detects a plane, and then adds a speed, so that a higher target cannot be detected due to the limitation of the pitching beam width. The common millimeter wave radar antenna cannot have the same wide beam range in the pitching direction and the horizontal direction, and is generally wide in the horizontal beam range and narrow in the pitching direction, so that the 4D imaging requirement cannot be met.
Disclosure of Invention
The invention aims to provide a low-sidelobe array antenna with wider beams in the pitching direction and the horizontal direction, and aims to meet functions of vehicle-mounted 4D radar imaging and the like.
The technical scheme for realizing the invention is as follows: a vehicle-mounted 4D radar antenna comprises a dielectric substrate, a radiation patch, a feed structure and a parasitic element structure. The dielectric constant of the dielectric substrate is 3.04; the radiating patches are rectangular microstrip patches and are connected in series according to the E-plane direction to form linear arrays, each linear array is formed by connecting two radiating patches in series, and the two linear arrays are connected through the feed structure to form a2 x 2 microstrip array antenna; the parasitic element structure is similar to the feed structure and is located above the radiating patch in mirror symmetry with the feed structure.
Preferably, the dielectric substrate has a dielectric constant of 3.04, a thickness of 0.127mm, the copper foil is rolled copper, a thickness of 18um, and a dielectric constant of 3.04.
Preferably, the radiation patch is a rectangular microstrip patch, and the radiation patch is connected in series according to the E-plane direction to form linear arrays, and each linear array is formed by connecting two radiation patches in series, and the two linear arrays are altogether.
Preferably, the length l1=1.07 mm, w1=1.38 mm, l2=1.08 mm, w2=1.38 mm of the radiating patch.
Preferably, the feed line width b=0.2 mm, length a1=1.05 mm, a2=1.1 mm of the series radiating patch. Finally, the quarter-impedance transformer is connected so as to be matched with the 50Ω feeder, and the length Zl1=0.63 mm and the width Zw1=0.1 mm of the quarter-impedance transformer.
Preferably, the feeding structure is a one-to-two power divider, and after two 50 Ω feeders are connected in parallel, the two power dividers are matched with the 50 Ω feeder through a quarter impedance transformer, the width W of the 50 Ω feeder=0.3 mm, the length zl2=0.73 mm, and the width zw2=0.53 mm.
Preferably, the parasitic element has a structure similar to the feed structure, is located above the radiation patch in a mirror symmetry manner with respect to the feed structure, and has a distance s=0.1 mm from the radiation patch.
Preferably, the parasitic element width w3=0.4 mm, and the dimensions of the other elements are the same as those of the feed structure.
The beneficial effects of the invention adopting the technical scheme are as follows: the parasitic unit can effectively reduce the influence of the feed network on the antenna pattern, improve the pattern symmetry and reduce the side lobe level.
The radiating unit of the invention adopts a rectangular patch, has good symmetry and is simple to manufacture; the parasitic unit is added, so that the side lobe is effectively reduced; the invention has beam coverage of +/-20 degrees in the pitching direction and the horizontal direction, and can meet the requirement of vehicle-mounted 4D radar imaging.
Drawings
Fig. 1 is an overall construction diagram of the present invention.
Fig. 2 is a schematic diagram of a linear array according to the present invention.
Fig. 3 is a schematic diagram of a feed structure of the present invention.
Fig. 4 is a schematic plan view of an antenna according to the present invention.
FIG. 5 is a diagram of the present invention, wherein the dashed line is a two-dimensional normalized diagram of an unloaded parasitic element and the solid line is a two-dimensional normalized diagram of a loaded parasitic element.
Fig. 6 is a return loss plot of the present invention.
The invention will be further described with reference to the drawings and detailed description.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the 76.5GHz vehicle-mounted 4D radar antenna for suppressing side lobes by using parasitic elements of the present invention includes a dielectric substrate 1, a radiation patch 2, a feed structure 3, and a parasitic element structure 4. The dielectric substrate 1 has a dielectric constant of 3.04; the radiating patches 2 are rectangular microstrip patches, and are connected in series according to the E-plane direction to form linear arrays, each linear array is formed by connecting two radiating patches in series, and the two linear arrays are connected through the feed structure 3 to form a2 x 2 microstrip array antenna; the parasitic element structure 4 is similar to the feed structure 3 and is located above the radiating patches in mirror symmetry with the feed structure in the direction of the series connection of the two radiating patches.
In a further embodiment, the dielectric substrate has a dielectric constant of 3.04, a thickness of 0.127mm, the copper foil is rolled copper, a thickness of 18um, and a dielectric constant of 3.04.
The radiation patches 2 are rectangular microstrip patches, and are connected in series according to the E-plane direction to form linear arrays, and each linear array is formed by connecting two radiation patches 2 in series, and the total number of the two linear arrays is two.
As shown in fig. 2 and 3, the two radiation patches of each linear array have the dimensions l1=1.07 mm, w1=1.38 mm, l2=1.08 mm, w2=1.38 mm; the width b=0.2 mm of the corresponding two sections of feeder lines of the series radiation patch of each linear array is a1=1.05 mm, and the length a2=1.1 mm. Finally, the quarter-impedance transformer is connected so as to be matched with a 50Ω feeder, the length Zl1=0.63 mm and the width Zw1=0.1 mm of the quarter-impedance transformer; the feed structure 3 is a one-to-two power divider, two 50 Ω feeder lines are connected in parallel, and then are matched with the 50 Ω feeder lines through a quarter impedance transformer, the width w=0.3 mm of the 50 Ω feeder lines, the length zl2=0.73 mm of the quarter impedance transformer, and the width zw2=0.53 mm.
As shown in fig. 4, the parasitic element structure 4 is similar to the feed structure 3, is located above the radiation patch 2 in mirror symmetry with the feed structure 3, and has a distance s=0.1 mm from the radiation patch.
In a further embodiment, the parasitic element has the same dimensions as the feed structure except for a width w3=0.4 mm near the radiating patch portion.
In the embodiment, the radiating unit is a rectangular patch, so that the radiating unit has good symmetry, is simple to process, and reduces side lobes by using the parasitic unit; as can be seen from FIG. 5, the parasitic element structure can inhibit the side lobe level without affecting the main beam, the antenna side lobe level loading the parasitic element is-24.2 dB, the gain is 12dB, the E and H plane beam widths reach + -20 DEG, and the imaging of the vehicle-mounted 4D radar is satisfiedAn index; as can be seen from FIG. 6, S is present at 76 GHz-77 GHz 11 Are all less than-10 dB.
Claims (7)
1. A76.5 GHz vehicle-mounted 4D radar antenna for inhibiting side lobes by using a parasitic element is characterized by comprising a dielectric substrate, a radiation patch, a feed structure and a parasitic element structure; the dielectric constant of the dielectric substrate is 3.04; the radiating patches are rectangular microstrip patches and are connected in series according to the E-plane direction to form linear arrays, each linear array is formed by connecting two radiating patches in series, and the two linear arrays are connected through the feed structure to form a2 x 2 microstrip array antenna; the parasitic element structure is similar to the feed structure and is located above the radiation patches in a mirror symmetry manner in the direction of the series connection of the two radiation patches with the feed structure.
2. The 76.5GHz vehicle-mounted 4D radar antenna of claim 1, wherein the dielectric substrate has a dielectric constant of 3.04, a thickness of 0.127mm, the copper foil is rolled copper, a thickness of 18um, and a dielectric constant of 3.04.
3. A 76.5GHz vehicle-mounted 4D radar antenna with parasitic element suppression of side lobes according to claim 1, wherein the two radiating patches of each linear array are each l1=1.07 mm, w1=1.38 mm, l2=1.08 mm, w2=1.38 mm in size.
4. A 76.5GHz vehicle-mounted 4D radar antenna using parasitic elements to suppress side lobes according to claim 1, wherein the width b=0.2 mm of two sections of feeder lines corresponding to the series radiating patches of each linear array has a length a1=1.05 mm and a2=1.1 mm, respectively; finally, the quarter-impedance transformer is connected so as to be matched with the 50Ω feeder, and the length Z11=0.63 mm and the width Zw1=0.1 mm of the quarter-impedance transformer.
5. A 76.5GHz vehicle-mounted 4D radar antenna using parasitic elements to suppress side lobes according to claim 1, wherein the feed structure is a one-to-two power divider, and is matched with a 50Ω feed line by a quarter impedance transformer after two 50Ω feed lines are connected in parallel, the width w=0.3 mm of the 50Ω feed line, the length z12=0.73 mm of the quarter impedance transformer, and the width zw2=0.53 mm.
6. A 76.5GHz vehicle-mounted 4D radar antenna according to claim 1, wherein the parasitic element is configured to be similar to the feed structure, is positioned above the radiating patch in mirror symmetry with the feed structure, and is spaced from the radiating patch by a distance s=0.1 mm.
7. A 76.5GHz vehicle-mounted 4D radar antenna according to any of claims 1 or 6, wherein the parasitic element has the same dimensions as the feed structure except for a width w3=0.4 mm adjacent the radiating patch portion.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110098469A CN110098469A (en) | 2019-08-06 |
| CN110098469B true CN110098469B (en) | 2024-03-01 |
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| 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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| CN (1) | CN110098469B (en) |
Families Citing this family (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 |
| CN110828978A (en) * | 2019-10-30 | 2020-02-21 | 南京市德赛西威汽车电子有限公司 | 77GHz vehicle radar low-sidelobe microstrip array antenna with shielding case |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100542829B1 (en) * | 2003-09-09 | 2006-01-20 | 한국전자통신연구원 | High Gain and Wideband Microstrip Patch Antenna for Transmitting/Receiving and Array Antenna Arraying it |
| KR101942343B1 (en) * | 2017-08-30 | 2019-01-25 | 한국과학기술원 | Series-Fed E-shaped Patch Antenna Array with Co-polarized Parasitic Patches |
-
2019
- 2019-04-15 CN CN201910299171.1A patent/CN110098469B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 微带线馈电的宽带单层贴片天线;卢晓鹏;汪伟;高初;;雷达科学与技术(第04期);全文 * |
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| CN110098469A (en) | 2019-08-06 |
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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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